/*
 * Final CSS for the Appointment Booking module
 * This combines and refines the provided styles for consistency and clarity.
 */

/* --- General & Variables --- */
:root {
  /* Colors */
  --primary-color: #0066cc; /* A strong blue for key elements */
  --secondary-color: #00bcd4; /* A lighter blue for highlights */
  --success-color: #10b981; /* Green for success states */
  --error-color: #ef4444; /* Red for error states */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Spacing */
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Typography */
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;

  /* Borders & Shadows */
  --radius-base: 0.25rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Transitions */
  --transition-fast: 0.2s ease-in-out;
  --transition-base: 0.3s ease-in-out;
}

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--gray-50);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* --- Navigation --- */
.navbar {
  background-color: white;
  border-bottom: 1px solid var(--gray-200);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-8);
}

.nav-logo {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
}

.logo-icon {
  width: 32px;
  height: 32px;
  margin-right: var(--space-2);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  margin: 0;
  padding: 0;
}

.nav-link {
  text-decoration: none;
  color: var(--gray-600);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-actions {
  display: flex;
  gap: var(--space-4);
}

.btn {
  padding: var(--space-3) var(--space-6);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.btn-primary:hover {
  background-color: #0059b3;
}

.btn-secondary {
  background-color: var(--gray-300);
  color: var(--gray-800);
}

.btn-secondary:hover {
  background-color: var(--gray-400);
}

.btn-outline {
  background: transparent;
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.btn-outline:hover {
  background-color: rgba(0, 102, 204, 0.05);
}

/* --- Main Appointment Section --- */
.appointment-main {
  min-height: calc(100vh - 80px);
  background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
  padding: var(--space-8) 0;
}

.appointment-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.appointment-header h1 {
  color: var(--gray-900);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-2xl);
}

.appointment-header p {
  color: var(--gray-600);
  font-size: var(--font-size-lg);
}

/* --- Progress Indicator --- */
.progress-indicator {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-16);
  position: relative;
}

.progress-indicator::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--gray-300);
  z-index: 1;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  position: relative;
  z-index: 2;
  background-color: var(--gray-50);
  padding: 0 var(--space-4);
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--gray-300);
  color: var(--gray-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  transition: all var(--transition-base);
}

.progress-step.active .step-number {
  background-color: var(--primary-color);
  color: white;
}

.progress-step.completed .step-number {
  background-color: var(--success-color);
  color: white;
}

.step-label {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  font-weight: 500;
  text-align: center;
}

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

/* --- Form Styles --- */
.appointment-form {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.form-step {
  display: none;
  padding: var(--space-10);
}

.form-step.active {
  display: block;
}

.form-section {
  margin-bottom: var(--space-8);
}

.form-title {
  font-size: var(--font-size-2xl);
  color: var(--gray-900);
  margin-bottom: var(--space-6);
  text-align: center;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.full-width {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-200);
}

.form-group {
  position: relative;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.2);
}

.form-group .error-message {
  position: absolute;
  bottom: -20px;
  left: 0;
  font-size: var(--font-size-sm);
  color: var(--error-color);
  display: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.form-group.error .error-message.show {
  display: block;
  opacity: 1;
}

/* --- Insurance Fields --- */
.insurance-fields {
  margin-top: var(--space-6);
  padding: var(--space-6);
  background-color: var(--gray-50);
  border-radius: var(--radius-lg);
  border: 2px solid var(--gray-200);
  transition: all var(--transition-base);
}

.insurance-fields.active {
  border-color: var(--primary-color);
  background-color: rgba(0, 102, 204, 0.02);
}

/* --- Appointment Scheduler --- */
.appointment-scheduler {
  margin-top: var(--space-8);
}

.appointment-scheduler h3 {
  margin-bottom: var(--space-6);
  color: var(--gray-900);
  text-align: center;
}

.scheduler-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.calendar-section,
.time-section {
  background-color: var(--gray-50);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 2px solid var(--gray-200);
}

.calendar-section h4,
.time-section h4 {
  margin-bottom: var(--space-4);
  color: var(--gray-800);
  text-align: center;
}

/* --- Calendar Styles --- */
.calendar {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  background-color: var(--primary-color);
  color: white;
}

.calendar-nav-btn {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-base);
  transition: background-color var(--transition-fast);
}

.calendar-nav-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.calendar-month {
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  background-color: var(--gray-200);
}

.calendar-day-header {
  background-color: var(--gray-100);
  padding: var(--space-3);
  text-align: center;
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--gray-600);
}

.calendar-day {
  background: white;
  padding: var(--space-3);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calendar-day:hover {
  background-color: var(--gray-100);
}

.calendar-day.disabled {
  color: var(--gray-400);
  cursor: not-allowed;
  background-color: var(--gray-50);
}

.calendar-day.selected {
  background-color: var(--primary-color);
  color: white;
}

.calendar-day.today {
  background-color: var(--secondary-color);
  color: white;
  font-weight: 600;
}

/* --- Time Slots --- */
.time-slots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: var(--space-3);
  max-height: 300px;
  overflow-y: auto;
}

.time-slot {
  padding: var(--space-3);
  text-align: center;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: white;
  font-weight: 500;
}

.time-slot:hover {
  border-color: var(--primary-color);
  background-color: rgba(0, 102, 204, 0.05);
}

.time-slot.selected {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.time-slot.unavailable {
  background-color: var(--gray-100);
  color: var(--gray-400);
  cursor: not-allowed;
  border-color: var(--gray-200);
}

.no-date-selected,
.no-slots {
  text-align: center;
  color: var(--gray-500);
  font-style: italic;
  grid-column: 1 / -1;
}

/* --- Confirmation Styles --- */
.confirmation-card {
  text-align: center;
  padding: var(--space-8);
}

.confirmation-header {
  margin-bottom: var(--space-8);
}

.check-icon {
  width: 80px;
  height: 80px;
  color: var(--success-color);
  margin: 0 auto var(--space-6);
}

.confirmation-header h3 {
  color: var(--success-color);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-4);
}

.confirmation-number-display {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--primary-color);
}

.confirmation-details {
  background-color: var(--gray-50);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  text-align: left;
  margin-bottom: var(--space-8);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--gray-200);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  font-weight: 600;
  color: var(--gray-700);
}

.detail-value {
  color: var(--gray-900);
}

.confirmation-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Responsive Design --- */
@media (min-width: 768px) {
  .form-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .scheduler-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .progress-indicator {
    gap: var(--space-16);
  }
  
  .progress-step {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .form-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .time-slots {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --- Custom Checkbox & Radio Styles --- */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  margin: 0;
}

/* --- Form Validation States --- */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: var(--error-color);
  background-color: rgba(239, 68, 68, 0.05);
}

.form-group.success input,
.form-group.success select,
.form-group.success textarea {
  border-color: var(--success-color);
  background-color: rgba(16, 185, 129, 0.05);
}

/* --- Loading States & Animations --- */
.loading-state {
  text-align: center;
  color: var(--gray-500);
  font-style: italic;
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 150px;
}

.loader {
  border: 4px solid var(--gray-200);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin-bottom: var(--space-4);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* --- Notifications --- */
.notification {
  /* This is defined with inline styles in JS but here's a template for a static CSS version */
  /* This is a visual-only section, the code is primarily in JS. */
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  color: white;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.notification-success {
  background-color: var(--success-color);
}

.notification-error {
  background-color: var(--error-color);
}

.notification-close {
  background: none;
  border: none;
  color: white;
  font-size: var(--font-size-xl);
  line-height: 1;
  cursor: pointer;
}