/* Questions Editor Styles - Optimized with CSS Variables */

:root {
  --bg-dark: #2a2a2a;
  --bg-card: #3a3a3a;
  --bg-input: #4a4a4a;
  --bg-hover: #5a5a5a;
  --text-primary: #f0f0f0;
  --text-secondary: #e0e0e0;
  --text-muted: #b0b0b0;
  --text-dim: #d0d0d0;
  --border-color: #555;
  --accent: #7a9ba8;
  --accent-hover: #8aabbf;
  --success: #5a7a6a;
  --success-hover: #6a8a7a;
  --danger: #b84a4a;
  --danger-hover: #c85a5a;
  --danger-soft: #7a5a5a;
  --radius-sm: 4px;
  --radius-md: 5px;
  --radius-lg: 10px;
  --radius-xl: 15px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-dark);
  padding: 20px;
  min-height: 100vh;
}

/* Layout */
.container { max-width: 1400px; margin: 0 auto; }
.header { text-align: center; color: var(--text-secondary); margin-bottom: 30px; }
.header h1 { font-size: 2.5em; margin-bottom: 10px; color: var(--text-primary); }

/* Common input styles */
input, select, textarea {
  padding: 10px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: var(--bg-dark);
  color: var(--text-secondary);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

/* Common button styles */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 14px;
  transition: background 0.3s;
}
.btn-accent { background: var(--accent); color: var(--text-primary); }
.btn-accent:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); color: var(--text-primary); }
.btn-success:hover { background: var(--success-hover); }
.btn-danger { background: var(--danger); color: #fff0f0; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-muted { background: var(--bg-hover); color: var(--text-secondary); }
.btn-muted:hover { background: #6a6a6a; }
.btn:disabled { background: var(--bg-input); cursor: not-allowed; opacity: 0.5; }

/* Stats & Filters */
.stats {
  background: var(--bg-card);
  padding: 15px;
  border-radius: var(--radius-lg);
  margin-bottom: 30px;
  color: var(--text-dim);
  text-align: center;
}

.filters {
  background: var(--bg-card);
  padding: 20px;
  border-radius: var(--radius-lg);
  margin-bottom: 30px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.3);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.filters input { flex: 1; min-width: 200px; }
.filters select { min-width: 150px; }

.approved-filter-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  background: var(--bg-dark);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  user-select: none;
  transition: all 0.2s;
  white-space: nowrap;
}
.approved-filter-label:hover { border-color: var(--accent); background: var(--bg-card); }
.approved-filter-label input[type="checkbox"] { width: 18px; height: 18px; cursor: pointer; margin: 0; min-width: 18px; }
.approved-filter-label span { font-size: 14px; color: var(--text-secondary); }

/* Editable fields */
.editable {
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
  color: var(--text-primary);
  background: var(--bg-input);
}
.editable:hover { background: var(--bg-hover); }
.editable:focus { outline: 2px solid var(--accent); background: var(--bg-input); }

.hint .editable, .option .editable, .explanation .editable {
  background: transparent;
  padding: 2px 4px;
  color: inherit;
}
.hint .editable:hover, .option .editable:hover, .explanation .editable:hover { background: rgba(255,255,255,0.1); }
.hint .editable:focus, .option .editable:focus, .explanation .editable:focus {
  background: rgba(255,255,255,0.15);
  outline: 2px solid rgba(138,155,168,0.7);
}

/* Question cards */
.questions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 20px;
}

.question-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.5);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.question-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0,0,0,0.7);
}

.question-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 14px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
}
.question-image img { width: 100%; height: 100%; object-fit: cover; }
.question-image:hover::after {
  content: '✏️ Редактировать URL';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-size: 12px;
  pointer-events: none;
}

.question-content { padding: 20px; }
.question-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  gap: 10px;
}
.question-header-row select {
  padding: 6px 10px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-dark);
  color: var(--text-secondary);
  font-size: 14px;
}
.category-select { flex: 1; }
.difficulty-select-compact { min-width: 60px; text-align: center; }

.question-text {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text-primary);
  line-height: 1.5;
  background: var(--bg-input);
  padding: 10px;
  border-radius: var(--radius-md);
}

.question-options { margin-bottom: 15px; position: relative; }
.option {
  padding: 8px 12px;
  margin: 5px 0;
  border-radius: var(--radius-md);
  background: var(--bg-input);
  font-size: 14px;
  color: var(--text-secondary);
}
.option.correct {
  background: var(--success);
  border-left: 4px solid #7a9a8a;
  font-weight: 600;
}

.shuffle-btn {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-hover);
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-md);
  padding: 8px 10px;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.3s, transform 0.3s;
}
.shuffle-btn:hover { background: var(--accent); transform: translateY(-50%) rotate(180deg); }
.shuffle-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Meta badges */
.question-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid #eee;
}
.meta-badge { padding: 5px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.category { background: #6b7d8f; color: var(--text-primary); }
.difficulty { background: var(--bg-input); color: var(--text-secondary); }
.difficulty-1 { background: var(--success); color: #d0e0d0; }
.difficulty-2 { background: #7a7a5a; color: #e0e0c0; }
.difficulty-3 { background: #8a7a5a; color: #e0d0c0; }
.difficulty-4 { background: #7a5a5a; color: #e0c0c0; }
.difficulty-5 { background: #6a4a4a; color: #f0d0d0; }

.explanation {
  margin-top: 15px;
  padding: 12px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: #c0c0c0;
  border-left: 3px solid var(--accent);
}

/* Image navigation */
.question-image-container { position: relative; margin-bottom: 10px; }
.alternative-image-nav { display: flex; gap: 8px; margin-top: 8px; }
.alternative-image-btn {
  flex: 1;
  padding: 10px 12px;
  background: var(--accent);
  color: var(--text-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 20px;
  font-weight: bold;
  transition: background 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.alternative-image-btn:hover { background: var(--accent-hover); }
.alternative-image-btn:disabled { background: var(--bg-input); cursor: not-allowed; opacity: 0.5; }

.giphy-tags-container { margin-top: 8px; display: flex; flex-direction: column; gap: 5px; }
.giphy-tags-label { font-size: 12px; color: var(--text-muted); font-weight: bold; }
.giphy-tags-input {
  width: 100%;
  padding: 6px 10px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13px;
  background: var(--bg-dark);
  color: var(--text-secondary);
}
.giphy-tags-input:disabled { background: var(--bg-card); cursor: not-allowed; }

/* Actions */
.actions-row { display: flex; justify-content: space-between; align-items: center; margin-top: 15px; gap: 8px; }
.delete-btn-small {
  background: var(--danger);
  color: #fff0f0;
  border: none;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 11px;
  transition: background 0.3s;
}
.delete-btn-small:hover { background: var(--danger-hover); }

.rephrase-btn-main {
  background: var(--accent);
  color: var(--text-primary);
  border: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
  transition: background 0.3s;
}
.rephrase-btn-main:hover { background: var(--accent-hover); }

.ai-prompt-input {
  width: 100%;
  padding: 6px 10px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 12px;
  background: var(--bg-dark);
  color: var(--text-secondary);
  margin-top: 8px;
}
.ai-prompt-input::placeholder { color: #888; }

.approved-toggle { display: flex; align-items: center; gap: 8px; padding: 8px; border-radius: var(--radius-md); margin-top: 10px; }
.approved-toggle input[type="checkbox"] { width: 20px; height: 20px; cursor: pointer; }
.approved-toggle label { cursor: pointer; font-weight: bold; font-size: 13px; }

.option-select {
  padding: 4px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  background: var(--bg-dark);
  color: var(--text-secondary);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  justify-content: center;
  align-items: center;
}
.modal-content {
  background: var(--bg-card);
  padding: 30px;
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 90%;
  box-shadow: 0 4px 20px rgba(0,0,0,0.7);
}
.modal-content h3 { margin-bottom: 20px; color: var(--text-secondary); }
.modal-content input { width: 100%; margin-bottom: 20px; }
.modal-buttons { display: flex; gap: 10px; justify-content: flex-end; }
.modal-buttons .save-btn { background: var(--accent); color: var(--text-primary); }
.modal-buttons .save-btn:hover { background: var(--accent-hover); }
.modal-buttons .cancel-btn { background: var(--bg-hover); color: var(--text-secondary); }
.modal-buttons .cancel-btn:hover { background: #6a6a6a; }

/* Save indicator */
.save-indicator {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--success);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  display: none;
  z-index: 2000;
  box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin: 30px 0;
  padding: 20px;
}
.pagination button {
  padding: 10px 20px;
  background: var(--accent);
  color: var(--text-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 16px;
  transition: background 0.3s;
}
.pagination button:hover:not(:disabled) { background: var(--accent-hover); }
.pagination button:disabled { background: var(--bg-input); cursor: not-allowed; }
.pagination #page-info, .pagination #page-info-top { font-size: 16px; color: var(--text-secondary); }

.no-results { text-align: center; padding: 40px; color: var(--text-dim); font-size: 18px; }

/* Login */
.login-screen {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: var(--bg-dark);
}
.login-form {
  background: var(--bg-card);
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 30px rgba(0,0,0,0.7);
  max-width: 400px;
  width: 90%;
  text-align: center;
}
.login-form h2 { margin-bottom: 10px; color: var(--text-secondary); font-size: 24px; }
.login-form p { margin-bottom: 25px; color: var(--text-muted); font-size: 14px; }
.login-error { color: #e08080; margin-top: 10px; font-size: 14px; display: none; }

.google-signin-btn {
  width: 100%;
  padding: 12px;
  background: #4285f4;
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: background 0.2s;
  text-decoration: none;
}
.google-signin-btn:hover { background: #3574e0; }

.main-content { display: none; }
.main-content.authenticated { display: block; }

/* Tabs */
.tab-nav { display: flex; gap: 10px; margin-bottom: 20px; border-bottom: 2px solid var(--bg-input); padding-bottom: 10px; }
.tab-btn {
  padding: 10px 20px;
  background: var(--bg-card);
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}
.tab-btn:hover { background: var(--bg-input); }
.tab-btn.active { background: var(--accent); color: var(--text-primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Prompts */
.prompts-container { display: flex; flex-direction: column; gap: 30px; }
.prompt-section { background: var(--bg-card); padding: 20px; border-radius: var(--radius-lg); }
.prompt-section h3 { color: var(--text-secondary); margin-bottom: 15px; display: flex; align-items: center; gap: 10px; }
.prompt-textarea {
  width: 100%;
  min-height: 200px;
  padding: 15px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-family: monospace;
  background: var(--bg-dark);
  color: var(--text-secondary);
  resize: vertical;
}
.prompt-actions { display: flex; gap: 10px; margin-top: 15px; }
.prompt-btn { padding: 10px 20px; border: none; border-radius: var(--radius-md); cursor: pointer; font-size: 14px; transition: background 0.3s; }
.prompt-btn.save { background: var(--success); color: var(--text-primary); }
.prompt-btn.save:hover { background: var(--success-hover); }
.prompt-btn.reset { background: var(--danger-soft); color: var(--text-primary); }
.prompt-btn.reset:hover { background: #8a6a6a; }
.prompt-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.prompt-status { font-size: 12px; color: var(--text-muted); margin-top: 10px; }
.prompt-status.modified { color: #d0a080; }
.prompt-status.saved { color: #7a9a8a; }

/* Responsive */
@media (max-width: 768px) {
  .questions-grid { grid-template-columns: 1fr; }
}


/* ============================================
   ANALYTICS DASHBOARD STYLES
   Requirements: 4.2, 4.3, 4.4, 4.5, 4.6, 6.2
   ============================================ */

/* Analytics Loading Spinner */
.analytics-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  gap: 15px;
  color: var(--text-muted);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--bg-input);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Analytics Error */
.analytics-error {
  background: var(--danger-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.analytics-error-message {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  color: var(--text-primary);
}

/* Analytics Filters */
.analytics-filters {
  display: flex;
  gap: 20px;
  margin-bottom: 25px;
  padding: 15px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
}

.analytics-filter-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.analytics-filter-group label {
  color: var(--text-muted);
  font-size: 14px;
}

.analytics-filter-group input[type="date"] {
  padding: 8px 12px;
  background: var(--bg-dark);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
}

.analytics-filter-group input[type="date"]:focus {
  border-color: var(--accent);
  outline: none;
}

/* Analytics Sections */
.analytics-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.analytics-section h3 {
  color: var(--text-secondary);
  margin-bottom: 15px;
  font-size: 16px;
}

.analytics-row {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
}

.analytics-section-half {
  flex: 1;
  min-width: 300px;
}

/* Analytics Cards Grid */
.analytics-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
}

.analytics-card {
  background: var(--bg-input);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.analytics-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.analytics-card-highlight {
  background: var(--accent);
}

.analytics-card-icon {
  font-size: 24px;
  margin-bottom: 8px;
}

.analytics-card-value {
  font-size: 28px;
  font-weight: bold;
  color: var(--text-primary);
  margin-bottom: 5px;
}

.analytics-card-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.analytics-card-placeholder {
  color: var(--text-muted);
  padding: 30px;
  text-align: center;
}

/* Activity Chart (CSS Bar Chart) */
.analytics-chart {
  min-height: 200px;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 180px;
  padding: 10px 0;
  gap: 8px;
}

.chart-bar-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  max-width: 60px;
}

.chart-bar {
  width: 100%;
  background: linear-gradient(to top, var(--accent), var(--accent-hover));
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  min-height: 5px;
  position: relative;
  transition: height 0.3s ease;
}

.chart-bar:hover {
  background: linear-gradient(to top, var(--accent-hover), #9abbcf);
}

.chart-bar-value {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
}

.chart-bar-label {
  margin-top: 8px;
  font-size: 11px;
  color: var(--text-muted);
}

/* Retention Funnel */
.analytics-funnel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 0;
}

.funnel-stage {
  display: flex;
  align-items: center;
  gap: 15px;
}

.funnel-bar {
  height: 40px;
  width: var(--funnel-width, 100%);
  border-radius: var(--radius-md);
  transition: width 0.5s ease;
}

.funnel-d1 {
  background: linear-gradient(to right, #5a9a7a, #7aba9a);
}

.funnel-d7 {
  background: linear-gradient(to right, var(--accent), var(--accent-hover));
}

.funnel-d30 {
  background: linear-gradient(to right, #8a7a5a, #aa9a7a);
}

.funnel-label {
  display: flex;
  flex-direction: column;
  min-width: 80px;
}

.funnel-day {
  font-size: 14px;
  font-weight: bold;
  color: var(--text-secondary);
}

.funnel-value {
  font-size: 20px;
  font-weight: bold;
  color: var(--text-primary);
}

/* Analytics Tables */
.analytics-table-container {
  overflow-x: auto;
}

.analytics-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.analytics-table th,
.analytics-table td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.analytics-table th {
  background: var(--bg-input);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
}

.analytics-table th.sortable {
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}

.analytics-table th.sortable:hover {
  background: var(--bg-hover);
}

.analytics-table td {
  color: var(--text-secondary);
}

.analytics-table tbody tr:hover {
  background: var(--bg-input);
}

.analytics-table .text-right {
  text-align: right;
}

.question-text-cell {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Analytics Pagination */
.analytics-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid var(--border-color);
}

.analytics-pagination span {
  color: var(--text-muted);
  font-size: 14px;
}

/* No Data Message */
.analytics-no-data {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-style: italic;
}

/* Poll Category Bar Chart */
.analytics-bar-container {
  width: 100%;
  height: 20px;
  background: var(--bg-dark);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.analytics-bar {
  height: 100%;
  background: linear-gradient(to right, var(--accent), var(--accent-hover));
  border-radius: var(--radius-sm);
  transition: width 0.3s ease;
}

/* Responsive Design */
@media (max-width: 900px) {
  .analytics-row {
    flex-direction: column;
  }
  
  .analytics-section-half {
    min-width: 100%;
  }
  
  .analytics-cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  }
  
  .analytics-card-value {
    font-size: 22px;
  }
  
  .chart-bars {
    height: 150px;
  }
}

@media (max-width: 600px) {
  .analytics-filters {
    flex-direction: column;
    gap: 10px;
  }
  
  .analytics-filter-group {
    width: 100%;
  }
  
  .analytics-filter-group input[type="date"] {
    flex: 1;
  }
  
  .analytics-table {
    font-size: 12px;
  }
  
  .analytics-table th,
  .analytics-table td {
    padding: 8px 10px;
  }
  
  .question-text-cell {
    max-width: 150px;
  }
}