/* Shared minimal frontend defaults. Components add layout, not a second theme. */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #ffffff;
  --soft: #f6f7f8;
  --text: #202124;
  --muted: #62676e;
  --line: #dfe2e5;
  --line-strong: #afb5bc;
  --link: #315d86;
  --success: #356b48;
  --failure: #9e4545;
  --warning: #83652d;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --radius: 3px;
  --page-width: 1280px;
  /* Existing pages can adopt the same tokens without a parallel palette. */
  --ink: var(--text);
  --paper: var(--bg);
  --panel: var(--surface);
  --accent: var(--link);
  --red: var(--failure);
  --green: var(--success);
  --line-dark: var(--line-strong);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.55 var(--sans); }
.ui-page { max-width: var(--page-width); margin: 0 auto; padding: 24px 24px 48px; }
.ui-page.wide-main { max-width: 1600px; }
h1, h2, h3, h4 { font-family: var(--sans); font-weight: 600; line-height: 1.4; letter-spacing: normal; }
h1 { margin: 0 0 12px; font-size: 24px; }
h2 { margin: 24px 0 12px; font-size: 18px; }
h3 { margin: 16px 0 8px; font-size: 15px; }
h4 { margin: 12px 0 8px; font-size: 14px; }
p { margin: 8px 0 16px; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
small, .muted { color: var(--muted); font-size: 12px; }
code, pre, kbd { font-family: var(--mono); font-size: 12px; }
code { overflow-wrap: anywhere; }
pre { margin: 12px 0; padding: 12px; overflow: auto; white-space: pre-wrap; background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); }
button, input, select, textarea { max-width: 100%; font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 7px 10px; }
button, select, summary { cursor: pointer; }
button:hover { background: var(--soft); }
button[aria-pressed="true"], .ui-button.active { background: var(--soft); border-color: var(--text); }
button:disabled, input:disabled, select:disabled { opacity: .55; cursor: default; }
input[type="checkbox"], input[type="radio"] { accent-color: var(--text); }
input[type="range"] { padding: 0; }
label { font-size: 13px; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; }
details > summary { padding: 4px 0; }
[hidden] { display: none !important; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--soft); color: var(--muted); font-weight: 600; }
tbody tr:hover { background: var(--soft); }
.ui-table-scroll { overflow-x: auto; }
.ui-table-scroll table { min-width: 600px; }
img, video { max-width: 100%; height: auto; filter: none; opacity: 1; }
video { display: block; background: #000; }
figure { margin: 0; }
figcaption { margin-top: 6px; color: var(--muted); font-size: 12px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 24px 0; }
.ui-toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin: 16px 0; }
.ui-toolbar label { display: flex; align-items: center; gap: 8px; }
.ui-nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; font-size: 13px; }
.ui-section { margin: 24px 0; }
.ui-panel { padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); }
.ui-status { font-size: 12px; }
.ui-status.success { color: var(--success); }
.ui-status.failure { color: var(--failure); }
.ui-status.warning { color: var(--warning); }
.ui-note { color: var(--muted); font-size: 13px; }
@media (max-width: 700px) {
  .ui-page { padding: 16px 12px 32px; }
  h1 { font-size: 21px; }
  .ui-toolbar { gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}