/* ============================================
   FRESH AESTHETIC DESIGN - FROM SCRATCH
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Clean Color System */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    
    /* Neutrals */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Semantic - Light Mode */
    --text: var(--gray-900);
    --text-muted: var(--gray-600);
    --text-light: var(--gray-400);
    --bg: #ffffff;
    --bg-alt: var(--gray-50);
    --border: var(--gray-200);
    
    /* Shadows - Light Mode */
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    
    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* 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;
    
    /* Radius */
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode */
[data-theme="dark"] {
    /* Semantic - Dark Mode */
    --text: #f9fafb;
    --text-muted: #d1d5db;
    --text-light: #9ca3af;
    --bg: #0f172a;
    --bg-alt: #1e293b;
    --border: #334155;
    
    /* Shadows - Dark Mode (lighter, more visible) */
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

@media (min-width: 769px) {
    body {
        cursor: none;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    position: relative;
    z-index: 1;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: var(--transition);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.85);
    border-bottom-color: var(--border);
}

.navbar.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: transparent;
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-5) 0;
    position: relative;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    position: absolute;
    right: 0;
}

.logo a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-2);
    align-items: center;
    background: var(--bg-alt);
    padding: var(--space-2);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
}

.nav-menu li {
    position: relative;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition);
    position: relative;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-full);
    display: block;
    z-index: 1;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.nav-link:hover::before,
.nav-link.active::before {
    opacity: 1;
}

.nav-link:hover,
.nav-link.active {
    color: white;
    transform: translateY(-1px);
}

.nav-link.active {
    box-shadow: var(--shadow-md);
}

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

.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 32px;
    cursor: pointer;
}

.theme-switch-input {
    opacity: 0;
    width: 0;
    height: 0;
}

.theme-switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-alt);
    border: 2px solid var(--border);
    border-radius: var(--radius-full);
    transition: var(--transition);
    box-shadow: var(--shadow) inset;
}

.theme-switch-slider::before {
    content: '';
    position: absolute;
    height: 24px;
    width: 24px;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    border-radius: var(--radius-full);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.theme-switch-input:checked + .theme-switch-slider {
    background: var(--bg-alt);
    border-color: var(--primary);
}

.theme-switch-input:checked + .theme-switch-slider::before {
    transform: translateX(28px) translateY(-50%);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.theme-icon-sun,
.theme-icon-moon {
    position: absolute;
    font-size: 0.75rem;
    transition: var(--transition);
    z-index: 3;
    color: white;
    pointer-events: none;
    top: 50%;
    left: 16px;
    transform: translate(-50%, -50%);
}

.theme-icon-sun {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
}

.theme-icon-moon {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0) rotate(180deg);
}

.theme-switch-input:checked + .theme-switch-slider .theme-icon-sun {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0) rotate(180deg);
}

.theme-switch-input:checked + .theme-switch-slider .theme-icon-moon {
    opacity: 1;
    left: 44px;
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
}

.theme-switch:hover .theme-switch-slider {
    box-shadow: var(--shadow-lg) inset;
    border-color: var(--primary);
}

.theme-switch:hover .theme-switch-slider::before {
    box-shadow: var(--shadow-lg);
}

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

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

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

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    opacity: 0.95;
}

[data-theme="dark"] .gradient-overlay {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    opacity: 0.98;
}

.particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: auto;
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-8) 0;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    letter-spacing: -1px;
}

.hero-title .greeting {
    display: block;
    font-size: 0.875rem;
    font-weight: 400;
    margin-bottom: var(--space-3);
    opacity: 0.9;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-title .name {
    display: block;
    margin-bottom: var(--space-3);
}

.title-text {
    display: block;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    opacity: 0.95;
    margin-top: var(--space-2);
}

.typing-text {
    display: inline-block;
}

.cursor {
    display: inline-block;
    animation: blink 1s infinite;
    margin-left: 4px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--space-8);
    opacity: 0.95;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
}

.btn {
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    border: 2px solid transparent;
}

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: white;
    color: var(--primary);
    border-color: white;
}

.social-links {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
}

.social-links a {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: white;
    animation: bounce 2s infinite;
}

.scroll-indicator p {
    font-size: 0.875rem;
    margin-top: var(--space-2);
    opacity: 0.9;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid white;
    border-radius: 15px;
    margin: 0 auto;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: white;
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { top: 8px; opacity: 1; }
    100% { top: 25px; opacity: 0; }
}

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

/* ============================================
   DECORATIVE SHAPES
   ============================================ */
.decorative-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.shape {
    position: absolute;
    border-radius: var(--radius-full);
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
    filter: blur(40px);
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: 10%;
    left: -5%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    top: 60%;
    right: -3%;
    animation-delay: 2s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    bottom: 20%;
    left: 10%;
    animation-delay: 4s;
}

.shape-4 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: 20%;
    right: -5%;
    animation-delay: 1s;
}

.shape-5 {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    bottom: 15%;
    left: -3%;
    animation-delay: 3s;
}

.shape-6 {
    width: 320px;
    height: 320px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: 5%;
    left: -8%;
    animation-delay: 0.5s;
}

.shape-7 {
    width: 220px;
    height: 220px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    bottom: 10%;
    right: -5%;
    animation-delay: 2.5s;
}

.shape-8 {
    width: 280px;
    height: 280px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(30px, -30px) rotate(90deg);
    }
    50% {
        transform: translate(-20px, 20px) rotate(180deg);
    }
    75% {
        transform: translate(20px, 30px) rotate(270deg);
    }
}

[data-theme="dark"] .shape {
    opacity: 0.15;
    filter: blur(50px);
}

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: var(--space-20) 0;
    position: relative;
    overflow: hidden;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-12);
    color: var(--text);
    letter-spacing: -0.5px;
    position: relative;
    z-index: 1;
}

.section-title::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1), transparent 70%);
    border-radius: var(--radius-full);
    z-index: -1;
    animation: pulse-glow 3s ease-in-out infinite;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    margin: var(--space-4) auto 0;
    border-radius: var(--radius-full);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.1;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.2;
    }
}

@keyframes shimmer {
    0%, 100% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
    }
    50% {
        box-shadow: 0 0 30px rgba(139, 92, 246, 0.8);
    }
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: var(--space-12);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   ABOUT
   ============================================ */
.about {
    background: var(--bg-alt);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.5;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-12);
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 3px solid transparent;
    background: linear-gradient(var(--bg), var(--bg)) padding-box,
                linear-gradient(135deg, var(--primary), var(--secondary)) border-box;
}

.image-wrapper::before {
    content: '';
    position: absolute;
    inset: -3px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-2xl);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
    filter: blur(10px);
}

.image-wrapper:hover::before {
    opacity: 0.5;
}

.image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-wrapper:hover .image-overlay {
    opacity: 0.1;
}

.about-text h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-6);
    color: var(--text);
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: var(--space-6);
    line-height: 1.8;
}

.about-contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin: var(--space-8) 0;
    padding: var(--space-6);
    background: var(--bg-alt);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
}

.about-contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    color: var(--text-muted);
    transition: var(--transition);
}

.about-contact-item i {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    flex-shrink: 0;
}

.about-contact-item a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

.about-contact-item span {
    color: var(--text);
    font-weight: 500;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.stat-item {
    text-align: center;
    padding: var(--space-6);
    background: var(--bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(135deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transform: rotate(45deg);
    transition: var(--transition);
    opacity: 0;
}

.stat-item:hover::before {
    animation: shine 0.6s ease-in-out;
    opacity: 1;
}

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

@keyframes shine {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-2);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* ============================================
   GITHUB PROFILE
   ============================================ */
.github-section {
    background: var(--bg-alt);
}

.github-card {
    background: var(--bg);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
    max-width: 1000px;
    margin: 0 auto;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.github-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.05), transparent 70%);
    animation: rotate-glow 20s linear infinite;
}

@keyframes rotate-glow {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.github-card:hover {
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.15), var(--shadow-xl);
    transform: translateY(-4px);
    border-color: var(--primary);
}

.github-header {
    display: flex;
    gap: var(--space-8);
    align-items: flex-start;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-8);
    border-bottom: 2px solid var(--border);
}

.github-avatar {
    position: relative;
    flex-shrink: 0;
}

.github-avatar img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    border: 4px solid var(--primary);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.github-card:hover .github-avatar img {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.github-status {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: #10b981;
    border: 3px solid var(--bg);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.github-info {
    flex: 1;
}

.github-username {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    transition: var(--transition);
    margin-bottom: var(--space-2);
}

.github-username:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.github-username i {
    font-size: 1.5rem;
    color: var(--primary);
}

.github-bio {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: var(--space-6);
    line-height: 1.6;
}

.github-stats {
    display: flex;
    gap: var(--space-8);
    flex-wrap: wrap;
}

.github-stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

.github-repos {
    margin-bottom: var(--space-8);
}

.github-repos h4 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-6);
    color: var(--text);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.github-repos h4::before {
    content: '';
    width: 4px;
    height: 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
}

.repos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.repo-card {
    background: var(--bg-alt);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: pointer;
}

.repo-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
    background: var(--bg);
}

.repo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.repo-name {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: var(--transition);
}

.repo-name:hover {
    color: var(--primary);
}

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

.repo-visibility {
    padding: var(--space-1) var(--space-3);
    background: var(--bg-alt);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

.repo-description {
    color: var(--text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-4);
    min-height: 48px;
}

.repo-footer {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.repo-language {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.language-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--primary);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.5);
}

.github-footer {
    text-align: center;
    padding-top: var(--space-6);
    border-top: 2px solid var(--border);
}

.github-footer .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    font-size: 1.125rem;
}

.github-footer .btn i {
    font-size: 1.25rem;
}

/* ============================================
   SKILLS
   ============================================ */
.skills {
    position: relative;
}

.skills-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-12);
    margin-bottom: var(--space-12);
    position: relative;
    z-index: 1;
}

.skills-category {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-8);
    color: var(--text);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.skills-category i {
    color: var(--primary);
    font-size: 1.75rem;
}

.skill-item {
    margin-bottom: var(--space-6);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

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

.skill-percent {
    font-weight: 700;
    color: var(--primary);
}

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

.skill-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1.5s ease;
    position: relative;
    overflow: hidden;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer-progress 2s infinite;
}

@keyframes shimmer-progress {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.tech-stack {
    margin-top: var(--space-12);
    text-align: center;
}

.tech-stack h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-8);
    color: var(--text);
}

.tech-icons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-6);
}

.tech-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-6);
    background: var(--bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    min-width: 100px;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.tech-icon::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-xl);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.tech-icon:hover::before {
    opacity: 0.1;
}

.tech-icon:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2), var(--shadow-lg);
    border-color: var(--primary);
}

.tech-icon i {
    font-size: 2.5rem;
    color: var(--primary);
}

.tech-icon span {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* ============================================
   PROJECTS
   ============================================ */
.projects {
    background: var(--bg-alt);
    position: relative;
}

.projects::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.5;
}

.project-filters {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--space-3) var(--space-6);
    border: 2px solid var(--border);
    background: var(--bg);
    border-radius: var(--radius-full);
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9375rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
    position: relative;
    z-index: 1;
}

.project-card {
    background: var(--bg);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
}

.project-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
    pointer-events: none;
}

.project-card:hover::after {
    opacity: 0.03;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2), var(--shadow-xl);
    border-color: var(--primary);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 250px;
    background: var(--bg-alt);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-overlay {
    opacity: 0.95;
}

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

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

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

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

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

.project-info h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: var(--text);
}

.project-info p {
    color: var(--text-muted);
    margin-bottom: var(--space-4);
    line-height: 1.7;
}

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

.project-tags span {
    padding: var(--space-1) var(--space-3);
    background: var(--bg-alt);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
    position: relative;
}

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

.service-card {
    background: var(--bg);
    padding: var(--space-8) var(--space-6);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.service-card:hover::before {
    left: 100%;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15), var(--shadow-xl);
    border-color: var(--primary);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    transition: var(--transition);
    position: relative;
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
}

.service-icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
    opacity: 0.3;
    filter: blur(10px);
    z-index: -1;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.5);
}

.service-card:hover .service-icon::before {
    opacity: 0.5;
    filter: blur(15px);
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--text);
}

.service-card p {
    color: var(--text-muted);
    margin-bottom: var(--space-6);
    line-height: 1.7;
}

.service-features {
    list-style: none;
    text-align: left;
}

.service-features li {
    padding: var(--space-2) 0;
    color: var(--text-muted);
    position: relative;
    padding-left: var(--space-6);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
    background: linear-gradient(135deg, var(--bg-alt) 0%, var(--bg-alt) 100%);
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .contact {
    background: linear-gradient(135deg, var(--bg-alt) 0%, #0f172a 100%);
}

.contact::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-12);
    position: relative;
    z-index: 1;
}

.contact-info-wrapper {
    display: flex;
    flex-direction: column;
}

.contact-info-card {
    background: var(--bg);
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.contact-info-header h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--text);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-info-header p {
    color: var(--text-muted);
    margin-bottom: var(--space-8);
    line-height: 1.8;
    font-size: 1.0625rem;
}

.contact-details {
    margin-bottom: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-item-link {
    text-decoration: none;
    display: block;
    transition: var(--transition);
}

.contact-item-link:hover .contact-item {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--bg-alt);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.contact-item-link:hover .contact-item::before {
    transform: scaleY(1);
}

.contact-icon-wrapper {
    position: relative;
    flex-shrink: 0;
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    position: relative;
    z-index: 2;
    transition: var(--transition);
}

.icon-glow {
    position: absolute;
    inset: -4px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-xl);
    opacity: 0.3;
    filter: blur(8px);
    transition: var(--transition);
    z-index: 1;
}

.contact-item-link:hover .icon-glow {
    opacity: 0.5;
    filter: blur(12px);
}

.contact-item-link:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
}

.contact-text {
    flex: 1;
}

.contact-text h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    margin-bottom: var(--space-1);
    color: var(--text);
    font-size: 1.125rem;
}

.contact-text p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 0.9375rem;
}

.contact-arrow {
    color: var(--text-muted);
    font-size: 1.125rem;
    transition: var(--transition);
    opacity: 0;
    transform: translateX(-10px);
}

.contact-item-link:hover .contact-arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--primary);
}

.contact-social {
    padding-top: var(--space-6);
    border-top: 2px solid var(--border);
}

.social-label {
    display: block;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
    font-size: 0.9375rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.social-icons {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    width: 48px;
    height: 48px;
    background: var(--bg-alt);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    text-decoration: none;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.social-link i {
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

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

.social-link:hover::before {
    opacity: 1;
}

.social-link:hover i {
    color: white;
    transform: scale(1.2);
}

.contact-form-wrapper {
    display: flex;
    flex-direction: column;
}

.contact-form {
    background: var(--bg);
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
}

.form-header {
    margin-bottom: var(--space-8);
    text-align: center;
}

.form-header h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-2);
    color: var(--text);
}

.form-header p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

.form-group {
    margin-bottom: var(--space-6);
    position: relative;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 600;
    color: var(--text);
    margin-bottom: var(--space-3);
    font-size: 0.9375rem;
}

.form-group label i {
    color: var(--primary);
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-alt);
    color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group textarea:focus {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
    font-family: var(--font-body);
}

.btn-submit {
    width: 100%;
    justify-content: center;
    padding: var(--space-5) var(--space-8);
    font-size: 1.0625rem;
    font-weight: 600;
    margin-top: var(--space-2);
    position: relative;
    overflow: visible;
}

.btn-submit::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.plane-icon-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin-left: var(--space-2);
}

.plane-icon {
    transition: var(--transition);
    display: inline-block;
}

.btn-submit:hover .plane-icon {
    transform: translateX(4px);
}

.btn-submit.sending .btn-text {
    opacity: 0.7;
}

.btn-submit.sending .plane-icon-wrapper {
    pointer-events: none;
}

/* Flying plane animation */
.plane-icon-wrapper.flying {
    position: fixed;
    z-index: 10000;
    pointer-events: none;
    transform: translate(-50%, -50%);
}

.plane-icon-wrapper.flying .plane-icon {
    font-size: 2rem;
    color: var(--primary);
    display: block;
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
    animation: fly-away-right 2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fly-away-right {
    0% {
        transform: translate(0, 0) rotate(0deg) scale(1);
        opacity: 1;
    }
    10% {
        transform: translate(30px, -15px) rotate(15deg) scale(1.2);
        opacity: 1;
    }
    30% {
        transform: translate(150px, -60px) rotate(25deg) scale(1.3);
        opacity: 1;
    }
    50% {
        transform: translate(350px, -120px) rotate(35deg) scale(1.4);
        opacity: 0.9;
    }
    70% {
        transform: translate(600px, -180px) rotate(45deg) scale(1.2);
        opacity: 0.7;
    }
    90% {
        transform: translate(900px, -240px) rotate(55deg) scale(0.8);
        opacity: 0.3;
    }
    100% {
        transform: translate(1200px, -300px) rotate(60deg) scale(0.5);
        opacity: 0;
    }
}

/* Alternative animation for left side */
.plane-icon-wrapper.flying-left {
    position: fixed;
    z-index: 10000;
    pointer-events: none;
    transform: translate(-50%, -50%);
}

.plane-icon-wrapper.flying-left .plane-icon {
    font-size: 2rem;
    color: var(--primary);
    display: block;
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
    animation: fly-away-left 2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    transform: scaleX(-1); /* Flip horizontally for left direction */
}

@keyframes fly-away-left {
    0% {
        transform: translate(0, 0) rotate(0deg) scaleX(-1) scale(1);
        opacity: 1;
    }
    10% {
        transform: translate(-30px, -15px) rotate(-15deg) scaleX(-1) scale(1.2);
        opacity: 1;
    }
    30% {
        transform: translate(-150px, -60px) rotate(-25deg) scaleX(-1) scale(1.3);
        opacity: 1;
    }
    50% {
        transform: translate(-350px, -120px) rotate(-35deg) scaleX(-1) scale(1.4);
        opacity: 0.9;
    }
    70% {
        transform: translate(-600px, -180px) rotate(-45deg) scaleX(-1) scale(1.2);
        opacity: 0.7;
    }
    90% {
        transform: translate(-900px, -240px) rotate(-55deg) scaleX(-1) scale(0.8);
        opacity: 0.3;
    }
    100% {
        transform: translate(-1200px, -300px) rotate(-60deg) scaleX(-1) scale(0.5);
        opacity: 0;
    }
}


/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
}

.animate-on-scroll[data-animation="slide-left"] {
    transform: translateX(-40px);
}

.animate-on-scroll[data-animation="slide-left"].animated {
    transform: translateX(0);
}

.animate-on-scroll[data-animation="slide-right"] {
    transform: translateX(40px);
}

.animate-on-scroll[data-animation="slide-right"].animated {
    transform: translateX(0);
}

.animate-on-scroll[data-animation="slide-up"] {
    transform: translateY(40px);
}

.animate-on-scroll[data-animation="slide-up"].animated {
    transform: translateY(0);
}

.animate-on-scroll[data-animation="scale-up"] {
    transform: scale(0.95);
}

.animate-on-scroll[data-animation="scale-up"].animated {
    transform: scale(1);
}

.animate-on-scroll[data-animation="fade-in"] {
    transform: translateY(20px);
}

.animate-on-scroll[data-animation="fade-in"].animated {
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    section {
        padding: var(--space-12) 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: var(--bg);
        width: calc(100% - var(--space-12));
        max-width: 400px;
        padding: var(--space-6);
        box-shadow: var(--shadow-xl);
        transition: var(--transition);
        gap: var(--space-2);
        border: 1px solid var(--border);
        border-radius: var(--radius-2xl);
        margin: 0 var(--space-6);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .contact-info-card {
        position: relative;
        top: 0;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .skills-content {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .nav-wrapper {
        justify-content: space-between;
    }
    
    .nav-actions {
        position: relative;
    }
    
    .github-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .github-stats {
        justify-content: center;
    }
    
    .repos-grid {
        grid-template-columns: 1fr;
    }
    
    .github-card {
        padding: var(--space-6);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}