/* Shared layout for expanded VelinStyle demos (0.9+) */
.demo-crossnav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--velin-space-2);
  align-items: center;
  font-size: var(--velin-text-xs);
}
.demo-crossnav__label {
  color: var(--velin-color-text-muted);
  font-weight: var(--velin-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.demo-crossnav a {
  padding: 0.2rem 0.55rem;
  border-radius: var(--velin-radius-full, 999px);
  border: 1px solid var(--velin-color-border);
  text-decoration: none;
  color: var(--velin-color-text-muted);
  font-weight: var(--velin-weight-medium);
}
.demo-crossnav a:hover {
  border-color: var(--velin-color-primary);
  color: var(--velin-color-primary);
}
.demo-crossnav a[aria-current="page"] {
  background: var(--velin-color-primary-subtle);
  border-color: oklch(from var(--velin-color-primary) l c h / 0.35);
  color: var(--velin-color-primary);
}

.demo-layout {
  max-width: 80rem;
  margin: 0 auto;
  padding: var(--velin-space-8) var(--velin-space-4) var(--velin-space-12);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--velin-space-8);
}
@media (min-width: 60rem) {
  .demo-layout--toc {
    grid-template-columns: minmax(11rem, 14rem) minmax(0, 1fr);
    align-items: start;
  }
}
.demo-toc {
  position: sticky;
  top: calc(var(--demo-bar-offset, 4rem) + var(--velin-space-4));
  display: none;
  flex-direction: column;
  gap: var(--velin-space-1);
  font-size: var(--velin-text-sm);
  padding: var(--velin-space-4);
  background: var(--velin-color-surface-bright);
  border: 1px solid var(--velin-color-border);
  border-radius: var(--velin-radius-lg);
}
@media (min-width: 60rem) {
  .demo-layout--toc .demo-toc { display: flex; }
}
.demo-toc__title {
  margin: 0 0 var(--velin-space-2);
  font-size: var(--velin-text-xs);
  font-weight: var(--velin-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--velin-color-text-muted);
}
.demo-toc a {
  color: var(--velin-color-text-muted);
  text-decoration: none;
  padding: 0.25rem 0;
  border-inline-start: 2px solid transparent;
  padding-inline-start: var(--velin-space-2);
}
.demo-toc a:hover,
.demo-toc a[aria-current="true"] {
  color: var(--velin-color-primary);
  border-inline-start-color: var(--velin-color-primary);
}

/* Vertical rhythm inside TOC layout column */
.demo-layout > div {
  display: flex;
  flex-direction: column;
  gap: var(--velin-space-10);
}
.demo-layout > div > .demo-intro {
  margin-bottom: 0;
}
.demo-layout > div > .demo-footer {
  margin-top: 0;
}

.demo-intro {
  margin-bottom: var(--velin-space-6);
}
.demo-intro h1 {
  font-size: var(--velin-text-3xl);
  margin: 0 0 var(--velin-space-2);
}
.demo-intro__lead {
  margin: 0;
  color: var(--velin-color-text-muted);
  max-width: 60ch;
  line-height: 1.6;
}
.demo-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--velin-space-2);
  margin-top: var(--velin-space-4);
}
.demo-features .velin-badge {
  font-size: var(--velin-text-xs);
}

.demo-section {
  scroll-margin-top: calc(var(--demo-bar-offset, 4rem) + var(--velin-space-4));
}
.demo-section + .demo-section {
  margin-top: 0; /* gap on .demo-layout > div */
}
.demo-section .panel {
  background: var(--velin-color-surface-bright);
  border: 1px solid var(--velin-color-border);
  border-radius: var(--velin-radius-lg);
  padding: var(--velin-space-6);
}
.demo-section .panel + .panel {
  margin-top: var(--velin-space-4);
}
.demo-section h2 {
  font-size: var(--velin-text-lg);
  margin: 0 0 var(--velin-space-2);
}
.demo-section__desc {
  margin: 0 0 var(--velin-space-4);
  font-size: var(--velin-text-sm);
  color: var(--velin-color-text-muted);
  line-height: 1.55;
}
.demo-section__foot {
  margin-top: var(--velin-space-4);
  padding-top: var(--velin-space-3);
  border-top: 1px solid var(--velin-color-border);
  font-size: var(--velin-text-sm);
}
.demo-section__foot a {
  font-weight: var(--velin-weight-semibold);
}
.demo-hint {
  font-size: var(--velin-text-xs);
  color: var(--velin-color-text-muted);
  margin: 0 0 var(--velin-space-3);
}
.demo-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--velin-space-3);
  align-items: center;
}
.demo-stack {
  display: flex;
  flex-direction: column;
  gap: var(--velin-space-4);
}
.demo-motion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--velin-space-2);
}
.demo-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: var(--velin-space-4);
}
.demo-mini-card {
  padding: var(--velin-space-4);
  border: 1px solid var(--velin-color-border);
  border-radius: var(--velin-radius-md);
  background: var(--velin-color-surface);
}
.demo-mini-card h3 {
  margin: 0 0 var(--velin-space-2);
  font-size: var(--velin-text-base);
}

/* ── Shared demo chrome (header + demo switcher strip) ── */
.demo-chrome-promo {
  background: var(--velin-color-primary);
  color: var(--velin-color-on-primary, #fff);
  text-align: center;
  font-size: var(--velin-text-sm);
  font-weight: var(--velin-weight-medium);
  padding: var(--velin-space-2) var(--velin-space-4);
}
.demo-chrome-promo strong { font-weight: var(--velin-weight-bold); }

.demo-chrome-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--velin-color-surface-bright);
  border-bottom: 1px solid var(--velin-color-border);
  box-shadow: 0 1px 0 oklch(0% 0 0 / 0.04);
}
.demo-chrome-header--blur {
  background: oklch(from var(--velin-color-surface-bright) l c h / 0.92);
  backdrop-filter: blur(12px);
}
.demo-chrome-header__row {
  max-width: 80rem;
  margin: 0 auto;
  padding: var(--velin-space-3) var(--velin-space-4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--velin-space-3);
}
.demo-chrome-brand {
  display: inline-flex;
  gap: var(--velin-space-2);
  align-items: center;
  font-weight: var(--velin-weight-extrabold);
  font-size: var(--velin-text-lg);
  color: var(--velin-color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.demo-chrome-brand img { width: 1.65rem; height: 1.65rem; }
.demo-chrome-header__actions {
  display: flex;
  align-items: center;
  gap: var(--velin-space-2);
  flex-wrap: wrap;
}
.demo-chrome-strip {
  border-top: 1px solid var(--velin-color-border);
  background: var(--velin-color-surface);
  padding: var(--velin-space-2) var(--velin-space-4);
  overflow-x: auto;
}
.demo-chrome-strip__inner {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--velin-space-3);
  min-width: min-content;
}
.demo-chrome-strip .demo-crossnav { flex-wrap: nowrap; }
.demo-chrome-strip .demo-crossnav a { white-space: nowrap; }

.demo-page {
  max-width: 80rem;
  margin: 0 auto;
  padding: var(--velin-space-6) var(--velin-space-4) var(--velin-space-12);
}
.demo-page--wide { max-width: 88rem; }
.demo-hero-block {
  margin-bottom: var(--velin-space-8);
  padding: var(--velin-space-8) var(--velin-space-6);
  border-radius: var(--velin-radius-xl);
  border: 1px solid var(--velin-color-border);
  background: linear-gradient(145deg, var(--velin-color-primary-subtle) 0%, var(--velin-color-surface-bright) 60%);
}
.demo-hero-block h1 {
  margin: 0 0 var(--velin-space-3);
  font-size: clamp(var(--velin-text-2xl), 4vw, var(--velin-text-4xl));
  letter-spacing: var(--velin-tracking-tight);
  line-height: 1.15;
}
.demo-hero-block__lead {
  margin: 0 0 var(--velin-space-4);
  color: var(--velin-color-text-muted);
  font-size: var(--velin-text-lg);
  line-height: 1.55;
  max-width: 52ch;
}
.demo-surface {
  background: var(--velin-color-surface-bright);
  border: 1px solid var(--velin-color-border);
  border-radius: var(--velin-radius-lg);
  padding: var(--velin-space-5) var(--velin-space-6);
}
.demo-surface + .demo-surface { margin-top: var(--velin-space-4); }
.demo-surface h2 {
  margin: 0 0 var(--velin-space-3);
  font-size: var(--velin-text-lg);
}
.demo-surface h3 {
  margin: var(--velin-space-4) 0 var(--velin-space-2);
  font-size: var(--velin-text-base);
}
.demo-muted {
  margin: 0 0 var(--velin-space-3);
  font-size: var(--velin-text-sm);
  color: var(--velin-color-text-muted);
  line-height: 1.55;
}
.demo-footer {
  margin-top: var(--velin-space-10);
  padding-top: var(--velin-space-6);
  border-top: 1px solid var(--velin-color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--velin-space-4);
  justify-content: space-between;
  font-size: var(--velin-text-sm);
  color: var(--velin-color-text-muted);
}
.demo-footer a { color: var(--velin-color-primary); font-weight: var(--velin-weight-semibold); }

/* velin-accordion — panel + summary (light DOM; works with shadow ::slotted) */
velin-accordion {
  display: block;
  margin-block: var(--velin-space-2);
  background: var(--velin-color-surface-bright);
}
velin-accordion details {
  border-bottom: 1px solid var(--velin-color-border);
}
velin-accordion details:last-child {
  border-bottom: none;
}
velin-accordion details > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--velin-space-3);
  padding: var(--velin-space-4) var(--velin-space-5);
  min-block-size: 2.75rem;
  font-size: var(--velin-text-base);
  font-weight: var(--velin-weight-semibold);
  color: var(--velin-color-text);
  cursor: pointer;
  list-style: none;
  transition: background 0.15s ease, color 0.15s ease;
}
velin-accordion details > summary::-webkit-details-marker {
  display: none;
}
velin-accordion details > summary::after {
  content: "";
  flex-shrink: 0;
  inline-size: 0.45rem;
  block-size: 0.45rem;
  border-inline-end: 2px solid currentColor;
  border-block-end: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
  opacity: 0.7;
}
velin-accordion details[open] > summary {
  background: var(--velin-color-primary-subtle);
  color: var(--velin-color-primary);
}
velin-accordion details[open] > summary::after {
  transform: rotate(-135deg);
}
velin-accordion details > :not(summary) {
  padding: var(--velin-space-4) var(--velin-space-5) var(--velin-space-5);
  background: var(--velin-color-bg-subtle);
  color: var(--velin-color-text-muted);
  font-size: var(--velin-text-sm);
  line-height: 1.6;
  border-block-start: 1px solid var(--velin-color-border);
}
velin-accordion details > :not(summary) p {
  margin: 0;
}

/* Dashboard blocks — consistent section gaps */
.dash-main {
  display: flex;
  flex-direction: column;
  gap: var(--velin-space-8);
}
.dash-main > .demo-footer {
  margin-top: var(--velin-space-4);
}