/* =====================================================
   SARVAJEETH UK - PORTFOLIO WEBSITE
   Design System: Neural Flow (Dark Theme)
   ===================================================== */

/* =====================================================
   CSS VARIABLES / DESIGN TOKENS
   ===================================================== */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(18, 18, 26, 0.8);
    
    --accent-primary: #00d4ff;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #06ffa5;
    --accent-warning: #fbbf24;
    
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --gradient-primary: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --gradient-secondary: linear-gradient(135deg, var(--accent-secondary), var(--accent-tertiary));
    --gradient-glow: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(139, 92, 246, 0.15));
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 2rem;
    --fs-4xl: 2.5rem;
    --fs-5xl: 3.5rem;
    --fs-6xl: 4.5rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Effects */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
    
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Layout */
    --container-max: 1200px;
    --navbar-height: 80px;
}

/* =====================================================
   RESET & BASE STYLES
   ===================================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
}

body {
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    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;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: var(--radius-full);
}

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

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

/* Links */
a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-secondary);
}

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

/* Lists */
ul, ol {
    list-style: none;
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-24) 0;
    position: relative;
}

.highlight {
    color: var(--accent-primary);
    font-weight: 500;
}

/* =====================================================
   LOADER
   ===================================================== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.loader-text {
    font-family: var(--font-mono);
    font-size: var(--fs-2xl);
    margin-bottom: var(--space-6);
}

.loader-bracket {
    color: var(--accent-secondary);
}

.loader-name {
    color: var(--accent-primary);
    animation: pulse 1.5s ease-in-out infinite;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.loader-progress {
    height: 100%;
    background: var(--gradient-primary);
    animation: loader-progress 1.5s ease-in-out forwards;
}

@keyframes loader-progress {
    0% { width: 0%; }
    100% { width: 100%; }
}

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

/* =====================================================
   NAVIGATION
   ===================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    height: 70px;
    background: rgba(10, 10, 15, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: var(--container-max);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: var(--fs-xl);
    font-weight: 600;
    display: flex;
    gap: 2px;
}

.logo-bracket {
    color: var(--accent-secondary);
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: var(--space-2) 0;
    transition: color var(--transition-fast);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--accent-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: transform var(--transition-base);
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

.menu-toggle.active .hamburger {
    background: transparent;
}

.menu-toggle.active .hamburger::before {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active .hamburger::after {
    transform: translateY(-8px) rotate(-45deg);
}

/* =====================================================
   HERO SECTION
   ===================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.neural-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.6;
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: var(--space-8);
}

.hero-greeting {
    margin-bottom: var(--space-4);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.5s;
}

.greeting-text {
    font-family: var(--font-mono);
    font-size: var(--fs-lg);
    color: var(--accent-primary);
}

.hero-name {
    font-size: var(--fs-6xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.7s;
}

.hero-title {
    font-size: var(--fs-2xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.9s;
}

.title-prefix {
    color: var(--text-secondary);
}

.typed-text {
    color: var(--accent-secondary);
    font-weight: 600;
}

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

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

.hero-description {
    max-width: 600px;
    margin: 0 auto var(--space-8);
    font-size: var(--fs-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1.1s;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-10);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1.3s;
}

.hero-socials {
    display: flex;
    gap: var(--space-5);
    justify-content: center;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1.5s;
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.social-link:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    opacity: 0;
    animation: fadeIn 1s ease forwards, bounce 2s ease-in-out infinite;
    animation-delay: 2s, 2.5s;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s ease-in-out infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 24px; }
}

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

.scroll-indicator span {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--fs-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
    color: var(--accent-primary);
}

.btn-outline {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
    padding: var(--space-4) var(--space-8);
}

.btn-outline:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
    color: var(--accent-primary);
}

.btn-large {
    padding: var(--space-4) var(--space-10);
    font-size: var(--fs-base);
}

/* =====================================================
   SECTION TITLES
   ===================================================== */
.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--fs-3xl);
    font-weight: 700;
    margin-bottom: var(--space-12);
}

.section-title.center {
    justify-content: center;
    flex-wrap: wrap;
}

.title-number {
    font-family: var(--font-mono);
    font-size: var(--fs-xl);
    color: var(--accent-primary);
    font-weight: 500;
}

.title-line {
    flex: 1;
    max-width: 300px;
    height: 1px;
    background: linear-gradient(90deg, rgba(255,255,255,0.2), transparent);
}

/* =====================================================
   ABOUT SECTION
   ===================================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-16);
    align-items: start;
}

.about-image-container {
    position: relative;
}

.about-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.about-image {
    width: 100%;
    border-radius: var(--radius-xl);
    filter: grayscale(20%);
    transition: filter var(--transition-base);
}

.about-image-wrapper:hover .about-image {
    filter: grayscale(0%);
}

.image-border {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-xl);
    z-index: -1;
    transition: all var(--transition-base);
}

.about-image-wrapper:hover .image-border {
    top: 15px;
    left: 15px;
}

.about-text p {
    font-size: var(--fs-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-10);
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.stat-number {
    display: block;
    font-size: var(--fs-3xl);
    font-weight: 800;
    color: var(--accent-primary);
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--fs-sm);
    color: var(--text-muted);
}

/* =====================================================
   EXPERIENCE SECTION
   ===================================================== */
.experience {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    padding-left: var(--space-10);
}

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

.timeline-item {
    position: relative;
    margin-bottom: var(--space-10);
}

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

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--space-10) - 6px);
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--bg-secondary);
    border: 3px solid var(--accent-primary);
    border-radius: var(--radius-full);
    z-index: 1;
    transition: all var(--transition-base);
}

.timeline-item:hover .timeline-marker {
    background: var(--accent-primary);
    box-shadow: 0 0 20px var(--accent-primary);
}

.timeline-content {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateX(5px);
}

.timeline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.timeline-title {
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.timeline-company {
    font-size: var(--fs-sm);
    color: var(--accent-primary);
    font-weight: 500;
}

.timeline-date {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

.timeline-points {
    margin-bottom: var(--space-4);
}

.timeline-points li {
    position: relative;
    padding-left: var(--space-5);
    margin-bottom: var(--space-3);
    color: var(--text-secondary);
    font-size: var(--fs-sm);
    line-height: 1.7;
}

.timeline-points li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--accent-tertiary);
    background: rgba(6, 255, 165, 0.1);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
}

/* =====================================================
   PROJECTS SECTION
   ===================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

.project-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.project-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.project-card.featured {
    grid-column: span 2;
}

.project-image {
    position: relative;
    height: 180px;
    background: var(--gradient-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent, var(--bg-secondary));
}

.project-icon {
    position: relative;
    z-index: 1;
    color: var(--accent-primary);
    opacity: 0.8;
}

.project-content {
    padding: var(--space-6);
}

.project-category {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-title {
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--space-2) 0 var(--space-4);
}

.project-description {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.project-stats {
    display: flex;
    gap: var(--space-6);
    margin-bottom: var(--space-4);
    font-size: var(--fs-sm);
    color: var(--text-muted);
}

.project-stats strong {
    color: var(--accent-tertiary);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.project-tech span {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

.project-links {
    display: flex;
    gap: var(--space-4);
}

.project-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.project-link:hover {
    color: var(--accent-primary);
}

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

/* =====================================================
   SKILLS SECTION
   ===================================================== */
.skills {
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-8);
}

.skill-category {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.skill-category:hover {
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-3px);
}

.skill-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-glow);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    margin-bottom: var(--space-5);
}

.skill-title {
    font-size: var(--fs-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.skill-tag {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    background: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
}

/* =====================================================
   ACHIEVEMENTS SECTION
   ===================================================== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-12);
}

.achievements-subtitle {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--fs-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-6);
}

.achievements-subtitle svg {
    color: var(--accent-primary);
}

/* Education Cards */
.education-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.education-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: all var(--transition-base);
}

.education-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
}

.education-year {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--accent-primary);
    margin-bottom: var(--space-2);
}

.education-degree {
    font-size: var(--fs-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.education-institution {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
}

.education-score {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    color: var(--accent-tertiary);
    margin-top: var(--space-2);
}

/* Achievement Cards */
.achievement-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.achievement-card {
    display: flex;
    gap: var(--space-4);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: all var(--transition-base);
}

.achievement-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
}

.achievement-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.achievement-icon.gold {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #78350f;
}

.achievement-icon.silver {
    background: linear-gradient(135deg, #94a3b8, #64748b);
    color: #1e293b;
}

.achievement-icon.bronze {
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: #7c2d12;
}

.achievement-icon.code {
    background: var(--gradient-primary);
    color: var(--bg-primary);
}

.achievement-content h4 {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.achievement-content p {
    font-size: var(--fs-xs);
    color: var(--text-muted);
}

/* =====================================================
   CONTACT SECTION
   ===================================================== */
.contact {
    background: var(--bg-secondary);
}

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

.contact-intro {
    font-size: var(--fs-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-10);
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    flex-wrap: wrap;
    margin-bottom: var(--space-10);
}

.contact-method {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.contact-method:hover {
    color: var(--accent-primary);
    transform: translateY(-3px);
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

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

.contact-method span {
    font-size: var(--fs-sm);
    font-weight: 500;
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
    padding: var(--space-8) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-text {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.footer-copyright {
    font-size: var(--fs-xs);
    color: var(--text-muted);
}

/* =====================================================
   ANIMATIONS
   ===================================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll animations */
[data-aos="fade-up"] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --fs-6xl: 3.5rem;
        --fs-5xl: 2.75rem;
    }
    
    .project-card.featured {
        grid-column: span 1;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --fs-6xl: 2.5rem;
        --fs-5xl: 2rem;
        --fs-4xl: 1.75rem;
        --fs-3xl: 1.5rem;
    }
    
    .menu-toggle {
        display: block;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        padding: var(--space-8);
        transition: right var(--transition-base);
        box-shadow: var(--shadow-xl);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: var(--fs-lg);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-4);
    }
    
    .timeline {
        padding-left: var(--space-6);
    }
    
    .timeline-marker {
        left: calc(-1 * var(--space-6) - 6px);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        flex-direction: column;
        height: auto;
        gap: var(--space-1);
    }
    
    .hero-cta {
        flex-direction: column;
        gap: var(--space-3);
    }
    
    .section-title {
        font-size: var(--fs-2xl);
        flex-wrap: wrap;
    }
    
    .title-line {
        display: none;
    }
    
    .contact-methods {
        flex-direction: column;
        gap: var(--space-4);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}