@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #08090a;
  --surface: #111214;
  --surface-hover: #18191c;
  --border: #1e1f22;
  --text: #e0e0e0;
  --text-muted: #7a7a7d;
  --text-dim: #505055;
  --accent: #d4a853;
  --accent-glow: rgba(212, 168, 83, 0.15);
  --radius: 12px;
  --max-w: 1100px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

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

.section {
  padding: 100px 0;
}

/* ---- Nav ---- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s, box-shadow 0.3s;
}

.nav.scrolled {
  background: rgba(8, 9, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s;
}

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

/* ---- Hero ---- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
}

.hero-content {
  max-width: 680px;
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero-name {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -2px;
  color: #fff;
  margin-bottom: 16px;
}

.hero-title {
  font-size: 20px;
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: 24px;
  line-height: 1.5;
}

.hero-title span {
  color: var(--text);
}

.hero-location {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-location::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
}

.btn-primary:hover {
  background: #e0b860;
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: #444;
  background: var(--surface);
}

/* ---- Section Headers ---- */

.section-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1px;
  color: #fff;
  margin-bottom: 48px;
}

/* ---- About ---- */

#about {
  border-top: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.stat-number {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

/* ---- Skills ---- */

#skills {
  border-top: 1px solid var(--border);
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  padding: 8px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s;
}

.skill-tag:hover {
  border-color: #444;
  background: var(--surface-hover);
}

.skill-tag.highlight {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ---- Open Source ---- */

#opensource {
  border-top: 1px solid var(--border);
}

.oss-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.oss-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s;
}

.oss-card:hover {
  border-color: #333;
  transform: translateY(-2px);
}

.oss-card.featured {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--surface) 0%, rgba(212, 168, 83, 0.03) 100%);
}

.oss-name {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 6px;
  letter-spacing: -0.3px;
}

.oss-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.oss-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-dim);
}

.oss-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.oss-lang {
  padding: 3px 8px;
  background: var(--bg);
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

/* ---- Work ---- */

#work {
  border-top: 1px solid var(--border);
}

.work-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

.work-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: border-color 0.2s, transform 0.2s;
}

.work-card:hover {
  border-color: #333;
  transform: translateY(-2px);
}

.work-card img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.work-info {
  padding: 16px 18px 18px;
  background: var(--surface);
}

.work-tag {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.work-name {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.2px;
}

/* ---- Footer ---- */

.footer {
  border-top: 1px solid var(--border);
  padding: 64px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 64px;
}

.footer-cta {
  font-size: 24px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.footer-email {
  font-size: 16px;
  color: var(--accent);
  font-weight: 500;
  transition: color 0.2s;
}

.footer-email:hover {
  color: #e0b860;
}

.footer-heading {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.footer-sponsor {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid #333;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: #f472b6;
  transition: border-color 0.2s, background 0.2s;
  margin-top: 8px;
}

.footer-sponsor:hover {
  border-color: #f472b6;
  background: rgba(244, 114, 182, 0.06);
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-dim);
}

/* ---- Animations ---- */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ---- Mobile Responsive ---- */

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .hero-name {
    font-size: 36px;
    letter-spacing: -1.5px;
  }

  .hero-title {
    font-size: 17px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .oss-grid,
  .work-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section-title {
    font-size: 26px;
  }

  .nav-links {
    display: none;
  }
}