/*
 * design_system.css — The dev-only /design_system example page
 * Styles the page chrome only; every example renders the real partials with
 * their production CSS.
 */

.ds-body {
  background: var(--color-ivory);
}

.ds {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100dvh;
}

/* --- Nav rail --- */

.ds__nav {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100dvh;
  padding: var(--space-6) var(--space-5);
  border-right: var(--border-faint);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.ds__nav-brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.ds__nav-brand-text {
  font-family: var(--font-display);
  font-size: var(--text-app-section);
  letter-spacing: 0.06em;
  color: var(--color-ink);
}

.ds__nav-brand-sub {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: var(--text-app-label);
  color: var(--color-ink-muted);
}

.ds__nav-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.ds__nav-link {
  font-family: var(--font-body);
  font-size: var(--text-app-label);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-2);
  text-decoration: none;
}

.ds__nav-link:hover {
  color: var(--color-red);
}

/* --- Main column --- */

.ds__main {
  padding: var(--space-8);
  max-width: 880px;
}

.ds__intro-title {
  font-family: var(--font-display);
  font-size: var(--text-app-title);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink);
}

.ds__intro-lede {
  max-width: var(--max-prose);
  color: var(--color-ink-2);
  margin-top: var(--space-2);
}

.ds__section {
  margin-top: var(--space-12);
}

.ds__section-title {
  font-family: var(--font-display);
  font-size: var(--text-app-section);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink);
}

.ds__section-subtitle {
  color: var(--color-ink-muted);
  font-size: var(--text-app-label);
  margin-top: var(--space-1);
}

/* --- Spec card --- */

.ds__spec {
  margin-top: var(--space-6);
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--color-cream-card);
  overflow: hidden;
}

.ds__spec-preview {
  padding: var(--space-6);
  border-bottom: var(--border-faint);
}

.ds__spec-card {
  padding: var(--space-4) var(--space-6);
  background: var(--color-parch);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.ds__spec-label {
  font-family: var(--font-body);
  font-size: var(--text-micro);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.ds__spec-name {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 700;
  font-size: var(--text-app-card-title);
  color: var(--color-ink);
}

.ds__spec-path {
  font-family: monospace;
  font-size: var(--text-app-micro);
  color: var(--color-ink-2);
}

.ds__spec-notes {
  font-size: var(--text-app-label);
  color: var(--color-ink-2);
  margin-top: var(--space-2);
}

.ds__spec-locals {
  font-family: monospace;
  font-size: var(--text-app-micro);
  color: var(--color-ink-2);
  padding-left: var(--space-4);
}

/* --- Token examples --- */

.ds__palette {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.ds__swatch {
  width: 116px;
  height: 64px;
  border: var(--border-faint);
  border-radius: var(--radius-card);
  display: flex;
  align-items: flex-end;
  padding: var(--space-1) var(--space-2);
}

.ds__swatch-name {
  font-family: monospace;
  font-size: 10px;
  background: var(--color-ivory);
  color: var(--color-ink);
  padding: 1px 3px;
  border-radius: 2px;
}

.ds__swatch--ivory        { background: var(--color-ivory); }
.ds__swatch--parch        { background: var(--color-parch); }
.ds__swatch--parch-2      { background: var(--color-parch-2); }
.ds__swatch--cream-card   { background: var(--color-cream-card); }
.ds__swatch--ink          { background: var(--color-ink); }
.ds__swatch--ink-2        { background: var(--color-ink-2); }
.ds__swatch--ink-muted    { background: var(--color-ink-muted); }
.ds__swatch--red          { background: var(--color-red); }
.ds__swatch--red-2        { background: var(--color-red-2); }
.ds__swatch--amber        { background: var(--color-amber); }
.ds__swatch--amber-2      { background: var(--color-amber-2); }
.ds__swatch--electric     { background: var(--color-electric); }
.ds__swatch--electric-2   { background: var(--color-electric-2); }
.ds__swatch--mint         { background: var(--color-mint); }
.ds__swatch--dark-surface-2 { background: var(--color-dark-surface-2); }

.ds__spacing {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.ds__spacing-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.ds__spacing-name {
  font-family: monospace;
  font-size: var(--text-app-micro);
  color: var(--color-ink-2);
  width: 90px;
}

.ds__spacing-bar {
  height: 12px;
  background: var(--color-amber);
  border-radius: 2px;
}

.ds__spacing-bar--1  { width: var(--space-1); }
.ds__spacing-bar--2  { width: var(--space-2); }
.ds__spacing-bar--3  { width: var(--space-3); }
.ds__spacing-bar--4  { width: var(--space-4); }
.ds__spacing-bar--5  { width: var(--space-5); }
.ds__spacing-bar--6  { width: var(--space-6); }
.ds__spacing-bar--8  { width: var(--space-8); }
.ds__spacing-bar--10 { width: var(--space-10); }
.ds__spacing-bar--12 { width: var(--space-12); }
.ds__spacing-bar--16 { width: var(--space-16); }

.ds__border-row {
  display: flex;
  gap: var(--space-4);
}

.ds__border-sample {
  width: 96px;
  height: 64px;
  border-radius: var(--radius-card);
  background: var(--color-ivory);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-app-micro);
  color: var(--color-ink-2);
}

.ds__border-sample--brand  { border: var(--border-brand); }
.ds__border-sample--inner  { border: var(--border-inner); }
.ds__border-sample--subtle { border: var(--border-subtle); }
.ds__border-sample--faint  { border: var(--border-faint); }

.ds__motion-demo {
  width: 160px;
  padding: var(--space-3);
  text-align: center;
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--color-ivory);
  font-size: var(--text-app-label);
  transition: transform var(--duration-medium) var(--ease-spring),
              background var(--duration-fast) var(--ease-out);
}

.ds__motion-demo:hover,
.ds__motion-demo:focus {
  transform: translateY(-4px);
  background: var(--color-amber-light);
}

/* --- Typography examples --- */

.ds__type-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.ds__type-display {
  font-size: var(--text-app-title);
}

.ds__type-accent {
  font-size: var(--text-feature);
}

.ds__type-body {
  max-width: var(--max-prose);
  font-weight: 300;
}

/* --- Element examples --- */

.ds__button-row,
.ds__badge-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.ds__gradient-tile {
  width: 116px;
  height: 64px;
  border-radius: var(--radius-card);
  display: flex;
  align-items: flex-end;
  padding: var(--space-1) var(--space-2);
}

.ds__gradient-name {
  font-family: monospace;
  font-size: 10px;
  background: var(--color-ivory);
  color: var(--color-ink);
  padding: 1px 3px;
  border-radius: 2px;
}

/* --- Mobile --- */

@media (max-width: 700px) {
  .ds {
    grid-template-columns: 1fr;
  }

  .ds__nav {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: var(--border-faint);
  }
}