@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg: #F6F8FA;
  --surface: #FFFFFF;
  --border: #E2E8EF;
  --text: #101820;
  --text-dim: #4B5563;
  --text-faint: #8792A2;
  --accent: #0891B2;
  --accent-soft: rgba(8,145,178,0.08);
  --accent-border: rgba(8,145,178,0.28);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0A0E14;
    --surface: #111926;
    --border: #232D3D;
    --text: #E6EDF3;
    --text-dim: #8B98A8;
    --text-faint: #5C6774;
    --accent: #38BDF8;
    --accent-soft: rgba(56,189,248,0.10);
    --accent-border: rgba(56,189,248,0.30);
  }
}
:root[data-theme="dark"] {
  --bg: #0A0E14;
  --surface: #111926;
  --border: #232D3D;
  --text: #E6EDF3;
  --text-dim: #8B98A8;
  --text-faint: #5C6774;
  --accent: #38BDF8;
  --accent-soft: rgba(56,189,248,0.10);
  --accent-border: rgba(56,189,248,0.30);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }

a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}
@media (max-width: 560px) { .page { padding: 32px 18px 72px; } }

header.doc-head {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.brand-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  text-decoration: none;
}
.brand-mark { width: 16px; height: 16px; flex: none; }
h1 {
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1.2;
  margin: 0 0 10px;
  text-wrap: balance;
}
.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: var(--text-faint);
}

.intro { color: var(--text-dim); font-size: 15px; margin: 18px 0 0; max-width: 62ch; }

nav.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 40px;
}
nav.toc .toc-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 10px;
}
nav.toc ol {
  columns: 2;
  column-gap: 24px;
  margin: 0;
  padding: 0 0 0 1.1em;
  font-size: 14px;
}
@media (max-width: 480px) { nav.toc ol { columns: 1; } }
nav.toc li { margin-bottom: 6px; }
nav.toc a { color: var(--text); text-decoration: none; }
nav.toc a:hover { color: var(--accent); text-decoration: underline; }

section.article {
  margin-bottom: 34px;
  scroll-margin-top: 20px;
}
section.article h2 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 18px;
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
section.article h2 .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--accent);
  flex: none;
}
section.article p { margin: 0 0 12px; max-width: 66ch; color: var(--text); }
section.article p.dim { color: var(--text-dim); font-size: 14.5px; }
section.article ul { margin: 0 0 12px; padding-left: 1.2em; max-width: 62ch; }
section.article li { margin-bottom: 6px; }

.data-table {
  width: 100%;
  max-width: 640px;
  border-collapse: collapse;
  margin: 14px 0 18px;
  font-size: 14px;
}
.data-table th, .data-table td {
  text-align: left;
  padding: 9px 12px;
  border: 1px solid var(--border);
  vertical-align: top;
}
.data-table th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  background: var(--accent-soft);
}

.callout {
  border: 1px solid var(--accent-border);
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text-dim);
  max-width: 62ch;
}
.callout b { color: var(--text); }
.callout.warn {
  border-color: rgba(217,119,6,0.35);
  background: rgba(217,119,6,0.08);
}

.contact-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 420px;
}
.contact-card .role { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-faint); }
.contact-card .name { font-size: 16px; font-weight: 600; }
.contact-card .email { font-family: 'JetBrains Mono', monospace; font-size: 14px; }

footer.doc-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-faint);
}

/* Landing + reset-password pages */
.center-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px 20px;
}
.center-page .brand-mark { width: 40px; height: 40px; color: var(--accent); margin-bottom: 20px; }
.center-page h1 { font-size: clamp(22px, 5vw, 30px); }
.center-page p { color: var(--text-dim); max-width: 46ch; margin: 12px 0 0; }
.center-page .links { margin-top: 28px; display: flex; gap: 20px; flex-wrap: wrap; justify-content: center; font-family: 'JetBrains Mono', monospace; font-size: 13px; }