:root {
    
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(22, 22, 34, 0.6);
    --bg-card-hover: rgba(30, 30, 48, 0.8);
    
    --text-primary: #e8e8f0;
    --text-secondary: #9494a8;
    --text-muted: #5c5c72;
    
    --accent-primary: #6c5ce7;
    --accent-secondary: #a29bfe;
    --accent-glow: rgba(108, 92, 231, 0.3);
    
    --gradient-primary: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #74b9ff 100%);
    --gradient-accent: linear-gradient(135deg, #fd79a8 0%, #6c5ce7 50%, #74b9ff 100%);
    --gradient-warm: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    
    --border-color: rgba(148, 148, 168, 0.1);
    --border-hover: rgba(108, 92, 231, 0.3);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --section-padding: 120px;
    --container-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 24px;
    transition: all var(--transition-medium);
    backdrop-filter: blur(0px);
    background: transparent;
}

.navbar.scrolled {
    backdrop-filter: blur(20px) saturate(180%);
    background: rgba(10, 10, 15, 0.8);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: color var(--transition-fast);
    letter-spacing: -0.5px;
}

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

.nav-logo:hover {
    color: var(--accent-secondary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
    border-radius: 1px;
}

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

.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-github-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(108, 92, 231, 0.1);
    border: 1px solid rgba(108, 92, 231, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-secondary);
    transition: all var(--transition-fast);
}

.nav-github-btn:hover {
    background: rgba(108, 92, 231, 0.2);
    border-color: rgba(108, 92, 231, 0.4);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 120px 24px 60px;
}

.hero-content {
    max-width: var(--container-width);
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-greeting {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.greeting-line {
    width: 40px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
}

.greeting-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 500;
}

.hero-name {
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -3px;
    margin-bottom: 16px;
}

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

.hero-tagline {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    color: var(--accent-secondary);
    margin-bottom: 20px;
    min-height: 1.5em;
}

.typewriter-cursor {
    animation: blink 1s step-end infinite;
    color: var(--accent-primary);
    font-weight: 300;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 540px;
}

.highlight {
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.4;
    border-radius: 1px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-medium);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #a29bfe 0%, #6c5ce7 50%, #5f3dc4 100%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.4);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary span,
.btn-primary svg {
    position: relative;
    z-index: 1;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    background: rgba(108, 92, 231, 0.05);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 28px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

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

.avatar-wrapper {
    position: relative;
    width: 340px;
    height: 340px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.avatar-img {
    width: 240px;
    height: 240px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(108, 92, 231, 0.3);
    position: relative;
    z-index: 2;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.avatar-img:hover {
    transform: scale(1.02);
    box-shadow: 0 0 60px rgba(108, 92, 231, 0.2);
}

.avatar-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid rgba(108, 92, 231, 0.15);
    animation: rotateRing 20s linear infinite;
}

.avatar-ring::before {
    content: '';
    position: absolute;
    top: -3px;
    left: 50%;
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-primary);
}

.avatar-ring-2 {
    inset: -20px;
    border-color: rgba(162, 155, 254, 0.08);
    animation-direction: reverse;
    animation-duration: 30s;
}

.avatar-ring-2::before {
    background: var(--accent-secondary);
    box-shadow: 0 0 10px var(--accent-secondary);
}

@keyframes rotateRing {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.avatar-badge {
    position: absolute;
    bottom: 30px;
    right: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(108, 92, 231, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    z-index: 3;
    color: var(--accent-secondary);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #00d68f;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 214, 143, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(0, 214, 143, 0); }
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(22, 22, 34, 0.85);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary);
    z-index: 3;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.floating-card svg {
    color: var(--accent-secondary);
}

.card-1 {
    top: 30px;
    left: -20px;
    animation: float 6s ease-in-out infinite;
}

.card-2 {
    top: 60px;
    right: -30px;
    animation: float 6s ease-in-out infinite 1s;
}

.card-3 {
    bottom: 60px;
    left: -10px;
    animation: float 6s ease-in-out infinite 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

// scrolling part
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: auto;
    padding-bottom: 20px;
}

.scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-wheel {
    width: 3px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 2px;
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(12px); opacity: 0; }
}

.scroll-indicator span {
    font-size: 0.6875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 500;
}

.section {
    padding: var(--section-padding) 24px;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--accent-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 500;
    display: block;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.2;
    margin-bottom: 16px;
}

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

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

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

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

.info-card {
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.info-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.info-card:hover::before {
    transform: scaleX(1);
}

.info-card-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 92, 231, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    color: var(--accent-secondary);
}

.info-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.3px;
}

.info-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.projects-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.featured-project {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    margin-bottom: 48px;
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition-medium);
}

.featured-project::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
}

.featured-project:hover {
    border-color: var(--border-hover);
}

.project-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(108, 92, 231, 0.1);
    border: 1px solid rgba(108, 92, 231, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-secondary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.featured-project-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.featured-project-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.project-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tech-tag {
    padding: 6px 14px;
    background: rgba(108, 92, 231, 0.08);
    border: 1px solid rgba(108, 92, 231, 0.15);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-secondary);
}

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

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

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

.code-window {
    background: #0d1117;
    border: 1px solid rgba(148, 148, 168, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.code-window-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
    background: rgba(22, 22, 34, 0.5);
    border-bottom: 1px solid rgba(148, 148, 168, 0.05);
}

.window-dots {
    display: flex;
    gap: 7px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

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

.code-content {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.8;
    overflow-x: auto;
    color: #c9d1d9;
}

.code-keyword { color: #ff7b72; }
.code-module { color: #79c0ff; }
.code-class { color: #ffa657; }
.code-function { color: #d2a8ff; }
.code-string { color: #a5d6ff; }
.code-comment { color: #8b949e; font-style: italic; }

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

.project-card {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-medium);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.project-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.project-card:hover::before {
    transform: scaleX(1);
}

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

.project-icon {
    color: var(--accent-secondary);
}

.project-external-link {
    color: var(--text-muted);
    transition: all var(--transition-fast);
    padding: 4px;
}

.project-external-link:hover {
    color: var(--accent-secondary);
    transform: translate(2px, -2px);
}

.project-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 12px;
}

.project-card-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-card-footer {
    margin-top: auto;
}

.tech-tag-sm {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-muted);
    margin-right: 12px;
}

.tech-tag-sm::before {
    content: '#';
    color: var(--accent-primary);
    margin-right: 2px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.skill-category {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-medium);
}

.skill-category:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.skill-category-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.skill-category-title svg {
    color: var(--accent-secondary);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.skill-item:hover {
    color: var(--text-primary);
}

.skill-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--dot-color);
    flex-shrink: 0;
    box-shadow: 0 0 8px var(--dot-color);
}

.github-cta {
    padding: 64px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.08) 0%, rgba(162, 155, 254, 0.04) 100%);
    border: 1px solid rgba(108, 92, 231, 0.15);
    border-radius: var(--radius-xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.github-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
}

.github-cta-content h2 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 16px;
    line-height: 1.2;
}

.github-cta-content p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 1.0625rem;
}

.contribution-graph {
    display: grid;
    grid-template-columns: repeat(20, 1fr);
    gap: 4px;
    padding: 20px;
    background: rgba(10, 10, 15, 0.5);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.contrib-cell {
    aspect-ratio: 1;
    border-radius: 3px;
    background: rgba(108, 92, 231, 0.05);
    transition: background var(--transition-fast);
}

.contrib-cell.level-1 { background: rgba(108, 92, 231, 0.15); }
.contrib-cell.level-2 { background: rgba(108, 92, 231, 0.3); }
.contrib-cell.level-3 { background: rgba(108, 92, 231, 0.5); }
.contrib-cell.level-4 { background: rgba(108, 92, 231, 0.75); }

.footer {
    padding: 80px 24px 40px;
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    text-align: center;
    margin-bottom: 60px;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-medium);
}

.contact-link:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    background: rgba(108, 92, 231, 0.05);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.footer-made {
    font-size: 0.8125rem;
}

.heart {
    color: #ff6b6b;
    display: inline-block;
    animation: heartbeat 1.5s ease-in-out infinite;
}

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

// animation
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate="fade-left"] {
    transform: translateX(40px);
}

[data-animate].visible {
    opacity: 1;
    transform: translate(0);
}

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }
    
    .hero-description {
        max-width: 100%;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .avatar-wrapper {
        width: 280px;
        height: 280px;
    }
    
    .avatar-img {
        width: 200px;
        height: 200px;
    }
    
    .floating-card {
        display: none;
    }
    
    .featured-project {
        grid-template-columns: 1fr;
        padding: 32px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .github-cta {
        grid-template-columns: 1fr;
        padding: 40px;
        text-align: center;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }
    
    .nav-links,
    .nav-github-btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        gap: 0;
    }
    
    .nav-links.active .nav-link {
        padding: 16px;
        width: 100%;
        text-align: center;
        font-size: 1rem;
    }
    
    .hero {
        padding: 100px 24px 40px;
    }
    
    .hero-name {
        letter-spacing: -1.5px;
    }
    
    .hero-greeting {
        justify-content: center;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-links {
        flex-direction: column;
        align-items: center;
    }
    
    .contribution-graph {
        grid-template-columns: repeat(14, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .github-cta {
        padding: 28px;
    }
    
    .github-cta-content h2 {
        font-size: 1.5rem;
    }
}