/* ==========================================
   CSS Custom Properties & Base
   ========================================== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a2e;
    --bg-card: #16162a;
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b80;
    --accent-primary: #6c63ff;
    --accent-secondary: #00d4aa;
    --accent-tertiary: #ff6b9d;
    --gradient-primary: linear-gradient(135deg, #6c63ff 0%, #00d4aa 100%);
    --gradient-secondary: linear-gradient(135deg, #6c63ff 0%, #ff6b9d 100%);
    --gradient-bg: linear-gradient(180deg, #0a0a0f 0%, #12121a 50%, #0a0a0f 100%);
    --border-color: rgba(108, 99, 255, 0.15);
    --border-hover: rgba(108, 99, 255, 0.4);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 80px;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f5f5fa;
    --bg-secondary: #eeeef5;
    --bg-tertiary: #e4e4f0;
    --bg-card: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #7a7a95;
    --accent-primary: #5a52e0;
    --accent-secondary: #00b894;
    --accent-tertiary: #e84393;
    --gradient-primary: linear-gradient(135deg, #5a52e0 0%, #00b894 100%);
    --gradient-secondary: linear-gradient(135deg, #5a52e0 0%, #e84393 100%);
    --gradient-bg: linear-gradient(180deg, #f5f5fa 0%, #eeeef5 50%, #f5f5fa 100%);
    --border-color: rgba(90, 82, 224, 0.15);
    --border-hover: rgba(90, 82, 224, 0.4);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(90, 82, 224, 0.1);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(245, 245, 250, 0.85);
}

[data-theme="light"] .cursor-glow {
    background: radial-gradient(circle, rgba(90, 82, 224, 0.04) 0%, transparent 70%);
}

[data-theme="light"] #particleCanvas {
    opacity: 0.3;
}

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

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

body,
body *:not(canvas):not(.typing-cursor) {
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

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

::selection {
    background: rgba(108, 99, 255, 0.3);
    color: var(--text-primary);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

/* ==========================================
   Cursor Glow
   ========================================== */
.cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 99, 255, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
}

/* ==========================================
   Particle Canvas
   ========================================== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ==========================================
   Layout
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    position: relative;
    padding: 50px 0;
    z-index: 1;
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: var(--transition);
    backdrop-filter: blur(0px);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

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

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

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

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(108, 99, 255, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* Nav action buttons (theme & lang) */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 16px;
}

.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.nav-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: rgba(108, 99, 255, 0.1);
}

.nav-btn .lang-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* ==========================================
   Hero
   ========================================== */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    padding: 120px 24px 80px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-tagline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
}

.tagline-emoji {
    font-size: 1.2rem;
}

.tagline-text {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-secondary);
    letter-spacing: 0.5px;
}

.hero-title {
    margin-bottom: 16px;
}

.hero-greeting {
    display: block;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.hero-name {
    display: block;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -2px;
}

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

.hero-roles {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--accent-primary);
    margin-bottom: 24px;
    min-height: 1.5em;
}

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

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

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-description strong {
    color: var(--text-primary);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(108, 99, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108, 99, 255, 0.4);
}

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

.btn-outline:hover {
    background: rgba(108, 99, 255, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

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

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 40px;
    justify-content: space-between;
    width: 100%;
}

.stat {
    text-align: center;
}

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

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

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Code Window */
.hero-visual {
    display: flex;
    justify-content: center;
}

.code-window {
    width: 100%;
    max-width: 480px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transition: var(--transition);
}

.code-window:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg), 0 0 60px rgba(108, 99, 255, 0.2);
    transform: translateY(-4px);
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.code-dots {
    display: flex;
    gap: 8px;
}

.code-window-controls {
    display: flex;
    gap: 2px;
}

.win-btn {
    width: 30px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    color: var(--text-muted);
    border-radius: 2px;
    transition: var(--transition);
}

.win-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.win-btn.close:hover {
    background: #e81123;
    color: #fff;
}

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

.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28c840; }

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

.code-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.8;
    overflow-x: hidden;
}

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

.code-keyword { color: #c678dd; }
.code-class { color: #e5c07b; }
.code-func { color: #61afef; }
.code-string { color: #98c379; }
.code-const { color: #d19a66; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    animation: float 2s ease-in-out infinite;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.mouse-wheel {
    width: 3px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 3px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 1.5s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

@keyframes scroll-wheel {
    0% { opacity: 1; top: 6px; }
    100% { opacity: 0; top: 20px; }
}

/* ==========================================
   Section Headers
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(108, 99, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-top: 16px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================
   About
   ========================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: start;
}

.image-frame {
    position: relative;
}

.about-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 3/4;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: var(--transition);
}

.image-placeholder i {
    font-size: 3rem;
    color: var(--accent-primary);
    opacity: 0.5;
}

.image-decoration {
    position: absolute;
    top: 16px;
    left: 16px;
    right: -16px;
    bottom: -16px;
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-lg);
    opacity: 0.2;
    z-index: -1;
}

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

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

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.highlight-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.highlight-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.highlight-card h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2px;
}

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

/* ==========================================
   Experience / Timeline
   ========================================== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
}

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 0;
    width: 32px;
    height: 32px;
    background: var(--bg-primary);
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--accent-primary);
    z-index: 1;
}

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

.timeline-content:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

.timeline-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 212, 170, 0.1);
    color: var(--accent-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 12px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.timeline-company,
.timeline-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-right: 16px;
}

.timeline-content p {
    color: var(--text-secondary);
    margin-top: 12px;
    font-size: 0.95rem;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tag {
    padding: 4px 12px;
    background: rgba(108, 99, 255, 0.1);
    border: 1px solid rgba(108, 99, 255, 0.2);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--accent-primary);
}

/* ==========================================
   Skills
   ========================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

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

.skill-category:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.skill-category-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    color: white;
    font-size: 1.2rem;
}

.skill-category h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: rgba(108, 99, 255, 0.03);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.skill-item:hover {
    background: rgba(108, 99, 255, 0.08);
    border-color: var(--border-color);
}

.skill-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-secondary);
    font-size: 1rem;
}

.skill-item span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ==========================================
   Projects
   ========================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-8px);
}

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.project-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    font-size: 3rem;
    color: var(--accent-primary);
    opacity: 0.3;
}

.project-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 15, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-primary);
    border-radius: 50%;
    color: white;
    font-size: 1.1rem;
    transform: translateY(10px);
    transition: var(--transition);
}

.project-card:hover .project-link {
    transform: translateY(0);
}

.project-link:hover {
    background: var(--accent-secondary);
    transform: scale(1.1) !important;
}

.project-info {
    padding: 24px;
}

.project-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.project-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tags span {
    padding: 4px 12px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.2);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--accent-secondary);
}

/* ==========================================
   Contact
   ========================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
    align-items: start;
}

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

a.contact-card {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

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

.contact-card:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.contact-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-card h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.contact-card a,
.contact-card span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.contact-card a:hover {
    color: var(--accent-primary);
}

/* Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    padding-top: 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

.form-group label {
    position: absolute;
    left: 20px;
    top: 20px;
    font-size: 0.9rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: var(--transition);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: 8px;
    font-size: 0.7rem;
    color: var(--accent-primary);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    position: relative;
    z-index: 1;
    padding: 48px 0;
    border-top: 1px solid var(--border-color);
}

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

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.footer-socials a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

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

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 140px;
    }
    .hero-description { margin: 0 auto 32px; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { order: -1; }
    .code-window { max-width: 400px; }
    .about-grid { grid-template-columns: 1fr; }
    .about-image { max-width: 280px; margin: 0 auto; }
    .skills-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hero-visual { display: none; }
    .scroll-indicator { bottom: 4px; }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        padding: 100px 32px;
        gap: 8px;
        transition: var(--transition);
    }
    .nav-menu.active { right: 0; }
    .nav-menu li { width: 100%; }
    .nav-menu .nav-link { display: block; padding: 10px 16px; }
    .nav-toggle { display: flex; }
    .section { padding: 36px 0; }
    .hero-name { font-size: 2.2rem !important; }
    .hero-stats { flex-direction: row; gap: 12px; flex-wrap: nowrap; }
    .about-highlights { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
    .contact-form { padding: 24px; }
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    transform: translateY(-3px);
}