/* ====================================================================
   LAYOUT.CSS — Page Shell, Grid, Content Area, Responsive
   Liquid Galaxy Docs · References tokens from tokens.css
   ==================================================================== */


/* ─────────────────────────────────────────────────────────────────────
   PAGE SHELL
   ───────────────────────────────────────────────────────────────────── */
body {
  min-height: 100dvh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}



/* Wrapper that holds sidebar + content horizontally */
.layout-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}


/* ─────────────────────────────────────────────────────────────────────
   DRAWER — DESKTOP COLLAPSED STATE
   ───────────────────────────────────────────────────────────────────── */
.drawer.collapsed {
  width: 0;
  overflow: hidden;
}


/* ─────────────────────────────────────────────────────────────────────
   MAIN CONTENT AREA
   ───────────────────────────────────────────────────────────────────── */
.content-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--md-sys-color-background);
  scroll-behavior: smooth;
}

/* Inner content wrapper: article + optional TOC gutter */
.content-wrapper {
  display: flex;
  gap: 0;
  align-items: flex-start;
  min-height: 100%;
  flex: 1;
}

/* Article column */
.markdown-body {
  flex: 1;
  min-width: 0;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-16) var(--space-12) var(--space-32); /* Generous top/bottom breathing space */
}

/* TOC column — right gutter, only shown on wide screens */
.toc-sidebar {
  display: none; /* shown via media query below */
  padding-top: var(--space-16);
  padding-right: var(--space-6);
}


/* ─────────────────────────────────────────────────────────────────────
   HOMEPAGE SPECIAL LAYOUT
   When the content area holds a home page (.home-hero is present),
   we remove reading-width constraints and allow full bleed sections.
   ───────────────────────────────────────────────────────────────────── */


.zoomable-image-wrapper {
  display: inline-block;
  position: relative;
  cursor: zoom-in;
  margin: var(--space-5) 0;
}

.zoomable-image-wrapper img {
  max-width: 100%;
  max-height: 250px;
  object-fit: contain;
  display: block;
  /* border-radius: var(--md-sys-shape-corner-medium); */
  transition: transform 0.2s;
}

.zoomable-image-wrapper:hover img {
  transform: scale(1.02);
}

.zoomable-image-wrapper .zoom-icon {
  position: absolute;
  bottom: 20px;
  right: 2px;
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  border-radius: 50%;
  padding: 6px;
  font-size: 24px;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.zoomable-image-wrapper:hover .zoom-icon {
  opacity: 1;
}

/* Lightbox styles */
.lightbox {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: color-mix(in srgb, var(--md-sys-color-scrim) 85%, transparent);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(5px);
  cursor: zoom-out;
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  width: 80vw;
  height: 80vh;
  object-fit: contain;
  /* border-radius: var(--md-sys-shape-corner-large); */
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  cursor: default;
}

.markdown-body pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
  color: inherit;
}

/* Code Block Copy Button */
.code-block-wrapper {
  position: relative;
  margin-bottom: var(--space-4);
}

.code-block-wrapper pre {
  margin-bottom: 0;
}

.copy-code-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface-variant);
  border: none;
  border-radius: 4px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s, background 0.2s, color 0.2s;
}

.code-block-wrapper:hover .copy-code-btn {
  opacity: 1;
}

.copy-code-btn:hover {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.copy-code-btn.copied {
  background: var(--lg-accent-green);
  color: white;
  opacity: 1;
}

.copy-code-btn .material-icons {
  font-size: 18px;
}

.markdown-body:has(.home-hero) {
  max-width: none;
  margin: 0;
  padding: 0;
}

/* Homepage inner content constraint (cards, divider) */
.home-hero ~ * {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

/* The hero itself is full-width */
.home-hero {
  width: 100%;
}

/* Info cards grid layout — bottom spacing from doc-grid-section below */
.home-cards {
  padding-bottom: 0;
}



/* ─────────────────────────────────────────────────────────────────────
   FOOTER
   ───────────────────────────────────────────────────────────────────── */
.site-footer {
  flex-shrink: 0;
  background: var(--md-sys-color-surface-container);
  /* Faint hairline — softer than a solid line, consistent with outline-variant philosophy */
  border-top: 1px solid color-mix(in srgb, var(--md-sys-color-outline-variant) 60%, transparent);
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.site-footer p {
  margin: 0;
  font-size: var(--md-sys-typescale-body-small-size);
  color: var(--md-sys-color-on-surface-variant);
  letter-spacing: var(--md-sys-typescale-body-small-tracking);
}

.site-footer a {
  color: var(--md-sys-color-primary);
  font-size: var(--md-sys-typescale-body-small-size);
  font-weight: 500;
}


/* ─────────────────────────────────────────────────────────────────────
   RESPONSIVE BREAKPOINTS
   Mobile-first — add features as viewport grows.
   ───────────────────────────────────────────────────────────────────── */

/* ── LARGE DESKTOP: Show TOC right gutter (≥ 1280px) ── */
@media (min-width: 1280px) {
  .content-wrapper {
    /* Article max-width + TOC gutter + gap */
    max-width: calc(var(--content-max) + var(--toc-w) + var(--space-8));
    margin: 0 auto;
    gap: var(--space-8);
    padding: 0 var(--space-8);
  }

  .markdown-body {
    margin: 0;
    padding: var(--space-10) 0 var(--space-24);
  }

  /* Reveal TOC sidebar */
  .toc-sidebar {
    display: block;
  }

  /* Homepage: disable the centering constraints (needs full width) */
  .markdown-body:has(.home-hero) .content-wrapper {
    max-width: none;
    padding: 0;
  }

  /* When drawer is collapsed or TOC is hidden, keep markdown-body centered */
  .drawer.collapsed ~ .content-area .markdown-body,
  .content-wrapper:has(#toc-sidebar[style*="display: none"]) .markdown-body {
    margin: 0 auto;
  }
}

/* ── MEDIUM DESKTOP: Content with comfortable padding (≥ 960px) ── */
@media (min-width: 960px) and (max-width: 1279px) {
  .content-wrapper {
    padding: 0 var(--space-8);
  }

  .markdown-body {
    padding: var(--space-10) 0 var(--space-24);
  }
}


/* ── TABLET: Sidebar becomes overlay drawer (< 960px) ── */
@media (max-width: 959px) {
  .drawer {
    position: fixed;
    left: 0;
    top: var(--topbar-h);
    height: calc(100dvh - var(--topbar-h));
    z-index: 180;
    box-shadow: var(--md-sys-elevation-shadow-5);
    /* Hidden by default on mobile */
    transform: translateX(-100%);
    /* Override collapsed so width stays for the animation */
    width: var(--sidebar-w) !important;
  }

  /* When drawer is open on mobile (NOT collapsed) */
  .drawer:not(.collapsed) {
    transform: translateX(0);
  }

  /* Collapsed = off-screen */
  .drawer.collapsed {
    transform: translateX(-100%);
    overflow: hidden;
  }

  .content-wrapper {
    padding: 0 var(--space-4);
  }

  .markdown-body {
    padding: var(--space-6) 0 var(--space-16);
  }
}


/* ── MOBILE: Reduce padding further (< 600px) ── */
@media (max-width: 599px) {
  .app-bar {
    padding: 0 var(--space-2);
    gap: var(--space-1);
  }

  .brand h1 {
    /* Shorten on very small screens */
    font-size: 15px;
  }

  .search-container {
    display: none; /* hidden on mobile per existing behavior */
  }

  .content-wrapper {
    padding: 0 var(--space-3);
  }

  .markdown-body {
    padding: var(--space-5) 0 var(--space-12);
  }

  .markdown-body h1 {
    font-size: var(--md-sys-typescale-headline-large-size);
    line-height: var(--md-sys-typescale-headline-large-line-height);
  }

  .home-hero {
    /* Keep bottom padding: the 3px 4-color stripe ::after sits at the very edge */
    padding: var(--space-8) var(--space-4) var(--space-8);
  }

  .home-hero ~ * {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .home-cards {
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding: var(--space-3) var(--space-4);
    justify-content: center;
    text-align: center;
  }
}


/* ── VERY SMALL: Contribute button label shortens (< 400px) ── */
@media (max-width: 399px) {
  .brand {
    min-width: 0;
  }
  .brand h1 {
    display: none;
  }
}