:root {
  --bg: #0f172a;
  --panel: #111b30;
  --panel-2: #0d1526;
  --text: #e6ecf5;
  --muted: #9fb3d1;
  --accent: #4f9cff;
  --accent-2: #22c55e;
  --danger: #ef4444;
  --edge: rgba(255, 255, 255, 0.08);
  --shadow: 0 16px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  font-family: "Poppins", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 20%, rgba(79,156,255,0.12), transparent 26%),
    radial-gradient(circle at 82% 12%, rgba(34,197,94,0.10), transparent 26%),
    linear-gradient(140deg, #0b1222 0%, #0f172a 40%, #0b1222 100%);
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.app-shell {
  max-width: 1380px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 20px;
}

.panel {
  border-radius: 18px;
  border: 1px solid var(--edge);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.sidebar {
  padding: 18px;
  position: sticky;
  top: 20px;
  height: fit-content;
  background: linear-gradient(160deg, #0c1324 0%, #0a1020 100%);
}

.sidebar h2, .sidebar h3, .hero-title, .game-title, .brief-title { margin: 0; }
.sidebar-copy, .sidebar-note, .metric-subtext, .history-empty, .feed-item, .rulebook-copy, .rulebook-list li, .brief-list li, .game-subtitle, .hero-copy, .result-text, label, .game-tip {
  color: var(--muted);
}
.sidebar-copy, .sidebar-note, .metric-subtext, .history-empty, .feed-item, .rulebook-copy, .brief-list li, .game-subtitle, .hero-copy, .result-text, .game-tip { font-size: 0.92rem; line-height: 1.4; }
.sidebar-section { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--edge); }

.game-nav { display: grid; gap: 10px; margin-top: 14px; }
.selector-card {
  display: block;
  width: 100%;
  text-align: left;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--edge);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
}
.selector-card.active { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(79, 156, 255, 0.2) inset; }
.selector-row { display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.selector-title, .history-title, .feed-title, .rulebook-title, .metric-label, .result-top, .brief-kicker, .hero-kicker {
  font-weight: 700;
}
.selector-title, .history-title, .feed-title, .rulebook-title { margin: 0; }
.selector-rate, .hero-chip {
  border-radius: 999px;
  border: 1px solid var(--edge);
  background: rgba(255,255,255,0.04);
  padding: 4px 10px;
  font-size: 0.76rem;
  font-weight: 700;
}
.selector-sub { margin: 10px 0 0; font-size: 0.84rem; color: var(--muted); }

.main-content { display: grid; gap: 18px; }
.hero { padding: 22px; }
.hero-kicker, .brief-kicker {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
}
.hero-title { font-size: clamp(2rem, 4vw, 3rem); margin-top: 8px; }
.hero-copy { margin: 10px 0 0; max-width: 920px; }
.hero-row { margin-top: 14px; display: flex; gap: 10px; flex-wrap: wrap; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.metric-card {
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--edge);
  background: var(--panel-2);
}
.metric-card.accent { background: linear-gradient(180deg, rgba(79,156,255,0.12), rgba(79,156,255,0.05)); }
.metric-label { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; color: var(--muted); margin: 0; }
.metric-value { font-size: 1.6rem; font-weight: 800; margin: 10px 0 6px; }
.metric-subtext { margin: 0; }

.two-col {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 18px;
}
.section-gap { margin-top: 2px; }
.brief-card, .info-panel, .game-panel, .feed-card, .rulebook { padding: 18px; }
.brief-list, .rulebook-list, .history-card ul { padding-left: 18px; margin: 14px 0 0; }

.game-heading { display: flex; gap: 14px; align-items: center; }
.game-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(79,156,255,0.2), rgba(34,197,94,0.18));
  font-size: 1.6rem;
}
.game-subtitle { margin-top: 4px; }
.game-tip { margin: 16px 0; }
.result-banner {
  margin-top: 16px;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--edge);
  background: var(--panel-2);
}
.result-win { border-color: rgba(34,197,94,0.55); }
.result-loss { border-color: rgba(239,68,68,0.55); }
.result-neutral { border-color: rgba(255,255,255,0.14); }
.result-top { margin: 0; font-size: 0.95rem; }
.result-text { margin: 8px 0 0; }
.game-layout { margin-top: 18px; }
.game-form { display: grid; gap: 12px; }

input[type="text"],
input[type="range"] {
  width: 100%;
}

input[type="text"] {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--edge);
  background: var(--panel-2);
  color: var(--text);
}

input[type="range"] {
  accent-color: var(--accent);
}

output {
  display: inline-block;
  min-width: 24px;
  font-family: "Space Mono", monospace;
  color: var(--text);
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.segmented.triple { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.segmented label { position: relative; }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented span {
  display: block;
  text-align: center;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--edge);
  background: var(--panel-2);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}
.segmented input:checked + span {
  background: var(--accent);
  color: #08101c;
  border-color: var(--accent);
}

.button {
  border: 0;
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--accent);
  color: #08101c;
  font-weight: 700;
  cursor: pointer;
}
.button-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--edge);
}
.full { width: 100%; }
.quick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0; }
.command-form { display: grid; gap: 10px; }
.side-metrics { display: grid; gap: 12px; }
.history-card {
  border-radius: 14px;
  border: 1px solid var(--edge);
  background: var(--panel-2);
  padding: 16px;
}
.feed-item + .feed-item { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--edge); }
.note-line {
  margin-top: 12px;
  color: #c9d7ea;
  font-size: 0.85rem;
}

code {
  font-family: "Space Mono", monospace;
  background: rgba(255,255,255,0.06);
  padding: 2px 5px;
  border-radius: 6px;
}

@media (max-width: 1100px) {
  .app-shell, .two-col { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

@media (max-width: 720px) {
  .app-shell { padding: 14px; }
  .stats-grid { grid-template-columns: 1fr; }
  .quick-grid, .segmented, .segmented.triple { grid-template-columns: 1fr; }
}