/* ==========================================================================
   LumiNote standalone-page chrome — the app's design language for the
   /changelog and /credits pages. Self-contained pages link this plus
   fonts.css + reset.css; page-specific styles stay inline in each page.
   Dark "RodeX Obsidian & Brushed Brass" world only (the app's default).
   ========================================================================== */

:root {
  --font-display: "Chakra Petch", sans-serif;
  --font-body: "Martel", serif;
  --font-sanskrit: "Yatra One", serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --gold: #d9b64a;
  --gold-deep: #b8952f;
  --amber: #d9a441;
  --red: #e8452c;
  --emerald: #10b981;

  --bg-base: #07090c;
  --panel-chassis: #0f1217;
  --panel-inner: #080a0e;
  --panel-border: #1f242d;
  --btn-bg: #15181f;
  --btn-border: #282e38;
  --dashed-line: rgba(217, 182, 74, 0.25);
  --card-shadow: 0 15px 35px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --ink-primary: #f5f2e9;
  --ink-dim: #8e9588;
  --ink-muted: #565d50;
}

html, body { height: 100%; }

body {
  margin: 0;
  padding: 0 clamp(0.75rem, 2.5vw, 2.5rem);
  background: var(--bg-base);
  background-image:
    radial-gradient(1000px 500px at 75% -10%, rgba(217, 182, 74, 0.12) 0%, transparent 60%),
    radial-gradient(800px 400px at 15% 95%, rgba(232, 69, 44, 0.06) 0%, transparent 55%),
    repeating-linear-gradient(0deg, transparent 0 24px, rgba(255, 255, 255, 0.015) 24px 25px),
    repeating-linear-gradient(90deg, transparent 0 24px, rgba(255, 255, 255, 0.015) 24px 25px);
  color: var(--ink-primary);
  font-family: var(--font-body);
  line-height: 1.65;
  display: flex;
  justify-content: center;
  padding: 1.5rem clamp(0.75rem, 2.5vw, 2.5rem) 2.5rem;
}

::selection { background: rgba(217, 182, 74, 0.35); color: var(--ink-primary); }

* { scrollbar-width: thin; scrollbar-color: rgba(217, 182, 74, 0.55) rgba(0, 0, 0, 0.25); }
*::-webkit-scrollbar { width: 6px; height: 6px; }
*::-webkit-scrollbar-track { background: rgba(0, 0, 0, 0.25); border-radius: 4px; }
*::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 4px; }
*::-webkit-scrollbar-thumb:hover { background: var(--amber); }

a { color: var(--gold); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--gold-deep); }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Left Sanskrit pillar — hidden where it cannot breathe. */
.st-pillar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  padding-top: 2rem;
  border-right: 1px dashed var(--dashed-line);
  z-index: 1;
}
.st-pillar-om {
  font-family: var(--font-sanskrit);
  font-size: 1.15rem;
  color: var(--gold);
  border: 1px solid var(--dashed-line);
  border-radius: 6px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
}
.st-pillar-text {
  font-family: var(--font-sanskrit);
  font-size: 0.95rem;
  writing-mode: vertical-rl;
  letter-spacing: 0.3em;
  color: var(--gold);
}
.st-pillar-year {
  margin-top: auto;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.3em;
  writing-mode: vertical-rl;
  color: var(--ink-muted);
}
@media (max-width: 1180px) {
  .st-pillar { display: none; }
}

.st-shell {
  width: 100%;
  max-width: none;
  margin-left: clamp(0px, 4vw, 56px);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0 2.5rem;
  /* body is a flex container with height:100% — without this the shell
     stretches to exactly one viewport, and the sticky header stops
     sticking as soon as the first entry scrolls past (flex-stretch
     sticky failure). Height must be the content's, not the body's. */
  align-self: flex-start;
}

/* Chassis header — same panel, border, radius, and shadow as the app. */
.st-chassis {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.6rem 1rem;
  background: var(--panel-chassis);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  margin-bottom: 1.25rem;
  /* Persistent header: sticks to the viewport edge while content scrolls
     underneath (opaque panel hides it). */
  position: sticky;
  top: 0;
  z-index: 10;
}
.st-brand { display: flex; align-items: center; gap: 0.7rem; }
.st-logo {
  width: 28px;
  height: 28px;
  filter: drop-shadow(0 2px 6px rgba(217, 182, 74, 0.25));
}
.st-brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.st-brand h1 em { color: var(--gold); font-style: normal; }
.st-fuse-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.12em;
  color: var(--amber);
  border: 1px solid rgba(217, 164, 65, 0.35);
  background: rgba(217, 164, 65, 0.08);
  padding: 0.14rem 0.45rem;
  border-radius: 3px;
  margin-left: 0.6rem;
  vertical-align: 2px;
}
.st-nav { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.st-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--ink-primary);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.45rem 0.8rem;
  border-radius: 5px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}
.st-btn:hover, .st-btn:focus-visible { background: #1e222a; border-color: var(--gold-deep); color: var(--gold); text-decoration: none; }

/* Main chassis panel — one panel, dashed dividers inside. */
.st-panel {
  background: var(--panel-chassis);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  padding: clamp(1rem, 3vw, 2rem);
}
.st-divider { border: 0; border-top: 1px dashed var(--dashed-line); margin: 2rem 0; }

.st-footer {
  margin-top: 1.5rem;
  padding: 0.35rem 1rem;
  border-top: 1px solid var(--panel-border);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--ink-dim);
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: space-between;
}
.st-footer a { color: var(--gold); text-decoration: none; }
.st-footer a:hover { color: var(--gold-deep); }

@media (max-width: 640px) {
  .st-chassis { padding: 0.6rem 0.75rem; }
  .st-panel { padding: 1rem 0.85rem; }
}