/* ============================================================
   नेपाली — डकुमेन्टेसन साइट
   Dark IDE palette (#7C4DFF accent, #1E1E2E background)
   Layout modelled on NestJS / Django docs (sidebar + topbar)
   ============================================================ */

:root {
  /* IDE core colors */
  --bg: #1E1E2E;
  --bg-soft: #252535;
  --bg-raised: #2B2B3D;
  --border: #3B3B4D;
  --accent: #7C4DFF;
  --accent-soft: #B388FF;
  --accent-ink: rgba(124, 77, 255, 0.16);

  /* text */
  --text: #D4D4D4;
  --text-strong: #EDEDF2;
  --text-body: #C6C6D2;
  --muted: #9A9AAF;

  /* IDE syntax token colors */
  --tk-keyword: #7C4DFF;
  --tk-const: #26C6DA;
  --tk-type: #4FC3F7;
  --tk-literal: #FFD54F;
  --tk-logical: #CE93D8;
  --tk-builtin: #FF8A65;
  --tk-string: #81C784;
  --tk-number: #FFB74D;
  --tk-comment: #6B6B7B;
  --tk-operator: #CE93D8;

  --radius: 10px;
  --sidebar-w: 262px;
  --topbar-h: 58px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans Devanagari", "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  margin: 0;
}

h1, h2, h3, h4 { color: var(--text-strong); font-weight: 700; letter-spacing: -0.01em; }

a { color: var(--accent-soft); text-decoration: none; }
a:hover { color: #d3c2ff; text-decoration: underline; }

section[id] { scroll-margin-top: calc(var(--topbar-h) + 14px); }

::selection { background: rgba(124, 77, 255, 0.45); color: #fff; }

/* ---------- Scrollbars (IDE feel) ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ============================================================
   Topbar (like Django/NestJS header)
   ============================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 20px;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-strong);
  border-radius: 8px;
  padding: 4px 10px;
  font-size: 1.1rem;
  cursor: pointer;
}
.nav-toggle:hover { border-color: var(--accent); color: var(--accent-soft); }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; color: #fff; }
.brand img { border-radius: 7px; }
.brand-docs {
  background: rgba(124, 77, 255, 0.18);
  color: var(--accent-soft);
  border: 1px solid rgba(124, 77, 255, 0.45);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  padding: 2px 8px;
  border-radius: 999px;
}

.search-wrap { flex: 1; max-width: 460px; margin: 0 auto; }
.search-wrap input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 0.42rem 0.95rem;
  font-size: 0.9rem;
  font-family: inherit;
}
.search-wrap input::placeholder { color: var(--muted); }
.search-wrap input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124, 77, 255, 0.18); }

.github-link {
  color: var(--text-strong);
  border: 1px solid var(--border);
  padding: 0.4rem 0.95rem;
  border-radius: 8px;
  font-size: 0.85rem;
  white-space: nowrap;
  font-weight: 600;
}
.github-link:hover { border-color: var(--accent); color: var(--accent-soft); text-decoration: none; }

@media (max-width: 575.98px) {
  .brand-docs { display: none; }
  .github-link { font-size: 0.78rem; padding: 0.35rem 0.7rem; }
  .search-wrap { max-width: 200px; }
}

/* ============================================================
   Layout: sidebar + content
   ============================================================ */
.layout { max-width: 1480px; margin: 0 auto; display: flex; overflow-x: clip; }

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  position: sticky;
  top: var(--topbar-h);
  align-self: flex-start;
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 1.3rem 0.7rem 2rem;
  border-right: 1px solid var(--border);
}

.sidebar-nav .nav-group { margin-bottom: 1.5rem; }

.nav-title {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  padding: 0 0.7rem;
  margin-bottom: 0.4rem;
}

.sidebar-nav a {
  display: block;
  color: var(--text);
  padding: 0.38rem 0.7rem;
  border-radius: 7px;
  font-size: 0.9rem;
}
.sidebar-nav a:hover { background: var(--bg-soft); color: #fff; text-decoration: none; }
.sidebar-nav a.active {
  background: var(--accent-ink);
  color: var(--accent-soft);
  font-weight: 600;
}
.sidebar-nav a.nav-sub { padding-left: 1.6rem; font-size: 0.84rem; }

.sidebar-scrim {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 18, 0.6);
  z-index: 1040;
}

@media (max-width: 991.98px) {
  .nav-toggle { display: inline-flex; }
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1050;
    width: min(300px, 82vw);
    height: 100vh;
    background: var(--bg);
    transform: translateX(-105%);
    transition: transform 0.22s ease;
    padding-top: 3.4rem;
    border-right: 1px solid var(--border);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
  }
  body.sidebar-open .sidebar { transform: none; }
  body.sidebar-open .sidebar-scrim { display: block; }
}

/* ============================================================
   Content
   ============================================================ */
.content {
  flex: 1;
  min-width: 0;
  max-width: 920px;
  padding: 2.4rem 2.2rem 4rem;
}

.content h1 { font-size: clamp(1.8rem, 4.5vw, 2.4rem); margin: 0 0 0.4rem; }
.content h2 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  margin: 2.7rem 0 0.8rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--border);
}
.content h3 { font-size: 1.08rem; margin: 1.8rem 0 0.5rem; color: var(--accent-soft); }
.content p { color: var(--text-body); }

.lead-page { color: var(--muted); font-size: 1.06rem; margin-bottom: 1.6rem; }

/* ============================================================
   Code blocks (IDE editor style with header bar)
   ============================================================ */
.code-block {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 1.4rem 0;
}
.code-block code {
  display: block;
  padding: 1rem 1.2rem;
  overflow-x: auto;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.75;
  white-space: pre;
  color: var(--text);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
  padding: 0.4rem 0.9rem;
}
.code-lang {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}
.code-lang::before { content: "❯ "; color: var(--accent); }

.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.74rem;
  padding: 0.2rem 0.7rem;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent-soft); }
.copy-btn.copied { background: #2E7D32; border-color: #2E7D32; color: #fff; }

/* Syntax token colors — exact match to desktop IDE */
.tk-kw { color: var(--tk-keyword); }
.tk-const { color: var(--tk-const); }
.tk-type { color: var(--tk-type); }
.tk-lit { color: var(--tk-literal); }
.tk-logic { color: var(--tk-logical); }
.tk-builtin { color: var(--tk-builtin); }
.tk-fn { color: var(--tk-builtin); }
.tk-str { color: var(--tk-string); }
.tk-num { color: var(--tk-number); }
.tk-com { color: var(--tk-comment); font-style: italic; }
.tk-op { color: var(--tk-operator); }

/* Inline code */
code {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.08em 0.38em;
  color: #E7DEFF;
}

/* ============================================================
   Tables
   ============================================================ */
.table-responsive-sm { overflow-x: auto; }
.table-doc {
  --bs-table-bg: transparent;
  --bs-table-color: var(--text-body);
  --bs-table-border-color: var(--border);
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.9rem;
}
.table-doc th,
.table-doc td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.85rem;
  text-align: left;
  vertical-align: top;
  color: var(--text-body);
  background: transparent;
}
.table-doc th { background: var(--bg-raised); color: var(--text-strong); font-weight: 600; }
.table-doc code { white-space: nowrap; }

/* ============================================================
   Notes / callouts
   ============================================================ */
.note {
  border-left: 3px solid var(--accent);
  background: rgba(124, 77, 255, 0.08);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.9rem 1.15rem;
  margin: 1.3rem 0;
}
.note-warn { border-left-color: var(--tk-number); background: rgba(255, 183, 77, 0.07); }
.note strong { color: var(--text-strong); }

/* ============================================================
   Table of contents
   ============================================================ */
.toc {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.05rem 1.4rem;
  font-size: 0.92rem;
  margin: 1.4rem 0;
}
.toc strong { display: block; margin-bottom: 0.4rem; color: var(--text-strong); }
.toc ol { margin: 0; padding-left: 1.2rem; columns: 2; column-gap: 2rem; }
.toc li { margin-bottom: 0.15rem; break-inside: avoid; }
.toc a { color: var(--text); text-decoration: none; }
.toc a:hover { color: var(--accent-soft); }
.toc a.active { color: var(--accent-soft); font-weight: 600; }
@media (max-width: 576px) { .toc ol { columns: 1; } }

/* ============================================================
   Steps
   ============================================================ */
.steps { counter-reset: step; list-style: none; padding-left: 0; }
.steps li {
  position: relative;
  padding-left: 3.1rem;
  margin-bottom: 1.15rem;
  color: var(--text-body);
}
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.92rem;
}

/* ============================================================
   Feature cards (landing)
   ============================================================ */
.card-feature {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  height: 100%;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.card-feature:hover { transform: translateY(-3px); border-color: var(--accent); }
.card-feature .icon {
  width: 42px;
  height: 42px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
  margin-bottom: 0.9rem;
}
.card-feature h3 { color: var(--text-strong); font-size: 1rem; margin-bottom: 0.35rem; }
.card-feature p { color: var(--muted); font-size: 0.9rem; margin: 0; }

.hero {
  padding: 1.2rem 0 0.6rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}
.hero .lead { color: var(--muted); font-size: 1.1rem; max-width: 680px; }

.preview-img {
  display: block;
  width: auto;
  max-width: min(100%, 820px);
  height: auto;
  margin: 1.4rem auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}
.preview-cap {
  margin: -0.6rem 0 1.2rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn-primary-custom {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 0.55rem 1.4rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
}
.btn-primary-custom:hover { background: #9164ff; border-color: #9164ff; color: #fff; text-decoration: none; }

.btn-outline-custom {
  display: inline-block;
  border: 1px solid var(--accent);
  color: var(--accent-soft);
  font-weight: 600;
  padding: 0.55rem 1.4rem;
  border-radius: 8px;
}
.btn-outline-custom:hover { background: var(--accent-ink); color: var(--accent-soft); text-decoration: none; }

/* ============================================================
   Prev / Next pagination (like NestJS)
   ============================================================ */
.page-nav {
  display: flex;
  gap: 1rem;
  margin-top: 3.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}
.page-nav a {
  display: block;
  flex: 1;
  padding: 0.7rem 1rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  min-width: 0;
}
.page-nav a:hover { border-color: var(--accent); text-decoration: none; }
.page-nav a small { display: block; color: var(--muted); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; }
.page-nav a strong { color: var(--text-strong); }
.page-nav .next { text-align: right; margin-left: auto; }

/* ============================================================
   Changelog
   ============================================================ */
.version {
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  margin-bottom: 1.4rem;
  background: var(--bg-raised);
}
.version h3 { margin: 0 0 0.15rem; color: var(--text-strong); }
.version .date { color: var(--muted); font-size: 0.85rem; }
.version ul { margin: 0.6rem 0 0; padding-left: 1.2rem; color: var(--text-body); }

/* ============================================================
   How-it-works pipeline diagram (intro / landing)
   ============================================================ */
.pipeline {
  display: flex;
  flex-direction: column;
  margin: 1.6rem 0;
}

.pipe-row {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.pipe-box {
  flex: 1;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 0.8rem 1.1rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.pipe-box:hover { border-color: var(--accent); transform: translateX(2px); }

.pipe-box.pipe-src { border-left-color: var(--tk-literal); }
.pipe-box.pipe-vm { border-left-color: var(--tk-string); }
.pipe-box.pipe-out { border-left-color: var(--tk-const); }

.pipe-title {
  font-weight: 700;
  color: var(--text-strong);
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.pipe-step {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.pipe-en {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin-left: auto;
  white-space: nowrap;
}
.pipe-desc { font-size: 0.84rem; color: var(--text-body); margin: 0.2rem 0 0; }

.pipe-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-soft);
  font-size: 1.1rem;
  line-height: 1;
  padding: 0.15rem 0;
}

/* Toolchain structure chips */
.structure {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.6rem;
  margin: 1.2rem 0;
}
.structure-item {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.85rem;
}
.structure-item .s-title {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-soft);
}
.structure-item .s-role {
  font-size: 0.76rem;
  color: var(--muted);
  margin-top: 0.1rem;
}
.structure-item.s-featured {
  background: var(--accent-ink);
  border-color: rgba(124, 77, 255, 0.45);
}

@media (max-width: 576px) {
  .pipe-row { gap: 0.5rem; }
  .pipe-box { padding: 0.65rem 0.85rem; }
  .pipe-en { display: none; }
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--muted);
  padding: 1.4rem 1rem;
  text-align: center;
  font-size: 0.85rem;
}
.footer a { color: var(--accent-soft); }