/* ============================================
   PORTFOLIO - PREMIUM DESIGN SYSTEM
   ============================================ */

/* --- Design Tokens --- */
:root {
    /* Colors */
    --bg-primary: #020617;
    --bg-secondary: #0f172a;
    --bg-tertiary: #1e293b;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #a0afbc; /* raised from #64748b (3.1:1) to meet WCAG 1.4.3 AA ≥4.5:1 */

    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --accent-dark: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.5);
    --accent-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);

    --success: #10b981;
    --success-light: #4ade80;
    --success-dark: #059669;
    --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);

    --warning: #f59e0b;
    --warning-dark: #d97706;
    --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);

    --error: #ef4444;

    --purple: #8b5cf6;
    --purple-light: #a78bfa;
    --purple-dark: #7c3aed;
    --purple-darker: #6d28d9;
    --purple-gradient: linear-gradient(135deg, #8b5cf6, #7c3aed);

    --cyan: #06b6d4;
    --cyan-dark: #0891b2;
    --cyan-darker: #0e7490;
    --cyan-gradient: linear-gradient(135deg, #06b6d4, #0891b2);

    --orange: #f97316;
    --orange-dark: #ea580c;
    --orange-darker: #c2410c;
    --orange-gradient: linear-gradient(135deg, #f97316, #ea580c);

    /* Iteration 2: Additional Gradients */
    --warm-gradient: linear-gradient(135deg, #f97316, #ef4444);
    --cool-gradient: linear-gradient(135deg, #06b6d4, #3b82f6);
    --success-gradient-radial: radial-gradient(circle at top left, #10b981, #059669);
    --gradient-border-accent: linear-gradient(135deg, rgba(59, 130, 246, 0.5), rgba(139, 92, 246, 0.5));

    --white: #ffffff;

    --linkedin-blue: #0A66C2;
    --linkedin-blue-dark: #004182;

    /* Terminal Colors */
    --terminal-bg: #0a0a0a;
    --terminal-bg-light: #1a1a1a;
    --terminal-border: #2a2a2a;
    --terminal-green: #22c55e;
    --terminal-green-light: #86efac;
    --terminal-green-bright: #27c93f;
    --terminal-red: #ff5f56;
    --terminal-yellow: #ffbd2e;
    --terminal-info: #666;
    --terminal-divider: #333;

    /* Glass Effect */
    --glass-bg: rgba(30, 41, 59, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(20px);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);

    /* Borders */
    --border: 1px solid var(--glass-border);
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Animation */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;

    /* Heading Gradients */
    --heading-gradient: linear-gradient(135deg, var(--text-primary), var(--accent-light));
    --heading-gradient-accent: linear-gradient(135deg, var(--accent-light), var(--purple-light));

    /* Focus States */
    --focus-ring: 0 0 0 4px rgba(59, 130, 246, 0.3);
    --focus-ring-error: 0 0 0 4px rgba(239, 68, 68, 0.3);
    --focus-ring-success: 0 0 0 4px rgba(16, 185, 129, 0.3);
    --focus-outline: 3px solid var(--accent);
    --focus-outline-offset: 2px;

    /* Loading States */
    --shimmer-gradient: linear-gradient(90deg,
        transparent,
        rgba(255, 255, 255, 0.05),
        transparent
    );

    /* Z-index Layers */
    --z-toast: 3000;
    --z-modal: 2000;
    --z-dropdown: 1000;
    --z-sticky: 500;
    --z-base: 1;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-main);
    font-size: 1rem;
    line-height: 1.7;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Subtle background pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Subtle noise texture for depth (Iteration 2) */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256"><filter id="noise"><feTurbulence baseFrequency="0.65" numOctaves="3" /></filter><rect width="256" height="256" filter="url(%23noise)" opacity="0.03"/></svg>');
    pointer-events: none;
    opacity: 0.3;
    mix-blend-mode: overlay;
    z-index: -1;
}

a {
    text-decoration: none;
    color: var(--accent-light);
    transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
    color: var(--text-primary);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

::selection {
    background: var(--accent);
    color: var(--text-primary);
}

/* --- Utilities --- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-inline: var(--space-lg);
}

.text-accent {
    color: var(--accent);
}

.text-success {
    color: var(--success);
}

.text-warning {
    color: var(--warning);
}

.text-muted {
    color: var(--text-muted);
}

.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

/* --- Loading States & Skeleton Screens --- */

/* Skeleton Placeholder */
.skeleton {
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    pointer-events: none;
}

.skeleton::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--shimmer-gradient);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

/* Skeleton Variants */
.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
    border-radius: var(--radius-sm);
}

.skeleton-text:last-child {
    width: 80%;
}

.skeleton-heading {
    height: 2em;
    width: 60%;
    margin-bottom: var(--space-md);
}

.skeleton-card {
    height: 200px;
    border-radius: var(--radius-xl);
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.skeleton-button {
    height: 48px;
    width: 120px;
    border-radius: var(--radius-lg);
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

/* Loading State Container */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    padding: var(--space-3xl);
    text-align: center;
}

.loading-state .spinner {
    margin-bottom: var(--space-md);
}

.loading-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Progressive Image Loading */
.img-loading {
    filter: blur(10px);
    transition: filter var(--duration-slow) var(--ease-out);
}

.img-loaded {
    filter: blur(0);
}

/* Screen reader only - visually hidden but accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip to Content Link (Accessibility) */
.skip-to-content {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--accent);
    color: white;
    padding: var(--space-md) var(--space-lg);
    text-decoration: none;
    font-weight: 600;
    z-index: var(--z-toast);
    border-radius: 0 0 var(--radius-md) 0;
    transition: top var(--duration-fast) var(--ease-out);
}

.skip-to-content:focus {
    top: 0;
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
}

/* Enhanced Focus Indicators (WCAG 2.1 AAA) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    box-shadow: var(--focus-ring);
}

/* Remove default focus for non-keyboard users */
a:focus:not(:focus-visible),
button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
select:focus:not(:focus-visible),
textarea:focus:not(:focus-visible),
[tabindex]:focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
}

.mt-2 {
    margin-top: var(--space-sm);
}

.mt-4 {
    margin-top: var(--space-md);
}

.mt-6 {
    margin-top: var(--space-lg);
}

.mt-8 {
    margin-top: var(--space-xl);
}

.mb-4 {
    margin-bottom: var(--space-md);
}

.mb-6 {
    margin-bottom: var(--space-lg);
}

/* --- Typography Hierarchy --- */

/* Section Title (H2) */
.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
    line-height: 1.1;
}

/* Gradient Heading Variant */
.section-title.gradient-text,
.heading-gradient {
    background: var(--heading-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Accent Gradient Variant */
.heading-gradient-accent {
    background: var(--heading-gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* H3 Heading */
h3,
.h3 {
    font-size: clamp(1.375rem, 3vw, 1.875rem);
    font-weight: 700;
    letter-spacing: -0.015em;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

/* H4 Heading */
h4,
.h4 {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.3;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

/* H5 Heading */
h5,
.h5 {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 600;
    letter-spacing: 0;
    line-height: 1.4;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

/* Optical Margin Adjustment for Large Headings */
.hero-title,
.section-title {
    margin-left: -0.04em; /* Optical alignment for bold text */
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.875rem 2rem;
    min-height: 48px;
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

/* Ripple Effect (CSS-only) */
.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
    opacity: 0;
    transition: opacity var(--duration-fast);
}

.btn:hover::before {
    opacity: 1;
}

/* Ripple animation on click */
.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::after {
    width: 300px;
    height: 300px;
    transition: width 0s, height 0s;
}

/* Enhanced Focus States (WCAG 2.1 AAA) */
.btn:focus {
    outline: none;
}

.btn:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    box-shadow: var(--focus-ring);
}

/* Button Variants */
.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.btn-gradient {
    background: var(--accent-gradient);
    color: var(--text-primary);
    box-shadow: var(--shadow-md), 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn-gradient:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.4);
}

.btn-gradient:active {
    transform: translateY(0) scale(0.98);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(59, 130, 246, 0.1);
}

.btn-outline:active {
    transform: scale(0.98);
}

/* Button States */
.btn.full-width {
    width: 100%;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Loading State */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: btnSpinner 0.6s linear infinite;
    opacity: 1;
    background: none;
}

@keyframes btnSpinner {
    to {
        transform: rotate(360deg);
    }
}

/* --- Cards --- */
.glass-card {
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    /* Performance optimization - CSS containment */
    contain: layout style paint;
}

/* Enhanced Hover State with Lift & Glow */
.glass-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow:
        var(--shadow-md),
        0 0 30px rgba(59, 130, 246, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    /* Performance hint for smooth animations */
    will-change: transform, box-shadow;
}

.glass-card:not(:hover) {
    will-change: auto;
}

/* Gradient Border Glow Effect (Optional Enhancement) */
.glass-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 1px;
    background: linear-gradient(135deg,
        rgba(59, 130, 246, 0.3),
        rgba(139, 92, 246, 0.2),
        transparent
    );
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
    pointer-events: none;
}

.glass-card:hover::before {
    opacity: 1;
}

/* Focus State for Interactive Cards */
.glass-card:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
    box-shadow: var(--focus-ring);
}

/* Card Content */
.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    transition: color var(--duration-fast) var(--ease-out);
}

.glass-card:hover .card-title {
    color: var(--accent-light);
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* --- Header --- */
header {
    position: relative;
}

/* --- Hero Section --- */
.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    padding: var(--space-3xl) 0;
    align-items: center;
    min-height: 85vh;
}

@media (min-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1.2fr 1fr;
        padding: var(--space-3xl) 0 6rem;
    }
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-light);
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-xl);
    border: 1px solid rgba(59, 130, 246, 0.25);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    position: relative;
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: badgePulse 2s ease-in-out infinite;
    box-shadow: 0 0 8px var(--accent-glow);
}

@keyframes badgePulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

.hero-title {
    font-size: clamp(2.75rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
}

.hero-desc {
    font-size: 1.1875rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin-bottom: var(--space-md);
    line-height: 1.75;
}

.hero-tagline {
    font-size: 1rem;
    color: var(--accent-light);
    margin-bottom: var(--space-xl);
    letter-spacing: 0.04em;
}

.hero-tagline strong {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.visual-glow {
    position: absolute;
    width: 120%;
    height: 120%;
    background: var(--accent-gradient);
    filter: blur(100px);
    opacity: 0.2;
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.15;
        transform: scale(1);
    }

    50% {
        opacity: 0.25;
        transform: scale(1.05);
    }
}

.visual-card {
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: var(--border);
    width: 100%;
    max-width: 380px;
    aspect-ratio: 4/5;
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.headshot-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--ease-out);
}

.visual-card:hover .headshot-img:not(.transitioning) {
    transform: scale(1.05);
}

/* --- Profile Video Transition --- */
.visual-card {
    cursor: pointer;
}

.headshot-img {
    transition: transform var(--duration-slow) var(--ease-out),
        opacity 0.8s var(--ease-out),
        filter 0.8s var(--ease-out);
}

.headshot-img.transitioning {
    opacity: 0;
    transform: scale(1.1);
    filter: blur(10px);
}

/* Countdown Ring */
.countdown-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.countdown-ring.visible {
    opacity: 1;
    pointer-events: auto;
}

.countdown-ring.pulse {
    animation: ring-pulse 0.3s var(--ease-spring);
}

@keyframes ring-pulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
    }

    50% {
        transform: translate(-50%, -50%) scale(1.15);
    }

    100% {
        transform: translate(-50%, -50%) scale(1);
    }
}

.countdown-ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.countdown-ring .ring-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.15);
    stroke-width: 3;
}

.countdown-ring .ring-progress {
    fill: none;
    stroke: var(--accent);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 0.1s linear;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.countdown-ring .play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px var(--accent-glow);
    transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease;
}

.countdown-ring .play-icon i {
    width: 16px;
    height: 16px;
    color: white;
    margin-left: 2px;
}

.countdown-ring:hover .play-icon {
    transform: translate(-50%, -50%) scale(1.1);
    box-shadow: 0 6px 30px var(--accent-glow);
}

/* Video Container */
.video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.8s var(--ease-out);
    border-radius: inherit;
    overflow: hidden;
    background: var(--bg-primary);
}

.video-container.active {
    opacity: 1;
    pointer-events: auto;
}

.video-container video,
.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 106%;
    object-fit: cover;
    object-position: center top;
    border: none;
}

.video-close-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.7);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s var(--ease-out);
    z-index: 5;
}

.video-container.active .video-close-btn {
    opacity: 1;
    transform: scale(1);
    transition-delay: 0.5s;
}

.video-close-btn:hover {
    background: rgba(239, 68, 68, 0.8);
    border-color: rgba(239, 68, 68, 0.5);
    transform: scale(1.1);
}

.video-close-btn i {
    width: 18px;
    height: 18px;
    color: white;
}

/* Shimmer effect during transition */
.visual-card.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.1),
            transparent);
    animation: shimmer 1.5s infinite;
    z-index: 5;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

/* Tooltip hint */
.visual-card::before {
    content: 'Hold to play video';
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(0, 0, 0, 0.85);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s var(--ease-out);
    z-index: 15;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.visual-card:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.visual-card.video-active::before {
    opacity: 0 !important;
}

/* --- AI Labs Header --- */
.labs-hero-container {
    max-width: 900px;
}

.labs-display-title {
    font-size: clamp(3.5rem, 7vw, 6rem);
    font-weight: 800;
    line-height: 0.95;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.labs-hero-desc {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--space-xl);
    max-width: 650px;
    font-weight: 300;
}

.labs-kicker {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--text-muted);
    font-weight: 800;
    margin-bottom: var(--space-3xl);
}

.block {
    display: block;
}

.text-white {
    color: var(--white);
}

/* --- Stats Section --- */
.stats-section {
    background: var(--bg-secondary);
    border-top: var(--border);
    border-bottom: var(--border);
    padding: var(--space-3xl) 0;
    position: relative;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-lg);
    }
}

.stat-card {
    background: var(--bg-primary);
    border: var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration-normal) var(--ease-out);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(255, 255, 255, 0.12);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.stat-icon-bg {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    display: flex;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* --- Tabs Navigation --- */
.main-content {
    padding: var(--space-3xl) 0;
    min-height: 60vh;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-3xl);
    background: var(--bg-secondary);
    padding: var(--space-sm);
    border-radius: var(--radius-xl);
    border: var(--border);
    width: fit-content;
    margin-inline: auto;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-btn {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: all var(--duration-fast) var(--ease-out);
    white-space: nowrap;
    min-height: 44px;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.tab-content {
    display: none;
    animation: tabFadeIn 0.4s var(--ease-out);
}

.tab-content.active {
    display: block;
}

@keyframes tabFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- AI Labs Tab --- */
.labs-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 1024px) {
    .labs-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.labs-col-left>*:not(:last-child) {
    margin-bottom: var(--space-xl);
}

/* ROI Calculator */
.roi-card {
    background: var(--bg-secondary);
}

.roi-inputs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

@media (max-width: 640px) {
    .roi-inputs {
        grid-template-columns: 1fr;
    }
}

.input-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.input-group input,
.input-group select {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--glass-border);
    padding: 0.75rem var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: all var(--duration-fast) var(--ease-out);
}

.input-group input:focus,
.input-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.input-group input:focus:not(:focus-visible),
.input-group select:focus:not(:focus-visible) {
    outline: none;
}

.input-group input:focus-visible,
.input-group select:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.roi-result {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: rgba(59, 130, 246, 0.08);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* Agent Cards */
.agent-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.agent-preview {
    background: var(--bg-primary);
    border: var(--border);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    display: flex;
    gap: var(--space-sm);
    align-items: flex-start;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
}

.agent-preview:hover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
}

.agent-name {
    font-weight: 700;
    font-size: 0.875rem;
}

.agent-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Feature Panel */
.bg-dark-feature {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
    border: var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.bg-icon {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 200px;
    height: 200px;
    color: rgba(255, 255, 255, 0.02);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.feature-desc {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.8;
}

.feature-list li {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.list-bullet {
    background: var(--accent);
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.list-bullet svg {
    width: 14px;
    height: 14px;
}

/* Blueprint Output */
.bp-output {
    margin-top: var(--space-lg);
    background: var(--bg-primary);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: var(--border);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
    overflow-x: auto;
}

.bp-output table {
    width: 100%;
    border-collapse: collapse;
}

.bp-output th,
.bp-output td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: var(--border);
}

.bp-output th {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.75rem;
}

/* FAQ Accordion */
.faq-item {
    border-bottom: var(--border);
}

.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    color: var(--text-primary);
    font-weight: 600;
    padding: var(--space-md) 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color var(--duration-fast);
}

.faq-question:hover {
    color: var(--accent);
}

.faq-answer {
    padding: 0 0 var(--space-lg) 0;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* --- History Tab V2 (Alternating Timeline) --- */
.timeline-v2 {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
    padding: var(--space-2xl) 0;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--glass-border));
    transform: translateX(-50%);
}

.timeline-v2-item {
    position: relative;
    width: 50%;
    padding: var(--space-lg);
    cursor: pointer;
}

.timeline-v2-item.right {
    margin-left: 50%;
    padding-left: calc(var(--space-3xl) + 20px);
}

.timeline-v2-item.left {
    padding-right: calc(var(--space-3xl) + 20px);
    text-align: right;
}

.timeline-v2-icon {
    position: absolute;
    top: var(--space-lg);
    width: 48px;
    height: 48px;
    background: var(--accent);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    z-index: 10;
    box-shadow: 0 0 0 6px var(--bg-primary), 0 4px 20px rgba(59, 130, 246, 0.3);
    transition: all var(--duration-normal) var(--ease-out);
}

.timeline-v2-item.right .timeline-v2-icon {
    left: calc(-24px);
}

.timeline-v2-item.left .timeline-v2-icon {
    right: calc(-24px);
}

.timeline-v2-icon.education {
    background: var(--success-gradient);
}

.timeline-v2-icon.certification {
    background: var(--warning-gradient);
}

.timeline-v2-item:hover .timeline-v2-icon {
    transform: scale(1.1);
    box-shadow: 0 0 0 6px var(--bg-primary), 0 8px 30px rgba(59, 130, 246, 0.4);
}

.timeline-v2-card {
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--duration-normal) var(--ease-out);
    box-shadow: var(--shadow-sm);
}

.timeline-v2-item:hover .timeline-v2-card {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.timeline-v2-period {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.timeline-v2-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.timeline-v2-company {
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.timeline-v2-summary {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
}

.timeline-v2-details {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all var(--duration-normal) var(--ease-out);
    margin-top: 0;
}

.timeline-v2-item.expanded .timeline-v2-details {
    max-height: 600px;
    opacity: 1;
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: var(--border);
}

.timeline-v2-details h4 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    margin-top: var(--space-md);
}

.timeline-v2-details h4:first-child {
    margin-top: 0;
}

.timeline-v2-details ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.timeline-v2-details li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline-v2-item.left .timeline-v2-details li {
    padding-left: 0;
    padding-right: var(--space-lg);
    text-align: right;
}

.timeline-v2-details li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: var(--radius-full);
}

.timeline-v2-item.left .timeline-v2-details li::before {
    left: auto;
    right: 0;
}

.timeline-v2-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
}

.timeline-v2-item.left .timeline-v2-tags {
    justify-content: flex-end;
}

.timeline-v2-tags span {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.timeline-v2-expand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-md);
    color: var(--text-muted);
    font-size: 0.8125rem;
    transition: color var(--duration-fast);
}

.timeline-v2-item.left .timeline-v2-expand {
    justify-content: flex-end;
}

.timeline-v2-item:hover .timeline-v2-expand {
    color: var(--accent);
}

.timeline-v2-expand i {
    transition: transform var(--duration-normal);
}

.timeline-v2-item.expanded .timeline-v2-expand i {
    transform: rotate(180deg);
}

.timeline-v2-item.expanded .timeline-v2-expand span {
    display: none;
}

/* Timeline V2 Responsive */
@media (max-width: 900px) {
    .timeline-line {
        left: 24px;
    }

    .timeline-v2-item {
        width: 100%;
        padding-left: calc(var(--space-3xl) + 30px);
        padding-right: var(--space-md);
    }

    .timeline-v2-item.right {
        margin-left: 0;
    }

    .timeline-v2-item.left {
        text-align: left;
        padding-right: var(--space-md);
    }

    .timeline-v2-item.right .timeline-v2-icon,
    .timeline-v2-item.left .timeline-v2-icon {
        left: 0;
        right: auto;
    }

    .timeline-v2-item.left .timeline-v2-details li {
        padding-left: var(--space-lg);
        padding-right: 0;
        text-align: left;
    }

    .timeline-v2-item.left .timeline-v2-details li::before {
        left: 0;
        right: auto;
    }

    .timeline-v2-item.left .timeline-v2-tags {
        justify-content: flex-start;
    }

    .timeline-v2-item.left .timeline-v2-expand {
        justify-content: flex-start;
    }
}

/* Legacy timeline support (keeping for backwards compatibility) */
.timeline-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: var(--space-2xl);
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--glass-border));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--space-2xl) + 2px);
    top: 4px;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border: 3px solid var(--bg-primary);
    border-radius: var(--radius-full);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.timeline-company {
    font-size: 1.25rem;
    font-weight: 800;
}

.timeline-role {
    color: var(--accent);
    font-weight: 600;
}

.timeline-meta {
    text-align: right;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.timeline-points li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.timeline-points li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

/* --- Case Studies Tab --- */
.cases-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.cases-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cases-header p {
    max-width: 600px;
    margin: 0 auto;
}

.cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.case-card {
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.12);
}

.case-img-placeholder {
    height: 200px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.case-img-placeholder.blue-bg {
    background: var(--accent-gradient);
    color: white;
}

.case-content {
    padding: var(--space-xl);
}

.case-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.case-desc {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-light);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* --- Case Card Expandable Details --- */
.case-card {
    position: relative;
}

.case-expand {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, var(--bg-secondary) 85%, transparent);
    padding: var(--space-lg) var(--space-xl);
    transform: translateY(100%);
    opacity: 0;
    transition: all var(--duration-normal) var(--ease-out);
    pointer-events: none;
    z-index: 10;
}

.case-card:hover .case-expand {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.case-expand-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--accent-light);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.case-expand-header i {
    width: 14px;
    height: 14px;
}

.case-expand-content {
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.case-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.case-meta i {
    width: 14px;
    height: 14px;
    color: var(--accent);
}

.case-expand-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.case-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.case-skills span {
    background: rgba(139, 92, 246, 0.15);
    color: var(--purple-light);
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    letter-spacing: 0.02em;
}

/* Adjust card height on hover to accommodate expanded content */
.case-card:hover {
    z-index: 20;
}

/* --- Hobbies Tab --- */
.hobbies-subtitle {
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.mb-8 {
    margin-bottom: var(--space-xl);
}

.hobbies-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    perspective: 1000px;
}

@media (min-width: 768px) {
    .hobbies-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Flip Card Container */
.hobby-flip-card {
    aspect-ratio: 1;
    cursor: pointer;
    perspective: 1000px;
}

.hobby-flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transform-style: preserve-3d;
}

.hobby-flip-card.flipped .hobby-flip-inner {
    transform: rotateY(180deg);
}

.hobby-flip-front,
.hobby-flip-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-lg);
    border: var(--border);
    overflow: hidden;
}

/* Front Face Styles */
.hobby-flip-front {
    background: var(--bg-secondary);
}

.hobby-flip-front h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-top: var(--space-md);
    color: var(--text-primary);
}

.hobby-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
    opacity: 0;
    transition: opacity var(--duration-normal);
}

.hobby-flip-card:hover .hobby-hint {
    opacity: 1;
}

/* Icon Wrapper with Gradient Backgrounds */
.hobby-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--duration-normal) var(--ease-spring);
}

.hobby-flip-card:hover .hobby-icon-wrapper {
    transform: scale(1.1);
}

.hobby-icon-wrapper svg {
    width: 36px;
    height: 36px;
    stroke-width: 1.5;
}

/* Color Themes for Each Hobby */
.hobby-icon-wrapper.travelling {
    background: var(--cyan-gradient);
    color: var(--white);
}

.hobby-icon-wrapper.volleyball {
    background: var(--orange-gradient);
    color: var(--white);
}

.hobby-icon-wrapper.photography {
    background: var(--purple-gradient);
    color: var(--white);
}

.hobby-icon-wrapper.technology {
    background: var(--success-gradient);
    color: var(--white);
}

/* Back Face Styles */
.hobby-flip-back {
    transform: rotateY(180deg);
    color: var(--white);
    justify-content: flex-start;
    padding-top: var(--space-xl);
}

.hobby-flip-back.travelling {
    background: linear-gradient(135deg, var(--cyan), var(--cyan-darker));
}

.hobby-flip-back.volleyball {
    background: linear-gradient(135deg, var(--orange), var(--orange-darker));
}

.hobby-flip-back.photography {
    background: linear-gradient(135deg, var(--purple), var(--purple-darker));
}

.hobby-flip-back.technology {
    background: linear-gradient(135deg, var(--success), var(--success-dark));
}

.hobby-back-icon {
    width: 32px;
    height: 32px;
    opacity: 0.3;
    margin-bottom: var(--space-sm);
}

.hobby-flip-back h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.hobby-flip-back p {
    font-size: 0.8125rem;
    line-height: 1.5;
    opacity: 0.9;
    flex: 1;
}

.hobby-stats {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.hobby-stats span {
    font-size: 0.75rem;
    opacity: 0.9;
}

.hobby-stats strong {
    display: block;
    font-size: 0.875rem;
}

/* Responsive adjustments */
@media (max-width: 767px) {
    .hobby-flip-back p {
        font-size: 0.75rem;
    }

    .hobby-flip-back h4 {
        font-size: 0.9375rem;
    }

    .hobby-icon-wrapper {
        width: 64px;
        height: 64px;
    }

    .hobby-icon-wrapper svg {
        width: 28px;
        height: 28px;
    }
}

/* --- Articles Tab --- */
.articles-subtitle {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.articles-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    max-width: 1100px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Article Card */
.article-card {
    position: relative;
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg), 0 8px 40px rgba(59, 130, 246, 0.15);
    border-color: rgba(255, 255, 255, 0.12);
}

/* Top Accent Bar */
.article-card-accent {
    height: 4px;
    width: 100%;
    transition: height var(--duration-normal) var(--ease-out);
}

.article-card:hover .article-card-accent {
    height: 6px;
}

.article-card-accent.digital-transformation {
    background: var(--accent-gradient);
}

.article-card-accent.failures-benefits {
    background: var(--orange-gradient);
}

.article-card-accent.running-problems {
    background: var(--purple-gradient);
}

/* Card Content */
.article-card-content {
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    flex: 1;
}

/* Meta Row: Tag + Read Time */
.article-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.article-tag {
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-light);
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-read-time {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.article-read-time i,
.article-read-time svg {
    width: 14px;
    height: 14px;
}

/* Title */
.article-card-title {
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    transition: color var(--duration-fast);
}

.article-card:hover .article-card-title {
    color: var(--accent-light);
}

/* Excerpt */
.article-card-excerpt {
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--text-secondary);
    flex: 1;
    margin-bottom: var(--space-lg);
}

/* Footer: Author + CTA */
.article-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--glass-border);
}

.article-author {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.article-author-img {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--glass-border);
}

.article-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: all var(--duration-fast);
}

.article-cta i,
.article-cta svg {
    width: 14px;
    height: 14px;
    transition: transform var(--duration-fast);
}

.article-card:hover .article-cta {
    color: var(--accent-light);
}

.article-card:hover .article-cta i,
.article-card:hover .article-cta svg {
    transform: translateX(3px);
}

/* Responsive: Article Cards */
@media (max-width: 767px) {
    .article-card-title {
        font-size: 1rem;
    }

    .article-card-excerpt {
        font-size: 0.8125rem;
    }

    .article-card-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
}

/* --- Chat Widget --- */
.chat-widget {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    z-index: 1000;
}

.chat-toggle-btn {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.4);
    transition: all var(--duration-normal) var(--ease-spring);
}

.chat-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(59, 130, 246, 0.5);
}

.chat-window {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 480px;
    height: 700px;
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: chatSlideUp 0.4s var(--ease-spring);
}

@keyframes chatSlideUp {
    from {
        transform: translateY(20px) scale(0.95);
        opacity: 0;
    }

    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

@media (max-width: 640px) {
    .chat-widget {
        bottom: var(--space-md);
        right: var(--space-md);
    }

    .chat-window {
        width: calc(100vw - var(--space-xl));
        height: 80vh;
        max-height: 700px;
    }
}

.chat-header {
    background: var(--accent-gradient);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-identity {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.avatar {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.875rem;
}

.bot-name {
    font-weight: 700;
    font-size: 0.9375rem;
    color: white;
}

.bot-status {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success-light);
    border-radius: var(--radius-full);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.chat-close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--duration-fast);
}

.chat-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chat-messages {
    flex: 1;
    padding: var(--space-md);
    overflow-y: auto;
    background: var(--bg-primary);
}

.message {
    margin-bottom: var(--space-md);
    display: flex;
    animation: messageSlide 0.3s var(--ease-out);
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    justify-content: flex-end;
}

.msg-bubble {
    max-width: 80%;
    padding: 0.875rem var(--space-md);
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.message.bot .msg-bubble {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-bottom-left-radius: var(--space-xs);
}

.message.user .msg-bubble {
    background: var(--accent);
    color: white;
    border-bottom-right-radius: var(--space-xs);
}

.security-gate {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin-top: var(--space-md);
}

.gate-header {
    color: var(--accent-light);
    font-weight: 700;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.gate-desc {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

#gate-form input {
    display: block;
    width: 100%;
    margin-bottom: var(--space-sm);
    background: var(--bg-primary);
    border: var(--border);
    padding: 0.625rem var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
}

#gate-form input:focus {
    border-color: var(--accent);
}

#gate-form input:focus:not(:focus-visible) {
    outline: none;
}

#gate-form input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

#gate-form button {
    width: 100%;
    background: var(--accent);
    border: none;
    color: white;
    padding: 0.625rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--duration-fast);
}

#gate-form button:hover {
    background: var(--accent-dark);
}

.chat-input-area {
    padding: var(--space-md);
    border-top: var(--border);
    display: flex;
    gap: var(--space-sm);
    background: var(--bg-secondary);
}

#chat-input {
    flex: 1;
    background: var(--bg-primary);
    border: var(--border);
    color: var(--text-primary);
    padding: 0.75rem var(--space-md);
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: border-color var(--duration-fast);
}

#chat-input:focus {
    border-color: var(--accent);
}

#chat-input:focus:not(:focus-visible) {
    outline: none;
}

#chat-input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

#chat-send {
    background: var(--accent);
    color: white;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast) var(--ease-out);
}

#chat-send:hover {
    background: var(--accent-dark);
    transform: scale(1.05);
}

/* Chat History Styles */
.chat-history-divider {
    display: flex;
    align-items: center;
    margin: var(--space-md) 0;
    color: var(--text-muted);
    font-size: 0.75rem;
}

.chat-history-divider::before,
.chat-history-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--glass-border);
}

.chat-history-divider span {
    padding: 0 var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.message.history .msg-bubble {
    opacity: 0.7;
}

.message.history.bot .msg-bubble {
    background: var(--bg-secondary);
}

/* Chat Download Button */
.chat-download-btn {
    background: transparent;
    color: var(--text-muted);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast) var(--ease-out);
}

.chat-download-btn:hover {
    color: var(--accent);
    background: rgba(59, 130, 246, 0.1);
}

/* --- Contact Section --- */
.innovate-section {
    padding: var(--space-3xl) 0;
}

.innovate-card {
    padding: var(--space-2xl);
}

/* Contact Form Styles */
.contact-form {
    margin-top: var(--space-xl);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.form-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group.full-width {
    margin-top: var(--space-lg);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group label .required {
    color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-primary);
    border: var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-main);
    transition: all var(--duration-fast) var(--ease-out);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
    padding-right: 3rem;
}

.form-group select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-sm);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.form-group input:focus:not(:focus-visible),
.form-group select:focus:not(:focus-visible),
.form-group textarea:focus:not(:focus-visible) {
    outline: none;
}

.form-group input:focus-visible,
.form-group select:focus-visible,
.form-group textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* --- Enhanced Form Validation States --- */

/* Floating Label Support (Optional Enhancement) */
.form-group.floating-label {
    position: relative;
}

.form-group.floating-label label {
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    transition: all var(--duration-fast) var(--ease-out);
    pointer-events: none;
    background: var(--bg-primary);
    padding: 0 var(--space-xs);
    color: var(--text-muted);
}

.form-group.floating-label.has-value label,
.form-group.floating-label input:focus + label,
.form-group.floating-label textarea:focus + label {
    top: 0;
    font-size: 0.75rem;
    color: var(--accent);
}

/* Validation States */
.form-group.success input,
.form-group.success select,
.form-group.success textarea {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.05);
}

.form-group.success input:focus,
.form-group.success select:focus,
.form-group.success textarea:focus {
    border-color: var(--success);
    box-shadow: var(--focus-ring-success);
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--error);
    background: rgba(239, 68, 68, 0.05);
}

.form-group.error input:focus,
.form-group.error select:focus,
.form-group.error textarea:focus {
    border-color: var(--error);
    box-shadow: var(--focus-ring-error);
}

/* Validation Icons */
.form-group::after {
    content: '';
    position: absolute;
    right: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity var(--duration-fast);
}

.form-group.success::after {
    opacity: 1;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2310b981' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
}

.form-group.error::after {
    opacity: 1;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23ef4444' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='12' y1='8' x2='12' y2='12'%3E%3C/line%3E%3Cline x1='12' y1='16' x2='12.01' y2='16'%3E%3C/line%3E%3C/svg%3E");
}

/* Error Message */
.form-error,
.error-message {
    font-size: 0.8125rem;
    color: var(--error);
    margin-top: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    animation: slideDown 0.2s var(--ease-out);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-success,
.success-message {
    font-size: 0.8125rem;
    color: var(--success);
    margin-top: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    animation: slideDown 0.2s var(--ease-out);
}

/* Character Count for Textarea */
.char-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: right;
    margin-top: var(--space-xs);
}

.char-count.limit-warning {
    color: var(--warning);
}

.char-count.limit-error {
    color: var(--error);
}

/* Consent Checkbox */
.consent-group {
    margin-top: var(--space-lg);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 3px;
    cursor: pointer;
    accent-color: var(--accent);
}

.checkbox-label a {
    color: var(--accent);
    text-decoration: underline;
}

.checkbox-label a:hover {
    color: var(--accent-light);
}

/* Form Footer */
.form-footer {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

@media (min-width: 768px) {
    .form-footer {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.btn-lg {
    padding: var(--space-md) var(--space-2xl);
    font-size: 1.125rem;
}

/* Contact Status Messages */
.contact-status {
    margin-top: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 500;
}

.contact-status.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.contact-status.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error);
}

.contact-status.loading {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--accent);
}

/* --- Footer --- */
footer {
    background: var(--bg-secondary);
    border-top: var(--border);
    padding: var(--space-2xl) 0;
    margin-top: var(--space-3xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-brand-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.footer-brand {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand-row .social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--linkedin-blue);
    border: 1px solid var(--linkedin-blue);
    color: var(--white);
    transition: all var(--duration-normal) var(--ease-out);
}

.footer-brand-row .social-link:hover {
    background: var(--linkedin-blue-dark);
    border-color: var(--linkedin-blue-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(10, 102, 194, 0.4);
}

.footer-brand-row .social-link svg {
    width: 18px;
    height: 18px;
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: color var(--duration-fast);
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-legal {
    width: 100%;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: var(--border);
}

/* --- Language Switcher --- */
.lang-switcher {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    gap: var(--space-xs);
    background: var(--bg-secondary);
    padding: var(--space-xs);
    border-radius: var(--radius-full);
    border: var(--border);
    z-index: 100;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--duration-fast);
}

.lang-btn:hover {
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--accent);
    color: white;
}

/* --- Scroll Animations --- */
.fade-in {
    animation: fadeInUp 0.6s var(--ease-out) forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Responsive Adjustments --- */
@media (max-width: 640px) {
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .tabs-nav {
        width: 100%;
        justify-content: flex-start;
        padding: var(--space-xs);
    }

    .agent-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Video Card Styling --- */
.hobby-card.video-card {
    position: relative;
    overflow: hidden;
}

.hobby-card.video-card iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-xl);
}

.hobby-card.video-card .hobby-overlay {
    pointer-events: none;
}

/* --- Legal Modal --- */
.legal-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.legal-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.legal-modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 700px;
    max-height: 85vh;
    overflow-y: auto;
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    animation: modalSlideUp 0.3s var(--ease-out);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.legal-modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast);
}

.legal-modal-close:hover {
    background: var(--accent);
    color: white;
}

.legal-modal-content h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--space-lg);
    padding-right: var(--space-2xl);
}

.legal-modal-body {
    color: var(--text-secondary);
    line-height: 1.8;
}

.legal-modal-body h3,
.legal-modal-body h4 {
    color: var(--text-primary);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
    font-weight: 700;
}

.legal-modal-body h3 {
    font-size: 1.125rem;
}

.legal-modal-body h4 {
    font-size: 1rem;
}

.legal-modal-body p {
    margin-bottom: var(--space-md);
}

.legal-modal-body a {
    color: var(--accent-light);
}

.legal-modal-body a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* --- Terminal CLI --- */
.terminal-toggle-btn {
    position: fixed;
    bottom: var(--space-xl);
    left: var(--space-xl);
    width: 56px;
    height: 56px;
    background: var(--success-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: var(--white);
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-normal) var(--ease-out);
}

.terminal-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(16, 185, 129, 0.5);
}

.terminal-cli {
    position: fixed;
    inset: 0;
    z-index: 2500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    background: rgba(0, 0, 0, 0.9);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.terminal-cli.hidden {
    display: none;
}

.terminal-window {
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-bg-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 25px 100px rgba(16, 185, 129, 0.2);
    display: flex;
    flex-direction: column;
}

.terminal-titlebar {
    background: var(--terminal-bg-light);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border-bottom: 1px solid var(--terminal-border);
}

.terminal-buttons {
    display: flex;
    gap: 8px;
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    cursor: pointer;
}

.terminal-btn.red {
    background: var(--terminal-red);
}

.terminal-btn.yellow {
    background: var(--terminal-yellow);
}

.terminal-btn.green {
    background: var(--terminal-green-bright);
}

.terminal-title {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.875rem;
    color: var(--terminal-info);
}

.terminal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    max-height: 60vh;
}

.terminal-output {
    color: var(--terminal-green);
}

.terminal-line {
    white-space: pre-wrap;
    word-break: break-word;
    margin-bottom: 4px;
}

.terminal-logo {
    color: var(--terminal-green);
    font-weight: bold;
}

.terminal-input {
    color: var(--terminal-green-light);
}

.terminal-info {
    color: var(--terminal-info);
}

.terminal-error {
    color: var(--error);
}

.terminal-loading {
    color: var(--warning);
}

.terminal-divider {
    color: var(--terminal-divider);
}

.terminal-input-line {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: var(--space-md);
}

.terminal-prompt {
    color: var(--terminal-green);
    font-weight: bold;
}

.terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--terminal-green-light);
    font-family: inherit;
    font-size: inherit;
    caret-color: var(--terminal-green);
}

.terminal-cursor {
    color: var(--terminal-green);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

.terminal-quick-cmds {
    padding: var(--space-md);
    border-top: 1px solid var(--terminal-bg-light);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.terminal-quick-cmds button {
    padding: 6px 12px;
    font-size: 0.75rem;
    font-family: 'SF Mono', monospace;
    background: transparent;
    border: 1px solid var(--terminal-border);
    color: var(--terminal-green);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast);
}

.terminal-quick-cmds button:hover {
    background: rgba(34, 197, 94, 0.1);
    border-color: var(--terminal-green);
}

/* --- Cookie Consent Banner --- */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 3000;
    background: var(--bg-secondary);
    border-top: var(--border);
    padding: var(--space-lg) var(--space-xl);
    transform: translateY(100%);
    transition: transform var(--duration-normal) var(--ease-out);
}

.cookie-banner.visible {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.cookie-text {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    flex: 1;
    min-width: 300px;
}

.cookie-icon {
    color: var(--accent);
    flex-shrink: 0;
}

.cookie-text strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.cookie-text p {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
    margin: 0;
}

.cookie-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.cookie-btn {
    padding: 10px 20px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--duration-fast);
    display: flex;
    align-items: center;
    gap: 6px;
    min-height: 44px;
    min-width: 44px;
}

.cookie-btn-settings {
    background: transparent;
    border: var(--border);
    color: var(--text-secondary);
}

.cookie-btn-settings:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.cookie-btn-reject {
    background: transparent;
    border: var(--border);
    color: var(--text-muted);
}

.cookie-btn-reject:hover {
    border-color: var(--text-secondary);
    color: var(--text-secondary);
}

.cookie-btn-accept {
    background: var(--accent);
    border: none;
    color: white;
}

.cookie-btn-accept:hover {
    background: var(--accent-dark);
}

/* Cookie Settings Modal */
.cookie-modal {
    position: fixed;
    inset: 0;
    z-index: 3500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal);
}

.cookie-modal.visible {
    opacity: 1;
    visibility: visible;
}

.cookie-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
}

.cookie-modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 500px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
}

.cookie-modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cookie-modal-close:hover {
    background: var(--accent);
    color: white;
}

.cookie-modal-content h2 {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
}

.cookie-category {
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
}

.cookie-category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.cookie-category-header label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.cookie-category-header input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.cookie-required {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: var(--radius-md);
}

.cookie-category p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin: 0;
}

.cookie-modal-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
    margin-top: var(--space-lg);
}

/* --- Resume Modal --- */
.resume-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal);
}

.resume-modal.visible {
    opacity: 1;
    visibility: visible;
}

.resume-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.resume-modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 500px;
    width: 100%;
    animation: modalSlideUp 0.3s var(--ease-out);
}

.resume-modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast);
}

.resume-modal-close:hover {
    background: var(--accent);
    color: white;
}

.resume-modal-content h2 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.resume-modal-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--space-lg);
}

.resume-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.resume-option {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: var(--border);
    border-radius: var(--radius-lg);
}

.resume-option-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.resume-option-info {
    flex: 1;
}

.resume-option-info strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.resume-option-info span {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.resume-lang-btns {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.resume-lang-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    min-height: 36px;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--duration-fast);
}

.resume-lang-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.resume-language-note {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding: var(--space-sm) var(--space-md);
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    color: var(--accent-light);
}

/* Resume Toast */
.resume-toast {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-secondary);
    border: var(--border);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    z-index: 4000;
    opacity: 0;
    transition: all var(--duration-normal) var(--ease-out);
}

.resume-toast.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.resume-toast-success {
    border-color: var(--success);
    color: var(--success);
}

.resume-toast-info {
    border-color: var(--accent);
    color: var(--accent-light);
}

/* --- Testimonials Section --- */
/* Testimonials as tab content */
.testimonials-tab-content {
    padding: var(--space-lg) 0;
}

.testimonials-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.testimonials-header h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--space-sm);
}

.testimonials-header p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.linkedin-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--linkedin-blue);
    color: var(--white);
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--duration-fast);
}

.linkedin-btn:hover {
    background: var(--linkedin-blue-dark);
    transform: translateY(-2px);
}

/* Written Testimonials - Carousel */
.testimonials-carousel-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.testimonials-carousel {
    flex: 1;
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-slide {
    min-width: 100%;
    width: 100%;
    flex-shrink: 0;
    padding: 0 var(--space-sm);
    box-sizing: border-box;
}

.testimonial-card-carousel {
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    position: relative;
    min-height: 280px;
    display: flex;
    flex-direction: column;
}

.testimonial-quote-large {
    position: absolute;
    top: var(--space-lg);
    left: var(--space-xl);
    font-size: 6rem;
    font-family: Georgia, serif;
    color: var(--accent);
    opacity: 0.15;
    line-height: 1;
    pointer-events: none;
}

.testimonial-text-carousel {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: var(--space-xl);
    position: relative;
    z-index: 1;
    flex: 1;
    padding-top: var(--space-lg);
}

.testimonial-author-carousel {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--glass-border);
    text-decoration: none;
    transition: all var(--duration-fast);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin: 0 calc(-1 * var(--space-md));
}

.testimonial-author-carousel:hover {
    background: rgba(59, 130, 246, 0.08);
}

.testimonial-avatar-carousel {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.testimonial-info-carousel {
    flex: 1;
}

.testimonial-info-carousel strong {
    display: block;
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 2px;
}

.testimonial-info-carousel span {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.testimonial-link-icon-carousel {
    color: var(--text-muted);
    opacity: 0;
    transition: all var(--duration-fast);
    flex-shrink: 0;
}

.testimonial-author-carousel:hover .testimonial-link-icon-carousel {
    opacity: 1;
    color: var(--accent);
}

/* Carousel Navigation */
.carousel-nav {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    border: var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast);
    flex-shrink: 0;
}

.carousel-nav:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    transform: scale(1.05);
}

.carousel-nav:active {
    transform: scale(0.95);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    border: none;
    cursor: pointer;
    transition: all var(--duration-fast);
}

.carousel-dot:hover {
    background: var(--text-muted);
}

.carousel-dot.active {
    background: var(--accent);
    width: 32px;
}

/* Carousel responsive */
@media (max-width: 768px) {
    .carousel-nav {
        width: 40px;
        height: 40px;
    }

    .testimonial-card-carousel {
        padding: var(--space-lg);
        min-height: 320px;
    }

    .testimonial-text-carousel {
        font-size: 0.9375rem;
    }

    .testimonial-quote-large {
        font-size: 4rem;
    }

    .testimonial-avatar-carousel {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }
}

/* Legacy grid styles (kept for backwards compatibility) */
.testimonials-written {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.testimonial-card {
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    position: relative;
    display: flex;
    flex-direction: column;
    transition: all var(--duration-normal) var(--ease-out);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: var(--space-md);
    left: var(--space-lg);
    font-size: 4rem;
    font-family: Georgia, serif;
    color: var(--accent);
    opacity: 0.15;
    line-height: 1;
    pointer-events: none;
}

.testimonial-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Featured/wide cards span full width */
.testimonial-card.featured {
    grid-column: 1 / -1;
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, var(--bg-secondary) 100%);
}

.testimonial-card.featured::before {
    opacity: 0.2;
}

.testimonial-text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
    flex: 1;
    font-size: 0.9375rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: auto;
    padding-top: var(--space-md);
    border-top: 1px solid var(--glass-border);
}

.testimonial-author-link {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
    padding: var(--space-sm);
    margin: calc(-1 * var(--space-sm));
    border-radius: var(--radius-lg);
    transition: all var(--duration-fast);
}

.testimonial-author-link:hover {
    background: rgba(59, 130, 246, 0.08);
}

.testimonial-author-link:hover .testimonial-link-icon {
    opacity: 1;
    color: var(--accent);
}

.testimonial-link-icon {
    opacity: 0.4;
    color: var(--text-muted);
    margin-left: auto;
    flex-shrink: 0;
    transition: all var(--duration-fast);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    font-size: 0.875rem;
}

.testimonial-avatar-img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
}

.testimonial-info {
    flex: 1;
    min-width: 0;
}

.testimonial-info strong {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
}

.testimonial-info span {
    font-size: 0.8125rem;
    color: var(--text-muted);
    display: block;
}

/* Video Testimonials Section */
.testimonials-video-section {
    margin-top: var(--space-2xl);
    padding-top: var(--space-2xl);
    border-top: var(--border);
}

.testimonials-video-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.testimonials-video-title i {
    color: var(--accent);
}

/* 2x2 Video Grid - Full Width */
.testimonials-video-grid-2x2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.testimonial-video-card-compact {
    background: var(--bg-primary);
    border: var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.testimonial-video-card-compact:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.15);
    transform: translateY(-4px);
}

.testimonial-video-compact {
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
    position: relative;
}

.testimonial-video-compact iframe,
.testimonial-video-compact video {
    width: 100%;
    height: 100%;
    border: none;
    object-fit: cover;
}

.testimonial-video-caption {
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
}

.testimonial-video-caption strong {
    display: block;
    font-size: 0.9375rem;
    color: var(--text-primary);
    font-weight: 600;
}

.testimonial-video-caption .caption-subtitle {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Legacy full-width video grid (keeping for backwards compatibility) */
.testimonials-video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-lg);
}

.testimonial-video-card {
    background: var(--bg-primary);
    border: var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.testimonial-video-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(59, 130, 246, 0.1);
}

.testimonial-video {
    aspect-ratio: 16/9;
    background: var(--bg-tertiary);
    position: relative;
}

.testimonial-video iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.testimonial-video-info {
    padding: var(--space-lg);
}

.testimonial-video-info strong {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.testimonial-video-info span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.testimonial-video-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    color: var(--text-muted);
}

/* Testimonials Responsive */
@media (max-width: 768px) {
    .testimonials-written {
        grid-template-columns: 1fr;
    }

    .testimonial-card.featured {
        grid-column: 1;
    }

    .testimonials-video-grid {
        grid-template-columns: 1fr;
    }

    .testimonials-video-grid-2x2 {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .testimonial-info span {
        white-space: normal;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-text {
        flex-direction: column;
        align-items: center;
    }

    .cookie-actions {
        width: 100%;
        justify-content: center;
    }

    .terminal-toggle-btn {
        bottom: var(--space-lg);
        left: var(--space-lg);
        width: 48px;
        height: 48px;
    }
}

/* ============================================
   LOADING STATES & SKELETON LOADERS
   ============================================ */

/* Skeleton Loader Animation */
.skeleton-loader {
    background: linear-gradient(90deg,
            rgba(30, 41, 59, 0.4) 0%,
            rgba(30, 41, 59, 0.6) 50%,
            rgba(30, 41, 59, 0.4) 100%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
    min-height: 1rem;
}

@keyframes skeleton-shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* Content Loading State */
.content-loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
    min-height: 200px;
}

.content-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg,
            transparent 0%,
            rgba(59, 130, 246, 0.05) 50%,
            transparent 100%);
    background-size: 200% 100%;
    animation: content-loading-sweep 2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes content-loading-sweep {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* Content Loaded Animation */
.content-loaded {
    animation: content-fade-in 0.5s var(--ease-out) forwards;
}

@keyframes content-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Staggered Reveal for Timeline Items */
.timeline-v2-item {
    animation: timeline-reveal 0.6s var(--ease-out) forwards;
    animation-delay: calc(var(--item-index, 0) * 0.1s);
}

@keyframes timeline-reveal {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Case Card Hover Enhancement */
.case-card {
    transition: all var(--duration-normal) var(--ease-out);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(59, 130, 246, 0.15);
}

/* Testimonial Card Enhancement */
.testimonial-card {
    transition: all var(--duration-normal) var(--ease-out);
}

.testimonial-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

/* Stats Counter Animation */
.stat-value {
    transition: all var(--duration-normal) var(--ease-spring);
}

.stats-grid:not(.content-loading) .stat-card:hover .stat-value {
    transform: scale(1.1);
    color: var(--accent-light);
}

/* ============================================
   AUTH UI STYLES
   ============================================ */

/* Auth Container */
.auth-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: 1100;
}

/* Sign In Button */
.auth-signin-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px 20px;
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: var(--border);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
}

.auth-signin-btn:hover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-light);
    transform: translateY(-2px);
}

.auth-signin-btn i {
    width: 16px;
    height: 16px;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 12px 6px 6px;
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: var(--border);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
}

.user-menu-trigger:hover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
    background-size: cover;
    background-position: center;
}

.user-name {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-trigger i {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    transition: transform var(--duration-fast);
}

.user-menu-trigger:hover i {
    color: var(--accent);
}

/* User Dropdown */
.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 240px;
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: dropdownSlide 0.2s var(--ease-out);
}

@keyframes dropdownSlide {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-dropdown-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-tertiary);
}

.user-avatar-lg {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    background-size: cover;
    background-position: center;
}

.user-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.user-fullname {
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-email {
    font-size: 0.8125rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-dropdown-divider {
    height: 1px;
    background: var(--glass-border);
}

.user-dropdown-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--duration-fast);
    text-align: left;
}

.user-dropdown-item:hover {
    background: rgba(59, 130, 246, 0.08);
    color: var(--text-primary);
}

.user-dropdown-item i {
    width: 16px;
    height: 16px;
}

.user-dropdown-signout {
    color: var(--error);
}

.user-dropdown-signout:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

/* Auth Modal */
.auth-modal {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal);
}

.auth-modal.visible {
    opacity: 1;
    visibility: visible;
}

.auth-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.auth-modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 400px;
    width: 100%;
    text-align: center;
    animation: modalSlideUp 0.3s var(--ease-out);
}

.auth-modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-muted);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast);
}

.auth-modal-close:hover {
    background: var(--accent);
    color: white;
}

.auth-modal-icon {
    width: 64px;
    height: 64px;
    background: rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    color: var(--accent);
}

.auth-modal-icon i {
    width: 32px;
    height: 32px;
}

.auth-modal-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.auth-prompt-message {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.auth-modal-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.auth-modal-footer {
    margin-top: var(--space-lg);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Protected Feature Overlay */
.auth-overlay {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.9);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-xl);
    z-index: 100;
    border-radius: inherit;
}

.auth-overlay-icon {
    width: 56px;
    height: 56px;
    background: rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--accent);
}

.auth-overlay-icon i {
    width: 28px;
    height: 28px;
}

.auth-overlay h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.auth-overlay p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    max-width: 300px;
}

/* Protected Section Styling */
[data-protected] {
    position: relative;
}

[data-protected].protected-locked {
    pointer-events: none;
}

[data-protected].protected-locked>*:not(.auth-overlay) {
    filter: blur(4px);
    user-select: none;
}

[data-protected].protected-locked .auth-overlay {
    pointer-events: auto;
}

/* Chat Auth Required State */
.chat-widget.auth-required .chat-toggle-btn {
    animation: authPulse 2s infinite;
}

@keyframes authPulse {

    0%,
    100% {
        box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.4);
    }

    50% {
        box-shadow: var(--shadow-lg), 0 0 50px rgba(59, 130, 246, 0.6);
    }
}

/* Mobile Auth Styles */
@media (max-width: 640px) {
    .auth-container {
        top: var(--space-md);
        right: var(--space-md);
    }

    .auth-signin-btn span {
        display: none;
    }

    .auth-signin-btn {
        padding: 10px;
    }

    .user-name {
        display: none;
    }

    .user-menu-trigger {
        padding: 6px;
    }

    .user-dropdown {
        right: -8px;
        min-width: 200px;
    }
}

/* Accessibility: Respect user motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Error toast notifications — moved from errors.js */
.error-toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 10000;
    animation: slideIn 0.3s ease;
}
.error-toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: linear-gradient(135deg, #1e293b, #0f172a);
    border: 1px solid #ef4444;
    border-radius: 12px;
    color: #f1f5f9;
    font-size: 14px;
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.3);
}
.error-toast-icon { font-size: 18px; }
.error-toast-close {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 20px;
    cursor: pointer;
    padding: 0 4px;
}
.error-toast-close:hover { color: #f1f5f9; }
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ============================================
   ACCESSIBILITY: Focus Visible (WCAG 2.4.11)
   Ensure all interactive elements have a visible
   focus indicator for keyboard users.
   ============================================ */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* ============================================
   MOBILE EXPERIENCE ENHANCEMENTS
   ============================================ */

@media (max-width: 640px) {
    /* Enhanced Touch Targets (48px minimum) */
    .btn,
    button,
    a.btn,
    input[type="button"],
    input[type="submit"] {
        min-height: 48px;
        min-width: 48px;
        padding: var(--space-md) var(--space-lg);
    }

    /* Touch-friendly spacing */
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    /* Optimize font sizes for mobile readability */
    .hero-title {
        font-size: clamp(2rem, 10vw, 3rem);
        line-height: 1.1;
    }

    .hero-desc {
        font-size: 1rem;
        line-height: 1.6;
    }

    /* Mobile-optimized spacing */
    .container {
        padding-inline: var(--space-md);
    }

    .glass-card {
        padding: var(--space-lg);
    }

    /* Bottom padding for mobile keyboards */
    .contact-form,
    .chat-input-area {
        padding-bottom: calc(var(--space-xl) + env(safe-area-inset-bottom));
    }

    /* Sticky CTA on mobile (optional) */
    .mobile-cta-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        padding: var(--space-md);
        background: var(--glass-bg);
        backdrop-filter: var(--glass-blur);
        border-top: var(--border);
        z-index: var(--z-sticky);
        display: flex;
        gap: var(--space-sm);
        box-shadow: var(--shadow-lg);
    }

    .mobile-cta-bar .btn {
        flex: 1;
    }

    /* Enhanced mobile card interactions */
    .glass-card {
        /* Disable hover effects on mobile (use tap) */
        transition: transform var(--duration-fast) var(--ease-out);
    }

    .glass-card:active {
        transform: scale(0.98);
    }

    /* Mobile-optimized modal */
    .modal,
    #resume-modal,
    .cookie-settings-modal {
        width: calc(100vw - var(--space-lg));
        max-width: none;
        margin: var(--space-md);
    }

    /* Improve mobile form experience */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

/* Tablet-specific optimizations */
@media (min-width: 641px) and (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .hero-visual {
        order: -1; /* Show image first on tablet */
    }
}

/* Touch device optimizations (regardless of size) */
@media (hover: none) and (pointer: coarse) {
    /* Enhance tap targets */
    a, button, .tab-btn, .btn {
        min-height: 44px;
    }

    /* Remove hover effects on touch devices */
    .glass-card:hover {
        transform: none;
    }

    /* Use active state instead */
    .glass-card:active {
        transform: translateY(-2px);
    }

    .btn:hover {
        transform: none;
    }

    .btn:active {
        transform: scale(0.96);
    }
}
/* ============================================
   ITERATION 2: PERFORMANCE & VISUAL ENHANCEMENTS
   ============================================ */

/* --- Section Dividers --- */
.section-divider {
    position: relative;
    height: 1px;
    margin: var(--space-3xl) 0;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.3;
}

.section-divider-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-primary);
    padding: var(--space-sm) var(--space-md);
    color: var(--accent);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- Back to Top Button with Progress --- */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 56px;
    height: 56px;
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: var(--border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    z-index: var(--z-sticky);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent);
    color: var(--white);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(59, 130, 246, 0.4);
}

.back-to-top .progress-ring {
    position: absolute;
    top: 0;
    left: 0;
    transform: rotate(-90deg);
}

.back-to-top .progress-ring-circle {
    transition: stroke-dashoffset 0.1s linear;
}

.back-to-top svg:not(.progress-ring) {
    position: relative;
    z-index: 1;
}

/* --- Pulse Glow Animation --- */
@keyframes pulseGlow {
    0%, 100% {
        box-shadow: var(--shadow-md), 0 0 20px rgba(59, 130, 246, 0.2);
    }
    50% {
        box-shadow: var(--shadow-md), 0 0 40px rgba(59, 130, 246, 0.4);
    }
}

.pulse-glow {
    animation: pulseGlow 3s ease-in-out infinite;
}

/* --- Gradient Border Utility --- */
.gradient-border {
    position: relative;
    background: var(--glass-bg);
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: var(--gradient-border-accent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

/* --- Enhanced Button Glows --- */
.btn-primary,
.btn-gradient {
    box-shadow: var(--shadow-md), 0 0 24px rgba(59, 130, 246, 0.2);
}

.btn-primary:hover,
.btn-gradient:hover {
    box-shadow: var(--shadow-lg), 0 0 40px rgba(59, 130, 246, 0.4);
}

/* --- Active Tab Glow --- */
.tab-btn.active {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

/* --- Scroll Animation Utilities --- */
.animate-in {
    animation: fadeInUp 0.6s var(--ease-out) forwards;
}

.animate-in-delay-1 {
    animation-delay: 0.1s;
}

.animate-in-delay-2 {
    animation-delay: 0.2s;
}

.animate-in-delay-3 {
    animation-delay: 0.3s;
}

/* --- Backdrop Filter Fallback --- */
@supports not (backdrop-filter: blur(20px)) {
    .glass-card,
    .back-to-top {
        background: var(--bg-tertiary);
    }
}

/* ============================================
   ITERATIONS 3-5: POLISH & MICRO-INTERACTIONS
   ============================================ */

/* --- Tab Content Transitions (Iteration 3) --- */
.tab-content {
    animation: fadeInTab 0.4s var(--ease-out);
}

@keyframes fadeInTab {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Scroll Progress Bar (Iteration 3) --- */
.scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--accent-gradient);
    z-index: var(--z-sticky);
    transition: width 0.1s linear;
    will-change: width;
}

/* --- Shake Animation for Errors (Iteration 4) --- */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-10px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(10px);
    }
}

.shake {
    animation: shake 0.5s;
}

/* --- Tooltip System (Iteration 4) --- */
.tooltip {
    position: absolute;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    box-shadow: var(--shadow-md);
    z-index: var(--z-dropdown);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--duration-fast);
}

.tooltip.visible {
    opacity: 1;
}

.tooltip::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid var(--bg-tertiary);
}

/* --- Progressive Image Loading (Iteration 5) --- */
img[data-src] {
    filter: blur(10px);
    transition: filter var(--duration-slow) var(--ease-out);
}

img.img-loaded {
    filter: blur(0);
}

/* --- Reduced Motion Override (Accessibility) --- */
@media (prefers-reduced-motion: reduce) {
    .tab-content,
    .animate-in,
    .shake {
        animation: none !important;
    }

    .scroll-progress-bar {
        transition: none;
    }

    img[data-src] {
        filter: none;
    }
}