/* ==========================================
   HOJA DE ESTILOS PREMIUM - NL APRENDE
   ========================================== */

/* Variables del Sistema de Diseño (Por defecto: Tema Oscuro) */
:root {
  --bg-app: #0b0f19;
  --bg-sidebar: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --border-color: rgba(255, 255, 255, 0.06);
  --border-color-hover: rgba(255, 255, 255, 0.15);
  
  --text-main: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --primary: #3b82f6;
  --primary-gradient: linear-gradient(135deg, #3b82f6, #06b6d4);
  --primary-glow: rgba(59, 130, 246, 0.15);
  
  --espanol: #0ea5e9;
  --espanol-gradient: linear-gradient(135deg, #38bdf8, #0ea5e9);
  --espanol-glow: rgba(14, 165, 233, 0.15);
  
  --matematicas: #a855f7;
  --matematicas-gradient: linear-gradient(135deg, #c084fc, #a855f7);
  --matematicas-glow: rgba(168, 85, 247, 0.15);
  
  --ciencias: #10b981;
  --ciencias-gradient: linear-gradient(135deg, #34d399, #10b981);
  --ciencias-glow: rgba(16, 185, 129, 0.15);
  
  --general-gradient: linear-gradient(135deg, #f59e0b, #ef4444);
  --general-glow: rgba(245, 158, 11, 0.15);
  
  /* Estados de Rendimiento Semáforo */
  --excellent: #10b981;
  --good: #3b82f6;
  --regular: #f59e0b;
  --danger: #ef4444;
  
  --excellent-bg: rgba(16, 185, 129, 0.1);
  --good-bg: rgba(59, 130, 246, 0.1);
  --regular-bg: rgba(245, 158, 11, 0.1);
  --danger-bg: rgba(239, 68, 68, 0.1);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.1);
  
  --font-family: 'Outfit', sans-serif;
  --sidebar-width: 260px;
  --header-height: 80px;
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
}

/* Variables para Tema Claro */
[data-theme="light"] {
  --bg-app: #f3f4f6;
  --bg-sidebar: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(249, 250, 251, 0.95);
  --border-color: rgba(0, 0, 0, 0.07);
  --border-color-hover: rgba(0, 0, 0, 0.15);
  
  --text-main: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  
  --primary: #2563eb;
  --primary-gradient: linear-gradient(135deg, #2563eb, #0284c7);
  --primary-glow: rgba(37, 99, 235, 0.1);
  
  --espanol: #0284c7;
  --espanol-gradient: linear-gradient(135deg, #0ea5e9, #0284c7);
  
  --matematicas: #9333ea;
  --matematicas-gradient: linear-gradient(135deg, #a855f7, #9333ea);
  
  --ciencias: #059669;
  --ciencias-gradient: linear-gradient(135deg, #10b981, #059669);
  
  --excellent-bg: rgba(16, 185, 129, 0.15);
  --good-bg: rgba(59, 130, 246, 0.15);
  --regular-bg: rgba(245, 158, 11, 0.15);
  --danger-bg: rgba(239, 68, 68, 0.15);
  
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.08);
}

/* Reset y Estilos Globales */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
}

/* Layout Principal de la App */
.app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* ==========================================
   SIDEBAR (MENÚ LATERAL)
   ========================================== */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  padding: 24px 16px;
  transition: background-color 0.3s, border-right 0.3s;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  margin-bottom: 32px;
}

.brand-icon {
  background: var(--primary-gradient);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.brand-icon i {
  width: 24px;
  height: 24px;
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-main), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text span {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  display: block;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.nav-item {
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.nav-item i {
  width: 20px;
  height: 20px;
  stroke-width: 2px;
}

.nav-item:hover {
  color: var(--text-main);
  background-color: var(--border-color);
}

.nav-item.active {
  color: #ffffff;
  background: var(--primary-gradient);
  box-shadow: 0 4px 15px var(--primary-glow);
}

.nav-item.active i {
  stroke-width: 2.5px;
}

.sidebar-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Toggle del Tema */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: var(--border-color);
  padding: 8px;
  border-radius: 50px;
}

.theme-toggle i {
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
}

.theme-toggle i#sun-icon {
  color: #f59e0b;
}

.theme-toggle i#moon-icon {
  color: #a855f7;
}

.switch {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 20px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #cbd5e1;
  transition: .3s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
}

input:checked + .slider {
  background: var(--primary-gradient);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--primary);
}

input:checked + .slider:before {
  transform: translateX(18px);
}

.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}

.footer-info {
  text-align: center;
}

.footer-info p {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ==========================================
   MAIN CONTENT AREA (ZONA PRINCIPAL)
   ========================================== */
.main-content {
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  min-height: 100vh;
  padding: 0 32px 48px 32px;
  display: flex;
  flex-direction: column;
}

/* Encabezado */
.app-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 28px;
  padding: 16px 0;
}

.header-title h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header-title p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

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

.data-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-indicator.online {
  background-color: var(--excellent);
  box-shadow: 0 0 8px var(--excellent);
}

.status-indicator.offline {
  background-color: var(--danger);
  box-shadow: 0 0 8px var(--danger);
}

/* Contenedor de Paneles de Pestañas */
.tab-container {
  flex: 1;
}

.tab-panel {
  display: none;
  animation: fadeIn 0.4s ease-out forwards;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   SISTEMA DE GRILLAS Y CONTENEDORES
   ========================================== */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.grid-2col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 24px;
  margin-bottom: 28px;
}

.grid-1col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.grid-3-1 {
  display: grid;
  grid-template-columns: 2.2fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.grid-1-2 {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 24px;
  margin-bottom: 28px;
}

/* Tarjetas de Métricas */
.metric-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--border-color-hover);
}

.metric-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.metric-icon i {
  width: 26px;
  height: 26px;
}

.metric-info h3 {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.metric-value-wrapper {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.metric-value {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.metric-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Colores específicos de Tarjetas */
.card-total .metric-icon {
  background: var(--general-gradient);
  color: #fff;
  box-shadow: 0 4px 12px var(--general-glow);
}
.card-total::before {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 60px; height: 60px;
  background: var(--general-gradient);
  filter: blur(40px);
  opacity: 0.15;
}

.card-espanol .metric-icon {
  background: var(--espanol-gradient);
  color: #fff;
  box-shadow: 0 4px 12px var(--espanol-glow);
}
.card-espanol::before {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 60px; height: 60px;
  background: var(--espanol-gradient);
  filter: blur(40px);
  opacity: 0.15;
}

.card-matematicas .metric-icon {
  background: var(--matematicas-gradient);
  color: #fff;
  box-shadow: 0 4px 12px var(--matematicas-glow);
}
.card-matematicas::before {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 60px; height: 60px;
  background: var(--matematicas-gradient);
  filter: blur(40px);
  opacity: 0.15;
}

.card-ciencias .metric-icon {
  background: var(--ciencias-gradient);
  color: #fff;
  box-shadow: 0 4px 12px var(--ciencias-glow);
}
.card-ciencias::before {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 60px; height: 60px;
  background: var(--ciencias-gradient);
  filter: blur(40px);
  opacity: 0.15;
}

/* Tarjetas de Contenedores de Gráficos / Tablas */
.chart-container-card, .table-container-card, .upload-zone-card, .instructions-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color 0.3s;
}

.chart-container-card:hover, .table-container-card:hover {
  border-color: rgba(255, 255, 255, 0.1);
}

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

.card-header h4 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

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

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

.chart-wrapper {
  position: relative;
  width: 100%;
  height: 300px;
}

.tall-chart {
  height: 420px;
}

.small-chart {
  height: 200px;
  margin: 10px auto 0 auto;
}

/* Barra de Filtros */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  padding: 16px 24px;
  border-radius: var(--border-radius-md);
  margin-bottom: 24px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-sm);
}

.filter-bar.border-bottom {
  border-bottom: 2px solid var(--primary);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-group label i {
  width: 14px;
  height: 14px;
}

.custom-select {
  background-color: var(--bg-app);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 16px;
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  min-width: 220px;
  transition: all 0.3s;
}

.custom-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-glow);
}

.student-quick-info {
  margin-left: auto;
  text-align: right;
}

.student-quick-info h4 {
  font-size: 1.1rem;
  font-weight: 600;
}

.student-quick-info p {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* ==========================================
   DISEÑO DE TABLAS
   ========================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.max-height-table {
  max-height: 480px;
  overflow-y: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  padding: 14px 16px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.15);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  transition: background-color 0.2s;
}

.data-table tbody tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Tabla seleccionable */
.selectable-rows tbody tr {
  cursor: pointer;
}

.selectable-rows tbody tr:hover td {
  background-color: var(--primary-glow);
  color: #ffffff;
}

.text-compact th, .text-compact td {
  padding: 8px 12px;
  font-size: 0.8rem;
}

.max-height-reactives-table {
  max-height: 380px;
  overflow-y: auto;
}

/* ==========================================
   ALUMNAS Y ALUMNOS (SECCIÓN ALUMNO)
   ========================================== */

/* Tarjeta Perfil */
.student-profile-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 32px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.student-profile-card::before {
  content: "";
  position: absolute;
  top: -50px; left: -50px;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: var(--primary-gradient);
  filter: blur(60px);
  opacity: 0.15;
}

.student-avatar-badge {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--border-color);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}

.student-avatar-badge i {
  width: 36px;
  height: 36px;
}

.student-profile-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
  line-height: 1.3;
}

.stud-card-sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.stud-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  width: 100%;
  margin-bottom: 28px;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
}

.stud-meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stud-meta-item .label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.stud-meta-item .value {
  font-size: 0.95rem;
  font-weight: 600;
}

.badge-exam {
  background-color: var(--border-color);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}

/* Indicador de Desempeño */
.performance-gauge-wrapper {
  width: 100%;
}

.gauge-label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.gauge-value {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  background: var(--general-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gauge-bar-outer {
  width: 100%;
  height: 8px;
  background-color: var(--border-color);
  border-radius: 10px;
  margin-bottom: 16px;
  overflow: hidden;
}

.gauge-bar-inner {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: 10px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.performance-status-pill {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Badges de Desempeño en Tabla */
.perf-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.perf-badge.excelente {
  color: var(--excellent);
  background-color: var(--excellent-bg);
}
.perf-badge.bueno {
  color: var(--good);
  background-color: var(--good-bg);
}
.perf-badge.regular {
  color: var(--regular);
  background-color: var(--regular-bg);
}
.perf-badge.alerta {
  color: var(--danger);
  background-color: var(--danger-bg);
}

/* ==========================================
   MATRIZ DIAGNÓSTICA DE REACTIVOS
   ========================================== */
.reactives-diagnostics-card {
  margin-top: 28px;
}

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

.legend-item {
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.legend-dot.correct {
  background-color: var(--excellent);
}

.legend-dot.incorrect {
  background-color: var(--danger);
}

.reactives-sections {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.reactive-section-block {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 20px;
}

.reactive-section-block h5 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.score-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  background-color: var(--border-color);
}

.espanol h5 { color: var(--espanol); }
.matematicas h5 { color: var(--matematicas); }
.ciencias h5 { color: var(--ciencias); }

.reactives-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(28px, 1fr));
  gap: 6px;
}

.reactive-node {
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: help;
  transition: all 0.2s;
  user-select: none;
}

.reactive-node.correct {
  background-color: var(--excellent-bg);
  color: var(--excellent);
  border: 1.5px solid rgba(16, 185, 129, 0.4);
}

.reactive-node.correct:hover {
  background-color: var(--excellent);
  color: #fff;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
  transform: scale(1.15);
}

.reactive-node.incorrect {
  background-color: var(--danger-bg);
  color: var(--danger);
  border: 1.5px solid rgba(239, 68, 68, 0.4);
}

.reactive-node.incorrect:hover {
  background-color: var(--danger);
  color: #fff;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
  transform: scale(1.15);
}

/* ==========================================
   BANNER DE ESCUELA
   ========================================== */
.school-summary-banner {
  background: linear-gradient(135deg, var(--bg-sidebar), rgba(17, 24, 39, 0.5));
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 30px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.school-summary-banner::after {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 150px; height: 100%;
  background: var(--primary-gradient);
  opacity: 0.03;
  transform: skewX(-20deg) translateX(40px);
}

.school-banner-info h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.school-banner-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.school-banner-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}

.banner-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.banner-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--primary);
}

.banner-stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 4px;
  font-weight: 500;
}

.banner-stat-divider {
  width: 1px;
  height: 40px;
  background-color: var(--border-color);
}

/* ==========================================
   SECCIÓN DE CARGA Y EXCEL
   ========================================== */
.drag-drop-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 60px 40px;
  text-align: center;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  margin-bottom: 24px;
}

.drag-drop-area:hover, .drag-drop-area.dragover {
  border-color: var(--primary);
  background-color: var(--primary-glow);
}

.drag-drop-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.upload-icon {
  width: 54px;
  height: 54px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  transition: transform 0.3s;
}

.drag-drop-area:hover .upload-icon {
  transform: translateY(-8px);
  color: var(--primary);
}

.drag-drop-content h5 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.drag-drop-content p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.file-limits {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.upload-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.btn {
  border: none;
  background: none;
  padding: 12px 24px;
  border-radius: var(--border-radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--border-color);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.instructions-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.instruction-list {
  padding-left: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.instruction-list li {
  margin-bottom: 10px;
  line-height: 1.5;
}

.instruction-list span {
  font-weight: 700;
  color: var(--text-main);
}

.instruction-list code {
  background-color: var(--border-color);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--primary);
}

.upload-status-info {
  background-color: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: var(--border-radius-md);
}

.upload-status-info h5 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 12px;
  color: var(--text-secondary);
}

.status-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.status-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.status-label {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.status-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
}

/* ==========================================
   OTROS COMPONENTES DE DISEÑO
   ========================================== */
.warning-alert-box {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 16px;
  border-radius: var(--border-radius-md);
  margin-bottom: 24px;
}

.warning-alert-box i {
  color: var(--danger);
  flex-shrink: 0;
  width: 22px;
  height: 22px;
}

.warning-alert-box p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.warning-alert-box p strong {
  color: var(--text-main);
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box i {
  position: absolute;
  left: 12px;
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}

.search-box input {
  background-color: var(--bg-app);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 12px 8px 36px;
  border-radius: var(--border-radius-sm);
  outline: none;
  font-size: 0.85rem;
  width: 260px;
  transition: all 0.3s;
}

.search-box input:focus {
  border-color: var(--primary);
  width: 320px;
}

.performance-summary-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.perf-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  padding: 8px 12px;
  border-radius: 6px;
  background-color: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
}

.perf-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.perf-circle {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.perf-circle.excelente { background-color: var(--excellent); }
.perf-circle.bueno { background-color: var(--good); }
.perf-circle.regular { background-color: var(--regular); }
.perf-circle.alerta { background-color: var(--danger); }

.perf-count {
  font-weight: 700;
}

.text-danger { color: var(--danger); }
.text-success { color: var(--excellent); }
.flex-align {
  display: flex;
  align-items: center;
  gap: 8px;
}

.border-top-danger {
  border-top: 4px solid var(--danger);
}

.border-top-success {
  border-top: 4px solid var(--excellent);
}

/* Gráfico de Reactivos con scrollbar */
.scrollable-chart-wrapper {
  overflow-x: auto;
  width: 100%;
}

.chart-canvas-scroller {
  min-width: 1200px;
  height: 380px;
}

/* ==========================================
   ADAPTATIVIDAD (MEDIA QUERIES)
   ========================================== */
@media (max-width: 1200px) {
  .grid-3-1 {
    grid-template-columns: 1.8fr 1.2fr;
  }
}

@media (max-width: 992px) {
  .app-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 16px;
  }
  .sidebar-brand {
    margin-bottom: 16px;
  }
  .sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }
  .nav-item {
    width: auto;
    padding: 8px 12px;
    font-size: 0.85rem;
  }
  .main-content {
    margin-left: 0;
    width: 100%;
    padding: 0 16px 32px 16px;
  }
  .sidebar-footer {
    display: none; /* Ocultar en móvil o recolocar */
  }
}

@media (max-width: 768px) {
  .grid-2col, .grid-3-1, .grid-1-2 {
    grid-template-columns: 1fr;
  }
  .school-summary-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }
  .school-banner-stats {
    width: 100%;
    justify-content: space-between;
  }
  .custom-select {
    width: 100%;
  }
  .search-box input {
    width: 100%;
  }
  .search-box input:focus {
    width: 100%;
  }
  .flex-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Personalización de Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}