/* AtlasPI Compare — v6.18 */
/* Dark theme matching AtlasPI (#0d1117, #161b22, #58a6ff accent) */

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

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #58a6ff;
  --accent-dim: rgba(88,166,255,.15);
  --red: #f85149;
  --orange: #d29922;
  --green: #3fb950;
  --purple: #bc8cff;
  --pink: #f778ba;
  --cyan: #76e3ea;
  --yellow: #e3b341;

  --clr-empire: #f85149;
  --clr-kingdom: #58a6ff;
  --clr-republic: #3fb950;
  --clr-dynasty: #bc8cff;
  --clr-caliphate: #d29922;
  --clr-sultanate: #e3b341;
  --clr-confederation: #76e3ea;
  --clr-city_state: #f778ba;
  --clr-colonial: #ff7b72;
  --clr-other: #8b949e;

  /* Entity comparison palette (up to 4 distinct) */
  --ent-1: #58a6ff;
  --ent-2: #f85149;
  --ent-3: #3fb950;
  --ent-4: #bc8cff;

  --header-h: 56px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

html, body {
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── HEADER ─────────────────────────────────────── */

.cp-header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.cp-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.cp-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
}
.cp-logo strong { color: var(--accent); }

.cp-title {
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cp-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cp-nav-link {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background .15s, color .15s;
}
.cp-nav-link:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  text-decoration: none;
}

/* ── SELECTOR ───────────────────────────────────── */

.cp-selector {
  max-width: 960px;
  margin: 24px auto;
  padding: 0 16px;
}

.cp-selector-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.cp-selector-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.cp-search-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.cp-search-wrap {
  flex: 1;
  position: relative;
}

.cp-search-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.cp-search-input:focus {
  border-color: var(--accent);
}
.cp-search-input::placeholder {
  color: var(--text-muted);
}

.cp-autocomplete {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  max-height: 240px;
  overflow-y: auto;
  z-index: 50;
  display: none;
}
.cp-autocomplete.active { display: block; }

.cp-ac-item {
  padding: 10px 14px;
  cursor: pointer;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cp-ac-item:last-child { border-bottom: none; }
.cp-ac-item:hover, .cp-ac-item.highlighted {
  background: var(--bg-tertiary);
}
.cp-ac-item-name { color: var(--text-primary); }
.cp-ac-item-meta {
  font-size: 11px;
  color: var(--text-muted);
}

.cp-compare-btn {
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity .15s;
  white-space: nowrap;
}
.cp-compare-btn:hover { opacity: .85; }
.cp-compare-btn:disabled {
  opacity: .4;
  cursor: not-allowed;
}

/* Selected chips */
.cp-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  min-height: 32px;
}

.cp-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid;
}
.cp-chip-remove {
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  opacity: .6;
}
.cp-chip-remove:hover { opacity: 1; }

.cp-chip[data-idx="0"] { background: rgba(88,166,255,.15); border-color: var(--ent-1); color: var(--ent-1); }
.cp-chip[data-idx="1"] { background: rgba(248,81,73,.15); border-color: var(--ent-2); color: var(--ent-2); }
.cp-chip[data-idx="2"] { background: rgba(63,185,80,.15); border-color: var(--ent-3); color: var(--ent-3); }
.cp-chip[data-idx="3"] { background: rgba(188,140,255,.15); border-color: var(--ent-4); color: var(--ent-4); }

/* Presets */
.cp-presets {
  margin-top: 16px;
}
.cp-presets-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 8px;
}
.cp-preset-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.cp-preset-btn {
  padding: 6px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.cp-preset-btn:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* ── RESULTS ────────────────────────────────────── */

.cp-results {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px 48px;
  display: none;
}
.cp-results.active { display: block; }

.cp-section {
  margin-bottom: 32px;
}

.cp-section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* Overview cards */
.cp-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.cp-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  border-top: 3px solid var(--accent);
}
.cp-card[data-idx="0"] { border-top-color: var(--ent-1); }
.cp-card[data-idx="1"] { border-top-color: var(--ent-2); }
.cp-card[data-idx="2"] { border-top-color: var(--ent-3); }
.cp-card[data-idx="3"] { border-top-color: var(--ent-4); }

.cp-card-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 2px;
}
.cp-card-english {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.cp-card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 13px;
  border-bottom: 1px solid rgba(48,54,61,.5);
}
.cp-card-row:last-child { border-bottom: none; }
.cp-card-label { color: var(--text-muted); }
.cp-card-value { color: var(--text-primary); font-weight: 500; }

.cp-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.cp-badge-confirmed { background: rgba(63,185,80,.15); color: var(--green); }
.cp-badge-disputed { background: rgba(248,81,73,.15); color: var(--red); }
.cp-badge-uncertain { background: rgba(210,153,34,.15); color: var(--orange); }

.cp-confidence {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.cp-confidence-bar {
  width: 50px;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}
.cp-confidence-fill {
  height: 100%;
  border-radius: 3px;
}

/* Timeline visualization */
.cp-timeline-svg {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
}

/* Events timeline */
.cp-events-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  max-height: 500px;
  overflow-y: auto;
}

.cp-event-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(48,54,61,.5);
  font-size: 13px;
}
.cp-event-item:last-child { border-bottom: none; }

.cp-event-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}

.cp-event-year {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-muted);
  min-width: 65px;
  flex-shrink: 0;
}

.cp-event-name {
  color: var(--text-primary);
  font-weight: 500;
}

.cp-event-type {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 4px;
}

.cp-event-shared {
  font-size: 11px;
  padding: 1px 6px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 8px;
  margin-left: 8px;
}

/* Chain context */
.cp-chain-row {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 12px;
}

.cp-chain-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.cp-chain-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.cp-chain-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.cp-chain-link {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  white-space: nowrap;
}

.cp-chain-link.compared {
  font-weight: 600;
}
.cp-chain-link[data-cmp-idx="0"] { background: rgba(88,166,255,.2); color: var(--ent-1); }
.cp-chain-link[data-cmp-idx="1"] { background: rgba(248,81,73,.2); color: var(--ent-2); }
.cp-chain-link[data-cmp-idx="2"] { background: rgba(63,185,80,.2); color: var(--ent-3); }
.cp-chain-link[data-cmp-idx="3"] { background: rgba(188,140,255,.2); color: var(--ent-4); }

.cp-chain-arrow {
  color: var(--text-muted);
  font-size: 12px;
}
.cp-chain-arrow.violent { color: var(--red); }

/* Data table */
.cp-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.cp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.cp-table th {
  background: var(--bg-tertiary);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.cp-table td {
  padding: 10px 14px;
  border-bottom: 1px solid rgba(48,54,61,.5);
  color: var(--text-primary);
}

.cp-table tr:last-child td { border-bottom: none; }

.cp-table .diff { background: rgba(88,166,255,.06); }

/* Overlap info */
.cp-overlap-info {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  font-size: 14px;
  margin-bottom: 16px;
}
.cp-overlap-label {
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.cp-overlap-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  margin-top: 4px;
}

/* Loading */
.cp-loading {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-muted);
  font-size: 14px;
  display: none;
}
.cp-loading.active { display: block; }

.cp-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: cpspin .8s linear infinite;
  margin: 0 auto 12px;
}
@keyframes cpspin { to { transform: rotate(360deg); } }

/* Empty state */
.cp-empty {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ── RESPONSIVE ─────────────────────────────────── */

@media (max-width: 768px) {
  .cp-header { padding: 0 12px; }
  .cp-title { display: none; }
  .cp-selector { margin: 12px auto; padding: 0 12px; }
  .cp-selector-card { padding: 16px; }
  .cp-search-row { flex-direction: column; }
  .cp-compare-btn { width: 100%; }
  .cp-cards { grid-template-columns: 1fr; }
  .cp-results { padding: 0 12px 32px; }
  .cp-chain-links { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .cp-preset-btns { flex-direction: column; }
  .cp-preset-btn { width: 100%; text-align: center; }
}