:root {
  color-scheme: dark;
  --bg: #0f1117;
  --card: #181b25;
  --text: #e8e9f0;
  --muted: #9aa0b4;
  --accent: #9147ff;
  --accent-hover: #a970ff;
  --danger: #d64545;
  --border: #2a2e3d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

.header h1 {
  margin: 0;
  font-size: 2rem;
}

.tagline {
  margin: 0 0 1.5rem;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.hidden {
  display: none !important;
}

.row {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.row.between {
  justify-content: space-between;
}

.row.wrap {
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #23273a;
  color: var(--text);
  font: inherit;
  cursor: pointer;
  text-decoration: none;
}

.button:hover {
  filter: brightness(1.15);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
}

.button.primary:hover {
  background: var(--accent-hover);
}

.button.danger {
  border-color: var(--danger);
  color: #ff9a9a;
}

.button.ghost {
  background: transparent;
}

.button:disabled {
  opacity: 0.5;
  cursor: default;
}

.status {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin: 0 0 1rem;
}

.status dt {
  color: var(--muted);
  font-size: 0.85rem;
}

.status dd {
  margin: 0;
  font-weight: 600;
}

.status dd.ok {
  color: #5ad37a;
}

.status dd.warn {
  color: #f0b847;
}

input[type="text"],
input[type="number"] {
  width: 100%;
  padding: 0.5rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0f1117;
  color: var(--text);
  font: inherit;
}

.settings {
  display: grid;
  gap: 0.9rem;
  max-width: 360px;
}

.settings label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.95rem;
}

.settings h3 {
  margin: 0.5rem 0 0;
  font-size: 1rem;
}

.cost-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.cost-grid label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.9rem;
}

.settings label.check {
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 0.5rem;
}

.settings label.check input {
  margin-top: 0.3rem;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
}

.error {
  color: #ff9a9a;
}

.message {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: #23273a;
}

code {
  background: #0f1117;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}