/* ==========================================================================
   Göktürk Gök - Personal Website Styles
   ========================================================================== */

/* CSS Variables */
:root {
    /* Colors - Deep space theme with warm accents */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #15151f;
    
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --accent-primary: #f59e0b;
    --accent-secondary: #fbbf24;
    --accent-glow: rgba(245, 158, 11, 0.15);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    /* Code colors */
    --code-bg: #0d1117;
    --code-keyword: #ff7b72;
    --code-class: #79c0ff;
    --code-string: #a5d6ff;
    --code-number: #79c0ff;
    --code-method: #d2a8ff;
    --code-comment: #8b949e;
    --code-type: #ffa657;
    
    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
    
    /* Spacing */
    --section-padding: clamp(4rem, 10vw, 8rem);
    --container-max: 1200px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Animation Easings */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-in-out-quart: cubic-bezier(0.76, 0, 0.24, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-display);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background Effects */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(245, 158, 11, 0.08), transparent),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(251, 191, 36, 0.05), transparent);
    pointer-events: none;
    z-index: 0;
}

/* Aurora Mesh Gradient Background */
.bg-orb {
    position: fixed;
    pointer-events: none;
    z-index: 0;
}

.bg-orb-1 {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 50% 80% at 20% 40%, rgba(245, 158, 11, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(251, 191, 36, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 40% 60% at 70% 80%, rgba(245, 158, 11, 0.06) 0%, transparent 50%);
    animation: auroraPulse 12s ease-in-out infinite;
}

.bg-orb-2 {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 40% at 50% 0%, rgba(245, 158, 11, 0.1) 0%, transparent 60%),
        radial-gradient(ellipse 50% 50% at 90% 60%, rgba(217, 119, 6, 0.08) 0%, transparent 50%);
    animation: auroraDrift 18s ease-in-out infinite reverse;
}

/* Noise overlay for texture */
.bg-orb-1::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    mix-blend-mode: overlay;
}

/* Flowing light beam */
.bg-orb-2::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        from 0deg at 50% 50%,
        transparent 0deg,
        rgba(245, 158, 11, 0.03) 60deg,
        transparent 120deg,
        rgba(251, 191, 36, 0.02) 180deg,
        transparent 240deg,
        rgba(217, 119, 6, 0.03) 300deg,
        transparent 360deg
    );
    animation: beamRotate 30s linear infinite;
}

@keyframes auroraPulse {
    0%, 100% { 
        opacity: 1;
        filter: blur(0px);
    }
    25% { 
        opacity: 0.8;
        filter: blur(10px);
    }
    50% { 
        opacity: 1;
        filter: blur(0px);
    }
    75% { 
        opacity: 0.9;
        filter: blur(5px);
    }
}

@keyframes auroraDrift {
    0%, 100% { 
        transform: translateX(0) translateY(0) scale(1);
    }
    33% { 
        transform: translateX(3%) translateY(-2%) scale(1.02);
    }
    66% { 
        transform: translateX(-2%) translateY(3%) scale(0.98);
    }
}

@keyframes beamRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Accent glow spots */
.bg-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    mix-blend-mode: screen;
}

.bg-glow-1 {
    top: 10%;
    right: 15%;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
    filter: blur(60px);
    animation: glowPulse1 8s ease-in-out infinite;
}

.bg-glow-2 {
    bottom: 30%;
    left: 10%;
    background: radial-gradient(circle, rgba(251, 191, 36, 0.1) 0%, transparent 70%);
    filter: blur(80px);
    animation: glowPulse2 10s ease-in-out infinite 2s;
}

.bg-glow-3 {
    top: 60%;
    right: 5%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(217, 119, 6, 0.12) 0%, transparent 70%);
    filter: blur(50px);
    animation: glowPulse3 12s ease-in-out infinite 4s;
}

@keyframes glowPulse1 {
    0%, 100% { 
        opacity: 0.6;
        transform: scale(1) translate(0, 0);
    }
    50% { 
        opacity: 1;
        transform: scale(1.2) translate(-20px, 10px);
    }
}

@keyframes glowPulse2 {
    0%, 100% { 
        opacity: 0.5;
        transform: scale(1) translate(0, 0);
    }
    50% { 
        opacity: 0.9;
        transform: scale(1.3) translate(30px, -20px);
    }
}

@keyframes glowPulse3 {
    0%, 100% { 
        opacity: 0.4;
        transform: scale(1);
    }
    50% { 
        opacity: 0.8;
        transform: scale(1.15);
    }
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.25rem 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: var(--transition-fast);
}

.nav-logo:hover {
    color: var(--accent-secondary);
    text-shadow: 0 0 20px var(--accent-glow);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: var(--transition-base);
}

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

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: calc(80px + 4rem) 2rem 4rem;
    max-width: var(--container-max);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-content {
    /* Staggered children animation */
}

/* Hero staggered animations */
.hero-tag {
    opacity: 0;
    transform: translateY(20px);
    animation: revealUp 0.8s var(--ease-out-expo) forwards;
    animation-delay: 0.1s;
}

.hero-title .title-line:first-child {
    opacity: 0;
    transform: translateY(40px);
    animation: revealUp 0.9s var(--ease-out-expo) forwards;
    animation-delay: 0.2s;
}

.hero-title .title-line:last-child {
    opacity: 0;
    transform: translateY(40px);
    animation: revealUp 0.9s var(--ease-out-expo) forwards;
    animation-delay: 0.35s;
}

.hero-subtitle {
    opacity: 0;
    transform: translateY(30px);
    animation: revealUp 0.8s var(--ease-out-expo) forwards;
    animation-delay: 0.5s;
}

.hero-cta {
    opacity: 0;
    transform: translateY(25px);
    animation: revealUp 0.8s var(--ease-out-expo) forwards;
    animation-delay: 0.65s;
}

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

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    letter-spacing: 0.02em;
}

.tag-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.title-accent {
    color: var(--accent-primary);
    text-shadow: 0 0 60px var(--accent-glow);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 480px;
    margin-bottom: 2.5rem;
}

.hero-highlight {
    color: var(--accent-primary);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s var(--ease-out-expo), height 0.6s var(--ease-out-expo);
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-3px);
    box-shadow: 
        0 10px 30px rgba(245, 158, 11, 0.3),
        0 0 0 0 rgba(245, 158, 11, 0.4);
    animation: btnPulse 0.6s ease-out;
}

@keyframes btnPulse {
    0% { box-shadow: 0 10px 30px rgba(245, 158, 11, 0.3), 0 0 0 0 rgba(245, 158, 11, 0.4); }
    100% { box-shadow: 0 10px 30px rgba(245, 158, 11, 0.3), 0 0 0 15px rgba(245, 158, 11, 0); }
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(245, 158, 11, 0.1), transparent);
    transition: left 0.5s var(--ease-out-quart);
}

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

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

/* Hero Visual - Code Block */
.hero-visual {
    opacity: 0;
    transform: translateY(40px) rotate(1deg);
    animation: revealCode 1s var(--ease-out-expo) forwards;
    animation-delay: 0.4s;
}

@keyframes revealCode {
    to {
        opacity: 1;
        transform: translateY(0) rotate(0deg);
    }
}

.code-block {
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    animation: codeFloat 6s ease-in-out infinite;
    animation-delay: 1.5s;
    transition: transform 0.4s var(--ease-out-quart), box-shadow 0.4s var(--ease-out-quart);
}

.code-block:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.08),
        0 0 80px rgba(245, 158, 11, 0.08);
}

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

.code-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot.red { background: #ff5f56; }
.code-dot.yellow { background: #ffbd2e; }
.code-dot.green { background: #27c93f; }

.code-title {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.code-content {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    overflow-x: auto;
}

.code-content code {
    display: block;
}

.code-keyword { color: var(--code-keyword); }
.code-class { color: var(--code-class); }
.code-string { color: var(--code-string); }
.code-number { color: var(--code-number); }
.code-method { color: var(--code-method); }
.code-comment { color: var(--code-comment); font-style: italic; }
.code-type { color: var(--code-type); }

/* Sections */
.section {
    padding: var(--section-padding) 0;
    position: relative;
    z-index: 1;
}

.section-header {
    margin-bottom: 3rem;
}

.section-number {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-primary);
    margin-bottom: 0.75rem;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text {
    max-width: 640px;
}

.about-lead {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

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

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.stat-card {
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-align: center;
    transition: all 0.4s var(--ease-out-quart);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    transform: scaleX(0);
    transition: transform 0.4s var(--ease-out-quart);
}

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

.stat-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* Journey Section */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 0;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
    animation: drawLine 1.5s var(--ease-out-expo) forwards;
    animation-delay: 0.5s;
}

@keyframes drawLine {
    to { height: 100%; }
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
    padding-left: 2rem;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0;
    width: 12px;
    height: 12px;
    background: var(--accent-primary);
    border-radius: 50%;
    transform: translateX(-5px);
    box-shadow: 0 0 20px var(--accent-glow);
}

.timeline-item:first-child .timeline-marker {
    animation: markerPulse 2s ease-in-out infinite;
}

@keyframes markerPulse {
    0%, 100% { 
        box-shadow: 0 0 20px var(--accent-glow), 0 0 0 0 rgba(245, 158, 11, 0.4);
    }
    50% { 
        box-shadow: 0 0 25px var(--accent-glow), 0 0 0 8px rgba(245, 158, 11, 0);
    }
}

.timeline-content {
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--border-hover);
    transform: translateX(8px);
}

.timeline-period {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-primary);
    background: var(--accent-glow);
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    margin-bottom: 0.75rem;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.timeline-domain {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.timeline-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Expertise Section */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.expertise-card {
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.4s var(--ease-out-quart);
    position: relative;
    overflow: hidden;
}

.expertise-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(245, 158, 11, 0.08) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.expertise-card:hover::after {
    opacity: 1;
}

.expertise-card:hover {
    border-color: rgba(245, 158, 11, 0.5);
    transform: translateY(-6px) scale(1.01);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(245, 158, 11, 0.1);
}

.expertise-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.25rem;
    color: var(--accent-primary);
}

.expertise-icon svg {
    width: 100%;
    height: 100%;
}

.expertise-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.expertise-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact Section */
.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all 0.3s var(--ease-out-quart);
    position: relative;
    overflow: hidden;
}

.contact-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s var(--ease-out-quart);
}

.contact-link:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.contact-link:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.contact-link svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s var(--ease-out-quart);
}

.contact-link:hover svg {
    transform: scale(1.15);
}

/* Footer */
.footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.footer p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.footer strong {
    color: var(--text-secondary);
}

.footer-year {
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Animations */
.section {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth text selection */
::selection {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

/* Link underline animation */
.nav-links a::after {
    transition: width 0.4s var(--ease-out-expo);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 3rem;
        min-height: auto;
        padding-top: calc(80px + 3rem);
        padding-bottom: 3rem;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .stat-card {
        flex: 1;
        min-width: 140px;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: calc(80px + 2rem) 1.5rem 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .about-stats {
        flex-direction: column;
    }
    
    .stat-card {
        width: 100%;
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    .contact-links {
        flex-direction: column;
    }
    
    .contact-link {
        justify-content: center;
    }
    
    .code-content {
        font-size: 0.75rem;
        padding: 1rem;
    }
}

/* Selection */
::selection {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}