/* ============================================================
   Avail Design System — DA Explorer Implementation
   Matching tokens from docs.availproject.org
   ============================================================ */

/* ---- Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&family=Geist:wght@300;400;500;600;700&display=swap');

@font-face {
  font-family: 'Delight';
  src: url('assets/fonts/Delight/Web-TT/Delight-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Delight';
  src: url('assets/fonts/Delight/Web-TT/Delight-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ============================================================
   CSS Custom Properties — Design Tokens
   Full token reference from docs.availproject.org
   ============================================================ */
:root {
  /* ---- Spacing ---- */
  --spacing: 0.25rem;

  /* ---- Blue palette ---- */
  --avail-blue-50:   #e6f1fe;
  --avail-blue-100:  #cee2fd;
  --avail-blue-150:  #b0d2fc;
  --avail-blue-200:  #98c3fb;
  --avail-blue-300:  #68a6f8;
  --avail-blue-400:  #3187f6;
  --avail-blue-500:  #0a6beb;
  --avail-blue-600:  #25599d;
  --avail-blue-700:  #2c4668;
  --avail-blue-800:  #002a61;
  --avail-blue-850:  #001f47;
  --avail-blue-900:  #00040f;
  --avail-blue-950:  #00030a;

  /* ---- Grey — light theme ---- */
  --avail-grey-l-100:  #f0f0ef;
  --avail-grey-l-200:  #e9e9e8;
  --avail-grey-l-300:  #e1e1e0;
  --avail-grey-l-400:  #e9e9e8;
  --avail-grey-l-500:  #c2c2c1;
  --avail-grey-l-600:  #9f9f9d;
  --avail-grey-l-700:  #858585;
  --avail-grey-l-800:  #737373;
  --avail-grey-l-900:  #5a5a58;
  --avail-grey-l-1000: #151514;

  /* ---- Grey — dark theme ---- */
  --avail-grey-d-100:  #1b1b18;
  --avail-grey-d-200:  #1f1f1e;
  --avail-grey-d-300:  #292928;
  --avail-grey-d-400:  #2e2e2d;
  --avail-grey-d-500:  #464644;
  --avail-grey-d-600:  #878787;
  --avail-grey-d-700:  #8f8f8f;
  --avail-grey-d-800:  #7d7d7d;
  --avail-grey-d-900:  #a2a2a0;
  --avail-grey-d-1000: #eeeeed;

  /* ---- White / Black ---- */
  --avail-white:    #ffffff;
  --avail-white-50: #f8f8f7;
  --avail-black-0:   #1f1f1e;
  --avail-black-50:  #151514;

  /* ---- Semantic colours ---- */
  --avail-red-50:    #fbe9e9;
  --avail-red-100:   #f6d5d5;
  --avail-red-500:   #cf2a2a;
  --avail-red-800:   #561010;
  --avail-green-50:  #e9fbf0;
  --avail-green-100: #d4f7e0;
  --avail-green-500: #25d061;
  --avail-green-800: #0c5525;
  --avail-amber-50:  #fef1c8;
  --avail-amber-800: #72512c;

  /* ---- Typography ---- */
  --font-sans:   'Inter', 'Geist', system-ui, sans-serif;
  --font-serif:  'Delight', 'Inter', 'Geist', system-ui, sans-serif;
  --font-mono:   'JetBrains Mono', 'Geist Mono', 'Fira Code', monospace;

  /* Font size scale */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;

  /* Font weight scale */
  --font-light:    300;
  --font-normal:   400;
  --font-medium:   500;
  --font-semibold: 600;
  --font-bold:     700;

  /* Line height scale */
  --leading-tight:   1.25;
  --leading-normal:   1.5;
  --leading-relaxed:  1.625;

  /* Letter spacing */
  --tracking-tight:  -0.025em;
  --tracking-normal:  0;
  --tracking-wide:    0.025em;
  --tracking-wider:   0.05em;
  --tracking-widest:  0.1em;

  /* Border radius scale */
  --radius-none: 0;
  --radius-xs:   0.125rem;
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  /* Header */
  --header-height: 72px;

  /* ============================================================
     Resolved semantic tokens — LIGHT MODE (default)
     ============================================================ */

  /* Core */
  --background:       var(--avail-white);
  --foreground:       var(--avail-grey-l-1000);
  --muted:            var(--avail-grey-l-100);
  --muted-foreground: var(--avail-grey-l-700);

  /* Borders */
  --border-color:    var(--avail-grey-l-200);
  --input-border:    var(--avail-grey-l-200);
  --ring-color:       var(--avail-blue-500);

  /* Brand / Primary */
  --brand:            var(--avail-blue-500);
  --brand-foreground: var(--avail-white);
  --primary:         var(--avail-blue-500);
  --primary-foreground: var(--avail-white);
  --accent:           var(--avail-blue-50);
  --accent-foreground: var(--avail-blue-500);

  /* Destructive */
  --destructive:      var(--avail-red-500);

  /* Cards */
  --card-bg:          var(--avail-white);
  --card-border:      var(--avail-grey-l-200);
  --card-shadow:      var(--avail-blue-50);
  --card-header-bg:   var(--avail-white-50);
  --card-foreground:  var(--avail-grey-l-1000);

  /* Surfaces */
  --surface:          var(--avail-white-50);
  --surface-foreground: var(--avail-grey-l-1000);

  /* Nav / sidebar */
  --navbar-bg:        var(--avail-white-50);
  --navbar-border:    var(--avail-grey-l-200);
  --sidebar-bg:       var(--avail-white);
  --sidebar-border:   var(--avail-grey-l-200);
  --sidebar-item-bg:  transparent;
  --sidebar-item-bg-hover: var(--avail-grey-l-100);
  --sidebar-item-fg:  var(--avail-grey-l-700);
  --sidebar-item-fg-active: var(--avail-grey-l-1000);

  /* Search */
  --search-bg:        var(--avail-white);
  --search-border:    var(--avail-grey-l-200);
  --search-fg:        var(--avail-grey-l-700);

  /* Links */
  --link-fg:          var(--avail-blue-500);
  --link-underline:   transparent;
  --link-underline-hover: var(--avail-blue-500);

  /* Keyboard shortcuts */
  --key-bg:           var(--avail-grey-l-100);
  --key-bg-hover:     var(--avail-grey-l-200);
  --key-bg-active:    var(--avail-grey-l-300);
  --key-fg:           var(--avail-grey-l-700);
  --key-underline:    var(--avail-grey-l-200);

  /* Hero */
  --hero-glow:        var(--avail-white);

  /* Selection */
  --selection:        var(--avail-grey-l-1000);
  --selection-fg:     var(--avail-white);

  /* Dot grid pattern (SVG data URL) */
  --dot-pattern: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='10' cy='10' r='1' fill='%230a6beb' fill-opacity='0.12'/%3E%3C/svg%3E");

  /* Shadows */
  --shadow-xs:  0px 1px  2px  0px #0000001a;
  --shadow-sm:  0px 1px  4px  0px #5555550d;
  --shadow-md:  0px 1px 12px  0px #5b5b5b0d;
  --shadow-lg:  0px 4px 24px  0px #5b5b5b14;

  /* Transitions */
  --transition-duration: 0.15s;
  --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-card: cubic-bezier(0.165, 0.84, 0.44, 1);
}

/* ============================================================
   Dark mode
   ============================================================ */
.dark {
  /* Core */
  --background:       var(--avail-black-50);
  --foreground:       var(--avail-grey-d-1000);
  --muted:            var(--avail-grey-d-200);
  --muted-foreground: var(--avail-grey-d-700);

  /* Borders */
  --border-color:    var(--avail-grey-d-400);
  --input-border:    var(--avail-grey-d-400);
  --ring-color:       var(--avail-grey-d-1000);

  /* Brand / Primary */
  --brand:            var(--avail-grey-d-1000);
  --brand-foreground: var(--avail-black-50);
  --primary:         var(--avail-grey-d-1000);
  --primary-foreground: var(--avail-black-50);
  --accent:           var(--avail-grey-d-300);
  --accent-foreground: var(--avail-grey-d-1000);

  /* Cards */
  --card-bg:          var(--avail-grey-d-200);
  --card-border:      var(--avail-grey-d-400);
  --card-shadow:      var(--avail-grey-d-400);
  --card-header-bg:   var(--avail-grey-d-300);
  --card-foreground:  var(--avail-grey-d-1000);

  /* Surfaces */
  --surface:          var(--avail-grey-d-200);
  --surface-foreground: var(--avail-grey-d-1000);

  /* Nav / sidebar */
  --navbar-bg:        var(--avail-black-50);
  --navbar-border:    var(--avail-grey-d-400);
  --sidebar-bg:       var(--avail-grey-d-200);
  --sidebar-border:   var(--avail-grey-d-400);
  --sidebar-item-bg:  transparent;
  --sidebar-item-bg-hover: var(--avail-grey-d-300);
  --sidebar-item-fg:  var(--avail-grey-d-700);
  --sidebar-item-fg-active: var(--avail-grey-d-1000);

  /* Search */
  --search-bg:        var(--avail-grey-d-200);
  --search-border:    var(--avail-grey-d-400);
  --search-fg:        var(--avail-grey-d-700);

  /* Links */
  --link-fg:          var(--avail-blue-300);
  --link-underline:   transparent;
  --link-underline-hover: var(--avail-blue-300);

  /* Keyboard shortcuts */
  --key-bg:           var(--avail-grey-d-300);
  --key-bg-hover:     var(--avail-grey-d-400);
  --key-bg-active:    var(--avail-grey-d-500);
  --key-fg:           var(--avail-grey-d-700);
  --key-underline:    var(--avail-grey-d-400);

  /* Hero */
  --hero-glow:        var(--avail-black-50);

  /* Selection */
  --selection:        var(--avail-grey-d-1000);
  --selection-fg:     var(--avail-black-50);

  /* Dot grid pattern */
  --dot-pattern: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='10' cy='10' r='1' fill='%23878787' fill-opacity='0.15'/%3E%3C/svg%3E");

  /* Shadows */
  --shadow-xs:  0px 1px  2px  0px #0000001a;
  --shadow-sm:  0px 1px  4px  0px #00000026;
  --shadow-md:  0px 1px 12px  0px #00000026;
  --shadow-lg:  0px 4px 24px  0px #0003;
}

/* ============================================================
   Base reset
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--surface);
  color: var(--foreground);
  line-height: var(--leading-normal);
  min-height: 100vh;
}

::selection {
  background-color: var(--selection);
  color: var(--selection-fg);
}

/* Halftone canvas - behind content inside the card */
.inner-grid-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

a {
  color: var(--link-fg);
  text-decoration: none;
  transition: color var(--transition-duration) var(--transition-timing);
}
a:hover { text-decoration: underline; text-underline-offset: 2px; }

img { display: block; max-width: 100%; }

/* ============================================================
   Skip to content (Accessibility)
   ============================================================ */
.skip-to-content {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  color: var(--foreground);
  background: var(--background);
  z-index: 100;
}
.skip-to-content:focus {
  position: fixed;
  padding: 1rem;
  margin: 0;
  clip: auto;
  width: auto;
  height: auto;
  overflow: visible;
  white-space: normal;
  border: 2px solid var(--brand);
  inset: 0;
  text-align: center;
}

/* ============================================================
   Layout helpers
   ============================================================ */
.container {
  width: 100%;
  max-width: 938px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   Focus visible
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  background-color: var(--navbar-bg);
  border-bottom: 1px solid var(--border-color);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 24px;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--foreground);
}
.site-header__brand:hover { text-decoration: none; }
.site-header__brand .brand-logo { width: 32px; height: 32px; }

/* Brand logo colors */
.brand-logo .logo-blue { fill: #0473FF; }
.dark .brand-logo .logo-blue { fill: #888; }

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.site-header__brand-name {
  font-family: var(--font-serif);
  font-weight: var(--font-medium);
  font-size: 1.125rem;
  color: var(--foreground);
}
.site-header__brand-sub {
  font-size: var(--text-xs);
  color: var(--muted-foreground);
}

.site-header__nav {
  display: none;
  gap: 24px;
  align-items: center;
}
@media (min-width: 768px) {
  .site-header__nav { display: flex; }
}

.site-header__nav a {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--muted-foreground);
  transition: color var(--transition-duration) var(--transition-timing);
}
.site-header__nav a:hover { opacity: 1; color: var(--foreground); text-decoration: none; }
.site-header__nav a.is-active { color: var(--brand); }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ============================================================
   Icon buttons
   ============================================================ */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  width: 40px;
  border: 1px solid var(--search-border);
  border-radius: var(--radius-md);
  background-color: var(--search-bg);
  color: var(--search-fg);
  cursor: pointer;
  transition: all var(--transition-duration) var(--transition-timing);
}
.icon-btn:hover {
  opacity: 0.85;
  color: var(--foreground);
}
.icon-btn svg {
  width: 20px;
  height: 20px;
}

/* ============================================================
   Search bar
   ============================================================ */
.search-bar {
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 12px;
  gap: 8px;
  border: 1px solid var(--search-border);
  border-radius: var(--radius-md);
  background-color: var(--search-bg);
  color: var(--search-fg);
  font-size: var(--text-sm);
  width: 200px;
  transition: all 0.2s var(--ease-out);
  cursor: text;
}
.search-bar:hover {
  background-color: var(--muted);
  color: var(--foreground);
}
.search-bar:focus-within {
  outline: 2px solid var(--brand);
  outline-offset: -1px;
  background-color: var(--muted);
  color: var(--foreground);
  border-color: var(--brand);
}
.search-bar svg { flex-shrink: 0; }

.search-kbd {
  display: inline-flex;
  align-items: center;
  height: 20px;
  padding: 0 5px;
  border: 1px solid var(--border-color);
  border-bottom: 2px solid var(--key-underline);
  background-color: var(--key-bg);
  color: var(--key-fg);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  border-radius: var(--radius-sm);
}

/* ============================================================
   Main layout
   ============================================================ */
.site-main {
  flex: 1;
}

/* Outer container */
.outer-container {
  background-color: var(--surface);
  padding: 32px 24px;
  position: relative;
  z-index: 1;
}

/* Inner container */
.inner-container {
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: 0;
  background-color: var(--avail-white);
  z-index: 1;
}

.dark .inner-container {
  background-color: var(--avail-black-0);
}

/* Content sits above the animated grid */
.inner-content {
  position: relative;
  z-index: 1;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  text-align: center;
  padding: 40px 24px 32px;
  position: relative;
}

.hero__title {
  font-family: var(--font-serif);
  font-weight: var(--font-medium);
  font-size: var(--text-4xl);
  color: var(--brand);
  margin-bottom: 8px;
  line-height: var(--leading-tight);
  letter-spacing: 0.02em;
  position: relative;
}

/* Hero glow effect */
.hero__title::before {
  content: '';
  position: absolute;
  border-radius: var(--radius-full);
  background: radial-gradient(
    ellipse 100% 100% at 50% 50%,
    var(--hero-glow) 0%,
    var(--hero-glow) 20%,
    transparent 70%
  );
  inset: -20% -15%;
  opacity: 0.5;
  pointer-events: none;
  z-index: -1;
}

.hero__subtitle {
  font-size: var(--text-base);
  color: var(--muted-foreground);
  margin-bottom: 12px;
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

.hero__status-text {
  color: var(--avail-blue-500);
}

.dark .hero__status-text {
  color: #888;
}

.hero__status .status-icon {
  width: 16px;
  height: 16px;
  animation: heartbeat 1.5s ease-in-out infinite;
}

.footer-icon {
  display: inline-block;
  vertical-align: middle;
  margin-right: 6px;
  width: 16px;
  height: 16px;
}

.footer-icon .icon-gray { fill: #606060; }
.dark .footer-icon .icon-gray { fill: #888; }

@keyframes heartbeat {
  0%   { transform: scale(1); }
  14%  { transform: scale(1.3); }
  28%  { transform: scale(1); }
  42%  { transform: scale(1.3); }
  70%  { transform: scale(1); }
}

/* ============================================================
   Stats dashboard
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--border-color);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 8-card variant: ensure bottom border on row 1 */
.stats-grid--8 {
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 768px) {
  .stats-grid--8 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  padding: 24px;
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--card-bg);
  transition: box-shadow 0.2s var(--ease-out);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.stat-card:hover { box-shadow: var(--shadow-md); }

/* Remove right border from last in row */
.stat-card:nth-child(2n) { border-right: none; }
@media (min-width: 768px) {
  .stat-card:nth-child(2n) { border-right: 1px solid var(--border-color); }
  .stat-card:nth-child(4n) { border-right: none; }
}
.stat-card:last-child { border-right: none; }

/* 8-card grid: row 1 cards keep bottom border, row 2 cards lose it */
@media (min-width: 768px) {
  .stats-grid--8 .stat-card { border-bottom: none; }
  .stats-grid--8 .stat-card:nth-child(-n+4) { border-bottom: 1px solid var(--border-color); }
}
@media (max-width: 767px) {
  .stats-grid--8 .stat-card { border-bottom: 1px solid var(--border-color); }
  .stats-grid--8 .stat-card:nth-last-child(-n+2) { border-bottom: none; }
}

.stat-card__inner {
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-card__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
}
.stat-card__icon .stat-icon { width: 100%; height: 100%; }

/* Icon colors - light mode */
.stat-icon .icon-blue { fill: #3B82F6; }
.stat-icon .icon-shadow { fill: #c5cdd8; }

.da-metric__icon .icon-blue { fill: #3B82F6; }
.da-metric__icon .icon-shadow { fill: #c5cdd8; }

.status-icon .icon-blue { fill: #3B82F6; }
.status-icon .icon-shadow { fill: #c5cdd8; }

/* Icon colors - dark mode */
.dark .stat-icon .icon-blue { fill: #888; }
.dark .stat-icon .icon-shadow { fill: transparent; }

.dark .da-metric__icon .icon-blue { fill: #888; }
.dark .da-metric__icon .icon-shadow { fill: transparent; }

.dark .status-icon .icon-blue { fill: #888; }
.dark .status-icon .icon-shadow { fill: transparent; }

.stat-card__content {
  flex: 1;
  min-width: 0;
}

.stat-card__label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--muted-foreground);
  margin-bottom: 4px;
}

.stat-card__value {
  font-family: var(--font-serif);
  font-weight: var(--font-bold);
  font-size: 1.5rem;
  color: var(--foreground);
  line-height: 1.1;
  font-feature-settings: 'tnum';
  font-variant-numeric: tabular-nums;
}

.stat-card__trend {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  margin-top: 4px;
  color: var(--avail-green-500);
}
.stat-card__trend.is-down { color: var(--avail-red-500); }

/* DA-specific: small stat for sub-values */
.stat-card__detail {
  font-size: var(--text-xs);
  color: var(--muted-foreground);
  margin-top: 2px;
}

/* ============================================================
   Content grid
   ============================================================ */
.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 24px;
  border-top: 1px solid var(--border-color);
}

@media (min-width: 768px) {
  .content-grid { grid-template-columns: 1fr 1fr; }
}

/* Full-width variant for single column */
.content-grid--full {
  grid-template-columns: 1fr;
}

/* ============================================================
   Section card (with hover glow overlay)
   ============================================================ */
.section-card {
  position: relative;
  border: 1px solid var(--border-color);
  background-color: var(--card-bg);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s var(--ease-out);
}
.section-card:hover { box-shadow: var(--shadow-md); }

/* Card hover glow overlay */
.section-card::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid transparent;
  background-color: var(--card-shadow);
  opacity: 0;
  transition: opacity 0.2s var(--ease-out);
  z-index: 1;
}
.section-card:has(.section-card__header:hover)::after {
  opacity: 1;
  border-color: color-mix(in oklab, var(--brand) 20%, transparent);
}
.section-card:has(.section-card__header:hover) {
  transform: translate(-1px, -1px);
}
.section-card:has(.section-card__header:active) {
  transform: translate(-0.5px, -0.5px);
}

.section-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--card-border);
  background-color: var(--card-header-bg);
  position: relative;
  z-index: 2;
}

.section-card__title-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-card__title-art {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.section-card__title {
  font-family: var(--font-serif);
  font-weight: var(--font-medium);
  font-size: var(--text-base);
  color: var(--foreground);
  margin: 0;
  letter-spacing: 0.02em;
}

.section-card__action {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--brand);
  cursor: pointer;
  transition: opacity var(--transition-duration) var(--transition-timing);
  background: none;
  border: none;
  padding: 0;
}
.section-card__action:hover { opacity: 0.75; }
.section-card__action svg { width: 14px; height: 14px; }

/* ============================================================
   Data rows (blocks, extrinsics, events)
   ============================================================ */
.data-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--card-border);
  cursor: pointer;
  transition: background-color var(--transition-duration) var(--transition-timing);
  position: relative;
  z-index: 2;
}
.data-row:last-child { border-bottom: none; }
.data-row:hover { background-color: var(--muted); }
.data-row.is-new { background-color: var(--card-shadow); }
.data-row.is-new:hover { background-color: var(--muted); }

.data-row__left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  min-width: 0;
}

.data-row__block-num {
  font-family: var(--font-mono);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  color: var(--foreground);
  flex-shrink: 0;
  font-feature-settings: 'tnum';
  font-variant-numeric: tabular-nums;
}

.data-row__hash {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted-foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.data-row__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
  margin-left: 16px;
  font-size: var(--text-xs);
  color: var(--muted-foreground);
}
.data-row__meta span { white-space: nowrap; }

.badge-new {
  display: inline-block;
  padding: 2px 6px;
  font-size: 0.625rem;
  font-weight: var(--font-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background-color: var(--card-shadow);
  color: var(--brand);
  border-radius: var(--radius-sm);
  margin-left: 4px;
}

/* ============================================================
   Status badges
   ============================================================ */
.status-badge {
  display: inline-block;
  padding: 4px 8px;
  font-size: 0.6875rem;
  font-weight: var(--font-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
}
.status-badge--success {
  background-color: var(--avail-green-50);
  color: var(--avail-green-800);
}
.status-badge--failed {
  background-color: var(--avail-red-50);
  color: var(--avail-red-500);
}
.status-badge--pending {
  background-color: #fef1c8;
  color: #72512c;
}
/* Dark mode badge overrides */
.dark .status-badge--success {
  background-color: var(--avail-green-500);
  color: var(--avail-white);
}
.dark .status-badge--failed {
  background-color: var(--avail-red-500);
  color: var(--avail-white);
}
.dark .status-badge--pending {
  background-color: #72512c;
  color: #fef1c8;
}

/* ============================================================
   Data table
   ============================================================ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.data-table th {
  text-align: left;
  padding: 10px 24px;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  border-bottom: 1px solid var(--card-border);
  background-color: var(--card-header-bg);
}
.data-table td {
  padding: 12px 24px;
  border-bottom: 1px solid var(--card-border);
  color: var(--foreground);
}
.data-table tr:last-child td {
  border-bottom: none;
}
.data-table tr:hover td {
  background-color: var(--muted);
}
.data-table__mono {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}
.data-table__num {
  font-family: var(--font-serif);
  font-weight: var(--font-bold);
  font-feature-settings: 'tnum';
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   Empty state
   ============================================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
}

.empty-state__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border: 1px solid var(--card-border);
  background-color: var(--muted);
  color: var(--muted-foreground);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
}
.empty-state__icon svg { width: 28px; height: 28px; }

.empty-state__title {
  font-family: var(--font-serif);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
  color: var(--foreground);
  margin-bottom: 8px;
}

.empty-state__body {
  font-size: var(--text-sm);
  color: var(--muted-foreground);
  max-width: 280px;
}

/* ============================================================
   DA Metrics bar (new for DA Explorer)
   ============================================================ */
.da-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background-color: var(--border-color);
  border: 1px solid var(--border-color);
}

@media (max-width: 600px) {
  .da-metrics {
    grid-template-columns: 1fr;
  }
}

.da-metric {
  padding: 20px 24px;
  background-color: var(--card-bg);
  text-align: center;
  display: flex;
  align-items: center;
  gap: 16px;
}
.da-metric:hover {
  background-color: var(--muted);
}

.da-metric__icon-wrap {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
}

.da-metric__icon {
  width: 100%;
  height: 100%;
}

.da-metric__text {
  flex: 1;
  min-width: 0;
  text-align: left;
}

.da-metric__label {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--muted-foreground);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.da-metric__value {
  font-family: var(--font-serif);
  font-weight: var(--font-bold);
  font-size: var(--text-2xl);
  color: var(--foreground);
  font-feature-settings: 'tnum';
  font-variant-numeric: tabular-nums;
}

.da-metric__sub {
  font-size: var(--text-xs);
  color: var(--muted-foreground);
  margin-top: 2px;
}

/* ============================================================
   Summary bar (horizontal strip of key-value cards)
   ============================================================ */
.summary-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background-color: var(--border-color);
  border: 1px solid var(--border-color);
}

.summary-item {
  flex: 1 1 auto;
  min-width: 160px;
  padding: 12px 20px;
  background-color: var(--card-bg);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.summary-item__label {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--muted-foreground);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

.summary-item__value {
  font-family: var(--font-serif);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
  color: var(--foreground);
  font-feature-settings: 'tnum';
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background-color: var(--surface);
  padding: 0 24px;
  width: 100%;
  z-index: 1;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: 0 24px;
  position: relative;
}

/* Status on left */
.site-footer__status {
  position: absolute;
  left: 0;
  top: 0;
}

/* Links on right */
.site-footer__links {
  position: absolute;
  right: 0;
  top: 0;
  display: flex;
  gap: 16px;
}

@media (min-width: 768px) {
  .site-footer__inner {
    flex-direction: column;
    align-items: center;
  }
}

/* Grid logo (fixed at bottom of window) */
.site-footer__grid-logo {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  width: 100%;
  opacity: 0.8;
  transition: opacity var(--transition-duration) var(--transition-timing);
  z-index: 0;
}
.site-footer__grid-logo img {
  width: 614px;
  height: 150px;
  max-width: 100%;
}
.site-footer__grid-logo:hover {
  opacity: 1;
}
.dark .site-footer__grid-logo {
  opacity: 0.1;
}
.dark .site-footer__grid-logo:hover {
  opacity: 0.2;
}

.site-footer__copyright {
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.site-footer__links a {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}
.site-footer__links a svg { width: 16px; height: 16px; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-duration) var(--transition-timing);
  border: none;
  gap: 8px;
}
.btn--primary {
  background-color: var(--brand);
  color: var(--brand-foreground);
}
.btn--primary:hover { opacity: 0.9; }
.btn--primary:active { transform: scale(0.98); }

.btn--secondary {
  background-color: var(--muted);
  color: var(--foreground);
  border: 1px solid var(--border-color);
}
.btn--secondary:hover { background-color: var(--card-border); }

.btn--ghost {
  background-color: transparent;
  color: var(--muted-foreground);
}
.btn--ghost:hover { color: var(--foreground); background-color: var(--muted); }

/* ============================================================
   Mobile navigation
   ============================================================ */
.mobile-menu-toggle {
  display: flex;
}
@media (min-width: 768px) {
  .mobile-menu-toggle { display: none; }
}

.mobile-nav {
  display: none;
  border-bottom: 1px solid var(--navbar-border);
  background-color: var(--navbar-bg);
  padding: 0 24px 16px;
}
.mobile-nav.mobile-nav--open { display: block; }

.mobile-nav__inner {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav__link {
  display: block;
  padding: 10px 16px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--muted-foreground);
  border-radius: var(--radius-md);
  transition: all var(--transition-duration) var(--transition-timing);
  text-decoration: none;
}
.mobile-nav__link:hover {
  background-color: var(--muted);
  color: var(--foreground);
  text-decoration: none;
}
.mobile-nav__link.is-active {
  color: var(--brand);
  background-color: var(--accent);
}

@media (min-width: 768px) {
  .mobile-nav { display: none !important; }
}

/* ============================================================
   Utilities
   ============================================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   Dot grid pattern (non-canvas fallback)
   ============================================================ */
.dot-grid {
  position: absolute;
  inset: 0;
  background-image: var(--dot-pattern);
  background-repeat: repeat;
  pointer-events: none;
  z-index: 0;
}