/* ============================================================
   Doctor Appointment Booking System - Frontend CSS
   ============================================================ */

:root {
  --dab-primary:   #1a73e8;
  --dab-success:   #28a745;
  --dab-danger:    #dc3545;
  --dab-warning:   #ffc107;
  --dab-info:      #17a2b8;
  --dab-dark:      #343a40;
  --dab-light:     #f8f9fa;
  --dab-border:    #dee2e6;
  --dab-radius:    10px;
  --dab-shadow:    0 4px 24px rgba(0,0,0,.08);
  --dab-font:      'Segoe UI', system-ui, sans-serif;
}

.dab-wrap { font-family: var(--dab-font); color: #333; max-width: 960px; margin: 0 auto; padding: 20px; }

/* Card */
.dab-card { background: #fff; border-radius: var(--dab-radius); box-shadow: var(--dab-shadow); overflow: hidden; }
.dab-card-header { background: linear-gradient(135deg, var(--dab-primary), #0d47a1); color: #fff; padding: 28px 28px 20px; }
.dab-card-header h2 { margin: 0 0 6px; font-size: 24px; }
.dab-card-header p  { margin: 0; opacity: .85; font-size: 14px; }
.dab-card-body { padding: 28px; }

/* Steps */
.dab-step-title { font-size: 16px; font-weight: 700; color: var(--dab-primary); border-bottom: 2px solid var(--dab-border); padding-bottom: 10px; margin-bottom: 20px; }

/* Grid */
.dab-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.dab-full-width { grid-column: 1 / -1; }
@media (max-width: 600px) { .dab-grid-2 { grid-template-columns: 1fr; } }

/* Form */
.dab-form-group { display: flex; flex-direction: column; gap: 5px; }
.dab-form-group label { font-size: 13px; font-weight: 600; color: #555; }
.dab-form-group .req { color: var(--dab-danger); }
.dab-input { width: 100%; padding: 10px 14px; border: 1.5px solid var(--dab-border); border-radius: 8px; font-size: 14px; outline: none; transition: border-color .2s; box-sizing: border-box; font-family: var(--dab-font); }
.dab-input:focus { border-color: var(--dab-primary); }
.dab-input-sm { padding: 7px 10px; font-size: 13px; }

/* Buttons */
.dab-btn { display: inline-flex; align-items: center; gap: 6px; padding: 11px 22px; border: none; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; transition: opacity .2s, transform .1s; text-decoration: none; }
.dab-btn:hover { opacity: .9; transform: translateY(-1px); }
.dab-btn:active { transform: translateY(0); }
.dab-btn-primary { background: var(--dab-primary); color: #fff; }
.dab-btn-success { background: var(--dab-success); color: #fff; }
.dab-btn-danger  { background: var(--dab-danger);  color: #fff; }
.dab-btn-outline { background: transparent; border: 2px solid var(--dab-primary); color: var(--dab-primary); }
.dab-btn-sm      { padding: 6px 14px; font-size: 12px; }
.dab-btn-next    { margin-top: 20px; }
.dab-btn-row     { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; }
.dab-btn-sm.dab-btn-success { background: var(--dab-success); color: #fff; border: none; }
.dab-btn-sm.dab-btn-danger  { background: var(--dab-danger);  color: #fff; border: none; }
.dab-btn-sm.dab-btn-outline { border: 1.5px solid var(--dab-primary); }

/* Alerts */
.dab-alert { padding: 12px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; border: 1px solid transparent; }
.dab-alert-success { background: #d4edda; border-color: #c3e6cb; color: #155724; }
.dab-alert-danger  { background: #f8d7da; border-color: #f5c6cb; color: #721c24; }
.dab-alert-info    { background: #d1ecf1; border-color: #bee5eb; color: #0c5460; }

/* Slots */
.dab-slots { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.dab-slot-btn { padding: 8px 16px; border: 2px solid var(--dab-border); border-radius: 20px; background: #fff; font-size: 13px; cursor: pointer; transition: all .2s; }
.dab-slot-btn:hover   { border-color: var(--dab-primary); color: var(--dab-primary); }
.dab-slot-btn.active  { background: var(--dab-primary); color: #fff; border-color: var(--dab-primary); }
.dab-slot-btn:disabled{ opacity: .4; cursor: not-allowed; }

/* Doctor info card */
.dab-doctor-card { background: #f0f7ff; border: 1.5px solid #c2dff7; border-radius: 8px; padding: 14px; margin-top: 8px; }
.dab-doctor-spec { font-weight: 600; color: #555; }
.dab-doctor-fee  { margin-top: 6px; font-size: 15px; color: var(--dab-primary); }

/* Summary box */
.dab-summary-box { background: #f8f9fa; border-radius: 8px; padding: 20px; margin-bottom: 8px; }
.dab-summary-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid #e9ecef; font-size: 14px; }
.dab-summary-row:last-child { border-bottom: none; font-weight: bold; font-size: 16px; color: var(--dab-primary); }

/* Success box */
.dab-success-box { text-align: center; padding: 40px 20px; }
.dab-success-icon { font-size: 64px; margin-bottom: 16px; }
.dab-success-box h3 { font-size: 24px; color: var(--dab-success); margin-bottom: 12px; }

/* Hint */
.dab-hint { font-size: 13px; color: #999; }

/* Modal */
.dab-modal { position: fixed; inset: 0; z-index: 99999; display: flex; align-items: center; justify-content: center; }
.dab-modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,.5); }
.dab-modal-content { position: relative; background: #fff; border-radius: var(--dab-radius); padding: 28px; max-width: 640px; width: 95%; max-height: 90vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.dab-modal-lg { max-width: 760px; }
.dab-modal-xl { max-width: 780px; }
.dab-modal-close { position: absolute; top: 14px; right: 16px; background: none; border: none; font-size: 20px; cursor: pointer; color: #666; }

/* Loading */
.dab-spinner { display: inline-block; width: 20px; height: 20px; border: 3px solid #ddd; border-top-color: var(--dab-primary); border-radius: 50%; animation: dab-spin .8s linear infinite; }
@keyframes dab-spin { to { transform: rotate(360deg); } }