/* ====================
   CSS Variables & Reset
   ==================== */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #16161f;
    
    --accent-primary: #00d4ff;
    --accent-secondary: #00ff88;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #00ff88 100%);
    
    --text-primary: #ffffff;
    --text-secondary: #b4b4c0;
    --text-muted: #6b6b80;
    
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 212, 255, 0.1);
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Consolas', monospace;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;
    --nav-height: 70px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-primary: #f8f9fc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eef0f5;
    --bg-card: #ffffff;
    
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8888a0;
    
    --border-color: rgba(0, 0, 0, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Selection */
::selection {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

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

/* ====================
   Utility Classes
   ==================== */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

.highlight {
    color: var(--accent-primary);
    font-weight: 500;
}

/* ====================
   Buttons
   ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-family: var(--font-main);
    font-size: 0.95rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--shadow-color);
    color: var(--bg-primary);
}

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

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

/* ====================
   Navigation
   ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 5px 0;
    transition: color var(--transition-fast);
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.resume-btn {
    padding: 10px 20px;
    font-size: 0.85rem;
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.resume-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
}

/* ====================
   Hero Section
   ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + 40px) 0 40px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 212, 255, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 255, 136, 0.1), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(0, 212, 255, 0.1), transparent);
    animation: gradientMove 15s ease-in-out infinite alternate;
}

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

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 16px;
    font-family: var(--font-mono);
}

.hero-name {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.typing-text {
    color: var(--text-primary);
    font-weight: 600;
}

.typing-cursor {
    color: var(--accent-primary);
    animation: blink 1s infinite;
}

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

.hero-tagline {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.hero-social {
    display: flex;
    gap: 24px;
    justify-content: center;
}

.hero-social a {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.hero-social a:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-5px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
    animation: bounce 2s infinite;
}

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

/* Animations */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }
.delay-4 { animation-delay: 0.8s; }
.delay-5 { animation-delay: 1s; }

@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}

/* ====================
   Section Styles
   ==================== */
.section {
    padding: var(--section-padding);
}

.section-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title::after {
    content: '';
    flex: 1;
    max-width: 300px;
    height: 1px;
    background: var(--border-color);
}

.title-number {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--accent-primary);
    font-weight: 500;
}

/* ====================
   About Section
   ==================== */
.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 60px;
    align-items: start;
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
}

.image-placeholder {
    width: 280px;
    height: 280px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--text-muted);
    font-size: 4rem;
}

.image-placeholder span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

.image-border {
    position: absolute;
    top: 16px;
    left: 16px;
    width: 280px;
    height: 280px;
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-lg);
    z-index: -1;
    transition: all var(--transition-normal);
}

.image-wrapper:hover .image-border {
    top: 12px;
    left: 12px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ====================
   Skills Section
   ==================== */
.skills {
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.skill-category {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.skill-category.full-width {
    grid-column: 1 / -1;
}

.skill-category-title {
    font-size: 1.1rem;
    margin-bottom: 24px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

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

.skill-item {
    position: relative;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.skill-name {
    font-weight: 500;
    color: var(--text-primary);
}

.skill-percent {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-primary);
}

.skill-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    width: 0%;
    transition: width 1s ease;
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.skill-badge:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.skill-badge i {
    color: var(--accent-primary);
}

/* ====================
   Projects Section
   ==================== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-main);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.1);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

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

.project-links {
    display: flex;
    gap: 16px;
}

.project-links a {
    color: var(--text-muted);
    font-size: 1.2rem;
    transition: color var(--transition-fast);
}

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

.project-title {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.project-card:hover .project-title {
    color: var(--accent-primary);
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    flex: 1;
    margin-bottom: 20px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 12px;
}

.project-tech span {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.project-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* ====================
   Experience Section
   ==================== */
.experience {
    background: var(--bg-secondary);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 40px;
    padding-bottom: 50px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -7px;
    top: 0;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    border: 3px solid var(--bg-secondary);
}

.timeline-content {
    background: var(--bg-card);
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.timeline-header {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 8px;
}

.timeline-title {
    font-size: 1.2rem;
    color: var(--text-primary);
}

.timeline-company {
    color: var(--accent-primary);
    font-weight: 500;
}

.timeline-date {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.timeline-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.timeline-tech span {
    font-size: 0.8rem;
    padding: 5px 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
}

/* ====================
   Achievements Section
   ==================== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.achievement-category-title {
    font-size: 1.2rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
}

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

.achievement-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.achievement-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.achievement-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(8px);
}

.achievement-card.featured {
    border-color: var(--accent-secondary);
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.05), transparent);
}

.achievement-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--accent-primary);
    font-size: 1.3rem;
    flex-shrink: 0;
}

.achievement-card.featured .achievement-icon {
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-secondary);
}

.achievement-details h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.achievement-details p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.achievement-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-normal);
}

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

.contact-item i {
    font-size: 1.2rem;
    color: var(--accent-primary);
    width: 24px;
    text-align: center;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

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

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

.btn-submit {
    align-self: flex-start;
}

/* ====================
   Footer
   ==================== */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}

.footer-text {
    color: var(--text-secondary);
}

.footer-social {
    display: flex;
    gap: 20px;
}

.footer-social a {
    color: var(--text-muted);
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.footer-social a:hover {
    color: var(--accent-primary);
    transform: translateY(-3px);
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ====================
   Back to Top
   ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50%;
    color: var(--bg-primary);
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    box-shadow: 0 10px 30px var(--shadow-color);
    transform: translateY(-5px);
}

/* ====================
   Responsive Design
   ==================== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image {
        display: flex;
        justify-content: center;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--nav-height));
        background: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        gap: 32px;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-link {
        font-size: 1.2rem;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .resume-btn {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .about-stats {
        justify-content: center;
    }
    
    .project-filters {
        gap: 10px;
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 7px;
    }
    
    .timeline-marker {
        left: 0;
    }
    
    .timeline-item {
        padding-left: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        width: 92%;
    }
    
    .section-title {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .section-title::after {
        display: none;
    }
    
    .about-stats {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .skill-badges {
        gap: 8px;
    }
    
    .skill-badge {
        padding: 8px 14px;
        font-size: 0.85rem;
    }
    
    .achievement-card {
        flex-direction: column;
        text-align: center;
    }
    
    .achievement-icon {
        margin: 0 auto;
    }
    
    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 45px;
        height: 45px;
    }
}

/* Light theme specifics */
[data-theme="light"] .navbar {
    background: rgba(248, 249, 252, 0.85);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(248, 249, 252, 0.95);
}

[data-theme="light"] .hero-gradient {
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 212, 255, 0.1), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 255, 136, 0.08), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(0, 212, 255, 0.08), transparent);
}

[data-theme="light"] .skill-progress {
    background: linear-gradient(135deg, #00b4d8 0%, #00cc77 100%);
}