/* css/demo.css — chrome for the demo subsystem.
   Layered on top of globals.css + app.css + landing.css — depends on their
   CSS variables (--canvas, --canvas-2, --border, --accent, etc). */

/* ---------- Header ---------- */
.demo-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--canvas);
  border-bottom: 1px solid var(--border);
  backdrop-filter: saturate(1.2) blur(6px);
  -webkit-backdrop-filter: saturate(1.2) blur(6px);
}
.demo-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.demo-header__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  font-size: 16px;
}
.demo-header__logo .logo-mark {
  width: 22px; height: 22px; border-radius: 6px;
  background: linear-gradient(135deg, #6366F1, #0D9488);
}
.demo-header__project {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 16px;
  border-left: 1px solid var(--border);
  min-width: 0;
  flex: 1 1 auto;
}
.demo-badge {
  font-size: 11px; font-weight: 700; letter-spacing: 0.04em;
  padding: 3px 7px; border-radius: 4px;
  background: rgba(13,148,136,0.12);
  color: #0D9488;
  text-transform: uppercase;
}
.demo-header__name { font-weight: 600; color: var(--fg); }
.demo-header__path { color: var(--muted); font-family: var(--font-mono, monospace); font-size: 13px; }
.demo-header__back {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  margin-left: auto;
}
.demo-header__back:hover { color: var(--fg); }

.demo-chips {
  display: flex;
  gap: 6px;
}
.demo-chip {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  background: var(--canvas-2);
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.demo-chip:hover { color: var(--fg); }
.demo-chip--active {
  background: var(--fg);
  color: var(--canvas);
  border-color: var(--fg);
}
[data-theme="dark"] .demo-chip--active {
  background: #0D9488;
  color: #fff;
  border-color: #0D9488;
}

/* ---------- Main layout ---------- */
.demo-main {
  padding: 48px 0 120px;
  min-height: calc(100vh - 200px);
}
.demo-view-title {
  margin: 0 0 18px;
  font-size: 24px;
  font-weight: 700;
}

/* ---------- Task landing ---------- */
.demo-hero { text-align: center; padding: 24px 0 36px; }
.demo-hero h1 { margin: 0 0 8px; font-size: 40px; font-weight: 700; }
.demo-hero__path {
  font-family: var(--font-mono, monospace);
  font-size: 14px;
  margin: 0 0 16px;
}
.demo-hero .lang-pills {
  display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
}

.demo-trace-summary { padding: 24px; margin: 0 0 24px; }
.demo-trace-summary h3 { margin: 0 0 6px; font-size: 18px; }
.demo-trace-summary .meta {
  display: flex; gap: 8px; flex-wrap: wrap;
  color: var(--muted); font-size: 14px; margin-top: 10px;
}
.demo-label {
  background: var(--canvas-2);
  padding: 10px 12px; border-radius: 6px; border: 1px solid var(--border);
  overflow-x: auto;
  font-family: var(--font-mono, monospace);
  font-size: 13px;
  margin: 10px 0;
}

.demo-files { padding: 24px; }
.demo-files h3 { margin: 0 0 14px; font-size: 16px; }
.demo-files__list {
  list-style: none;
  padding: 0; margin: 0;
  max-height: 360px; overflow-y: auto;
}
.demo-files__list li {
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.demo-files__list li:last-child { border-bottom: none; }
.demo-files__list code { font-size: 13px; }

/* ---------- Narrate card ---------- */
.demo-narrate {
  margin: 24px 0;
  padding: 24px;
  border-left: 3px solid var(--accent, #0D9488);
}
.demo-narrate h3 {
  margin: 0 0 14px;
  display: flex; align-items: center; gap: 10px;
  font-size: 18px;
}
.demo-narrate__badge {
  font-size: 11px; font-weight: 700; letter-spacing: 0.04em;
  padding: 3px 7px; border-radius: 4px;
  background: rgba(99,102,241,0.12); color: #6366F1;
  text-transform: uppercase;
}
.demo-narrate__content {
  font-size: 16px; line-height: 1.65; margin: 0 0 14px;
  color: var(--fg);
}
.demo-narrate__meta {
  display: flex; gap: 16px; flex-wrap: wrap;
  font-size: 12px; color: var(--muted);
}
.demo-narrate__cached { color: #0D9488; font-weight: 600; }

.demo-narrate-wrap { margin-top: 24px; }

/* ---------- Explorer / Story canvases ---------- */
.demo-info {
  margin: 0 0 12px;
  font-size: 13px;
}
.demo-graph {
  width: 100%;
  height: 640px;
  background: var(--canvas-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.demo-story-mount {
  background: var(--canvas-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  min-height: 520px;
}

/* ---------- Persistent signup bar ---------- */
.demo-signup-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 30;
  background: var(--canvas);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
}
[data-theme="dark"] .demo-signup-bar {
  box-shadow: 0 -4px 20px rgba(0,0,0,0.35);
}
.demo-signup-bar__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.demo-signup-bar__msg {
  flex: 1 1 320px;
  font-size: 14px;
}
.demo-signup-bar__close {
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
}
.demo-signup-bar__close:hover { color: var(--fg); }

/* ---------- Gallery page ---------- */
.demo-gallery {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}
.demo-gallery__hero { text-align: center; margin-bottom: 48px; }
.demo-gallery__hero h1 { margin: 6px 0 10px; font-size: 40px; }
.demo-gallery__hero .muted { max-width: 600px; margin: 0 auto; }
.demo-gallery__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.demo-card {
  display: block;
  padding: 22px;
  background: var(--canvas-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--fg);
  text-decoration: none;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.demo-card:hover {
  transform: translateY(-2px);
  border-color: #0D9488;
  box-shadow: 0 6px 24px rgba(13,148,136,0.08);
}
.demo-card h3 { margin: 0 0 6px; font-size: 18px; }
.demo-card__path {
  font-family: var(--font-mono, monospace);
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 14px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.demo-card__stats {
  display: flex; gap: 16px; flex-wrap: wrap;
  font-size: 13px; color: var(--muted);
  margin: 0 0 12px;
}
.demo-card__stat strong { color: var(--fg); }
.demo-card__cta {
  color: #0D9488;
  font-weight: 600;
  font-size: 14px;
}
.demo-card__loading {
  padding: 32px 22px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.demo-card__error {
  padding: 32px 22px;
  text-align: center;
  color: var(--muted);
  background: rgba(234,179,8,0.06);
  border: 1px dashed rgba(234,179,8,0.4);
  border-radius: 10px;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .demo-header__inner { padding: 8px 16px; }
  .demo-header__project { padding-left: 0; border-left: 0; }
  .demo-header__path { display: none; }
  .demo-chips { width: 100%; order: 5; }
  .demo-chip { flex: 1 1 auto; text-align: center; }
  .demo-hero h1 { font-size: 28px; }
  .demo-graph { height: 460px; }
}