/* ============================================================
   react-native-opencv-wrapper docs
   ============================================================ */

:root {
  --sidebar-w: 280px;
  --topbar-h: 60px;
  --radius: 10px;
  --radius-sm: 7px;
  --maxw: 920px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

:root[data-theme="dark"] {
  --bg: #0d1117;
  --bg-elev: #131a23;
  --bg-elev-2: #1a232e;
  --bg-code: #0a0e14;
  --border: #243040;
  --border-soft: #1b2430;
  --text: #e6edf3;
  --text-dim: #9aa7b4;
  --text-faint: #6b7886;
  --accent: #4ea1ff;
  --accent-soft: rgba(78, 161, 255, 0.14);
  --accent-2: #7ee787;
  --badge-img-bg: rgba(78, 161, 255, 0.16);
  --badge-img-fg: #7cc0ff;
  --badge-data-bg: rgba(126, 231, 135, 0.16);
  --badge-data-fg: #7ee787;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.4);
}

:root[data-theme="light"] {
  --bg: #f6f8fa;
  --bg-elev: #ffffff;
  --bg-elev-2: #f0f3f6;
  --bg-code: #1b212b;
  --border: #d6dde5;
  --border-soft: #e7ebef;
  --text: #1b2430;
  --text-dim: #56636f;
  --text-faint: #8a96a2;
  --accent: #0a66d6;
  --accent-soft: rgba(10, 102, 214, 0.1);
  --accent-2: #1a7f37;
  --badge-img-bg: rgba(10, 102, 214, 0.12);
  --badge-img-fg: #0a66d6;
  --badge-data-bg: rgba(26, 127, 55, 0.12);
  --badge-data-fg: #1a7f37;
  --shadow: 0 8px 28px rgba(20, 40, 70, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--topbar-h) + 12px);
}

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

code {
  font-family: var(--mono);
  font-size: 0.86em;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 8px 14px;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 200;
}
.skip-link:focus {
  left: 0;
}

/* ---------------- Topbar ---------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 18px;
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  flex-shrink: 0;
}
.brand:hover {
  text-decoration: none;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #fff;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.5px;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-text strong {
  font-size: 0.95rem;
}
.brand-text em {
  font-style: normal;
  font-size: 0.72rem;
  color: var(--text-faint);
}

.search-wrap {
  position: relative;
  flex: 1;
  max-width: 460px;
  margin: 0 auto;
}
.search {
  width: 100%;
  height: 40px;
  padding: 0 40px 0 38px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.9rem;
  outline: none;
  transition:
    border-color 0.15s,
    box-shadow 0.15s;
}
.search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.search-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  width: 17px;
  height: 17px;
  color: var(--text-faint);
  pointer-events: none;
}
.search-kbd {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  background: var(--bg-elev-2);
  pointer-events: none;
}

.topbar-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
.icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 9px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition:
    background 0.15s,
    color 0.15s;
}
.icon-btn:hover {
  background: var(--bg-elev-2);
  color: var(--text);
  text-decoration: none;
}
.nav-toggle {
  display: none;
}
.icon-moon {
  display: none;
}
:root[data-theme="light"] .icon-sun {
  display: none;
}
:root[data-theme="light"] .icon-moon {
  display: block;
}

/* ---------------- Layout ---------------- */
.layout {
  display: flex;
  align-items: flex-start;
}

.sidebar {
  position: sticky;
  top: var(--topbar-h);
  flex-shrink: 0;
  width: var(--sidebar-w);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg-elev);
  overscroll-behavior: contain;
}
.sidebar-inner {
  padding: 18px 12px 60px;
}
.sidebar-scrim {
  display: none;
}

.nav-group {
  margin-bottom: 4px;
}
.nav-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 10px;
  margin-top: 8px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--text-faint);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--sans);
  border-radius: var(--radius-sm);
}
.nav-title:hover {
  color: var(--text-dim);
  background: var(--bg-elev-2);
}
.nav-title .chevron {
  transition: transform 0.18s;
  width: 14px;
  height: 14px;
}
.nav-group.collapsed .chevron {
  transform: rotate(-90deg);
}
.nav-group.collapsed .nav-list {
  display: none;
}
.nav-list {
  list-style: none;
  margin: 2px 0 0;
  padding: 0;
}
.nav-list a {
  display: block;
  padding: 6px 10px 6px 18px;
  font-size: 0.85rem;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
}
.nav-list a:hover {
  background: var(--bg-elev-2);
  color: var(--text);
  text-decoration: none;
}
.nav-list a.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
  font-weight: 500;
}
.nav-guide a {
  padding-left: 10px;
}

/* ---------------- Main ---------------- */
.main {
  flex: 1;
  min-width: 0;
  padding: 36px clamp(18px, 5vw, 56px) 80px;
}
.main > section,
.main > div,
.main > footer {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}
h2 {
  font-size: 1.5rem;
  margin: 8px 0 16px;
  letter-spacing: -0.01em;
}
h3 {
  font-size: 1.08rem;
  margin: 26px 0 10px;
}
h4 {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-dim);
  max-width: 70ch;
}

.guide-section {
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid var(--border-soft);
}
.hero {
  padding-top: 8px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0;
}
.stat {
  flex: 1 1 130px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat .num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.stat .label {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: 6px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font-weight: 500;
  font-size: 0.92rem;
  cursor: pointer;
}
.btn:hover {
  text-decoration: none;
  border-color: var(--accent);
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  filter: brightness(1.08);
}

/* ---------------- Code blocks ---------------- */
pre.code {
  position: relative;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  overflow-x: auto;
  margin: 14px 0;
}
pre.code code {
  font-family: var(--mono);
  font-size: 0.84rem;
  color: #cdd9e5;
  line-height: 1.6;
  white-space: pre;
}

/* TypeScript syntax theme (code blocks render on a dark background in both
   site themes, so a single VS Code Dark+ inspired palette is used). */
.hl .tok-com {
  color: #6a9955;
  font-style: italic;
}
.hl .tok-str {
  color: #ce9178;
}
.hl .tok-num {
  color: #b5cea8;
}
.hl .tok-kw {
  color: #569cd6;
}
.hl .tok-flow {
  color: #c586c0;
}
.hl .tok-bool {
  color: #569cd6;
}
.hl .tok-fn {
  color: #dcdcaa;
}
.hl .tok-type {
  color: #4ec9b0;
}
.hl .tok-punc {
  color: #c0c7d0;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.7rem;
  font-family: var(--sans);
  color: var(--text-dim);
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 9px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}
pre.code:hover .copy-btn {
  opacity: 1;
}
.copy-btn.copied {
  color: var(--accent-2);
  border-color: var(--accent-2);
  opacity: 1;
}

p code,
li code,
td code {
  background: var(--bg-elev-2);
  border: 1px solid var(--border-soft);
  border-radius: 5px;
  padding: 1px 5px;
  color: var(--text);
}

.muted {
  color: var(--text-dim);
}

/* ---------------- I/O grid ---------------- */
.io-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 16px 0;
}
.io-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.io-card ul {
  margin: 0;
  padding-left: 18px;
}
.io-card li {
  margin: 6px 0;
  font-size: 0.9rem;
}

/* ---------------- Tables ---------------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 14px 0;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.88rem;
}
th,
td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
}
th {
  background: var(--bg-elev-2);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-dim);
}
tr:last-child td {
  border-bottom: none;
}
.errors-table td:first-child code {
  white-space: nowrap;
}

/* ---------------- Op cards ---------------- */
.cat-block {
  padding-top: 36px;
  margin-top: 10px;
}
.cat-head h2 {
  margin-bottom: 4px;
}
.cat-head .cat-desc {
  color: var(--text-dim);
  margin: 0 0 4px;
}

.op-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 16px 0;
  scroll-margin-top: calc(var(--topbar-h) + 16px);
}
.op-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.op-head h3 {
  margin: 0;
  font-size: 1.18rem;
}
.op-anchor {
  color: var(--text-faint);
  opacity: 0;
  font-weight: 400;
  margin-left: -2px;
}
.op-card:hover .op-anchor {
  opacity: 1;
}
.op-id {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}

.badge {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 999px;
}
.badge-image {
  background: var(--badge-img-bg);
  color: var(--badge-img-fg);
}
.badge-data {
  background: var(--badge-data-bg);
  color: var(--badge-data-fg);
}

.op-desc {
  color: var(--text-dim);
  margin: 8px 0 14px;
}

.sig {
  display: block;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: #9ecbff;
  overflow-x: auto;
  white-space: pre;
  margin: 0 0 14px;
}

.op-section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 16px 0 8px;
}

.params-table code {
  white-space: nowrap;
}
.params-table .pname {
  font-weight: 600;
  color: var(--text);
}
.params-table .ptype code {
  color: var(--badge-img-fg);
  background: var(--badge-img-bg);
  border: none;
}
.req-dot {
  color: #ff7b72;
  font-weight: 700;
}
.opt-tag {
  color: var(--text-faint);
  font-size: 0.78rem;
}
.def-val code {
  color: var(--accent-2);
}

.returns-block {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  overflow-x: auto;
}
.returns-block code {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: #cdd9e5;
  white-space: pre;
}
.returns-img {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--text);
}
.note svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--accent);
}

.standalone-line {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.standalone-line code {
  font-size: 0.8rem;
}

.no-results {
  text-align: center;
  color: var(--text-dim);
  padding: 50px 0;
  font-size: 1rem;
}

.footer {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--border-soft);
  color: var(--text-faint);
  font-size: 0.85rem;
  text-align: center;
}

/* hide helper */
[hidden] {
  display: none !important;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 920px) {
  .nav-toggle {
    display: grid;
  }
  .search-kbd {
    display: none;
  }
  .sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    z-index: 90;
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    box-shadow: var(--shadow);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-scrim.show {
    display: block;
    position: fixed;
    inset: var(--topbar-h) 0 0 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 80;
  }
  .brand-text {
    display: none;
  }
  .io-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .search-wrap {
    max-width: none;
  }
  .main {
    padding: 24px 16px 60px;
  }
  .op-card {
    padding: 16px;
  }
}