:root {
  --bg: #0b0f14;
  --panel: #0f1117;
  --text: #e7e9ee;
  --muted: #9aa0aa;
  --primary: #8b5cf6; /* violet */
  --primary-strong: #7c3aed; /* stronger violet */
  --accent: #22d3ee; /* cyan accent */
  --border: #1f2330;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.24);
}

html[data-theme="light"] {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #7c3aed;
  --primary-strong: #6d28d9;
  --accent: #06b6d4;
  --border: #e2e8f0;
  --shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

/* Reset some basics  */
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell,
    Noto Sans, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(
      1200px 600px at 80% -10%,
      color-mix(in oklab, var(--primary) 22%, transparent),
      transparent 60%
    ),
    radial-gradient(
      800px 400px at -10% 30%,
      color-mix(in oklab, var(--accent) 16%, transparent),
      transparent 60%
    ),
    var(--bg);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
  border-radius: 12px;
}
a {
  color: inherit;
  text-decoration: none;
}
p {
  margin: 0 0 16px;
}
h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 10px;
}
h1 {
  font-size: clamp(32px, 2.8vw + 16px, 52px);
}
h2 {
  font-size: clamp(22px, 1.4vw + 16px, 32px);
}
h3 {
  font-size: 18px;
}

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

.section {
  padding: 72px 0;
}
.muted {
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.2px;
}

.nav {
  position: relative;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  cursor: pointer;
}
.nav-toggle .bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  margin: 4px auto;
  border-radius: 2px;
}

.nav-menu {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}
.nav-menu a {
  display: inline-block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--muted);
}
.nav-menu a:hover,
.nav-menu a:focus {
  color: var(--text);
  background: var(--panel);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--primary) 18%, transparent)
    inset;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  height: 40px;
  width: 40px;
  cursor: pointer;
}

.hero {
  padding: 96px 0 72px;
}
.hero-inner {
  text-align: left;
}
.eyebrow {
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 14px;
}
.tagline {
  font-size: 18px;
  color: var(--muted);
  max-width: 60ch;
}
.actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  transition: transform 120ms ease, background 120ms ease, border 120ms ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in oklab, var(--primary) 28%, transparent);
}
.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  border-color: transparent;
}
.btn.primary:hover {
  background: linear-gradient(135deg, var(--primary-strong), var(--accent));
}
.btn.small {
  padding: 8px 12px;
  font-size: 15px;
}

.grid {
  display: grid;
  gap: 28px;
  align-items: start;
}
.grid.two {
  grid-template-columns: 1.1fr 0.9fr;
}

.about-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 12px;
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.chip-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
}
.chip-list li {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 12px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: clip;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.card img {
  aspect-ratio: 5/3;
  object-fit: cover;
}
.card-body {
  padding: 14px;
}
.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.card:hover {
  transform: translateY(-4px);
  transition: transform 160ms ease;
  border-color: color-mix(in oklab, var(--primary) 55%, var(--border));
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
}

.awards-list {
  margin: 12px 0 0;
  padding-left: 18px;
}
.awards-list li {
  margin: 6px 0;
}

.repo-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
}
.repo-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 14px;
  margin-top: 8px;
}
.repo-meta .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  background: var(--muted);
}

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1;
  background: color-mix(in oklab, var(--primary) 85%, #0000);
  color: #fff;
}
.badge.capstone {
  background: var(--primary-strong);
}

.capstone-wrap {
  margin-top: 12px;
}
.video-embed {
  aspect-ratio: 16/9;
  width: 100%;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.video-embed iframe,
.video-embed video {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}
.contact-list li {
  margin: 6px 0;
}
.contact-card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 12px;
  padding: 14px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  color: var(--muted);
}

@media (max-width: 860px) {
  .grid.two {
    grid-template-columns: 1fr;
  }
  .header-inner {
    grid-template-columns: 1fr auto auto;
  }
  .nav-toggle {
    display: inline-block;
  }
  .nav-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    flex-direction: column;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 8px;
    display: none;
    min-width: 180px;
  }
  .nav-menu.open {
    display: flex;
  }
}

section {
  scroll-margin-top: 80px;
}