:root {
  --bg: #07070f;
  --bg-2: #0e0e1a;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --text: #e8e8f0;
  --text-muted: rgba(232, 232, 240, 0.45);
  --text-dim: rgba(232, 232, 240, 0.25);

  --wikipedia: #3B82F6;
  --wikipedia-glow: rgba(59, 130, 246, 0.15);
  --hackernews: #F97316;
  --hackernews-glow: rgba(249, 115, 22, 0.15);
  --polymarket: #8B5CF6;
  --polymarket-glow: rgba(139, 92, 246, 0.15);

  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 16px;
  --radius-sm: 10px;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

/* Dot-grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

/* Ambient color blobs */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 400px at 15% 20%, rgba(59,130,246,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 500px 350px at 85% 70%, rgba(139,92,246,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ─── HEADER ─────────────────────────────────────────── */
header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  background: rgba(7, 7, 15, 0.8);
  position: sticky;
  top: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-icon {
  font-size: 1.4rem;
}

.logo-text {
  background: linear-gradient(135deg, #fff 30%, rgba(255,255,255,0.5));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.live-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 6px #22c55e;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 6px #22c55e; }
  50% { opacity: 0.5; box-shadow: 0 0 12px #22c55e; }
}

/* ─── MAIN CONTENT ───────────────────────────────────── */
main {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* ─── PULSE SUMMARY ──────────────────────────────────── */
.pulse-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 32px;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.pulse-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
}

.pulse-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.pulse-summary {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pulse-sentence {
  display: block;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text);
  font-weight: 400;
  padding-left: 14px;
  border-left: 2px solid rgba(255,255,255,0.08);
  animation: fadeIn 0.4s ease both;
  transition: border-color 0.2s;
}

.pulse-sentence:first-child {
  font-size: 1.02rem;
  font-weight: 500;
  border-left-color: rgba(255,255,255,0.2);
}

.pulse-sentence:hover {
  border-left-color: rgba(255,255,255,0.25);
}

.pulse-sentence.loading {
  color: var(--text-muted);
  font-style: italic;
  border-left-color: transparent;
}

.themes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.theme-chip {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ─── COLUMNS ────────────────────────────────────────── */
.columns {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* ─── SOURCE COLUMN ──────────────────────────────────── */
.column {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  backdrop-filter: blur(20px);
  transition: border-color 0.2s;
  display: flex;
  flex-direction: column;
}

.column-header {
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.column-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.column-icon {
  font-size: 1rem;
}

.source-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.column-description {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* Source accent colors */
.column[data-source="wikipedia"] .column-header {
  border-bottom-color: var(--wikipedia-glow);
}
.column[data-source="wikipedia"] .column-title { color: var(--wikipedia); }
.column[data-source="wikipedia"] .source-dot { background: var(--wikipedia); box-shadow: 0 0 6px var(--wikipedia); }

.column[data-source="hackernews"] .column-header {
  border-bottom-color: var(--hackernews-glow);
}
.column[data-source="hackernews"] .column-title { color: var(--hackernews); }
.column[data-source="hackernews"] .source-dot { background: var(--hackernews); box-shadow: 0 0 6px var(--hackernews); }

.column[data-source="polymarket"] .column-header {
  border-bottom-color: var(--polymarket-glow);
}
.column[data-source="polymarket"] .column-title { color: var(--polymarket); }
.column[data-source="polymarket"] .source-dot { background: var(--polymarket); box-shadow: 0 0 6px var(--polymarket); }

/* ─── ITEMS LIST ─────────────────────────────────────── */
.items-list {
  list-style: none;
  flex: 1;
}

.item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
  animation: fadeIn 0.3s ease both;
}

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

.item:hover {
  background: var(--surface-hover);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.item-rank {
  font-size: 0.7rem;
  font-family: var(--mono);
  color: var(--text-dim);
  min-width: 18px;
  margin-top: 3px;
  text-align: right;
  flex-shrink: 0;
}

.item-content {
  flex: 1;
  min-width: 0;
}

.item-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  display: block;
  line-height: 1.4;
  transition: color 0.15s;
}

.item-title:hover { color: #fff; }

.item-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 5px;
}

.item-score {
  font-size: 0.7rem;
  font-family: var(--mono);
  color: var(--text-dim);
}

/* Probability bar (Polymarket) */
.prob-bar-wrap {
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.prob-bar {
  flex: 1;
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  overflow: hidden;
}

.prob-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #8B5CF6, #a78bfa);
  transition: width 0.6s ease;
}

.prob-label {
  font-size: 0.7rem;
  font-family: var(--mono);
  font-weight: 600;
  color: #a78bfa;
  min-width: 36px;
  text-align: right;
}

/* ─── SKELETON LOADERS ───────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-item {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.skeleton-line {
  height: 12px;
}

.skeleton-line.short { width: 45%; }
.skeleton-line.long  { width: 85%; }

/* ─── FOOTER ─────────────────────────────────────────── */
.status-bar {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 20px;
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--mono);
  letter-spacing: 0.03em;
}

/* ─── RESPONSIVE ─────────────────────────────────────── */
@media (max-width: 768px) {
  header { padding: 16px 20px; }
  main { padding: 20px 16px 48px; }
  .pulse-card { padding: 20px; }
  .columns { grid-template-columns: 1fr; gap: 16px; }
}