/* Pratika Idiomas - Design System & Custom Stylesheet */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Sora:wght@400;500;600;700;800&display=swap');

:root {
  /* Default Colors */
  --primary-color: #6C5CE7;
  --primary-hover: #5b4cc4;
  --secondary-color: #8B7CF6;
  --secondary-hover: #7665e3;
  --success-color: #22C55E;
  --error-color: #EF4444;
  --warning-color: #F59E0B;
  
  --bg-color: #F8F9FB;
  --surface-color: #FFFFFF;
  --text-primary: #111827;
  --text-secondary: #6B7280;
  
  --border-color: #E5E7EB;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-premium: 0 20px 25px -5px rgba(108, 92, 231, 0.05), 0 10px 10px -5px rgba(108, 92, 231, 0.02);
  
  --font-main: 'Inter', sans-serif;
  --font-title: 'Sora', sans-serif;
  --font-display: 'Plus Jakarta Sans', sans-serif;
  
  --sidebar-width: 260px;
  --header-height: 70px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Layout Shells */
#app-root {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.portal-container {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background-color: var(--bg-color);
  padding: 2rem;
  margin-left: var(--sidebar-width);
}

/* Auth Screens */
.auth-container {
  display: flex;
  min-height: 100vh;
  background-color: var(--bg-color);
}

.auth-sidebar {
  flex: 1.1;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.auth-sidebar::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  filter: blur(40px);
}

.auth-sidebar::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  filter: blur(50px);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
}

.auth-brand svg {
  stroke: white;
}

.auth-hero-content {
  max-width: 480px;
  z-index: 2;
  margin-top: 2rem;
}

.auth-hero-content h1 {
  font-family: var(--font-title);
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.auth-hero-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.auth-features-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.auth-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
}

.auth-feature-item svg {
  stroke: white;
}

.auth-illustration-container {
  margin-top: 3rem;
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  z-index: 2;
}

.auth-illustration-img {
  width: 85%;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.auth-footer-text {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  z-index: 2;
}

.auth-form-wrapper {
  flex: 0.9;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  background-color: var(--bg-color);
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--surface-color);
  padding: 2.5rem;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  transition: transform var(--transition-normal);
}

.auth-card-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.auth-card h2 {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.auth-card p.subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 2rem;
}

/* Sidebar Styling */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--surface-color);
  border-right: 1px solid var(--border-color);
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.25rem;
  z-index: 100;
  transition: transform var(--transition-normal);
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.5rem 1.5rem 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.sidebar-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  overflow-y: auto;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 0.85rem;
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  font-size: 0.925rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sidebar-item:hover {
  background-color: var(--bg-color);
  color: var(--text-primary);
}

.sidebar-item.active {
  background-color: rgba(108, 92, 231, 0.08);
  color: var(--primary-color);
  font-weight: 600;
}

.sidebar-item svg {
  width: 18px;
  height: 18px;
}

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
}

.sidebar-user img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
}

.sidebar-user-info {
  flex: 1;
  min-width: 0;
}

.sidebar-user-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.85rem;
  border-radius: var(--border-radius-sm);
  color: var(--error-color);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.logout-btn:hover {
  background-color: rgba(239, 68, 68, 0.05);
}

/* Header Styling */
.header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background-color: var(--bg-color);
  border-bottom: 1px solid transparent;
  margin-left: var(--sidebar-width);
}

.header-title-container h2 {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.header-title-container p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-action-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.header-action-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--text-primary);
}

.header-user-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  padding: 0.25rem 0.75rem 0.25rem 0.25rem;
  border-radius: 30px;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.header-user-profile:hover {
  box-shadow: var(--shadow-sm);
}

.header-user-profile img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.header-user-profile span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Componentes Premium: KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.kpi-card {
  background-color: var(--surface-color);
  padding: 1.5rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.kpi-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kpi-card-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-card-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--border-radius-sm);
  background-color: rgba(108, 92, 231, 0.08);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.kpi-card-value {
  font-family: var(--font-title);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.kpi-card-trend {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.775rem;
  font-weight: 600;
}

.kpi-card-trend.up {
  color: var(--success-color);
}

.kpi-card-trend.down {
  color: var(--error-color);
}

/* Dashboard Section Layouts */
.dash-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.dash-row.full {
  grid-template-columns: 1fr;
}

.panel-card {
  background-color: var(--surface-color);
  padding: 1.75rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.panel-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.panel-card-title {
  font-family: var(--font-title);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Custom Table Premium styling */
.table-container {
  overflow-x: auto;
  width: 100%;
}

.premium-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.premium-table th {
  padding: 1rem 1.25rem;
  font-size: 0.775rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

.premium-table td {
  padding: 1.15rem 1.25rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.premium-table tbody tr {
  transition: background-color var(--transition-fast);
}

.premium-table tbody tr:hover {
  background-color: rgba(248, 249, 251, 0.6);
}

.avatar-cell {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.avatar-cell img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.avatar-cell-name {
  font-weight: 600;
  color: var(--text-primary);
}

.avatar-cell-email {
  font-size: 0.775rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 30px;
}

.badge.active {
  background-color: rgba(34, 197, 94, 0.08);
  color: var(--success-color);
}

.badge.inactive {
  background-color: rgba(107, 114, 128, 0.08);
  color: var(--text-secondary);
}

.badge.pending {
  background-color: rgba(245, 158, 11, 0.08);
  color: var(--warning-color);
}

.badge.danger {
  background-color: rgba(239, 68, 68, 0.08);
  color: var(--error-color);
}

/* Progress Bars */
.progress-bar-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.progress-track {
  flex: 1;
  height: 6px;
  background-color: #E5E7EB;
  border-radius: 10px;
  overflow: hidden;
  min-width: 60px;
}

.progress-fill {
  height: 100%;
  background-color: var(--primary-color);
  border-radius: 10px;
  transition: width 0.5s ease-out;
}

.progress-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.15);
}

.btn-secondary {
  background-color: rgba(108, 92, 231, 0.08);
  color: var(--primary-color);
}

.btn-secondary:hover {
  background-color: rgba(108, 92, 231, 0.12);
}

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

.btn-outline:hover {
  background-color: var(--bg-color);
  border-color: var(--text-secondary);
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.08);
  color: var(--error-color);
}

.btn-danger:hover {
  background-color: rgba(239, 68, 68, 0.12);
}

.btn-google {
  background-color: white;
  border-color: var(--border-color);
  color: var(--text-primary);
  width: 100%;
}

.btn-google:hover {
  background-color: #FAFAFA;
  box-shadow: var(--shadow-sm);
}

.btn-google img {
  width: 18px;
  height: 18px;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
}

.btn-full {
  width: 100%;
}

/* Forms controls */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-main);
  font-size: 0.9rem;
  color: var(--text-primary);
  background-color: var(--surface-color);
  outline: none;
  transition: all var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}

.checkbox-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.checkbox-label input {
  accent-color: var(--primary-color);
}

.form-link {
  font-size: 0.85rem;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.form-link:hover {
  text-decoration: underline;
}

.divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.775rem;
  margin: 1.5rem 0;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-color);
}

.divider:not(:empty)::before {
  margin-right: .5em;
}

.divider:not(:empty)::after {
  margin-left: .5em;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tab-btn {
  padding: 0.75rem 0.25rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

/* Subtitle actions list */
.actions-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.search-input-wrapper {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.search-input-wrapper input {
  padding-left: 2.25rem;
}

.search-input-wrapper svg {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

/* Grid of Cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card-item {
  background-color: var(--surface-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-item-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
}

.card-item-title {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.card-item-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.card-item-details {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.card-item-detail-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-item-detail-row svg {
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
}

.card-item-footer {
  margin-top: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
}

/* Calendar Week Widget */
.calendar-widget {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.calendar-day-header {
  text-align: center;
  font-size: 0.775rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  text-transform: uppercase;
}

.calendar-day-cell {
  background-color: var(--bg-color);
  border-radius: var(--border-radius-sm);
  padding: 0.5rem;
  min-height: 100px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.calendar-day-number {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.calendar-day-cell.today {
  border-color: var(--primary-color);
  background-color: rgba(108, 92, 231, 0.03);
}

.calendar-day-cell.today .calendar-day-number {
  color: var(--primary-color);
}

.calendar-event {
  font-size: 0.7rem;
  padding: 0.25rem 0.4rem;
  border-radius: 4px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.calendar-event.live {
  background-color: rgba(108, 92, 231, 0.1);
  color: var(--primary-color);
  border-left: 2.5px solid var(--primary-color);
}

.calendar-event.activity {
  background-color: rgba(34, 197, 94, 0.1);
  color: var(--success-color);
  border-left: 2.5px solid var(--success-color);
}

.calendar-event.holiday {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--error-color);
  border-left: 2.5px solid var(--error-color);
}

/* Material Módulos UI */
.module-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.module-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.module-header {
  padding: 1.25rem;
  background-color: #FDFDFD;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
}

.module-header-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
}

.module-header-meta {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.module-lessons-list {
  padding: 0.5rem 1rem;
  display: flex;
  flex-direction: column;
}

.module-lesson-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0.5rem;
  border-bottom: 1px solid #F3F4F6;
}

.module-lesson-item:last-child {
  border-bottom: none;
}

.module-lesson-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.module-lesson-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: #F3F4F6;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.module-lesson-icon.video {
  background-color: rgba(108, 92, 231, 0.08);
  color: var(--primary-color);
}

.module-lesson-icon.pdf {
  background-color: rgba(239, 68, 68, 0.08);
  color: var(--error-color);
}

.module-lesson-icon.audio {
  background-color: rgba(34, 197, 94, 0.08);
  color: var(--success-color);
}

.module-lesson-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.module-lesson-duration {
  font-size: 0.775rem;
  color: var(--text-secondary);
}

/* Chat & Communication Layout */
.chat-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  background-color: var(--surface-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  min-height: 500px;
  overflow: hidden;
}

.chat-sidebar {
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.chat-sidebar-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
}

.chat-user-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.chat-user-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  border-bottom: 1px solid #FAFAFA;
  transition: background-color var(--transition-fast);
}

.chat-user-item:hover {
  background-color: var(--bg-color);
}

.chat-user-item.active {
  background-color: rgba(108, 92, 231, 0.05);
  border-left: 3px solid var(--primary-color);
}

.chat-user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  position: relative;
}

.chat-user-avatar.online::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  background-color: var(--success-color);
  border: 2px solid white;
  border-radius: 50%;
}

.chat-user-details {
  flex: 1;
  min-width: 0;
}

.chat-user-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-user-preview {
  font-size: 0.775rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-content {
  display: flex;
  flex-direction: column;
  background-color: #FAFBFC;
}

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

.chat-active-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.chat-messages {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.chat-bubble {
  max-width: 60%;
  padding: 0.85rem 1rem;
  border-radius: var(--border-radius-md);
  font-size: 0.9rem;
  line-height: 1.4;
  position: relative;
}

.chat-bubble.received {
  background-color: var(--surface-color);
  color: var(--text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.chat-bubble.sent {
  background-color: var(--primary-color);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}

.chat-bubble-time {
  font-size: 0.7rem;
  margin-top: 0.25rem;
  text-align: right;
  opacity: 0.7;
}

.chat-input-area {
  padding: 1rem 1.5rem;
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Profile page and Settings forms */
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 2.5fr;
  gap: 2rem;
}

.settings-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.settings-nav-item {
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.settings-nav-item:hover {
  background-color: rgba(0, 0, 0, 0.03);
  color: var(--text-primary);
}

.settings-nav-item.active {
  background-color: rgba(108, 92, 231, 0.08);
  color: var(--primary-color);
  font-weight: 600;
}

.profile-avatar-upload {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.profile-avatar-upload img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid white;
  box-shadow: var(--shadow-md);
}

.settings-form-box {
  background-color: var(--surface-color);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

/* Color theme Picker */
.theme-picker-container {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.color-option {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  border: 3px solid white;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.color-option:hover {
  transform: scale(1.1);
}

.color-option.selected::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: white;
  box-shadow: var(--shadow-sm);
}

/* LiveKit Call Screen UI - Immersive meeting space (Zoom + Meet inspired) */
.livekit-room {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #0F172A;
  color: white;
  z-index: 1000;
  display: grid;
  grid-template-columns: 1fr 340px;
  font-family: var(--font-main);
}

.livekit-room.chat-closed {
  grid-template-columns: 1fr;
}

.livekit-main-area {
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
  background-color: #0B0F19;
}

.livekit-header {
  height: 60px;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
}

.livekit-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.livekit-title h3 {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
}

.livekit-badge-live {
  background-color: var(--error-color);
  color: white;
  padding: 0.15rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: 4px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.livekit-time {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
}

.livekit-video-grid {
  flex: 1;
  padding: 80px 1.5rem 100px 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.livekit-video-wrapper {
  width: 100%;
  max-width: 850px;
  height: 100%;
  max-height: 480px;
  background-color: #1E293B;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
}

.livekit-main-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.livekit-screen-share {
  background-color: #1E293B;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  color: rgba(255, 255, 255, 0.8);
}

.livekit-participant-overlay {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(5px);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.livekit-participant-overlay svg {
  width: 14px;
  height: 14px;
  color: var(--success-color);
}

.livekit-thumbnail-strip {
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.75rem;
  z-index: 5;
}

.livekit-thumbnail {
  width: 120px;
  height: 75px;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  background-color: #1E293B;
  border: 2px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  position: relative;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.livekit-thumbnail:hover {
  border-color: rgba(255, 255, 255, 0.6);
}

.livekit-thumbnail.speaking {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.5);
}

.livekit-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.livekit-thumbnail span {
  position: absolute;
  bottom: 0.25rem;
  left: 0.25rem;
  font-size: 0.65rem;
  background-color: rgba(0, 0, 0, 0.6);
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  max-width: 90%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.livekit-controls {
  height: 80px;
  padding: 0 2rem;
  background-color: rgba(15, 23, 42, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
}

.livekit-control-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.livekit-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.08);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.livekit-btn:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

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

.livekit-btn.muted {
  background-color: var(--error-color);
}

.livekit-btn.muted:hover {
  background-color: #d63737;
}

.livekit-btn-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.6);
}

.livekit-btn-end {
  background-color: var(--error-color);
  padding: 0.65rem 1.5rem;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.85rem;
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background-color var(--transition-fast);
}

.livekit-btn-end:hover {
  background-color: #d63737;
}

/* LiveKit Panel (Sidebar dereita) */
.livekit-panel {
  background-color: #0F172A;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.livekit-panel-tabs {
  display: flex;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0 1rem;
  gap: 1rem;
  background-color: rgba(15, 23, 42, 0.5);
}

.livekit-panel-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: rgba(255, 255, 255, 0.6);
  padding: 1rem 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.livekit-panel-tab:hover {
  color: white;
}

.livekit-panel-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.livekit-panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.livekit-chat-messages {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow-y: auto;
}

.livekit-chat-msg {
  background-color: rgba(255, 255, 255, 0.03);
  padding: 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
}

.livekit-chat-sender {
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--secondary-color);
}

.livekit-chat-input-wrapper {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1rem;
}

.livekit-chat-input-wrapper input {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: white;
  padding: 0.65rem 0.85rem;
  border-radius: 6px;
  font-size: 0.8rem;
  outline: none;
  flex: 1;
}

.livekit-chat-input-wrapper input:focus {
  border-color: var(--primary-color);
}

.livekit-panel-participant {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

.livekit-panel-participant-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.livekit-panel-participant-info img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

.livekit-panel-participant-controls {
  display: flex;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.4);
}

.livekit-panel-participant-controls svg {
  width: 14px;
  height: 14px;
}

.livekit-panel-material-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: rgba(255, 255, 255, 0.03);
  padding: 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
}

.livekit-panel-material-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.livekit-panel-material-info svg {
  color: var(--primary-color);
}

.livekit-panel-material-item a {
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.livekit-panel-material-item a:hover {
  color: white;
}

/* Graph / Simulated Charts */
.chart-simulated {
  height: 180px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 1rem 0;
  position: relative;
}

.chart-bar-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  height: 100%;
  justify-content: flex-end;
  gap: 0.5rem;
}

.chart-bar-fill {
  width: 65%;
  max-width: 25px;
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  border-radius: 6px 6px 0 0;
  transition: height 1s ease;
  position: relative;
}

.chart-bar-fill:hover::after {
  content: attr(data-value);
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--text-primary);
  color: white;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 600;
  white-space: nowrap;
}

.chart-bar-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Circle Progress Widget */
.circle-progress-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto;
}

.circle-progress-svg {
  transform: rotate(-90deg);
  width: 120px;
  height: 120px;
}

.circle-progress-bg {
  fill: none;
  stroke: #E5E7EB;
  stroke-width: 8px;
}

.circle-progress-bar {
  fill: none;
  stroke: var(--primary-color);
  stroke-width: 8px;
  stroke-linecap: round;
  stroke-dasharray: 283;
  stroke-dashoffset: 283;
  transition: stroke-dashoffset 0.8s ease-out;
}

.circle-progress-value {
  position: absolute;
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Responsive sidebar */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content, .header {
    margin-left: 0;
  }
  .dash-row {
    grid-template-columns: 1fr;
  }
}