:root {
  --bg-color: #eff3f8;
  --text-color: #132236;
  --card-color: #ffffff;
  --button-bg: #0f172a;
  --button-text: #ffffff;
  --muted: #4b5563;
  --line: #dbe4ef;
  --accent: #0ea5e9;
}

html[data-theme="dark"] {
  --bg-color: #0a1220;
  --text-color: #e2e8f0;
  --card-color: #0f1b2f;
  --button-bg: #dbe4ef;
  --button-text: #0f172a;
  --muted: #94a3b8;
  --line: #243246;
  --accent: #38bdf8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  padding: 2rem 1rem;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(180deg, #dbeafe 0%, var(--bg-color) 42%);
  color: var(--text-color);
}

html[data-theme="dark"] body {
  background: linear-gradient(180deg, #0b1f37 0%, var(--bg-color) 42%);
}

.app {
  width: min(95vw, 820px);
  margin: 0 auto;
  background-color: var(--card-color);
  border-radius: 14px;
  padding: 1.25rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.2);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

h1 {
  margin: 0;
  font-size: 1.2rem;
}

.subtitle {
  margin: 0.5rem 0 0;
  color: var(--muted);
}

.controls {
  margin-top: 1rem;
}

.control-grid {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.control-item {
  display: grid;
  gap: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
  color: var(--muted);
}

.control-item strong {
  color: var(--text-color);
}

.status {
  margin-top: 1rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--muted);
}

.card {
  margin-top: 0.75rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.hidden {
  display: none;
}

.sets {
  display: grid;
  gap: 0.7rem;
}

.set-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 0.6rem;
  align-items: center;
}

.set-label {
  color: var(--muted);
  font-weight: 600;
}

.set-main {
  display: grid;
  gap: 0.35rem;
}

.balls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.ball {
  min-width: 2rem;
  text-align: center;
  font-weight: 700;
  padding: 0.35rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--accent) 14%, transparent);
}

.set-metrics {
  font-size: 0.82rem;
  color: var(--muted);
}

.set-note {
  margin: 0.9rem 0 0.45rem;
  color: var(--muted);
  font-weight: 600;
}

.perf-grid {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.perf-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
}

.perf-label {
  color: var(--muted);
  font-size: 0.82rem;
}

.perf-value {
  font-weight: 700;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.history-table th,
.history-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.35rem 0.2rem;
  text-align: left;
}

.set-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.badge {
  font-size: 0.76rem;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line);
}

.badge-evidence {
  color: var(--muted);
}

.risk-low {
  color: #047857;
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.12);
}

.risk-medium {
  color: #b45309;
  border-color: #f59e0b;
  background: rgba(245, 158, 11, 0.12);
}

.risk-high {
  color: #b91c1c;
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.12);
}

#theme-toggle {
  border: 0;
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  white-space: nowrap;
  font-weight: 600;
  background: var(--button-bg);
  color: var(--button-text);
  cursor: pointer;
}

#generate-btn {
  border: 0;
  border-radius: 10px;
  padding: 0.75rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--button-bg);
  color: var(--button-text);
  cursor: pointer;
}

#generate-btn:disabled {
  opacity: 0.65;
  cursor: wait;
}