:root {
  --bg: #0b0e12;
  --bg-elevated: #12161d;
  --bg-card: #151a22;
  --border: #232a35;
  --text: #e7ebf1;
  --text-dim: #9aa5b4;
  --text-faint: #5d6675;
  --accent: #5eead4;
  --accent-dim: #2f6f66;
  --accent-soft: rgba(94, 234, 212, 0.1);
  --radius: 10px;
  --maxw: 880px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(circle at 15% 0%, rgba(94, 234, 212, 0.07), transparent 40%),
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: auto, 48px 48px, 48px 48px;
}

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

.mono {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, Menlo, monospace;
}

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

/* Nav */
header.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11, 14, 18, 0.75);
  border-bottom: 1px solid var(--border);
}
.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
  letter-spacing: 0.02em;
}
.brand:hover {
  text-decoration: none;
  color: var(--accent);
}
.brand .dot {
  color: var(--accent);
}
nav.links {
  display: flex;
  gap: 28px;
}
nav.links a {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
}
nav.links a:hover {
  color: var(--text);
  text-decoration: none;
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 8px 10px;
  font-size: 18px;
  line-height: 1;
}

/* Hero */
.hero {
  padding: 96px 0 72px;
}
.eyebrow {
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1.1;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}
.hero p.lede {
  color: var(--text-dim);
  font-size: 18px;
  max-width: 620px;
  margin: 0 0 32px;
}
.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--border);
}
.btn:hover {
  text-decoration: none;
}
.btn.primary {
  background: var(--accent);
  color: #06201c;
  border-color: var(--accent);
}
.btn.primary:hover {
  background: #7ff0dd;
}
.btn.ghost {
  background: transparent;
  color: var(--text);
}
.btn.ghost:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
}

/* Sections */
section {
  padding: 64px 0;
  border-top: 1px solid var(--border);
}
.section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 32px;
}
.section-head .num {
  color: var(--accent);
  font-size: 14px;
}
.section-head h2 {
  font-size: 22px;
  margin: 0;
  letter-spacing: -0.01em;
}
.section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
}
.about-grid p {
  color: var(--text-dim);
  margin: 0 0 16px;
}
.fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.fact-list li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.fact-list .k {
  display: block;
  color: var(--text-faint);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.fact-list .v {
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
}

/* Projects */
.project-grid {
  display: grid;
  gap: 20px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover {
  border-color: var(--accent-dim);
}
.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 10px;
}
.card-head h3 {
  margin: 0;
  font-size: 17px;
}
.card-links {
  display: flex;
  gap: 14px;
  white-space: nowrap;
  font-size: 13px;
  font-family: "JetBrains Mono", monospace;
}
.card p.desc {
  color: var(--text-dim);
  margin: 0 0 14px;
  font-size: 14.5px;
}
.card ul.highlights {
  margin: 0 0 16px;
  padding-left: 18px;
  color: var(--text-dim);
  font-size: 14px;
}
.card ul.highlights li {
  margin-bottom: 6px;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-dim);
  border-radius: 999px;
  padding: 3px 10px;
}
.tag.live {
  color: #ffd166;
  background: rgba(255, 209, 102, 0.08);
  border-color: rgba(255, 209, 102, 0.4);
}

/* Experience timeline */
.timeline {
  display: grid;
  gap: 0;
}
.tl-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.tl-item:last-child {
  border-bottom: none;
}
.tl-when {
  color: var(--text-faint);
  font-size: 13px;
  font-family: "JetBrains Mono", monospace;
  padding-top: 2px;
}
.tl-body h3 {
  margin: 0 0 2px;
  font-size: 16px;
}
.tl-body .org {
  color: var(--accent);
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 10px;
  display: block;
}
.tl-body ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-dim);
  font-size: 14px;
}
.tl-body ul li {
  margin-bottom: 6px;
}

/* Art */
.art-intro {
  color: var(--text-dim);
  font-size: 14.5px;
  max-width: 560px;
  margin: 0 0 28px;
}
.art-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.art-item {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  cursor: zoom-in;
  padding: 0;
}
.art-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.2s ease;
}
.art-item:hover img {
  transform: scale(1.05);
}
.art-item .ribbon {
  position: absolute;
  top: 8px;
  right: 8px;
  background: #ffd166;
  color: #201400;
  font-size: 10.5px;
  font-weight: 700;
  padding: 3px 7px;
  border-radius: 999px;
  font-family: "JetBrains Mono", monospace;
}
.art-item .art-caption {
  position: absolute;
  inset: auto 0 0 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
  color: #fff;
  font-size: 12px;
  padding: 18px 10px 8px;
  text-align: left;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.art-item:hover .art-caption {
  opacity: 1;
}

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(6, 8, 11, 0.92);
  padding: 40px 20px;
  align-items: center;
  justify-content: center;
}
.lightbox.open {
  display: flex;
}
.lightbox figure {
  margin: 0;
  max-width: min(90vw, 900px);
  text-align: center;
}
.lightbox img {
  max-width: 100%;
  max-height: 78vh;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.lightbox figcaption {
  color: var(--text-dim);
  font-size: 13.5px;
  margin-top: 14px;
}
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 22px;
  line-height: 1;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  cursor: pointer;
}
.lightbox-close:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
}

@media (max-width: 720px) {
  .art-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Skills */
.skill-groups {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.skill-group h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin: 0 0 12px;
}
.skill-group .tags {
  gap: 8px 8px;
}

/* Education */
.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
}
.edu-card h3 {
  margin: 0 0 4px;
  font-size: 17px;
}
.edu-card .school {
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}
.edu-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 16px;
  font-size: 13.5px;
  color: var(--text-dim);
}
.edu-meta strong {
  color: var(--text);
}

/* Contact / footer */
footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 40px;
}
.contact-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
footer h2 {
  font-size: 24px;
  margin: 0 0 8px;
}
footer p {
  color: var(--text-dim);
  margin: 0;
  max-width: 460px;
}
.contact-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.fine-print {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 720px) {
  nav.links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    display: none;
  }
  nav.links.open {
    display: flex;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .skill-groups {
    grid-template-columns: 1fr;
  }
  .tl-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}