/* Helix Docs — dark theme */

:root {
  --bg: #080c10;
  --bg-elevated: #0f1419;
  --surface: #151c24;
  --surface-hover: #1a232e;
  --border: #243040;
  --border-subtle: #1c2633;
  --text: #e8eef4;
  --text-muted: #8b9cb3;
  --text-dim: #5c6d82;
  --accent: #00e5c0;
  --accent-dim: #00b89a;
  --accent-glow: rgba(0, 229, 192, 0.15);
  --accent-2: #48cae4;
  --accent-3: #7b61ff;
  --danger: #ff6b6b;
  --warning: #ffd166;
  --success: #00e5c0;
  --radius: 10px;
  --radius-sm: 6px;
  --sidebar-w: 280px;
  --header-h: 64px;
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --transition: 0.18s ease;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
}

body.sidebar-open {
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 229, 192, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(123, 97, 255, 0.05), transparent),
    radial-gradient(ellipse 50% 30% at 0% 80%, rgba(72, 202, 228, 0.04), transparent);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-2); }

/* ─── Layout ─── */

.app {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
  min-height: 100dvh;
}

.site-chrome {
  position: sticky;
  top: 0;
  z-index: 100;
}

.header {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0 max(1rem, env(safe-area-inset-right)) 0 max(1rem, env(safe-area-inset-left));
  padding-top: env(safe-area-inset-top);
  min-height: 64px;
  background: rgba(8, 12, 16, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  overflow: visible;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--text);
}

.brand img { width: 36px; height: 36px; }

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-tag {
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
}

.site-nav-link {
  padding: 0.45rem 0.85rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.site-nav-link:hover {
  color: var(--text);
  background: var(--surface-hover);
}

.site-nav-link.active {
  color: var(--accent);
  background: var(--accent-glow);
}

.is-hidden {
  display: none !important;
}

.seo-crawl {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.seo-crawl a {
  color: var(--accent);
}

.search-wrap {
  flex: 1;
  max-width: 480px;
  min-width: 0;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.55rem 1rem 0.55rem 2.4rem;
  font-size: 0.9rem;
  font-family: var(--font);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-input::placeholder { color: var(--text-dim); }

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
  font-size: 0.9rem;
}

.search-results {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  max-height: 360px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 200;
}

.search-results.open { display: block; }

.search-result {
  display: block;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: background var(--transition);
}

.search-result:hover,
.search-result.active { background: var(--surface-hover); }

.search-result-title {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text);
}

.search-result-snippet {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-empty {
  padding: 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-align: center;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.pypi-link,
.telegram-link,
.github-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-decoration: none;
}

.pypi-link:hover,
.github-link:hover,
.telegram-link:hover {
  color: var(--text);
  border-color: var(--accent-dim);
}

.pypi-link svg,
.telegram-link svg,
.github-link svg {
  width: 1.1rem;
  height: 1.1rem;
  fill: currentColor;
}

.lang-toggle {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.lang-btn {
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font);
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.lang-btn.active {
  color: var(--bg);
  background: var(--accent);
}

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  padding: 0.4rem 0.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  font-size: 1.1rem;
  -webkit-tap-highlight-color: transparent;
}

.menu-toggle[aria-expanded="true"] {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: var(--accent-glow);
}

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  top: var(--header-h);
  z-index: 90;
  background: rgba(0, 0, 0, 0.55);
}

.sidebar-backdrop.open {
  display: block;
}

.main {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 0;
}

.marketing-layout .main {
  grid-template-columns: 1fr;
}

.marketing-layout .sidebar {
  display: none;
}

.marketing-layout .content {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.sidebar {
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  height: calc(100dvh - var(--header-h));
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding: 1.25rem 0;
  padding-bottom: max(1.25rem, env(safe-area-inset-bottom));
  border-right: 1px solid var(--border-subtle);
  background: rgba(15, 20, 25, 0.6);
}

.sidebar-section {
  padding: 0 1rem;
  margin-bottom: 1.25rem;
}

.sidebar-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  padding: 0 0.75rem;
  margin-bottom: 0.4rem;
}

.nav-link {
  display: block;
  padding: 0.55rem 0.75rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: all var(--transition);
}

.nav-link:hover {
  color: var(--text);
  background: var(--surface-hover);
}

.nav-link.active {
  color: var(--accent);
  background: var(--accent-glow);
  border-left-color: var(--accent);
  font-weight: 500;
}

.content {
  padding: 2rem 2.5rem 4rem;
  padding-left: max(2.5rem, env(safe-area-inset-left));
  padding-right: max(2.5rem, env(safe-area-inset-right));
  padding-bottom: max(4rem, env(safe-area-inset-bottom));
  max-width: 900px;
  min-width: 0;
}

/* ─── Marketing landing ─── */

.marketing-content {
  padding-top: 2.5rem;
}

.hero {
  margin-bottom: 3rem;
}

.marketing-hero {
  padding-bottom: 0.5rem;
}

.hero-badge-ru {
  color: #ffd166;
  background: rgba(255, 209, 102, 0.1);
  border-color: rgba(255, 209, 102, 0.35);
}

.ru-callout {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.5rem 1.75rem;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, rgba(255, 209, 102, 0.06), rgba(0, 229, 192, 0.04));
  border: 1px solid rgba(255, 209, 102, 0.2);
  border-radius: var(--radius);
}

.ru-callout-flag {
  font-size: 2.25rem;
  line-height: 1;
  flex-shrink: 0;
}

.ru-callout h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.ru-callout p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.telegram-callout {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.65rem 1.85rem;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, rgba(42, 171, 238, 0.14), rgba(34, 158, 217, 0.06));
  border: 1px solid rgba(42, 171, 238, 0.38);
  border-radius: var(--radius);
  box-shadow: 0 10px 40px rgba(42, 171, 238, 0.08);
}

.telegram-callout-icon {
  display: grid;
  place-items: center;
  width: 3.25rem;
  height: 3.25rem;
  flex-shrink: 0;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(145deg, #2aabee, #1d8ec8);
  box-shadow: 0 4px 18px rgba(42, 171, 238, 0.35);
}

.telegram-callout-body h2 {
  margin: 0 0 0.45rem;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
}

.telegram-callout-body p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
  max-width: 52rem;
}

.profiles-callout {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.5rem 1.75rem;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, rgba(0, 229, 192, 0.06), rgba(99, 179, 237, 0.05));
  border: 1px solid rgba(0, 229, 192, 0.22);
  border-radius: var(--radius);
}

.profiles-callout-icon {
  font-size: 2.25rem;
  line-height: 1;
  flex-shrink: 0;
}

.profiles-callout h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.profiles-callout p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.profiles-callout-link {
  display: inline-flex;
  margin-top: 0.25rem;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.advantage-card {
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}

.advantage-card:hover {
  border-color: var(--border);
  transform: translateY(-2px);
}

.advantage-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
}

.advantage-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.use-case-card {
  position: relative;
  padding: 1.25rem 1.25rem 1.25rem 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}

.use-case-card:hover {
  border-color: var(--accent-dim);
}

.use-case-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  letter-spacing: 0.08em;
}

.use-case-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.use-case-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.85rem;
  margin-bottom: 3rem;
}

.how-card {
  padding: 1rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.how-card code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
  word-break: break-all;
}

.how-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.cta-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1.75rem;
  margin-bottom: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cta-band p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent);
}

.docs-hub {
  margin-bottom: 2rem;
}

.docs-hub h1 {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.docs-hub-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 0 1.25rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 229, 192, 0.25);
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 0 1.25rem;
}

.hero-install {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  margin-bottom: 1.5rem;
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 720px;
}

.hero-install-cmd {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--accent);
  background: var(--bg);
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.hero-install-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-install-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.hero-install-link:hover {
  text-decoration: underline;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 229, 192, 0.3);
  color: var(--bg);
}

.btn-ghost {
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--accent-dim);
}

.btn-telegram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.65rem 1.15rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #2aabee, #1d8ec8);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(42, 171, 238, 0.28);
  transition: transform var(--transition), filter var(--transition), box-shadow var(--transition);
}

.btn-telegram:hover {
  color: #fff;
  filter: brightness(1.07);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(42, 171, 238, 0.38);
}

.btn-donate {
  color: #ffb4c8;
  background: rgba(255, 80, 120, 0.1);
  border: 1px solid rgba(255, 120, 150, 0.35);
}

.btn-donate:hover {
  color: #ffd0dc;
  border-color: rgba(255, 120, 150, 0.55);
  background: rgba(255, 80, 120, 0.18);
  transform: translateY(-1px);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.feature-card {
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  border-color: var(--border);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 0.6rem;
}

.feature-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  color: var(--text);
}

.feature-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.aspects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.aspect-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.88rem;
  transition: all var(--transition);
}

.aspect-link:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: var(--accent-glow);
}

.aspect-link .arrow { margin-left: auto; opacity: 0.4; }

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 1.25rem;
  color: var(--text);
}

/* ─── Markdown content ─── */

.doc-content h1 {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.doc-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  color: var(--text);
}

.doc-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--accent-2);
}

.doc-content h4 { font-size: 1rem; margin: 1.25rem 0 0.4rem; }

.doc-content p { margin: 0 0 1rem; color: var(--text-muted); }

.doc-content ul, .doc-content ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

.doc-content li { margin-bottom: 0.35rem; }

.doc-content strong { color: var(--text); font-weight: 600; }

.doc-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 0.15em 0.4em;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--accent-2);
}

.doc-content pre {
  margin: 0 0 1.25rem;
  padding: 1rem 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

.doc-content img {
  max-width: 100%;
  height: auto;
}

.doc-content a {
  color: var(--accent);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.doc-content pre code {
  padding: 0;
  background: none;
  border: none;
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.55;
}

.doc-content .table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 0 1.25rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.25rem;
  font-size: 0.88rem;
}

.doc-content .table-scroll table {
  margin: 0;
  min-width: 520px;
}

.doc-content th,
.doc-content td {
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--border-subtle);
  text-align: left;
}

.doc-content th {
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
}

.doc-content td { color: var(--text-muted); }

.doc-content tr:hover td { background: rgba(255,255,255,0.02); }

.doc-content blockquote {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-glow);
  color: var(--text-muted);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.doc-content hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 2rem 0;
}

.doc-loading {
  color: var(--text-dim);
  padding: 2rem 0;
}

.doc-error {
  color: var(--danger);
  padding: 2rem 0;
}

.breadcrumb {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

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

.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer a:hover {
  color: var(--accent);
}

.kbd {
  display: inline-block;
  padding: 0.1em 0.45em;
  font-family: var(--font-mono);
  font-size: 0.78em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
}

/* ─── Responsive ─── */

@media (max-width: 900px) {
  .main { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: 0;
    top: var(--header-h);
    width: min(var(--sidebar-w), 88vw);
    max-width: 100%;
    z-index: 110;
    transform: translateX(-105%);
    transition: transform var(--transition);
    box-shadow: var(--shadow);
    background: var(--bg-elevated);
    pointer-events: auto;
    -webkit-overflow-scrolling: touch;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar:not(.open) { pointer-events: none; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .content {
    padding: 1.5rem 1.25rem 3rem;
    padding-left: max(1.25rem, env(safe-area-inset-left));
    padding-right: max(1.25rem, env(safe-area-inset-right));
  }
  .hero h1 { font-size: 1.85rem; }
  .hero-lead { font-size: 1rem; }
  .search-wrap { max-width: none; }

  .search-results {
    position: static;
    max-height: min(42vh, 300px);
    margin-top: 0.35rem;
    box-shadow: none;
  }

  .search-results:not(.open) {
    display: none;
  }

  .features-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: 1fr; }
  .use-cases-grid { grid-template-columns: 1fr; }
  .how-grid { grid-template-columns: 1fr; }
  .ru-callout { flex-direction: column; gap: 0.75rem; }
  .telegram-callout { flex-direction: column; gap: 0.85rem; padding: 1.25rem 1.15rem; }
  .profiles-callout { flex-direction: column; gap: 0.75rem; }
  .cta-band { flex-direction: column; align-items: stretch; text-align: center; }
  .aspects-grid { grid-template-columns: 1fr; }
  .doc-content h1 { font-size: 1.65rem; }
  .doc-content h2 { font-size: 1.2rem; }
  .doc-content pre {
    padding: 0.85rem 1rem;
    font-size: 0.8rem;
  }
  .doc-content pre code { font-size: 0.78rem; }
}

@media (max-width: 640px) {
  .header {
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.75rem;
    padding-top: max(0.35rem, env(safe-area-inset-top));
    padding-bottom: 0.35rem;
  }

  .brand img { width: 30px; height: 30px; }
  .brand-name { font-size: 1.05rem; }
  .brand-tag { display: none; }

  .site-nav-link {
    padding: 0.35rem 0.6rem;
    font-size: 0.8rem;
  }

  .search-wrap {
    order: 3;
    flex: 1 1 100%;
    width: 100%;
  }

  .search-input {
    font-size: 16px;
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
  }

  .lang-btn {
    min-width: 40px;
    min-height: 40px;
    padding: 0.45rem 0.75rem;
  }

  .hero h1 { font-size: 1.55rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; width: 100%; }
  .section-title { font-size: 1.15rem; }
  .breadcrumb { font-size: 0.75rem; }
}

@media (max-width: 380px) {
  .header-actions { gap: 0.35rem; }
  .content { padding-left: 1rem; padding-right: 1rem; }
}