/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ===== TOKENS ===== */
:root {
  --bg:           #07090f;
  --bg2:          #0c1018;
  --glass:        rgba(255,255,255,0.04);
  --glass-md:     rgba(255,255,255,0.07);
  --glass-hi:     rgba(255,255,255,0.11);
  --border:       rgba(255,255,255,0.07);
  --border-md:    rgba(255,255,255,0.13);
  --text:         #dce3ee;
  --muted:        #7e8fa5;
  --faint:        #48576b;
  --accent:       #22d3ee;
  --accent-dim:   rgba(34,211,238,0.12);
  --accent-glow:  rgba(34,211,238,0.06);
  --accent2:      #818cf8;
  --accent2-dim:  rgba(129,140,248,0.1);
  --warn-bg:      rgba(251,191,36,0.07);
  --warn-border:  rgba(251,191,36,0.22);
  --warn-text:    #fbbf24;
  --code-bg:      rgba(0,0,0,0.38);
  --code-border:  rgba(255,255,255,0.06);
  --hdr-bg:       rgba(7,9,15,0.8);
  --side-bg:      rgba(7,9,15,0.95);
  --sidebar-w:    264px;
  --header-h:     56px;
  --r:            10px;
  --r-sm:         6px;
  --r-lg:         14px;
  --content-max:  780px;
  --doc-max:      min(52rem, 100%);
  --doc-rhythm:   1.75rem;
}

[data-theme="light"] {
  --bg:           #f0f4fa;
  --bg2:          #ffffff;
  --glass:        rgba(255,255,255,0.55);
  --glass-md:     rgba(255,255,255,0.75);
  --glass-hi:     rgba(255,255,255,0.92);
  --border:       rgba(0,0,0,0.06);
  --border-md:    rgba(0,0,0,0.12);
  --text:         #0f172a;
  --muted:        #475569;
  --faint:        #94a3b8;
  --accent:       #0891b2;
  --accent-dim:   rgba(8,145,178,0.1);
  --accent-glow:  rgba(8,145,178,0.05);
  --accent2:      #6366f1;
  --accent2-dim:  rgba(99,102,241,0.08);
  --warn-bg:      rgba(251,191,36,0.09);
  --warn-border:  rgba(251,191,36,0.35);
  --warn-text:    #92400e;
  --code-bg:      rgba(0,0,0,0.04);
  --code-border:  rgba(0,0,0,0.08);
  --hdr-bg:       rgba(240,244,250,0.85);
  --side-bg:      rgba(240,244,250,0.97);
}

/* ===== BASE ===== */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 10% 10%, rgba(34,211,238,0.07) 0%, transparent 55%),
    radial-gradient(ellipse 55% 50% at 88% 78%, rgba(129,140,248,0.06) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] body::before {
  background:
    radial-gradient(ellipse 70% 55% at 10% 10%, rgba(8,145,178,0.05) 0%, transparent 55%),
    radial-gradient(ellipse 55% 50% at 88% 78%, rgba(99,102,241,0.04) 0%, transparent 55%);
}

h1, h2, h3, h4 { font-weight: 600; line-height: 1.3; letter-spacing: -0.02em; }
h1 { font-size: 1.9rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1rem; }
p { color: var(--muted); }
p strong { color: var(--text); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

code, pre { font-family: "IBM Plex Mono", "Fira Code", ui-monospace, monospace; font-size: 0.875em; }

code {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--r-sm);
  padding: 0.15em 0.42em;
  font-size: 0.83em;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--r);
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.6;
}

pre code { background: none; border: none; padding: 0; font-size: 0.875rem; }

ul, ol { padding-left: 1.4rem; color: var(--muted); }
li { margin: 0.3rem 0; }
li strong { color: var(--text); }

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--hdr-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 200;
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  gap: 0.75rem;
}

.header-logo {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}
.header-logo span { color: var(--accent); }
.header-logo:hover { text-decoration: none; }

.header-spacer { flex: 1; }

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.header-nav a,
.header-nav button {
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  padding: 0.32rem 0.6rem;
  border-radius: var(--r-sm);
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  transition: color 0.14s, background 0.14s;
  white-space: nowrap;
}

.header-nav a:hover,
.header-nav button:hover {
  color: var(--text);
  background: var(--glass-md);
  text-decoration: none;
}

.header-nav a.active { color: var(--text); font-weight: 600; }

.header-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-dim);
  border: 1px solid rgba(34,211,238,0.18);
  color: var(--accent);
  text-decoration: none;
  transition: background 0.14s;
}
[data-theme="light"] .header-badge { border-color: rgba(8,145,178,0.28); }
.header-badge:hover { background: rgba(34,211,238,0.2); text-decoration: none; }
[data-theme="light"] .header-badge:hover { background: rgba(8,145,178,0.18); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.search-open-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.search-open-btn .search-kbd {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.12rem 0.38rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-md);
  color: var(--faint);
  background: var(--glass);
}

@media (max-width: 720px) {
  .search-open-btn .search-kbd {
    display: none;
  }
}

.search-modal {
  z-index: 500;
  max-width: min(32rem, calc(100vw - 1.5rem));
  width: 100%;
  margin: auto;
  padding: 0;
  border: none;
  background: transparent;
}

.search-modal::backdrop {
  background: rgba(0, 0, 0, 0.52);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

[data-theme="light"] .search-modal::backdrop {
  background: rgba(15, 23, 42, 0.35);
}

.search-modal-panel {
  padding: 1rem 1.1rem 1.1rem;
  border-radius: var(--r-lg);
  border: 1px solid var(--border-md);
  background: var(--bg2);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
}

[data-theme="light"] .search-modal-panel {
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
}

.search-modal-input {
  width: 100%;
  box-sizing: border-box;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--code-bg);
  border: 1px solid var(--border-md);
  border-radius: var(--r-sm);
  outline: none;
}

.search-modal-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-dim);
}

.search-modal-hint {
  font-size: 0.78rem;
  color: var(--faint);
  margin: 0.55rem 0 0.35rem;
  line-height: 1.45;
}

.search-results {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: min(50vh, 22rem);
  overflow-y: auto;
  scrollbar-gutter: stable;
}

.search-results li {
  margin: 0;
  border-bottom: 1px solid var(--border);
}

.search-results li:last-child {
  border-bottom: none;
}

.search-result-link {
  display: block;
  padding: 0.55rem 0.35rem;
  color: var(--text);
  text-decoration: none;
  border-radius: var(--r-sm);
}

.search-result-link:hover {
  background: var(--glass-md);
  text-decoration: none;
}

.search-result-title {
  font-size: 0.88rem;
  font-weight: 600;
}

.search-modal-close {
  margin-top: 0.75rem;
  width: 100%;
  padding: 0.45rem;
  font-size: 0.82rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--muted);
  background: var(--glass);
  border: 1px solid var(--border-md);
  border-radius: var(--r-sm);
  cursor: pointer;
}

.search-modal-close:hover {
  color: var(--text);
  background: var(--glass-md);
}

.menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--glass);
  cursor: pointer;
  color: var(--text);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}
.menu-btn svg { display: block; }

body.nav-drawer-open {
  overflow: hidden;
}

/* ===== LAYOUT ===== */
.page-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
  padding-top: var(--header-h);
  position: relative;
}

/* ===== SIDEBAR ===== */
.sidebar {
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--side-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-right: 1px solid var(--border);
  padding: 1.5rem 0 3rem;
  scrollbar-width: thin;
  scrollbar-color: var(--border-md) transparent;
}
.sidebar::-webkit-scrollbar { width: 3px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-md); border-radius: 3px; }

.sidebar-group { padding: 0 0.75rem; margin-bottom: 1.5rem; }

.sidebar-label {
  display: block;
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--faint);
  padding: 0 0.55rem;
  margin-bottom: 0.3rem;
}

.sidebar-link {
  display: block;
  padding: 0.285rem 0.55rem;
  border-radius: var(--r-sm);
  font-size: 0.845rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.12s, background 0.12s;
  line-height: 1.4;
}
.sidebar-link:hover { color: var(--text); background: var(--glass-md); text-decoration: none; }
.sidebar-link.active { color: var(--accent); background: var(--accent-dim); font-weight: 500; }

.sidebar-divider { height: 1px; background: var(--border); margin: 0.85rem 0.75rem; }

.sidebar-ext { font-size: 0.8rem; color: var(--faint); }
.sidebar-ext::after { content: ' ↗'; }

/* ===== CONTENT ===== */
.content {
  min-width: 0;
  padding: 2.5rem 2.5rem 5rem;
}

.content-inner { max-width: var(--content-max); }

/* ===== SECTION ===== */
.doc-section { margin-bottom: 3.5rem; }

.section-heading {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.25rem;
}

.section-heading h2 { margin: 0; }

.section-icon {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  background: var(--glass-md);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.doc-section h3 { margin: 1.75rem 0 0.7rem; color: var(--text); }
.doc-section p { margin: 0.6rem 0; }
.doc-section > ul, .doc-section > ol { margin: 0.65rem 0; }

#docSectionPanels .doc-section { display: none; }
#docSectionPanels .doc-section.is-active { display: block; }

.dts-mount { margin-top: 1rem; }
.dts-mount pre {
  max-height: min(70vh, 44rem);
  overflow: auto;
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.45;
}
.dts-error { color: var(--warn-text); margin: 0; font-size: 0.9rem; }

/* ===== TABLES ===== */
.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  border-radius: var(--r);
  border: 1px solid var(--border);
  background: var(--glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }

th {
  background: var(--glass-md);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  color: var(--muted);
  line-height: 1.5;
}
td strong { color: var(--text); }
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--glass); }

/* ===== CODE BLOCK ===== */
.code-lang-label {
  position: absolute;
  top: 0.55rem;
  left: 0.85rem;
  z-index: 1;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  pointer-events: none;
  font-family: inherit;
}

.code-block:has(.code-lang-label) pre {
  padding-top: 2.15rem;
}

.doc-markdown .codehilite {
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
}

.code-block .codehilite pre {
  background: transparent;
  border: none;
}

.codehilite code span {
  font-style: inherit;
  font-weight: inherit;
}

.code-block {
  position: relative;
  margin: 1rem 0;
  border-radius: var(--r-lg);
  border: 1px solid var(--border-md);
  background: var(--code-bg);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .code-block {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.code-block pre {
  margin: 0;
  border: none;
  background: transparent;
  padding: 1.15rem 1.35rem 1.15rem 1.25rem;
  padding-right: 4.5rem;
  max-height: min(70vh, 36rem);
  overflow: auto;
  scrollbar-gutter: stable;
  tab-size: 2;
}

.copy-btn {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  z-index: 2;
  padding: 0.35rem 0.65rem;
  font-size: 0.74rem;
  font-weight: 600;
  font-family: inherit;
  background: var(--glass-hi);
  border: 1px solid var(--border-md);
  border-radius: var(--r-sm);
  color: var(--muted);
  cursor: pointer;
  transition: color 0.14s, background 0.14s, border-color 0.14s;
}
.copy-btn:hover { color: var(--text); background: var(--glass-md); border-color: var(--accent); }
.copy-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.copy-btn.copied { color: #22c55e; border-color: rgba(34,197,94,0.35); }

/* ===== BANNER ===== */
.banner {
  display: block;
  padding: 0.85rem 1.1rem;
  border-radius: var(--r);
  border: 1px solid var(--warn-border);
  background: var(--warn-bg);
  color: var(--warn-text);
  font-size: 0.875rem;
  margin: 0 0 1.75rem;
  line-height: 1.55;
}
.banner a { color: var(--warn-text); text-decoration: underline; }
.banner strong { color: inherit; }
.banner code {
  white-space: nowrap;
  vertical-align: baseline;
}

/* ===== TAGS ===== */
.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.65rem 0 1rem; }

.tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  padding: 0.2em 0.5em;
  background: var(--glass-md);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
}

.tag-accent {
  background: var(--accent-dim);
  border-color: rgba(34,211,238,0.2);
  color: var(--accent);
}

/* ===== THEME TOGGLE ===== */
.theme-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.3rem 0.6rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
  transition: all 0.14s;
}
.theme-btn:hover { color: var(--text); background: var(--glass-md); }

/* ===== OVERLAY (mobile) ===== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 150;
  backdrop-filter: blur(2px);
  -webkit-tap-highlight-color: transparent;
}
.sidebar-overlay.visible { display: block; }

@media (min-width: 901px) {
  .sidebar.sidebar--standalone {
    display: none;
  }
}

/* ===== LANDING ===== */
.landing { position: relative; z-index: 1; padding-top: var(--header-h); }

.hero {
  text-align: center;
  padding: 4.5rem 1.5rem 3rem;
  max-width: 680px;
  margin: 0 auto;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  margin-bottom: 1.5rem;
}

.hero-meta .hero-eyebrow { margin-bottom: 0; }

.hero-version { text-transform: none; letter-spacing: 0.02em; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(34,211,238,0.18);
  padding: 0.28rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}
[data-theme="light"] .hero-eyebrow { border-color: rgba(8,145,178,0.25); }

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text) 35%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.install-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-md);
  border-radius: var(--r);
  padding: 0.65rem 1.1rem;
  margin-bottom: 1.75rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.875rem;
  color: var(--text);
}
.install-pill .prompt { color: var(--accent); user-select: none; }

.hero-ctas { display: flex; gap: 0.7rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--r);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #07090f;
  border-color: transparent;
}
.btn-primary:hover { background: #5eead4; text-decoration: none; color: #07090f; }
[data-theme="light"] .btn-primary { color: #fff; }
[data-theme="light"] .btn-primary:hover { color: #fff; background: #0e7490; }

.btn-ghost {
  background: var(--glass);
  border-color: var(--border-md);
  color: var(--text);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: var(--glass-md); text-decoration: none; color: var(--text); }

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem;
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 2.5rem;
}

.feature-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.35rem 1.25rem;
  transition: border-color 0.18s, background 0.18s;
}
.feature-card:hover { border-color: var(--border-md); background: var(--glass-md); }
.feature-icon { font-size: 1.4rem; margin-bottom: 0.65rem; }
.feature-card h3 { font-size: 0.92rem; margin-bottom: 0.35rem; color: var(--text); }
.feature-card p { font-size: 0.845rem; color: var(--muted); line-height: 1.55; margin: 0; }

/* Landing section */
.landing-section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1rem 1.5rem 2.5rem;
}
.landing-section > h2 { font-size: 1.35rem; margin-bottom: 1.1rem; }

.docs-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.docs-card table { margin: 0; }

/* Used-in strip */
.used-strip {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.used-strip a {
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  text-decoration: none;
  color: inherit;
}
.used-strip a:hover .used-strip-sub { color: var(--text); }
.used-strip-logo { height: 24px; width: auto; display: block; flex-shrink: 0; }
.used-strip-copy { display: flex; flex-direction: column; gap: 0.1rem; }
.used-strip-label { font-size: 0.66rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; color: var(--faint); }
.used-strip-sub { font-size: 0.875rem; color: var(--muted); }

/* Site footer */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--faint);
  max-width: 1080px;
  margin: 0 auto;
}
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); text-decoration: none; }

/* Doc page footer */
.doc-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--faint);
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.doc-footer a { color: var(--muted); }
.doc-footer a:hover { color: var(--text); text-decoration: none; }

/* ===== CHANGELOG ===== */
.changelog-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
  position: relative;
  z-index: 1;
}

.page-title { font-size: 1.75rem; margin-bottom: 0.4rem; }
.page-sub { color: var(--muted); font-size: 0.9rem; margin-bottom: 2rem; }

/* markdown rendered changelog */
#changelog-body h1 { font-size: 1.6rem; margin: 0 0 0.5rem; }
#changelog-body h2 {
  font-size: 1.15rem;
  margin: 2.5rem 0 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
#changelog-body h3 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 1.25rem 0 0.45rem;
}
#changelog-body p { margin: 0.55rem 0; color: var(--muted); font-size: 0.9rem; }
#changelog-body ul { padding-left: 1.25rem; color: var(--muted); font-size: 0.9rem; }
#changelog-body li { margin: 0.28rem 0; }
#changelog-body code { font-size: 0.8em; }
#changelog-body a { word-break: break-word; }

/* ===== CALLOUTS ===== */
.callout {
  display: flex;
  gap: 0.75rem;
  padding: 0.85rem 1.1rem;
  border-radius: var(--r);
  border-left: 3px solid var(--accent);
  background: var(--accent-glow);
  font-size: 0.875rem;
  margin: 1rem 0;
  line-height: 1.6;
  color: var(--muted);
}
.callout p { margin: 0; color: var(--muted); }
.callout strong { color: var(--text); }
.callout code { font-size: 0.82em; }
.callout a { color: var(--accent); }

.callout-tip {
  border-left-color: #22c55e;
  background: rgba(34,197,94,0.06);
}
[data-theme="light"] .callout-tip { background: rgba(34,197,94,0.07); }

.callout-warn {
  border-left-color: var(--warn-text);
  background: var(--warn-bg);
  color: var(--warn-text);
}
.callout-warn p { color: var(--warn-text); }
.callout-warn strong { color: var(--warn-text); }

/* Step list */
.step-list { list-style: none; padding: 0; margin: 0.75rem 0; counter-reset: steps; }
.step-list li {
  counter-increment: steps;
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  margin: 0.75rem 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}
.step-list li::before {
  content: counter(steps);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid rgba(34,211,238,0.2);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  margin-top: 0.15rem;
  flex-shrink: 0;
}
.step-list li strong { color: var(--text); }
.step-list li code { font-size: 0.82em; }

/* Function signature bar */
.fn-sig {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  color: var(--muted);
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--r-sm);
  padding: 0.45rem 0.85rem;
  margin: 0 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.fn-sig .ret { color: var(--accent); margin-left: auto; }
.fn-sig .fn-name { color: var(--text); font-weight: 500; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .page-layout { grid-template-columns: 1fr; }

  .sidebar {
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    width: min(var(--sidebar-w), 88vw);
    max-width: 100%;
    z-index: 160;
    transform: translateX(-100%);
    transition: transform 0.24s cubic-bezier(0.4,0,0.2,1);
    padding-top: calc(var(--header-h) + 0.75rem);
    border-right: 1px solid var(--border-md);
    -webkit-overflow-scrolling: touch;
  }
  .sidebar.open { transform: translateX(0); }

  .sidebar.sidebar--standalone {
    display: block;
  }

  .menu-btn { display: flex; }
  .content { padding: 1.75rem 1.25rem 3rem; }

  .hero h1 { font-size: 2rem; }
  .feature-grid { grid-template-columns: 1fr 1fr; }

  .site-footer { max-width: 100%; padding: 1.5rem 1.25rem; }
  .landing-section { padding: 1rem 1.25rem 2rem; }
}

@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.7rem; }
  .hero-sub { font-size: 0.95rem; }
  .header-nav a:not(.header-badge) { display: none; }
  .site-header {
    padding: 0 0.75rem;
    gap: 0.5rem;
  }
  .header-nav {
    gap: 0.05rem;
    flex-shrink: 1;
    min-width: 0;
  }
  .header-nav .header-badge {
    padding: 0.24rem 0.5rem;
    font-size: 0.72rem;
  }
  .header-nav .theme-btn {
    padding: 0.28rem 0.45rem;
    font-size: 0.74rem;
  }
}

/* ===== DOC PAGES (long-form readability) ===== */
.content--docs.content {
  padding: 2.75rem 2.25rem 5.5rem;
}

.doc-layout {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
  max-width: min(72rem, 100%);
  margin: 0 auto;
}

.doc-main.content-inner {
  max-width: var(--doc-max);
  flex: 1;
  min-width: 0;
}

.doc-toc {
  width: 15.5rem;
  flex-shrink: 0;
}

.doc-toc-sticky {
  position: sticky;
  top: calc(var(--header-h) + 1.25rem);
  max-height: calc(100vh - var(--header-h) - 2.5rem);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1rem 1rem 1.1rem;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  scrollbar-width: thin;
}

.doc-toc-title {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.65rem;
}

.doc-toc .toc {
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  font-size: 0.82rem;
  line-height: 1.45;
}

.doc-toc .toc ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.doc-toc .toc li {
  margin: 0.2rem 0;
}

.doc-toc .toc a {
  display: block;
  padding: 0.2rem 0.15rem;
  border-radius: var(--r-sm);
  color: var(--muted);
  text-decoration: none;
  transition: color 0.12s, background 0.12s;
}

.doc-toc .toc a:hover {
  color: var(--text);
  background: var(--glass-md);
  text-decoration: none;
}

.doc-toc .toc .toc {
  margin-top: 0.25rem;
  margin-left: 0.65rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--border);
}

.doc-markdown {
  font-size: 1.02rem;
  line-height: 1.72;
  color: var(--muted);
}

.doc-markdown > h1:first-child {
  margin-top: 0;
  margin-bottom: 1.25rem;
  font-size: clamp(1.65rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--text);
}

.doc-markdown h2 {
  margin: 2.85rem 0 1rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
  font-size: 1.28rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--text);
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

.doc-markdown h1 + h2 {
  margin-top: 1.35rem;
  padding-top: 0;
  border-top: none;
}

.doc-markdown h3 {
  margin: 2rem 0 0.65rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

.doc-markdown h4 {
  margin: 1.5rem 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

.doc-markdown p {
  margin: 0 0 1.1em;
  max-width: 68ch;
}

.doc-markdown ul,
.doc-markdown ol {
  margin: 0 0 1.35rem;
  padding-left: 1.35rem;
  max-width: 68ch;
}

.doc-markdown li {
  margin: 0.45rem 0;
}

.doc-markdown li > p {
  margin: 0.35rem 0;
  max-width: none;
}

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

.doc-markdown hr {
  margin: 2.5rem 0;
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-md), transparent);
}

.doc-markdown blockquote {
  margin: 1.5rem 0;
  padding: 0.85rem 1rem 0.85rem 1.1rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--accent-glow);
  font-size: 0.96em;
}

.doc-markdown blockquote p:last-child {
  margin-bottom: 0;
}

.doc-markdown img {
  max-width: 100%;
  height: auto;
  border-radius: var(--r);
  border: 1px solid var(--border);
}

.doc-markdown .table-wrap {
  margin: 1.75rem 0;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  background: var(--glass);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.doc-markdown .table-wrap table {
  margin: 0;
  font-size: 0.9rem;
}

.doc-markdown .table-wrap th,
.doc-markdown .table-wrap td {
  padding: 0.65rem 1rem;
  white-space: nowrap;
}

.doc-markdown .table-wrap td {
  white-space: normal;
  min-width: 8rem;
}

.doc-markdown .code-block {
  margin: 1.65rem 0;
  border-left: 3px solid var(--accent);
}

.doc-markdown :not(pre) > code {
  font-size: 0.86em;
  padding: 0.12em 0.4em;
}

.content--docs .doc-footer {
  margin-top: 4rem;
  padding-top: 2rem;
}

@media (max-width: 1100px) {
  .doc-layout {
    flex-direction: column;
    gap: 1.75rem;
  }

  .doc-toc {
    order: -1;
    width: 100%;
  }

  .doc-toc-sticky {
    position: static;
    max-height: min(40vh, 18rem);
  }
}

@media (max-width: 900px) {
  .content--docs.content {
    padding: 1.75rem 1.15rem 3.5rem;
  }
}