/* ====================================================================
   COMPONENTS.CSS — Material Design 3 Component Styles
   Liquid Galaxy Docs · References tokens from tokens.css
   ==================================================================== */


/* ─────────────────────────────────────────────────────────────────────
   RESET
   ───────────────────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--md-sys-typescale-font-family-plain);
  font-size:   var(--md-sys-typescale-body-large-size);
  line-height: 1.65;
  font-weight: var(--md-sys-typescale-body-large-weight);
  background:  var(--md-sys-color-background);
  color:       var(--md-sys-color-on-background);
}

a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
a:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
  border-radius: var(--md-sys-shape-corner-extra-small);
}


/* ─────────────────────────────────────────────────────────────────────
   HEADER / TOP APP BAR
   ───────────────────────────────────────────────────────────────────── */
.app-bar {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  /* Calm, barely-differentiated from body — surface-container-low reads as one plane */
  background: var(--md-sys-color-surface-container-low);
  /* Faint hairline only — prefer tonal surface over strong border jump */
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(--md-sys-elevation-shadow-0);
  transition:
    box-shadow var(--md-sys-motion-duration-short-4) var(--md-sys-motion-easing-standard),
    background var(--md-sys-motion-duration-short-4) var(--md-sys-motion-easing-standard);
  flex-shrink: 0;
}

/* Elevation added on scroll via JS .scrolled class */
.app-bar.scrolled {
  box-shadow: var(--md-sys-elevation-shadow-2);
  background: var(--md-sys-color-surface-container);
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 200px;
  text-decoration: none;
}

.brand-logo {
  width: 70px;
  height: 36px;
  border-radius: var(--md-sys-shape-corner-small);
  /* background: var(--md-sys-color-primary); */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  transition: background var(--md-sys-motion-duration-short-4) var(--md-sys-motion-easing-standard);
}
.brand-logo img {
  width: 64px;
  height: 28px;
  object-fit: contain;
}
.brand-logo .brand-abbr {
  color: var(--md-sys-color-on-primary);
  font-size: 15px;
  font-weight: 700;
  font-family: var(--md-sys-typescale-font-family-brand);
  letter-spacing: -0.5px;
}

.brand h1 {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400;
  line-height: var(--md-sys-typescale-title-medium-line-height);
  letter-spacing: var(--md-sys-typescale-title-medium-tracking);
  color: var(--md-sys-color-on-surface);
  white-space: nowrap;
}
.brand h1 span {
  color: var(--md-sys-color-primary);
  font-weight: 500;
}

/* Search (MDN Style) */
.search-container {
  flex: 1;
  max-width: 600px;
  margin: 0 var(--space-4);
  display: flex;
  justify-content: center;
}

.mdn-search-field {
  width: 100%;
  border-radius: 8px; /* For the custom outline focus ring below */
  
  /* MDN-style 8px rounded corners instead of top-rounded Material field */
  --md-filled-text-field-container-shape: 8px;
  
  /* Filled background */
  --md-filled-text-field-container-color: var(--md-sys-color-surface-container-high);
  
  /* Hide the Material bottom line (active indicator) entirely */
  --md-filled-text-field-active-indicator-color: transparent;
  --md-filled-text-field-focus-active-indicator-color: transparent;
  --md-filled-text-field-hover-active-indicator-color: transparent;
  --md-filled-text-field-active-indicator-height: 0px;
  --md-filled-text-field-focus-active-indicator-height: 0px;
  --md-filled-text-field-hover-active-indicator-height: 0px;
  
  /* Text and Icon Colors */
  --md-filled-text-field-input-text-color: var(--md-sys-color-on-surface);
  --md-filled-text-field-input-text-placeholder-color: var(--md-sys-color-on-surface-variant);
  --md-filled-text-field-icon-color: var(--md-sys-color-on-surface-variant);
  
  /* Custom outline transition to mimic MDN search */
  outline: 1px solid transparent;
  transition: background-color 0.2s, outline-color 0.2s, box-shadow 0.2s;
}

.mdn-search-field:hover {
  --md-filled-text-field-container-color: var(--md-sys-color-surface-container-highest);
}

.mdn-search-field:focus-within {
  --md-filled-text-field-container-color: var(--md-sys-color-surface);
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px; /* Moved outside to preserve breathing room */
  box-shadow: none;
}

.search-shortcut {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  border-radius: 4px;
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 12px;
  font-weight: 600;
  user-select: none;
  pointer-events: none;
}

/* Header actions (right side) */
.actions {
  margin-left: auto;
  display: flex;
  gap: var(--space-1);
  align-items: center;
}

/* Theme toggle button */
#theme-toggle {
  --md-icon-button-icon-color: var(--md-sys-color-on-surface-variant);
  --md-icon-button-hover-state-layer-color: var(--md-sys-color-on-surface-variant);
}
/* Hide in iframe mode */
html.iframe-mode #theme-toggle,
.iframe-mode #theme-toggle {
  display: none !important;
}
#theme-toggle:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
  border-radius: var(--md-sys-shape-corner-full);
}
/* Smooth icon swap — opacity fade prevents layout-flash on sun↔moon toggle */
#theme-toggle .material-icons {
  transition: opacity var(--md-sys-motion-duration-short-3) var(--md-sys-motion-easing-standard);
}

/* Filled buttons (dialog submit, etc.) */
md-filled-button {
  --md-filled-button-container-shape:           var(--md-sys-shape-corner-full);
  --md-filled-button-container-color:           var(--md-sys-color-primary);
  --md-filled-button-label-text-color:          var(--md-sys-color-on-primary);
  --md-filled-button-hover-container-elevation: 2;
  font-weight: 600;
  font-size: var(--md-sys-typescale-label-large-size);
}

/* Menu toggle (hamburger) */
#menu-toggle {
  --md-icon-button-icon-color: var(--md-sys-color-on-surface-variant);
}
#menu-toggle:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
  border-radius: var(--md-sys-shape-corner-full);
}


/* ─────────────────────────────────────────────────────────────────────
   SIDEBAR / NAVIGATION DRAWER
   ───────────────────────────────────────────────────────────────────── */
.drawer {
  width: var(--sidebar-w);
  height: calc(100dvh - var(--topbar-h, 72px));
  max-height: calc(100dvh - var(--topbar-h, 72px));
  position: sticky;
  top: var(--topbar-h, 72px);
  flex-shrink: 0;
  background: var(--md-sys-color-surface-container-low);
  /* No right-side divider line — tonal surface differentiation only */
  border-right: none;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline-variant) transparent;
  transition:
    transform   var(--md-sys-motion-duration-medium-2) var(--md-sys-motion-easing-emphasized),
    width       var(--md-sys-motion-duration-medium-2) var(--md-sys-motion-easing-emphasized),
    box-shadow  var(--md-sys-motion-duration-short-4) var(--md-sys-motion-easing-standard);
  will-change: transform;
}

/* Drawer section label — label-small, all-caps, muted */
.drawer-header {
  padding: var(--space-5) var(--space-4) var(--space-2) var(--space-5);
  font-size:      var(--md-sys-typescale-label-small-size);
  font-weight:    var(--md-sys-typescale-label-small-weight);
  line-height:    var(--md-sys-typescale-label-small-line-height);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--md-sys-color-on-surface-variant);
  user-select: none;
}

/* Navigation list container */
md-list {
  --md-list-container-color: transparent;
  padding: 0 var(--space-2) var(--space-4);
}

/* Individual nav items */
md-list-item {
  --md-list-item-label-text-color:          var(--md-sys-color-on-surface-variant);
  --md-list-item-label-text-weight:         var(--md-sys-typescale-body-medium-weight);
  --md-list-item-label-text-size:           var(--md-sys-typescale-body-medium-size);
  --md-list-item-container-shape:           var(--md-sys-shape-corner-small);
  /* M3 minimum 48px touch target */
  --md-list-item-one-line-container-height: 48px;
  --md-list-item-container-color:           transparent;
  border-radius: var(--md-sys-shape-corner-small);
  /* 16px horizontal padding per M3 nav-drawer spec */
  padding-left:  var(--space-4);
  padding-right: var(--space-4);
  /* Slightly increased gap between items for breath */
  margin-bottom: 4px;
  position: relative;
  transition:
    background var(--md-sys-motion-duration-short-3) var(--md-sys-motion-easing-standard);
}

/* Hover — subtle surface shift, no border */
md-list-item:hover {
  --md-list-item-container-color: var(--md-sys-color-surface-container-highest);
  --md-list-item-label-text-color: var(--md-sys-color-on-surface);
}

/* Active (current page) — full-width rounded fill, no left accent bar */
md-list-item.active {
  --md-list-item-container-color: color-mix(in srgb, var(--md-sys-color-primary-container) 55%, var(--md-sys-color-surface-container-low));
  --md-list-item-label-text-color: var(--md-sys-color-on-surface);
  --md-list-item-label-text-weight: 600;
}

/* NO left-accent bar pseudo-element (removed per spec) */

/* Focus ring on list items */
md-list-item:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: -2px;
  border-radius: var(--md-sys-shape-corner-small);
}

/* Mobile: drawer becomes overlay */
.drawer-scrim {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--md-sys-color-scrim);
  opacity: 0;
  z-index: 150;
  transition: opacity var(--md-sys-motion-duration-medium-2) var(--md-sys-motion-easing-standard);
}
.drawer-scrim.visible {
  display: block;
  opacity: 0.4;
}


/* ─────────────────────────────────────────────────────────────────────
   MARKDOWN / ARTICLE CONTENT
   ───────────────────────────────────────────────────────────────────── */
/* ── CUSTOM SVG LOADER ANIMATION ── */
:root {
  --p: 0.10;
  --eps: 0.06;
}

/* Zero out article padding & force 100% width & height centering when loader is present */
.content-wrapper:has(.custom-loader-wrapper) {
  max-width: 100% !important;
  width: 100% !important;
  margin: 0 auto !important;
  justify-content: center !important;
  min-height: calc(100dvh - var(--topbar-h, 72px)) !important;
}

.markdown-body:has(.custom-loader-wrapper) {
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  margin: 0 auto !important;
  max-width: 100% !important;
  width: 100% !important;
  min-height: calc(100dvh - var(--topbar-h, 72px)) !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
}

.custom-loader-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - var(--topbar-h, 72px));
  width: 100%;
  margin: 0 auto;
  padding: 0;
  box-sizing: border-box;
}

html.iframe-mode .custom-loader-wrapper,
.iframe-mode .custom-loader-wrapper {
  min-height: calc(100dvh - var(--topbar-h, 72px)) !important;
}

.visually-hidden {
  clip-path: inset(50%);
  height: 1px;
  width: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}

.custom-loader-section {
  display: inline-block;
  animation: loader-rotation 1.5s ease-in-out infinite;
}

.custom-loader-section svg {
  display: block;
  position: relative;
  width: 120px;
  height: 120px;
}

.custom-loader-section path.loader {
  stroke: var(--md-sys-color-primary, #8fa5d4);
  stroke-dasharray: 1;
  stroke-dashoffset: calc(1 - var(--p)); 
  transition: stroke-dashoffset 2s linear;
}

.custom-loader-section path.circle {
  stroke: var(--md-sys-color-outline-variant, #353A49);
  display: block;
  stroke-dasharray: 1;
  stroke-dashoffset: calc(var(--p) + var(--eps));
  rotate: 160deg;
  scale: 1 -1;
  transform-origin: 50% 50%;
  transition: stroke-dashoffset 2s linear;
}

@keyframes loader-rotation {
  to {
    rotate: 360deg;
  }
}

.markdown-body {
  color: var(--md-sys-color-on-surface);
  font-size:   var(--md-sys-typescale-body-large-size);
  /* Target line-height 1.65 for comfortable reading rhythm */
  line-height: 1.65;
  font-family: var(--md-sys-typescale-font-family-plain);
}

/* Page Title (dynamically injected at top) */
.dynamic-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--md-sys-color-on-surface);
  padding: var(--space-4) 0;
  margin-bottom: var(--space-8);
  border-bottom: 1px solid color-mix(in srgb, var(--md-sys-color-outline-variant) 60%, transparent);
}

/* Contributor Credit (dynamically injected at bottom) */
.doc-credit {
  display: block;
  float: right;
  clear: both;
  font-weight: 700;
  font-size: 1.1rem;
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
  color: var(--md-sys-color-on-surface);
}

/* H1 — display-small, ~24px top space, 16px below before first paragraph */
.markdown-body h1 {
  font-size:      var(--md-sys-typescale-display-small-size);
  line-height:    var(--md-sys-typescale-display-small-line-height);
  font-weight:    600;
  letter-spacing: -0.5px;
  color:          var(--md-sys-color-on-surface);
  margin:         var(--space-6) 0 var(--space-4);
  padding:        0;
  /* No border-bottom — spacing leads separation, not a line */
  border:         none;
}

/* H2 — headline-small, ~32px above, spacing-led section separation */
.markdown-body h2 {
  font-size:      var(--md-sys-typescale-headline-small-size);
  line-height:    var(--md-sys-typescale-headline-small-line-height);
  font-weight:    600;
  letter-spacing: var(--md-sys-typescale-headline-small-tracking);
  color:          var(--md-sys-color-on-surface);
  margin-top:     var(--space-10);
  margin-bottom:  var(--space-4);
  padding:        0;
  /* Very faint hairline at low opacity — barely visible tonal separation */
  border-bottom:  1px solid color-mix(in srgb, var(--md-sys-color-outline-variant) 40%, transparent);
  padding-bottom: var(--space-3);
}

/* H3 — title-large, single-blue accent only (never use lg-accent-* here) */
.markdown-body h3 {
  font-size:      var(--md-sys-typescale-title-large-size);
  line-height:    var(--md-sys-typescale-title-large-line-height);
  font-weight:    600;
  letter-spacing: 0;
  color:          var(--md-sys-color-primary);
  margin-top:     var(--space-8);
  margin-bottom:  var(--space-2);
}

/* H4 */
.markdown-body h4 {
  font-size:     var(--md-sys-typescale-title-medium-size);
  line-height:   var(--md-sys-typescale-title-medium-line-height);
  font-weight:   var(--md-sys-typescale-title-medium-weight);
  color:         var(--md-sys-color-on-surface);
  margin-top:    var(--space-6);
  margin-bottom: var(--space-1);
}

/* Paragraphs */
.markdown-body p {
  margin: 0 0 var(--space-6);
  letter-spacing: var(--md-sys-typescale-body-large-tracking);
}

/* Lists */
.markdown-body ul,
.markdown-body ol {
  margin: 0 0 var(--space-4);
  padding-left: var(--space-6);
}
.markdown-body li {
  margin-bottom: var(--space-1);
  letter-spacing: var(--md-sys-typescale-body-large-tracking);
}
.markdown-body li + li {
  margin-top: var(--space-1);
}

/* Inline code */
.markdown-body code {
  font-family: var(--md-sys-typescale-font-family-mono);
  font-size: 0.875em;
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-primary);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-extra-small);
  padding: 2px 6px;
}

/* Code blocks (Always dark to support vs2015 syntax theme) */
.markdown-body pre {
  background-color: #2f3232;
  border: none;
  border-radius: 10px; /* Matched to visualdark preference */
  padding: var(--space-5);
  overflow-x: auto;
  margin: var(--space-4) 0 var(--space-6);
  position: relative;
}
.markdown-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: #e2e2e2;
  font-size: var(--md-sys-typescale-body-medium-size);
  line-height: 1.65;
}

/* Blockquote */
.markdown-body blockquote {
  border-left: 4px solid var(--md-sys-color-primary);
  margin: var(--space-6) 0;
  padding: 10px 14px 10px;
  background: color-mix(in srgb, var(--md-sys-color-primary-container) 50%, transparent);
  border-radius: 0 var(--md-sys-shape-corner-medium) var(--md-sys-shape-corner-medium) 0;
  color: var(--md-sys-color-on-surface-variant);
  font-style: normal;
}

/* ── Legacy "visualdark" overrides for Dark Mode ── */
html[data-theme="dark"] .markdown-body code {
  background-color: #2f3232;
  color: #e2e2e2;
  border: none;
}
html[data-theme="dark"] .markdown-body blockquote {
  background: #535457;
  border-left: 3px solid #06fff1;
  color: #ffffff;
  font-style: italic;
  letter-spacing: 0.1em;
}

/* Tables */
.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--md-sys-typescale-body-medium-size);
  margin: var(--space-6) 0;
  border-radius: var(--md-sys-shape-corner-small);
  overflow: hidden;
  border: 1px solid var(--md-sys-color-outline-variant);
}
.markdown-body th {
  background: var(--md-sys-color-surface-container);
  font-weight: 600;
  font-size: var(--md-sys-typescale-label-large-size);
  letter-spacing: var(--md-sys-typescale-label-large-tracking);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  text-align: left;
  color: var(--md-sys-color-on-surface);
}
.markdown-body td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface);
}
.markdown-body tr:last-child td {
  border-bottom: none;
}
.markdown-body tr:hover td {
  background: color-mix(in srgb, var(--md-sys-color-primary) 4%, transparent);
}

/* Images */
.markdown-body img {
  max-width: 100%;
  border: 1px solid var(--md-sys-color-outline-variant);
  /* border-radius: var(--md-sys-shape-corner-medium); */
  margin: var(--space-4) 0;
  display: block;
}

/* Horizontal rule — very subtle, spacing-led */
.markdown-body hr {
  border: none;
  border-top: 1px solid color-mix(in srgb, var(--md-sys-color-outline-variant) 50%, transparent);
  margin: var(--space-8) 0;
}

/* Strong / emphasis */
.markdown-body strong { color: var(--md-sys-color-on-surface); font-weight: 600; }
.markdown-body em     { font-style: italic; }


/* ─────────────────────────────────────────────────────────────────────
   HOME PAGE (Developer Portal Redesign)
   ───────────────────────────────────────────────────────────────────── */
.home-hero {
  padding: 96px var(--space-4) 48px var(--space-4);
  text-align: center;
  background: radial-gradient(ellipse at top, color-mix(in srgb, var(--md-sys-color-primary) 15%, transparent) 0%, transparent 70%);
  position: relative;
}

/* Restored: 4-color Google/LG stripe at the bottom of the hero */
.home-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    #4285F4 0% 25%,
    #EA4335 25% 50%,
    #FBBC05 50% 75%,
    #34A853 75% 100%
  );
  opacity: 0.9;
}

.hero-search-container {
  max-width: 620px;
  margin: var(--space-6) auto 0 auto;
  padding: 0 var(--space-4);
}

.hero-search-btn {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--space-4) var(--space-5);
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 30px;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  box-shadow: var(--md-sys-elevation-shadow-1);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-search-btn:hover {
  background: var(--md-sys-color-surface-container-highest);
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--md-sys-color-primary) 15%, transparent);
  transform: translateY(-2.5px);
}

.hero-search-btn:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.hero-search-btn .search-icon {
  font-size: 24px;
  margin-right: var(--space-3);
  color: var(--md-sys-color-primary);
  transition: transform 0.25s ease;
}

.hero-search-btn:hover .search-icon {
  transform: scale(1.1);
}

.hero-search-btn .search-placeholder {
  font-size: 1.1rem;
  font-weight: 400;
  flex: 1;
  text-align: left;
  color: var(--md-sys-color-on-surface-variant);
}

.hero-search-btn .search-shortcut {
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 6px;
  padding: 2px 8px;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface-variant);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}

.lg-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: 16px;
  background: color-mix(in srgb, var(--md-sys-color-primary) 15%, transparent);
  color: var(--md-sys-color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-6);
  border: 1px solid color-mix(in srgb, var(--md-sys-color-primary) 30%, transparent);
}

.home-hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  line-height: 1.1;
  background: linear-gradient(135deg, var(--md-sys-color-on-surface) 0%, var(--md-sys-color-on-surface-variant) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.home-hero p {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--md-sys-color-on-surface-variant);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Common Section Container */
.home-section {
  padding: var(--space-8) var(--space-4);
  max-width: var(--content-max);
  margin: 0 auto;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--md-sys-color-on-surface);
}

/* Recent Docs */
.recent-docs-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.recent-doc-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--md-sys-color-on-surface);
  font-weight: 500;
}

.recent-doc-item:hover, .recent-doc-item:focus {
  background: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-primary);
  transform: translateY(-2px);
  outline: none;
}

.recent-doc-item .material-icons {
  color: var(--md-sys-color-primary);
  opacity: 0.8;
}

/* Features Grid */
.features-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(4, 1fr);
}

.feature-card {
  padding: var(--space-4);
  background: var(--md-sys-color-surface-container-lowest);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.2s ease;
}

/* Restored Google/LG colored borders for the feature cards */
.feature-card:nth-child(1) { border-top: 3px solid color-mix(in srgb, #4285F4 80%, transparent); }
.feature-card:nth-child(2) { border-top: 3px solid color-mix(in srgb, #EA4335 80%, transparent); }
.feature-card:nth-child(3) { border-top: 3px solid color-mix(in srgb, #FBBC05 80%, transparent); }
.feature-card:nth-child(4) { border-top: 3px solid color-mix(in srgb, #34A853 80%, transparent); }

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.feature-card img {
  width: 100%;
  max-width: 80px; /* Made compact as requested */
  height: 80px;
  object-fit: contain;
  margin-bottom: var(--space-3);
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
  mix-blend-mode: screen; /* Removes dark backgrounds from images */
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--md-sys-color-on-surface);
}

.feature-card p {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.9rem;
  line-height: 1.4;
}

/* CTA Section */
.home-cta-section {
  margin: var(--space-4) auto;
  padding: var(--space-8) var(--space-6);
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 12px;
  text-align: center;
  max-width: 800px;
}

.home-cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--md-sys-color-on-surface);
}

.home-cta-section p {
  font-size: 1.1rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: var(--space-8);
}

.home-cta-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-primary, .cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  font-family: inherit;
  border: none;
}
/* ─────────────────────────────────────────────────────────────────────
   MDN-STYLE SEARCH MODAL
   ───────────────────────────────────────────────────────────────────── */
.mdn-search-modal {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 9999;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
}

.mdn-search-modal.active {
  display: flex;
}

.mdn-search-content {
  width: 100%;
  max-width: 650px;
  background: var(--md-sys-color-surface-container);
  border: none;
  border-radius: 16px;
  box-shadow: 0 24px 48px rgba(0,0,0,0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  margin: 0 var(--space-4);
}

.mdn-search-header {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 16px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  background: transparent;
}

@property --mixBlueRed {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 25%;
}
@property --mixRedYellow {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 50%;
}
@property --mixYellowGreen {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 75%;
}
@property --mixGreenYellow {
  syntax: "<percentage>";
  inherits: false;
  initial-value: 100%;
}

.mdn-search-header {
  position: relative;
  --blue: oklch(63.04% 0.18 259.96);
  --red: oklch(62.57% 0.2058 29.08);
  --yellow: oklch(83.04% 0.1698 83.99);
  --green: oklch(64.75% 0.1603 148.5);
}

.mdn-search-header .googleVoice {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 10px;        /* 5px blur row + 5px sharp line row */
  opacity: 0;
  pointer-events: none;
  overflow: visible;
  transition: opacity 0.3s ease;
}

.mdn-search-header.is-typing .googleVoice {
  opacity: 1;
}

/* Shared gradient for both elements */
.mdn-search-header .googleVoice .rect {
  position: absolute;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(
    to right,
    var(--blue) 0 var(--mixBlueRed),
    var(--red) var(--mixBlueRed) var(--mixRedYellow),
    var(--yellow) var(--mixRedYellow) var(--mixYellowGreen),
    var(--green) var(--mixYellowGreen) 100%
  );
  transition: --mixBlueRed 0.5s, --mixRedYellow 0.5s, --mixYellowGreen 0.5s;
}

/* Sharp line — sits at the very bottom */
.mdn-search-header .googleVoice .rect:not(.blur) {
  bottom: 0;
  top: auto;
}

.mdn-search-header.is-typing .googleVoice .rect {
  animation: googleVoice 2s ease infinite alternate;
}

/* Blur row — sits ABOVE the sharp line, glow bleeds downward over it */
.mdn-search-header .googleVoice .rect.blur {
  top: 0;
  height: 5px;                          /* taller = more color mass for the glow */
  filter: blur(10px) ;        /* tight blur + saturate keeps colors rich & vivid */
}


@keyframes googleVoice {
  0% {
    --mixBlueRed: 80%;  
    --mixRedYellow: 88%;
    --mixYellowGreen: 96%;
    --mixGreenYellow: 100%;
  }
  15% {
    --mixBlueRed: 10%;
    --mixRedYellow: 70%;
    --mixYellowGreen: 96%;
    --mixGreenYellow: 100%;
  }
  30% {
    --mixBlueRed: 10%;
    --mixRedYellow: 80%;
    --mixYellowGreen: 96%;
    --mixGreenYellow: 100%;
  }
  45% {
    --mixBlueRed: 10%;
    --mixRedYellow: 60%;
    --mixYellowGreen: 76%;
    --mixGreenYellow: 50%;
  }
  60% {
    --mixBlueRed: 0%;
    --mixRedYellow: 10%;
    --mixYellowGreen: 90%;
    --mixGreenYellow: 100%;
  }
  75% {
    --mixBlueRed: 0%;
    --mixRedYellow: 10%;
    --mixYellowGreen: 20%;
    --mixGreenYellow: 40%;
  }
  100% {
    --mixBlueRed: 88%;
    --mixRedYellow: 98%;
    --mixYellowGreen: 93%;
    --mixGreenYellow: 100%;
  }
}

.mdn-search-header .search-icon {
  opacity: 0.8;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.mdn-search-header.is-typing .search-icon {
  opacity: 0;
  transform: scale(0.8);
}

.mdn-search-header input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface);
  font-size: 1.1rem;
  padding: 20px 16px;
  outline: none;
  font-family: inherit;
}

.mdn-search-header input::placeholder {
  color: var(--md-sys-color-on-surface-variant);
}

.mdn-search-close {
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.2s;
}

.mdn-search-close:hover {
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-variant);
}

.mdn-search-results {
  max-height: 60vh;
  overflow-y: auto;
  background: transparent;
}

.search-empty {
  padding: 32px 24px;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
}

.mdn-search-result-item {
  padding: 16px 20px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  cursor: pointer;
  display: block;
  text-decoration: none;
  transition: background 0.2s;
}

.mdn-search-result-item:last-child {
  border-bottom: none;
}

.mdn-search-result-item:hover, 
.mdn-search-result-item:focus,
.mdn-search-result-item.active-focus {
  background: var(--md-sys-color-surface-container-highest);
  outline: none;
}

.mdn-search-result-breadcrumb {
  font-size: 11px;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.mdn-search-result-title {
  font-size: 16px;
  color: var(--md-sys-color-primary);
}

.mdn-search-result-item:hover .mdn-search-result-title, 
.mdn-search-result-item:focus .mdn-search-result-title,
.mdn-search-result-item.active-focus .mdn-search-result-title {
  color: var(--md-sys-color-on-surface);
}

.mdn-search-result-item:hover .mdn-search-result-breadcrumb, 
.mdn-search-result-item:focus .mdn-search-result-breadcrumb,
.mdn-search-result-item.active-focus .mdn-search-result-breadcrumb {
  color: var(--md-sys-color-on-surface-variant);
}

.mdn-search-highlight {
  background: rgba(255, 235, 59, 0.2);
  color: var(--md-sys-color-on-surface);
  border-radius: 2px;
  padding: 0 2px;
}

/* Header Search Trigger Button */
.header-search-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 24px;
  padding: 4px 12px 4px 8px;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  font-family: inherit;
}

.header-search-trigger:hover {
  background: var(--md-sys-color-surface-container-highest);
  border-color: var(--md-sys-color-outline);
  color: var(--md-sys-color-on-surface);
}

.header-search-trigger .material-icons {
  font-size: 20px;
}

.header-search-trigger .search-text {
  font-size: 14px;
  font-weight: 500;
}

.header-search-trigger .search-shortcut-key {
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 4px;
  padding: 0 4px;
  background: var(--md-sys-color-surface);
}
.cta-primary {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.cta-primary:hover {
  background: color-mix(in srgb, var(--md-sys-color-primary) 85%, black);
  transform: translateY(-2px);
}

.cta-secondary {
  background: transparent;
  color: var(--md-sys-color-on-surface);
  border: 1px solid var(--md-sys-color-outline);
}

.cta-secondary:hover {
  background: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-on-surface);
}


/* ─────────────────────────────────────────────────────────────────────
   DOCUMENT NAVIGATION (Prev / Next)
   ───────────────────────────────────────────────────────────────────── */
.doc-navigation {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid color-mix(in srgb, var(--md-sys-color-outline-variant) 50%, transparent);
  clear: both;
}

.doc-nav-link {
  display: flex;
  flex-direction: column;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  text-decoration: none;
  flex: 1;
  transition:
    background   var(--md-sys-motion-duration-short-3) var(--md-sys-motion-easing-standard),
    border-color var(--md-sys-motion-duration-short-3) var(--md-sys-motion-easing-standard);
}

.doc-nav-link:hover {
  background: var(--md-sys-color-surface-container);
  border-color: var(--md-sys-color-outline);
  text-decoration: none;
}

.doc-nav-link:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.doc-nav-prev {
  align-items: flex-start;
  text-align: left;
}

.doc-nav-next {
  align-items: flex-end;
  text-align: right;
}

.doc-nav-label {
  font-size: var(--md-sys-typescale-label-small-size);
  font-weight: var(--md-sys-typescale-label-small-weight);
  color: var(--md-sys-color-on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  margin-bottom: var(--space-1);
}

.doc-nav-title {
  font-size: var(--md-sys-typescale-title-medium-size);
  font-weight: 500;
  color: var(--md-sys-color-primary);
  line-height: var(--md-sys-typescale-title-medium-line-height);
}


/* ─────────────────────────────────────────────────────────────────────
   ON THIS PAGE — TOC SIDEBAR
   ───────────────────────────────────────────────────────────────────── */
.toc-sidebar {
  flex-shrink: 0;
  width: var(--toc-w);
}

.toc-nav {
  position: sticky;
  top: calc(var(--topbar-h) + var(--space-6));
  max-height: calc(100vh - var(--topbar-h) - 64px);
  overflow-y: auto;
  padding: 0 var(--space-1);
}

.toc-heading {
  font-size:      var(--md-sys-typescale-label-small-size);
  font-weight:    var(--md-sys-typescale-label-small-weight);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--md-sys-color-on-surface-variant);
  margin: 0 0 var(--space-3) var(--space-3);
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  /* Faint left-border for visual scanning — softened */
  border-left: 1px solid color-mix(in srgb, var(--md-sys-color-outline-variant) 60%, transparent);
}

.toc-item {
  margin: 0;
  line-height: 1;
}

.toc-h3 {
  padding-left: var(--space-4);
}

.toc-link {
  display: block;
  padding: 5px var(--space-3);
  font-size: var(--md-sys-typescale-body-small-size);
  line-height: 1.5;
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
  border-radius: var(--md-sys-shape-corner-extra-small);
  transition:
    color      var(--md-sys-motion-duration-short-3) var(--md-sys-motion-easing-standard),
    background var(--md-sys-motion-duration-short-3) var(--md-sys-motion-easing-standard);
}
.toc-link:hover {
  color: var(--md-sys-color-on-surface);
  background: color-mix(in srgb, var(--md-sys-color-on-surface) 6%, transparent);
  text-decoration: none;
}
.toc-link.active {
  color: var(--md-sys-color-primary);
  font-weight: 500;
  background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent);
}


/* ─────────────────────────────────────────────────────────────────────
   DIALOG
   ───────────────────────────────────────────────────────────────────── */
md-dialog {
  --md-dialog-container-shape:       var(--md-sys-shape-corner-extra-large);
  --md-dialog-container-color:       var(--md-sys-color-surface-container-high);
  --md-dialog-headline-color:        var(--md-sys-color-on-surface);
  --md-dialog-supporting-text-color: var(--md-sys-color-on-surface-variant);
}

md-dialog:not(:defined) { display: none; }

.form-group {
  margin-bottom: var(--space-4);
}

.form-group label {
  font-size:   var(--md-sys-typescale-body-small-size);
  color:       var(--md-sys-color-on-surface-variant);
  font-weight: 500;
  letter-spacing: var(--md-sys-typescale-body-small-tracking);
}

input[type="file"] {
  margin-top: var(--space-2);
  font-size: var(--md-sys-typescale-body-small-size);
  color: var(--md-sys-color-on-surface);
}

md-text-button {
  --md-text-button-label-text-color: var(--md-sys-color-primary);
}


/* ─────────────────────────────────────────────────────────────────────
   SCROLLBARS (thin, themed)
   ───────────────────────────────────────────────────────────────────── */
::-webkit-scrollbar             { width: 6px; height: 6px; }
::-webkit-scrollbar-track       { background: transparent; }
::-webkit-scrollbar-thumb       {
  background: var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--md-sys-color-outline);
}

* { scrollbar-width: thin; scrollbar-color: var(--md-sys-color-outline-variant) transparent; }


/* ─────────────────────────────────────────────────────────────────────
   FOCUS RING — Global (accessibility: never suppress)
   ───────────────────────────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}
:focus:not(:focus-visible) {
  outline: none;
}


/* ─────────────────────────────────────────────────────────────────────
   LOADING STATE
   ───────────────────────────────────────────────────────────────────── */
.content-loading {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-medium-size);
  padding: var(--space-8) 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--md-sys-color-outline-variant);
  border-top-color: var(--md-sys-color-primary);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
  flex-shrink: 0;
}

/* ─────────────────────────────────────────────────────────────────────
   SIDEBAR NAVIGATION OVERRIDES
   ───────────────────────────────────────────────────────────────────── */
md-list-item.active {
  background: var(--md-sys-color-secondary-container);
  border-radius: var(--md-sys-shape-corner-medium);
  --md-list-item-label-text-color: var(--md-sys-color-on-secondary-container);
  --md-list-item-hover-state-layer-color: transparent;
}