/* ===========================================================================
   RE-MOCT shared stylesheet
   Single source of truth for index.html, docs/RE-MOCT-doc.html, and
   docs/reading-iheartradio-metadata.html. Edit here once; all pages update.
   Placed at web repo root; linked as <link rel="stylesheet" href="/style.css">.

   Identity: violet accent on blue-black, matching RE-MOCT's Awesome-mode
   terminal palette. IBM Plex Mono for display/headers, Inter for body.
   =========================================================================== */

  :root {
    --bg:        #0e0e16;   /* blue-black, matches Awesome mode */
    --surface:   #161622;
    --bg-code:   #12121c;
    --border:    #262636;
    --accent:    #b98cff;   /* violet - primary accent */
    --accent2:   #3a2d5c;   /* deep violet for filled buttons/tags */
    --cyan:      #6bd4e0;   /* secondary accent / links in prose */
    --music:     #8fce6b;   /* the song_spot music signal */
    --ad:        #e0b062;   /* the song_spot ad signal / warnings */
    --dim:       #4a4a5e;
    --muted:     #8b8ba3;
    --text:      #d8d8e8;
    --bright:    #f0f0f8;
    --warn:      #e0b062;
    --danger:    #c0392b;
    --mono:      'IBM Plex Mono', 'JetBrains Mono', 'Fira Code', monospace;
    --sans:      'Inter', 'Segoe UI', system-ui, sans-serif;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 14px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }

  ::selection { background: rgba(185,140,255,0.28); color: #fff; }

  /* ── Layout (docs sidebar) ── */
  .layout { display: flex; min-height: 100vh; }

  nav {
    width: 220px;
    flex-shrink: 0;
    background: var(--surface);
    border-right: 1px solid var(--border);
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 24px 0 48px;
  }

  nav .logo {
    font-family: var(--mono);
    font-size: 15px;
    font-weight: 600;
    color: var(--accent);
    padding: 0 20px 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
    letter-spacing: 0.08em;
  }
  nav .logo span { color: var(--muted); font-size: 11px; display: block; margin-top: 2px; letter-spacing: 0; }

  nav a {
    display: block;
    padding: 6px 20px;
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.15s;
  }
  nav a:hover { color: var(--accent); }
  nav .nav-section {
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dim);
    padding: 16px 20px 4px;
  }

  main {
    flex: 1;
    max-width: 860px;
    padding: 48px 48px 96px;
  }

  /* ── Typography ── */
  h1 {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 28px;
    color: var(--accent);
    letter-spacing: 0.02em;
    margin-bottom: 8px;
  }
  h1 .version {
    font-size: 13px;
    color: var(--muted);
    margin-left: 12px;
    letter-spacing: 0;
    font-weight: 400;
  }

  h2 {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 16px;
    color: var(--bright);
    margin: 48px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    letter-spacing: 0.02em;
  }

  h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 28px 0 10px;
  }

  p { margin-bottom: 12px; color: var(--text); }

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

  strong { color: var(--bright); }

  /* ── Hero terminal (shared by index + doc) ── */
  .hero {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    padding: 20px 24px;
    margin-bottom: 32px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--muted);
    line-height: 1.6;
    overflow: hidden;
    white-space: nowrap;
  }
  .hero-line {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    overflow: hidden;
  }
  .hero-line .left  { flex-shrink: 0; }
  .hero-line .right { color: var(--bright); font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .hero .hl  { color: var(--accent); }
  .hero .hi  { color: var(--bright); }
  .hero .dim { color: var(--dim); }
  .hero .sep { display: block; height: 4px; }

  .tag {
    display: inline-block;
    background: var(--accent2);
    color: var(--accent);
    font-family: var(--mono);
    font-size: 10px;
    padding: 2px 7px;
    border-radius: 3px;
    letter-spacing: 0.06em;
    vertical-align: middle;
  }

  .badge-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
  .badge {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--muted);
    font-family: var(--mono);
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 3px;
  }
  .badge b { color: var(--bright); }

  /* ── Key binding tables ── */
  .kb-section { margin-bottom: 8px; }

  .kb-group {
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 20px 0 6px;
    font-weight: 600;
  }

  .kb {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
  }
  .kb-row { display: contents; }
  .kb-row:nth-child(even) .kb-key,
  .kb-row:nth-child(even) .kb-desc {
    background: #12121c;
  }
  .kb-key {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--bright);
    padding: 6px 12px;
    border-right: 1px solid var(--border);
    white-space: nowrap;
  }
  .kb-desc {
    font-size: 12px;
    color: var(--text);
    padding: 6px 12px;
  }

  /* ── Feature cards ── */
  .card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
    margin-top: 12px;
  }
  .card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 14px 16px;
  }
  .card-title {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent);
    margin-bottom: 6px;
  }
  .card p { font-size: 12px; color: var(--text); margin: 0; }

  /* ── Format pills ── */
  .format-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
  .fmt {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--bright);
    background: var(--bg-code);
    border: 1px solid var(--border);
    padding: 2px 8px;
    border-radius: 3px;
  }
  .fmt.theme { color: var(--accent); }

  /* ── Notes / warnings ── */
  .note {
    background: rgba(185,140,255,0.06);
    border-left: 3px solid var(--accent);
    padding: 10px 14px;
    font-size: 12px;
    color: var(--text);
    margin: 12px 0;
    border-radius: 0 3px 3px 0;
  }
  .warn {
    background: rgba(224,176,98,0.07);
    border-left: 3px solid var(--warn);
    padding: 10px 14px;
    font-size: 12px;
    color: var(--text);
    margin: 12px 0;
    border-radius: 0 3px 3px 0;
  }

  code {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--cyan);
    background: var(--bg-code);
    border: 1px solid var(--border);
    padding: 1px 5px;
    border-radius: 3px;
  }

  pre {
    font-family: var(--mono);
    font-size: 12px;
    background: var(--bg-code);
    border: 1px solid var(--border);
    border-left: 2px solid var(--accent);
    padding: 16px;
    border-radius: 4px;
    overflow-x: auto;
    color: var(--text);
    margin: 12px 0;
    line-height: 1.6;
  }
  pre code { background: none; border: none; padding: 0; color: var(--text); }

  .section-anchor { scroll-margin-top: 24px; }

  hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 40px 0;
  }

/* ===========================================================================
   Landing-page components (top nav bar, hero terminal, CTA buttons,
   two-mode split panels). Harmless/unused on the docs page.
   =========================================================================== */

  .bar {
    max-width: 940px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
  }
  .bar .brand {
    font-family: var(--mono);
    font-size: 15px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.08em;
    margin-right: auto;
    text-decoration: none;
  }
  .bar .brand .v { color: var(--muted); font-size: 11px; letter-spacing: 0; margin-left: 8px; }
  .bar a.nav {
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.15s;
  }
  .bar a.nav:hover { color: var(--accent); }

  .wrap { max-width: 940px; margin: 0 auto; padding: 56px 24px 96px; }
  section { scroll-margin-top: 72px; }

  /* landing h1 is larger than the docs h1 */
  .wrap > h1 {
    font-size: 34px;
  }

  .tagline {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
  }

  .lede { font-size: 15px; max-width: 68ch; }

  .caret {
    display: inline-block;
    width: 7px;
    height: 12px;
    background: var(--accent);
    vertical-align: -1px;
    animation: blink 1.1s steps(1) infinite;
  }
  @keyframes blink { 0%,49% { opacity: 1; } 50%,100% { opacity: 0; } }
  @media (prefers-reduced-motion: reduce) { .caret { animation: none; } }

  /* ── CTA ── */
  .cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 24px 0 8px; }
  .btn {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    padding: 9px 18px;
    border-radius: 3px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    text-decoration: none;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
  }
  .btn:hover { text-decoration: none; border-color: var(--accent); color: var(--accent); }
  .btn.primary {
    background: var(--accent2);
    border-color: var(--accent2);
    color: var(--accent);
  }
  .btn.primary:hover { background: #4a3a70; border-color: var(--accent); }
  .cta-note { font-size: 11px; color: var(--dim); font-family: var(--mono); margin-top: 4px; }

  .split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 12px;
  }
  @media (max-width: 720px) { .split { grid-template-columns: 1fr; } }
  .panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 18px 20px;
  }
  .panel.left-accent  { border-left: 3px solid var(--muted); }
  .panel.left-accent2 { border-left: 3px solid var(--accent); }
  .panel h4 {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--bright);
    margin-bottom: 4px;
    letter-spacing: 0.02em;
  }
  .panel .sub { font-family: var(--mono); font-size: 10px; color: var(--dim); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 10px; }
  .panel p { font-size: 12px; color: var(--muted); margin: 0; }

/* ===========================================================================
   Article page (reading-iheartradio-metadata.html) — the metadata writeup,
   now driven by the shared sheet. These classes are article-only.
   =========================================================================== */

  .article { max-width: 760px; margin: 0 auto; padding: 0 24px 120px; }

  .article header {
    border-bottom: 1px solid var(--border);
    padding: 56px 0 40px;
    margin-bottom: 8px;
  }

  .eyebrow {
    font-family: var(--mono);
    font-size: 12.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0 0 22px;
  }
  .eyebrow::before { content: "> "; color: var(--muted); }

  .article h1 {
    font-family: var(--mono);
    font-weight: 600;
    font-size: clamp(28px, 5vw, 40px);
    line-height: 1.18;
    letter-spacing: -0.01em;
    margin: 0 0 20px;
    color: var(--bright);
  }

  .article .lede {
    font-size: 18.5px;
    color: var(--muted);
    margin: 0;
    max-width: 62ch;
  }

  /* signature: the music/ad segment strip */
  .strip-block { margin: 40px 0 8px; }
  .strip-label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
  }
  .strip {
    display: flex;
    gap: 3px;
    height: 44px;
    align-items: flex-end;
  }
  .seg {
    flex: 1;
    border-radius: 2px 2px 0 0;
    opacity: 0;
    transform: scaleY(0.35);
    transform-origin: bottom;
    animation: rise 0.5s cubic-bezier(.2,.7,.3,1) forwards;
  }
  .seg.m { background: var(--music); }
  .seg.a { background: var(--ad); }
  @keyframes rise { to { opacity: 1; transform: scaleY(1); } }
  @media (prefers-reduced-motion: reduce) {
    .seg { animation: none; opacity: 1; transform: none; }
  }
  .strip-legend {
    display: flex;
    gap: 20px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--muted);
    margin-top: 12px;
  }
  .strip-legend span { display: inline-flex; align-items: center; gap: 7px; }
  .dot { width: 9px; height: 9px; border-radius: 2px; display: inline-block; }
  .dot.m { background: var(--music); }
  .dot.a { background: var(--ad); }

  .article main { margin-top: 48px; }

  .article h2 {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 21px;
    letter-spacing: -0.005em;
    color: var(--bright);
    margin: 52px 0 4px;
    padding: 8px 0 0;
    border-bottom: none;
  }
  .article h2 .n { color: var(--accent); margin-right: 12px; font-weight: 500; }

  .article p { margin: 18px 0; font-size: 17px; line-height: 1.7; }

  .article ol, .article ul { padding-left: 22px; margin: 18px 0; }
  .article li { margin: 12px 0; padding-left: 4px; font-size: 17px; line-height: 1.7; }
  .article li::marker { color: var(--accent); font-family: var(--mono); font-size: 14px; }

  .article pre { font-size: 13.5px; line-height: 1.65; padding: 18px 20px; }
  .article pre.url code { color: var(--cyan); }

  .tok-c  { color: var(--muted); font-style: italic; }
  .tok-k  { color: var(--accent); }
  .tok-s  { color: var(--music); }
  .tok-f  { color: var(--cyan); }

  .article .note-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 18px 22px;
    margin: 28px 0;
  }
  .article .note-box .tag-label {
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ad);
    display: block;
    margin-bottom: 8px;
  }
  .article .note-box p { margin: 8px 0; font-size: 15.5px; }

  .article footer {
    margin-top: 72px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 15px;
  }
  .article footer a { color: var(--accent); }