/* ============================================
   CSS Variables - Theme System
   ============================================ */
:root {
    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-tertiary: #adb5bd;
    --accent-primary: #2563eb;
    --accent-secondary: #3b82f6;
    --accent-hover: #1d4ed8;
    --border-color: #dee2e6;
    --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);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Gradient Colors */
    --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%);
    --gradient-dark: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --bg-tertiary: #2d2d2d;
    --text-primary: #f5f5f5;
    --text-secondary: #b3b3b3;
    --text-tertiary: #808080;
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-hover: #2563eb;
    --border-color: #404040;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --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, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* System Preference Detection */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --bg-primary: #1a1a1a;
        --bg-secondary: #242424;
        --bg-tertiary: #2d2d2d;
        --text-primary: #f5f5f5;
        --text-secondary: #b3b3b3;
        --text-tertiary: #808080;
        --accent-primary: #3b82f6;
        --accent-secondary: #60a5fa;
        --accent-hover: #2563eb;
        --border-color: #404040;
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
        --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, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    }
}

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


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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

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

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

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

/* Focus styles for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

ul {
    list-style: none;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    text-align: center;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), #8b5cf6);
    border-radius: 2px;
    animation: expandLine 1s ease forwards;
}

@keyframes expandLine {
    to {
        width: 80px;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Stagger animation for grid items */
.skills-grid .fade-in:nth-child(1) { transition-delay: 0.1s; }
.skills-grid .fade-in:nth-child(2) { transition-delay: 0.2s; }
.skills-grid .fade-in:nth-child(3) { transition-delay: 0.3s; }
.skills-grid .fade-in:nth-child(4) { transition-delay: 0.4s; }
.skills-grid .fade-in:nth-child(5) { transition-delay: 0.5s; }

.projects-grid .fade-in:nth-child(1) { transition-delay: 0.1s; }
.projects-grid .fade-in:nth-child(2) { transition-delay: 0.2s; }
.projects-grid .fade-in:nth-child(3) { transition-delay: 0.3s; }
.projects-grid .fade-in:nth-child(4) { transition-delay: 0.4s; }

.achievements-grid .fade-in:nth-child(1) { transition-delay: 0.1s; }
.achievements-grid .fade-in:nth-child(2) { transition-delay: 0.2s; }
.achievements-grid .fade-in:nth-child(3) { transition-delay: 0.3s; }

/* ============================================
   Navigation
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg-primary);
    backdrop-filter: blur(20px) saturate(180%);
    background-color: rgba(255, 255, 255, 0.85);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    background-color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .header {
    background-color: rgba(26, 26, 26, 0.85);
}

[data-theme="dark"] .header.scrolled {
    background-color: rgba(26, 26, 26, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    height: 70px;
}

.logo a {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

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

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

.nav-link {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-base);
}

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

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

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

.theme-toggle {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    transition: background-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background-color: var(--bg-secondary);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

/* Animated Background */
.animated-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(59, 130, 246, 0.1) 50%, rgba(139, 92, 246, 0.1) 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    z-index: 0;
}

[data-theme="dark"] .animated-bg {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0.15) 50%, rgba(236, 72, 153, 0.15) 100%);
    background-size: 400% 400%;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Floating Shapes */
.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--accent-primary);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--accent-secondary);
    top: 60%;
    right: 10%;
    animation-delay: 2s;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: #8b5cf6;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
}

.shape-4 {
    width: 250px;
    height: 250px;
    background: #ec4899;
    top: 30%;
    right: 30%;
    animation-delay: 6s;
    border-radius: 40% 60% 60% 40% / 60% 30% 70% 40%;
}

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

.hero-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
}

.profile-photo {
    width: 100%;
    max-width: 350px;
    height: auto;
    border-radius: 50%;
    border: 5px solid var(--accent-primary);
    box-shadow: 0 20px 60px rgba(37, 99, 235, 0.3);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    animation: floatPhoto 6s ease-in-out infinite;
}

.profile-photo:hover {
    transform: scale(1.05);
    box-shadow: 0 25px 70px rgba(37, 99, 235, 0.4);
}

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

.hero-content {
    text-align: left;
    position: relative;
    z-index: 2;
}

.hero-title {
    margin-bottom: var(--spacing-md);
}

.greeting {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-normal);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.name {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientText 3s ease infinite;
    position: relative;
    display: inline-block;
}

.name::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    border-radius: 2px;
    animation: gradientText 3s ease infinite;
    opacity: 0.5;
}

@keyframes gradientText {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Typing Effect */
.typing-text {
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: var(--font-weight-medium);
    position: relative;
    display: inline-block;
}

.typing-text::after {
    content: '|';
    animation: blink 1s infinite;
    color: var(--accent-primary);
    font-weight: var(--font-weight-bold);
}

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

.hero-subtitle {
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: var(--font-weight-medium);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.5s both;
}

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

.hero-social-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
    animation: fadeInUp 1s ease 0.7s both;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
    min-width: 120px;
    text-align: center;
}

.social-btn span {
    position: relative;
    z-index: 1;
}

.social-icon-svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
    flex-shrink: 0;
    transition: transform var(--transition-base);
    position: relative;
    z-index: 1;
}

.social-btn:hover .social-icon-svg {
    transform: scale(1.2) rotate(5deg);
}

.social-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
    z-index: 0;
}

.social-btn.linkedin {
    background-color: #0077b5;
    color: white;
}

.social-btn.linkedin::before {
    background: rgba(255, 255, 255, 0.2);
}

.social-btn.github {
    background-color: #24292e;
    color: white;
}

.social-btn.github::before {
    background: rgba(255, 255, 255, 0.2);
}

.social-btn.leetcode {
    background-color: #ffa116;
    color: white;
}

.social-btn.leetcode::before {
    background: rgba(255, 255, 255, 0.2);
}

.social-btn.geeksforgeeks {
    background-color: #2f8d46;
    color: white;
}

.social-btn.geeksforgeeks::before {
    background: rgba(255, 255, 255, 0.2);
}

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

.social-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .social-btn.linkedin {
    background-color: #0077b5;
}

[data-theme="dark"] .social-btn.github {
    background-color: #24292e;
}

[data-theme="dark"] .social-btn.leetcode {
    background-color: #ffa116;
}

[data-theme="dark"] .social-btn.geeksforgeeks {
    background-color: #2f8d46;
}

.social-link {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    position: relative;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.social-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transform: translateX(-50%);
    transition: width var(--transition-base);
}

.social-link:hover {
    color: var(--accent-primary);
    transform: translateY(-2px);
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-align: center;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

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

.btn-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.4), 0 0 20px rgba(37, 99, 235, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 10px 25px rgba(37, 99, 235, 0.4), 0 0 20px rgba(37, 99, 235, 0.3);
    }
    50% {
        box-shadow: 0 10px 25px rgba(37, 99, 235, 0.6), 0 0 30px rgba(37, 99, 235, 0.5);
    }
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--accent-primary);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    z-index: -1;
}

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

.btn-secondary:hover {
    color: white;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

/* ============================================
   About Section
   ============================================ */
.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    text-align: center;
}

.about-intro,
.about-goal {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.about-highlights {
    display: flex;
    justify-content: center;
}

.highlight-card {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 500px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.education-card {
    border: 2px solid transparent;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    position: relative;
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), #8b5cf6);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

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

.education-icon {
    font-size: var(--font-size-4xl);
    text-align: center;
    margin-bottom: var(--spacing-md);
    animation: floatIcon 3s ease-in-out infinite;
    display: block;
}

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

.highlight-card h3 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-2xl);
    position: relative;
}

.education-item {
    position: relative;
}

.education-degree {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
    border-radius: var(--border-radius-md);
    border-left: 3px solid var(--accent-primary);
    transition: all var(--transition-base);
}

.education-degree:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.degree-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
    flex-shrink: 0;
    margin-top: var(--spacing-xs);
    transition: transform var(--transition-base);
}

.education-degree:hover .degree-icon {
    transform: rotate(15deg) scale(1.1);
}

.education-item h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-lg);
}

.degree {
    color: var(--accent-primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: 0;
    font-size: var(--font-size-base);
}

.education-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.education-detail-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.education-detail-item:hover {
    background-color: var(--bg-primary);
    border-color: var(--accent-primary);
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.detail-icon {
    width: 20px;
    height: 20px;
    color: var(--accent-primary);
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.education-detail-item:hover .detail-icon {
    transform: scale(1.2) rotate(5deg);
}

.institution,
.location,
.duration {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
    font-weight: var(--font-weight-medium);
}


/* ============================================
   Skills Section
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.skill-category {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.15), transparent);
    transition: left 0.6s;
}

.skill-category::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), #8b5cf6);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.skill-category:hover::before {
    left: 100%;
}

.skill-category:hover::after {
    transform: scaleX(1);
}

.skill-category:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.25);
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(37, 99, 235, 0.05) 100%);
}

.skill-category {
    transform-style: preserve-3d;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.skill-category-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.skill-category-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-xs);
    animation: skillIconFloat 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 8px rgba(37, 99, 235, 0.3));
    transition: transform var(--transition-base);
}

@keyframes skillIconFloat {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-8px) rotate(5deg);
    }
}

.skill-category:hover .skill-category-icon {
    animation: skillIconPulse 0.6s ease;
    transform: scale(1.2) rotate(10deg);
}

@keyframes skillIconPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.3) rotate(15deg);
    }
}

.skill-category-title {
    color: var(--accent-primary);
    font-size: var(--font-size-xl);
    margin: 0;
    text-align: center;
    font-weight: var(--font-weight-semibold);
    position: relative;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.skill-tag {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid rgba(37, 99, 235, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.skill-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.skill-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    transform: translate(-50%, -50%);
    transition: width 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275), 
                height 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: -1;
    opacity: 0.9;
}

.skill-tag:hover::before {
    left: 100%;
}

.skill-tag:hover::after {
    width: 250px;
    height: 250px;
}

.skill-tag:hover {
    color: white;
    transform: translateY(-4px) scale(1.15) rotate(3deg);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.5),
                0 0 15px rgba(37, 99, 235, 0.3),
                inset 0 0 15px rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    z-index: 1;
}

/* Different gradient colors for each category */
.skill-category:nth-child(1) .skill-tag:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.5),
                0 0 15px rgba(102, 126, 234, 0.3);
}

.skill-category:nth-child(2) .skill-tag:hover {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    box-shadow: 0 8px 20px rgba(245, 87, 108, 0.5),
                0 0 15px rgba(245, 87, 108, 0.3);
}

.skill-category:nth-child(3) .skill-tag:hover {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    box-shadow: 0 8px 20px rgba(79, 172, 254, 0.5),
                0 0 15px rgba(79, 172, 254, 0.3);
}

.skill-category:nth-child(4) .skill-tag:hover {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    box-shadow: 0 8px 20px rgba(67, 233, 123, 0.5),
                0 0 15px rgba(67, 233, 123, 0.3);
}

.skill-category:nth-child(5) .skill-tag:hover {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    box-shadow: 0 8px 20px rgba(250, 112, 154, 0.5),
                0 0 15px rgba(250, 112, 154, 0.3);
}

/* ============================================
   Experience Section
   ============================================ */
.experience-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.experience-item {
    margin-bottom: var(--spacing-xl);
}

.experience-card {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border-left: 4px solid var(--accent-primary);
}

.experience-card:hover {
    transform: translateX(10px) translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-left-width: 6px;
}

.experience-header {
    margin-bottom: var(--spacing-md);
}

.experience-title {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
}

.experience-company {
    color: var(--accent-primary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-lg);
}

.experience-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.experience-date,
.experience-location {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.experience-details {
    list-style: none;
    padding-left: 0;
}

.experience-details li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    position: relative;
    line-height: var(--line-height-relaxed);
}

.experience-details li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: var(--font-weight-bold);
}

/* ============================================
   Projects Section
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), #8b5cf6);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.2);
    border-color: var(--accent-primary);
}

.project-card {
    transform-style: preserve-3d;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
}

.project-title {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    margin-bottom: 0;
    flex: 1;
}

.project-date {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
    white-space: nowrap;
}

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

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.tech-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--bg-tertiary);
    color: var(--accent-primary);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--accent-primary);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.tech-tag::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--accent-primary);
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
    z-index: -1;
    opacity: 0.2;
}

.tech-tag:hover::before {
    width: 150px;
    height: 150px;
}

.tech-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    background-color: var(--accent-primary);
    color: white;
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: auto;
}

.project-link {
    color: var(--accent-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--accent-primary);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
}

.project-link:hover {
    background-color: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

/* ============================================
   Achievements Section
   ============================================ */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.achievement-card {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.achievement-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.achievement-card:hover {
    transform: translateY(-8px) rotate(1deg);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.25);
    border-color: var(--accent-primary);
}

.achievement-card {
    transform-style: preserve-3d;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.achievement-icon {
    transition: transform var(--transition-base);
}

.achievement-card:hover .achievement-icon {
    transform: scale(1.2) rotate(10deg);
}

.achievement-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.achievement-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.achievement-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--accent-primary);
    display: inline-block;
    transition: transform var(--transition-base);
}

.achievement-card:hover .stat-number {
    transform: scale(1.1);
}

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

.stat-platform {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
}

.achievement-list,
.certification-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: left;
}

.hackathon-item,
.cert-item {
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius-md);
}

.hackathon-item h4,
.cert-item h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.hackathon-item p,
.cert-item p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.hackathon-rank,
.cert-duration {
    color: var(--accent-primary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    max-width: 1000px;
    margin: 0 auto;
}

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

.contact-intro {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: var(--line-height-relaxed);
}

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

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

.contact-label {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-value {
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
}

.contact-social {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.social-icon {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.social-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--accent-primary);
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
    z-index: -1;
}

.social-icon:hover::before {
    width: 300px;
    height: 300px;
}

.social-icon:hover {
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.contact-form {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-3xl);
}

.footer p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.footer-note {
    color: var(--text-tertiary);
    font-size: var(--font-size-xs);
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-social-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .name {
        font-size: var(--font-size-4xl);
    }
    
    .profile-photo {
        max-width: 280px;
    }
    
    .hero-description {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: left var(--transition-base);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-xl) 0;
        gap: var(--spacing-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .name {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-social-buttons {
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .social-btn {
        min-width: 90px;
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
        gap: var(--spacing-xs);
    }
    
    .social-icon-svg {
        width: 16px;
        height: 16px;
    }
    
    .profile-photo {
        max-width: 250px;
    }
    
    .hero-description {
        max-width: 100%;
        margin-left: 0;
        margin-right: 0;
    }
    
    .floating-shapes .shape {
        opacity: 0.05;
    }
    
    .shape-1 {
        width: 150px;
        height: 150px;
    }
    
    .shape-2 {
        width: 100px;
        height: 100px;
    }
    
    .shape-3 {
        width: 80px;
        height: 80px;
    }
    
    .shape-4 {
        width: 120px;
        height: 120px;
    }
}

/* Smooth scroll behavior enhancement */
html {
    scroll-padding-top: 80px;
}

/* Loading animation */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Enhanced focus states */
*:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 4px;
    border-radius: var(--border-radius-sm);
}

/* Smooth transitions for theme changes */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Touch-friendly mobile interactions */
@media (max-width: 768px) {
    .btn,
    .social-btn,
    .project-link,
    .social-icon {
        -webkit-tap-highlight-color: rgba(37, 99, 235, 0.2);
    }
    
    .skill-tag,
    .tech-tag {
        -webkit-tap-highlight-color: rgba(37, 99, 235, 0.2);
    }
    
    /* Disable hover effects on touch devices */
    @media (hover: none) {
        .project-card:hover,
        .achievement-card:hover,
        .skill-category:hover {
            transform: none;
        }
        
        .social-btn:hover {
            transform: none;
        }
        
        .btn-primary:hover,
        .btn-secondary:hover {
            transform: none;
        }
    }
}

/* Landscape mobile optimization */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }
    
    .hero-wrapper {
        gap: var(--spacing-lg);
    }
    
    .profile-photo {
        max-width: 180px;
    }
    
    .name {
        font-size: var(--font-size-2xl);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .name {
        font-size: var(--font-size-2xl);
    }
    
    .greeting {
        font-size: var(--font-size-lg);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .section-title {
        font-size: var(--font-size-xl);
    }
    
    .highlight-card,
    .experience-card,
    .project-card,
    .achievement-card,
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .hero-social-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }
    
    .social-btn {
        width: 100%;
        min-width: auto;
        justify-content: center;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .social-icon-svg {
        width: 18px;
        height: 18px;
    }
    
    .hero-buttons {
        gap: var(--spacing-sm);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    .skill-tag {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .skill-category-icon {
        font-size: var(--font-size-3xl);
    }
    
    .skill-category-title {
        font-size: var(--font-size-lg);
    }
    
    .tech-tag {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .contact-social {
        flex-direction: column;
        align-items: stretch;
    }
    
    .social-icon {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm);
    }
    
    .navbar {
        padding: var(--spacing-sm) var(--spacing-md);
        height: 60px;
    }
    
    .logo a {
        font-size: var(--font-size-lg);
    }
    
    .nav-menu {
        top: 60px;
    }
    
    .profile-photo {
        max-width: 200px;
        border-width: 3px;
    }
    
    .hero-wrapper {
        gap: var(--spacing-xl);
    }
    
    .project-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .project-date {
        font-size: var(--font-size-xs);
    }
    
    .experience-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}