/* Functional styling only. Visual design is a separate later pass, so this
   sheet stays small and the markup carries the structure. */

:root {
  --fg: #16181d;
  --bg: #ffffff;
  --muted: #5c6370;
  --border: #d5d8de;
  --ok: #1a7f4b;
  --warn: #96650a;
  --bad: #b3261e;
  --surface: #f6f7f9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6e8ec;
    --bg: #16181d;
    --muted: #a2a8b4;
    --border: #343842;
    --ok: #52c98a;
    --warn: #e0b252;
    --bad: #f2837c;
    --surface: #1e2128;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 1rem 3rem;
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--fg);
  background: var(--bg);
}

[hidden] {
  display: none !important;
}

.app-header,
main {
  max-width: 68rem;
  margin: 0 auto;
}

.app-header {
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
  position: relative;
}

.app-header h1 {
  margin: 0;
  font-size: 1.5rem;
}

.subtitle {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

h2 {
  font-size: 1.2rem;
  margin-top: 0;
}

h3 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.field {
  margin-bottom: 1rem;
  border: 0;
  padding: 0;
}

.field label,
.field legend {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="password"],
input[type="file"] {
  width: 100%;
  max-width: 32rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}

.choice {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  font-weight: 400;
  margin-bottom: 0.5rem;
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0.3rem 0 0;
}

button,
.button {
  font: inherit;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--fg);
  color: var(--bg);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

button.secondary,
.link-button {
  background: transparent;
  color: var(--fg);
}

.link-button {
  position: absolute;
  top: 1.5rem;
  right: 0;
  border: 0;
  text-decoration: underline;
  padding: 0;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.error {
  color: var(--bad);
  font-weight: 600;
}

.verdict {
  font-weight: 600;
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
  border-left: 4px solid var(--muted);
  background: var(--surface);
}

.verdict.ok {
  border-left-color: var(--ok);
}
.verdict.warn {
  border-left-color: var(--warn);
}
.verdict.bad {
  border-left-color: var(--bad);
}

.warning-note {
  border-left: 4px solid var(--warn);
  background: var(--surface);
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
}

.summary {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
  margin: 1rem 0;
}

.summary dt {
  color: var(--muted);
}

.summary dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.layers {
  margin: 1rem 0;
}

.layer {
  margin: 0.25rem 0;
  padding-left: 0.6rem;
  border-left: 3px solid var(--muted);
  font-size: 0.9rem;
}

.layer-passed {
  border-left-color: var(--ok);
}
.layer-failed {
  border-left-color: var(--bad);
}
.layer-not_implemented {
  border-left-color: var(--warn);
  font-weight: 600;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
  display: block;
  overflow-x: auto;
}

caption {
  text-align: left;
  font-weight: 600;
  padding-bottom: 0.4rem;
}

th,
td {
  border: 1px solid var(--border);
  padding: 0.45rem 0.6rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface);
}

.row-fatal td:first-child {
  border-left: 3px solid var(--bad);
}

.row-warning td:first-child {
  border-left: 3px solid var(--warn);
}

code {
  background: var(--surface);
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
}