/* ============================================
   ULTIMATE GLASSMORPHISM PORTFOLIO CSS
   Professional Level - Complete Styling
   ============================================ */

/* CSS Variables for Theme Switching */
:root {
    /* Dark Theme (Default) */
    --primary-color: #00f5ff;
    --primary-dark: #00ccd4;
    --secondary-color: #7b42ff;
    --accent-color: #ff2e63;
    --success-color: #00ff9d;
    --warning-color: #ffb74d;
    
    /* Background Colors */
    --bg-primary: #0a0a16;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #2a2a3e;
    --bg-glass: rgba(30, 31, 46, 0.25);
    
    /* Glass Effects */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --glass-blur: blur(20px);
    --glass-saturation: saturate(180%);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b0b7d6;
    --text-muted: #8a91b3;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00f5ff 0%, #7b42ff 50%, #ff2e63 100%);
    --gradient-secondary: linear-gradient(45deg, #7b42ff 0%, #00f5ff 100%);
    --gradient-glass: linear-gradient(135deg, rgba(0, 245, 255, 0.1), rgba(123, 66, 255, 0.1));
    --gradient-accent: linear-gradient(45deg, #ff2e63, #ff6b9d);
    
    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(0, 245, 255, 0.4);
    --shadow-glow-secondary: 0 0 30px rgba(123, 66, 255, 0.4);
    
    /* Borders */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    --border-radius-full: 9999px;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Playfair Display', serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;
    --font-size-4xl: 4rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Light Theme */
[data-theme="light"] {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #7c3aed;
    --accent-color: #ec4899;
    --success-color: #10b981;
    
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-tertiary: #e2e8f0;
    --bg-glass: rgba(255, 255, 255, 0.7);
    
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(37, 99, 235, 0.1);
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #ec4899 100%);
    --gradient-secondary: linear-gradient(45deg, #7c3aed 0%, #2563eb 100%);
    --gradient-glass: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    
    --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.3);
    --shadow-glow-secondary: 0 0 30px rgba(124, 58, 237, 0.3);
}

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

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

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(123, 66, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 245, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 46, 99, 0.05) 0%, transparent 50%);
}

::selection {
    background: var(--primary-color);
    color: white;
}

::-webkit-scrollbar {
    width: 10px;
}

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

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

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
}

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

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

.section-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    font-family: var(--font-secondary);
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto;
}

/* Glass Card Base */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur) var(--glass-saturation);
    -webkit-backdrop-filter: var(--glass-blur) var(--glass-saturation);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--glass-shadow);
    transition: var(--transition-normal);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: -1;
}

.glass-card:hover::before {
    opacity: 1;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--border-radius-full);
    font-weight: 600;
    font-size: var(--font-size-md);
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-normal);
    z-index: -1;
}

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

.btn-primary {
    background: var(--gradient-secondary);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-full);
    background: var(--gradient-secondary);
    border: none;
    color: white;
    cursor: pointer;
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-glow);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dark-mode-toggle:hover {
    transform: rotate(30deg) scale(1.1);
}

/* Loading Screen */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    transition: opacity var(--transition-slow);
}

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

.loader-spinner {
    width: 80px;
    height: 80px;
    border: 4px solid rgba(0, 245, 255, 0.1);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    margin: 0 auto var(--space-lg);
    animation: spin 1s linear infinite;
}

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

.loader-name {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
}

.loader-status {
    color: var(--text-secondary);
    font-size: var(--font-size-md);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 22, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: var(--z-sticky);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    padding: var(--space-sm) 0;
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.navbar-brand img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    transition: var(--transition-normal);
}

.navbar-brand a:hover img {
    transform: rotate(15deg);
    box-shadow: var(--shadow-glow);
}

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

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius-full);
    transition: var(--transition-normal);
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
    border-radius: var(--border-radius-full);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 80%;
}

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

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.hamburger {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--primary-color);
    position: relative;
    transition: var(--transition-normal);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-normal);
}

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

.hamburger::after {
    bottom: -8px;
}

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

.navbar-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.navbar-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

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

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    background: var(--gradient-secondary);
    color: white;
    padding: var(--space-sm) var(--space-xl);
    border-radius: var(--border-radius-full);
    margin-bottom: var(--space-xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    animation: float 3s ease-in-out infinite;
}

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

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
    line-height: 1.2;
    font-family: var(--font-secondary);
}

.hero-subtitle {
    font-size: clamp(1.25rem, 4vw, 2rem);
    margin-bottom: var(--space-xl);
    color: var(--primary-color);
    min-height: 2.5em;
}

.typewriter {
    display: inline-block;
    position: relative;
}

.typewriter::after {
    content: '|';
    position: absolute;
    right: -5px;
    animation: blink 1s infinite;
}

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

.hero-tagline {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

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

.glass-shape {
    position: absolute;
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: blur(100px);
    -webkit-backdrop-filter: blur(100px);
    border: 1px solid var(--glass-border);
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
    background: radial-gradient(circle at center, rgba(0, 245, 255, 0.2), transparent);
    animation: float 20s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    bottom: 20%;
    right: 15%;
    background: radial-gradient(circle at center, rgba(123, 66, 255, 0.2), transparent);
    animation: float 15s ease-in-out infinite reverse;
}

.shape-3 {
    width: 150px;
    height: 150px;
    top: 60%;
    left: 20%;
    background: radial-gradient(circle at center, rgba(255, 46, 99, 0.15), transparent);
    animation: float 25s ease-in-out infinite;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 20%;
    right: 25%;
    background: radial-gradient(circle at center, rgba(0, 255, 157, 0.1), transparent);
    animation: float 18s ease-in-out infinite reverse;
}

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

.scroll-indicator i {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
    display: block;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

@media (max-width: 992px) {
    .about-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.about-image {
    position: relative;
}

.image-glass {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--space-md);
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
}

.image-glass::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-glass);
    opacity: 0.3;
    z-index: 1;
}

.image-glass img {
    width: 100%;
    border-radius: var(--border-radius-md);
    position: relative;
    z-index: 2;
    transition: var(--transition-normal);
}

.image-glass:hover img {
    transform: scale(1.02);
}

.glass-reflection {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: skewX(-20deg);
    transition: var(--transition-normal);
    z-index: 3;
}

.image-glass:hover .glass-reflection {
    left: 200%;
}

.about-content h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

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

.about-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}

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

.info-label {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.info-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-md);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

@media (max-width: 768px) {
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr;
    }
}

.stat-card {
    padding: var(--space-lg);
    text-align: center;
}

.stat-card i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin-bottom: var(--space-md);
    display: block;
}

.stat-card h4 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

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

/* Skills Section Styles */
.skills-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    position: relative;
}

.skills-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 42px;
    color: #f8fafc;
    margin-bottom: 15px;
    font-weight: 700;
}

.section-header .highlight {
    background: linear-gradient(90deg, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.section-subtitle {
    font-size: 18px;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.skill-category-card {
    background: rgba(30, 41, 59, 0.7);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.skill-category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border-color: rgba(56, 189, 248, 0.3);
}

.category-header {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.category-icon {
    width: 50px;
    height: 50px;
    background: rgba(56, 189, 248, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.category-icon i {
    font-size: 24px;
    color: #38bdf8;
}

.category-title h3 {
    font-size: 22px;
    color: #f8fafc;
    margin-bottom: 5px;
}

.category-title p {
    font-size: 14px;
    color: #94a3b8;
}

.skill-items-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-name {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-name span:first-child {
    font-weight: 500;
    color: #e2e8f0;
    font-size: 16px;
}

.skill-percentage {
    font-weight: 600;
    color: #38bdf8;
    font-size: 16px;
}

.skill-progress {
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #38bdf8, #0ea5e9);
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease;
}

.skills-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.summary-card {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.summary-card:hover {
    transform: translateY(-5px);
    background: rgba(15, 23, 42, 0.7);
    border-color: rgba(56, 189, 248, 0.2);
}

.summary-icon {
    width: 60px;
    height: 60px;
    background: rgba(56, 189, 248, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.summary-icon i {
    font-size: 26px;
    color: #38bdf8;
}

.summary-card h4 {
    font-size: 20px;
    color: #f8fafc;
    margin-bottom: 10px;
}

.summary-card p {
    color: #94a3b8;
    line-height: 1.6;
    font-size: 15px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .skills-section {
        padding: 50px 0;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-category-card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .section-header h2 {
        font-size: 28px;
    }
    
    .skills-summary {
        grid-template-columns: 1fr;
    }
    
    .summary-card {
        padding: 20px;
    }
}
/* Experience Section */
.experience-section {
    position: relative;
    overflow: hidden;
}

.experience-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(123, 66, 255, 0.05) 0%, transparent 70%);
    z-index: -1;
}

/* Timeline Container */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--space-xl) 0;
}

/* Main Timeline Line */
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(
        to bottom,
        transparent,
        var(--primary-color),
        var(--secondary-color),
        var(--primary-color),
        transparent
    );
    background-size: 100% 500%;
    animation: timelineFlow 8s linear infinite;
    z-index: 1;
}

@keyframes timelineFlow {
    0% {
        background-position: 0% 0%;
    }
    100% {
        background-position: 0% 500%;
    }
}

/* Timeline Items Container */
.timeline-items {
    position: relative;
    z-index: 2;
}

/* Individual Timeline Item */
.timeline-item {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--space-3xl);
    width: 100%;
}

/* Alternate sides for timeline items */
.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

/* Timeline Date */
.timeline-date {
    position: absolute;
    top: 0;
    width: 150px;
    padding: var(--space-sm) var(--space-md);
    background: var(--gradient-secondary);
    color: white;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-align: center;
    box-shadow: var(--shadow-glow);
    z-index: 3;
    transform: translateY(-50%);
}

/* Position dates based on item index */
.timeline-item:nth-child(odd) .timeline-date {
    left: calc(50% - 175px);
}

.timeline-item:nth-child(even) .timeline-date {
    right: calc(50% - 175px);
}

/* Timeline Content Card */
.timeline-content {
    width: calc(50% - 60px);
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
    position: relative;
    transition: var(--transition-normal);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 40px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 40px;
}

/* Timeline Content Hover Effects */
.timeline-content:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

/* Timeline Content Heading */
.timeline-content h3 {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.timeline-content h3::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: inline-block;
}

/* Company/Organization */
.timeline-content h4 {
    color: var(--text-secondary);
    font-size: var(--font-size-md);
    margin-bottom: var(--space-lg);
    font-weight: 500;
    padding-left: var(--space-md);
    border-left: 2px solid var(--primary-color);
}

/* Timeline Bullet Points */
.timeline-content ul {
    list-style: none;
    padding: 0;
}

.timeline-content li {
    position: relative;
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: var(--space-lg);
    transition: var(--transition-normal);
}

.timeline-content li:hover {
    color: var(--text-primary);
    transform: translateX(5px);
}

.timeline-content li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: var(--font-size-md);
    transition: var(--transition-normal);
}

.timeline-content li:hover::before {
    transform: scale(1.2);
    color: var(--secondary-color);
}

/* Timeline Connector Line */
.timeline-content::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 40px;
    height: 2px;
    background: var(--gradient-secondary);
    z-index: 1;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -40px;
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -40px;
}

/* Timeline Dot */
.timeline-content::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-glow);
    border: 4px solid var(--bg-primary);
    z-index: 2;
    transition: var(--transition-normal);
}

.timeline-item:nth-child(odd) .timeline-content::after {
    right: -50px;
}

.timeline-item:nth-child(even) .timeline-content::after {
    left: -50px;
}

.timeline-content:hover::after {
    transform: translateY(-50%) scale(1.2);
    box-shadow: 0 0 20px var(--primary-color);
}

/* Mobile Responsive Timeline */
@media (max-width: 768px) {
    /* Center the timeline line on mobile */
    .timeline::before {
        left: 30px;
    }
    
    /* Stack timeline items vertically */
    .timeline-item {
        flex-direction: row !important;
        margin-bottom: var(--space-2xl);
        padding-left: 60px;
    }
    
    /* Adjust content width */
    .timeline-content {
        width: 100%;
        margin: 0 !important;
        padding: var(--space-lg);
    }
    
    /* Position date on left side */
    .timeline-date {
        position: absolute;
        top: 50%;
        left: 0 !important;
        right: auto !important;
        transform: translate(-100%, -50%);
        width: 120px;
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--font-size-xs);
    }
    
    /* Adjust connector line */
    .timeline-content::before {
        left: -30px !important;
        right: auto !important;
        width: 30px;
    }
    
    /* Adjust dot position */
    .timeline-content::after {
        left: -40px !important;
        right: auto !important;
        width: 16px;
        height: 16px;
    }
    
    /* Adjust content positioning */
    .timeline-content h3 {
        font-size: var(--font-size-lg);
    }
    
    .timeline-content h4 {
        font-size: var(--font-size-sm);
    }
}

/* Tablet Responsive */
@media (min-width: 769px) and (max-width: 992px) {
    .timeline::before {
        left: 40%;
    }
    
    .timeline-item:nth-child(odd) .timeline-date {
        left: calc(40% - 150px);
    }
    
    .timeline-item:nth-child(even) .timeline-date {
        right: calc(60% - 150px);
    }
    
    .timeline-content {
        width: calc(60% - 50px);
    }
    
    .timeline-item:nth-child(odd) .timeline-content {
        margin-left: 30px;
    }
    
    .timeline-item:nth-child(even) .timeline-content {
        margin-right: 30px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content::before {
        right: -30px;
    }
    
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -30px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content::after {
        right: -40px;
    }
    
    .timeline-item:nth-child(even) .timeline-content::after {
        left: -40px;
    }
}

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

.timeline-item {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.3s; }
.timeline-item:nth-child(3) { animation-delay: 0.5s; }
.timeline-item:nth-child(4) { animation-delay: 0.7s; }
.timeline-item:nth-child(5) { animation-delay: 0.9s; }

/* Glow effect for selected/current item */
.timeline-item.current .timeline-content {
    border: 2px solid var(--primary-color);
    box-shadow: 
        var(--shadow-glow),
        inset 0 0 20px rgba(0, 245, 255, 0.1);
}

.timeline-item.current .timeline-date {
    background: var(--gradient-primary);
    transform: translateY(-50%) scale(1.05);
}

/* Print styles for timeline */
@media print {
    .timeline::before {
        background: var(--primary-color) !important;
        animation: none !important;
    }
    
    .timeline-content {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
    
    .timeline-content::after {
        background: var(--primary-color) !important;
        box-shadow: none !important;
    }
    
    .timeline-date {
        background: var(--primary-color) !important;
        box-shadow: none !important;
        color: white !important;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    .timeline::before {
        animation: none !important;
        background: var(--primary-color) !important;
    }
    
    .timeline-content,
    .timeline-content:hover,
    .timeline-content li,
    .timeline-content li:hover,
    .timeline-content::after,
    .timeline-content:hover::after {
        transition: none !important;
        transform: none !important;
        animation: none !important;
    }
    
    .timeline-item {
        animation: none !important;
        opacity: 1 !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .timeline::before {
        background: var(--text-primary) !important;
        width: 3px;
    }
    
    .timeline-content {
        border: 2px solid var(--text-primary) !important;
    }
    
    .timeline-content::after {
        border: 3px solid var(--text-primary) !important;
        background: var(--text-primary) !important;
    }
    
    .timeline-date {
        border: 2px solid var(--text-primary) !important;
    }
}

/* Dark/Light mode specific adjustments */
[data-theme="light"] .timeline::before {
    background: linear-gradient(
        to bottom,
        transparent,
        var(--primary-color),
        var(--secondary-color),
        var(--primary-color),
        transparent
    );
}

[data-theme="dark"] .timeline-content::after {
    border-color: var(--bg-primary);
}

[data-theme="light"] .timeline-content::after {
    border-color: var(--bg-primary);
}

/* Hover effects for entire timeline item */
.timeline-item:hover .timeline-date {
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 0 25px var(--primary-color);
}

.timeline-item:hover .timeline-content::after {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 245, 255, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(0, 245, 255, 0);
    }
}
/* ============================================
   PROFESSIONAL PROJECTS SECTION WITH FILTERING
   ============================================ */

/* Projects Section */
.projects-section {
    position: relative;
    background: linear-gradient(180deg, 
        var(--bg-primary) 0%, 
        rgba(10, 10, 22, 0.95) 50%, 
        var(--bg-primary) 100%);
    overflow: hidden;
}

.projects-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 245, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(123, 66, 255, 0.05) 0%, transparent 50%);
    z-index: 1;
}

/* Filter Buttons Container */
.project-filters {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-2xl) auto var(--space-xl);
    padding: var(--space-md);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    max-width: 800px;
    box-shadow: var(--shadow-md);
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.project-filters::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-xl);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-filters:hover::before {
    opacity: 0.3;
}

/* Individual Filter Buttons */
.filter-btn {
    padding: var(--space-sm) var(--space-xl);
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.1), 
        transparent);
    transition: var(--transition-normal);
}

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

.filter-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 245, 255, 0.2);
}

.filter-btn.active {
    background: var(--gradient-secondary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.filter-btn.active:hover {
    background: var(--gradient-secondary);
    color: white;
    transform: translateY(-2px) scale(1.05);
}

/* Project Grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-xl);
    margin: var(--space-2xl) 0;
    position: relative;
    z-index: 2;
}

/* Project Card Styling */
.project-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    opacity: 1;
    transform: translateY(0);
    transition: all var(--transition-normal);
}

/* Hidden state for filtered cards */
.project-card.hidden {
    opacity: 0;
    transform: translateY(20px);
    height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
    pointer-events: none;
}

/* Visible state for filtered cards */
.project-card.visible {
    opacity: 1;
    transform: translateY(0);
    height: auto;
    animation: fadeInUp 0.6s ease-out forwards;
}

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

/* Project Image */
.project-image {
    position: relative;
    height: 220px;
    overflow: hidden;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

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

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

/* Project Overlay */
.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(0, 245, 255, 0.9), 
        rgba(123, 66, 255, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

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

.project-link {
    width: 60px;
    height: 60px;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    text-decoration: none;
    font-size: var(--font-size-lg);
    transition: all var(--transition-normal);
}

.project-link:hover {
    background: white;
    color: var(--primary-color);
    transform: scale(1.1) rotate(10deg);
    box-shadow: var(--shadow-glow);
}

/* Project Content */
.project-content {
    padding: var(--space-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.project-content h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    line-height: 1.4;
    font-weight: 600;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    flex-grow: 1;
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

/* Project Tech Tags */
.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.project-tech span {
    background: rgba(0, 245, 255, 0.1);
    color: var(--primary-color);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border: 1px solid rgba(0, 245, 255, 0.2);
    transition: var(--transition-normal);
}

.project-card:hover .project-tech span {
    background: rgba(0, 245, 255, 0.2);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Project Links */
.project-links {
    display: flex;
    gap: var(--space-md);
    margin-top: auto;
}

.project-links .btn {
    flex: 1;
    justify-content: center;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
    min-height: 44px;
}

/* Projects Statistics */
.projects-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-3xl);
}

.stat-item {
    padding: var(--space-xl);
    text-align: center;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    transition: var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.stat-item i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin-bottom: var(--space-md);
    display: block;
}

.stat-item h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-xs);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

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

/* Category Badges for Projects */
.category-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
    opacity: 0.9;
}

/* No Projects Message */
.no-projects-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-3xl);
    background: var(--bg-glass);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--glass-border);
    margin: var(--space-2xl) 0;
}

.no-projects-message i {
    font-size: var(--font-size-3xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    display: block;
}

.no-projects-message h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.no-projects-message p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* Active Filter Counter */
.filter-counter {
    display: inline-block;
    margin-left: var(--space-sm);
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .project-filters {
        flex-direction: column;
        padding: var(--space-lg);
    }
    
    .filter-btn {
        width: 100%;
        text-align: center;
    }
    
    .project-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .project-image {
        height: 200px;
    }
    
    .projects-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .project-filters {
        gap: var(--space-sm);
        padding: var(--space-md);
    }
    
    .filter-btn {
        padding: var(--space-sm) var(--space-lg);
        font-size: var(--font-size-xs);
    }
    
    .project-links {
        flex-direction: column;
    }
    
    .projects-stats {
        grid-template-columns: 1fr;
    }
}

/* Animation for filter change */
@keyframes filterChange {
    0% {
        opacity: 0.5;
        transform: scale(0.95);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.project-card.visible {
    animation: filterChange 0.4s ease-out;
}

/* Loading animation for projects */
.loading-projects {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-3xl);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(0, 245, 255, 0.2);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    margin: 0 auto var(--space-lg);
    animation: spin 1s linear infinite;
}

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

/* Print styles */
@media print {
    .project-filters {
        display: none;
    }
    
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .project-links {
        display: none;
    }
    
    .projects-stats {
        display: none;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .filter-btn {
        border: 2px solid currentColor;
    }
    
    .filter-btn.active {
        border: 2px solid var(--primary-color);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .project-card,
    .filter-btn,
    .stat-item,
    .project-image img,
    .project-link,
    .project-tech span {
        transition: none !important;
        animation: none !important;
    }
    
    .project-card.hidden {
        display: none;
    }
}

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

.certificate-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.certificate-image {
    height: 200px;
    overflow: hidden;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.certificate-card:hover .certificate-image img {
    transform: scale(1.05);
}

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

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

.certificate-issuer {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    font-size: var(--font-size-sm);
}

.certificate-date {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-sm);
}

.certificate-content .btn {
    margin-top: auto;
    align-self: flex-start;
}

/* ============================================
   CONTACT SECTION - COMPLETE STYLING
   ============================================ */

.contact-section {
    position: relative;
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, 
        rgba(10, 10, 22, 0.95) 0%, 
        rgba(20, 20, 35, 0.98) 50%, 
        rgba(10, 10, 22, 0.95) 100%);
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(0, 245, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(123, 66, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 46, 99, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.contact-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--primary-color), 
        var(--secondary-color), 
        var(--primary-color), 
        transparent);
    opacity: 0.5;
}

.contact-section .container {
    position: relative;
    z-index: 2;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

@media (max-width: 992px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
}

/* Contact Info Side */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    padding: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(0, 245, 255, 0.1), 
        transparent);
    transition: left 0.6s ease;
}

.contact-item:hover::before {
    left: 100%;
}

.contact-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.contact-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    position: relative;
    overflow: hidden;
}

.contact-icon::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.2) 50%, transparent 70%);
    animation: shine 3s infinite linear;
}

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

.contact-details {
    flex: 1;
    min-width: 0;
}

.contact-details h4 {
    font-size: var(--font-size-md);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

.contact-details a,
.contact-details span {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-normal);
    display: block;
    word-break: break-word;
}

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

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

.contact-social h4 {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    font-weight: 600;
}

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

.social-link {
    width: 50px;
    height: 50px;
    background: rgba(0, 245, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    text-decoration: none;
    font-size: var(--font-size-lg);
    transition: all var(--transition-normal);
    border: 1px solid rgba(0, 245, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.social-link:hover::before {
    transform: translateX(100%);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px) rotate(5deg);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary-color);
}

.social-link:nth-child(2):hover {
    background: #333;
    border-color: #333;
}

.social-link:nth-child(3):hover {
    background: #f89f1b;
    border-color: #f89f1b;
}

.social-link:nth-child(4):hover {
    background: linear-gradient(45deg, #405DE6, #5851DB, #833AB4, #C13584, #E1306C, #FD1D1D);
    border-color: transparent;
}

/* Contact Form Side */
.contact-form {
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    animation: borderFlow 3s linear infinite;
}

@keyframes borderFlow {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-lg) var(--space-lg) var(--space-lg) 50px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: var(--font-size-md);
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    resize: vertical;
}

.form-group textarea {
    min-height: 150px;
    padding-top: var(--space-lg);
    line-height: 1.6;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1);
}

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

.form-group::before {
    content: '';
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    z-index: 2;
    pointer-events: none;
}

.form-group:nth-child(1)::before { content: '👤'; }
.form-group:nth-child(2)::before { content: '✉️'; }
.form-group:nth-child(3)::before { content: '📝'; }
.form-group:nth-child(4)::before { content: '💬'; top: 28px; transform: none; }

.form-group input:focus + .form-group::before,
.form-group textarea:focus + .form-group::before {
    animation: iconPulse 0.5s ease;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.contact-form button[type="submit"] {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-top: var(--space-md);
    position: relative;
    overflow: hidden;
    border: none;
    background: var(--gradient-primary);
    color: white;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.contact-form button[type="submit"]::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 ease;
}

.contact-form button[type="submit"]:hover::before {
    left: 100%;
}

.contact-form button[type="submit"]:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
    background: var(--gradient-secondary);
}

.contact-form button[type="submit"]:active {
    transform: translateY(-1px);
}

/* Form Validation Styles */
.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: var(--accent-color);
    background: rgba(255, 46, 99, 0.05);
}

.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
    border-color: var(--success-color);
    background: rgba(0, 255, 157, 0.05);
}

/* Success/Error Messages */
.form-message {
    margin-top: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    text-align: center;
    display: none;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-message.success {
    display: block;
    background: rgba(0, 255, 157, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(0, 255, 157, 0.2);
}

.form-message.error {
    display: block;
    background: rgba(255, 46, 99, 0.1);
    color: var(--accent-color);
    border: 1px solid rgba(255, 46, 99, 0.2);
}

/* Loading State */
.contact-form.loading button[type="submit"] {
    pointer-events: none;
    opacity: 0.8;
}

.contact-form.loading button[type="submit"]::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: var(--space-sm);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .contact-section {
        padding: var(--space-2xl) 0;
    }
    
    .contact-item {
        padding: var(--space-lg);
        gap: var(--space-md);
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-lg);
    }
    
    .contact-form {
        padding: var(--space-xl);
    }
    
    .form-group input,
    .form-group textarea {
        padding: var(--space-md) var(--space-md) var(--space-md) 45px;
        font-size: var(--font-size-sm);
    }
    
    .social-links {
        gap: var(--space-md);
    }
    
    .social-link {
        width: 45px;
        height: 45px;
        font-size: var(--font-size-md);
    }
}

@media (max-width: 480px) {
    .contact-container {
        gap: var(--space-lg);
    }
    
    .contact-info {
        gap: var(--space-md);
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }
    
    .contact-details {
        text-align: center;
    }
    
    .social-links {
        gap: var(--space-sm);
    }
    
    .social-link {
        width: 40px;
        height: 40px;
    }
    
    .contact-form {
        padding: var(--space-lg);
    }
}

/* Hover Effects for Mobile */
@media (hover: hover) and (pointer: fine) {
    .contact-item:hover .contact-icon {
        transform: scale(1.1) rotate(5deg);
    }
    
    .social-link:hover {
        transform: translateY(-5px) scale(1.1);
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .contact-item:active {
        transform: scale(0.98);
    }
    
    .social-link:active {
        transform: scale(0.95);
    }
    
    .contact-form button[type="submit"]:active {
        transform: scale(0.98);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .contact-item::before,
    .social-link::before,
    .contact-form button[type="submit"]::before,
    .contact-icon::before,
    .contact-form::before {
        animation: none;
        display: none;
    }
    
    .contact-item:hover,
    .social-link:hover,
    .contact-form button[type="submit"]:hover {
        transform: none;
    }
    
    .form-message {
        animation: none;
    }
    
    .contact-form.loading button[type="submit"]::after {
        animation: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .contact-item,
    .contact-social,
    .contact-form {
        border: 2px solid var(--text-primary);
    }
    
    .contact-icon {
        border: 2px solid var(--text-primary);
    }
    
    .social-link {
        border: 2px solid var(--text-primary);
    }
    
    .form-group input,
    .form-group textarea {
        border: 2px solid var(--text-primary);
    }
    
    .contact-form button[type="submit"] {
        border: 2px solid var(--text-primary);
    }
}

/* Dark Mode Specific */
[data-theme="dark"] .contact-section {
    background: linear-gradient(180deg, 
        rgba(5, 5, 15, 0.95) 0%, 
        rgba(10, 10, 25, 0.98) 50%, 
        rgba(5, 5, 15, 0.95) 100%);
}

[data-theme="dark"] .contact-item,
[data-theme="dark"] .contact-social,
[data-theme="dark"] .contact-form {
    background: rgba(15, 15, 30, 0.8);
}

/* Light Mode Specific */
[data-theme="light"] .contact-section {
    background: linear-gradient(180deg, 
        rgba(240, 245, 255, 0.95) 0%, 
        rgba(230, 235, 245, 0.98) 50%, 
        rgba(240, 245, 255, 0.95) 100%);
}

[data-theme="light"] .contact-section::before {
    background: 
        radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(236, 72, 153, 0.05) 0%, transparent 70%);
}

[data-theme="light"] .contact-item,
[data-theme="light"] .contact-social,
[data-theme="light"] .contact-form {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(37, 99, 235, 0.1);
}

[data-theme="light"] .social-link {
    background: rgba(37, 99, 235, 0.1);
    border-color: rgba(37, 99, 235, 0.2);
}

[data-theme="light"] .form-group input,
[data-theme="light"] .form-group textarea {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(37, 99, 235, 0.1);
}

[data-theme="light"] .contact-form button[type="submit"] {
    background: var(--gradient-primary-light);
}

/* Floating Animation for Contact Items */
@keyframes floatContact {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.contact-item:nth-child(1) { animation: floatContact 3s ease-in-out infinite; }
.contact-item:nth-child(2) { animation: floatContact 3s ease-in-out infinite 0.5s; }
.contact-item:nth-child(3) { animation: floatContact 3s ease-in-out infinite 1s; }

/* Form Focus Effects */
.form-group input:focus,
.form-group textarea:focus {
    animation: inputFocus 0.3s ease;
}

@keyframes inputFocus {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.01);
    }
    100% {
        transform: scale(1);
    }
}

/* Success Animation for Form Submission */
.contact-form.submitted {
    animation: formSuccess 1s ease;
}

@keyframes formSuccess {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
    100% {
        transform: scale(1);
    }
}

/* Gradient Text Effect for Headings */
.contact-section .section-header h2 .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
}

.contact-section .section-header h2 .highlight::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s ease;
}

.contact-section .section-header h2:hover .highlight::after {
    transform: scaleX(1);
}

/* Section Subtitle Animation */
.contact-section .section-subtitle {
    position: relative;
    display: inline-block;
}

.contact-section .section-subtitle::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
}

/* Social Icons Custom Colors */
.social-link[href*="linkedin"]:hover { background: #0077B5; }
.social-link[href*="github"]:hover { background: #333; }
.social-link[href*="leetcode"]:hover { background: #f89f1b; }
.social-link[href*="instagram"]:hover { 
    background: linear-gradient(45deg, 
        #405DE6, #5851DB, #833AB4, 
        #C13584, #E1306C, #FD1D1D); 
}

/* Form Input Icons with Font Awesome */
.form-group {
    position: relative;
}

.form-group i {
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    z-index: 2;
    transition: var(--transition-normal);
}

.form-group:nth-child(4) i {
    top: 28px;
    transform: none;
}

.form-group input:focus ~ i,
.form-group textarea:focus ~ i {
    color: var(--secondary-color);
    animation: iconBounce 0.5s ease;
}

@keyframes iconBounce {
    0%, 100% { transform: translateY(-50%) scale(1); }
    50% { transform: translateY(-50%) scale(1.2); }
}

/* Form Group Focus Label */
.form-group label {
    position: absolute;
    left: 50px;
    top: var(--space-lg);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    pointer-events: none;
    transition: var(--transition-normal);
    transform-origin: left;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    transform: translateY(-25px) scale(0.85);
    color: var(--primary-color);
}

/* Custom Scrollbar for Textarea */
.form-group textarea::-webkit-scrollbar {
    width: 8px;
}

.form-group textarea::-webkit-scrollbar-track {
    background: rgba(0, 245, 255, 0.1);
    border-radius: var(--border-radius-full);
}

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

.form-group textarea::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Submit Button Loading Animation */
.contact-form button[type="submit"] .btn-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: var(--space-sm);
}

.contact-form.loading button[type="submit"] .btn-spinner {
    display: inline-block;
}

.contact-form.loading button[type="submit"] i {
    display: none;
}

/* Form Submission Confetti Effect */
@keyframes confettiFall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--gradient-primary);
    border-radius: 50%;
    animation: confettiFall 2s linear forwards;
    pointer-events: none;
    z-index: 1000;
}

/* Contact Section Background Particles */
.contact-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: particleFloat 20s infinite linear;
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(100px);
        opacity: 0;
    }
}

/* Responsive Typography */
@media (max-width: 768px) {
    .contact-section .section-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    .contact-section .section-subtitle {
        font-size: var(--font-size-md);
    }
    
    .contact-details h4 {
        font-size: var(--font-size-sm);
    }
    
    .contact-details a,
    .contact-details span {
        font-size: var(--font-size-xs);
    }
}

/* Print Styles */
@media print {
    .contact-section {
        background: white !important;
        color: black !important;
    }
    
    .contact-item,
    .contact-social,
    .contact-form {
        border: 1px solid #ddd !important;
        background: white !important;
        box-shadow: none !important;
    }
    
    .contact-form {
        display: none;
    }
    
    .social-links {
        display: none;
    }
    
    a {
        color: black !important;
        text-decoration: underline;
    }
}

/* Accessibility: Focus Visible */
.contact-item:focus-visible,
.social-link:focus-visible,
.contact-form button[type="submit"]:focus-visible,
.form-group input:focus-visible,
.form-group textarea:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
    border-radius: var(--border-radius-sm);
}

/* Smooth Scroll to Contact Section */
html:has(:target:last-of-type) {
    scroll-behavior: smooth;
}

/* Contact Section Entry Animation */
@keyframes contactSlideIn {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.contact-section {
    animation: contactSlideIn 0.8s ease-out;
}

/* Gradient Border Animation for Form */
.contact-form {
    background: linear-gradient(var(--bg-glass), var(--bg-glass)) padding-box,
                var(--gradient-primary) border-box;
    border: 2px solid transparent;
    animation: borderRotate 10s linear infinite;
}

@keyframes borderRotate {
    0% {
        background: linear-gradient(var(--bg-glass), var(--bg-glass)) padding-box,
                    var(--gradient-primary) border-box;
    }
    33% {
        background: linear-gradient(var(--bg-glass), var(--bg-glass)) padding-box,
                    var(--gradient-secondary) border-box;
    }
    66% {
        background: linear-gradient(var(--bg-glass), var(--bg-glass)) padding-box,
                    var(--gradient-accent) border-box;
    }
    100% {
        background: linear-gradient(var(--bg-glass), var(--bg-glass)) padding-box,
                    var(--gradient-primary) border-box;
    }
}

/* Contact Info Hover Glow Effect */
.contact-item:hover .contact-icon {
    box-shadow: 
        0 0 20px rgba(0, 245, 255, 0.5),
        0 0 40px rgba(123, 66, 255, 0.3),
        0 0 60px rgba(255, 46, 99, 0.1);
}

/* Form Input Glow on Valid */
.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
    box-shadow: 
        inset 0 0 0 1px var(--success-color),
        0 0 10px rgba(0, 255, 157, 0.3);
}

/* Final Touch: Section Divider */
.contact-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
    box-shadow: 0 0 20px var(--primary-color);
}
/* Footer */
.footer {
    background: linear-gradient(180deg, var(--bg-primary) 0%, #050510 100%);
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gradient-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

.footer-brand {
    padding: var(--space-xl);
}

.footer-brand a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.footer-brand img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
}

.footer-brand h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xs);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.footer-quote {
    color: var(--text-secondary);
    font-style: italic;
    margin-top: var(--space-lg);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.footer-links,
.footer-services,
.footer-contact {
    padding: var(--space-xl);
}

.footer-links h4,
.footer-services h4,
.footer-contact h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.footer-links ul,
.footer-services ul {
    list-style: none;
}

.footer-links li,
.footer-services li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-normal);
    font-size: var(--font-size-sm);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: var(--space-sm);
}

.footer-services li {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    position: relative;
    padding-left: var(--space-md);
}

.footer-services li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: var(--font-size-sm);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.footer-contact i {
    color: var(--primary-color);
    width: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.footer-bottom p {
    margin-bottom: var(--space-sm);
}

.footer-bottom i {
    color: var(--accent-color);
    margin: 0 var(--space-xs);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-secondary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-glow);
}

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

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--bg-primary);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-xl);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--glass-border);
        z-index: var(--z-sticky);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: var(--space-md);
        text-align: center;
    }
    
    .hero-title {
        font-size: clamp(2rem, 6vw, 3rem);
    }
    
    .hero-subtitle {
        font-size: clamp(1rem, 4vw, 1.5rem);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .section-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-md);
    }
    
    .project-filters {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: var(--space-md);
        -webkit-overflow-scrolling: touch;
    }
    
    .filter-btn {
        flex-shrink: 0;
    }
    
    .project-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }
    
    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-lg);
    }
    
    .social-links {
        justify-content: center;
    }
    
    .dark-mode-toggle {
        top: var(--space-md);
        right: var(--space-md);
        width: 45px;
        height: 45px;
    }
    
    .back-to-top {
        bottom: var(--space-lg);
        right: var(--space-lg);
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .section {
        padding: var(--space-2xl) 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-badge {
        font-size: var(--font-size-xs);
        padding: var(--space-xs) var(--space-lg);
    }
    
    .about-info {
        grid-template-columns: 1fr;
    }
    
    .projects-stats {
        grid-template-columns: 1fr;
    }
    
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .project-links {
        flex-direction: column;
    }
    
    .project-links .btn {
        width: 100%;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .dark-mode-toggle,
    .hero-cta,
    .project-links,
    .contact-form,
    .footer,
    .back-to-top,
    .scroll-indicator {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-2xl) 0;
    }
    
    .section {
        page-break-inside: avoid;
        padding: var(--space-xl) 0;
    }
    
    .project-grid {
        grid-template-columns: 1fr !important;
    }
    
    .glass-card {
        border: 1px solid #ddd;
        box-shadow: none;
        backdrop-filter: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .glass-card {
        border: 2px solid var(--text-primary);
    }
    
    .filter-btn {
        border: 2px solid currentColor;
    }
    
    .btn-secondary {
        border-width: 2px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .loader-spinner {
        animation: none;
        border: 4px solid var(--primary-color);
    }
    
    .typewriter::after {
        animation: none;
        opacity: 0;
    }
    
    .scroll-indicator {
        animation: none;
    }
    
    .hero-badge,
    .glass-shape {
        animation: none;
    }
    
    .level-bar::after {
        animation: none;
        display: none;
    }
    
    .back-to-top:hover,
    .btn:hover,
    .filter-btn:hover,
    .glass-card:hover,
    .nav-link:hover,
    .project-card:hover,
    .social-link:hover {
        transform: none !important;
    }
}

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

/* Focus Styles */
:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
    border-radius: var(--border-radius-sm);
}

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

.fade-in-up {
    animation: fadeInUp 0.8s var(--transition-normal) forwards;
}