/* ==========================================
   ROOT VARIABLES & RESET
   ========================================== */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Backgrounds */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    
    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ==========================================
   UTILITIES
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-line {
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 0 auto var(--spacing-md);
    border-radius: 2px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   NAVBAR
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-md);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-base);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-selector {
    position: relative;
}

.theme-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid rgba(99, 102, 241, 0.4);
    border-radius: 12px;
    padding: 8px;
    margin-top: 8px;
    min-width: 140px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.theme-selector:hover .theme-dropdown,
.theme-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: #e2e8f0;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    font-size: 14px;
    font-weight: 500;
}

.theme-option:hover {
    background: rgba(99, 102, 241, 0.15);
    transform: translateX(2px);
}

.theme-preview {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.theme-preview.blue {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.theme-preview.purple {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.theme-preview.green {
    background: linear-gradient(135deg, #10b981, #059669);
}

.theme-preview.orange {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.theme-toggle,
.download-cv {
    width: 40px;
    height: 40px;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

.theme-toggle:hover,
.download-cv:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.theme-toggle i {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #10b981, #f59e0b);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
    font-size: 1.1rem;
    transition: all var(--transition-base);
    display: inline-block;
}

/* Force palette icon */
.theme-toggle i.fa-palette {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #10b981, #f59e0b);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
}

.download-cv i {
    font-size: 1rem;
    transition: all var(--transition-base);
}

.theme-toggle:hover i,
.download-cv:hover i {
    transform: scale(1.1);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

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

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

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary);
    bottom: -10%;
    right: -10%;
    animation-delay: 5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    33% {
        transform: translate(50px, -50px);
    }
    66% {
        transform: translate(-50px, 50px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    animation: fadeInUp 1s ease-out;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--primary-light);
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-badge i {
    color: var(--warning);
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.highlight {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    animation: fadeInUp 1s ease-out 0.8s backwards;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    animation: fadeInUp 1s ease-out 1s backwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out 1.2s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

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

/* Override with theme-specific gradients */
[data-theme="blue"] .btn-primary {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
}

[data-theme="purple"] .btn-primary {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
}

[data-theme="green"] .btn-primary {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
}

[data-theme="orange"] .btn-primary {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
}

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

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.hero-contact {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 1.4s backwards;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

.contact-item:focus {
    outline: none;
    color: var(--primary-light);
}

.contact-item i {
    color: var(--primary);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: none; /* Hidden - removed bouncing animation */
}

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

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary);
    border-radius: 20px;
    position: relative;
}

.mouse::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        top: 10px;
        opacity: 1;
    }
    100% {
        top: 30px;
        opacity: 0;
    }
}

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

/* ==========================================
   SUMMARY SECTION
   ========================================== */
.summary {
    background: var(--bg-secondary);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.summary-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

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

.summary-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.summary-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.summary-card p {
    color: var(--text-muted);
}

/* ==========================================
   TIMELINE (Experience)
   ========================================== */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-md);
}

.timeline-dot {
    position: absolute;
    left: -2rem;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border: 4px solid var(--bg-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.timeline-content {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    transform: translateX(10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

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

.timeline-header h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.timeline-header h4 {
    font-size: 1.125rem;
    color: var(--primary-light);
    font-weight: 500;
}

.timeline-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    white-space: nowrap;
}

.timeline-location {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.timeline-achievements {
    list-style: none;
    margin-bottom: var(--spacing-sm);
}

.timeline-achievements li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.timeline-achievements li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

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

.experience-section h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.experience-section:first-of-type h5 {
    margin-top: 0;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--primary-light);
}

/* ==========================================
   EDUCATION SECTION
   ========================================== */
.education-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

.education-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

.education-header {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.education-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
}

.education-info h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.education-info h4 {
    font-size: 1.25rem;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
}

.education-date,
.education-location {
    color: var(--text-muted);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.education-highlights {
    margin-bottom: var(--spacing-md);
}

.highlight-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(239, 68, 68, 0.1));
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.highlight-badge.valedictorian {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(234, 179, 8, 0.1));
    border-color: rgba(245, 158, 11, 0.5);
}

.highlight-badge i {
    font-size: 2rem;
    color: var(--warning);
}

.highlight-badge strong {
    color: var(--warning);
    font-size: 1.25rem;
    display: block;
    margin-bottom: 0.25rem;
}

.highlight-badge p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.education-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.stat-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
}

.stat-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.education-achievements {
    list-style: none;
}

.education-achievements li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.education-achievements i {
    color: var(--success);
    margin-top: 0.25rem;
}

/* ==========================================
   PUBLICATIONS SECTION
   ========================================== */
.publications {
    background: var(--bg-secondary);
}

.publication-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 0.875rem;
    font-weight: 500;
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary-light);
}

.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

/* Override with theme-specific gradients */
[data-theme="blue"] .filter-btn.active {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
}

[data-theme="purple"] .filter-btn.active {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
}

[data-theme="green"] .filter-btn.active {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
}

[data-theme="orange"] .filter-btn.active {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
}

.publications-grid {
    display: grid;
    gap: var(--spacing-md);
}

.publication-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.publication-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

/* Override with theme-specific gradients */
[data-theme="blue"] .publication-card::before {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
}

[data-theme="purple"] .publication-card::before {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
}

[data-theme="green"] .publication-card::before {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
}

[data-theme="orange"] .publication-card::before {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
}

.publication-card:hover {
    transform: translateX(10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

.publication-card:hover::before {
    transform: scaleY(1);
}

.publication-card.hidden {
    display: none;
}

.publication-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.publication-badge.q1 {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.publication-badge.q2 {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}

.publication-badge.q4 {
    background: linear-gradient(135deg, #a855f7, #9333ea);
    color: white;
}

.publication-badge.conference {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.publication-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.publication-status.submitted {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--warning);
}

.publication-status.published {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.publication-status.revision {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #3b82f6;
}

.publication-status.ongoing {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: var(--secondary);
}

.publication-status.accepted {
    background: rgba(34, 197, 94, 0.1) !important;
    border: 1px solid rgba(34, 197, 94, 0.3) !important;
    color: #22c55e !important;
}

.publication-status.under-review {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--warning);
}

.publication-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.publication-authors {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.publication-authors strong {
    color: var(--primary-light);
}

.publication-venue {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-style: italic;
    margin-bottom: 0.75rem;
}

.publication-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-light);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all var(--transition-base);
}

.publication-link:hover {
    color: var(--primary);
    gap: 0.75rem;
}

.publication-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.tag-small {
    padding: 0.125rem 0.5rem;
    background: rgba(236, 72, 153, 0.1);
    border: 1px solid rgba(236, 72, 153, 0.3);
    border-radius: 50px;
    font-size: 0.625rem;
    color: var(--accent);
}

/* ==========================================
   PROJECTS SECTION
   ========================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

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

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

.project-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.project-date {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.project-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.project-highlights {
    list-style: none;
    margin-bottom: var(--spacing-sm);
}

.project-highlights li {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.875rem;
}

.project-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

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

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--primary-light);
}

/* ==========================================
   SKILLS SECTION WITH PROGRESS BARS
   ========================================== */
.skills {
    background: var(--bg-secondary);
}

/* Skills List - Simple Format */
.skills-list {
    display: grid;
    gap: var(--spacing-md);
}

.skill-category {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

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

.skill-category h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.skill-category h3 i {
    color: var(--primary);
}

.skill-category p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.6;
}

/* Achievement Badges */
.achievement-badges {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.badge-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.badge-item:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

.badge-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.badge-info h4 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.badge-info p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Skills Chart with Progress Bars */
.skills-chart {
    display: grid;
    gap: var(--spacing-md);
}

.skill-category-chart {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

.skill-category-chart:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.category-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.category-title i {
    color: var(--primary);
}

.skill-bars {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.skill-bar-item {
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.skill-bar-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(5px);
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.skill-name {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.skill-percentage {
    font-size: 0.875rem;
    color: var(--primary-light);
    font-weight: 600;
}

.skill-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 10px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

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

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.skill-category {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

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

.skill-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

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

.skill-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.skill-tag:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
    color: var(--primary-light);
    transform: translateY(-2px);
}

/* ==========================================
   AWARDS SECTION
   ========================================== */
.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.award-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

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

.award-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.award-icon.gold {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.award-icon.bronze {
    background: linear-gradient(135deg, #cd7f32, #b8732c);
}

.award-icon.blue {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.award-icon.purple {
    background: linear-gradient(135deg, #a855f7, #9333ea);
}

.award-icon.green {
    background: linear-gradient(135deg, #10b981, #059669);
}

.award-content h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.award-title {
    color: var(--primary-light);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.award-org {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.award-year {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
}

.award-desc {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* ==========================================
   CONTACT SECTION
   ========================================== */
.contact {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.contact-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

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

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    font-size: 1.5rem;
}

.contact-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) 0;
}

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

.footer-content p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
}

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

/* Override with theme-specific gradients */
[data-theme="blue"] .footer-links a:hover {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
}

[data-theme="purple"] .footer-links a:hover {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
}

[data-theme="green"] .footer-links a:hover {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
}

[data-theme="orange"] .footer-links a:hover {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
}

/* ==========================================
   SCROLL TO TOP BUTTON
   ========================================== */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

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

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ==========================================
   LIGHT MODE THEME
   ========================================== */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-hover: #e2e8f0;
    
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #ec4899;
}

[data-theme="light"] .navbar {
    background: rgba(248, 250, 252, 0.9);
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
    backdrop-filter: blur(25px);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(248, 250, 252, 0.95);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.1);
    border-bottom: 1px solid rgba(99, 102, 241, 0.3);
}

[data-theme="light"] .hero {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
}

[data-theme="light"] .gradient-orb {
    opacity: 0.15;
    box-shadow: 0 0 100px rgba(99, 102, 241, 0.2);
}

[data-theme="light"] .orb-1 {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

[data-theme="light"] .orb-2 {
    background: linear-gradient(135deg, #ec4899, #f59e0b);
}

[data-theme="light"] .orb-3 {
    background: linear-gradient(135deg, #10b981, #3b82f6);
}

[data-theme="light"] .summary-card,
[data-theme="light"] .publication-card,
[data-theme="light"] .project-card,
[data-theme="light"] .skill-category,
[data-theme="light"] .award-card,
[data-theme="light"] .contact-card,
[data-theme="light"] .education-card,
[data-theme="light"] .timeline-content {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(99, 102, 241, 0.2);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.1);
    backdrop-filter: blur(15px);
}

[data-theme="light"] .theme-toggle,
[data-theme="light"] .download-cv {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

[data-theme="light"] .theme-toggle:hover,
[data-theme="light"] .download-cv:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

[data-theme="light"] .summary-card:hover,
[data-theme="light"] .publication-card:hover,
[data-theme="light"] .project-card:hover,
[data-theme="light"] .skill-category:hover,
[data-theme="light"] .award-card:hover,
[data-theme="light"] .contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.15);
    border-color: var(--primary);
}

[data-theme="light"] .btn-primary {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

[data-theme="light"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    transform: translateY(-2px);
}

/* ==========================================
   THEME CUSTOMIZATION
   ========================================== */

/* Blue Theme */
[data-theme="blue"] {
    --primary: #3b82f6;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --secondary: #1e40af;
    --accent: #0ea5e9;
}

[data-theme="blue"] .orb-1 {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

[data-theme="blue"] .orb-2 {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
}

[data-theme="blue"] .orb-3 {
    background: linear-gradient(135deg, #1e40af, #1e3a8a);
}

/* Blue Theme - Complete styling */
[data-theme="blue"] .nav-brand,
[data-theme="blue"] .highlight,
[data-theme="blue"] .section-title,
[data-theme="blue"] .stat-number {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="blue"] .section-line,
[data-theme="blue"] .nav-link::after,
[data-theme="blue"] .timeline::before {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
}

[data-theme="blue"] .btn-primary {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3) !important;
}

[data-theme="blue"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4) !important;
}

[data-theme="blue"] .btn-primary i,
[data-theme="blue"] .btn-primary {
    color: white !important;
}

[data-theme="blue"] .summary-icon,
[data-theme="blue"] .education-icon,
[data-theme="blue"] .project-icon,
[data-theme="blue"] .contact-icon,
[data-theme="blue"] .stat-icon,
[data-theme="blue"] .scroll-to-top {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
}

[data-theme="blue"] .timeline-dot {
    background: #3b82f6;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

[data-theme="blue"] .publication-card::before {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
}

[data-theme="blue"] .contact-item i,
[data-theme="blue"] .timeline-achievements li::before,
[data-theme="blue"] .education-achievements i {
    color: #3b82f6 !important;
}

[data-theme="blue"] .contact-item:focus {
    outline: none !important;
    color: #60a5fa !important;
}

[data-theme="blue"] .filter-btn {
    background: rgba(59, 130, 246, 0.1) !important;
    border: 1px solid rgba(59, 130, 246, 0.3) !important;
    color: #60a5fa !important;
}

[data-theme="blue"] .filter-btn.active {
    background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
    color: white !important;
    border-color: #3b82f6 !important;
}

[data-theme="blue"] .btn-secondary {
    background: rgba(59, 130, 246, 0.1) !important;
    border: 1px solid rgba(59, 130, 246, 0.3) !important;
    color: #60a5fa !important;
}

[data-theme="blue"] .btn-secondary:hover {
    background: rgba(59, 130, 246, 0.2) !important;
    border-color: #3b82f6 !important;
    color: #93c5fd !important;
}

[data-theme="blue"] .btn-secondary i {
    color: #60a5fa !important;
}

[data-theme="blue"] .btn-secondary:hover i {
    color: #93c5fd !important;
}

/* Purple Theme */
[data-theme="purple"] {
    --primary: #8b5cf6;
    --primary-dark: #7c3aed;
    --primary-light: #a78bfa;
    --secondary: #6d28d9;
    --accent: #c084fc;
}

[data-theme="purple"] .orb-1 {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

[data-theme="purple"] .orb-2 {
    background: linear-gradient(135deg, #c084fc, #a855f7);
}

[data-theme="purple"] .orb-3 {
    background: linear-gradient(135deg, #6d28d9, #5b21b6);
}

/* Purple Theme - Complete styling */
[data-theme="purple"] .nav-brand,
[data-theme="purple"] .highlight,
[data-theme="purple"] .section-title,
[data-theme="purple"] .stat-number {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="purple"] .section-line,
[data-theme="purple"] .nav-link::after,
[data-theme="purple"] .timeline::before {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
}

[data-theme="purple"] .btn-primary {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3) !important;
}

[data-theme="purple"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4) !important;
}

[data-theme="purple"] .btn-primary i,
[data-theme="purple"] .btn-primary {
    color: white !important;
}

[data-theme="purple"] .summary-icon,
[data-theme="purple"] .education-icon,
[data-theme="purple"] .project-icon,
[data-theme="purple"] .contact-icon,
[data-theme="purple"] .stat-icon,
[data-theme="purple"] .scroll-to-top {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
}

[data-theme="purple"] .timeline-dot {
    background: #8b5cf6;
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2);
}

[data-theme="purple"] .publication-card::before {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
}

[data-theme="purple"] .contact-item i,
[data-theme="purple"] .timeline-achievements li::before,
[data-theme="purple"] .education-achievements i {
    color: #8b5cf6 !important;
}

[data-theme="purple"] .contact-item:focus {
    outline: none !important;
    color: #a78bfa !important;
}

[data-theme="purple"] .filter-btn {
    background: rgba(139, 92, 246, 0.1) !important;
    border: 1px solid rgba(139, 92, 246, 0.3) !important;
    color: #a78bfa !important;
}

[data-theme="purple"] .filter-btn.active {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa) !important;
    color: white !important;
    border-color: #8b5cf6 !important;
}

[data-theme="purple"] .btn-secondary {
    background: rgba(139, 92, 246, 0.1) !important;
    border: 1px solid rgba(139, 92, 246, 0.3) !important;
    color: #a78bfa !important;
}

[data-theme="purple"] .btn-secondary:hover {
    background: rgba(139, 92, 246, 0.2) !important;
    border-color: #8b5cf6 !important;
    color: #c4b5fd !important;
}

[data-theme="purple"] .btn-secondary i {
    color: #a78bfa !important;
}

[data-theme="purple"] .btn-secondary:hover i {
    color: #c4b5fd !important;
}

/* Green Theme */
[data-theme="green"] {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
    --secondary: #047857;
    --accent: #6ee7b7;
}

[data-theme="green"] .orb-1 {
    background: linear-gradient(135deg, #10b981, #059669);
}

[data-theme="green"] .orb-2 {
    background: linear-gradient(135deg, #6ee7b7, #34d399);
}

[data-theme="green"] .orb-3 {
    background: linear-gradient(135deg, #047857, #065f46);
}

/* Green Theme - Complete styling */
[data-theme="green"] .nav-brand {
    background: linear-gradient(135deg, #10b981, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="green"] .nav-link::after {
    background: linear-gradient(135deg, #10b981, #34d399);
}

[data-theme="green"] .highlight {
    background: linear-gradient(135deg, #10b981, #34d399, #6ee7b7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="green"] .section-title {
    background: linear-gradient(135deg, #34d399, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="green"] .section-line,
[data-theme="green"] .nav-link::after,
[data-theme="green"] .timeline::before {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
}

[data-theme="green"] .stat-number {
    background: linear-gradient(135deg, #10b981, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="green"] .btn-primary {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3) !important;
}

[data-theme="green"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4) !important;
}

[data-theme="green"] .btn-primary i {
    color: white !important;
}

[data-theme="green"] .btn-primary {
    color: white !important;
}

[data-theme="green"] .summary-icon,
[data-theme="green"] .education-icon,
[data-theme="green"] .project-icon,
[data-theme="green"] .contact-icon,
[data-theme="green"] .stat-icon {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
}

[data-theme="green"] .timeline::before {
    background: linear-gradient(180deg, #10b981, #34d399) !important;
}

[data-theme="green"] .timeline-dot {
    background: #10b981;
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
}

[data-theme="green"] .publication-card::before {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
}

[data-theme="green"] .scroll-to-top {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3) !important;
}

[data-theme="green"] .contact-item i,
[data-theme="green"] .timeline-achievements li::before,
[data-theme="green"] .education-achievements i {
    color: #10b981 !important;
}

[data-theme="green"] .contact-item:focus {
    outline: none !important;
    color: #34d399 !important;
}

[data-theme="green"] .filter-btn {
    background: rgba(16, 185, 129, 0.1) !important;
    border: 1px solid rgba(16, 185, 129, 0.3) !important;
    color: #34d399 !important;
}

[data-theme="green"] .filter-btn.active {
    background: linear-gradient(135deg, #10b981, #34d399) !important;
    color: white !important;
    border-color: #10b981 !important;
}

[data-theme="green"] .btn-secondary {
    background: rgba(16, 185, 129, 0.1) !important;
    border: 1px solid rgba(16, 185, 129, 0.3) !important;
    color: #34d399 !important;
}

[data-theme="green"] .btn-secondary:hover {
    background: rgba(16, 185, 129, 0.2) !important;
    border-color: #10b981 !important;
    color: #6ee7b7 !important;
}

[data-theme="green"] .btn-secondary i {
    color: #34d399 !important;
}

[data-theme="green"] .btn-secondary:hover i {
    color: #6ee7b7 !important;
}

[data-theme="green"] .theme-toggle,
[data-theme="green"] .download-cv {
    border-color: rgba(16, 185, 129, 0.3);
}

[data-theme="green"] .theme-toggle:hover,
[data-theme="green"] .download-cv:hover {
    background: rgba(16, 185, 129, 0.1);
    border-color: #10b981;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

/* Orange Theme */
[data-theme="orange"] {
    --primary: #f59e0b;
    --primary-dark: #d97706;
    --primary-light: #fbbf24;
    --secondary: #b45309;
    --accent: #fcd34d;
}

[data-theme="orange"] .orb-1 {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

[data-theme="orange"] .orb-2 {
    background: linear-gradient(135deg, #fcd34d, #fbbf24);
}

[data-theme="orange"] .orb-3 {
    background: linear-gradient(135deg, #b45309, #92400e);
}

/* Orange Theme - Complete styling */
[data-theme="orange"] .nav-brand,
[data-theme="orange"] .highlight,
[data-theme="orange"] .section-title,
[data-theme="orange"] .stat-number {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="orange"] .section-line,
[data-theme="orange"] .nav-link::after,
[data-theme="orange"] .timeline::before {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
}

[data-theme="orange"] .btn-primary {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3) !important;
}

[data-theme="orange"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4) !important;
}

[data-theme="orange"] .btn-primary i {
    color: white !important;
}

[data-theme="orange"] .btn-primary {
    color: white !important;
}

[data-theme="orange"] .summary-icon,
[data-theme="orange"] .education-icon,
[data-theme="orange"] .project-icon,
[data-theme="orange"] .contact-icon,
[data-theme="orange"] .stat-icon,
[data-theme="orange"] .scroll-to-top {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
}

[data-theme="orange"] .timeline-dot {
    background: #f59e0b;
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.2);
}

[data-theme="orange"] .publication-card::before {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
}

[data-theme="orange"] .contact-item i,
[data-theme="orange"] .timeline-achievements li::before,
[data-theme="orange"] .education-achievements i {
    color: #f59e0b !important;
}

[data-theme="orange"] .contact-item:focus {
    outline: none !important;
    color: #fbbf24 !important;
}

[data-theme="orange"] .filter-btn {
    background: rgba(245, 158, 11, 0.1) !important;
    border: 1px solid rgba(245, 158, 11, 0.3) !important;
    color: #fbbf24 !important;
}

[data-theme="orange"] .filter-btn.active {
    background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
    color: white !important;
    border-color: #f59e0b !important;
}

[data-theme="orange"] .btn-secondary {
    background: rgba(245, 158, 11, 0.1) !important;
    border: 1px solid rgba(245, 158, 11, 0.3) !important;
    color: #fbbf24 !important;
}

[data-theme="orange"] .btn-secondary:hover {
    background: rgba(245, 158, 11, 0.2) !important;
    border-color: #f59e0b !important;
    color: #fcd34d !important;
}

[data-theme="orange"] .btn-secondary i {
    color: #fbbf24 !important;
}

[data-theme="orange"] .btn-secondary:hover i {
    color: #fcd34d !important;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
    .nav-controls {
        gap: 0.5rem;
    }
    
    .theme-toggle,
    .download-cv {
        width: 35px;
        height: 35px;
    }
    
    .theme-toggle i,
    .download-cv i {
        font-size: 0.9rem;
    }
    
    .theme-dropdown {
        right: -10px;
        min-width: 100px;
    }
    
    .theme-option {
        padding: 0.4rem;
        font-size: 0.8rem;
    }
    
    .theme-preview {
        width: 16px;
        height: 16px;
    }
    
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-md);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-xl);
    }

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

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

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

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

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

    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-dot {
        left: -1.65rem;
    }

    .timeline-header {
        flex-direction: column;
    }

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

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .stat-number {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .skills-grid,
    .summary-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

/* Intersection Observer Animations */
.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease-out forwards;
}

.slide-in-left {
    opacity: 0;
    animation: slideInLeft 1s ease-out forwards;
}

.slide-in-right {
    opacity: 0;
    animation: slideInRight 1s ease-out forwards;
}