:root {
  --bg: #0f1117;
  --surface: #1a1d2e;
  --surface2: #22253a;
  --border: #2a2d3e;
  --text: #e2e8f0;
  --muted: #64748b;
  --a: #60a5fa;
  --b: #fbbf24;
  --c: #f87171;
  --green: #34d399;
  --yellow: #fde68a;
  --win-bg-a: rgba(96, 165, 250, 0.08);
  --win-bg-b: rgba(251, 191, 36, 0.08);
  --win-bg-c: rgba(248, 113, 113, 0.08);
  --accent: #818cf8;
}

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

html { font-size: 15px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Nav ── */
nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

nav .site-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

nav a:hover, nav a.active { color: var(--text); }

nav .spacer { flex: 1; }

/* ── Layout ── */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ── Header ── */
.page-header {
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.page-header .subtitle {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

/* ── Matchup cards ── */
.matchup-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.matchup-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 1rem;
  cursor: grab;
  user-select: none;
  transition: border-color 0.15s, box-shadow 0.15s, opacity 0.15s;
}

.matchup-card:hover { border-color: var(--accent); }
.matchup-card.dragging { opacity: 0.4; cursor: grabbing; }
.matchup-card.drag-over { border-color: var(--green); box-shadow: 0 0 0 2px rgba(52,211,153,0.2); }

.rank-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--muted);
  min-width: 1.5rem;
}

.matchup-label {
  flex: 1;
  font-family: 'Fira Mono', 'Cascadia Code', monospace;
  font-size: 1rem;
  font-weight: 600;
}

.flip-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--muted);
  padding: 0.2rem 0.5rem;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
}

.flip-btn:hover { background: var(--border); color: var(--text); }

/* ── State panel ── */
.state-panel {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.winner-display {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
}

.winner-display.a { color: var(--a); }
.winner-display.b { color: var(--b); }
.winner-display.c { color: var(--c); }

.state-meta {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.state-tag {
  font-size: 0.8rem;
  color: var(--muted);
  font-family: monospace;
}

.sincere-tag {
  font-size: 0.8rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  display: inline-block;
  font-weight: 600;
}

.sincere-tag.yes { background: rgba(52,211,153,0.15); color: var(--green); }
.sincere-tag.no  { background: rgba(248,113,113,0.15); color: var(--c); }

/* ── Candidate colors ── */
.cand-a { color: var(--a); }
.cand-b { color: var(--b); }
.cand-c { color: var(--c); }

/* ── Shortcuts accordion ── */
.accordion {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.accordion-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  width: 100%;
  text-align: left;
  color: var(--text);
  transition: background 0.15s;
}

.accordion-header:hover { background: var(--surface2); }

.accordion-header .chevron {
  transition: transform 0.2s;
  font-size: 0.7rem;
  color: var(--muted);
}

.accordion-header.open .chevron { transform: rotate(90deg); }

.accordion-body {
  display: none;
  padding: 0.75rem 1rem;
  background: var(--surface2);
  border-top: 1px solid var(--border);
  gap: 0.4rem;
  flex-direction: column;
}

.accordion-body.open { display: flex; }

.shortcut-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.4rem 0.75rem;
  font-family: 'Fira Mono', monospace;
  font-size: 0.8rem;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, border-color 0.15s;
}

.shortcut-btn:hover { background: var(--border); border-color: var(--accent); }

/* ── Deviation panel ── */
.dev-section { margin-bottom: 1.25rem; }

.dev-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border);
}

.dev-row {
  display: grid;
  grid-template-columns: 11.5rem 1fr 3rem 2rem;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.5rem;
  border-radius: 5px;
  font-size: 0.8rem;
  transition: background 0.1s;
}

.dev-row:hover { background: var(--surface2); }

.dev-row.profitable {
  background: rgba(129, 140, 248, 0.06);
}

.dev-row.profitable:hover {
  background: rgba(129, 140, 248, 0.12);
}

.dev-label-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.dev-label {
  font-family: 'Fira Mono', monospace;
  color: var(--muted);
  font-size: 0.75rem;
}

.dev-kind {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.05rem 0.32rem;
  border-radius: 3px;
  white-space: nowrap;
}

.kind-reorder { background: var(--surface2); color: var(--muted); border: 1px solid var(--border); }
.kind-flip { background: rgba(248, 113, 113, 0.12); color: var(--c); border: 1px solid rgba(248, 113, 113, 0.3); }

.dev-desc {
  font-family: 'Fira Mono', monospace;
  font-size: 0.75rem;
  color: var(--text);
}

.dev-winner {
  font-weight: 700;
  font-size: 0.85rem;
  text-align: center;
}

.dev-tag {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  text-align: center;
}

.tag-min { background: var(--accent); color: #fff; }
.tag-more { background: var(--surface2); color: var(--muted); border: 1px solid var(--border); }
.tag-star { color: var(--green); font-size: 0.9rem; }
.tag-dot  { color: var(--b); }
.tag-down { color: var(--muted); }

/* ── Callout ── */
.callout {
  background: rgba(129, 140, 248, 0.08);
  border: 1px solid rgba(129, 140, 248, 0.25);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  font-size: 0.82rem;
  color: var(--text);
  margin-top: 1rem;
}

.callout strong { color: var(--accent); }

/* ── No deviation message ── */
.no-dev-msg {
  color: var(--muted);
  font-size: 0.85rem;
  font-style: italic;
  padding: 1rem 0;
}

/* ── Section headings ── */
.section-heading {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin: 1.5rem 0 0.75rem;
}

/* ── Graph page ── */
#graph-container {
  width: 100%;
  height: calc(100vh - 120px);
  position: relative;
}

#graph-svg {
  width: 100%;
  height: 100%;
}

.graph-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.toolbar-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}

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

/* ── Tooltip (pinned bottom-right, non-intrusive) ── */
#tooltip {
  position: fixed;
  right: 1.25rem;
  bottom: 1.5rem;
  width: 380px;
  max-height: 65vh;
  overflow-y: auto;
  background: rgba(15, 17, 23, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  pointer-events: none;
  z-index: 50;
  display: none;
}

#tooltip .tt-desc {
  font-family: monospace;
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
  white-space: normal;
  overflow-wrap: break-word;
}

#tooltip .tt-winner {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

#tooltip .tt-devs {
  border-top: 1px solid var(--border);
  padding-top: 0.5rem;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  line-height: 1.5;
}

#tooltip .tt-dev-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

#tooltip .tt-kind {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.05rem 0.35rem;
  border-radius: 3px;
  white-space: nowrap;
}

/* ── Legend ── */
.legend {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.legend-diamond {
  width: 10px;
  height: 10px;
  transform: rotate(45deg);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .dev-row {
    grid-template-columns: 7rem 1fr 2.5rem 1.5rem;
    font-size: 0.72rem;
  }
}