/* SmartBook Frontend Styles */
:root {
  --sb-primary:   #4f46e5;
  --sb-btn:       #4f46e5;
  --sb-highlight: #eef2ff;
  --sb-text:      #1e293b;
  --sb-radius:    10px;
  --sb-shadow:    0 4px 24px rgba(79,70,229,.10);
  --sb-border:    #e2e8f0;
}

.smartbook-wrap * { box-sizing: border-box; }

.smartbook-wrap {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--sb-text);
  max-width: 680px;
  margin: 0 auto;
  padding: 16px;
}

/* Steps */
.sb-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
  gap: 0;
  flex-wrap: nowrap;
}
.sb-step {
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: .45;
  transition: opacity .3s;
}
.sb-step.active, .sb-step.done { opacity: 1; }
.sb-step-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--sb-border);
  color: #64748b;
  font-weight: 700;
  font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  transition: background .3s, color .3s;
}
.sb-step.active .sb-step-num {
  background: var(--sb-primary);
  color: #fff;
}
.sb-step.done .sb-step-num {
  background: #10b981;
  color: #fff;
}
.sb-step-label { font-size: 13px; font-weight: 600; white-space: nowrap; }
.sb-step-line { flex: 1; height: 2px; background: var(--sb-border); margin: 0 12px; min-width: 24px; }

/* Panels */
.sb-panel {
  background: #fff;
  border: 1px solid var(--sb-border);
  border-radius: var(--sb-radius);
  padding: 28px;
  box-shadow: var(--sb-shadow);
  animation: sbFadeIn .25s ease;
}
@keyframes sbFadeIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }
.sb-panel.hidden { display: none !important; }

/* Panel header */
.sb-panel-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.sb-panel-header h3 { margin: 0; font-size: 16px; color: var(--sb-primary); }

/* Back button */
.sb-back-btn {
  background: none;
  border: 1px solid var(--sb-border);
  border-radius: 6px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 13px;
  color: #64748b;
  transition: all .2s;
}
.sb-back-btn:hover { background: var(--sb-highlight); border-color: var(--sb-primary); color: var(--sb-primary); }

/* Calendar */
.sb-calendar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.sb-month-label { margin: 0; font-size: 18px; font-weight: 700; }
.sb-nav-btn {
  background: var(--sb-highlight);
  border: none;
  border-radius: 8px;
  width: 36px; height: 36px;
  font-size: 20px;
  cursor: pointer;
  color: var(--sb-primary);
  transition: background .2s;
}
.sb-nav-btn:hover { background: var(--sb-primary); color: #fff; }
.sb-nav-btn:disabled { opacity: .35; cursor: not-allowed; }

.sb-calendar-grid { user-select: none; }
.sb-day-names {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
}
.sb-day-names span {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 4px;
}
.sb-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.sb-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .15s;
  position: relative;
}
.sb-day.empty { cursor: default; }
.sb-day.unavailable { color: #cbd5e1; cursor: not-allowed; }
.sb-day.available {
  background: var(--sb-highlight);
  color: var(--sb-primary);
  font-weight: 700;
}
.sb-day.available::after {
  content: '';
  width: 4px; height: 4px;
  background: var(--sb-primary);
  border-radius: 50%;
  position: absolute;
  bottom: 4px;
}
.sb-day.available:hover {
  background: var(--sb-primary);
  color: #fff;
  transform: scale(1.05);
}
.sb-day.available:hover::after { background: #fff; }
.sb-day.selected {
  background: var(--sb-primary) !important;
  color: #fff !important;
  border-color: var(--sb-primary);
}
.sb-day.today { font-weight: 800; }
.sb-day.today:not(.available) { color: #94a3b8; }
.sb-calendar-hint {
  text-align: center;
  font-size: 12px;
  color: #94a3b8;
  margin-top: 12px;
}

/* Slots */
.sb-slots {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px;
}
.sb-slot {
  border: 2px solid var(--sb-border);
  border-radius: 8px;
  padding: 12px 10px;
  text-align: center;
  cursor: pointer;
  transition: all .15s;
  font-size: 13px;
  font-weight: 600;
  background: #fff;
}
.sb-slot:hover {
  border-color: var(--sb-primary);
  color: var(--sb-primary);
  background: var(--sb-highlight);
}
.sb-slot.selected {
  border-color: var(--sb-primary);
  background: var(--sb-primary);
  color: #fff;
}
.sb-slot.unavailable {
  background: #f8fafc;
  color: #cbd5e1;
  cursor: not-allowed;
  text-decoration: line-through;
  border-color: #f1f5f9;
}
.sb-loading { color: #94a3b8; font-size: 14px; text-align: center; padding: 20px; }

/* Form */
.sb-booking-summary {
  font-size: 13px;
  color: #64748b;
  background: var(--sb-highlight);
  padding: 6px 12px;
  border-radius: 6px;
}
.sb-booking-summary strong { color: var(--sb-primary); }

.sb-form { display: flex; flex-direction: column; gap: 16px; }
.sb-field { display: flex; flex-direction: column; gap: 6px; }
.sb-field label { font-size: 13px; font-weight: 600; color: #374151; }
.sb-field label span { color: #ef4444; }
.sb-field input,
.sb-field textarea {
  border: 1.5px solid var(--sb-border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 15px;
  outline: none;
  transition: border .2s, box-shadow .2s;
  width: 100%;
  font-family: inherit;
  color: var(--sb-text);
}
.sb-field input:focus,
.sb-field textarea:focus {
  border-color: var(--sb-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--sb-primary) 20%, transparent);
}
.sb-field input.sb-invalid { border-color: #ef4444; }
.sb-err { font-size: 12px; color: #ef4444; min-height: 16px; }

.sb-submit-btn {
  background: var(--sb-btn);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity .2s, transform .1s;
  letter-spacing: .01em;
  margin-top: 4px;
}
.sb-submit-btn:hover { opacity: .9; }
.sb-submit-btn:active { transform: scale(.98); }
.sb-submit-btn:disabled { opacity: .5; cursor: not-allowed; }

/* Success */
.sb-success { text-align: center; padding: 40px 28px; }
.sb-success-icon {
  width: 64px; height: 64px;
  background: #d1fae5;
  color: #059669;
  border-radius: 50%;
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.sb-success h3 { font-size: 22px; margin: 0 0 10px; }
.sb-success p { color: #64748b; font-size: 15px; line-height: 1.6; }
.sb-btn-outline {
  border: 2px solid var(--sb-primary);
  color: var(--sb-primary);
  background: none;
  border-radius: 8px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 12px;
  transition: all .2s;
}
.sb-btn-outline:hover { background: var(--sb-primary); color: #fff; }

/* Alert */
.sb-alert-error {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #991b1b;
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 14px;
  margin-top: 16px;
}
.sb-alert-error.hidden { display: none; }

/* Responsive */
@media (max-width: 520px) {
  .smartbook-wrap { padding: 8px; }
  .sb-panel { padding: 18px 14px; }
  .sb-step-label { display: none; }
  .sb-slots { grid-template-columns: repeat(2, 1fr); }
  .sb-day { font-size: 12px; }
}