:root {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: #1e1e3f;
    --bg-hover: #2a2a4a;
    
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --accent-primary: #6366f1;
    --accent-secondary: #a855f7;
    --accent-tertiary: #22d3ee;
    --accent-gradient: linear-gradient(135deg, #6366f1, #a855f7);
    
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    --java-color: #f89820;
    --python-color: #3776ab;
    --cpp-color: #00599c;
    --html-color: #e34f26;
    --css-color: #1572b6;
    --js-color: #f7df1e;
    
    --nav-width: 280px;
    --content-max-width: 900px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 20px;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: var(--radius-full);
}

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

.nav-checkbox {
    display: none;
}

.nav-toggle-label {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.nav-toggle-label span::before,
.nav-toggle-label span::after {
    content: '';
    position: absolute;
}

.nav-toggle-label span::before {
    transform: translateY(-6px);
}

.nav-toggle-label span::after {
    transform: translateY(6px);
}

.nav-checkbox:checked + .nav-toggle-label span {
    background: transparent;
}

.nav-checkbox:checked + .nav-toggle-label span::before {
    transform: rotate(45deg);
}

.nav-checkbox:checked + .nav-toggle-label span::after {
    transform: rotate(-45deg);
}

#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--nav-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    overflow-y: auto;
    overflow-x: hidden;
}

.nav-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.brand-icon {
    font-size: 1.5rem;
}

.brand-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-badge {
    background: var(--accent-primary);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.nav-search {
    margin: var(--spacing-md) var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-muted);
    font-size: 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-search i {
    font-size: 0.8rem;
}

.nav-links {
    list-style: none;
    padding: var(--spacing-sm) var(--spacing-md);
    flex: 1;
    overflow-y: auto;
}

.nav-links li {
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
}

.nav-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-link:hover i {
    opacity: 1;
    color: var(--accent-primary);
}

.nav-tag {
    margin-left: auto;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-tag.live {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.nav-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.nav-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.nav-stat {
    display: flex;
    flex-direction: column;
}

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

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

.nav-social {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.nav-social a:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

#main-doc {
    margin-left: var(--nav-width);
    min-height: 100vh;
    padding: var(--spacing-2xl);
}

.main-section {
    max-width: var(--content-max-width);
    margin: 0 auto var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: var(--shadow-md);
}

.section-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.section-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.section-icon.hackathon {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.section-icon.web {
    background: linear-gradient(135deg, #3b82f6, #22d3ee);
}

.section-icon.java {
    background: linear-gradient(135deg, #f89820, #ef4444);
}

.section-icon.python {
    background: linear-gradient(135deg, #3776ab, #22d3ee);
}

.section-icon.cpp {
    background: linear-gradient(135deg, #00599c, #6366f1);
}

.section-icon.dsa {
    background: linear-gradient(135deg, #22c55e, #22d3ee);
}

.section-icon.skills {
    background: linear-gradient(135deg, #a855f7, #f472b6);
}

.section-icon.connect {
    background: linear-gradient(135deg, #6366f1, #22d3ee);
}

.section-title-wrap h1 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

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

.section-intro {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.section-intro strong {
    color: var(--accent-primary);
}

.intro-hero {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.intro-greeting {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.intro-name {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-sm);
}

.intro-tagline {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.intro-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.intro-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--accent-primary);
}

.intro-description {
    margin-bottom: var(--spacing-xl);
}

.intro-description p {
    margin-bottom: var(--spacing-md);
}

.intro-description strong {
    color: var(--accent-primary);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.info-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.info-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.info-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    color: white;
}

.info-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.info-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.project-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    transition: var(--transition-normal);
}

.project-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
}

.project-card.featured {
    border-color: rgba(99, 102, 241, 0.2);
}

.project-status {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.2);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.live {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
}

.pulse {
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    }
    70% {
        box-shadow: 0 0 0 6px rgba(34, 197, 94, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

.project-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.project-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    color: white;
    background: var(--accent-gradient);
    flex-shrink: 0;
}

.project-icon.unisync {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.project-icon.neuralplan {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.project-icon.portfolio {
    background: linear-gradient(135deg, #22d3ee, #3b82f6);
}

.project-icon.landing {
    background: linear-gradient(135deg, #a855f7, #f472b6);
}

.project-icon.docs {
    background: linear-gradient(135deg, #22c55e, #22d3ee);
}

.project-icon.tribute {
    background: linear-gradient(135deg, #6366f1, #a855f7);
}

.project-icon.survey {
    background: linear-gradient(135deg, #f472b6, #a855f7);
}

.project-icon.java-game {
    background: linear-gradient(135deg, #f89820, #ef4444);
}

.project-icon.connect4 {
    background: linear-gradient(135deg, #ef4444, #f59e0b);
}

.project-icon.guess {
    background: linear-gradient(135deg, #22c55e, #3b82f6);
}

.project-icon.tictactoe {
    background: linear-gradient(135deg, #3b82f6, #6366f1);
}

.project-title-wrap h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.project-title-wrap p,
.project-title-wrap span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.project-body {
    padding: var(--spacing-lg);
}

.project-body > p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tech-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

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

.feature-list.compact {
    gap: var(--spacing-xs);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
}

.feature-item i {
    color: var(--success);
    margin-top: 4px;
    flex-shrink: 0;
}

.project-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-fast);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    background: transparent;
}

.project-link:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.project-link.primary {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.project-link.primary:hover {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
}

.project-link.current {
    background: rgba(34, 197, 94, 0.15);
    border-color: var(--success);
    color: var(--success);
    cursor: default;
}

.projects-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.feature-box {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-box i {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-box h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-box p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.callout {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
}

.callout.production {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
}

.callout-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    color: white;
    flex-shrink: 0;
}

.callout.production .callout-icon {
    background: linear-gradient(135deg, #22c55e, #22d3ee);
}

.callout-content h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

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

.code-block {
    background: #0d1117;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: var(--spacing-lg) 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-lang {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.code-file {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.code-block pre {
    padding: var(--spacing-lg);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.6;
}

.code-block code {
    font-family: inherit;
    color: var(--text-secondary);
}

.comment {
    color: #6a737d;
    font-style: italic;
}

.keyword {
    color: #ff7b72;
}

.string {
    color: #a5d6ff;
}

.number {
    color: #79c0ff;
}

.function {
    color: #d2a8ff;
}

.class {
    color: #ffa657;
}

.property {
    color: #79c0ff;
}

.value {
    color: #a5d6ff;
}

.selector {
    color: #7ee787;
}

.preprocessor {
    color: #ff7b72;
}

.link-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.link-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: var(--transition-normal);
}

.link-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.link-card i {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.link-card strong {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 2px;
}

.link-card span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.subsection-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.stat-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    margin: 0 auto var(--spacing-sm);
    color: white;
    font-size: 1.25rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.progress-section {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.progress-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

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

.progress-item {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.progress-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

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

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

.progress-count {
    font-size: 0.85rem;
    color: var(--accent-primary);
    font-weight: 500;
}

.progress-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
}

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

.patterns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.pattern-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.pattern-card:hover {
    border-color: var(--accent-primary);
}

.pattern-card code {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-xs);
}

.pattern-card span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.skills-section {
    margin-bottom: var(--spacing-xl);
}

.skills-section h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.skills-section h3 i {
    color: var(--accent-primary);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.skill-badge:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.skill-badge.java {
    border-color: var(--java-color);
    color: var(--java-color);
}

.skill-badge.python {
    border-color: var(--python-color);
    color: var(--python-color);
}

.skill-badge.cpp {
    border-color: var(--cpp-color);
    color: var(--cpp-color);
}

.skill-badge.html {
    border-color: var(--html-color);
    color: var(--html-color);
}

.skill-badge.css {
    border-color: var(--css-color);
    color: var(--css-color);
}

.skill-badge.js {
    border-color: var(--js-color);
    color: var(--js-color);
}

.competencies {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.competencies h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.competencies h3 i {
    color: var(--warning);
}

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

.competency-item {
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-primary);
}

.competency-item h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.competency-item h4 i {
    color: var(--accent-primary);
    font-size: 0.9rem;
}

.competency-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.connect-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.connect-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: var(--transition-normal);
}

.connect-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.connect-card.github:hover {
    border-color: #6e5494;
    background: rgba(110, 84, 148, 0.1);
}

.connect-card.linkedin:hover {
    border-color: #0077b5;
    background: rgba(0, 119, 181, 0.1);
}

.connect-card.leetcode:hover {
    border-color: #ffa116;
    background: rgba(255, 161, 22, 0.1);
}

.connect-card.portfolio:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.connect-card.email:hover {
    border-color: #ea4335;
    background: rgba(234, 67, 53, 0.1);
}

.connect-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.connect-card.github .connect-icon {
    color: #6e5494;
}

.connect-card.linkedin .connect-icon {
    color: #0077b5;
}

.connect-card.leetcode .connect-icon {
    color: #ffa116;
}

.connect-card.portfolio .connect-icon {
    color: var(--accent-primary);
}

.connect-card.email .connect-icon {
    color: #ea4335;
}

.connect-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.connect-info span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.about-card {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.about-card h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.about-card h3 i {
    color: var(--accent-primary);
}

.about-grid {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.about-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
}

.about-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.about-value {
    color: var(--text-primary);
    font-weight: 500;
}

.roadmap-preview {
    margin-bottom: var(--spacing-xl);
}

.roadmap-preview h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

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

.roadmap-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    align-items: center;
}

.roadmap-date {
    min-width: 80px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

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

.open-for {
    margin-bottom: var(--spacing-xl);
}

.open-for h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.open-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.open-tags span {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--accent-primary);
}

.quote {
    padding: var(--spacing-lg);
    background: rgba(99, 102, 241, 0.1);
    border-left: 4px solid var(--accent-primary);
    border-radius: var(--radius-md);
    font-style: italic;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.doc-footer {
    max-width: var(--content-max-width);
    margin: var(--spacing-2xl) auto 0;
    padding: var(--spacing-xl);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-content p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.footer-content strong {
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

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

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

.footer-links span {
    color: var(--text-muted);
}

.footer-note {
    font-size: 0.85rem;
    margin-top: var(--spacing-md);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    color: white;
    border-radius: var(--radius-full);
    text-decoration: none;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    z-index: 999;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

@media (max-width: 1024px) {
    :root {
        --nav-width: 260px;
    }
    
    #main-doc {
        padding: var(--spacing-xl);
    }
    
    .main-section {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .nav-toggle-label {
        display: flex;
    }
    
    #navbar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .nav-checkbox:checked ~ #navbar {
        transform: translateX(0);
    }
    
    #main-doc {
        margin-left: 0;
        padding: var(--spacing-lg);
        padding-top: 80px;
    }
    
    .main-section {
        padding: var(--spacing-md);
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .section-icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
    
    .section-title-wrap h1 {
        font-size: 1.5rem;
    }
    
    .intro-name {
        font-size: 2rem;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .connect-grid {
        grid-template-columns: 1fr;
    }
    
    .code-block pre {
        font-size: 0.75rem;
        padding: var(--spacing-md);
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    #main-doc {
        padding: var(--spacing-md);
        padding-top: 70px;
    }
    
    .main-section {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }
    
    .intro-name {
        font-size: 1.75rem;
    }
    
    .intro-badges {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    
    .project-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .project-footer {
        flex-direction: column;
    }
    
    .project-link {
        width: 100%;
        justify-content: center;
    }
    
    .patterns-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .link-cards {
        grid-template-columns: 1fr;
    }
    
    .roadmap-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .about-item {
        padding: var(--spacing-sm);
    }
}

@media print {
    #navbar,
    .nav-toggle-label,
    .back-to-top,
    .project-link,
    .nav-social {
        display: none !important;
    }
    
    #main-doc {
        margin-left: 0;
        padding: 0;
    }
    
    .main-section {
        break-inside: avoid;
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .code-block {
        background: #f5f5f5;
        border: 1px solid #ddd;
    }
    
    a {
        color: inherit;
        text-decoration: underline;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

a:focus,
button:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 10000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

@media (prefers-contrast: high) {
    :root {
        --bg-primary: #000;
        --bg-secondary: #0a0a0a;
        --bg-tertiary: #111;
        --text-primary: #fff;
        --text-secondary: #e0e0e0;
    }
    
    .project-card,
    .info-card,
    .stat-card {
        border-width: 2px;
    }
}