/* ========================================================================
   Vertigo Mixed S1 — Rulebook stylesheet
   ======================================================================== */

/* ---- Theme tokens ---- */
:root {
  --c-amber:   #f59e0b;
  --c-sky:     #0284c7;
  --c-emerald: #059669;
  --c-violet:  #7c3aed;
  --c-orange:  #ea580c;
  --c-rose:    #e11d48;
  --c-teal:    #0d9488;
  --vertigo:   #fbbf24;
}

:root, [data-theme="light"] {
  color-scheme: light;
  --bg:           #f4f4f7;
  --fg:           #1c1c20;
  --fg-muted:     #6c6c74;
  --panel-bg:     #ffffff;
  --panel-border: #e4e4ea;
  --row-alt:      #f8f8fb;
  --code-bg:      #f0f0f4;
  --shadow:       0 1px 2px rgba(0,0,0,0.04), 0 1px 4px rgba(0,0,0,0.06);
  --hash-tint:    rgba(251, 191, 36, 0.18);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg:           #0c0c10;
  --fg:           #ececf0;
  --fg-muted:     #8d8d97;
  --panel-bg:     #16161c;
  --panel-border: #2a2a32;
  --row-alt:      #1b1b22;
  --code-bg:      #1f1f27;
  --shadow:       0 1px 2px rgba(0,0,0,0.4), 0 2px 8px rgba(0,0,0,0.3);
  --hash-tint:    rgba(251, 191, 36, 0.16);
}

/* ---- Reset ---- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14.5px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--c-sky);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* ---- Header ---- */
.site-header {
  position: relative;
  text-align: center;
  padding: 1.4rem 1rem 0.8rem;
}

.logo {
  display: inline-block;
}
.logo img {
  display: block;
  max-width: 320px;
  width: min(60vw, 320px);
  height: auto;
  margin: 0 auto;
}

[data-theme="dark"] .logo-light  { display: none; }
[data-theme="light"] .logo-dark  { display: none; }

.version {
  margin: 0.45rem 0 0;
  font-size: 0.88rem;
  color: var(--fg-muted);
  letter-spacing: 0.01em;
}

.header-controls {
  position: absolute;
  top: 1rem; right: 1rem;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.time-toggle {
  display: inline-flex;
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  border-radius: 8px;
  overflow: hidden;
  height: 36px;
}
.time-toggle button {
  border: 0;
  background: transparent;
  color: var(--fg-muted);
  font: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  padding: 0 0.7rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.time-toggle button:hover { color: var(--fg); }
.time-toggle button.active {
  background: var(--vertigo);
  color: #1c1c20;
  font-weight: 600;
}
.time-toggle button + button {
  border-left: 1px solid var(--panel-border);
}

.theme-toggle {
  width: 36px; height: 36px;
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  color: var(--fg);
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}
.theme-toggle:hover { border-color: var(--vertigo); }
.theme-toggle:active { transform: scale(0.96); }
.theme-toggle .icon-sun  { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }

/* ---- Notice bar (leading tip from RST) ---- */
.notice-bar {
  max-width: 2000px;
  margin: 0 auto;
  padding: 0 1rem;
}
.notice-bar:empty { display: none; }
.notice-bar .admonition {
  margin: 0.2rem 0 0.75rem;
  padding: 0.45rem 0.75rem;
  font-size: 0.88em;
}

/* ---- Grid (masonry via CSS columns) ----
   Mobile-first: 1 → 2 → 3 columns. Capped at 3; columns stretch to
   fill the container at each breakpoint. */
.grid {
  column-count: 1;
  column-gap: 1rem;
  padding: 0.5rem 1rem 2rem;
  max-width: 2000px;
  margin: 0 auto;
}

@media (min-width: 720px) {
  .grid { column-count: 2; }
}

@media (min-width: 1100px) {
  .grid { column-count: 3; }
}

/* ---- Panel ---- */
.panel {
  break-inside: avoid;
  display: inline-block;
  width: 100%;
  margin: 0 0 1rem;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.panel-amber   { --accent: var(--c-amber);   --accent-fg: #1c1c20; }
.panel-sky     { --accent: var(--c-sky);     --accent-fg: #ffffff; }
.panel-emerald { --accent: var(--c-emerald); --accent-fg: #ffffff; }
.panel-violet  { --accent: var(--c-violet);  --accent-fg: #ffffff; }
.panel-orange  { --accent: var(--c-orange);  --accent-fg: #ffffff; }
.panel-rose    { --accent: var(--c-rose);    --accent-fg: #ffffff; }
.panel-teal    { --accent: var(--c-teal);    --accent-fg: #ffffff; }

.panel-header {
  background: var(--accent);
  color: var(--accent-fg);
  padding: 0.45rem 0.85rem;
}
.panel-header h2 {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
}
.panel-header h2:hover::after {
  content: " #";
  opacity: 0.55;
  font-weight: 400;
}

.panel-body {
  padding: 0.65rem 0.85rem 0.85rem;
}
.panel-body > :first-child { margin-top: 0; }
.panel-body > :last-child { margin-bottom: 0; }

/* ---- Content typography ---- */
.panel-body p {
  margin: 0 0 0.55rem;
}
.panel-body p:last-child { margin-bottom: 0; }

.panel-body section {
  margin: 0.75rem 0 0;
  scroll-margin-top: 0.5rem;
}
.panel-body section:first-of-type { margin-top: 0.4rem; }

.panel-body h2,
.panel-body h3,
.panel-body h4 {
  font-size: 0.95rem;
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
}
.panel-body h2:hover::after,
.panel-body h3:hover::after,
.panel-body h4:hover::after {
  content: " #";
  opacity: 0.55;
  font-weight: 400;
}

.panel-body strong { font-weight: 600; color: var(--fg); }
.panel-body em { font-style: italic; }

.panel-body ol, .panel-body ul {
  margin: 0.15rem 0 0.55rem;
  padding-left: 1.4rem;
}
.panel-body li { margin: 0.1rem 0; }

.panel-body code {
  background: var(--code-bg);
  padding: 0.05em 0.35em;
  border-radius: 4px;
  font-size: 0.92em;
}

/* ---- Tables ---- */
.panel-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.3rem 0 0.6rem;
  font-size: 0.9em;
}
.panel-body th, .panel-body td {
  text-align: left;
  vertical-align: top;
  padding: 0.32rem 0.5rem;
  border-top: 1px solid var(--panel-border);
}
.panel-body th p,
.panel-body td p {
  margin: 0;
}
.panel-body th p + p,
.panel-body td p + p {
  margin-top: 0.25rem;
}
.panel-body thead th {
  border-top: none;
  border-bottom: 2px solid var(--accent);
  font-weight: 600;
}
.panel-body tbody tr:nth-child(even) { background: var(--row-alt); }

/* ---- Admonitions ---- */
.admonition {
  margin: 0.5rem 0;
  padding: 0.45rem 0.65rem;
  border-radius: 6px;
  border-left: 3px solid var(--admon, var(--accent));
  background: var(--row-alt);
}
.admonition .admonition-title,
.admonition .first {
  margin: 0 0 0.15rem;
  font-size: 0.82em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--admon, var(--accent));
}
.admonition p { margin: 0; }
.admonition p + p { margin-top: 0.3rem; }
.admonition.note    { --admon: var(--c-sky); }
.admonition.tip     { --admon: var(--c-emerald); }
.admonition.warning { --admon: var(--c-orange); }
.admonition.danger  { --admon: var(--c-rose); }

/* ---- Time elements (set by timezone.js) ---- */
time.tz-time {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---- Hash-link highlight ---- */
.hash-flash {
  animation: hash-pulse 2.4s ease-out;
}
@keyframes hash-pulse {
  0% {
    box-shadow: 0 0 0 3px var(--vertigo), 0 0 24px 4px var(--vertigo);
    background-color: var(--hash-tint);
  }
  60% {
    background-color: var(--hash-tint);
  }
  100% {
    box-shadow: 0 0 0 0 transparent, 0 0 0 0 transparent;
    background-color: transparent;
  }
}
.panel.hash-flash { background-color: var(--panel-bg); }
.panel-body section.hash-flash {
  margin-left: -0.45rem;
  margin-right: -0.45rem;
  padding-left: 0.45rem;
  padding-right: 0.45rem;
  border-radius: 6px;
}

/* ---- Mobile ---- */
@media (max-width: 600px) {
  .grid {
    padding: 0.25rem 0.6rem 1.5rem;
  }
  .site-header { padding: 1rem 0.6rem 0.6rem; }
  .panel { margin-bottom: 0.6rem; }
  .header-controls { top: 0.6rem; right: 0.6rem; }
  body { font-size: 14px; }
}

@media print {
  body { background: white; color: black; }
  .header-controls { display: none; }
  .panel { break-inside: avoid; border: 1px solid #ccc; box-shadow: none; }
  .grid { column-count: 2; }
}