/* ── 21csim Web Viewer ── */
:root {
  --bg: #0a0a0f;
  --bg-panel: #12121a;
  --bg-card: #1a1a26;
  --bg-hover: #222233;
  --text: #d0d0d8;
  --text-dim: #808090;
  --text-bright: #f0f0ff;
  --border: #2a2a3a;
  --accent: #6080ff;

  /* Status colors */
  --status-historical: #555566;
  --status-divergence: #f0c040;
  --status-escalated: #ff4444;
  --status-prevented: #40c040;
  --status-accelerated: #40c0ff;
  --status-delayed: #6080ff;
  --status-diminished: #80c080;

  /* Verdict colors */
  --verdict-golden-age: #ffd700;
  --verdict-progress: #40c040;
  --verdict-muddling-through: #c0c040;
  --verdict-decline: #ff8040;
  --verdict-catastrophe: #ff4040;
  --verdict-extinction: #ff0000;
  --verdict-transcendence: #c040ff;
  --verdict-radically-different: #ff40ff;

  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', Menlo, Consolas, monospace;
  --font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  --bar-height: 18px;
  --transition-speed: 0.4s;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
}

/* ── Layout ── */
#app {
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  width: 100vw;
}

#top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  gap: 16px;
  min-height: 44px;
}

#top-bar .logo {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 16px;
  color: var(--accent);
  white-space: nowrap;
  cursor: pointer;
}

#run-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

#run-info .seed { color: var(--text-dim); font-size: 12px; }
#run-info .headline {
  color: var(--text-bright);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.verdict-badge {
  padding: 2px 10px;
  border-radius: 3px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

#top-bar .actions {
  display: flex;
  gap: 8px;
}

#main-area {
  display: grid;
  grid-template-columns: 1fr 320px;
  overflow: hidden;
}

/* ── Timeline Panel ── */
#timeline-panel {
  overflow-y: auto;
  padding: 16px;
  scroll-behavior: smooth;
}

#timeline-panel::-webkit-scrollbar { width: 6px; }
#timeline-panel::-webkit-scrollbar-track { background: transparent; }
#timeline-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.event-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 16px;
  margin-bottom: 8px;
  transition: border-color var(--transition-speed), opacity 0.3s;
  opacity: 0;
  transform: translateY(10px);
  animation: eventAppear 0.4s ease forwards;
}

@keyframes eventAppear {
  to { opacity: 1; transform: translateY(0); }
}

.event-card.high-impact { border-left: 3px solid var(--status-escalated); }
.event-card.historical {
  opacity: 0;
  animation: eventAppear 0.3s ease forwards;
}
.event-card.historical .event-title { color: var(--text-dim); font-weight: 400; }
.event-card.historical .event-description { color: #606070; }
.event-card:hover { border-color: var(--accent); }

.event-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.year-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  background: var(--bg);
  border-radius: 3px;
  color: var(--text-dim);
  white-space: nowrap;
  min-width: 60px;
  text-align: center;
}

.event-title {
  font-weight: 600;
  color: var(--text-bright);
  flex: 1;
}

.status-badge {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-HISTORICAL { color: var(--status-historical); border: 1px solid var(--status-historical); }
.status-DIVERGENCE { color: var(--status-divergence); border: 1px solid var(--status-divergence); }
.status-ESCALATED { color: var(--status-escalated); border: 1px solid var(--status-escalated); }
.status-PREVENTED { color: var(--status-prevented); border: 1px solid var(--status-prevented); }
.status-ACCELERATED { color: var(--status-accelerated); border: 1px solid var(--status-accelerated); }
.status-DELAYED { color: var(--status-delayed); border: 1px solid var(--status-delayed); }
.status-DIMINISHED { color: var(--status-diminished); border: 1px solid var(--status-diminished); }

.event-description {
  color: var(--text);
  margin: 4px 0;
  font-size: 12px;
}

.event-explanation {
  color: #8888aa;
  font-style: italic;
  font-size: 11px;
  margin-top: 2px;
  padding-left: 4px;
}

.event-narration {
  color: #a0a0c0;
  font-style: italic;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  min-height: 1.5em;
  padding: 8px 12px;
  background: rgba(255,255,255,0.02);
  border-left: 2px solid #333348;
  border-radius: 0 4px 4px 0;
}

.event-meta {
  display: flex;
  gap: 12px;
  margin-top: 6px;
  font-size: 10px;
  color: var(--text-dim);
}

.event-meta .domain {
  padding: 1px 4px;
  border-radius: 2px;
  background: var(--bg);
}

.event-meta .probability::before { content: "P="; }
.event-meta .confidence::before { content: "C:"; }

/* ── Year Header ── */
.year-header {
  text-align: center;
  padding: 8px 0 4px;
  margin: 12px 0 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: #555570;
  letter-spacing: 3px;
  opacity: 0;
  animation: yearAppear 0.6s ease forwards;
}

@keyframes yearAppear {
  to { opacity: 1; }
}

/* ── Era Banner ── */
.era-banner {
  text-align: center;
  padding: 30px 20px;
  margin: 24px 0;
  border-radius: 4px;
  background: linear-gradient(90deg, transparent, rgba(96,128,255,0.06), transparent);
  border-top: 1px solid #2a2a3a;
  border-bottom: 1px solid #2a2a3a;
  opacity: 0;
  animation: eraFade 3s ease forwards;
}

.era-banner .era-name {
  font-family: var(--font-ui);
  font-size: 32px;
  font-weight: 800;
  color: var(--text-bright);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.era-banner .era-range {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #555570;
  letter-spacing: 2px;
}

@keyframes eraFade {
  0% { opacity: 0; transform: scale(0.96); }
  15% { opacity: 1; transform: scale(1); }
  85% { opacity: 1; }
  100% { opacity: 0.4; }
}

/* ── Sound Toggle ── */
.sound-toggle {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  background: none;
  border: 1px solid var(--border);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}
.sound-toggle:hover { border-color: var(--accent); }

/* ── Dashboard Panel ── */
#dashboard-panel {
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  padding: 12px;
}

#dashboard-panel::-webkit-scrollbar { width: 6px; }
#dashboard-panel::-webkit-scrollbar-track { background: transparent; }
#dashboard-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.dashboard-section {
  margin-bottom: 16px;
}

.dashboard-section h3 {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

.dim-row {
  margin-bottom: 6px;
}

.dim-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  margin-bottom: 2px;
}

.dim-name { color: var(--text); }
.dim-value { color: var(--text-dim); font-variant-numeric: tabular-nums; }

.dim-bar-track {
  height: var(--bar-height);
  background: var(--bg);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.dim-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width var(--transition-speed) ease, background-color var(--transition-speed) ease;
  min-width: 2px;
}

.dim-bar-delta {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 9px;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.3s;
}

.dim-bar-delta.show { opacity: 1; }
.dim-bar-delta.positive { color: #40c040; }
.dim-bar-delta.negative { color: #ff4444; }

/* ── Bottom Controls ── */
#controls-bar {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  gap: 12px;
  min-height: 48px;
}

.ctrl-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 14px;
  padding: 4px 12px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 32px;
}

.ctrl-btn:hover { background: var(--bg-hover); border-color: var(--accent); }
.ctrl-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.speed-group {
  display: flex;
  gap: 2px;
}

.speed-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.speed-btn:first-child { border-radius: 4px 0 0 4px; }
.speed-btn:last-child { border-radius: 0 4px 4px 0; }
.speed-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.speed-btn:hover { border-color: var(--accent); }

#progress-container {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
}

#progress-track {
  flex: 1;
  height: 6px;
  background: var(--bg);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

#progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.2s;
  width: 0%;
}

#progress-text {
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
  min-width: 100px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

#event-counter {
  font-size: 11px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ── Selector Modal ── */
#selector-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

#selector-overlay.open { display: flex; }

#selector-modal {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 90%;
  max-width: 700px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

#selector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

#selector-header h2 {
  font-family: var(--font-ui);
  font-size: 18px;
  color: var(--text-bright);
}

#selector-actions {
  display: flex;
  gap: 8px;
}

#selector-list {
  overflow-y: auto;
  flex: 1;
  padding: 8px;
}

.run-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
  border: 1px solid transparent;
}

.run-item:hover { background: var(--bg-hover); border-color: var(--border); }

.run-item .seed {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  min-width: 60px;
}

.run-item .headline {
  flex: 1;
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.run-item .score {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  min-width: 50px;
  text-align: right;
}

/* ── Summary Panel ── */
#summary-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: 90;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
}

#summary-overlay.open { display: flex; }

#summary-modal {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 90%;
  max-width: 600px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: summaryAppear 0.6s ease;
}

@keyframes summaryAppear {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

#summary-modal .verdict-large {
  font-family: var(--font-ui);
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: 2px;
}

#summary-modal .headline-large {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 24px;
  font-style: italic;
}

.summary-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  text-align: left;
  margin-bottom: 24px;
}

.summary-stat {
  background: var(--bg-card);
  padding: 12px;
  border-radius: 6px;
}

.summary-stat .label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.summary-stat .value {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-bright);
  font-variant-numeric: tabular-nums;
}

/* ── Placeholder / Empty state ── */
#empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-dim);
  font-family: var(--font-ui);
  gap: 12px;
}

#empty-state .icon { font-size: 48px; opacity: 0.3; }
#empty-state .msg { font-size: 16px; }
#empty-state .hint { font-size: 12px; }

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

.ctrl-btn:focus-visible,
.speed-btn:focus-visible,
.load-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(96, 128, 255, 0.25);
}

/* ── Skip to Content Link (Accessibility) ── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: 4px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  z-index: 200;
  text-decoration: none;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 8px;
}

/* ── Dashboard Toggle (Mobile) ── */
#dashboard-toggle {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 12px;
  padding: 4px 10px;
  cursor: pointer;
  height: 32px;
  align-items: center;
  justify-content: center;
}

#dashboard-toggle:hover { background: var(--bg-hover); border-color: var(--accent); }

/* ── Responsive ── */

/* Tablet: < 900px */
@media (max-width: 900px) {
  #main-area { grid-template-columns: 1fr; }
  #dashboard-panel {
    display: none;
    border-left: none;
    border-top: 1px solid var(--border);
    max-height: 40vh;
  }
  #dashboard-panel.mobile-visible {
    display: block;
  }
  #dashboard-toggle {
    display: flex;
  }
}

/* Small tablet / large phone: < 768px */
@media (max-width: 768px) {
  .era-banner { padding: 20px 16px; margin: 16px 0; }
  .era-banner .era-name { font-size: 22px; letter-spacing: 3px; }
  .era-banner .era-range { font-size: 11px; }

  .event-card { padding: 8px 12px; margin-bottom: 6px; }
  .event-header { gap: 6px; }
  .event-description { font-size: 11px; }
  .event-narration { padding: 6px 8px; font-size: 12px; }

  #timeline-panel { padding: 10px; }

  #summary-modal { padding: 24px 20px; }
  #summary-modal .verdict-large { font-size: 24px; }
  #summary-modal .headline-large { font-size: 14px; }
  .summary-stats { grid-template-columns: 1fr 1fr; gap: 8px; }
  .summary-stat .value { font-size: 16px; }
}

/* Phone: < 600px */
@media (max-width: 600px) {
  #top-bar { flex-wrap: wrap; padding: 6px 10px; }
  #controls-bar { flex-wrap: wrap; padding: 6px 10px; gap: 6px; }

  .speed-group {
    order: 10;
    flex-wrap: wrap;
  }

  #progress-container { order: 5; width: 100%; }
  #progress-text { min-width: 80px; font-size: 10px; }
  #event-counter { font-size: 10px; }

  .era-banner .era-name { font-size: 18px; letter-spacing: 2px; }

  .summary-stats { grid-template-columns: 1fr; }
}

/* ── Utility ── */
.hidden { display: none !important; }
.cursor-blink::after {
  content: "\2588";
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}

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