:root {
  --bg: #f4f3ef;
  --bg-elevated: #faf9f6;
  --surface: #fff;
  --surface-muted: #fcfcfb;
  --text: #222;
  --text-secondary: #444;
  --muted: #666;
  --faint: #888;
  --border: #e4e2da;
  --border-strong: #d8d6ce;
  --row: #eceae4;
  --link: #3d6ea8;
  --code-bg: #f0eeea;
  --ok: #1a6b2d;
  --warn: #b45309;
  --btn-bg: #faf9f6;
  --btn-hover: #f0eeea;
  --chip-sleep-bg: #f0f0f0;
  --chip-sleep-fg: #666;
  --chip-online-bg: #d4edda;
  --chip-online-fg: #155724;
  --banner-offline-bg: #fff8f0;
  --banner-offline-border: #f0d8b8;
  --banner-offline-fg: #7a4a12;
  --form-ok-bg: #edf7f0;
  --form-ok-border: #b8dfc4;
}

[data-theme="dark"] {
  --bg: #12141a;
  --bg-elevated: #1a1d26;
  --surface: #1e222c;
  --surface-muted: #232833;
  --text: #e8eaef;
  --text-secondary: #c8ccd6;
  --muted: #a0a6b4;
  --faint: #7a8190;
  --border: #2e3440;
  --border-strong: #3a4252;
  --row: #2a303c;
  --link: #7eb0e8;
  --code-bg: #2a303c;
  --ok: #8fd9a8;
  --warn: #e0a46a;
  --btn-bg: #232833;
  --btn-hover: #2a303c;
  --chip-sleep-bg: #2a303c;
  --chip-sleep-fg: #a0a6b4;
  --chip-online-bg: #1e3a28;
  --chip-online-fg: #8fd9a8;
  --banner-offline-bg: #2a2218;
  --banner-offline-border: #5a4030;
  --banner-offline-fg: #e0a46a;
  --form-ok-bg: #1a2a20;
  --form-ok-border: #2e4a38;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

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

.wrap {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 20px clamp(20px, 3vw, 48px) 56px;
}

main {
  width: 100%;
}

.site-header {
  margin-bottom: 28px;
}

.header-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: 14px;
}

.header-brand {
  min-width: 0;
  flex: 1;
}

.site-title {
  margin: 0 0 4px;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 52rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.site-nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--link);
  padding-bottom: 2px;
}

.site-nav a:hover {
  text-decoration: underline;
}

.site-nav a.active {
  color: var(--text);
  border-bottom: 2px solid var(--text);
}

.header-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.theme-toggle {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--btn-bg);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: inherit;
  line-height: 1.2;
}

.theme-toggle:hover {
  background: var(--btn-hover);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--chip-sleep-bg);
  color: var(--chip-sleep-fg);
  flex-shrink: 0;
  cursor: default;
  user-select: none;
}

.status-chip[data-state="online"] {
  background: var(--chip-online-bg);
  color: var(--chip-online-fg);
  border-color: var(--form-ok-border);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.7;
}

h2 {
  margin: 28px 0 10px;
  font-size: 1.15rem;
  color: var(--text-secondary);
}

h2:first-of-type {
  margin-top: 0;
}

p {
  margin: 0 0 14px;
  color: var(--text-secondary);
  max-width: 48rem;
}

.lead {
  font-size: 1.05rem;
  color: var(--text);
  max-width: 48rem;
  line-height: 1.6;
}

.about-copy {
  max-width: 48rem;
}

.about-copy p {
  max-width: none;
}

.btn {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 6px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  background: var(--link);
  color: #fff;
  border-color: var(--link);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background: var(--btn-hover);
}

.banner-offline {
  background: var(--banner-offline-bg);
  border: 1px solid var(--banner-offline-border);
  color: var(--banner-offline-fg);
  border-radius: 8px;
  padding: 12px 16px;
  margin: 0 0 20px;
  font-size: 0.9rem;
  max-width: 48rem;
}

.banner-offline strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.95rem;
  color: var(--warn);
}

.banner-offline p {
  margin: 0;
  color: inherit;
  max-width: none;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  margin: 16px 0;
  max-width: 40rem;
}

.card-muted {
  background: var(--bg-elevated);
}

.leaderboard-table {
  width: 100%;
  max-width: none;
  border-collapse: collapse;
  margin-top: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.leaderboard-table th,
.leaderboard-table td {
  border-bottom: 1px solid var(--row);
  padding: 10px 14px;
  text-align: left;
  font-size: 0.9rem;
}

.leaderboard-table th {
  background: var(--bg-elevated);
  font-weight: 600;
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.leaderboard-table tr:last-child td {
  border-bottom: none;
}

.leaderboard-table tr:nth-child(even) td {
  background: var(--surface-muted);
}

.leaderboard-table .rank {
  color: var(--faint);
  width: 3rem;
}

.leaderboard-table .elo {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.leaderboard-table .provisional {
  color: var(--muted);
  font-weight: 500;
  cursor: help;
  text-decoration: underline dotted;
  text-underline-offset: 3px;
}

.empty-state {
  color: var(--faint);
  font-size: 0.92rem;
  margin: 12px 0 8px;
  padding: 16px;
  background: var(--bg-elevated);
  border: 1px dashed var(--border-strong);
  border-radius: 8px;
  max-width: none;
}

.legend {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 10px 0 0;
  max-width: 48rem;
}

.legend code {
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 4px;
}

.snapshot-meta {
  font-size: 0.8rem;
  color: var(--faint);
  margin: 6px 0 0;
}

.section-actions {
  margin-top: 12px;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  margin: 24px 0;
}

.contact-email {
  font-size: 1.1rem;
  font-weight: 600;
}

.offline-panel h2 {
  margin-top: 0;
}

.form-row {
  margin: 0 0 14px;
}

.form-row label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 4px;
}

.form-row select,
.form-row input {
  width: 100%;
  max-width: 420px;
  font-size: 0.9rem;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background: var(--surface);
  font-family: inherit;
}

.field-hint,
.card-hint {
  font-size: 0.8rem;
  color: var(--faint);
  margin: 6px 0 0;
  max-width: 520px;
}

.card-heading {
  margin: 0 0 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.inscribe-panel {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.inscribe-panel summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.inscribe-panel[open] summary {
  margin-bottom: 12px;
}

.create-intro {
  max-width: 48rem;
}

.create-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 28px 40px;
  align-items: start;
}

.create-aside h2 {
  margin-top: 0;
}

.info-block {
  margin: 0 0 18px;
  max-width: 36rem;
}

.info-block h3 {
  margin: 0 0 6px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.info-block p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
  max-width: none;
}

@media (max-width: 900px) {
  .create-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.games-table th[data-sort] {
  user-select: none;
}

.games-table th[data-sort].is-sorted {
  color: var(--text);
}

.rating-explain {
  margin-top: 36px;
  max-width: 48rem;
}

.rating-explain p {
  max-width: none;
}

.create-form .btn {
  margin-top: 4px;
}

.form-message {
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.9rem;
  margin: 0 0 16px;
  max-width: 40rem;
}

.form-message-error {
  color: var(--warn);
  background: var(--banner-offline-bg);
  border: 1px solid var(--banner-offline-border);
}

.form-message-ok {
  color: var(--ok);
  background: var(--form-ok-bg);
  border: 1px solid var(--form-ok-border);
}

.brief-wrap {
  margin-top: 16px;
  max-width: 48rem;
}

.brief-wrap label {
  display: block;
  margin-bottom: 8px;
}

.brief-wrap textarea {
  width: 100%;
  box-sizing: border-box;
  min-height: 280px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.78rem;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-elevated);
  color: var(--text);
  margin-bottom: 10px;
}

.game-id-line {
  font-size: 0.95rem;
  margin: 8px 0 0;
}

.games-table code {
  font-size: 0.82em;
}

.btn-sm {
  font-size: 0.82rem;
  padding: 5px 10px;
}

.site-footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--faint);
}

.site-footer a {
  color: var(--muted);
}

@media (max-width: 720px) {
  .wrap {
    padding: 16px 18px 40px;
  }

  .header-top {
    flex-direction: column;
    align-items: stretch;
  }

  .header-controls {
    align-self: flex-start;
  }

  .status-chip {
    align-self: center;
  }

  .leaderboard-table th,
  .leaderboard-table td {
    padding: 8px 10px;
    font-size: 0.85rem;
  }
}