:root {
  --bg-main: #0b0f19;
  --bg-card: #151d2f;
  --bg-card-selected: #1e2b45;
  --border: rgba(255, 255, 255, 0.08);
  --primary: #f59e0b;
  --primary-hover: #d97706;
  --primary-glow: rgba(245, 158, 11, 0.25);
  --accent-emerald: #10b981;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --radius: 12px;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-family);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 24px 16px;
}

.booking-container {
  width: 100%;
  max-width: 580px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.header-banner {
  text-align: center;
  padding: 20px 0;
}

.brand-badge {
  display: inline-block;
  background: rgba(245, 158, 11, 0.15);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}

.shop-title {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.shop-subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 4px;
}

/* Stepper */
.stepper-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.step-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.step-indicator.active {
  color: var(--primary);
}

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.step-indicator.active .step-num {
  background: var(--primary);
  color: #000;
  border-color: var(--primary);
}

/* Card steps */
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: none;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.step-card.active {
  display: flex;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.step-title {
  font-size: 18px;
  font-weight: 700;
}

.step-description {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: -8px;
}

/* Option lists */
.selectable-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.selectable-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.2s ease;
}

.selectable-item:hover {
  background: var(--bg-card-selected);
  border-color: rgba(245, 158, 11, 0.4);
}

.selectable-item.selected {
  background: rgba(245, 158, 11, 0.12);
  border-color: var(--primary);
}

.item-name {
  font-weight: 600;
  font-size: 15px;
}

.item-detail {
  font-size: 12px;
  color: var(--text-muted);
}

.item-price {
  font-weight: 700;
  color: var(--primary);
  font-size: 15px;
}

/* Slots Grid */
.slots-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.slot-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 0;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-main);
  transition: all 0.2s;
}

.slot-btn:hover {
  border-color: var(--primary);
  background: rgba(245, 158, 11, 0.08);
}

.slot-btn.selected {
  background: var(--primary);
  color: #000;
  border-color: var(--primary);
}

/* Form inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.form-control {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
}

/* Action buttons */
.step-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
}

.btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #000;
  box-shadow: 0 4px 12px var(--primary-glow);
}

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

/* Voucher/Comprovante */
.voucher-card {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.voucher-icon {
  font-size: 36px;
  margin-bottom: 8px;
}

.voucher-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-emerald);
}