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

html {
    scroll-behavior: smooth;
}

/* CSS Variables for Theme */
:root {
    /* Dark Theme (Default) */
    --bg-primary: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    --bg-secondary: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --bg-card: rgba(15, 23, 42, 0.8);
    --bg-card-hover: rgba(15, 23, 42, 0.9);
    --text-primary: #e2e8f0;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-secondary: #10b981;
    --accent-tertiary: #8b5cf6;
    --border-color: rgba(59, 130, 246, 0.2);
    --border-hover: rgba(59, 130, 246, 0.4);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --shadow-glow: rgba(59, 130, 246, 0.3);
}

[data-theme="light"] {
    /* Light Theme */
    --bg-primary: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
    --bg-secondary: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --text-primary: #1e293b;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --accent-primary: #3b82f6;
    --accent-secondary: #10b981;
    --accent-tertiary: #8b5cf6;
    --border-color: rgba(59, 130, 246, 0.2);
    --border-hover: rgba(59, 130, 246, 0.4);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-glow: rgba(59, 130, 246, 0.2);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    background-attachment: fixed;
    min-height: 100vh;
    transition: all 0.3s ease;
}

/* Theme-specific background patterns */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
    transition: all 0.3s ease;
}

[data-theme="light"] body::before {
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px var(--shadow-color);
}

/* Dark theme specific navbar styling */
[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.4);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    margin-right: 2rem;
}

.theme-toggle-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
    font-size: 1.2rem;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.theme-toggle-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-glow);
}

.theme-toggle-btn i {
    transition: all 0.3s ease;
}

.theme-toggle-btn:hover i {
    transform: rotate(180deg);
}

.nav-logo h2 {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
    font-size: 1.5rem;
    text-shadow: 0 0 20px var(--shadow-glow);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-shadow: 0 0 10px var(--shadow-glow);
}

.nav-link:hover {
    color: var(--accent-primary);
    background: rgba(59, 130, 246, 0.15);
    box-shadow: 0 0 20px var(--shadow-glow);
    transform: translateY(-1px);
}

/* Dark theme specific navigation styling */
[data-theme="dark"] .nav-link {
    color: #ffffff;
    font-weight: 700;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

[data-theme="dark"] .nav-link:hover {
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.2);
    box-shadow: 0 0 25px rgba(59, 130, 246, 0.4);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width 0.3s ease;
    box-shadow: 0 0 10px var(--shadow-glow);
}

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

/* Active navigation link styling */
.nav-link.active {
    color: var(--accent-primary);
    background: rgba(59, 130, 246, 0.1);
    box-shadow: 0 0 15px var(--shadow-glow);
}

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

/* Dark theme specific active state */
[data-theme="dark"] .nav-link.active {
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.15);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

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

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Dark theme specific hamburger styling */
[data-theme="dark"] .bar {
    background-color: #ffffff;
    box-shadow: 0 0 5px rgba(255, 255, 255, 0.3);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    color: var(--text-primary);
    padding-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    color: var(--text-primary);
    text-shadow: 0 0 30px var(--shadow-glow);
}

/* Dark theme specific gradient for hero title */
[data-theme="dark"] .hero-title {
    background: linear-gradient(135deg, #ffffff, #e2e8f0);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Light theme specific gradient for hero title */
[data-theme="light"] .hero-title {
    background: linear-gradient(135deg, #1e293b, #334155);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.highlight {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px var(--shadow-glow);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
    font-weight: 600;
    text-shadow: 0 0 15px var(--shadow-glow);
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8, #1e40af);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #3b82f6;
    border: 2px solid #3b82f6;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--accent-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.social-link:hover {
    background: linear-gradient(135deg, var(--accent-primary), #1d4ed8);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-glow);
}

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

.profile-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    padding: 3rem;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    position: relative;
    transition: all 0.4s ease;
}

.profile-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.profile-image {
    position: relative;
    display: inline-block;
}

.profile-image img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid var(--accent-primary);
    box-shadow: 0 0 50px rgba(59, 130, 246, 0.4);
    transition: all 0.4s ease;
    position: relative;
    z-index: 2;
}

.profile-image::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--accent-primary), #3b82f6, #8b5cf6, var(--accent-secondary));
    z-index: 1;
    animation: rotate 3s linear infinite;
}

.profile-image::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    background: var(--bg-card);
    z-index: 1;
}

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

.profile-image:hover img {
    transform: scale(1.05);
    box-shadow: 0 0 80px rgba(59, 130, 246, 0.6);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-shadow: 0 0 20px var(--shadow-glow);
}

/* Dark theme specific gradient for section titles */
[data-theme="dark"] .section-title {
    background: linear-gradient(135deg, #ffffff, #e2e8f0);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Light theme specific gradient for section titles */
[data-theme="light"] .section-title {
    background: linear-gradient(135deg, #1e293b, #334155);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--bg-secondary);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
    position: relative;
    z-index: 1;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.skills h4 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.skill-category {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), #3b82f6, #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.skill-category:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-primary);
}

.skill-category h5 {
    color: var(--accent-primary);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.8rem;
    position: relative;
    transition: all 0.3s ease;
}

.skill-category:hover h5 {
    color: #3b82f6;
    border-bottom-color: #3b82f6;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    background: linear-gradient(135deg, var(--accent-primary), #3b82f6);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.skill-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

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

.skill-tag:hover {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    border-color: #8b5cf6;
}

.skill-tag:active {
    transform: translateY(-1px) scale(1.02);
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.stat-item h3 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Projects Section */
.projects {
    padding: 6rem 0;
    background: var(--bg-primary);
    position: relative;
}

.projects::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 70%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-glow);
    border-color: var(--border-hover);
}

.project-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.project-year {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.project-link:hover {
    color: var(--text-primary);
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--border-hover);
}

/* Timeline Section */
.timeline {
    padding: 6rem 0;
    background: var(--bg-secondary);
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

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

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #3b82f6, #10b981, #8b5cf6);
    transform: translateX(-50%);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 50%;
    padding-right: 2rem;
    text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 50%;
    padding-left: 2rem;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    top: 0;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #3b82f6, #10b981);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 1;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
}

.timeline-content {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    width: 45%;
    position: relative;
    z-index: 1;
}

.timeline-date {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline-content p strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Certifications Section */
.certifications {
    padding: 6rem 0;
    background: var(--bg-secondary);
    position: relative;
}

.certifications::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    position: relative;
    z-index: 1;
}

.certification-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.certification-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-glow);
    border-color: var(--border-hover);
}

.certification-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 8px 25px var(--shadow-glow);
    flex-shrink: 0;
}

.certification-content {
    flex: 1;
}

.certification-content h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.certification-issuer {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.certification-date {
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
}

/* Extracurriculars Section */
.extracurriculars {
    padding: 6rem 0;
    background: var(--bg-primary);
    position: relative;
}

.extracurriculars::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 30%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.extracurriculars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.extracurricular-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.extracurricular-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px var(--shadow-glow);
    border-color: var(--border-hover);
}

.extracurricular-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
    box-shadow: 0 8px 25px var(--shadow-glow);
}

.extracurricular-card h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.extracurricular-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--bg-secondary);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
    position: relative;
    z-index: 1;
}

.contact-info h3 {
    color: var(--text-primary);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.contact-item h4 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
}

.resume-actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
}

.contact-form {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-card);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 15px var(--shadow-glow);
}

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

.social-section {
    text-align: center;
}

.social-section h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.social-links-large {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.social-link-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.social-link-large:hover {
    color: var(--accent-primary);
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--border-hover);
    box-shadow: 0 8px 25px var(--shadow-glow);
}

.social-link-large i {
    font-size: 2rem;
}

.social-link-large span {
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.footer-content p {
    margin-bottom: 0.5rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
}

.modal-content {
    background: var(--bg-card);
    margin: 5% auto;
    padding: 20px;
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    position: relative;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.resume-container {
    position: relative;
    width: 100%;
    height: 600px;
}

.resume-container iframe {
    border: none;
    border-radius: 8px;
    width: 100%;
    height: 100%;
}

#resumeFallback {
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

#resumeFallback h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

#resumeFallback p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.close {
    color: var(--text-muted);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    top: 10px;
    right: 20px;
    transition: color 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

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

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .profile-image img {
        width: 250px;
        height: 250px;
    }

    .profile-card {
        padding: 2rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .timeline-container::before {
        left: 20px;
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 50px;
        margin-right: 0;
        padding-left: 2rem;
        padding-right: 0;
        text-align: left;
        width: calc(100% - 50px);
    }

    .timeline-marker {
        left: 20px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .resume-actions {
        flex-direction: column;
    }

    .social-links-large {
        gap: 1rem;
    }
}

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

    .section-title {
        font-size: 2rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .extracurriculars-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-categories {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .skill-category {
        padding: 1rem;
    }
    
    .certifications-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .certification-card {
        padding: 1rem;
        flex-direction: column;
        text-align: center;
    }
    
    .certification-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}