:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #2ecddc;
  --accent-dark: #002d61;
  --danger: #f87171;
  --success: #4ade80;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background: linear-gradient(135deg, #0f172a 0%, #1a2744 100%);
  color: var(--text);
  min-height: 100vh;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

header {
  text-align: center;
  margin-bottom: 32px;
}

header h1 {
  margin: 0 0 8px;
  font-size: 1.75rem;
  color: var(--accent);
}

header p {
  margin: 0;
  color: var(--muted);
}

.steps {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 24px;
}

.step-pill {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 0.85rem;
}

.step-pill.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(46, 205, 220, 0.1);
}

.step-pill.done {
  border-color: var(--success);
  color: var(--success);
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 16px;
  font-size: 1.15rem;
  color: #fff;
}

.form-group {
  margin-bottom: 16px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

input[type="text"],
input[type="url"],
input[type="number"],
input[type="datetime-local"],
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0f172a;
  color: var(--text);
  font-size: 0.95rem;
}

textarea {
  min-height: 120px;
  resize: vertical;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.tab-btn {
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  font-size: 0.9rem;
}

.tab-btn.active {
  background: var(--accent-dark);
  border-color: var(--accent);
  color: var(--accent);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.field-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.field-table th,
.field-table td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
}

.field-table th {
  background: #0f172a;
  color: var(--muted);
}

.field-table input[type="number"] {
  width: 80px;
  padding: 4px 8px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  background: rgba(46, 205, 220, 0.15);
  color: var(--accent);
}

.badge.extra {
  background: rgba(148, 163, 184, 0.15);
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
  flex-wrap: wrap;
}

button {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  font-size: 0.95rem;
  cursor: pointer;
  font-weight: 600;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-dark);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.alert-error {
  background: rgba(248, 113, 113, 0.15);
  border: 1px solid var(--danger);
  color: var(--danger);
}

.alert-success {
  background: rgba(74, 222, 128, 0.15);
  border: 1px solid var(--success);
  color: var(--success);
}

.alert-info {
  background: rgba(46, 205, 220, 0.1);
  border: 1px solid var(--accent);
  color: var(--accent);
}

.hidden {
  display: none !important;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.timing-summary {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.timing-chip {
  background: #0f172a;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  text-align: center;
}

.timing-chip strong {
  display: block;
  font-size: 1.1rem;
  color: var(--accent);
}

.timing-chip span {
  font-size: 0.75rem;
  color: var(--muted);
}

.csv-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.csv-row textarea {
  flex: 1;
  min-width: 200px;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}