/* ============================================
   CoderLine Portfolio — Main Styles
   Modern dark theme with glass morphism
   ============================================ */

/* --- CSS Variables --- */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-card: rgba(17, 17, 24, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-glass-hover: rgba(255, 255, 255, 0.06);

    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-muted: #555570;

    --accent-primary: #6C5CE7;
    --accent-secondary: #00D4AA;
    --accent-tertiary: #FF6B6B;
    --accent-warning: #FECA57;
    --accent-info: #54A0FF;

    --gradient-primary: linear-gradient(135deg, #6C5CE7 0%, #00D4AA 100%);
    --gradient-accent: linear-gradient(135deg, #6C5CE7 0%, #a855f7 50%, #00D4AA 100%);
    --gradient-glow: linear-gradient(135deg, rgba(108, 92, 231, 0.4) 0%, rgba(0, 212, 170, 0.4) 100%);

    --border-color: rgba(255, 255, 255, 0.06);
    --border-glow: rgba(108, 92, 231, 0.3);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;

    --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, 92, 231, 0.15);

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: rgba(108, 92, 231, 0.4);
    color: #fff;
}

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

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

/* --- Background Canvas --- */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* --- Cursor Glow --- */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
}

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

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 14px 0;
    background: rgba(10, 10, 15, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: padding 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    padding: 8px 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 44px;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 2px;
    z-index: 1001;
    white-space: nowrap;
    flex-shrink: 0;
    text-decoration: none;
    line-height: 1;
}

.logo-bracket {
    color: var(--accent-primary);
    font-weight: 400;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 6px;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.86rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.25s ease;
    position: relative;
    white-space: nowrap;
    border: 1px solid transparent;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
    color: #fff;
    background: rgba(108, 92, 231, 0.18);
    border-color: rgba(108, 92, 231, 0.35);
    box-shadow: 0 2px 12px rgba(108, 92, 231, 0.15);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
    z-index: 2;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 100px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--accent-secondary);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-secondary);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.4); }
    50% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(0, 212, 170, 0); }
}

.hero-title {
    margin-bottom: 24px;
}

.hero-line {
    display: block;
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.4;
}

.hero-name {
    display: block;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin: 8px 0;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradient-shift 4s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

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

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-main);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.5);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: var(--transition);
}

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

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    background: rgba(108, 92, 231, 0.1);
    transform: translateY(-2px);
}

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

/* --- Hero Stats --- */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    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;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* --- Hero Visual (Code Window) --- */
.hero-visual {
    flex: 1;
    max-width: 520px;
}

.code-window {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    backdrop-filter: blur(20px);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
}

.code-dots {
    display: flex;
    gap: 6px;
}

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

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.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: 0.85rem;
    line-height: 1.8;
    min-height: 280px;
    overflow: hidden;
}

.code-body code {
    white-space: pre;
}

/* --- Scroll Indicator --- */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    animation: float 3s 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 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* --- Sections --- */
.section {
    padding: 120px 0;
    position: relative;
    z-index: 2;
}

.section-dark {
    background: var(--bg-secondary);
}

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

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-primary);
    display: block;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

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

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
}

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

.highlight:hover {
    border-color: var(--border-glow);
    background: var(--bg-glass-hover);
    transform: translateX(8px);
}

.highlight-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.highlight h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.highlight p {
    font-size: 0.85rem !important;
    margin-bottom: 0 !important;
    color: var(--text-muted) !important;
}

/* --- Terminal --- */
.terminal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 2;
}

.terminal-line {
    display: flex;
    gap: 8px;
}

.prompt {
    color: var(--accent-secondary);
    user-select: none;
}

.cmd {
    color: var(--accent-info);
}

.terminal-output {
    color: var(--text-secondary);
    padding-left: 20px;
}

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

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

/* --- Skills Section --- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.skill-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
    cursor: default;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.5s ease forwards;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--skill-color, var(--gradient-primary));
    opacity: 0;
    transition: var(--transition);
}

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

.skill-card:hover::before {
    opacity: 1;
}

.skill-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.skill-name {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.skill-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.skill-bar-fill {
    height: 100%;
    border-radius: 4px;
    background: var(--skill-color, var(--gradient-primary));
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* --- Projects Section --- */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-slow);
    position: relative;
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 0.6s ease forwards;
}

.project-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-4px);
}

.project-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.project-preview {
    position: relative;
    min-height: 320px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.project-preview-bg {
    position: absolute;
    inset: 0;
    opacity: 0.15;
    transition: var(--transition-slow);
}

.project-card:hover .project-preview-bg {
    opacity: 0.25;
    transform: scale(1.05);
}

/* --- Project Browser Mockup with Screenshot --- */
.project-mockup-link {
    display: block;
    width: 100%;
    text-decoration: none;
    position: relative;
    z-index: 2;
}

.project-mockup {
    width: 100%;
    background: rgba(15, 15, 24, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 35px rgba(108, 92, 231, 0.2);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.4s ease;
}

.project-card:hover .project-mockup {
    transform: translateY(-4px) scale(1.02);
    border-color: rgba(108, 92, 231, 0.45);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.6), 0 0 45px rgba(108, 92, 231, 0.35);
}

.project-mockup-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.mockup-dots {
    display: flex;
    gap: 5px;
}

.mockup-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.mockup-dot.red { background: #ff5f57; }
.mockup-dot.yellow { background: #febc2e; }
.mockup-dot.green { background: #28c840; }

.mockup-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: rgba(0, 0, 0, 0.35);
    padding: 2px 10px;
    border-radius: 100px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.mockup-lock {
    font-size: 0.65rem;
}

.mockup-url {
    color: var(--accent-secondary);
    letter-spacing: 0.02em;
}

.project-image-box {
    position: relative;
    overflow: hidden;
    width: 100%;
    background: #0a0a12;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    object-position: top center;
    transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), filter 0.4s ease;
    image-rendering: -webkit-optimize-contrast;
    filter: brightness(0.96) contrast(1.02);
}

.project-card:hover .project-img {
    transform: scale(1.03);
    filter: brightness(1.02) contrast(1.04);
}

.project-img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 10, 15, 0.75) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 12px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.project-view-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--gradient-primary);
    color: #fff;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
    transform: translateY(6px);
    transition: transform 0.3s ease;
}

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

.project-icon-large {
    font-size: 6rem;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 0 30px rgba(108, 92, 231, 0.3));
    animation: float-icon 4s ease-in-out infinite;
}

@keyframes float-icon {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-8px) rotate(2deg); }
    75% { transform: translateY(4px) rotate(-1deg); }
}

.project-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.project-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 100px;
    background: rgba(0, 212, 170, 0.1);
    color: var(--accent-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    width: fit-content;
}

.project-status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-secondary);
    animation: pulse-dot 2s infinite;
}

.project-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.project-subtitle {
    font-size: 1rem;
    color: var(--accent-primary);
    margin-bottom: 16px;
    font-weight: 500;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

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

.project-feature {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.project-feature::before {
    content: '✦';
    color: var(--accent-primary);
    font-size: 0.7rem;
}

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

.project-tag {
    padding: 4px 12px;
    border-radius: 100px;
    background: rgba(108, 92, 231, 0.1);
    color: var(--accent-primary);
    font-size: 0.8rem;
    font-weight: 500;
    font-family: var(--font-mono);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-secondary);
    font-weight: 600;
    transition: var(--transition);
}

.project-link:hover {
    gap: 12px;
    color: #fff;
}

.project-link svg {
    transition: var(--transition);
}

.project-link:hover svg {
    transform: translateX(4px);
}

/* --- Contact Section --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.3;
}

.contact-info > p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

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

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

.contact-link:hover {
    border-color: var(--border-glow);
    background: var(--bg-glass-hover);
    transform: translateX(8px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: rgba(108, 92, 231, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.contact-link-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-link-value {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
}

/* --- Contact Form --- */
.contact-form {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    backdrop-filter: blur(20px);
}

.form-group {
    position: relative;
    margin-bottom: 24px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 0 8px;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-main);
    outline: none;
    transition: var(--transition);
    resize: none;
}

.form-group label {
    position: absolute;
    top: 16px;
    left: 0;
    font-size: 1rem;
    color: var(--text-muted);
    transition: var(--transition);
    pointer-events: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-bottom-color: var(--accent-primary);
}

.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: -4px;
    font-size: 0.75rem;
    color: var(--accent-primary);
}

.form-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.form-group input:focus ~ .form-line,
.form-group textarea:focus ~ .form-line {
    width: 100%;
}

.form-status {
    margin-top: 16px;
    text-align: center;
    font-size: 0.9rem;
    min-height: 24px;
}

.form-status.success {
    color: var(--accent-secondary);
}

.form-status.error {
    color: var(--accent-tertiary);
}

/* --- Footer --- */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 2;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.footer-domain {
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

/* --- Scroll Animations --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Loading Skeleton --- */
.skeleton {
    background: linear-gradient(90deg,
        var(--bg-glass) 25%,
        rgba(255,255,255,0.06) 50%,
        var(--bg-glass) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-card {
    height: 200px;
    border: 1px solid var(--border-color);
}

/* ============================================
   RESPONSIVE DESIGN — Full Mobile Adaptation
   ============================================ */

/* --- Touch Device Optimizations --- */
@media (hover: none) and (pointer: coarse) {
    /* Disable hover transforms on touch — prevent sticky hover states */
    .highlight:hover,
    .contact-link:hover {
        transform: none;
    }

    .project-card:hover {
        transform: none;
        box-shadow: none;
    }

    .skill-card:hover {
        transform: none;
        box-shadow: none;
    }

    /* Ensure minimum tap target size (44×44px per WCAG) */
    .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .btn {
        min-height: 48px;
    }

    .contact-link {
        min-height: 56px;
    }

    /* Hide cursor glow on touch devices */
    .cursor-glow {
        display: none;
    }
}

/* --- Large Desktop (≤1200px) --- */
@media (max-width: 1200px) {
    .hero {
        gap: 40px;
        padding-left: 32px;
        padding-right: 32px;
    }

    .hero-visual {
        max-width: 460px;
    }

    .container {
        padding: 0 32px;
    }
}

/* --- Tablet Landscape / Small Desktop (≤992px) --- */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 130px;
        padding-bottom: 60px;
        gap: 48px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        max-width: 560px;
        width: 100%;
    }

    .hero-badge {
        margin-left: auto;
        margin-right: auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .project-inner {
        grid-template-columns: 1fr;
    }

    .project-preview {
        min-height: auto;
        padding: 24px;
    }

    .project-content {
        padding: 32px;
    }

    .project-title {
        font-size: 1.5rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-info h3 {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: clamp(1.8rem, 4vw, 2.5rem);
    }
}

/* --- Tablet Portrait / Large Phone (≤768px) --- */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 20px;
    }

    /* Mobile Navigation — Full-screen overlay */
    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100vh;
        height: 100dvh; /* Dynamic viewport height — avoids address bar issues */
        flex-direction: column;
        align-items: center;
        justify-content: center;
        background: rgba(10, 10, 15, 0.97);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        padding: 80px 40px 40px;
        gap: 8px;
        transition: var(--transition-slow);
        opacity: 0;
        visibility: hidden;
        z-index: 999;
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        font-size: 1.2rem;
        padding: 14px 24px;
        width: 100%;
        max-width: 280px;
        text-align: center;
        border-radius: var(--radius-md);
    }

    .nav-link.active::after {
        bottom: 8px;
        width: 30px;
    }

    .nav-toggle {
        display: flex;
    }

    /* Hero */
    .hero {
        padding-top: 120px;
        padding-bottom: 40px;
        min-height: calc(100vh - 60px);
        min-height: calc(100dvh - 60px);
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
        justify-content: center;
    }

    .stat-divider {
        display: none;
    }

    .stat {
        min-width: 80px;
    }

    .stat-number {
        font-size: 1.6rem;
    }

    /* Code Window */
    .code-window {
        border-radius: var(--radius-md);
    }

    .code-body {
        padding: 16px;
        font-size: 0.75rem;
        min-height: 220px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Skills */
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .skill-card {
        padding: 18px 14px;
    }

    .skill-icon {
        font-size: 1.6rem;
        margin-bottom: 8px;
    }

    .skill-name {
        font-size: 0.85rem;
    }

    /* Projects */
    .project-icon-large {
        font-size: 4.5rem;
    }

    .project-features {
        gap: 6px;
    }

    .project-feature {
        font-size: 0.75rem;
        padding: 5px 10px;
    }

    .project-tags {
        gap: 6px;
    }

    .project-tag {
        font-size: 0.75rem;
        padding: 3px 10px;
    }

    /* Contact */
    .contact-form {
        padding: 24px;
        border-radius: var(--radius-lg);
    }

    .contact-link {
        padding: 14px 16px;
        gap: 12px;
    }

    .contact-icon {
        width: 42px;
        height: 42px;
    }

    .contact-link-value {
        font-size: 0.9rem;
    }

    /* Terminal */
    .terminal-body {
        padding: 16px;
        font-size: 0.75rem;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Sections */
    .section {
        padding: 72px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-subtitle {
        font-size: 0.95rem;
    }

    /* Scroll indicator */
    .scroll-indicator {
        display: none;
    }

    /* About */
    .highlight {
        padding: 16px;
    }

    .highlight-icon {
        font-size: 1.3rem;
    }

    .highlight h4 {
        font-size: 0.9rem;
    }

    /* Footer */
    .footer {
        padding: 32px 0;
        padding-bottom: calc(32px + env(safe-area-inset-bottom, 0px));
    }
}

/* --- Phone (≤480px) --- */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 16px;
    }

    /* Hero */
    .hero {
        padding-top: 110px;
        padding-left: 16px;
        padding-right: 16px;
        gap: 36px;
    }

    .hero-name {
        font-size: 2.2rem;
    }

    .hero-line {
        font-size: 1rem;
    }

    .hero-badge {
        font-size: 0.78rem;
        padding: 6px 14px;
    }

    .hero-description {
        font-size: 0.9rem;
        margin-bottom: 24px;
    }

    .hero-stats {
        gap: 16px;
    }

    /* Skills — two columns on small phones */
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .skill-card {
        padding: 14px 10px;
    }

    .skill-icon {
        font-size: 1.4rem;
    }

    .skill-name {
        font-size: 0.8rem;
        margin-bottom: 8px;
    }

    .skill-level {
        font-size: 0.7rem;
    }

    /* Projects */
    .project-content {
        padding: 24px 20px;
    }

    .project-preview {
        min-height: auto;
        padding: 14px;
    }

    .project-icon-large {
        font-size: 3.5rem;
    }

    .project-title {
        font-size: 1.3rem;
    }

    .project-subtitle {
        font-size: 0.9rem;
    }

    .project-description {
        font-size: 0.85rem;
        margin-bottom: 16px;
    }

    .project-card {
        border-radius: var(--radius-lg);
    }

    /* Contact form */
    .contact-form {
        padding: 20px 16px;
        border-radius: var(--radius-md);
    }

    .form-group input,
    .form-group textarea {
        font-size: 16px; /* Prevents iOS auto-zoom on focus */
    }

    .contact-info h3 {
        font-size: 1.3rem;
    }

    /* About */
    .about-text p {
        font-size: 0.95rem;
    }

    .about-highlights {
        gap: 12px;
    }

    .highlight {
        padding: 14px;
        gap: 12px;
    }

    /* Nav */
    .nav-logo {
        font-size: 1.1rem;
    }

    .navbar.scrolled {
        padding: 10px 0;
    }

    /* Section */
    .section {
        padding: 56px 0;
    }

    .section-tag {
        font-size: 0.75rem;
    }

    .section-header {
        margin-bottom: 32px;
    }
}

/* --- Very Small Phone (≤360px) --- */
@media (max-width: 360px) {
    .hero-name {
        font-size: 1.8rem;
    }

    .hero-line {
        font-size: 0.9rem;
    }

    .skills-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .skill-card {
        padding: 12px 8px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 12px;
    }

    .stat {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .stat-number {
        font-size: 1.4rem;
    }

    .stat-label {
        margin-top: 0;
    }

    .project-features {
        flex-direction: column;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.85rem;
    }
}

/* --- Landscape Phone Optimization --- */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        flex-direction: row;
        min-height: auto;
        padding-top: 80px;
        padding-bottom: 20px;
        gap: 24px;
    }

    .hero-content {
        text-align: left;
    }

    .hero-actions {
        justify-content: flex-start;
        flex-direction: row;
    }

    .hero-stats {
        justify-content: flex-start;
    }

    .hero-badge {
        margin-left: 0;
        margin-right: 0;
    }

    .hero-visual {
        max-width: 40%;
    }

    .code-body {
        min-height: 180px;
    }

    .section {
        padding: 48px 0;
    }

    .scroll-indicator {
        display: none;
    }
}

/* --- Safe Area Insets (iPhone X+ notch/home indicator) --- */
@supports (padding: env(safe-area-inset-top)) {
    .navbar {
        padding-top: max(12px, env(safe-area-inset-top));
    }

    .navbar.scrolled {
        padding-top: max(8px, env(safe-area-inset-top));
    }

    @media (max-width: 768px) {
        .nav-links {
            padding-top: max(80px, calc(60px + env(safe-area-inset-top)));
        }
    }

    .hero {
        padding-left: max(24px, env(safe-area-inset-left));
        padding-right: max(24px, env(safe-area-inset-right));
    }

    .footer {
        padding-bottom: max(40px, calc(32px + env(safe-area-inset-bottom)));
    }
}

/* --- Reduced Motion Preference --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }

    .gradient-text {
        animation: none;
    }

    .scroll-indicator {
        display: none;
    }
}

/* --- Print Styles --- */
@media print {
    #bg-canvas,
    .cursor-glow,
    .navbar,
    .scroll-indicator,
    .nav-toggle {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .section, .section-dark {
        padding: 24px 0;
        background: #fff;
    }

    .gradient-text {
        -webkit-text-fill-color: #333;
        color: #333;
    }
}