:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-2: #273449;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --good: #22c55e;
  --warn: #f59e0b;
  --bad: #ef4444;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #0f172a, #111827);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  display: flex;
  justify-content: center;
  padding: 24px 16px 64px;
}

.wrap {
  width: 100%;
  max-width: 720px;
}

h1 {
  font-size: 1.5rem;
  margin: 0 0 4px;
}

.subtitle {
  color: var(--muted);
  margin: 0 0 24px;
  font-size: 0.95rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 14px;
  font-size: 1.05rem;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
}

input[type='text'],
input[type='number'] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 12px;
}

input[type='text']:focus,
input[type='number']:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--accent);
  color: white;
  transition: background 0.15s ease;
}

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

button.secondary {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
}

button.secondary:hover {
  background: #334155;
}

button.danger {
  background: var(--bad);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.code-display {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--accent-hover);
}

.pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.pill.open {
  background: rgba(34, 197, 94, 0.15);
  color: var(--good);
}

.pill.closed {
  background: rgba(239, 68, 68, 0.15);
  color: var(--bad);
}

.option-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.option-row input[type='text'] {
  margin-bottom: 0;
}

.option-row button {
  padding: 8px 10px;
  flex-shrink: 0;
}

.choice-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 8px;
  background: var(--panel-2);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.choice-option:hover {
  border-color: var(--accent);
}

.choice-option.picked {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.12);
}

.choice-option input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.choice-option span {
  flex: 1;
}

.bar-row {
  margin-bottom: 12px;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.bar-track {
  height: 10px;
  border-radius: 6px;
  background: var(--panel-2);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  border-radius: 6px;
  transition: width 0.3s ease;
}

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

.error {
  color: var(--bad);
  font-size: 0.9rem;
  margin: 8px 0 0;
  min-height: 1.2em;
}

.history-item {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  margin-top: 12px;
}

.history-item:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.center {
  text-align: center;
}

.hidden {
  display: none !important;
}

a {
  color: var(--accent-hover);
}