:root {
  --bg: #0a0e14;
  --bg-alt: #0d1319;
  --surface: #10161f;
  --surface-hover: #141c27;
  --border: #202b38;
  --border-bright: #2c3b4c;
  --text: #e6edf3;
  --text-muted: #7d8a9a;
  --text-dim: #4d5866;
  --accent: #2ee6c5;
  --accent-2: #8b7bff;
  --accent-rgb: 46, 230, 197;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --max-width: 780px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  position: relative;
  min-height: 100vh;
}

/* background: dot grid + soft glow blobs */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  top: -10%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translateX(-50%);
  background:
    radial-gradient(circle at 30% 20%, rgba(var(--accent-rgb), 0.14), transparent 55%),
    radial-gradient(circle at 70% 10%, rgba(139, 123, 255, 0.12), transparent 55%);
  pointer-events: none;
  z-index: 0;
}

header,
main,
footer {
  position: relative;
  z-index: 1;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

/* header */
header.site-header {
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.site-header .wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.term-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  background: var(--border-bright);
}

.term-dots span:nth-child(1) { background: #ff5f56; opacity: 0.7; }
.term-dots span:nth-child(2) { background: #ffbd2e; opacity: 0.7; }
.term-dots span:nth-child(3) { background: #27c93f; opacity: 0.7; }

.site-header .logo {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.site-header .logo:hover {
  text-decoration: none;
  color: var(--accent);
}

.site-header .logo .prompt {
  color: var(--accent);
}

nav.site-nav {
  display: flex;
  gap: 4px;
}

nav.site-nav a {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid transparent;
}

nav.site-nav a::before {
  content: "";
}

nav.site-nav a.active {
  color: var(--accent);
  border-color: var(--border-bright);
  background: rgba(var(--accent-rgb), 0.07);
}

nav.site-nav a:hover {
  color: var(--text);
  text-decoration: none;
  border-color: var(--border-bright);
}

main {
  padding: 72px 0 96px;
}

/* hero */
.eyebrow {
  font-size: 0.8rem;
  color: var(--accent);
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

.hero h1 {
  font-size: 2.3rem;
  margin: 0 0 10px;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--text) 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cursor {
  display: inline-block;
  width: 0.5em;
  background: var(--accent);
  -webkit-text-fill-color: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero .tagline {
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0 0 24px;
}

.hero .tagline .comment {
  color: var(--text-dim);
}

.hero p.intro {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 60ch;
}

.cta-row {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  font-family: var(--mono);
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #06110f;
  box-shadow: 0 0 0 rgba(var(--accent-rgb), 0);
}

.btn-primary:hover {
  box-shadow: 0 0 24px rgba(var(--accent-rgb), 0.45);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-bright);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--surface-hover);
}

@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
  }
  .btn:hover {
    transform: none;
  }
}

/* sections */
section {
  margin-top: 64px;
}

section h2 {
  font-size: 1rem;
  margin: 0 0 20px;
  letter-spacing: 0.02em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
}

section h2::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--border-bright);
  display: inline-block;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 20px 18px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px rgba(var(--accent-rgb), 0.12);
  transform: translateY(-2px);
}

.card .index {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 10px;
  display: block;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
  color: var(--text);
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.project-card {
  display: block;
  color: inherit;
}

.project-card:hover {
  text-decoration: none;
}

.project-card h3 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.external-arrow {
  color: var(--text-dim);
  font-size: 0.9rem;
  transition: color 0.15s ease, transform 0.15s ease;
}

.project-card:hover .external-arrow {
  color: var(--accent);
  transform: translate(2px, -2px);
}

.project-url {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* about photo */
.about-photo {
  width: 96px;
  height: 96px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 28px;
  box-shadow: 0 0 30px rgba(var(--accent-rgb), 0.15);
}

ul.plain-list {
  padding-left: 0;
  margin: 0;
  list-style: none;
}

ul.plain-list li {
  margin-bottom: 10px;
  padding-left: 22px;
  position: relative;
  color: var(--text-muted);
  font-size: 0.92rem;
}

ul.plain-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 0.8rem;
  color: var(--accent);
}

.tag::before {
  content: "<";
  color: var(--text-dim);
}

.tag::after {
  content: "/>";
  color: var(--text-dim);
}

section p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* experience — at a glance stats */
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* experience — camps & courses */
.course-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.course-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
}

.course-provider {
  margin: 0 0 14px;
  font-size: 0.9rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.course-provider::before {
  content: "▹";
  color: var(--accent);
}

.course-note {
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* footer */
footer.site-footer {
  border-top: 1px solid var(--border);
}

footer.site-footer .wrapper {
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

footer.site-footer p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.8rem;
}

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