/* ============================================================
   Seedance 2 — shared design system
   Used by: index.html, schema.html, vocabulary.html,
            examples/index.html, examples/case_western_saloon.html
   ============================================================ */

:root {
  /* DARK THEME (default) */
  --bg:           #0e0d0b;
  --bg-soft:      #181410;
  --bg-card:      #1d1a16;
  --bg-deep:      #060503;
  --bg-deep-soft: #14110d;

  --line:         rgba(236, 230, 216, 0.06);
  --line-mid:     rgba(236, 230, 216, 0.14);
  --line-strong:  rgba(236, 230, 216, 0.30);

  --fg:           #ece6d8;
  --fg-soft:      #b8b0a0;
  --fg-faded:     #807868;
  --fg-on-dark:   #ece6d8;
  --fg-on-dark-soft: #807868;

  --accent:       #c8a464;
  --accent-hi:    #d8b878;
  --good:         #7fb069;
  --warn:         #d4a017;
  --bad:          #c75a3a;
  --purple:       #b08fc4;

  --bg-blur:      rgba(14, 13, 11, 0.78);
  --vis-tag-bg:   rgba(10, 9, 7, 0.72);
  --vis-tag-fg:   var(--accent);
  --row-hover:    rgba(236, 230, 216, 0.025);

  --bg-card-2: var(--bg-card);
  --bg-strong: var(--bg-soft);
  --line-soft: rgba(236, 230, 216, 0.04);
  --gold:      var(--accent);
}

:root[data-theme="light"] {
  --bg:           #efe9dc;
  --bg-soft:      #f7f3ea;
  --bg-card:      #ffffff;
  --bg-deep:      #15110e;
  --bg-deep-soft: #211c17;

  --line:         rgba(26, 22, 18, 0.08);
  --line-mid:     rgba(26, 22, 18, 0.18);
  --line-strong:  rgba(26, 22, 18, 0.40);

  --fg:           #1a1612;
  --fg-soft:      #5d544a;
  --fg-faded:     #8a8275;
  --fg-on-dark:   #f0eadc;
  --fg-on-dark-soft: #a39988;

  --accent:       #b88a3e;
  --accent-hi:    #c8a464;
  --good:         #4a7c4e;
  --warn:         #b8830e;
  --bad:          #a4441e;
  --purple:       #6d558a;

  --bg-blur:      rgba(239, 233, 220, 0.85);
  --vis-tag-bg:   rgba(255, 255, 255, 0.92);
  --vis-tag-fg:   var(--fg);
  --row-hover:    rgba(255, 255, 255, 0.4);

  --bg-card-2: var(--bg-card);
  --bg-strong: var(--bg-soft);
  --line-soft: rgba(26, 22, 18, 0.05);
  --gold:      var(--accent-hi);
}

html, body { transition: background-color 0.25s ease, color 0.25s ease; }
* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font-family: "Inter", -apple-system, system-ui, sans-serif;
  font-size: 15.5px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
}

/* Editorial display typography */
h1, h2, h3, h4 {
  font-family: "Cormorant Garamond", "Source Serif Pro", Georgia, serif;
  font-weight: 300;
  letter-spacing: -0.018em;
  color: var(--fg);
  margin: 0 0 0.45em;
}
h1 { font-size: 64px; line-height: 1.05; margin-top: 32px; }
h2 {
  font-size: 36px; line-height: 1.1; font-weight: 300;
  margin-top: 80px; padding-bottom: 0;
  border-bottom: none;
  letter-spacing: -0.02em;
}
h2::before {
  content: ""; display: block;
  width: 40px; height: 1px;
  background: var(--fg);
  margin-bottom: 20px;
}
h3 { font-size: 20px; margin-top: 24px; font-weight: 400; }
h4 {
  font-family: "Inter", sans-serif;
  font-size: 11.5px; font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--fg-faded);
  margin-top: 20px;
}

p { margin: 0.7em 0; color: var(--fg); font-weight: 400; }
.muted { color: var(--fg-soft); }
.faded { color: var(--fg-faded); }
a {
  color: var(--fg); text-decoration: none;
  border-bottom: 1px solid var(--line-mid);
  transition: border-color 0.2s;
}
a:hover { border-bottom-color: var(--fg); }
code, .mono {
  font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
  font-size: 13px; font-weight: 400;
}

/* TOP NAV */
.topnav {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg-blur);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  padding: 16px 40px;
  display: flex; gap: 0; align-items: center; flex-wrap: wrap;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.topnav a {
  color: var(--fg-faded); border-bottom: none;
  padding: 6px 14px 6px 0; margin-right: 6px;
  border-radius: 0; transition: color 0.2s;
}
.topnav a:hover { color: var(--fg); }
.topnav .here { color: var(--fg); }
.topnav .sep { color: var(--fg-faded); padding: 0; opacity: 0.4; }

/* THEME TOGGLE */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--line-mid);
  color: var(--fg-soft);
  padding: 6px 12px;
  font-family: "Inter", sans-serif;
  font-size: 10.5px; font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  display: inline-flex; align-items: center; gap: 8px;
}
.theme-toggle:hover { color: var(--fg); border-color: var(--fg); }
.theme-toggle .glyph {
  display: inline-block;
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 1px solid currentColor;
  background: radial-gradient(circle at 70% 50%, currentColor 0 50%, transparent 50%);
}
:root[data-theme="light"] .theme-toggle .glyph {
  background: linear-gradient(90deg, transparent 50%, currentColor 50%);
}
.theme-toggle .label::after { content: "Light"; }
:root[data-theme="light"] .theme-toggle .label::after { content: "Dark"; }

/* SECTION SUB-NAV (sticky) — prominent control panel */
.sectionnav {
  position: sticky; top: 50px; z-index: 9;
  background: var(--bg-deep);
  border-top: 1px solid var(--bg-deep);
  border-bottom: 1px solid var(--bg-deep);
  box-shadow: 0 1px 0 var(--line);
}
.sectionnav-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 0 40px;
  display: flex; gap: 0;
  overflow-x: auto; scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.sectionnav-inner::-webkit-scrollbar { display: none; }
.sectionnav a {
  flex-shrink: 0;
  padding: 18px 24px;
  margin: 0;
  font-size: 12.5px; font-weight: 500;
  color: var(--fg-on-dark-soft);
  background: transparent;
  border: none; border-bottom: 2px solid transparent;
  border-radius: 0;
  white-space: nowrap;
  display: inline-flex; align-items: baseline; gap: 10px;
  text-transform: uppercase; letter-spacing: 0.08em;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.sectionnav a .n {
  display: inline-block;
  width: auto; height: auto; background: none;
  color: var(--accent);
  font-size: 11px;
  text-align: left; line-height: 1;
  margin-right: 0;
  font-family: "JetBrains Mono", monospace;
  font-weight: 500;
  transition: color 0.2s;
  opacity: 0.7;
}
.sectionnav a:hover {
  color: var(--fg-on-dark);
  background: rgba(255,255,255,0.04);
  border-bottom-color: rgba(184, 138, 62, 0.4);
}
.sectionnav a:hover .n { opacity: 1; }
.sectionnav a.active {
  color: var(--fg-on-dark);
  background: rgba(184, 138, 62, 0.08);
  border-bottom-color: var(--accent);
}
.sectionnav a.active .n { color: var(--accent); opacity: 1; }
@media (max-width: 700px) {
  .sectionnav-inner { padding: 0 20px; }
  .sectionnav a { padding: 14px 18px; font-size: 11px; gap: 8px; }
  .sectionnav a .n { font-size: 10px; }
}

/* EYEBROW + LEDE + PILLS */
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.18em;
  font-size: 10.5px; font-weight: 500;
  color: var(--fg-faded);
  margin-bottom: 18px; padding-top: 40px;
}
.lede {
  font-family: "Cormorant Garamond", serif;
  font-weight: 300;
  font-size: 22px;
  line-height: 1.4;
  color: var(--fg-soft);
  max-width: 720px;
  letter-spacing: -0.005em;
  margin-top: 8px;
}
.status-row { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 24px; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; font-weight: 500;
  padding: 5px 10px;
  border-radius: 0;
  border: 1px solid var(--line-mid);
  color: var(--fg-soft);
  background: transparent;
}
.pill.gold { color: var(--accent); border-color: var(--accent); }
.pill.good { color: var(--good); border-color: var(--good); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 40px 80px; }

@media (max-width: 760px) {
  .wrap { padding: 0 24px 96px; }
  .topnav { padding: 14px 24px; }
  h1 { font-size: 42px; }
  h2 { font-size: 32px; margin-top: 80px; }
  h2::before { margin-bottom: 20px; }
  h3 { font-size: 19px; }
  .lede { font-size: 18px; }
}