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

/* Nord palette */
:root {
  --n0:  #2E3440;
  --n1:  #3B4252;
  --n2:  #434C5E;
  --n3:  #4C566A;
  --n4:  #D8DEE9;
  --n5:  #E5E9F0;
  --n6:  #ECEFF4;
  --n7:  #8FBCBB;
  --n8:  #88C0D0;
  --n9:  #81A1C1;
  --n10: #5E81AC;
  --n11: #BF616A;
  --n12: #D08770;
  --n13: #EBCB8B;
  --n14: #A3BE8C;
  --n15: #B48EAD;

  --font: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--n0);
  color: var(--n4);
  font-family: var(--font);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--n8); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--n6); }
button { background: none; border: 0; color: inherit; cursor: pointer; font: inherit; }

/* ── Site shell ─────────────────────────────────────────── */
.site {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header / Hero ──────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--n2);
  background: linear-gradient(175deg, var(--n1) 0%, var(--n0) 100%);
}

.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 4rem 2rem 3rem;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}

.hero-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--n3);
}

.hero-label::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--n14);
  margin-right: 0.5rem;
  transform: translateY(-1px);
  box-shadow: 0 0 0 3px rgba(163, 190, 140, 0.18);
}

.social-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.gh-link {
  color: var(--n9);
  display: flex;
  align-items: center;
  transition: color 0.15s ease;
}
.gh-link:hover { color: var(--n6); }

.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--n6);
  line-height: 1.05;
  margin-bottom: 0.8rem;
  max-width: 720px;
}
.hero h1 .accent { color: var(--n8); }

.hero-sub {
  font-size: 1rem;
  color: var(--n4);
  max-width: 560px;
  margin-bottom: 2rem;
  line-height: 1.55;
}

/* ── Search ─────────────────────────────────────────────── */
.search-row {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
  margin-bottom: 1.5rem;
  max-width: 560px;
}
.search-wrap { position: relative; flex: 1; }
.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--n3);
  pointer-events: none;
  display: flex;
  align-items: center;
}
#search {
  width: 100%;
  background: var(--n0);
  border: 1px solid var(--n3);
  border-radius: 8px;
  padding: 0.65rem 4.5rem 0.65rem 2.4rem;
  font-size: 0.9rem;
  font-family: var(--font);
  color: var(--n5);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
}
#search::placeholder { color: var(--n3); }
#search:focus {
  border-color: var(--n9);
  box-shadow: 0 0 0 3px rgba(94, 129, 172, 0.20);
}
#search::-webkit-search-cancel-button { display: none; }

.search-kbd {
  position: absolute;
  right: 0.55rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--n3);
  border: 1px solid var(--n3);
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  pointer-events: none;
  background: var(--n0);
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.search-kbd.active { color: var(--n5); border-color: var(--n9); }

/* ── Filter chips ───────────────────────────────────────── */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}
.chip {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--n3);
  background: transparent;
  border: 1px solid var(--n2);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.chip:hover { color: var(--n5); border-color: var(--n3); }
.chip .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.chip.active {
  color: var(--n6);
  background: var(--n1);
  border-color: var(--n3);
}
.chip .ct { color: var(--n3); margin-left: 0.15rem; }
.chip.active .ct { color: var(--n4); }

/* ── Main compass layout ────────────────────────────────── */
.site-main {
  flex: 1;
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 3rem;
  align-items: start;
}

/* ── Compass rail ───────────────────────────────────────── */
.compass-rail {
  position: sticky;
  top: 2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.compass-rail .rail-eyebrow {
  color: var(--n3);
  margin-bottom: 0.9rem;
  display: block;
}
.compass-rail ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  border-left: 1px solid var(--n2);
}
.compass-rail a {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.25rem 0 0.25rem 0.85rem;
  color: var(--n3);
  margin-left: -1px;
  border-left: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.compass-rail a:hover { color: var(--n5); }
.compass-rail a.active {
  color: var(--n6);
  border-left-color: var(--n8);
}
.compass-rail .rail-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.compass-rail .rail-num { color: var(--n3); margin-left: auto; }

/* ── Compass content ────────────────────────────────────── */
.compass-content { min-width: 0; }
.compass-section + .compass-section { margin-top: 3.5rem; }

.compass-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

/* ── Group section header ───────────────────────────────── */
.group-head {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--n2);
}
.group-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  transform: translateY(-1px);
}
.group-head h2 {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--n5);
}
.group-count {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--n3);
  margin-left: 0.25rem;
}
.group-num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--n3);
  margin-left: auto;
  letter-spacing: 0.08em;
}

/* ── Card ───────────────────────────────────────────────── */
.card {
  position: relative;
  background: var(--n1);
  border: 1px solid var(--n2);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.18s, transform 0.18s, box-shadow 0.18s;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--n3);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.30);
}
.card-link {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.card-thumb {
  aspect-ratio: 16 / 9;
  background: var(--n0);
  border-bottom: 1px solid var(--n2);
  position: relative;
  overflow: hidden;
}
.card-thumb-overlay {
  position: absolute;
  left: 0.6rem;
  top: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--n4);
  background: rgba(46, 52, 64, 0.85);
  border: 1px solid var(--n2);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  backdrop-filter: blur(2px);
}
.card-thumb-overlay .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.card-body {
  flex: 1;
  padding: 1rem 1.1rem 0.55rem;
  position: relative;
  z-index: 1;
}
.card h3 {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--n6);
  margin-bottom: 0.35rem;
  line-height: 1.3;
}
.card p {
  font-size: 0.82rem;
  color: var(--n4);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding: 0.25rem 1.1rem 0.9rem;
  position: relative;
  z-index: 1;
}
.tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: var(--n4);
  border: 1px solid var(--n3);
  border-radius: 4px;
  padding: 0.1rem 0.45rem;
}

.card-footer {
  padding: 0.65rem 1.1rem 0.85rem;
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--n2);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--n8);
  transition: color 0.15s;
}
.card:hover .card-footer { color: var(--n6); }

/* ── Search highlight ───────────────────────────────────── */
mark {
  background: none;
  color: var(--n13);
  font-weight: 600;
}

/* ── Empty state ────────────────────────────────────────── */
.empty {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--n3);
  border: 1px dashed var(--n2);
  border-radius: 10px;
  grid-column: 1 / -1;
}
.empty .q {
  color: var(--n5);
  font-family: var(--mono);
}

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 1.5rem;
  border-top: 1px solid var(--n2);
  font-size: 0.76rem;
  color: var(--n3);
}
.site-footer a { color: var(--n3); }
.site-footer a:hover { color: var(--n8); }
.site-footer .sep { margin: 0 0.55rem; color: var(--n2); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 800px) {
  .site-main {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .compass-rail { display: none; }
}

@media (max-width: 600px) {
  .hero { padding: 2.5rem 1.25rem 2.5rem; }
  .site-main { padding: 2rem 1.25rem 3rem; }
  .compass-grid { grid-template-columns: 1fr; }
}