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

:root {
    /* Colors - Light Theme */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-secondary: #64748b;
    --color-accent: #06b6d4;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    
    /* Backgrounds */
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-tertiary: #e2e8f0;
    --bg-card: #ffffff;
    --bg-overlay: rgba(15, 23, 42, 0.8);
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;
    
    /* Borders */
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --bg-overlay: rgba(0, 0, 0, 0.8);
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverse: #0f172a;
    
    --border-color: #334155;
    --border-hover: #475569;
}

/* BASE STYLES */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 6rem;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
    font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-primary);
}

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

button, input, select, textarea {
    font: inherit;
}

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

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

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

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

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

/* ANIMATED BACKGROUND */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    background: var(--bg-primary);
    overflow: hidden;
}

.bg-animation::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.03) 0%, transparent 50%);
    animation: rotate 30s linear infinite;
}

.bg-animation::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(37, 99, 235, 0.03) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

/* LAYOUT */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.section-dark {
    background-color: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* NAVIGATION */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--space-sm) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

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

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

/* Mobile Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 4rem;
        flex-direction: column;
        background: var(--bg-card);
        width: 100%;
        text-align: center;
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
        padding: var(--space-lg) 0;
        gap: var(--space-lg);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }
}

/* HERO SECTION */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    position: relative;
    background: var(--bg-primary);
}

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.hero-image-container {
    position: relative;
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 1s ease-out;
}

.hero-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-primary);
    box-shadow: var(--shadow-2xl);
    transition: all var(--transition-slow);
}

.hero-image:hover {
    transform: scale(1.05);
    box-shadow: 0 30px 60px -12px rgba(37, 99, 235, 0.3);
}

.hero-badge {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: var(--color-success);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    box-shadow: var(--shadow-lg);
}

.status-dot {
    width: 6px;
    height: 6px;
    background: currentColor;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-title {
    margin-bottom: var(--space-lg);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.greeting {
    display: block;
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.name {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    margin-bottom: var(--space-xl);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.typewriter-text {
    font-family: var(--font-mono);
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    color: var(--color-primary);
    font-weight: 500;
}

.cursor {
    animation: pulse 1s infinite;
    color: var(--color-primary);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 1s ease-out 0.8s both;
}

.hero-social {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    animation: fadeInUp 1s ease-out 1s both;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: 0.875rem;
    animation: float 3s ease-in-out infinite;
}

.scroll-line {
    width: 2px;
    height: 30px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    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 var(--transition-slow);
}

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

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

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

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

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

/* SOCIAL LINKS */
.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.social-link:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* ABOUT SECTION */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.about-text {
    animation: slideInLeft 1s ease-out;
}

.about-highlights {
    display: grid;
    gap: var(--space-lg);
    margin: var(--space-2xl) 0;
}

.highlight-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
    padding: var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.highlight-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.highlight-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.highlight-item h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.highlight-item p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

.about-perks {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.perk {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.about-stats {
    display: grid;
    gap: var(--space-lg);
    animation: slideInRight 1s ease-out;
}

.stat-card {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

/* SKILLS SECTION */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
}

.tech-section {
    background: var(--bg-card);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.tech-section:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.tech-title {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    font-size: 1.25rem;
}

.tech-title svg {
    color: var(--color-primary);
}

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

.tech-tag {
    padding: var(--space-sm) var(--space-md);
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* PROJECTS SECTION */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-2xl);
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.project-card.featured {
    border: 2px solid var(--color-primary);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

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

.project-card:hover .project-img {
    transform: scale(1.1);
}

.project-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    background: var(--bg-tertiary);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

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

.project-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: white;
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.project-link:hover {
    transform: scale(1.1);
    background: var(--color-primary);
    color: white;
}

.project-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--color-success);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.project-content {
    padding: var(--space-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: 1.25rem;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: auto;
}

.project-tech .tech-tag {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.project-tech .tech-tag:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-1px);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-2xl);
    padding-left: 80px;
}

.timeline-dot {
    position: absolute;
    left: 22px;
    top: 0;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border: 4px solid var(--bg-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
}

.timeline-item.active .timeline-dot {
    background: var(--color-success);
    animation: pulse 2s infinite;
}

.timeline-content {
    background: var(--bg-card);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.timeline-date {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: var(--space-sm);
}

.timeline-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.timeline-content h4 {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.timeline-content p {
    margin-bottom: var(--space-md);
}

.timeline-skills {
    list-style: none;
    display: grid;
    gap: var(--space-sm);
}

.timeline-skills li {
    position: relative;
    padding-left: var(--space-lg);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.timeline-skills li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-size: 0.75rem;
}

/* EDUCATION GRID */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.education-card {
    background: var(--bg-card);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
}

.education-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.education-card.featured {
    border: 2px solid var(--color-primary);
    background: rgba(37, 99, 235, 0.02);
}

.education-year {
    position: absolute;
    top: -10px;
    left: var(--space-lg);
    background: var(--color-primary);
    color: white;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

.education-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: 1.125rem;
}

.education-content h4 {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.education-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
}

.education-status {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.education-status.current {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.education-status.completed {
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

/* EXTRAS SECTION */
.extras-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.extra-card {
    background: var(--bg-card);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.extra-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.extra-header svg {
    color: var(--color-primary);
}

.extra-header h3 {
    color: var(--text-primary);
    font-size: 1.125rem;
}

.extra-list {
    list-style: none;
    display: grid;
    gap: var(--space-lg);
}

.extra-list li {
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-fast);
}

.extra-list li:hover {
    transform: translateX(4px);
    background: rgba(37, 99, 235, 0.05);
}

.extra-list strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: var(--space-xs);
}

/* CONTACT SECTION */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.contact-text h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    font-size: 1.5rem;
}

.contact-text p {
    margin-bottom: var(--space-2xl);
    font-size: 1.125rem;
}

.contact-info {
    display: grid;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.contact-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.contact-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-item div {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.contact-item strong {
    color: var(--text-primary);
    font-weight: 600;
}

.contact-item span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.contact-social {
    margin-top: var(--space-xl);
    text-align: center;
}

.contact-social span {
    display: block;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
}

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

.social-links .social-link {
    width: 40px;
    height: 40px;
}

/* FOOTER */
.footer {
    background: var(--bg-secondary);
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-left p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

.footer-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.theme-toggle:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.theme-toggle .sun-icon {
    display: block;
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

.back-to-top {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-lg);
    }
    
    .section {
        padding: var(--space-2xl) 0;
    }
}

@media (max-width: 768px) {
    :root {
        --space-3xl: 3rem;
        --space-2xl: 2rem;
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero {
        min-height: 90vh;
        padding: var(--space-2xl) var(--space-md);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-social {
        gap: var(--space-md);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-stats {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .skills-container {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .extras-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .education-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 40px;
    }
    
    .timeline-dot {
        left: 7px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-image {
        width: 150px;
        height: 150px;
    }
    
    .btn {
        padding: var(--space-sm) var(--space-lg);
        font-size: 0.9rem;
    }
    
    .btn.large {
        padding: var(--space-md) var(--space-xl);
        font-size: 1rem;
    }
    
    .about-highlights {
        gap: var(--space-md);
    }
    
    .highlight-item {
        padding: var(--space-md);
    }
    
    .about-perks {
        justify-content: center;
    }
    
    .tech-section {
        padding: var(--space-lg);
    }
    
    .timeline-content {
        padding: var(--space-lg);
    }
    
    .education-card {
        padding: var(--space-lg);
    }
    
    .extra-card {
        padding: var(--space-lg);
    }
}

/* ACCESSIBILITY */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .scroll-indicator {
        animation: none;
    }
    
    .status-dot {
        animation: none;
    }
}

/* FOCUS STATES */
*:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn:focus,
.social-link:focus,
.nav-link:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

/* SELECTION */
::selection {
    background: rgba(37, 99, 235, 0.2);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(37, 99, 235, 0.2);
    color: var(--text-primary);
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

/* SCROLL ANIMATIONS */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

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

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all var(--transition-slow);
}

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

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all var(--transition-slow);
}

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

/* PRINT STYLES */
@media print {
    .navbar,
    .hero-actions,
    .hero-social,
    .scroll-indicator,
    .footer,
    .project-overlay,
    .bg-animation {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-lg) 0;
    }
    
    .section {
        padding: var(--space-lg) 0;
        page-break-inside: avoid;
    }
    
    .project-card,
    .education-card,
    .extra-card {
        page-break-inside: avoid;
    }
    
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
}

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

/* PERFORMANCE OPTIMIZATIONS */
.will-change-transform { will-change: transform; }
.will-change-opacity { will-change: opacity; }
.will-change-scroll { will-change: scroll-position; }

/* MODERN BROWSER FEATURES */
@supports (backdrop-filter: blur(10px)) {
    .navbar {
        backdrop-filter: blur(10px);
    }
}
.project-link.disabled {
    cursor: not-allowed;
    opacity: 0.5;
    pointer-events: none;
}
/* END OF STYLESHEET */