:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --link: #2563eb;
  --nav-bg: #ffffff;
  --toc-bg: #fafafa;
  --control-bg: #ffffff;
  --control-active-bg: #eef2ff;
  --control-active-border: #c7d2fe;
}

:root[data-theme="dark"] {
  --bg: #0a0f16;
  --surface: #121923;
  --text: #f3f4f6;
  --muted: #a8b0bd;
  --border: #2b3644;
  --link: #8db5ff;
  --nav-bg: #1a2431;
  --toc-bg: #18222e;
  --control-bg: #1a2431;
  --control-active-bg: #2d3d52;
  --control-active-border: #5b7dab;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  line-height: 1.55;
}

body.docs-home {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}

body.docs-home .page {
  width: min(900px, 100%);
  margin: 0;
}

.page {
  width: min(900px, 100% - 32px);
  margin: 28px auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.hero {
  margin-bottom: 10px;
}

.eyebrow {
  margin: 0 0 4px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.brand-mark {
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
}

.brand-logo {
  display: block;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.subtitle {
  margin: 0 0 6px;
  color: var(--muted);
}

h2 {
  margin: 22px 0 8px;
  font-size: 20px;
}

p,
li {
  color: var(--text);
}

small,
.meta {
  color: var(--muted);
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 16px;
}

.nav a {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  background: var(--nav-bg);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.lang-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.theme-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.lang-button,
.theme-button {
  border: 1px solid var(--border);
  background: var(--control-bg);
  color: var(--text);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 13px;
  line-height: 1.2;
  cursor: pointer;
}

.lang-button.active,
.theme-button.active {
  border-color: var(--control-active-border);
  background: var(--control-active-bg);
}

.toc {
  display: grid;
  gap: 6px;
  margin: 16px 0 20px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--toc-bg);
}

.toc a {
  color: var(--link);
}

.section {
  margin-top: 18px;
}

.section h2 {
  margin-top: 0;
}

.footer {
  margin-top: 24px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

@media (max-width: 640px) {
  body.docs-home {
    padding: 8px;
  }

  .page {
    width: min(900px, 100% - 16px);
    margin: 14px auto;
    padding: 14px;
    border-radius: 8px;
  }

  h1 {
    font-size: 23px;
  }

  h2 {
    font-size: 18px;
  }

  .lang-button,
  .theme-button {
    font-size: 12px;
    padding: 4px 7px;
  }
}