/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Palette - Use for KEY actions only */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-darker: #4338ca;

    /* Secondary - For supporting elements */
    --secondary: #8b5cf6;
    --secondary-light: #a78bfa;

    /* Accent - For highlights and special callouts */
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    --accent-dark: #0891b2;

    /* Semantic Colors - Enhanced contrast */
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Backgrounds - Refined for better depth */
    --bg-primary: #0a0a1e;
    --bg-secondary: #14142e;
    --bg-tertiary: #1a1a38;
    --bg-elevated: #202044;

    /* Text - Better contrast ratios */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;

    /* Borders */
    --border-subtle: rgba(248, 250, 252, 0.08);
    --border-medium: rgba(248, 250, 252, 0.12);
    --border-strong: rgba(248, 250, 252, 0.20);

    /* Enhanced Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-hero: linear-gradient(180deg, #0a0a1e 0%, #14142e 50%, #1a1a38 100%);

    /* Glassmorphism */
    --glass-bg: rgba(20, 20, 46, 0.60);
    --glass-border: rgba(248, 250, 252, 0.10);

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Font Sizes - Following 8pt grid with better scaling */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    --text-6xl: 3.75rem;     /* 60px */

    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* Spacing - 8px base unit */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */

    /* Legacy spacing for compatibility */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Enhanced Shadow System */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px 0 rgba(0, 0, 0, 0.10);
    --shadow-md: 0 4px 8px 0 rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px 0 rgba(0, 0, 0, 0.20);
    --shadow-xl: 0 12px 24px 0 rgba(0, 0, 0, 0.25);
    --shadow-2xl: 0 24px 48px 0 rgba(0, 0, 0, 0.30);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    --shadow-glow-primary: 0 0 24px rgba(99, 102, 241, 0.4);
    --shadow-glow-accent: 0 0 24px rgba(6, 182, 212, 0.4);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    overflow-x: hidden;
    cursor: none;
}

/* Make all images fluid by default */
img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Custom Cursor */
.cursor-follower {
    position: fixed;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s ease;
    mix-blend-mode: difference;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.loader-text {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-md);
}

.loader-bar {
    display: block;
    margin: 0 auto;
    height: 4px;
    min-width: 80%;
    width: fit-content;
    background: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.loader-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    animation: loading 2s ease-in-out infinite;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

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

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
    cursor: none;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    color: var(--primary);
    overflow: hidden;
    width: 0;
    transition: width 0.3s ease;
}

.nav-link:hover::before {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: none;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-particles::before,
.hero-particles::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.hero-particles::before {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.hero-particles::after {
    top: 60%;
    right: 20%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); opacity: 0.5; }
    50% { transform: translateY(-20px); opacity: 1; }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--success-bg);
    border: 1px solid rgba(16, 185, 129, 0.4);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--space-6);
    margin-bottom: var(--space-lg);
    font-size: var(--text-sm);
    color: var(--success);
    font-weight: var(--font-semibold);
    backdrop-filter: blur(8px);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
    font-size: var(--text-xl);
    color: var(--text-tertiary);
    margin-bottom: var(--space-2);
    font-weight: var(--font-medium);
}

.title-name {
    display: block;
    font-size: var(--text-6xl);
    font-weight: var(--font-extrabold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-2);
    line-height: var(--leading-tight);
    letter-spacing: -0.02em;
}

.title-role {
    display: block;
    font-size: var(--text-2xl);
    color: var(--accent);
    font-weight: var(--font-semibold);
    line-height: var(--leading-normal);
}

.hero-description {
    font-size: var(--text-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: var(--leading-relaxed);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow:
        0 0 0 0 rgba(99, 102, 241, 0.4),
        0 4px 16px rgba(99, 102, 241, 0.3);
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 0 0 8px rgba(99, 102, 241, 0.15),
        0 12px 32px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-strong);
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
}

.btn-outline:hover {
    background: rgba(248, 250, 252, 0.05);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.btn-sm::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-sm:hover::before {
    left: 100%;
}

.btn-sm:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
    color: white;
}

.btn-sm.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-sm.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.hero-stats {
    display: flex;
    gap: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-subtle);
}

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

.stat-number {
    display: block;
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
}

.hero-card-container {
    position: relative;
    transform-style: preserve-3d;
    animation: float-card 6s ease-in-out infinite;
}

.hero-card {
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    overflow: visible;
    box-shadow: none;
    transform-style: preserve-3d;
    transition: transform 0.8s ease;
    position: relative;
    z-index: 2;
    width: 100%;
    height: 400px;
}

.hero-card:hover {
    transform: rotateY(180deg);
}

.card-side {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    background: var(--bg-secondary);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.card-front {
    transform: rotateY(0deg);
}

.card-back {
    transform: rotateY(180deg);
}

.card-shadow {
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    border-radius: var(--radius-lg);
    opacity: 0.3;
    filter: blur(20px);
    z-index: 1;
    animation: shadow-pulse 4s ease-in-out infinite;
}

@keyframes shadow-pulse {
    0%, 100% { 
        opacity: 0.3; 
        transform: scale(1);
    }
    50% { 
        opacity: 0.5; 
        transform: scale(1.05);
    }
}

@keyframes float-card {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.card-header {
    background: var(--bg-tertiary);
    padding: var(--space-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    font-family: var(--font-mono);
}

.card-dots {
    display: flex;
    gap: var(--space-xs);
}

.card-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--error);
}

.card-dots span:nth-child(2) {
    background: var(--warning);
}

.card-dots span:nth-child(3) {
    background: var(--success);
}

.card-content {
    padding: var(--space-lg);
    height: calc(100% - 60px); /* Subtract header height */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: var(--text-primary);
}

.code-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 0;
}

.graph-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    justify-content: center;
    min-height: 0;
}

.graph-container {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.graph-title {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.chart-container {
    position: relative;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-container canvas {
    max-width: 100%;
    height: auto;
}

.flip-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    animation: pulse-hint 2s ease-in-out infinite;
}

.flip-hint i {
    color: var(--primary);
    font-size: 1rem;
}

.flip-hint:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
    color: var(--text-primary);
    animation: none;
}

@keyframes pulse-hint {
    0%, 100% { 
        opacity: 0.7; 
        transform: scale(1);
    }
    50% { 
        opacity: 1; 
        transform: scale(1.05);
    }
}

.code-block {
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.95rem;
    background: #232347;
    color: #fff;
    border-radius: 1rem;
    margin: 1.5rem 1.25rem 1rem 1.25rem;
    padding: 1.25rem 1rem;
    border: 1.5px solid #6366f1;
    box-shadow: 0 2px 8px 0 rgba(99,102,241,0.08);
    min-height: 460px;
    max-height: 500px;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: hidden;
    overflow-y: hidden;
}

.code-line {
    margin-bottom: var(--space-xs);
}

.code-indent {
    padding-left: var(--space-md);
}

.code-keyword {
    color: #ff6b6b;
}

.code-variable {
    color: #4ecdc4;
}

.code-operator {
    color: #f7f1e3;
}

.code-string {
    color: #a8e6cf;
}

.code-bracket {
    color: var(--text-secondary);
}

.code-comment {
    color: var(--text-muted);
    font-style: italic;
}

.code-function {
    color: var(--accent);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: bounce 2s infinite;
}

.scroll-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border: 2px solid var(--text-secondary);
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
    margin: 0 auto;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Section Styles */
section {
    padding: var(--space-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
    margin-bottom: var(--space-4);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: var(--leading-tight);
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
}

/* About Section */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.about-intro h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
    color: var(--accent);
    font-weight: var(--font-bold);
}

.about-intro p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-8);
}

.about-highlights {
    display: grid;
    gap: var(--space-md);
}

.highlight-card {
    background: var(--bg-tertiary);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.highlight-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.highlight-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    font-size: 1.25rem;
    color: var(--text-primary);
}

.highlight-card h4 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
    color: var(--text-primary);
    font-weight: var(--font-semibold);
}

.highlight-card p {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
}

.about-visual {
    position: relative;
}

.image-container {
    position: relative;
    width: min(420px, 90vw);
    aspect-ratio: 1 / 1;
    margin: 0 auto;
    border-radius: var(--space-8);
    padding: var(--space-2);
    background: var(--gradient-primary);
}

.image-tilt {
    perspective: 1000px;
    transform-style: preserve-3d;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--space-6);
    border: 4px solid var(--bg-primary);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    will-change: transform;
    box-shadow:
        var(--shadow-2xl),
        inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    opacity: 0.3;
    mix-blend-mode: overlay;
}

.tilt-glare {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-xl);
    pointer-events: none;
    background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.25), rgba(255,255,255,0) 60%);
    opacity: 0.0;
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.floating-card {
    position: absolute;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-medium);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    animation: float 4s ease-in-out infinite;
    box-shadow:
        var(--shadow-lg),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.floating-card i {
    color: var(--primary);
    font-size: var(--text-lg);
}

.card-1 {
    top: 10%;
    right: -20%;
    animation-delay: 0s;
}

.card-2 {
    bottom: 10%;
    left: -20%;
    animation-delay: 2s;
}

/* Journey Section */
.journey {
    background: var(--bg-primary);
}

.journey-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.journey-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-primary);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.5);
    transform: translateX(-50%);
}

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

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
    margin-right: 50%;
    text-align: right;
    padding-right: var(--space-xl);
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 50%;
    margin-right: 0;
    text-align: left;
    padding-left: var(--space-xl);
}

.timeline-marker {
    z-index: 10;
    position: relative;
}

.marker-dot {
    position: relative;
    width: 80px;
    height: 80px;
    background: var(--bg-elevated);
    border: 4px solid var(--primary);
    border-radius: 50%;
    margin: 0 auto -36px auto;
    z-index: 11;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow:
        0 0 0 8px var(--bg-primary),
        0 4px 16px rgba(99, 102, 241, 0.4);
}

.marker-dot img.journey-logo {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 72px;
    height: 72px;
    border-radius: 0;
    background: transparent;
    border: none;
    padding: var(--space-2);
    object-fit: contain;
    z-index: 12;
}

.marker-dot img.journey-logo + * {
    display: none;
}

.marker-line {
    width: 2px;
    height: 100px;
    background: var(--gradient-primary);
    margin: 0 auto;
    margin-top: var(--space-sm);
}

.timeline-content {
    z-index: 1;
    position: relative;
    background: var(--bg-secondary);
    padding: var(--space-8);
    margin-top: 0;
    border-radius: var(--space-4);
    border: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.timeline-content:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow-primary);
}

.timeline-header h3 {
    font-size: var(--text-xl);
    color: var(--primary);
    margin-bottom: var(--space-2);
    font-weight: var(--font-bold);
}

.timeline-company {
    display: block;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.timeline-date {
    display: block;
    font-size: var(--text-sm);
    color: var(--accent);
    margin-bottom: var(--space-4);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timeline-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.timeline-achievements {
    list-style: none;
}

.timeline-achievements li {
    padding: var(--space-2) 0;
    position: relative;
    padding-left: var(--space-6);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.timeline-achievements li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: var(--text-lg);
    font-weight: bold;
}

/* Work Section */
.work {
    background: var(--bg-secondary);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
}

.work-card {
    background: var(--bg-secondary);
    border-radius: var(--space-4);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    min-height: 440px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    box-shadow: var(--shadow-sm);
}

.work-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow:
        var(--shadow-xl),
        var(--shadow-glow-primary);
}

.work-card.featured {
    grid-column: 1 / -1;
    background: var(--bg-elevated);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-md), var(--shadow-glow-primary);
}

/* AI Project Enhanced Styling */
.work-card.ai-project {
    position: relative;
    background: linear-gradient(135deg, var(--bg-elevated) 0%, rgba(255, 153, 0, 0.05) 100%);
    border: 2px solid transparent;
    background-image:
        linear-gradient(var(--bg-elevated), var(--bg-elevated)),
        linear-gradient(135deg, #FF9900 0%, #FF6B00 50%, var(--primary) 100%);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow:
        var(--shadow-md),
        0 0 40px rgba(255, 153, 0, 0.3),
        0 0 80px rgba(99, 102, 241, 0.2);
    animation: ai-border-pulse 3s ease-in-out infinite;
}

@keyframes ai-border-pulse {
    0%, 100% {
        box-shadow:
            var(--shadow-md),
            0 0 40px rgba(255, 153, 0, 0.3),
            0 0 80px rgba(99, 102, 241, 0.2);
    }
    50% {
        box-shadow:
            var(--shadow-md),
            0 0 60px rgba(255, 153, 0, 0.5),
            0 0 100px rgba(99, 102, 241, 0.3);
    }
}

.work-card.ai-project .card-image {
    background: linear-gradient(135deg, #FF9900 0%, #FF6B00 50%, var(--primary) 100%);
}

/* Multiple badges container */
.card-badges {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    margin-bottom: var(--space-4);
    margin-top: var(--space-1);
}

.card-badge.latest {
    background: linear-gradient(135deg, #FF9900 0%, #FF6B00 100%);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(255, 153, 0, 0.4);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 153, 0, 0.8);
    }
}

/* AWS Tech Badges */
.card-tech span.aws-tech {
    background: linear-gradient(135deg, rgba(255, 153, 0, 0.2) 0%, rgba(255, 153, 0, 0.1) 100%);
    border: 1px solid rgba(255, 153, 0, 0.4);
    color: #FF9900;
    font-weight: var(--font-semibold);
}

.card-image {
    height: 200px;
    background: var(--gradient-primary);
    position: relative;
    border-radius: var(--space-3);
    overflow: hidden;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 30, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-primary);
}

.image-overlay i {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.card-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
}

.card-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--text-primary);
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    border-radius: var(--space-2);
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-4);
    margin-top: var(--space-1);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    box-shadow: var(--shadow-md);
}

.card-content h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    font-weight: var(--font-semibold);
    line-height: var(--leading-snug);
}

.card-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    line-height: var(--leading-relaxed);
    font-size: var(--text-base);
}

.card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.card-tech span {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.card-actions {
    margin-top: 1.2rem;
    display: flex;
    gap: 0.7rem;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
    width: 100%;
}

/* Skills Section */
.skills {
    background: var(--bg-primary);
}

.skills-container {
    display: grid;
    gap: var(--space-2xl);
}

.skills-category h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    color: var(--accent);
    text-align: center;
}

.skills-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1.2rem;
    margin-top: 2rem;
    justify-content: center;
    text-align: center;
}

.skill-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--space-4);
    padding: var(--space-6) var(--space-4);
    box-shadow: var(--shadow-sm);
    color: var(--text-primary);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-card:hover {
    transform: translateY(-8px) scale(1.03);
    border-color: var(--primary);
    box-shadow:
        var(--shadow-lg),
        0 0 32px rgba(99, 102, 241, 0.3);
}

.skill-card:hover .skill-logo {
    transform: scale(1.15) rotateY(8deg);
    box-shadow:
        0 0 0 4px rgba(99, 102, 241, 0.2),
        var(--shadow-lg);
}

.skill-item {
    background: var(--bg-secondary);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.skill-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
}

.skill-level {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 500;
}

.skill-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    width: 0;
    transition: width 1.5s ease;
}

/* Certifications Section */
.certifications {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.certification-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--space-4);
    padding: var(--space-8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.certification-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.certification-card:hover::before {
    opacity: 0.05;
}

.certification-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow:
        var(--shadow-xl),
        var(--shadow-glow-primary);
}

.certification-card.featured {
    background: var(--bg-elevated);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-md), var(--shadow-glow-primary);
}

.certification-card.featured::before {
    background: var(--gradient-primary);
}

.cert-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.certification-card.featured .cert-icon {
    background: var(--gradient-secondary);
}

.cert-icon i {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.cert-content {
    position: relative;
    z-index: 1;
}

.cert-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.cert-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.5;
}

.cert-date {
    display: inline-block;
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.certification-card.featured .cert-date {
    background: rgba(6, 182, 212, 0.2);
    color: var(--accent);
}

.cert-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    position: relative;
    z-index: 1;
}

.cert-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-sm);
    color: var(--primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.cert-link:hover {
    background: var(--primary);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.certification-card.featured .cert-link {
    background: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.3);
    color: var(--accent);
}

.certification-card.featured .cert-link:hover {
    background: var(--accent);
    color: var(--text-primary);
}

.cert-link i {
    font-size: 0.75rem;
}

/* Contact Section */
.contact {
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-intro h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--accent);
}

.contact-intro p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.contact-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.contact-text h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.contact-text a,
.contact-text span {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.contact-form-container {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-xl);
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: #a1a1aa;
    font-size: 1rem;
    pointer-events: none;
    background: transparent;
    transition: all 0.22s cubic-bezier(.4,2,.6,1);
    z-index: 2;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -0.7rem;
    left: 0.8rem;
    font-size: 0.88rem;
    color: var(--primary, #6366f1);
    background: #181830;
    padding: 0 0.3em;
    border-radius: 0.4em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--border-subtle);
    border-radius: var(--space-3);
    background: rgba(26, 26, 56, 0.6);
    backdrop-filter: blur(8px);
    color: var(--text-primary);
    font-size: var(--text-base);
    transition: all 0.2s ease;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: rgba(32, 32, 68, 0.8);
    box-shadow:
        0 0 0 4px rgba(99, 102, 241, 0.12),
        var(--shadow-md);
}

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

/* Form Status Messages */
.form-status {
    margin-top: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--space-2);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    text-align: center;
    transition: all 0.3s ease;
    display: none;
}

.form-status.success {
    background: var(--success-bg);
    border: 1px solid var(--success);
    color: var(--success);
}

.form-status.error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid var(--error);
    color: var(--error);
}

/* Button Loading State */
.btn-primary.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
}

.btn-primary.loading #btnText {
    opacity: 0;
}

.btn-primary:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

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

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xl) 0;
    margin-bottom: var(--space-lg);
}

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding: var(--space-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 1rem;
    }
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    /* Typography adjustments */
    .title-name {
        font-size: var(--text-4xl);
    }

    .title-role {
        font-size: var(--text-xl);
    }

    .section-title {
        font-size: var(--text-3xl);
        text-align: center;
    }

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

    /* Guardrails: keep sections within viewport */
    section, .container {
        max-width: 100vw;
        overflow-x: hidden;
    }

    .container {
        padding: 0 var(--space-4);
    }

    /* Hero section */
    .hero {
        overflow: visible;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        padding: var(--space-8) var(--space-4);
    }

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

    .hero-title, .hero-description {
        text-align: center;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 400px;
        margin: 0 auto var(--space-8);
    }

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

    /* Flip card - smaller but still functional */
    .flip-card {
        width: 100%;
        max-width: 380px;
        height: 480px;
        margin: 0 auto;
    }

    .code-block {
        font-size: var(--text-xs);
        padding: var(--space-3);
        min-height: 320px;
    }

    /* Stats */
    .hero-stats {
        flex-direction: column;
        gap: var(--space-6);
        align-items: center;
    }

    .stat-number {
        font-size: var(--text-3xl);
    }

    /* About section */
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .about-intro h3,
    .about-intro p {
        text-align: center;
    }

    .image-container {
        width: min(320px, 85vw);
    }

    /* Remove floating cards on mobile */
    .floating-card {
        position: static;
        display: inline-flex;
        margin: var(--space-2);
        animation: none;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    /* Journey timeline - keep vertical line on mobile */
    .journey-timeline::before {
        left: 24px;
        display: block;
    }

    .timeline-marker {
        display: block;
        margin-left: 0;
    }

    .marker-dot {
        width: 48px;
        height: 48px;
        margin-left: 0;
        margin-bottom: var(--space-4);
    }

    .marker-dot img.journey-logo {
        width: 40px;
        height: 40px;
    }

    .timeline-item .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 72px;
        margin-right: 0;
        padding: var(--space-6);
        text-align: left;
    }

    /* Cards */
    .work-grid,
    .visualizations-grid,
    .certifications-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .highlight-card,
    .work-card,
    .viz-card,
    .certification-card {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        margin: 0;
    }

    /* Skills grid - 2 columns on mobile */
    .skills-card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    .skill-logo {
        width: 56px;
        height: 56px;
    }

    /* Contact */
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .contact-form {
        width: 100%;
    }

    .form-group input, .form-group textarea {
        font-size: var(--text-base);
        padding: var(--space-4);
    }

    /* Navigation */
    .nav-menu {
        flex-direction: column;
        gap: var(--space-6);
        background: rgba(15, 15, 35, 0.98);
        backdrop-filter: blur(16px);
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        height: calc(100vh - 80px);
        overflow-y: auto;
        z-index: 1001;
        display: none;
        padding: var(--space-xl) var(--space-lg);
    }

    .nav-menu .nav-item {
        text-align: center;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: var(--space-6);
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-3);
        align-items: center;
    }

    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    /* Ultra-mobile adjustments */
    .title-name {
        font-size: var(--text-3xl);
        word-break: break-word;
    }

    .title-role {
        font-size: var(--text-lg);
        word-break: break-word;
    }

    .section-title {
        font-size: var(--text-2xl);
    }

    .container {
        padding: 0 var(--space-3);
    }

    .flip-card {
        height: 420px;
    }

    .skills-card-grid {
        grid-template-columns: 1fr;
    }

    .btn {
        font-size: var(--text-base);
        padding: var(--space-3);
    }

    .form-group input, .form-group textarea {
        font-size: var(--text-base);
        padding: var(--space-3);
    }

    .footer-logo {
        font-size: var(--text-xl);
    }

    .hero-actions {
        flex-direction: column;
        gap: var(--space-3);
        align-items: stretch;
    }

    .btn {
        width: 100%;
        min-width: 0;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* Slightly reduce paddings to fit narrow screens */
    .section-header {
        padding: 0 var(--space-2);
    }

    .card-content {
        padding: var(--space-4);
    }
}

body {
    overflow-x: hidden;
}

/* Accessibility Enhancements */

/* Focus indicators for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--space-1);
}

.nav-link:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
}

.btn:focus-visible {
    box-shadow:
        0 0 0 4px rgba(99, 102, 241, 0.3),
        var(--shadow-lg);
}

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: var(--space-4) var(--space-6);
    border-radius: var(--space-2);
    font-weight: var(--font-semibold);
    z-index: 10002;
    transition: top 0.3s ease;
    text-decoration: none;
}

.skip-to-content:focus {
    top: var(--space-4);
}

/* Respect reduced motion preference */
@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;
    }

    .flip-card:hover .flip-card-inner {
        transform: none;
    }

    .cursor-follower {
        display: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-subtle: rgba(255, 255, 255, 0.3);
        --border-medium: rgba(255, 255, 255, 0.5);
        --text-secondary: #e2e8f0;
    }

    .btn-outline {
        border-width: 3px;
    }
}

/* Custom cursor - make it optional for users who prefer normal cursor */
@media (prefers-reduced-motion: no-preference) {
    body:not(.disable-custom-cursor) {
        cursor: none;
    }

    body:not(.disable-custom-cursor) .cursor-follower {
        display: block;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.work-card.featured {
    grid-column: 1 / -1;
}

.certifications-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

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

/* Visualizations Section */
.visualizations {
    padding: var(--space-2xl) 0;
    background: var(--bg-primary);
}

.visualizations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.viz-card {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.viz-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.viz-card:hover::before {
    opacity: 0.05;
}

.viz-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.viz-card.featured {
    border-color: var(--accent);
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, rgba(6, 182, 212, 0.1) 100%);
}

.viz-card.featured::before {
    background: var(--gradient-secondary);
}

.viz-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.viz-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.viz-card.featured .viz-icon {
    background: var(--gradient-accent);
}

.viz-icon i {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.viz-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.viz-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 0 0 0 var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.viz-content {
    position: relative;
    z-index: 1;
}

.viz-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.5;
}

.viz-tech {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.viz-tech span {
    background: rgba(6, 182, 212, 0.2);
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.viz-actions {
    position: relative;
    z-index: 1;
}

.cert-badge-container {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.cert-badge-image {
    flex-shrink: 0;
}

.badge-img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    background: white;
    padding: 8px;
}

.badge-img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.certification-card.featured .badge-img {
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.certification-card.featured .badge-img:hover {
    box-shadow: 0 8px 25px rgba(6, 182, 212, 0.4);
}

/* Responsive adjustments for badge */
@media (max-width: 768px) {
    .cert-badge-container {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
    
    .badge-img {
        width: 70px;
        height: 70px;
    }
}

@media (max-width: 480px) {
    .badge-img {
        width: 60px;
        height: 60px;
    }
}

.flip-card {
    background: transparent;
    width: 420px;
    max-width: 98vw;
    height: 600px;
    perspective: 1200px;
    margin: 0 auto;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(.4,2,.6,1);
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner,
.flip-card:focus-within .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: var(--bg-secondary, #181830);
    color: var(--text-primary, #fff);
    border-radius: var(--radius-lg, 1.5rem);
    box-shadow: 0 10px 30px 0 rgba(0,0,0,0.25);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    backface-visibility: hidden;
    overflow: hidden;
    border: 1.5px solid #6366f1;
}

.flip-card-front {
    z-index: 2;
}

.flip-card-back {
    transform: rotateY(180deg);
    z-index: 3;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-tertiary, #232347);
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.card-dots span {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 3px;
    background: #ef4444;
}
.card-dots span:nth-child(2) { background: #f59e0b; }
.card-dots span:nth-child(3) { background: #10b981; }

.card-title {
    font-size: 0.95rem;
    color: var(--text-secondary, #a1a1aa);
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-weight: 600;
}

.code-block {
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.95rem;
    background: #232347;
    color: #fff;
    border-radius: 1rem;
    margin: 1.5rem 1.25rem 1rem 1.25rem;
    padding: 1.25rem 1rem;
    border: 1.5px solid #6366f1;
    box-shadow: 0 2px 8px 0 rgba(99,102,241,0.08);
    min-height: 460px;
    max-height: 500px;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: hidden;
    overflow-y: hidden;
}

.chart-placeholder {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 1.5rem 0 0.5rem 0;
}
.chart-inner {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
}
.chart-placeholder svg {
    width: 320px;
    max-width: 95vw;
    height: 160px;
    display: block;
    margin: 0 auto;
}
.chart-label {
    margin-top: 1.1rem;
    color: #a1a1aa;
    font-size: 1rem;
    text-align: center;
    font-weight: 500;
}
.chart-point {
    cursor: pointer;
    transition: r 0.2s, fill 0.2s;
}
.chart-point:hover {
    r: 11;
    fill: #8b5cf6;
}
.chart-tooltip {
    position: absolute;
    pointer-events: none;
    background: #232347;
    color: #fff;
    padding: 0.4em 0.8em;
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-mono, monospace);
    box-shadow: 0 2px 8px 0 rgba(99,102,241,0.18);
    z-index: 10;
    white-space: nowrap;
    border: 1.5px solid #6366f1;
    opacity: 0.95;
}

@media (max-width: 600px) {
    .flip-card {
        width: 98vw;
        height: 480px;
        min-width: 0;
    }
    .code-block {
        font-size: 0.85rem;
        padding: 0.75rem 0.5rem;
        margin: 1rem 0.5rem 0.5rem 0.5rem;
        min-height: 300px;
        max-height: 340px;
    }
    .chart-placeholder {
        padding: 1rem 0.25rem 0.5rem 0.25rem;
    }
}

.loading-bar-container {
    width: 100%;
    max-width: 340px;
    margin: 1rem auto 0.8rem auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
}

.loading-label {
    color: #a1a1aa;
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
    letter-spacing: 0.03em;
}

.loading-bar {
    width: 100%;
    min-width: 180px;
    max-width: 320px;
    height: 8px;
    background: #232347;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.loading-bar::after {
    content: '';
    display: block;
    height: 100%;
    width: 40%;
    background: linear-gradient(90deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 8px;
    position: absolute;
    left: -40%;
    top: 0;
    animation: loading-bar-bounce 1.6s cubic-bezier(.4,2,.6,1) infinite;
}

@keyframes loading-bar-bounce {
    0% { left: -40%; }
    50% { left: 100%; }
    100% { left: -40%; }
}

.journey-logo {
    height: 28px;
    width: auto;
    vertical-align: middle;
    margin-right: 0.5em;
    border-radius: 6px;
    box-shadow: 0 1px 4px 0 rgba(0,0,0,0.08);
    background: #fff;
    object-fit: contain;
}

.btn-sm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1.1rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.7rem;
    background: var(--primary, #6366f1);
    color: #fff;
    border: none;
    text-decoration: none;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px 0 rgba(99,102,241,0.10);
    cursor: pointer;
    min-width: 120px;
}
.btn-sm:hover,
.btn-sm:focus {
    background: var(--secondary, #8b5cf6);
    color: #fff;
    text-decoration: none;
}

.skill-logo {
    display: block;
    width: 72px;
    height: 72px;
    margin-bottom: var(--space-4);
    object-fit: contain;
    object-position: center;
    border-radius: var(--space-3);
    background: white;
    padding: var(--space-3);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-logo-large {
    width: 84px;
    height: 84px;
    padding: 8px;
} 

/* --- Mobile Responsiveness Enhancements --- */
@media (max-width: 768px) {
    /* Improve mobile nav panel usability */
    .nav-menu {
        padding: var(--space-xl) var(--space-lg);
        height: calc(100vh - 80px);
        overflow-y: auto;
        background: rgba(15, 15, 35, 0.98);
        backdrop-filter: blur(16px);
    }
    .nav-menu .nav-item {
        text-align: center;
    }

    /* Stack floating cards below avatar to avoid overflow */
    .about-visual .about-image {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
    }
    .floating-card {
        position: static;
        animation: none;
    }

    /* Simplify journey timeline into a single-column list */
    .journey-timeline::before {
        display: none;
    }
    .timeline-marker {
        display: none;
    }
    .timeline-item .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin: 0;
        text-align: left;
        padding: var(--space-lg);
    }
}

@media (max-width: 480px) {
    /* Slightly reduce paddings to fit narrow screens */
    .section-header { padding: 0 var(--space-sm); }
    .card-content { padding: var(--space-md); }
}