/* ============================================
   ADMIN PANEL - USANDO MISMA IDENTIDAD VISUAL
   ============================================ */

/* ============================================
   LOGIN SCREEN
   ============================================ */

.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
}

.login-card {
  background: var(--bg-secondary);
  border-radius: 16px;
  box-shadow: 0 4px 6px var(--shadow);
  max-width: 400px;
  width: 100%;
  overflow: hidden;
}

.login-header {
  padding: 32px 32px 24px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.login-header h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.login-header p {
  font-size: 14px;
  color: var(--text-secondary);
}

.login-body {
  padding: 32px;
}

/* ============================================
   ADMIN PANEL LAYOUT
   ============================================ */

.admin-panel {
  max-width: 1400px;
  margin: 0 auto;
}

/* ============================================
   HEADER
   ============================================ */

.admin-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  /* Escapar del contenedor para ocupar todo el ancho */
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  box-sizing: border-box;
}

/* Breadcrumb de navegación */
.admin-breadcrumb {
  background: var(--bg-tertiary);
  padding: 10px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  box-sizing: border-box;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.2s;
}

.breadcrumb-item:hover {
  background: var(--bg-secondary);
  color: var(--accent);
}

.breadcrumb-item.current {
  color: var(--text-primary);
  font-weight: 600;
  pointer-events: none;
}

.breadcrumb-separator {
  color: var(--text-tertiary);
  font-size: 16px;
  user-select: none;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo:hover {
  opacity: 0.9;
}

.logo-img {
  height: 36px;
  width: auto;
}

.logo-accent {
  color: #90100f;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-light, #fee2e2);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 12px;
}

.admin-email {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============================================
   NAVIGATION
   ============================================ */

.admin-nav-container {
  /* Ocultar la barra de navegación - ahora usamos las tarjetas KPI para navegar */
  display: none;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  box-sizing: border-box;
  overflow: hidden;
  transition: max-height 0.3s ease;
  max-height: 60px;
}

.admin-nav-container.collapsed {
  max-height: 0;
  border-bottom: none;
}

.admin-nav {
  display: flex;
  gap: 4px;
  padding: 8px 24px;
  overflow-x: auto;
}

.nav-toggle {
  display: none;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-btn.active {
  background: var(--accent);
  color: white;
}

.nav-btn svg {
  flex-shrink: 0;
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.admin-main {
  min-height: 60vh;
}

.admin-section {
  display: none;
}

.admin-section.active {
  display: block;
}

.section-header {
  margin-bottom: 24px;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.section-description {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ============================================
   KPI CARDS
   ============================================ */

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.kpi-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 2px 4px var(--shadow);
  border: 1px solid var(--border-color);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
  border-color: var(--accent);
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.kpi-content {
  flex: 1;
}

.kpi-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 8px;
}

.kpi-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.kpi-trend {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* Tooltips para KPIs */
.kpi-card.has-kpi-tooltip {
  position: relative;
  cursor: help;
}

.kpi-tooltip {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.5;
  width: 250px;
  text-align: left;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 100;
  margin-top: 10px;
  pointer-events: none;
}

.kpi-tooltip::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-bottom-color: var(--border-color);
}

.kpi-tooltip::after {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 7px solid transparent;
  border-bottom-color: var(--bg-primary);
}

.kpi-card.has-kpi-tooltip:hover .kpi-tooltip {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   CHART CARD
   ============================================ */

.chart-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 32px;
  box-shadow: 0 2px 4px var(--shadow);
  border: 1px solid var(--border-color);
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.chart-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.period-selector {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.period-selector:focus {
  outline: none;
  border-color: var(--accent);
}

.period-selector:hover {
  border-color: var(--accent);
}

.chart-legend {
  display: flex;
  gap: 16px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.chart-body {
  position: relative;
  height: 300px;
}

/* ============================================
   STATS GRID
   ============================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 2px 4px var(--shadow);
  border: 1px solid var(--border-color);
}

.stat-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.stat-content {
  font-size: 14px;
  color: var(--text-secondary);
}

.stat-loading {
  text-align: center;
  padding: 20px;
  color: var(--text-tertiary);
}

/* ============================================
   FILTERS
   ============================================ */

.filters-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: 0 2px 4px var(--shadow);
  border: 1px solid var(--border-color);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 200px;
}

.filter-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.filter-group select,
.filter-group input {
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.2s;
}

.filter-group select:focus,
.filter-group input:focus {
  outline: none;
  border-color: var(--accent);
}

/* ============================================
   TABLE CARD
   ============================================ */

.table-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  box-shadow: 0 2px 4px var(--shadow);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.table-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.table-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.badge {
  padding: 4px 12px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.table-body {
  padding: 24px;
  max-height: 600px;
  overflow-y: auto;
}

/* ============================================
   ENTRIES LIST
   ============================================ */

.entries-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.entry-item {
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 16px;
  border: 1px solid var(--border-color);
  transition: all 0.2s;
  cursor: pointer;
}

.entry-item:hover {
  box-shadow: 0 2px 8px var(--shadow);
  transform: translateY(-2px);
}

.entry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.entry-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.entry-tag {
  padding: 4px 10px;
  background: var(--bg-secondary);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}

.entry-terms-preview {
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
}

.entry-terms-preview strong {
  color: var(--accent);
}

/* Entradas expandibles */
.entrada-expandible {
  transition: all 0.2s;
}

.entrada-header-clickable:hover .entrada-terminos-count {
  background: var(--accent);
  color: white;
}

.entrada-terminos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
}

.entrada-termino-item {
  display: flex;
  flex-direction: column;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  transition: all 0.15s;
}

.entrada-termino-item:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 6px var(--shadow);
}

.entrada-termino-hanzi {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.entrada-termino-lectura {
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 2px;
}

.entrada-termino-significado {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* ============================================
   TÉRMINOS NUEVOS TABLE
   ============================================ */

.terminos-table {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.termino-row {
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 16px 20px;
  border: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 20px;
  align-items: center;
  transition: all 0.2s;
}

.termino-row:hover {
  background: var(--bg-secondary);
  box-shadow: 0 2px 8px var(--shadow);
  transform: translateY(-1px);
}

.termino-hanzi {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  min-width: 60px;
  text-align: center;
}

.termino-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.termino-reading {
  font-size: 14px;
  font-style: italic;
  color: var(--text-secondary);
}

.termino-translation {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
}

.termino-usos {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 50px;
  text-align: center;
}

.termino-usos-label {
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.popularity-badge {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  min-width: 80px;
  text-align: center;
}

.popularity-badge.high {
  background: #dcfce7;
  color: #16a34a;
}

.popularity-badge.medium {
  background: #fef3c7;
  color: #d97706;
}

.popularity-badge.low {
  background: #fee2e2;
  color: #dc2626;
}

[data-theme="dark"] .popularity-badge.high {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
}

[data-theme="dark"] .popularity-badge.medium {
  background: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
}

[data-theme="dark"] .popularity-badge.low {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.stat-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

/* ============================================
   LOADING STATE
   ============================================ */

.loading-state {
  text-align: center;
  padding: 60px 20px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

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

.loading-state p {
  color: var(--text-tertiary);
  font-size: 14px;
}

/* ============================================
   COMING SOON
   ============================================ */

.coming-soon {
  text-align: center;
  padding: 100px 20px;
}

.coming-soon svg {
  color: var(--text-tertiary);
  margin-bottom: 24px;
  opacity: 0.5;
}

.coming-soon h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.coming-soon p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ============================================
   BUTTONS (usando mismos estilos que app principal)
   ============================================ */

.btn-primary {
  background: var(--accent);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: var(--bg-primary);
}

.btn-icon {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* ============================================
   USUARIOS - PERFIL
   ============================================ */

.perfil-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.user-profile-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 2px 4px var(--shadow);
  border: 1px solid var(--border-color);
}

.user-info-header {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.user-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  flex-shrink: 0;
}

.user-details {
  flex: 1;
}

.user-details h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.user-uid {
  font-size: 13px;
  color: var(--text-tertiary);
  font-family: monospace;
  margin: 0 0 12px 0;
}

.user-badges {
  display: flex;
  gap: 8px;
}

.badge-nivel,
.badge-idioma {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.badge-nivel {
  background: var(--accent-light);
  color: var(--accent);
}

.badge-idioma {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.user-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
}

.user-stat {
  text-align: center;
}

.user-stat .stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.user-stat .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* User stat interactivo (hover/click) */
.user-stat-interactive {
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 12px;
  margin: -12px;
  border-radius: 8px;
}

.user-stat-interactive:hover {
  background: var(--bg-tertiary);
  transform: translateY(-2px);
}

/* Tooltips personalizados para stats */
.user-stat.has-tooltip {
  position: relative;
}

.stat-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.4;
  width: 220px;
  text-align: left;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 100;
  margin-bottom: 10px;
  pointer-events: none;
}

.stat-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-top-color: var(--bg-primary);
}

.user-stat.has-tooltip:hover .stat-tooltip {
  opacity: 1;
  visibility: visible;
}

.user-stat-interactive:hover .stat-value {
  color: var(--accent-hover);
}

.user-stat-interactive:hover .stat-label {
  color: var(--text-primary);
}

/* ============================================
   USUARIOS - TABS
   ============================================ */

.profile-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  background: var(--bg-secondary);
  padding: 8px;
  border-radius: 12px;
  box-shadow: 0 2px 4px var(--shadow);
  border: 1px solid var(--border-color);
}

.profile-tab {
  flex: 1;
  padding: 12px 20px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  white-space: nowrap;
}

.profile-tab:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.profile-tab.active {
  background: var(--accent);
  color: white;
}

.profile-tab-content {
  display: none;
}

.profile-tab-content.active {
  display: block;
}

/* ============================================
   USUARIOS - TABLA DE USUARIOS
   ============================================ */

.user-row {
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 16px 20px;
  border: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 20px;
  align-items: center;
  transition: all 0.2s;
  margin-bottom: 12px;
  cursor: pointer;
}

.user-row:hover {
  background: var(--bg-secondary);
  box-shadow: 0 2px 8px var(--shadow);
  transform: translateY(-1px);
}

.user-row-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 200px;
}

.user-row-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.user-row-email-text {
  font-size: 12px;
  color: var(--text-tertiary);
}

.user-row-actividad {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.user-row-actividad .actividad-item {
  cursor: help;
  padding: 2px 6px;
  border-radius: 4px;
  transition: background 0.2s;
}

.user-row-actividad .actividad-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.user-row-stat.clickable {
  cursor: pointer;
  transition: all 0.2s;
  padding: 8px;
  margin: -8px;
  border-radius: 8px;
}

.user-row-stat.clickable:hover {
  background: var(--bg-tertiary);
}

.user-row-stat.clickable:hover .user-row-stat-value {
  color: var(--accent-hover);
}

.user-row-stat {
  text-align: center;
}

.user-row-stat-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 2px;
}

.user-row-stat-label {
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.user-row-action {
  padding: 8px 16px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.user-row-action:hover {
  opacity: 0.9;
}

.user-row-action-detail {
  padding: 8px 12px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-size: 16px;
}

.user-row-action-detail:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ============================================
   USUARIOS - TABLA DE VOCABULARIO
   ============================================ */

.vocab-table {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vocab-row {
  background: var(--bg-tertiary);
  border-radius: 6px;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: auto 1.5fr 1.5fr auto auto auto;
  gap: 16px;
  align-items: center;
  font-size: 14px;
}

.vocab-row:hover {
  background: var(--bg-secondary);
}

.vocab-hanzi {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  min-width: 50px;
  text-align: center;
}

.vocab-reading {
  color: var(--text-secondary);
  font-style: italic;
}

.vocab-esp {
  color: var(--text-primary);
}

.vocab-nivel {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
}

.vocab-usos {
  text-align: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
}

.vocab-origen {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  text-align: center;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .admin-header {
    flex-direction: column;
    gap: 16px;
  }

  .header-left,
  .header-right {
    width: 100%;
    justify-content: space-between;
  }

  .admin-nav {
    flex-wrap: wrap;
  }

  .kpi-grid {
    grid-template-columns: 1fr;
  }

  .filters-card {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-group {
    min-width: 100%;
  }

  .chart-body {
    height: 250px;
  }
}

/* ============================================
   PERFIL DETALLADO DEL ESTUDIANTE
   ============================================ */

.perfil-breadcrumb {
  margin-bottom: 20px;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-back:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.perfil-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Card unificada del estudiante */
.perfil-student-card-unified {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Header del estudiante (avatar + info horizontal) */
.perfil-student-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.perfil-student-info {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.perfil-avatar {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 22px;
}

/* Grid unificado: 12 columnas para metadata y 3 botones */
.perfil-unified-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 12px;
  align-items: stretch;
}

/* Botones de acción - ocupan 4 columnas cada uno (3 botones * 4 cols = 12) */
.perfil-action-btn {
  grid-column: span 4;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 12px 16px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.perfil-action-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.perfil-action-btn:hover * {
  color: white !important;
}

.perfil-action-btn:hover .perfil-action-btn-icon svg {
  stroke: white;
}

.perfil-action-btn:hover .perfil-vocab-stat-mini {
  background: rgba(255, 255, 255, 0.2) !important;
  color: white !important;
}

.perfil-action-btn-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.perfil-action-btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.perfil-action-btn-icon svg {
  width: 18px;
  height: 18px;
}

.perfil-action-btn-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}

.perfil-action-btn-arrow {
  font-size: 14px;
  color: var(--text-tertiary);
}

.perfil-action-btn-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.perfil-action-stat {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.perfil-action-stat-secondary {
  font-size: 12px;
  color: var(--text-secondary);
}

.perfil-nombre {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 2px;
  line-height: 1.2;
}

.perfil-email {
  font-size: 13px;
  color: var(--text-secondary);
  word-break: break-all;
}

.perfil-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  text-align: left;
}

.perfil-meta-item {
  grid-column: span 3;
  padding: 12px;
  background: var(--bg-tertiary);
  border-radius: 10px;
}

.perfil-meta-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.perfil-meta-value {
  font-size: 14px;
  font-weight: 600;
}

/* Última actividad clickable - toda la tarjeta */
.perfil-meta-item.clickable {
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
}

.perfil-meta-item.clickable:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(144, 16, 15, 0.1);
}

.perfil-meta-item.clickable .perfil-meta-value {
  color: var(--accent);
  font-weight: 700;
}

.perfil-meta-item.clickable:hover .perfil-meta-value {
  color: var(--accent);
}

/* Meta items con anchos variables */
.perfil-meta-small {
  grid-column: span 2;
}

.perfil-meta-rachas {
  grid-column: span 6;
}

/* Rachas section */
.perfil-meta-item .perfil-meta-label {
  display: flex;
  align-items: center;
  gap: 4px;
}

.perfil-info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  cursor: help;
  transition: color 0.2s;
}

.perfil-info-icon:hover {
  color: var(--accent);
}

.perfil-rachas-grid {
  display: flex;
  gap: 16px;
  margin-top: 4px;
}

.perfil-racha-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 50px;
}

.perfil-racha-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.perfil-racha-label {
  font-size: 10px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* Progress Card */
.perfil-progress-card {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.perfil-card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.perfil-plan-name {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border-radius: 8px;
}

.perfil-big-progress {
  text-align: center;
  margin-bottom: 20px;
}

.perfil-big-progress-value {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
}

.perfil-big-progress-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.perfil-progress-bar {
  height: 12px;
  background: var(--bg-tertiary);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 20px;
}

.perfil-progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, #10b981 100%);
  border-radius: 6px;
  transition: width 0.5s;
}

.perfil-progress-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.perfil-progress-stat {
  text-align: center;
  padding: 12px 8px;
  background: var(--bg-tertiary);
  border-radius: 10px;
}

.perfil-progress-stat-value {
  font-size: 20px;
  font-weight: 700;
}

.perfil-progress-stat-label {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.perfil-progress-stat.mastered { color: #10b981; }
.perfil-progress-stat.easy { color: #3b82f6; }
.perfil-progress-stat.normal { color: #f59e0b; }
.perfil-progress-stat.hard { color: #ef4444; }

/* Content */
.perfil-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Activity Card */
.perfil-activity-card {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-color);
}

.perfil-activity-graph {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  height: 120px;
  padding: 0 8px;
  margin-bottom: 12px;
}

.perfil-activity-bar {
  flex: 1;
  max-width: 40px;
  background: var(--accent-light);
  border-radius: 4px 4px 0 0;
  margin: 0 4px;
  position: relative;
  transition: all 0.2s;
  min-height: 4px;
}

.perfil-activity-bar:hover {
  background: var(--accent);
}

.perfil-activity-bar.today {
  background: var(--accent);
}

.perfil-activity-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-tertiary);
  padding: 0 8px;
}

/* Difficult Characters Card */
.perfil-difficult-card {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-color);
}

.perfil-difficult-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.perfil-difficult-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-tertiary);
  border-radius: 12px;
}

.perfil-difficult-char {
  font-size: 32px;
  font-weight: 500;
  min-width: 80px;
}

.perfil-difficult-info {
  flex: 1;
}

.perfil-difficult-pinyin {
  font-size: 14px;
  color: var(--text-secondary);
}

.perfil-difficult-meaning {
  font-size: 14px;
  font-weight: 500;
}

.perfil-difficult-times {
  font-size: 13px;
  color: #ef4444;
  background: #fee2e2;
  padding: 4px 10px;
  border-radius: 12px;
  white-space: nowrap;
}

[data-theme="dark"] .perfil-difficult-times {
  background: rgba(239, 68, 68, 0.2);
}

.perfil-suggestion-box {
  margin-top: 16px;
  padding: 14px 18px;
  background: #fef3c7;
  border-radius: 10px;
  font-size: 14px;
  color: #92400e;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

[data-theme="dark"] .perfil-suggestion-box {
  background: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
}

.perfil-suggestion-icon {
  font-size: 18px;
}

.perfil-empty-state {
  text-align: center;
  color: var(--text-tertiary);
  padding: 24px;
  font-size: 14px;
}

/* Sessions Card */
.perfil-sessions-card {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-color);
}

.perfil-session-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.perfil-session-item {
  border-left: 3px solid var(--border-color);
  padding-left: 16px;
  position: relative;
}

.perfil-session-item::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-secondary);
}

.perfil-session-date {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.perfil-session-relative {
  font-weight: 400;
  color: var(--text-secondary);
  font-size: 12px;
}

.perfil-session-details {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.perfil-session-detail {
  display: flex;
  align-items: center;
  gap: 6px;
}

.perfil-load-more {
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  margin-top: 8px;
}

.perfil-load-more-btn {
  color: var(--accent);
  background: none;
  border: none;
  font-size: 14px;
  cursor: pointer;
  font-weight: 500;
}

.perfil-load-more-btn:hover {
  text-decoration: underline;
}

/* Resumen de Planes en Sidebar */
.perfil-planes-summary {
  text-align: center;
}

.perfil-planes-resumen {
  margin-bottom: 16px;
}

.perfil-planes-count {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.perfil-planes-total {
  font-size: 14px;
  color: var(--text-secondary);
}

.btn-ver-planes {
  width: 100%;
  padding: 12px 20px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-ver-planes:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* Sección de Planes de Estudio */
.perfil-planes-section {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.perfil-planes-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.btn-cerrar-planes {
  padding: 8px 16px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-cerrar-planes:hover {
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* Sección de Información General */
.perfil-info-general-section {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.perfil-info-general-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.btn-cerrar-info-general {
  padding: 8px 16px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-cerrar-info-general:hover {
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* Secciones genéricas (Entradas, PDFs, Listas) */
.perfil-entradas-section,
.perfil-pdfs-section,
.perfil-listas-section {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.perfil-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.btn-cerrar-section {
  padding: 8px 16px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-cerrar-section:hover {
  background: var(--bg-primary);
  color: var(--text-primary);
}

.perfil-section-content {
  /* Contenedor de contenido dinámico */
}

.perfil-entradas-lista,
.perfil-pdfs-lista,
.perfil-listas-lista {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Item genérico para listas */
.perfil-list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--bg-tertiary);
  border-radius: 10px;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.perfil-list-item-clickable:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
  transform: translateX(4px);
}

.perfil-list-item-clickable:hover .perfil-list-item-arrow {
  color: var(--accent);
}

/* Botón eliminar término en modal */
.btn-eliminar-termino:hover {
  color: #ef4444 !important;
  background: rgba(239, 68, 68, 0.1) !important;
}

.modal-termino-item:hover .btn-eliminar-termino {
  opacity: 1;
}

.modal-termino-item .btn-eliminar-termino {
  opacity: 0.3;
}

/* Botón eliminar lista completa */
#btn-eliminar-lista:hover {
  color: #ef4444 !important;
  background: rgba(239, 68, 68, 0.1) !important;
}

/* Lista del catálogo item hover */
.lista-catalogo-item:hover {
  border-color: var(--accent) !important;
}

/* Botones de filtro por categoría - misma identidad que index */
.filtro-cat-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.filtro-cat-btn svg {
  color: var(--text-secondary);
  transition: color 0.2s;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.filtro-cat-btn:hover {
  border-color: #90100f;
  background: var(--bg-tertiary);
}

.filtro-cat-btn:hover svg {
  color: #90100f;
}

.filtro-cat-btn.active {
  background: #90100f;
  color: white;
  border-color: #90100f;
}

.filtro-cat-btn.active svg {
  color: #fff;
}

.filtro-cat-btn.active:hover {
  color: #fff;
  background: #7a0e0d;
  border-color: #7a0e0d;
}

.filtro-cat-btn.active:hover svg {
  color: #fff;
}

/* Tooltip en hover para botones de categoría (siempre solo iconos) */
.filtro-cat-btn::after {
  content: attr(title);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 8px;
  padding: 6px 10px;
  background: var(--text-primary);
  color: var(--bg-primary);
  font-size: 11px;
  font-weight: 500;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 100;
}

.filtro-cat-btn:hover::after {
  opacity: 1;
}

/* Botón activo con panel abierto - efecto globo de diálogo */
#btn-toggle-agregar-terminos,
#btn-toggle-agregar-listas {
  position: relative;
}

#btn-toggle-agregar-terminos.panel-activo,
#btn-toggle-agregar-listas.panel-activo {
  box-shadow: 0 0 0 3px rgba(144, 16, 15, 0.3), 0 4px 12px rgba(144, 16, 15, 0.25);
  transform: translateY(-2px);
  background: #90100f !important;
  color: white !important;
  border-color: #90100f !important;
}

#btn-toggle-agregar-terminos.panel-activo svg,
#btn-toggle-agregar-listas.panel-activo svg {
  stroke: white;
}

/* Flecha triangular apuntando al panel */
#btn-toggle-agregar-terminos.panel-activo::after,
#btn-toggle-agregar-listas.panel-activo::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid #90100f;
}

/* Título editable de lista */
.lista-titulo-texto:hover {
  color: var(--accent);
}

/* Badges HSK */
.badge-hsk {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.badge-hsk1 { background: #dcfce7; color: #166534; }
.badge-hsk2 { background: #d1fae5; color: #065f46; }
.badge-hsk3 { background: #fef3c7; color: #92400e; }
.badge-hsk4 { background: #fed7aa; color: #9a3412; }
.badge-hsk5 { background: #fecaca; color: #991b1b; }
.badge-hsk6 { background: #e9d5ff; color: #6b21a8; }

/* Badges de dominio */
.badge-dominio {
  font-size: 10px;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: 4px;
}

.badge-dominio-dominado { background: #d1fae5; color: #065f46; }
.badge-dominio-revisando { background: #dbeafe; color: #1e40af; }
.badge-dominio-aprendiendo { background: #fef3c7; color: #92400e; }

/* Botón nueva lista */
.btn-nueva-lista {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-nueva-lista:hover {
  background: var(--accent-hover, #4f46e5);
  transform: translateY(-1px);
}

.perfil-list-item-info {
  flex: 1;
}

.perfil-list-item-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}

.perfil-list-item-meta {
  font-size: 12px;
  color: var(--text-secondary);
}

.perfil-list-item-stats {
  display: flex;
  gap: 12px;
  align-items: center;
}

.perfil-list-item-stat {
  text-align: center;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-radius: 8px;
}

.perfil-list-item-stat-value {
  font-weight: 700;
  font-size: 16px;
  color: var(--accent);
}

.perfil-list-item-stat-label {
  font-size: 11px;
  color: var(--text-secondary);
}

.perfil-tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}

.perfil-planes-filtros {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.perfil-planes-filtro-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.perfil-planes-filtro-group label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.perfil-planes-filtro-group select {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  min-width: 160px;
}

.perfil-planes-lista {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Tarjeta individual de plan */
.perfil-plan-card {
  background: var(--bg-tertiary);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--border-color);
  transition: all 0.2s;
}

.perfil-plan-card:hover {
  box-shadow: 0 4px 12px var(--shadow);
}

.perfil-plan-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.perfil-plan-card-info {
  flex: 1;
}

.perfil-plan-card-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.perfil-plan-card-meta {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.perfil-plan-card-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.perfil-plan-card-badge.activo {
  background: #dcfce7;
  color: #16a34a;
}

.perfil-plan-card-badge.completado {
  background: #dbeafe;
  color: #2563eb;
}

[data-theme="dark"] .perfil-plan-card-badge.activo {
  background: rgba(22, 163, 74, 0.2);
}

[data-theme="dark"] .perfil-plan-card-badge.completado {
  background: rgba(37, 99, 235, 0.2);
}

.perfil-plan-card-progress {
  margin-bottom: 16px;
}

.perfil-plan-card-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.perfil-plan-card-progress-pct {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}

.perfil-plan-card-progress-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.perfil-plan-card-progress-bar {
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
}

.perfil-plan-card-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, #10b981 100%);
  border-radius: 4px;
  transition: width 0.5s;
}

.perfil-plan-card-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.perfil-plan-card-stat {
  text-align: center;
  padding: 10px 6px;
  background: var(--bg-secondary);
  border-radius: 8px;
}

.perfil-plan-card-stat-value {
  font-size: 18px;
  font-weight: 700;
}

.perfil-plan-card-stat-label {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.perfil-plan-card-stat.mastered { color: #10b981; }
.perfil-plan-card-stat.easy { color: #3b82f6; }
.perfil-plan-card-stat.normal { color: #f59e0b; }
.perfil-plan-card-stat.hard { color: #ef4444; }

.perfil-plan-card-actions {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 8px;
}

.perfil-plan-card-btn {
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.perfil-plan-card-btn:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.perfil-planes-empty {
  text-align: center;
  padding: 40px;
  color: var(--text-tertiary);
}

/* Estilos adicionales para tarjetas de planes */
.perfil-plan-card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.perfil-plan-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-right: 8px;
}

.perfil-plan-icon svg {
  width: 18px;
  height: 18px;
}

.perfil-plan-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.perfil-plan-badge.nuevo {
  background: #f3f4f6;
  color: #6b7280;
}

.perfil-plan-badge.iniciado {
  background: #fef3c7;
  color: #d97706;
}

.perfil-plan-badge.progreso {
  background: #dbeafe;
  color: #2563eb;
}

.perfil-plan-badge.completado {
  background: #dcfce7;
  color: #16a34a;
}

[data-theme="dark"] .perfil-plan-badge.nuevo {
  background: rgba(107, 114, 128, 0.2);
}

[data-theme="dark"] .perfil-plan-badge.iniciado {
  background: rgba(217, 119, 6, 0.2);
}

[data-theme="dark"] .perfil-plan-badge.progreso {
  background: rgba(37, 99, 235, 0.2);
}

[data-theme="dark"] .perfil-plan-badge.completado {
  background: rgba(22, 163, 74, 0.2);
}

.perfil-plan-progress {
  margin: 16px 0;
}

.perfil-plan-progress-bar {
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.perfil-plan-progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s;
}

.perfil-plan-progress-text {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.perfil-plan-progress-pct {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.perfil-plan-progress-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.perfil-plan-card-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 16px;
}

.perfil-plan-stat {
  text-align: center;
  padding: 10px 6px;
  background: var(--bg-secondary);
  border-radius: 8px;
}

.perfil-plan-stat-value {
  font-size: 18px;
  font-weight: 700;
}

.perfil-plan-stat-value.dominados { color: #10b981; }
.perfil-plan-stat-value.en-progreso { color: #3b82f6; }
.perfil-plan-stat-value.nuevos { color: #6b7280; }
.perfil-plan-stat-value.dificiles { color: #ef4444; }

.perfil-plan-stat-label {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.perfil-plan-card-footer {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.perfil-plan-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.perfil-plan-meta-item {
  font-size: 12px;
  color: var(--text-secondary);
}

.perfil-plan-ultima-vez {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border-radius: 8px;
  margin: 12px 0;
  border-left: 3px solid var(--accent);
}

.perfil-plan-ultima-vez-label {
  font-size: 12px;
  color: var(--text-tertiary);
  font-weight: 500;
}

.perfil-plan-ultima-vez-fecha {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 600;
}

/* ============================================
   SECCIÓN DE VOCABULARIO
   ============================================ */

/* Card de resumen de vocabulario en sidebar */
.perfil-vocab-summary {
  text-align: center;
}

.perfil-vocab-resumen {
  margin: 12px 0;
}

.perfil-vocab-count {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.perfil-vocab-stats-mini {
  display: flex;
  justify-content: center;
  gap: 16px;
  font-size: 12px;
}

.perfil-vocab-stat-mini {
  padding: 4px 8px;
  border-radius: 12px;
  font-weight: 500;
}

.perfil-vocab-stat-mini.dominados {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}

.perfil-vocab-stat-mini.estudiados {
  background: rgba(99, 102, 241, 0.15);
  color: #6366f1;
}

.perfil-vocab-stat-mini.en-progreso {
  background: rgba(59, 130, 246, 0.15);
  color: #3b82f6;
}

.btn-ver-vocab {
  width: 100%;
  padding: 12px 20px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 8px;
}

.btn-ver-vocab:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Sección expandida de vocabulario */
.perfil-vocab-section {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
}

.perfil-vocab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.btn-cerrar-vocab {
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-cerrar-vocab:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Barra de estadísticas de vocabulario */
.perfil-vocab-stats-bar {
  display: flex;
  justify-content: space-around;
  background: var(--bg-tertiary);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.perfil-vocab-stat-item {
  text-align: center;
  min-width: 80px;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
}

.perfil-vocab-stat-item:hover {
  background: var(--bg-tertiary);
}

.perfil-vocab-stat-item.active {
  background: var(--bg-tertiary);
  border-color: var(--accent);
}

.perfil-vocab-stat-value {
  font-size: 24px;
  font-weight: 700;
  display: block;
  color: var(--text-primary);
}

.perfil-vocab-stat-label {
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.perfil-vocab-stat-item.estudiados .perfil-vocab-stat-value { color: #6366f1; }
.perfil-vocab-stat-item.dominados .perfil-vocab-stat-value { color: #10b981; }
.perfil-vocab-stat-item.en-progreso .perfil-vocab-stat-value { color: #3b82f6; }
.perfil-vocab-stat-item.nuevos .perfil-vocab-stat-value { color: #6b7280; }
.perfil-vocab-stat-item.dificiles .perfil-vocab-stat-value { color: #ef4444; }

.perfil-vocab-stat-item.estudiados.active { border-color: #6366f1; }
.perfil-vocab-stat-item.dominados.active { border-color: #10b981; }
.perfil-vocab-stat-item.en-progreso.active { border-color: #3b82f6; }
.perfil-vocab-stat-item.nuevos.active { border-color: #6b7280; }
.perfil-vocab-stat-item.dificiles.active { border-color: #ef4444; }

/* Filtros de vocabulario */
.perfil-vocab-filtros {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.perfil-vocab-filtro-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.perfil-vocab-filtro-group label {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.perfil-vocab-filtro-group select,
.perfil-vocab-filtro-group input {
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 13px;
  min-width: 150px;
}

.perfil-vocab-filtro-group input {
  min-width: 200px;
}

.perfil-vocab-filtro-group select:focus,
.perfil-vocab-filtro-group input:focus {
  outline: none;
  border-color: var(--accent);
}

/* Contador de resultados */
.perfil-vocab-resultados {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

/* Grid de vocabulario */
.perfil-vocab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* Tarjeta de término */
.perfil-vocab-card {
  background: var(--bg-tertiary);
  border-radius: 12px;
  padding: 16px;
  border: 1px solid var(--border-color);
  transition: all 0.2s;
  position: relative;
  cursor: pointer;
}

.perfil-vocab-card:hover {
  box-shadow: 0 4px 12px var(--shadow);
  transform: translateY(-2px);
  border-color: var(--primary-color);
}

.perfil-vocab-card.dificil {
  border-left: 3px solid #ef4444;
}

.perfil-vocab-card-main {
  text-align: center;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.perfil-vocab-hanzi {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.perfil-vocab-pinyin {
  font-size: 14px;
  color: var(--accent);
  margin: 4px 0;
}

.perfil-vocab-meaning {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Badge de estado - esquina superior izquierda */
.perfil-vocab-badge-estado {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

.perfil-vocab-badge-estado.dominado {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}

.perfil-vocab-badge-estado.aprendiendo {
  background: rgba(59, 130, 246, 0.15);
  color: #3b82f6;
}

.perfil-vocab-badge-estado.nuevo {
  background: rgba(107, 114, 128, 0.15);
  color: #6b7280;
}

/* Badge de HSK - esquina superior derecha */
.perfil-vocab-badge-hsk {
  position: absolute;
  top: 12px;
  right: 12px;
}

.perfil-vocab-card-badge {
  padding: 4px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

.perfil-vocab-card-badge.dominado {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}

.perfil-vocab-card-badge.aprendiendo {
  background: rgba(59, 130, 246, 0.15);
  color: #3b82f6;
}

.perfil-vocab-card-badge.nuevo {
  background: rgba(107, 114, 128, 0.15);
  color: #6b7280;
}

/* Badge de nivel HSK - colores aplicados inline según nivel */
.perfil-vocab-hsk-badge {
  padding: 3px 6px;
  border-radius: 8px;
  font-size: 9px;
  font-weight: 600;
  color: #ffffff;
}

/* Estadísticas del término */
.perfil-vocab-card-stats {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
}

.perfil-vocab-card-stat {
  flex: 1;
  text-align: center;
  padding: 8px 4px;
  background: var(--bg-secondary);
  border-radius: 6px;
  min-width: 0;
}

.perfil-vocab-card-stat-label {
  display: block;
  font-size: 9px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.perfil-vocab-card-stat-value {
  font-size: 14px;
  font-weight: 700;
}

/* Fechas del término */
.perfil-vocab-card-fechas {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.perfil-vocab-card-fecha {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
}

.perfil-vocab-card-fecha-label {
  color: var(--text-tertiary);
}

.perfil-vocab-card-fecha-value {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Estado vacío */
.perfil-vocab-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
}

/* ============================================
   GRÁFICAS DE VOCABULARIO
   ============================================ */

.perfil-vocab-graficas {
  background: var(--bg-tertiary);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

/* Pestañas */
.perfil-vocab-graficas-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.perfil-vocab-tab {
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.perfil-vocab-tab:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.perfil-vocab-tab.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* Contenedor de gráficas */
.perfil-vocab-graficas-content {
  position: relative;
  min-height: 300px;
}

.perfil-vocab-grafica {
  display: none;
}

.perfil-vocab-grafica.active {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

#grafica-progreso.active {
  flex-direction: row;
  justify-content: center;
  flex-wrap: wrap;
}

.perfil-vocab-grafica-container {
  width: 250px;
  height: 250px;
  position: relative;
}

.perfil-vocab-grafica-container.wide {
  width: 100%;
  height: 300px;
}

/* Leyenda personalizada para gráfica de progreso */
.perfil-vocab-grafica-legend {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 12px 20px;
  padding: 16px 20px;
  justify-content: center;
}

.vocab-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.vocab-legend-item.clickable:hover {
  background-color: var(--bg-tertiary);
}

.vocab-legend-item.clickable:active {
  background-color: var(--bg-primary);
}

.vocab-legend-item.hidden {
  opacity: 0.4;
  text-decoration: line-through;
}

.vocab-legend-color {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  flex-shrink: 0;
}

.vocab-legend-label {
  font-size: 14px;
  color: var(--text-primary);
  flex: 1;
}

.vocab-legend-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Estado vacío para gráficas */
.grafica-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 200px;
  color: var(--text-tertiary);
  font-size: 14px;
  text-align: center;
  width: 100%;
}

/* ============================================
   SECCIÓN DE ACTIVIDAD CON PESTAÑAS
   ============================================ */

.perfil-activity-section {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
  position: relative;
}

.perfil-activity-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.perfil-activity-tabs {
  display: flex;
  gap: 8px;
}

.perfil-activity-tab {
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.perfil-activity-tab:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.perfil-activity-tab.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.perfil-activity-view {
  display: none;
}

.perfil-activity-view.active {
  display: block;
}

/* ============================================
   HEATMAP DE ACTIVIDAD
   ============================================ */

.perfil-heatmap-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

/* Leyenda de intensidad */
.perfil-heatmap-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.perfil-heatmap-legend-scale {
  display: flex;
  gap: 3px;
}

.perfil-heatmap-legend-label {
  font-size: 11px;
  color: var(--text-tertiary);
}

/* Estadísticas del heatmap */
.perfil-heatmap-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.perfil-heatmap-stat {
  display: flex;
  flex-direction: column;
}

.perfil-heatmap-stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}

.perfil-heatmap-stat-label {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* Leyenda de tipos de actividad */
.perfil-heatmap-type-legend {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

.perfil-heatmap-type {
  display: flex;
  align-items: center;
  gap: 6px;
}

.type-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.type-dot.revisiones {
  background: #10b981;
}

.type-dot.pdfs {
  background: #3b82f6;
}

.type-dot.mixto {
  background: linear-gradient(135deg, #10b981 50%, #3b82f6 50%);
}

/* Contenedor del heatmap */
.perfil-heatmap-container {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
}

/* Etiquetas de días */
.perfil-heatmap-days {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 10px;
  color: var(--text-tertiary);
  padding-top: 2px;
}

.perfil-heatmap-days span {
  height: 15px;
  display: flex;
  align-items: center;
}

/* Wrapper para centrar meses + grid juntos */
#activity-view-heatmap > .perfil-heatmap-months,
#activity-view-heatmap > .perfil-heatmap-container {
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

/* Etiquetas de meses */
.perfil-heatmap-months {
  display: flex;
  position: relative;
  height: 20px;
  margin-bottom: 4px;
  font-size: 11px;
  color: var(--text-tertiary);
}

.perfil-heatmap-months-spacer {
  width: 35px;
  flex-shrink: 0;
}

.perfil-heatmap-months span {
  position: absolute;
  white-space: nowrap;
}

/* Grid del heatmap */
.perfil-heatmap-grid {
  display: flex;
  gap: 3px;
}

.perfil-heatmap-week {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

/* Celdas del heatmap */
.perfil-heatmap-cell {
  width: 15px;
  height: 15px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.1s;
}

.perfil-heatmap-cell:hover {
  transform: scale(1.3);
  outline: 2px solid var(--text-primary);
  outline-offset: 1px;
}

.perfil-heatmap-cell.empty {
  visibility: hidden;
}

/* Niveles de intensidad - Revisiones (verde) */
.perfil-heatmap-cell.level-0 {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
}

.perfil-heatmap-cell.level-1.revisiones { background: #86efac; }
.perfil-heatmap-cell.level-2.revisiones { background: #4ade80; }
.perfil-heatmap-cell.level-3.revisiones { background: #22c55e; }
.perfil-heatmap-cell.level-4.revisiones { background: #16a34a; }

/* Niveles de intensidad - PDFs (azul) */
.perfil-heatmap-cell.level-1.pdfs { background: #93c5fd; }
.perfil-heatmap-cell.level-2.pdfs { background: #60a5fa; }
.perfil-heatmap-cell.level-3.pdfs { background: #3b82f6; }
.perfil-heatmap-cell.level-4.pdfs { background: #2563eb; }

/* Niveles de intensidad - Mixto (gradiente) */
.perfil-heatmap-cell.level-1.mixto { background: linear-gradient(135deg, #86efac 50%, #93c5fd 50%); }
.perfil-heatmap-cell.level-2.mixto { background: linear-gradient(135deg, #4ade80 50%, #60a5fa 50%); }
.perfil-heatmap-cell.level-3.mixto { background: linear-gradient(135deg, #22c55e 50%, #3b82f6 50%); }
.perfil-heatmap-cell.level-4.mixto { background: linear-gradient(135deg, #16a34a 50%, #2563eb 50%); }

/* Leyenda - celdas de muestra */
.perfil-heatmap-legend .perfil-heatmap-cell {
  cursor: default;
}

.perfil-heatmap-legend .perfil-heatmap-cell:hover {
  transform: none;
  outline: none;
}

.perfil-heatmap-legend .level-0 { background: var(--bg-tertiary); border: 1px solid var(--border-color); }
.perfil-heatmap-legend .level-1 { background: #86efac; }
.perfil-heatmap-legend .level-2 { background: #4ade80; }
.perfil-heatmap-legend .level-3 { background: #22c55e; }
.perfil-heatmap-legend .level-4 { background: #16a34a; }

/* Tooltip del heatmap */
.perfil-heatmap-tooltip {
  display: none;
  position: absolute;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--text-primary);
  box-shadow: 0 4px 12px var(--shadow);
  z-index: 100;
  pointer-events: none;
  transform: translateX(-50%);
  white-space: nowrap;
  line-height: 1.5;
}

.perfil-heatmap-tooltip::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--border-color);
}

/* Tema oscuro - ajustes para heatmap */
[data-theme="dark"] .perfil-heatmap-cell.level-0 {
  background: var(--bg-tertiary);
}

/* Responsive */
@media (max-width: 900px) {
  /* Grid unificado: 6 columnas en pantallas pequeñas */
  .perfil-unified-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  /* Meta items pequeños ocupan 3 columnas */
  .perfil-unified-grid .perfil-meta-small {
    grid-column: span 3;
  }

  /* Rachas ocupa toda la fila */
  .perfil-unified-grid .perfil-meta-rachas {
    grid-column: span 6;
  }

  /* Botones ocupan 2 columnas cada uno (3 por fila) */
  .perfil-unified-grid .perfil-action-btn {
    grid-column: span 2;
  }

  .perfil-progress-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .perfil-plan-card-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .perfil-planes-filtros {
    flex-direction: column;
  }

  .perfil-vocab-filtros {
    flex-direction: column;
  }

  .perfil-vocab-filtro-group input {
    min-width: 100%;
  }

  .perfil-vocab-stats-bar {
    justify-content: center;
  }

  .perfil-vocab-grid {
    grid-template-columns: 1fr;
  }

  .perfil-vocab-graficas-tabs {
    justify-content: center;
  }

  .perfil-vocab-tab {
    padding: 8px 12px;
    font-size: 12px;
  }

  #grafica-progreso.active {
    flex-direction: column;
  }

  .perfil-vocab-grafica-container {
    width: 200px;
    height: 200px;
  }

  .perfil-vocab-grafica-container.wide {
    height: 250px;
  }

  .perfil-activity-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .perfil-activity-tabs {
    width: 100%;
    justify-content: center;
  }

  .perfil-activity-tab {
    padding: 6px 12px;
    font-size: 12px;
  }

  .perfil-heatmap-header-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .perfil-heatmap-stats {
    gap: 20px;
  }

  .perfil-heatmap-stat-value {
    font-size: 20px;
  }

  .perfil-heatmap-cell {
    width: 10px;
    height: 10px;
  }

  .perfil-heatmap-days span {
    height: 10px;
    font-size: 9px;
  }
}