/* ═══════════════════════════════════════════════════════
   table.dotsai.cloud — Design System
   Palette: Monochrome | Type: Space Grotesk + Inter
   Grid: 8px | Philosophy: Human Minimalist
   ═══════════════════════════════════════════════════════ */

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

/* ── Tokens ── */
:root {
  /* Monochrome palette */
  --color-base: #111111;
  --color-surface: #1A1A1A;
  --color-surface-elevated: #242424;
  --color-surface-hover: #2A2A2A;
  --color-accent: #FFFFFF;
  --color-accent-hover: #E0E0E0;
  --color-accent-muted: rgba(255, 255, 255, 0.08);
  --color-text: #F5F5F5;
  --color-text-muted: #888888;
  --color-text-subtle: #555555;
  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-hover: rgba(255, 255, 255, 0.12);
  --color-danger: #FF4444;

  /* Status colors */
  --status-live: #22C55E;
  --status-live-bg: rgba(34, 197, 94, 0.12);
  --status-dev: #F59E0B;
  --status-dev-bg: rgba(245, 158, 11, 0.12);
  --status-inactive: #6B7280;
  --status-inactive-bg: rgba(107, 114, 128, 0.12);
  --status-archived: #EF4444;
  --status-archived-bg: rgba(239, 68, 68, 0.10);

  /* Typography */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  --text-display: clamp(2rem, 4vw, 3rem);
  --text-h1: clamp(1.5rem, 3vw, 2.25rem);
  --text-h2: clamp(1.125rem, 2vw, 1.5rem);
  --text-h3: clamp(1rem, 1.5vw, 1.125rem);
  --text-body: 0.9375rem;
  --text-small: 0.8125rem;
  --text-caption: 0.75rem;

  /* Spacing — 8px grid */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
}

/* ── Reset ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-base);
  min-height: 100vh;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity var(--duration-fast) var(--ease-out);
}
a:hover { opacity: 0.7; }

/* ── Film Grain ── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.02;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ── Search Bar ── */
.search-wrapper {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-base);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.search-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-h3);
  color: var(--color-text);
  white-space: nowrap;
  letter-spacing: -0.02em;
}

.search-brand span {
  color: var(--color-text-subtle);
  font-weight: 400;
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 480px;
}

.search-box input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  font-family: var(--font-body);
  font-size: var(--text-small);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out);
}

.search-box input::placeholder {
  color: var(--color-text-subtle);
}

.search-box input:focus {
  border-color: var(--color-border-hover);
  background: var(--color-surface-elevated);
}

.search-box .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-subtle);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

.search-shortcut {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-subtle);
  background: var(--color-surface-elevated);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  pointer-events: none;
}

/* ── Nav ── */
.nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav::-webkit-scrollbar { display: none; }

.nav a {
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-sm) var(--space-md);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
  opacity: 1;
}

.nav a:hover {
  color: var(--color-text);
  opacity: 1;
}

.nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ── Page Container ── */
.page {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

/* ── Page Header ── */
.page-header {
  margin-bottom: var(--space-xl);
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--space-xs);
}

.page-header p {
  color: var(--color-text-muted);
  font-size: var(--text-body);
  max-width: 560px;
}

.page-header .meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  font-size: var(--text-caption);
  color: var(--color-text-subtle);
  font-family: var(--font-mono);
}

.page-header .meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-text-subtle);
}

/* ── Table System ── */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  scrollbar-width: thin;
  scrollbar-color: var(--color-surface-elevated) transparent;
}

.table-container::-webkit-scrollbar {
  height: 6px;
}
.table-container::-webkit-scrollbar-track {
  background: transparent;
}
.table-container::-webkit-scrollbar-thumb {
  background: var(--color-surface-elevated);
  border-radius: 3px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-small);
  white-space: nowrap;
}

/* ── Multi-level Headers ── */
thead {
  position: sticky;
  top: 0;
  z-index: 10;
}

thead tr:first-child th {
  background: var(--color-surface-elevated);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

thead tr:nth-child(2) th {
  background: var(--color-surface);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-caption);
  color: var(--color-text-subtle);
  padding: var(--space-xs) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

/* Sortable header */
th.sortable {
  cursor: pointer;
  user-select: none;
  transition: color var(--duration-fast) var(--ease-out);
}
th.sortable:hover {
  color: var(--color-text);
}
th.sortable::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 6px;
  vertical-align: middle;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid var(--color-text-subtle);
  opacity: 0.4;
  transition: opacity var(--duration-fast), transform var(--duration-fast);
}
th.sortable:hover::after { opacity: 0.8; }
th.sort-asc::after {
  transform: rotate(180deg);
  opacity: 1;
  border-top-color: var(--color-accent);
}
th.sort-desc::after {
  opacity: 1;
  border-top-color: var(--color-accent);
}

/* ── Table Body ── */
tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background var(--duration-fast) var(--ease-out);
}

tbody tr:hover {
  background: var(--color-accent-muted);
}

tbody tr:last-child {
  border-bottom: none;
}

td {
  padding: var(--space-sm) var(--space-md);
  vertical-align: middle;
  color: var(--color-text);
}

/* Merged cell styling */
td[rowspan] {
  vertical-align: top;
  font-weight: 500;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
}

/* Category group separator */
tbody tr.group-start td {
  border-top: 2px solid var(--color-border-hover);
}

/* ── Cell Types ── */

/* Numeric — right aligned, monospace */
td.num, th.num {
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  font-variant-numeric: tabular-nums;
}

/* Name — primary identifier */
td.name {
  font-weight: 500;
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}

/* Subdomain — monospace link */
td.subdomain {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
}
td.subdomain a {
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}
td.subdomain a:hover {
  color: var(--color-accent);
  opacity: 1;
}

/* Description — wraps */
td.desc {
  white-space: normal;
  max-width: 320px;
  min-width: 200px;
  line-height: 1.5;
  color: var(--color-text-muted);
}

/* Stack chip */
td.stack {
  white-space: normal;
  max-width: 240px;
}

/* ── Status Chips ── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.chip::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.chip-live {
  color: var(--status-live);
  background: var(--status-live-bg);
}
.chip-live::before { background: var(--status-live); }

.chip-dev {
  color: var(--status-dev);
  background: var(--status-dev-bg);
}
.chip-dev::before { background: var(--status-dev); }

.chip-inactive {
  color: var(--status-inactive);
  background: var(--status-inactive-bg);
}
.chip-inactive::before { background: var(--status-inactive); }

.chip-archived {
  color: var(--status-archived);
  background: var(--status-archived-bg);
}
.chip-archived::before { background: var(--status-archived); }

/* ── Tech Tags ── */
.tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--color-text-subtle);
  background: var(--color-accent-muted);
  border-radius: var(--radius-sm);
  margin: 2px 2px;
  white-space: nowrap;
}

/* ── Cross-reference links ── */
a.ref {
  color: var(--color-text-muted);
  border-bottom: 1px dashed var(--color-text-subtle);
  font-size: var(--text-caption);
  transition: color var(--duration-fast) var(--ease-out);
}
a.ref:hover {
  color: var(--color-accent);
  opacity: 1;
}

/* ── Table Footer / Summary Row ── */
tfoot tr {
  border-top: 2px solid var(--color-border-hover);
}

tfoot td {
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  color: var(--color-text-subtle);
}

.empty-state p {
  font-size: var(--text-body);
  margin-top: var(--space-xs);
}

/* ── Search Highlight ── */
mark {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-accent);
  padding: 0 2px;
  border-radius: 2px;
}

/* ── No Results ── */
.no-results {
  display: none;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  color: var(--color-text-subtle);
  font-family: var(--font-display);
}

.no-results.visible {
  display: block;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .search-wrapper {
    padding: var(--space-xs) var(--space-sm);
    flex-wrap: wrap;
  }

  .search-brand {
    font-size: var(--text-body);
  }

  .search-box {
    max-width: 100%;
    order: 3;
    flex-basis: 100%;
  }

  .nav {
    padding: 0 var(--space-sm);
  }

  .page {
    padding: var(--space-lg) var(--space-sm);
  }

  .page-header h1 {
    font-size: var(--text-h2);
  }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ── Focus Visible ── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

input:focus-visible {
  outline: none;
}

/* ── Utility ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}