/**
 * MODALS & OVERLAYS
 * Version: 37.11.4-PHASE3C-PRIORITY
 * Date: 2025-01-14
 * 
 * All modal dialog windows: share modal, bill text modal, language modal, 
 * generic modal, and loading indicator.
 * 
 * Dependencies:
 * - variables.css (design tokens)
 * - buttons.css (button styles)
 * 
 * Components:
 * - .share-modal - Social sharing modal
 * - .bill-text-modal - Full bill text viewer
 * - .modal-overlay/.modal-container - Generic modal system
 * - .language-modal - Language selection modal
 * - .loading-indicator - Loading spinner overlay
 * 
 * Accessibility:
 * - Keyboard trap (managed by JS)
 * - Focus indicators
 * - ARIA labels (in HTML)
 */

/* ============================================
   SHARE MODAL
   ============================================ */
.share-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  backdrop-filter: blur(4px);
}

.share-modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

.share-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-light);
}

.share-modal-header h3 {
  margin: 0;
  color: var(--text);
}

.share-modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-size-xl);
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.share-modal-close:hover {
  background: var(--background);
  color: var(--text);
}

.share-modal-content {
  padding: var(--space-lg);
}

.share-privacy-note {
  background: rgba(76, 175, 80, 0.1);
  color: var(--success);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--success);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
}

.share-buttons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

@media (min-width: 480px) {
  .share-buttons-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.share-platform-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: white;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  min-height: 80px;
}

.share-platform-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.share-platform-btn i {
  font-size: var(--font-size-2xl);
}

.share-platform-btn.twitter { background: #1DA1F2; }
.share-platform-btn.facebook { background: #1877F2; }
.share-platform-btn.linkedin { background: #0A66C2; }
.share-platform-btn.whatsapp { background: #25D366; }
.share-platform-btn.telegram { background: #0088cc; }
.share-platform-btn.reddit { background: #FF4500; }
.share-platform-btn.email { background: #6B7280; }
.share-platform-btn.sms { background: #10B981; }

.share-copy-section {
  display: flex;
  gap: var(--space-sm);
}

.share-copy-input {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--text);
  background: var(--background);
}

.share-copy-btn {
  padding: var(--space-sm) var(--space-lg);
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.share-copy-btn:hover {
  background: var(--primary-dark);
}

/* ============================================
   BILL TEXT MODAL
   ============================================ */
.bill-text-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  backdrop-filter: blur(4px);
}

.bill-text-modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
}

.bill-text-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
}

.bill-text-modal-header h3 {
  margin: 0;
  color: var(--text);
  font-size: var(--font-size-lg);
}

.bill-text-modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-size-xl);
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.bill-text-modal-close:hover {
  background: var(--background);
  color: var(--text);
}

.bill-text-modal-content {
  padding: var(--space-lg);
  overflow-y: auto;
  flex: 1;
}

.bill-full-text {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-lg);
}

.bill-official-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--primary);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-fast);
}

.bill-official-link:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ============================================
   GENERIC MODAL SYSTEM
   ============================================ */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(30, 24, 18, 0.85); /* Warm dark brown overlay */
  z-index: var(--z-modal-backdrop);
  backdrop-filter: blur(6px);
}

.modal-overlay.active {
  display: block;
}

.modal-container {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  /* Background set by consolidated section at end of CSS */
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 95%;
  max-height: 90vh;
  overflow-y: auto;
  z-index: var(--z-modal);
  padding: var(--space-2xl);
  /* Colors set by consolidated section at end of CSS */
}

.modal-container.active {
  display: block;
}

@media (min-width: 768px) {
  .modal-container {
    width: 85%;
  }
}

@media (min-width: 1024px) {
  .modal-container {
    width: 80%;
  }
}

/* ============================================
   LANGUAGE SELECTOR MODAL
   ============================================ */
.language-modal {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  /* Background set by consolidated section at end of CSS */
  border-radius: var(--radius-lg);
  max-width: 400px;
  width: 90%;
  z-index: var(--z-modal);
  overflow: hidden;
}

.language-modal.active {
  display: block;
}

.language-modal-header {
  /* Background and color set by consolidated section at end of CSS */
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.language-modal-title {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: white;
}

.language-modal-title i {
  font-size: var(--font-size-2xl);
  color: var(--secondary);
}

.language-modal-close {
  background: transparent;
  border: none;
  color: white;
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--space-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.language-modal-close:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.1);
}

.language-modal-close:focus {
  outline: 2px solid white;
  outline-offset: 2px;
  background: rgba(255, 255, 255, 0.15);
}

.language-modal-content {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.language-option {
  /* Background and colors set by consolidated section at end of CSS */
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  text-align: left;
}

.language-option:hover {
  /* Hover styles set by consolidated section at end of CSS */
  transform: translateX(6px);
}

.language-option:active {
  transform: translateX(6px) scale(0.98);
  border-color: var(--secondary-dark);
}

.language-option:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.language-flag {
  font-size: var(--font-size-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
}

.language-name {
  flex: 1;
  font-size: var(--font-size-lg);
}

/* Mobile optimization */
@media (max-width: 480px) {
  .language-modal {
    width: 95%;
    max-width: none;
  }
  
  .language-modal-header {
    padding: var(--space-md) var(--space-lg);
  }
  
  .language-modal-title {
    font-size: var(--font-size-lg);
  }
  
  .language-modal-content {
    padding: var(--space-lg);
  }
  
  .language-option {
    padding: var(--space-md) var(--space-lg);
  }
}

/* ============================================
   LOADING INDICATOR
   ============================================ */
.loading-indicator {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--surface);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-modal);
  text-align: center;
}

.loading-indicator.active {
  display: block;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--space-md);
}

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