/* Abhiron Documentation Portal — v6.8.9 */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");
:root {
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --bg-code: #f4f5f7;
  --border: #e5e7eb;
  --text: #303030;
  --text-soft: #585858;
  --text-mute: #7e7e7e;
  --primary: #16a34a;
  --primary-soft: #eef2ff;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.04);
  --sidebar-w: 280px;
  --toc-w: 220px;
  --header-h: 60px;
  --font:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    sans-serif;
  --mono:
    "SF Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

[data-theme="dark"] {
  --bg: #0b1220;
  --bg-soft: #303030;
  --bg-code: #111827;
  --border: #1f2937;
  --text: #e5e7eb;
  --text-soft: #cbd5e1;
  --text-mute: #94a3b8;
  --primary: #818cf8;
  --primary-soft: #1e1b4b;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-weight: 400;
}

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--primary);
  color: #fff;
  padding: 8px 12px;
  border-radius: 4px;
}
.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 1000;
}

/* ---------- Topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: saturate(180%) blur(10px);
}
.menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
  font-size: 18px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.brand .logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  font-weight: 700;
  display: grid;
  place-items: center;
  font-size: 16px;
}
.brand-name {
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
}
.brand-ver {
  font-size: 11px;
  color: var(--text-mute);
  margin-top: 3px;
}
.search {
  flex: 1;
  max-width: 520px;
  margin: 0 auto;
}
.search input {
  width: 100%;
  height: 38px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
}
.search input:focus {
  outline: 2px solid var(--primary);
  outline-offset: -1px;
}
.topbar-actions {
  display: flex;
  gap: 8px;
}
.ghost {
  background: transparent;
  border: 1px solid var(--border);
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
}
.ghost:hover {
  background: var(--bg-soft);
}

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  gap: 0;
  max-width: 1440px;
  margin: 0 auto;
}
.sidebar,
.toc {
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 24px 16px;
  border-right: 1px solid var(--border);
}
.toc {
  border-right: none;
  border-left: 1px solid var(--border);
}
.content {
  padding: 32px 40px 80px;
  min-width: 0;
}

/* ---------- Sidebar Nav ---------- */
.nav-group {
  margin-bottom: 18px;
}
.nav-group h4 {
  margin: 0 8px 6px;
  padding: 4px 8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-mute);
}
.nav-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-group li a {
  display: block;
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text-soft);
  font-size: 14px;
  text-decoration: none;
  border-left: 2px solid transparent;
}
.nav-group li a:hover {
  background: var(--bg-soft);
  color: var(--text);
}
.nav-group li a.active {
  background: var(--primary-soft);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 500;
}

/* ---------- Content Typography ---------- */
.content h1 {
  font-size: 32px;
  margin: 0 0 8px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.content h2 {
  font-size: 24px;
  margin: 48px 0 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  letter-spacing: -0.01em;
}
.content section:first-of-type h2 {
  border-top: none;
  padding-top: 0;
  margin-top: 32px;
}
.content h3 {
  font-size: 18px;
  margin: 28px 0 10px;
}
.content h4 {
  font-size: 15px;
  margin: 20px 0 8px;
  color: var(--text-soft);
}
.content p {
  margin: 0 0 14px;
  color: var(--text-soft);
}
.content ul,
.content ol {
  padding-left: 22px;
  color: var(--text-soft);
}
.content li {
  margin-bottom: 6px;
}
.content strong {
  color: var(--text);
}

.lead {
  font-size: 17px;
  color: var(--text-soft);
  margin-bottom: 24px;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  background: var(--primary-soft);
  color: var(--primary);
  margin-right: 6px;
}
.badge.success {
  background: rgba(22, 163, 74, 0.12);
  color: var(--success);
}
.badge.warning {
  background: rgba(217, 119, 6, 0.12);
  color: var(--warning);
}
.badge.danger {
  background: rgba(220, 38, 38, 0.12);
  color: var(--danger);
}

/* Cards / grid */
.grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  margin: 16px 0 24px;
}
.card {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.card h4 {
  margin: 0 0 4px;
  color: var(--text);
}
.card p {
  margin: 0;
  font-size: 13px;
  color: var(--text-mute);
}

/* Callouts */
.callout {
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  background: var(--bg-soft);
  padding: 12px 16px;
  margin: 16px 0;
  border-radius: var(--radius);
}
.callout.info {
  border-left-color: var(--primary);
}
.callout.success {
  border-left-color: var(--success);
}
.callout.warning {
  border-left-color: var(--warning);
}
.callout.danger {
  border-left-color: var(--danger);
}
.callout p:last-child {
  margin-bottom: 0;
}
.callout .title {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

/* Code */
code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--bg-code);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text);
}
pre {
  margin: 12px 0 20px;
  padding: 0;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
pre code {
  display: block;
  padding: 14px 16px;
  background: transparent;
  border-radius: 0;
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
}

/* Tables */
.tbl {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 20px;
  font-size: 14px;
}
.tbl th,
.tbl td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.tbl th {
  background: var(--bg-soft);
  font-weight: 600;
  color: var(--text);
  font-size: 13px;
}
.tbl code {
  font-size: 12px;
}

/* Imported markdown content tables & blocks */
.content section table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 20px;
  font-size: 14px;
  display: block;
  overflow-x: auto;
}
.content section th,
.content section td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.content section th {
  background: var(--bg-soft);
  font-weight: 600;
  font-size: 13px;
}
.content section blockquote {
  margin: 12px 0 20px;
  padding: 10px 16px;
  border-left: 3px solid var(--border);
  background: var(--bg-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-mute);
}
.content section blockquote p:last-child {
  margin-bottom: 0;
}
.content section img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}
.content section hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 28px 0;
}
.content section input[type="checkbox"] {
  margin-right: 6px;
}

/* TOC */
.toc h5 {
  margin: 0 0 10px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-mute);
  font-weight: 600;
}
.toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.toc li {
  margin: 0;
}
.toc a {
  display: block;
  padding: 4px 10px;
  font-size: 13px;
  color: var(--text-mute);
  border-left: 2px solid transparent;
}
.toc a:hover {
  color: var(--text);
  text-decoration: none;
}
.toc a.active {
  color: var(--primary);
  border-left-color: var(--primary);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
  padding-top: 24px;
  color: var(--text-mute);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer a {
  color: var(--primary);
  font-weight: 500;
}

/* Search results */
.search-empty {
  padding: 40px;
  text-align: center;
  color: var(--text-mute);
}
.hidden {
  display: none !important;
}
mark {
  background: #fef08a;
  color: #422006;
  padding: 0 2px;
  border-radius: 2px;
}
[data-theme="dark"] mark {
  background: #7c2d12;
  color: #fef3c7;
}

/* Backdrop for mobile */
.backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 40;
}
.backdrop.show {
  display: block;
}

/* Responsive */
@media (max-width: 1100px) {
  .layout {
    grid-template-columns: var(--sidebar-w) 1fr;
  }
  .toc {
    display: none;
  }
}
@media (max-width: 780px) {
  :root {
    --sidebar-w: 260px;
  }
  .menu-btn {
    display: block;
  }
  .layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: var(--sidebar-w);
    height: calc(100vh - var(--header-h));
    background: var(--bg);
    z-index: 45;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .content {
    padding: 24px 20px 60px;
  }
  .content h1 {
    font-size: 26px;
  }
  .content h2 {
    font-size: 20px;
  }
  .search {
    max-width: none;
  }
  .brand-ver {
    display: none;
  }
}

/* Download / call-to-action button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.95rem;
  border-radius: 0.5rem;
  background: #075e54;
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: 1px solid #b8171b;
  transition: filter 0.15s ease;
}
.btn:hover {
  filter: brightness(1.08);
  text-decoration: none;
}

/* ---------- Topic pagination ---------- */
.content section.pg-hidden {
  display: none;
}

.pager {
  margin: 32px 0 28px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}
.pager.hidden {
  display: none;
}
.pager-progress {
  height: 4px;
  width: 100%;
  background: var(--bg-soft);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 14px;
}
.pager-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary), #7c3aed);
  transition: width 0.3s ease;
}
.pager-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-mute);
  margin-bottom: 14px;
}
.pager-hint kbd {
  font-family: var(--mono);
  font-size: 11px;
  padding: 1px 5px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--bg-soft);
  color: var(--text-soft);
}
.pager-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.pager-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  background: var(--bg);
  color: var(--text);
  transition:
    border-color 0.15s ease,
    background 0.15s ease,
    transform 0.15s ease;
  min-width: 0;
}
.pager-link:hover {
  border-color: var(--primary);
  background: var(--bg-soft);
  transform: translateY(-1px);
}
.pager-link.next {
  text-align: right;
  align-items: flex-end;
}
.pager-link.disabled {
  opacity: 0.45;
  pointer-events: none;
}
.pager-dir {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-mute);
}
.pager-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}
.pager-top {
  margin: 16px auto 0;
  display: block;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-soft);
  font-size: 12px;
  padding: 7px 14px;
  cursor: pointer;
}
.pager-top:hover {
  border-color: var(--primary);
  color: var(--primary);
}

@media (max-width: 620px) {
  .pager-links {
    grid-template-columns: 1fr;
  }
  .pager-link.next {
    text-align: left;
    align-items: flex-start;
  }
}

/* ---------- Topic filter (sidebar) ---------- */
.nav-filter {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
  padding: 10px;
  margin: 0 0 18px;
}
.nav-filter.active {
  border-color: var(--primary);
}
.nav-filter-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.nav-filter-head h4 {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-mute);
}
.nav-filter-clear {
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 2px 4px;
  font-size: 11px;
  color: var(--primary);
}
.nav-filter-clear:hover {
  text-decoration: underline;
}
.nav-filter-label {
  display: block;
  margin: 10px 0 4px;
  font-size: 11px;
  color: var(--text-mute);
}
.nav-filter-select {
  width: 100%;
  padding: 6px 8px;
  font: inherit;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.nav-filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag-chip {
  cursor: pointer;
  font: inherit;
  font-size: 11px;
  line-height: 1;
  padding: 5px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-soft);
}
.tag-chip:hover {
  border-color: var(--primary);
  color: var(--text);
}
.tag-chip.on {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.nav-filter-count {
  margin-top: 10px;
  font-size: 11px;
  color: var(--text-mute);
}
.nav-hidden {
  display: none !important;
}