/* ============================================================
   BLAU — Documentation Chrome
   Styles specific to the design system documentation page (index.html).
   All .ds-* classes live here.

   Component styles (tokens, classes being documented) always
   come from styles/global.css — never duplicated here.

   Requires: styles/variables.css, styles/global.css

   TABLE OF CONTENTS
   1.  Page chrome       — .ds-main, .ds-page-header, sections
   2.  Color swatches    — .ds-token-grid, .ds-swatch-*
   3.  Demo boxes        — .ds-demo, .ds-demo-preview, .ds-demo-meta
   4.  Spacing bars      — .ds-spacing-row
   5.  Typography scale  — .ds-type-row
   6.  Atomic design     — .ds-atomic-layer
   7.  Motion demos      — .ds-motion-*
   8.  Accessibility     — .ds-a11y-*
   9.  Sidebar chrome    — .ds-sidebar-top, .ds-sidebar-back, .ds-version
   10. Mobile header/nav — .ds-mob-header, .ds-mob-burger, .ds-mob-nav
   11. Footer            — .ds-footer
   12. Shared label tag  — .label-tag
   13. Responsive
   ============================================================ */


/* ── 1. PAGE CHROME ──────────────────────────────────────── */

.ds-main {
  margin-left: var(--sw);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ds-page-header {
  width: 100%;
  max-width: 960px;
  padding: 5rem 5rem 3rem;
  border-bottom: 1px solid var(--border);
}

.ds-page-tag {
  display: inline-block;
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--blue-tint);
  color: var(--blue);
  padding: .18rem .5rem;
  border-radius: 3px;
  margin-bottom: .85rem;
}

.ds-page-title {
  font-family: var(--font-title);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: .85rem;
}

.ds-page-desc {
  font-size: .88rem;
  color: var(--mid);
  line-height: 1.8;
  max-width: 560px;
}

.ds-page-desc code {
  font-size: .8rem;
  background: var(--bg-subtle);
  padding: .1rem .35rem;
  border-radius: 3px;
  font-family: monospace;
}

.ds-section {
  width: 100%;
  max-width: 960px;
  padding: 3.5rem 5rem;
  border-bottom: 1px solid var(--border);
}

.ds-section:last-of-type { border-bottom: none; }

.ds-section-title {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: .35rem;
}

.ds-section-desc {
  font-size: .82rem;
  color: var(--mid);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 540px;
}

.ds-section-desc code {
  font-size: .78rem;
  background: var(--bg-subtle);
  padding: .1rem .3rem;
  border-radius: 3px;
  font-family: monospace;
}

.ds-subsection { margin-top: 2rem; }

.ds-subsection-title {
  font-size: .63rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--light);
  font-family: var(--font);
  margin-bottom: 1rem;
}


/* ── 2. COLOR SWATCHES ───────────────────────────────────── */

.ds-token-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: .65rem;
}

.ds-swatch {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.ds-swatch-color  { height: 46px; }

.ds-swatch-label  { padding: .45rem .6rem; background: var(--bg); }

.ds-swatch-name   { font-size: .7rem; font-weight: 600; color: var(--text); display: block; }

.ds-swatch-var    {
  font-size: .6rem;
  color: var(--light);
  display: block;
  margin-top: .1rem;
  font-family: monospace;
}

.ds-swatch-hex    { font-size: .6rem; color: var(--mid); display: block; font-family: monospace; }


/* ── 3. DEMO BOXES ───────────────────────────────────────── */

.ds-demo {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
}

.ds-demo:last-child { margin-bottom: 0; }

.ds-demo-preview {
  padding: 2.5rem 2rem;
  background: var(--bg);
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  flex: 1;
}

.ds-demo-preview--col   { flex-direction: column; align-items: flex-start; }
.ds-demo-preview--full  { background: var(--bg); }

.ds-demo-meta {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  padding: .7rem 1.25rem;
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: .5rem;
}

.ds-demo-name  { font-size: .75rem; font-weight: 600; color: var(--text); margin-bottom: .15rem; }
.ds-demo-desc  { font-size: .7rem; color: var(--mid); line-height: 1.6; }

.ds-class-tag {
  display: inline-block;
  font-size: .6rem;
  font-family: monospace;
  background: var(--border);
  color: var(--mid);
  padding: .12rem .4rem;
  border-radius: 3px;
  white-space: nowrap;
}

.ds-tags { display: flex; flex-wrap: wrap; gap: .3rem; flex-shrink: 0; }

.ds-ic {
  font-size: .75rem;
  background: var(--bg-subtle);
  padding: .1rem .3rem;
  border-radius: 3px;
  font-family: monospace;
  color: var(--mid);
}

.ds-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: stretch;
}

.ds-two-col > .ds-demo { height: 100%; }


/* ── 4. SPACING BARS ─────────────────────────────────────── */

.ds-spacing-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .55rem 0;
  border-bottom: 1px solid var(--border);
}

.ds-spacing-row:last-child { border-bottom: none; }

.ds-spacing-bar {
  background: rgba(0, 113, 197, .1);
  border: 1px solid rgba(0, 113, 197, .22);
  border-radius: 2px;
  height: 14px;
  flex-shrink: 0;
}

.ds-spacing-label { font-size: .73rem; font-weight: 600; color: var(--text); min-width: 130px; }
.ds-spacing-value { font-size: .68rem; color: var(--light); font-family: monospace; }


/* ── 5. TYPOGRAPHY SCALE ─────────────────────────────────── */

.ds-type-scale { display: flex; flex-direction: column; }

.ds-type-row {
  display: grid;
  grid-template-columns: 220px 1fr 100px;
  align-items: center;
  gap: 1.5rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
}

.ds-type-row:last-child { border-bottom: none; }

.ds-type-meta  { display: flex; flex-direction: column; gap: .2rem; }
.ds-type-token { font-size: .6rem; color: var(--blue); font-family: monospace; }
.ds-type-spec  { font-size: .6rem; color: var(--light); line-height: 1.5; }
.ds-type-ratio { font-size: .6rem; color: var(--mid); font-family: monospace; text-align: right; }


/* ── 6. ATOMIC DESIGN ────────────────────────────────────── */

.ds-atomic-layer {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.ds-atomic-layer:last-child { margin-bottom: 0; }

.ds-atomic-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .85rem 1.25rem;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.ds-atomic-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: .6rem;
  font-weight: 700;
  flex-shrink: 0;
}

.ds-atomic-title { font-size: .8rem; font-weight: 600; color: var(--text); }
.ds-atomic-desc  { font-size: .7rem; color: var(--mid); margin-left: auto; }

.ds-atomic-body {
  padding: 1.1rem 1.5rem;
  background: var(--bg);
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  align-items: center;
}

.ds-atom-chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .68rem;
  color: var(--mid);
  padding: .28rem .65rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--bg);
}

.ds-atom-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }


/* ── 7. MOTION DEMOS ─────────────────────────────────────── */

.ds-motion-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.ds-motion-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.ds-motion-stage {
  min-height: 160px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.ds-motion-trigger {
  position: absolute;
  bottom: .65rem;
  right: .85rem;
  font-size: .58rem;
  color: var(--border);
  letter-spacing: .08em;
  text-transform: uppercase;
  pointer-events: none;
  font-family: var(--font);
}

.ds-motion-label {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  padding: .6rem 1rem;
}

.ds-motion-name { font-size: .73rem; font-weight: 600; color: var(--text); margin-bottom: .15rem; }
.ds-motion-spec { font-size: .65rem; color: var(--mid); font-family: monospace; line-height: 1.5; }

/* Motion @keyframes — defined here, scoped to the docs page */
@keyframes ds-fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes ds-growLine {
  from { width: 0; opacity: 0; }
  to   { width: 100%; opacity: 1; }
}

@keyframes ds-dotPop {
  0%   { transform: scale(0); opacity: 0; }
  70%  { transform: scale(1.08); opacity: 1; }
  100% { transform: scale(1); }
}


/* ── 8. ACCESSIBILITY ────────────────────────────────────── */

.ds-a11y-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .85rem;
}

.ds-a11y-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.1rem 1.25rem;
  background: var(--bg);
}

.ds-a11y-tag {
  display: inline-block;
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--blue-tint);
  color: var(--blue);
  padding: .18rem .5rem;
  border-radius: 3px;
  margin-bottom: .5rem;
}

.ds-a11y-title { font-size: .8rem; font-weight: 600; color: var(--text); margin-bottom: .3rem; }

.ds-a11y-body  { font-size: .73rem; color: var(--mid); line-height: 1.7; }

.ds-a11y-body code {
  font-size: .68rem;
  background: var(--bg-subtle);
  padding: .1rem .28rem;
  border-radius: 3px;
  font-family: monospace;
}


/* ── 9. SIDEBAR CHROME ───────────────────────────────────── */

.ds-sidebar-top {
  flex-direction: column;
  align-items: flex-start;
  gap: .35rem;
  padding-bottom: 1.25rem;
}

.ds-sidebar-top .brand-dot {
  animation: none;
  margin-bottom: .2rem;
}

.ds-sidebar-top .sidebar-name { line-height: 1.1; font-size: 1rem; }
.ds-sidebar-top .sidebar-role { padding-left: 0; font-size: .7rem; }

.ds-version {
  display: inline-block;
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .06em;
  background: var(--blue-tint);
  color: var(--blue);
  padding: .15rem .4rem;
  border-radius: 3px;
  margin-top: .2rem;
}

.ds-sidebar-back {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .75rem;
  color: var(--light);
  padding: .4rem 1rem;
  border-radius: 6px;
  transition: color .2s, background .2s;
  margin: -.4rem .75rem .75rem;
  text-decoration: none;
  margin-top: auto;
  margin-bottom: 0;
}

.ds-sidebar-back:hover { color: var(--text); background: var(--bg-subtle); }


/* ── 10. MOBILE HEADER + NAV ─────────────────────────────── */

.ds-mob-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0 1.25rem;
  align-items: center;
  justify-content: space-between;
  z-index: 60;
}

.ds-mob-brand {
  display: flex;
  align-items: center;
  gap: .55rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  text-decoration: none;
}

.ds-mob-brand:hover .ds-mob-name { color: var(--blue); }

.ds-mob-name {
  font-family: var(--font-title);
  font-size: .9rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.ds-mob-burger {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  transition: transform .4s cubic-bezier(.22,.61,.36,1);
}

.ds-mob-burger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .35s cubic-bezier(.22,.61,.36,1),
              opacity   .25s ease,
              width     .25s ease;
  transform-origin: center;
}

.ds-mob-burger.open { transform: rotate(180deg); }
.ds-mob-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.ds-mob-burger.open span:nth-child(2) { width: 0; opacity: 0; }
.ds-mob-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.ds-mob-nav {
  display: none;
  position: fixed;
  top: var(--header-h); left: 0; right: 0; bottom: 0;
  background: var(--white);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  z-index: 55;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}

.ds-mob-nav.open { opacity: 1; pointer-events: auto; }

.ds-mob-nav a {
  font-size: 1rem;
  color: var(--mid);
  cursor: pointer;
  text-decoration: none;
  padding: .4rem 1rem;
  border-radius: 6px;
  transition: color .2s, background .2s;
}

.ds-mob-nav a:hover { color: var(--blue); background: var(--blue-tint); }

.ds-mob-back-link {
  margin-top: 1rem;
  color: var(--blue);
}


/* ── 11. FOOTER ──────────────────────────────────────────── */

.ds-footer {
  width: 100%;
  max-width: 960px;
  padding: 1.75rem 5rem;
  border-top: 1px solid var(--border);
}

.ds-footer p {
  font-size: .7rem;
  color: var(--light);
}


/* ── 12. LABEL TAG ───────────────────────────────────────── */
/* Reusable uppercase label — also defined in global.css.
   This copy is here for use in DS demo HTML snippets. */
.label-tag {
  display: inline-block;
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--blue-tint);
  color: var(--blue);
  padding: .18rem .5rem;
  border-radius: 3px;
  margin-bottom: 0;
}


/* ── 13. RESPONSIVE ──────────────────────────────────────── */

@media (max-width: 860px) {
  .sidebar         { display: none; }
  .ds-mob-header   { display: flex; }
  .ds-mob-nav      { display: flex; }
  .ds-main         { margin-left: 0; padding-top: var(--header-h); overflow-x: hidden; }
  .ds-section      { padding: 2.5rem 1.5rem; overflow-x: hidden; }
  .ds-page-header  { padding: 3.5rem 1.5rem 2rem; }
  .ds-two-col      { grid-template-columns: 1fr; }
  .ds-motion-grid  { grid-template-columns: 1fr; }
  .ds-a11y-grid    { grid-template-columns: 1fr; }
  .ds-type-row     { grid-template-columns: 1fr; gap: .5rem; }
  .ds-type-ratio   { display: none; }
  .ds-demo-preview { padding: 1.5rem 1rem; }
  .ds-footer       { padding: 1.5rem 1.5rem; }
}