/**
 * XWUI demo · shared layout shell.
 *
 * Loaded by every per-framework demo so the chrome around the
 * canonical XWUI showcase looks identical regardless of which framework
 * is underneath. Every color/spacing/radius traces back to an XWUI
 * token · no hardcoded fills.
 *
 * The body of each demo composes XWUI Custom Elements only · these
 * rules just lay them out in the 9-section grid prescribed in SPEC.md.
 */

:root { color-scheme: light dark; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--xw-font-sans, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif);
  -webkit-font-smoothing: antialiased;
}

/* ---------- top header ---------- */
.demo-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem clamp(1rem, 3vw, 2rem);
  background: color-mix(in srgb, var(--bg-card) 92%, transparent);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
}
.demo-back { justify-self: start; }

.demo-built {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  justify-self: center;
}
.demo-logo {
  width: var(--xwui-size-lg, 40px);
  height: var(--xwui-size-lg, 40px);
  object-fit: contain;
  display: block;
}

.demo-style-cycler {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  justify-self: end;
}
.demo-style-name { min-width: 11rem; text-align: center; }

/* ---------- body container ---------- */
.demo-body {
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 3vw, 2rem) clamp(3rem, 6vw, 5rem);
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 4vw, 3rem);
}

/* ---------- hero ---------- */
.demo-section--hero {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.demo-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent-primary);
}
.demo-title {
  font-size: clamp(2.25rem, 4.5vw, 3.75rem);
  line-height: 1.05;
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.02em;
}
.demo-title-emoji { font-style: normal; margin-right: 0.5rem; }
.demo-title-accent {
  background: linear-gradient(
    120deg,
    var(--accent-primary),
    var(--accent-info, var(--accent-primary)) 65%,
    var(--accent-primary)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.demo-lede {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 60ch;
  margin: 0;
}
.demo-cta { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-top: 0.4rem; }

/* ---------- generic section header ---------- */
.demo-section { display: flex; flex-direction: column; gap: 0.85rem; }
.demo-section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
}
.demo-section-title {
  font-size: 1.05rem; font-weight: 700; color: var(--text-primary);
  letter-spacing: -0.01em; margin: 0;
}
.demo-section-meta { font-size: 0.85rem; color: var(--text-tertiary); }

/* ---------- KPI row ----------
 * `grid-auto-flow: dense` packs items into the next available cell that
 * fits, so when a row's last column is empty (item count not divisible
 * by column count) a later item slides into the gap instead of leaving
 * trailing white space.
 * `grid-auto-rows: min-content` sizes each row to its tallest card's
 * intrinsic height — no card stretches to fill an empty row, no wasted
 * vertical space. */
.demo-kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  grid-auto-flow: dense;
  grid-auto-rows: min-content;
  align-items: start;
  gap: 0.85rem;
}
.demo-kpi {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg, 14px);
  padding: 1rem 1.1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,0.06));
  min-width: 0;
  align-self: start;
}
.demo-kpi-label {
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-tertiary);
}
.demo-kpi-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.75rem;
}
.demo-kpi xwui-display-statistic { font-size: 1.5rem; }
.demo-kpi xwui-display-sparkline { display: block; width: 100%; }

/* ---------- charts row ----------
 * Same dense + min-content packing as the KPI row · charts size to
 * their natural height so we don't get a gigantic empty row when one
 * chart panel happens to be shorter than the others. */
.demo-charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  grid-auto-flow: dense;
  grid-auto-rows: min-content;
  align-items: start;
  gap: 0.85rem;
}
.demo-chart {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg, 14px);
  padding: 1rem 1rem 0.75rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  min-width: 0;
}
.demo-chart > xwui-chart-line,
.demo-chart > xwui-chart-area,
.demo-chart > xwui-chart-bar { display: block; min-height: 200px; }

/* ---------- inputs showcase ---------- */
.demo-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  grid-auto-flow: dense;
  grid-auto-rows: min-content;
  align-items: start;
  gap: 0.85rem;
}
.demo-input {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg, 14px);
  padding: 1rem 1.1rem;
  display: flex; flex-direction: column; gap: 0.6rem;
  min-width: 0;
  align-self: start;
}
.demo-input-bind {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.8rem; color: var(--text-secondary);
}
.demo-input-bind strong { color: var(--text-primary); }

/* ---------- scoped style region ---------- */
.demo-scoped {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg, 14px);
  padding: 1rem 1.1rem 1.2rem;
  display: flex; flex-direction: column; gap: 1rem;
}
.demo-scoped-controls {
  display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
}
.demo-scoped-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  grid-auto-flow: dense;
  grid-auto-rows: min-content;
  align-items: start;
  gap: 1rem;
}
.demo-scoped-panel {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg, 14px);
  padding: 1rem 1.1rem 1.2rem;
  display: flex; flex-direction: column; gap: 0.65rem;
  background: var(--bg-elevated, var(--bg-card));
}
.demo-scoped-panel-head {
  display: inline-flex; align-items: baseline; gap: 0.5rem;
  font-weight: 700; color: var(--text-primary);
}
.demo-scoped-panel-meta { font-size: 0.75rem; color: var(--text-tertiary); }

/* ---------- nav row ---------- */
.demo-nav { display: flex; flex-direction: column; gap: 0.75rem; }
.demo-nav xwui-nav-tabs { display: block; }

/* ---------- feedback row ---------- */
.demo-feedback { display: grid; grid-template-columns: 1fr; gap: 0.65rem; }
.demo-feedback xwui-feedback-alert,
.demo-feedback xwui-feedback-banner { display: block; }

/* ---------- footer ---------- */
.demo-footer {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  padding: 1rem 0 1.5rem;
}

/* ---------- small viewports ---------- */
@media (max-width: 720px) {
  .demo-header { grid-template-columns: 1fr; text-align: center; }
  .demo-back, .demo-built, .demo-style-cycler { justify-self: center; }
  .demo-style-name { min-width: 9rem; }
}