/* Zero-Termux — design system (dark) */
:root {
  --bg: #0b0e14;
  --bg-soft: #0e1220;
  --surface: #12161f;
  --surface-2: #171d2b;
  --surface-3: #1e2637;
  --border: #232b3d;
  --border-strong: #2f3a52;
  --text: #d8dfef;
  --text-dim: #9aa5bd;
  --text-faint: #6b7690;
  --accent: #7aa2f7;
  --accent-2: #bb9af7;
  --accent-3: #2ac3de;
  --success: #9ece6a;
  --warn: #e0af68;
  --danger: #f7768e;
  --radius: 10px;
  --radius-sm: 6px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", "Fira Code", ui-monospace, "Cascadia Code", Menlo, monospace;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --maxw: 1140px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* subtle grid backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(122, 162, 247, 0.07), transparent 60%),
    radial-gradient(1000px 500px at 90% 10%, rgba(187, 154, 247, 0.06), transparent 55%);
}

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

code, pre, .mono { font-family: var(--mono); }
code { background: var(--surface-2); border: 1px solid var(--border); border-radius: 4px; padding: 0.1em 0.35em; font-size: 0.88em; color: #c3d3f9; }
pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.5;
  position: relative;
}
pre code { background: none; border: 0; padding: 0; color: inherit; }

/* ===== top nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.brand {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}
.brand .diamond { color: var(--accent-2); font-size: 1.15rem; }
.nav-links {
  display: flex;
  gap: 0.15rem;
  flex-wrap: wrap;
  margin-left: auto;
}
.nav-links a {
  color: var(--text-dim);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.nav-links a.active { color: var(--accent); background: var(--surface-2); }

.nav-toggle {
  display: none;
  margin-left: auto;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.7rem;
  font-size: 1rem;
  cursor: pointer;
}

/* ===== layout ===== */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }

.hero {
  text-align: center;
  padding: 4.5rem 1.25rem 3rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(122, 162, 247, 0.08), transparent 70%);
}
.hero .diamond { color: var(--accent-2); font-size: 2rem; }
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin: 0.6rem 0 0.4rem;
  letter-spacing: -0.02em;
}
.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .sub { color: var(--text-dim); font-size: 1.15rem; max-width: 42rem; margin: 0 auto 1.8rem; }
.hero .install-cmd {
  max-width: 46rem;
  margin: 0 auto;
  text-align: left;
  font-size: 0.95rem;
}
.hero .install-cmd pre { padding-right: 6.5rem; }
.hero .badges { margin-top: 1.6rem; display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; }

.badge {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  font-family: var(--mono);
}

/* ===== sections ===== */
section { padding: 3rem 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: 0; }
.section-head { max-width: 44rem; }
.section-head .tag {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-3);
}
.section-head h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0.35rem 0 0.6rem; letter-spacing: -0.01em; }
.section-head p { color: var(--text-dim); margin: 0; }

/* ===== cards ===== */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.card h3 { margin: 0 0 0.35rem; font-size: 1.05rem; }
.card h3 .mono { color: var(--accent); }
.card p { margin: 0; color: var(--text-dim); font-size: 0.92rem; }
.card .count {
  display: inline-block;
  margin-top: 0.7rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent-2);
  background: rgba(187, 154, 247, 0.1);
  border: 1px solid rgba(187, 154, 247, 0.25);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
}
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  padding: 1.2rem 0.8rem;
}
.stat .num { font-size: 2rem; font-weight: 800; font-family: var(--mono); color: var(--accent); }
.stat .lbl { color: var(--text-dim); font-size: 0.85rem; margin-top: 0.2rem; }

/* ===== tables ===== */
.table-scroll { overflow-x: auto; margin-top: 1.2rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--text-dim); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; }
tbody tr:hover { background: var(--surface-2); }

/* ===== code blocks + copy ===== */
.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 2;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  background: var(--surface-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.7rem;
  cursor: pointer;
}
.copy-btn:hover { color: var(--text); border-color: var(--accent); }
.copy-btn.copied { color: var(--success); border-color: var(--success); }

/* ===== accordions (details) ===== */
details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 0.8rem;
}
details summary {
  cursor: pointer;
  padding: 0.85rem 1.1rem;
  font-weight: 600;
  font-family: var(--mono);
  font-size: 0.92rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
details summary::-webkit-details-marker { display: none; }
details summary::before { content: "▸"; color: var(--accent-2); transition: transform 0.15s; }
details[open] summary::before { transform: rotate(90deg); }
details .body { padding: 0.2rem 1.1rem 1.1rem; color: var(--text-dim); }

/* ===== search ===== */
.searchbar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.55rem 0.9rem;
  margin: 1.4rem 0 0.2rem;
  max-width: 34rem;
}
.searchbar input {
  flex: 1;
  background: none;
  border: 0;
  outline: 0;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.92rem;
}
.searchbar .icon { color: var(--text-faint); }
.search-meta { color: var(--text-faint); font-size: 0.8rem; font-family: var(--mono); margin: 0.3rem 0 0; }

/* ===== explorer ===== */
.tool-card h3 .chip { font-size: 0.72rem; color: var(--accent-2); }
.tool-card .cmd-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.6rem;
}
.tool-card .cmd {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--success);
  background: rgba(158, 206, 106, 0.1);
  border-radius: 4px;
  padding: 0.12rem 0.5rem;
  word-break: break-all;
}
.tool-card .copy-btn.inline {
  padding: 0.2rem 0.6rem;
  font-size: 0.72rem;
}
.mod-group h2 .copy-btn.inline { margin-left: auto; }
.pkg-table .ver { color: var(--text-faint); font-family: var(--mono); font-size: 0.85rem; white-space: nowrap; }
.pkg-table .cat { color: var(--accent-3); font-size: 0.8rem; font-family: var(--mono); white-space: nowrap; }

/* ===== callouts ===== */
.note, .warn, .danger {
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  margin: 1.1rem 0;
  font-size: 0.95rem;
  border: 1px solid;
}
.note { background: rgba(122, 162, 247, 0.07); border-color: rgba(122, 162, 247, 0.3); }
.warn { background: rgba(224, 175, 104, 0.07); border-color: rgba(224, 175, 104, 0.35); }
.danger { background: rgba(247, 118, 142, 0.07); border-color: rgba(247, 118, 142, 0.35); }
.note strong, .warn strong, .danger strong { text-transform: uppercase; font-size: 0.78rem; letter-spacing: 0.1em; display: block; margin-bottom: 0.3rem; }

/* ===== breadcrumb / page head ===== */
.page-head { padding: 2.5rem 0 1.5rem; border-bottom: 1px solid var(--border); }
.page-head h1 { margin: 0.3rem 0 0.4rem; font-size: clamp(1.7rem, 4vw, 2.4rem); letter-spacing: -0.02em; }
.page-head .crumb { color: var(--text-faint); font-family: var(--mono); font-size: 0.82rem; }
.page-head p { color: var(--text-dim); margin: 0; max-width: 46rem; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.prose { max-width: 52rem; }
.prose h2 { margin-top: 2.2rem; font-size: 1.35rem; }
.prose h3 { margin-top: 1.6rem; }
.prose li { margin: 0.3rem 0; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 1rem 0; }
.steps li {
  counter-increment: step;
  position: relative;
  padding: 0.25rem 0 0.9rem 2.6rem;
  color: var(--text-dim);
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--surface-3);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.anchor-cards a { color: var(--text); }
.anchor-cards .card:hover { border-color: var(--accent); }

/* ===== footer ===== */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 2rem 1.25rem 3rem;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.88rem;
}
footer .mono { font-family: var(--mono); color: var(--text-dim); margin-bottom: 0.4rem; }

/* ===== explorer ===== */
.explorer-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.9rem;
  align-items: end;
  margin-top: 1.6rem;
}
.explorer-tools .searchbar { margin: 0; max-width: none; }
.catbar select {
  flex: 1;
  background: none;
  border: 0;
  outline: 0;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.92rem;
  cursor: pointer;
}
.catbar select option { background: var(--surface-3); color: var(--text); }
.searchbar .clear-search {
  background: none;
  border: 0;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0 0.2rem;
  line-height: 1;
}
.searchbar .clear-search:hover { color: var(--text); }
.search-meta { min-height: 1.2rem; grid-column: 1 / -1; }
.explorer-wrap { margin-top: 0.4rem; }
.explorer-init { margin-top: 1.2rem; }
.explorer-init[hidden] { display: none; }

.empty-state {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 2rem 1.4rem;
  text-align: center;
  color: var(--text-dim);
  margin: 1.2rem 0;
}
.empty-state h3 { color: var(--text); margin: 0 0 0.4rem; }
.empty-state a { color: var(--accent); }
.empty-state.sm { padding: 1.2rem; margin: 0; }

.mod-group { scroll-margin-top: 5rem; margin-top: 2.2rem; }
.mod-group h2 { display: flex; align-items: center; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 0.3rem; }
.mod-group h2 .count {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent-2);
  background: rgba(187, 154, 247, 0.1);
  border: 1px solid rgba(187, 154, 247, 0.25);
  border-radius: 999px;
  padding: 0.1rem 0.6rem;
}

/* copy button context anchors */
pre { position: relative; }
.copy-btn.inline { position: static; display: inline-block; margin-left: 0.4rem; }
.copy-btn.failed { color: var(--danger); border-color: var(--danger); }
.install-cmd { position: relative; }
.install-cmd pre { padding-right: 6.5rem; }

/* ===== site search results ===== */
.search-group { margin-top: 1.6rem; }
.search-group h2 {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
  margin: 0 0 0.6rem;
}
.search-hit {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 0 0.9rem;
  align-items: baseline;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text);
}
.search-hit:hover { background: var(--surface-2); text-decoration: none; }
.search-hit .k {
  grid-row: span 2;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.search-hit code { font-size: 0.8rem; color: var(--success); margin-left: 0.5rem; }
.search-hit p { grid-column: 2; margin: 0; color: var(--text-dim); font-size: 0.88rem; }

/* ===== command pattern table ===== */
.cmd-table { margin-top: 1.2rem; }
.cmd-table code { white-space: nowrap; font-size: 0.82rem; }
.cmd-table td:first-child { color: var(--text-dim); }

/* ===== architecture diagram ===== */
.arch { margin: 1.6rem 0; display: flex; flex-direction: column; align-items: center; gap: 0; }
.arch-node {
  width: min(100%, 44rem);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 0.9rem 1.1rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.6;
}
.arch-node strong { color: var(--text); }
.arch-node code { color: var(--success); font-size: 0.82rem; }
.arch-top { border-color: var(--accent); }
.arch-top code { color: var(--accent); }
.arch-end { border-color: var(--accent-3); }
.arch-arrow {
  color: var(--text-faint);
  font-size: 0.85rem;
  padding: 0.35rem 0;
  line-height: 1;
  text-align: center;
  font-family: var(--mono);
}
.arch-arrow code { color: var(--accent-2); font-size: 0.78rem; }
.arch-row { display: flex; gap: 0.75rem; align-items: stretch; width: min(100%, 44rem); }
.arch-row .arch-node { flex: 1; }
.arch-arrow.horiz {
  display: flex;
  align-items: center;
  padding: 0 0.1rem;
  font-size: 0.8rem;
}
@media (max-width: 640px) {
  .arch-row { flex-direction: column; }
  .arch-arrow.horiz { transform: rotate(90deg); padding: 0.2rem 0; }
}

/* ===== responsive ===== */
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1rem 1rem;
    margin: 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.6rem 0.7rem; }
  .two-col { grid-template-columns: 1fr; }
  .hero { padding-top: 3rem; }
  .explorer-tools { grid-template-columns: 1fr; }
  .catbar select { width: 100%; }
  .search-hit { grid-template-columns: 1fr; }
  .search-hit .k { grid-column: 1; }
}

/* ===== accessibility ===== */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.copy-btn:focus-visible,
.nav-toggle:focus-visible,
summary:focus-visible { outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}