:root {
  color-scheme: light dark;
  --bg: #f4f4f6;
  --card-bg: #ffffff;
  --text: #1c1c1f;
  --muted: #6b6b74;
  --accent: #d64545;
  --border: #dcdce0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171a;
    --card-bg: #232327;
    --text: #f0f0f2;
    --muted: #a0a0a8;
    --accent: #e0645f;
    --border: #38383e;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 1.5rem;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
}

header {
  text-align: center;
  margin-bottom: 1.5rem;
}

header h1 {
  margin: 0 0 0.25rem;
}

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

main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}

.card h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.field-row label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.sub-fields {
  display: flex;
  gap: 0.5rem;
}

input[type="number"],
input[type="text"] {
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  width: 8rem;
}

.radio-row,
.checkbox-row {
  align-items: center;
}

.radio-row label,
.checkbox-row label {
  flex-direction: row;
  align-items: center;
  color: var(--text);
  font-size: 0.9rem;
}

button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
  cursor: pointer;
  margin-right: 0.5rem;
}

button:disabled {
  background: var(--muted);
  cursor: not-allowed;
}

button:hover:not(:disabled) {
  filter: brightness(1.1);
}

.dice-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.75rem 0;
}

.die {
  min-width: 2rem;
  text-align: center;
  padding: 0.25rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 0.8rem;
}

.output-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.output label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
}

.output div {
  font-size: 1.3rem;
  font-weight: 600;
}

#logOutput {
  margin-top: 1rem;
  padding: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  max-height: 240px;
  overflow-y: auto;
  font-size: 0.8rem;
  white-space: pre-wrap;
}