:root {
    --bg: #06060e;
    --bg-alt: #0a0b16;
    --bg-card: #0c0d1a;
    --bg-card-hover: #101228;
    --text: #e4e4ef;
    --text-dim: #6e6e8e;
    --text-muted: #3a3a5a;
    --accent: #58a6ff;
    --accent-soft: #79b8ff;
    --accent-glow: rgba(88, 166, 255, 0.35);
    --accent2: #06b6d4;
    --accent2-glow: rgba(6, 182, 212, 0.25);
    --green: #22c55e;
    --orange: #f97316;
    --pink: #ec4899;
    --border: #16183a;
    --border-hover: #282a5a;
    --radius: 14px;
    --radius-sm: 8px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

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

/* ─── Navigation ─── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 14px 24px;
    transition: background 0.3s, box-shadow 0.3s;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(6, 6, 14, 0.6);
}

nav.scrolled {
    background: rgba(6, 6, 14, 0.92);
    box-shadow: 0 1px 0 var(--border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

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

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

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    transition: color 0.2s;
    letter-spacing: 0.01em;
}

.nav-links a:hover { color: var(--accent-soft); }

/* ─── Hero ─── */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 100px 24px 60px;
}

.hero-content {
    flex: 1;
    max-width: 560px;
}

.hero-badge {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--accent-soft);
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 20px;
    padding: 5px 14px;
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 18px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 50%, var(--pink) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 5s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-desc {
    font-size: 1rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin-bottom: 30px;
    max-width: 480px;
}

.hero-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s;
    font-family: inherit;
}

.btn-primary:hover {
    background: #7c3aed;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-primary.btn-lg {
    padding: 14px 36px;
    font-size: 0.95rem;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s;
    font-family: inherit;
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent-soft);
    transform: translateY(-2px);
}

/* ─── Orbit visual ─── */
.hero-visual {
    position: relative;
    width: 320px;
    height: 320px;
    flex-shrink: 0;
}

.orbit-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(139, 92, 246, 0.08);
}

.ring-1 {
    inset: 30px;
    animation: spinSlow 30s linear infinite;
}
.ring-2 {
    inset: 60px;
    border-color: rgba(6, 182, 212, 0.08);
    animation: spinSlow 22s linear infinite reverse;
}
.ring-3 {
    inset: 90px;
    border-color: rgba(236, 72, 153, 0.06);
    animation: spinSlow 18s linear infinite;
}

.orbit-core {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 64px; height: 64px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12), transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 40px var(--accent-glow);
}

.core-glow {
    position: absolute;
    inset: -14px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent 70%);
    animation: coreBreath 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes coreBreath {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.5); opacity: 1; }
}

.orbit-core svg {
    width: 26px;
    height: 26px;
    stroke: var(--accent-soft);
    stroke-width: 1.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 0 6px var(--accent-glow));
}

.orbit-node {
    position: absolute;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(12, 13, 26, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    cursor: default;
}

.orbit-node:hover {
    transform: scale(1.2);
    box-shadow: 0 0 20px var(--accent-glow);
    border-color: var(--accent);
}

.orbit-node svg {
    width: 16px;
    height: 16px;
    stroke: var(--text-dim);
    stroke-width: 1.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: stroke 0.3s;
}

.orbit-node:hover svg {
    stroke: var(--accent-soft);
}

.node-1 { top: 8%; left: 50%; transform: translateX(-50%); }
.node-2 { top: 30%; right: 4%; }
.node-3 { bottom: 12%; right: 12%; }
.node-4 { bottom: 12%; left: 12%; }
.node-5 { top: 30%; left: 4%; }

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

/* ─── Ticker ─── */
.ticker {
    position: relative;
    z-index: 1;
    overflow: hidden;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-alt);
    padding: 10px 0;
    white-space: nowrap;
}

.ticker-track {
    display: inline-flex;
    animation: tickerScroll 40s linear infinite;
}

.ticker-track span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    padding: 0 24px;
    letter-spacing: 0.05em;
}

.ticker-track .highlight {
    color: var(--accent-soft);
}

@keyframes tickerScroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ─── Sections ─── */
.section {
    position: relative;
    z-index: 1;
    padding: 80px 24px;
}

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

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--accent2);
    background: rgba(6, 182, 212, 0.06);
    border: 1px solid rgba(6, 182, 212, 0.12);
    border-radius: 12px;
    padding: 3px 12px;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.section-desc {
    color: var(--text-dim);
    font-size: 0.9rem;
    max-width: 460px;
    margin: 0 auto;
}

/* ─── Projects grid ─── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.3s;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    opacity: 0;
    transition: opacity 0.3s;
}

.project-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(139, 92, 246, 0.06);
}

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

.project-icon-wrap {
    width: 42px;
    height: 42px;
    border-radius: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    position: relative;
    transition: box-shadow 0.3s, transform 0.3s;
}

.project-icon-wrap svg {
    width: 20px;
    height: 20px;
    stroke: rgba(255, 255, 255, 0.9);
    stroke-width: 1.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.project-card:hover .project-icon-wrap {
    transform: scale(1.08);
    filter: brightness(1.15);
}

.project-name {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-name .arrow {
    opacity: 0;
    transition: opacity 0.2s, transform 0.2s;
    font-size: 0.8rem;
    color: var(--accent-soft);
}

.project-card:hover .project-name .arrow {
    opacity: 1;
    transform: translateX(3px);
}

.project-desc {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 16px;
}

.project-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.project-lang {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.7rem;
    color: var(--text-dim);
    font-family: 'JetBrains Mono', monospace;
}

.lang-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.project-stars {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.project-tag {
    font-size: 0.58rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(139, 92, 246, 0.08);
    color: var(--accent-soft);
    padding: 2px 8px;
    border-radius: 6px;
}

.project-tag.live {
    background: rgba(34, 197, 94, 0.08);
    color: var(--green);
}

/* Loading */
.loading-indicator {
    text-align: center;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-dim);
    font-size: 0.82rem;
}

.loader {
    width: 20px; height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-indicator.hidden { display: none; }

/* ─── Skills ─── */
.skills-container {
    display: flex;
    flex-direction: column;
    gap: 28px;
    max-width: 960px;
    margin: 0 auto;
}

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

.skill-group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.skill-group-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.skill-group-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-dim);
}
.skill-group-subtitle {
    font-size: 0.72rem;
    color: var(--muted);
    margin-left: auto;
    font-weight: 400;
    letter-spacing: 0.01em;
    font-style: italic;
}

.skill-group-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
    font-size: 0.76rem;
    font-weight: 500;
    color: var(--text);
    transition: all 0.25s;
    cursor: default;
}

.skill-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.skill-badge .skill-dot {
    width: 5px; height: 5px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Accent colors for categories */
.accent-purple .skill-dot, .skill-group-dot.accent-purple { background: var(--accent); box-shadow: 0 0 6px var(--accent-glow); }
.skill-badge.accent-purple { border-color: rgba(88, 166, 255, 0.18); }
.skill-badge.accent-purple:hover { border-color: var(--accent); }

.accent-cyan .skill-dot, .skill-group-dot.accent-cyan { background: var(--accent2); box-shadow: 0 0 6px var(--accent2-glow); }
.skill-badge.accent-cyan { border-color: rgba(6, 182, 212, 0.14); }
.skill-badge.accent-cyan:hover { border-color: var(--accent2); }

.accent-green .skill-dot, .skill-group-dot.accent-green { background: var(--green); box-shadow: 0 0 6px rgba(34, 197, 94, 0.3); }
.skill-badge.accent-green { border-color: rgba(34, 197, 94, 0.14); }
.skill-badge.accent-green:hover { border-color: var(--green); }

.accent-orange .skill-dot, .skill-group-dot.accent-orange { background: var(--orange); box-shadow: 0 0 6px rgba(249, 115, 22, 0.3); }
.skill-badge.accent-orange { border-color: rgba(249, 115, 22, 0.14); }
.skill-badge.accent-orange:hover { border-color: var(--orange); }

.accent-pink .skill-dot, .skill-group-dot.accent-pink { background: var(--pink); box-shadow: 0 0 6px rgba(236, 72, 153, 0.3); }
.skill-badge.accent-pink { border-color: rgba(236, 72, 153, 0.14); }
.skill-badge.accent-pink:hover { border-color: var(--pink); }

.accent-muted .skill-dot, .skill-group-dot.accent-muted { background: var(--text-dim); }
.skill-badge.accent-muted { border-color: rgba(110, 110, 142, 0.14); }
.skill-badge.accent-muted:hover { border-color: var(--text-dim); }

/* ─── Stats ─── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 700px;
    margin: 0 auto;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    transition: all 0.3s;
}

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

.stat-number {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 0.68rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ─── CTA ─── */
.cta-section {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}

.cta-inner {
    text-align: center;
    max-width: 520px;
    margin: 0 auto;
}

.cta-inner h2 {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.cta-inner p {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: 28px;
}

/* ─── Footer ─── */
footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
    padding: 20px 24px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
}

.footer-text {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ─── Fade-in animation ─── */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ─── Responsive ─── */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
        gap: 40px;
        padding-top: 120px;
    }

    .hero-content { max-width: 100%; }
    .hero-desc { max-width: 100%; margin-left: auto; margin-right: auto; }
    .hero-cta { justify-content: center; }
    .hero-visual { width: 260px; height: 260px; }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-links { gap: 16px; }
    .nav-links a { font-size: 0.75rem; }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .hero-visual { width: 220px; height: 220px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.8rem; }
    .hero-badge { font-size: 0.6rem; }

    .nav-links a:not(:last-child) { display: none; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .stat-number { font-size: 1.5rem; }

    .footer-inner { flex-direction: column; gap: 6px; }

    .orbit-node { width: 28px; height: 28px; }
    .orbit-node svg { width: 13px; height: 13px; }
}