:root {
  --bg: #0b0c10;
  --bg-elev: #121318;
  --text: #e5e7eb;
  --muted: #a1a1aa;
  --brand: #6ee7b7;
  --brand-strong: #34d399;
  --card: #0f1115;
  --border: #1f2430;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

[data-theme="light"] {
  --bg: #ffffff;
  --bg-elev: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --brand: #2563eb;
  --brand-strong: #1d4ed8;
  --card: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 6px 20px rgba(2, 6, 23, 0.08);
}

* {
  box-sizing: border-box;
}

html, body {
  padding: 0;
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  scroll-behavior: smooth;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  background: color-mix(in oklab, var(--bg), transparent 8%);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-nav a,
.theme-toggle {
  color: var(--text);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
}

.site-nav a:hover,
.theme-toggle:hover {
  border-color: var(--border);
  background: var(--bg-elev);
}

.theme-toggle {
  background: transparent;
}

.hero {
  padding: 80px 0 40px;
  position: relative;
  overflow: hidden;
}

.hero .container { display: grid; align-items: center; grid-template-columns: auto 1fr; gap: 20px; }
.hero-media { display: grid; place-items: center; }
.hero-avatar {
  width: clamp(84px, 14vw, 140px);
  height: clamp(84px, 14vw, 140px);
  border-radius: 999px;
  object-fit: cover;
  border: 2px solid var(--border);
  box-shadow: var(--shadow);
}

.hero h1 {
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.1;
  margin: 0 0 12px;
}

.hero p {
  color: var(--muted);
  margin: 0 0 24px;
}

/* Animated hero background */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 80%;
  background: radial-gradient(600px 300px at 20% 60%, color-mix(in oklab, var(--brand), transparent 65%), transparent 70%),
              radial-gradient(500px 240px at 80% 40%, color-mix(in oklab, var(--brand-strong), transparent 75%), transparent 70%);
  filter: blur(26px) saturate(120%);
  transform: translateZ(0);
  pointer-events: none;
}
.hero::after {
  animation: floatGlow 12s ease-in-out infinite;
  opacity: 0.7;
}

@keyframes floatGlow {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(0, -12px, 0) scale(1.02); }
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  left: 50%;
  bottom: 8px;
  transform: translateX(-50%);
  width: 28px;
  height: 44px;
  border-radius: 16px;
  border: 2px solid color-mix(in oklab, var(--text), transparent 40%);
  display: grid;
  place-items: start center;
}
.scroll-indicator span {
  display: block;
  width: 4px;
  height: 8px;
  margin-top: 6px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--text), transparent 20%);
  animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(20px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

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

.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  background: var(--bg-elev);
  box-shadow: var(--shadow);
}

.btn { transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(0,0,0,0.25); }

.btn.primary {
  background: var(--brand);
  border-color: color-mix(in oklab, var(--brand-strong), transparent 40%);
  color: white;
}

.btn.small { padding: 8px 12px; }

.section { padding: 56px 0; }
.section h2 {
  margin: 0 0 20px;
  font-size: 28px;
}

.grid {
  display: grid;
  gap: 16px;
}

.projects-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.skills-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.evidence-list {
  margin: 8px 0 0;
  padding-left: 18px;
}
.evidence-list li {
  margin: 6px 0;
}
.evidence-list a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.evidence-list a:hover {
  color: var(--brand);
}

.card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--shadow);
}

/* Project thumbnails */
.project .thumb {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  aspect-ratio: 16 / 9;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
}
.project .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 0.5s ease, filter 0.5s ease;
}
.project:hover .thumb img {
  transform: scale(1.06);
  filter: saturate(1.08);
}

/* About avatar */
.about-media { margin: 14px 0 6px; }
.about-avatar {
  width: 92px;
  height: 92px;
  border-radius: 999px;
  object-fit: cover;
  border: 2px solid var(--border);
  box-shadow: var(--shadow);
}

.card { transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease; }
.card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(0,0,0,0.28); border-color: color-mix(in oklab, var(--brand), transparent 60%); }

.project h3 { margin: 0 0 6px; }
.project p { margin: 0 0 12px; color: var(--muted); }
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.tags span { font-size: 12px; border: 1px solid var(--border); padding: 2px 8px; border-radius: 999px; }

.project-detail .thumb {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  float: right;
  width: clamp(160px, 32%, 300px);
  margin: 4px 0 12px 16px;
}
.project-detail .thumb img {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.about-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px 16px;
  padding: 0;
  margin: 12px 0 0;
  list-style: none;
}

.contact-form { margin-top: 8px; }
.form-grid { grid-template-columns: repeat(2, 1fr); }
.form-grid .full { grid-column: 1 / -1; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
}
.contact-form label { display: grid; gap: 6px; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Header on scroll */
.site-header.scrolled {
  background: color-mix(in oklab, var(--bg), transparent 2%);
  border-bottom-color: color-mix(in oklab, var(--border), transparent 25%);
  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
}

/* Reveal on scroll */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 760px) {
  .menu-toggle { display: inline-block; }
  .site-nav { position: fixed; inset: 56px 12px auto; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px; display: none; flex-direction: column; }
  .site-nav.open { display: flex; }
  .form-grid { grid-template-columns: 1fr; }
  .project-detail .thumb { float: none; width: 100%; margin: 0 0 12px 0; }
}