/**
 * dashboard.css - стили для дашборда админ-панели "Читатель"
 * Книжная тематика с золотыми акцентами + исправления для Chart.js
 */

/* ========================================
   ЗАГОЛОВОК ДАШБОРДА
   ======================================== */

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.dashboard-header h2 {
  margin: 0;
  color: var(--reader-gold);
  font-family: var(--font-heading);
  font-size: 2rem;
  text-shadow: 0 0 10px var(--reader-gold-glow);
}

.date-range-picker {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.date-range-picker label {
  margin-bottom: 0;
  color: var(--text-light);
  font-weight: 500;
}

/* ========================================
   ДОПОЛНИТЕЛЬНЫЕ ЭЛЕМЕНТЫ УПРАВЛЕНИЯ
   ======================================== */

.dashboard-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.refresh-btn, .export-btn {
  background: var(--reader-gold);
  color: var(--bg-dark);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.refresh-btn:hover, .export-btn:hover {
  background: var(--reader-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(212, 175, 55, 0.3);
}

.refresh-btn:active, .export-btn:active {
  transform: translateY(0);
}

/* ========================================
   СТАТИСТИЧЕСКИЕ КАРТОЧКИ
   ======================================== */

.stats-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.stat-card:hover {
  border-color: var(--reader-gold);
  box-shadow: var(--box-shadow-glow);
  transform: translateY(-2px);
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.stat-header h3 {
  font-size: 0.9rem;
  color: var(--text-light);
  margin: 0;
  font-family: var(--font-primary);
  font-weight: 500;
  line-height: 1.4;
}

.stat-icon {
  font-size: 1.5rem;
  opacity: 0.7;
  color: var(--reader-gold);
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--reader-gold), var(--reader-gold-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  transition: all var(--transition-normal);
}

.stat-value.updated {
  animation: statUpdate 1s ease-out;
}

@keyframes statUpdate {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.stat-value.loading {
  opacity: 0.5;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.7; }
}

.stat-change {
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-weight: 500;
}

.stat-change.positive {
  color: var(--success-color);
}

.stat-change.negative {
  color: var(--error-color);
}

.stat-change::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
}

.stat-change.positive::before {
  border-bottom: 4px solid var(--success-color);
}

.stat-change.negative::before {
  border-top: 4px solid var(--error-color);
}

/* Анимация для карточек статистики */
.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--reader-gold), var(--reader-brown), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.stat-card:hover::after {
  opacity: 1;
  animation: readerGlowPulse 2s infinite alternate;
}

@keyframes readerGlowPulse {
  0% {
    box-shadow: 0 0 5px var(--reader-gold-glow);
  }
  100% {
    box-shadow: 0 0 15px var(--reader-gold-glow), 0 0 25px var(--reader-gold-glow);
  }
}

/* ========================================
   ГРАФИКИ И ДИАГРАММЫ - ИСПРАВЛЕНО
   ======================================== */

.dashboard-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.chart-container {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  height: 400px;
  position: relative;
  transition: all var(--transition-normal);
}

.chart-container:hover {
  border-color: var(--reader-gold);
  box-shadow: var(--box-shadow-glow);
}

.chart-container h3 {
  margin-bottom: 1rem;
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-white);
  font-family: var(--font-heading);
}

.chart-full-width {
  grid-column: 1 / -1;
  height: 450px;
}

/* ИСПРАВЛЕНИЕ Chart.js canvas */
.chart-container canvas {
  max-width: 100% !important;
  max-height: calc(100% - 60px) !important;
  width: auto !important;
  height: auto !important;
}

.chart {
  width: 100%;
  height: calc(100% - 60px);
  background: rgba(26, 26, 26, 0.5);
  border-radius: var(--border-radius);
  overflow: hidden;
  position: relative;
}

.chart-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--text-muted);
  font-style: italic;
}

/* Ошибка графика - НОВОЕ */
.chart-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: calc(100% - 60px);
  color: var(--error-color);
  text-align: center;
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  background: rgba(231, 76, 60, 0.1);
  border-radius: var(--border-radius);
  border: 1px solid var(--error-color);
  padding: 2rem;
}

.chart-error i {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.7;
}

.chart-error p {
  margin-bottom: 1rem;
  font-size: 1rem;
  color: var(--text-light);
}

.chart-error .btn {
  margin-top: 0.5rem;
}

/* Пустой график */
.empty-chart {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: calc(100% - 60px);
  color: var(--text-muted);
  text-align: center;
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  background: rgba(26, 26, 26, 0.3);
  border-radius: var(--border-radius);
  border: 1px dashed var(--border-color);
}

.empty-chart-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
  color: var(--reader-gold);
}

.empty-chart-message {
  font-size: 1rem;
  font-style: italic;
  color: var(--text-light);
}

/* Loading состояние для контейнеров графиков */
.chart-container.loading {
  opacity: 0.6;
}

.chart-container.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  border: 3px solid var(--text-muted);
  border-top: 3px solid var(--reader-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  z-index: 10;
}

/* ========================================
   ТОП КОНТЕНТ
   ======================================== */

.top-content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.top-content-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  transition: all var(--transition-normal);
}

.top-content-card:hover {
  border-color: var(--reader-gold);
  box-shadow: var(--box-shadow-glow);
}

.top-content-card h3 {
  margin-bottom: 1rem;
  color: var(--text-white);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  text-align: center;
}

.top-content-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.top-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem;
  background: var(--hover-bg);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.top-item:hover {
  background: var(--hover-bg);
  border-color: var(--reader-gold);
  transform: translateX(2px);
}

.top-item .rank {
  font-weight: bold;
  color: var(--reader-gold);
  font-size: 1.1rem;
  margin-right: 1rem;
  min-width: 30px;
}

.top-item .name {
  flex: 1;
  color: var(--text-white);
  font-weight: 500;
}

.top-item .count {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.popular-quotes-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.popular-quote {
  padding: 1rem;
  background: var(--hover-bg);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.popular-quote:hover {
  border-color: var(--reader-gold);
  background: rgba(212, 175, 55, 0.05);
}

.quote-text {
  color: var(--text-white);
  font-style: italic;
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
  line-height: 1.4;
}

.quote-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.usage-count {
  color: var(--reader-gold);
  font-weight: 500;
}

/* Состояния загрузки и отсутствия данных */
.loading {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.loading::before {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid var(--text-muted);
  border-top: 2px solid var(--reader-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.no-data {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--border-radius);
  border: 1px dashed var(--border-color);
}

/* ========================================
   ПОСЛЕДНИЕ ОБРАЩЕНИЯ
   ======================================== */

.recent-activity-container {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
  transition: all var(--transition-normal);
}

.recent-activity-container:hover {
  border-color: var(--reader-gold);
  box-shadow: var(--box-shadow-glow);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.section-header h3 {
  margin: 0;
  color: var(--text-white);
  font-family: var(--font-heading);
  font-size: 1.2rem;
}

.view-all {
  font-size: 0.9rem;
  color: var(--reader-gold);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.view-all:hover {
  color: var(--reader-gold-light);
  text-shadow: 0 0 5px var(--reader-gold-glow);
}

/* Специфические стили для таблицы на дашборде */
.recent-activity-container .data-table {
  font-size: 0.9rem;
}

.recent-activity-container .data-table th {
  background: rgba(212, 175, 55, 0.1);
  color: var(--text-white);
  font-weight: 600;
}

.recent-activity-container .data-table td {
  padding: 0.75rem 1rem;
  color: var(--text-light);
}

.recent-activity-container .data-table tr:hover {
  background: rgba(212, 175, 55, 0.05);
}

/* ========================================
   УВЕДОМЛЕНИЯ - УЛУЧШЕНО
   ======================================== */

.alert {
  position: relative;
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  gap: 1rem;
  animation: slideIn 0.3s ease-out;
}

.alert-success {
  background-color: rgba(40, 167, 69, 0.1);
  border-color: #28a745;
  color: #d4edda;
}

.alert-danger {
  background-color: rgba(220, 53, 69, 0.1);
  border-color: #dc3545;
  color: #f8d7da;
}

.alert-warning {
  background-color: rgba(255, 193, 7, 0.1);
  border-color: #ffc107;
  color: #ffeaa7;
}

.alert-info {
  background-color: rgba(212, 175, 55, 0.1);
  border-color: var(--reader-gold);
  color: #fff3cd;
}

.alert-dismissible {
  padding-right: 4rem;
}

.btn-close {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  z-index: 2;
  padding: 0;
  background: none;
  border: none;
  font-size: 1.2rem;
  color: inherit;
  opacity: 0.7;
  cursor: pointer;
  transition: opacity 0.15s ease-in-out;
}

.btn-close:hover {
  opacity: 1;
}

/* ========================================
   FALLBACK И DEMO РЕЖИМЫ
   ======================================== */

.fallback-notice {
  background: rgba(255, 193, 7, 0.1);
  border: 1px solid #ffc107;
  color: #ffeaa7;
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.fallback-notice i {
  font-size: 1.5rem;
  color: #ffc107;
}

.demo-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--reader-gold);
  color: var(--bg-dark);
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========================================
   АДАПТИВНОСТЬ
   ======================================== */

@media (max-width: 1200px) {
  .dashboard-charts {
    grid-template-columns: 1fr;
  }
  
  .chart-container {
    height: 350px;
  }
  
  .chart-full-width {
    height: 400px;
  }
  
  .stats-cards {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .date-range-picker {
    width: 100%;
    justify-content: space-between;
  }
  
  .dashboard-controls {
    width: 100%;
    justify-content: space-between;
  }
  
  .stats-cards {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .dashboard-charts {
    grid-template-columns: 1fr;
  }
  
  .chart-container {
    height: 300px;
  }
  
  .chart-full-width {
    height: 350px;
  }
  
  .top-content-grid {
    grid-template-columns: 1fr;
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .stat-card {
    padding: 1rem;
  }
  
  .stat-value {
    font-size: 2rem;
  }
  
  .dashboard-header h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .stats-cards {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .top-content-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .chart-container {
    padding: 1rem;
    height: 250px;
  }
  
  .chart-full-width {
    height: 300px;
  }
  
  .stat-card {
    padding: 1rem;
    text-align: center;
  }
  
  .stat-header {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
  
  .top-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .top-item .rank {
    margin-right: 0;
    align-self: flex-start;
  }
  
  .quote-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
  
  .dashboard-controls {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .refresh-btn, .export-btn {
    width: 100%;
    justify-content: center;
  }
}

/* ========================================
   ДОПОЛНИТЕЛЬНЫЕ ЭФФЕКТЫ
   ======================================== */

/* Анимация появления карточек */
.stat-card,
.chart-container,
.top-content-card,
.recent-activity-container {
  animation: cardFadeIn 0.6s ease-out;
}

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Задержка анимации для карточек статистики */
.stat-card:nth-child(1) { animation-delay: 0.1s; }
.stat-card:nth-child(2) { animation-delay: 0.2s; }
.stat-card:nth-child(3) { animation-delay: 0.3s; }
.stat-card:nth-child(4) { animation-delay: 0.4s; }
.stat-card:nth-child(5) { animation-delay: 0.5s; }
.stat-card:nth-child(6) { animation-delay: 0.6s; }

/* Книжные акценты */
.stat-card::before {
  content: '';
  position: absolute;
  top: 10px;
  right: 10px;
  width: 20px;
  height: 20px;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23d4af37"><path d="M18 2H6C4.9 2 4 2.9 4 4v16c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2zM6 4h5v8l-2.5-1.5L6 12V4z"/></svg>') no-repeat center;
  background-size: contain;
  opacity: 0.1;
}

/* Улучшенные состояния */
.stat-card.loading .stat-value {
  background: linear-gradient(135deg, #666, #999);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.chart-container.error {
  border-color: var(--error-color);
}

.chart-container.empty {
  border-color: var(--text-muted);
  border-style: dashed;
}

/* Улучшенная типография */
.dashboard-title {
  background: linear-gradient(135deg, var(--reader-gold), var(--reader-gold-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* Фокус и accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus {
  outline: 2px solid var(--reader-gold);
  outline-offset: 2px;
}