/* ==============================================================================
 * ESTILOS GENERALES - PLATAFORMA ACADÉMICA CLAN
 * Colegio Los Ángeles del Norte - Grados 7° a 11°
 * ============================================================================== */

:root {
  --clan-navy: #0f172a;
  --clan-blue: #1e3a8a;
  --clan-blue-light: #2563eb;
  --clan-blue-bg: #eff6ff;
  --clan-amber: #d97706;
  --clan-amber-light: #fef3c7;
  --clan-emerald: #059669;
  --clan-emerald-light: #d1fae5;
  --clan-rose: #dc2626;
  --clan-rose-light: #fee2e2;
  --clan-gray-50: #f8fafc;
  --clan-gray-100: #f1f5f9;
  --clan-gray-200: #e2e8f0;
  --clan-gray-300: #cbd5e1;
  --clan-gray-500: #64748b;
  --clan-gray-700: #334155;
  --clan-gray-900: #0f172a;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: #f4f6f9;
  color: var(--clan-gray-900);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Encabezado */
.header-clan {
  background: linear-gradient(135deg, var(--clan-navy) 0%, #172554 50%, var(--clan-blue) 100%);
  color: white;
  padding: 1rem 1.5rem;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: 1500px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  height: 48px;
  width: auto;
  max-width: 54px;
  object-fit: contain;
  background: white;
  border-radius: 8px;
  padding: 2px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.brand-title h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #ffffff;
  line-height: 1.2;
}

.brand-title p {
  font-size: 0.78rem;
  color: #93c5fd;
  font-weight: 500;
}

/* Barra de controles superiores */
.controls-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.select-control {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: white;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.select-control:focus, .select-control:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: #60a5fa;
}

.select-control option {
  background-color: var(--clan-navy);
  color: white;
}

.search-box {
  position: relative;
}

.search-input {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: white;
  padding: 0.45rem 0.85rem 0.45rem 2.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  width: 210px;
  outline: none;
  transition: all 0.2s;
}

.search-input::placeholder {
  color: #cbd5e1;
}

.search-input:focus {
  background: rgba(255, 255, 255, 0.2);
  border-color: #93c5fd;
  width: 250px;
}

.search-icon {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  color: #93c5fd;
  pointer-events: none;
  width: 16px;
  height: 16px;
}

/* Botones de acción del encabezado */
.btn-header {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-sync {
  background-color: #10b981;
  color: white;
}

.btn-sync:hover {
  background-color: #059669;
}

.btn-settings {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-settings:hover {
  background: rgba(255, 255, 255, 0.25);
}

.sync-status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 9999px;
  background: rgba(0, 0, 0, 0.25);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #9ca3af;
  display: inline-block;
}

.status-dot.online {
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.status-dot.syncing {
  background-color: #f59e0b;
  animation: pulse 1s infinite;
}

.status-dot.offline {
  background-color: #ef4444;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Pestañas de Navegación Principal */
.nav-tabs-wrapper {
  background: white;
  border-bottom: 1px solid var(--clan-gray-200);
  box-shadow: var(--shadow-sm);
}

.nav-tabs-container {
  max-width: 1500px;
  margin: 0 auto;
  display: flex;
  overflow-x: auto;
  scrollbar-width: thin;
  padding: 0 1.5rem;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.9rem 1.25rem;
  border: none;
  background: none;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--clan-gray-500);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--clan-blue);
  background-color: var(--clan-gray-50);
}

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

.tab-badge {
  background-color: var(--clan-gray-100);
  color: var(--clan-gray-700);
  padding: 2px 7px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.tab-btn.active .tab-badge {
  background-color: var(--clan-blue-bg);
  color: var(--clan-blue);
}

/* Contenido Principal */
.main-content {
  max-width: 1500px;
  margin: 1.5rem auto;
  padding: 0 1.5rem 3rem 1.5rem;
  width: 100%;
  flex: 1;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.25s ease-in-out;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tarjetas de Métricas (KPIs) */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: white;
  border-radius: var(--radius);
  padding: 1.25rem;
  border: 1px solid var(--clan-gray-200);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.kpi-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.kpi-blue { background-color: var(--clan-blue-bg); color: var(--clan-blue); }
.kpi-emerald { background-color: var(--clan-emerald-light); color: var(--clan-emerald); }
.kpi-amber { background-color: var(--clan-amber-light); color: var(--clan-amber); }
.kpi-rose { background-color: var(--clan-rose-light); color: var(--clan-rose); }

.kpi-info h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--clan-gray-500);
  font-weight: 600;
  margin-bottom: 4px;
}

.kpi-info .kpi-value {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--clan-gray-900);
  line-height: 1.1;
}

.kpi-info .kpi-subtext {
  font-size: 0.75rem;
  color: var(--clan-gray-500);
  margin-top: 2px;
}

/* Panel Card Genérico */
.clan-card {
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--clan-gray-200);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.card-header {
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--clan-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  background-color: #fafbfc;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-title-group h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clan-gray-900);
}

.card-title-group .badge-count {
  background: var(--clan-gray-200);
  color: var(--clan-gray-700);
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Botones universales */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background-color: var(--clan-blue);
  color: white;
}
.btn-primary:hover {
  background-color: #1e3a8a;
  box-shadow: 0 2px 4px rgba(30, 58, 138, 0.3);
}

.btn-success {
  background-color: var(--clan-emerald);
  color: white;
}
.btn-success:hover {
  background-color: #047857;
}

.btn-warning {
  background-color: var(--clan-amber);
  color: white;
}
.btn-warning:hover {
  background-color: #b45309;
}

.btn-danger {
  background-color: var(--clan-rose);
  color: white;
}
.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-secondary {
  background-color: white;
  border-color: var(--clan-gray-300);
  color: var(--clan-gray-700);
}
.btn-secondary:hover {
  background-color: var(--clan-gray-50);
  border-color: var(--clan-gray-400);
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
}

/* Tablas con estilo */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.clan-table th {
  background-color: #f8fafc;
  color: var(--clan-gray-700);
  font-weight: 700;
  padding: 0.85rem 1rem;
  border-bottom: 2px solid var(--clan-gray-200);
  white-space: nowrap;
}

.clan-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--clan-gray-200);
  vertical-align: middle;
}

.clan-table tbody tr:hover {
  background-color: #f8fafc;
}

.clan-table tbody tr.retirado-row {
  opacity: 0.6;
  background-color: #fef2f2;
}

/* Estilos de Asistencia */
.attendance-actions-cell {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-attend {
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid var(--clan-gray-300);
  background: white;
  color: var(--clan-gray-700);
  cursor: pointer;
  transition: all 0.15s;
}

.btn-attend:hover {
  transform: scale(1.04);
}

.btn-attend.presente {
  background-color: var(--clan-emerald-light);
  border-color: var(--clan-emerald);
  color: #065f46;
}

.btn-attend.tarde {
  background-color: var(--clan-amber-light);
  border-color: var(--clan-amber);
  color: #92400e;
}

.btn-attend.ausente {
  background-color: var(--clan-rose-light);
  border-color: var(--clan-rose);
  color: #991b1b;
}

/* Botón Acordeón de Asistencia */
.btn-accordion-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  background-color: #f1f5f9;
  border: 1px solid var(--clan-gray-300);
  color: var(--clan-gray-700);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-accordion-toggle:hover {
  background-color: var(--clan-blue-bg);
  border-color: #93c5fd;
  color: var(--clan-blue);
}

.btn-accordion-toggle.active {
  background-color: var(--clan-blue);
  border-color: var(--clan-blue);
  color: white;
}

.chevron-icon {
  transition: transform 0.25s ease;
  width: 14px;
  height: 14px;
}

.btn-accordion-toggle.active .chevron-icon {
  transform: rotate(180deg);
}

/* Fila de Acordeón Desplegable */
.accordion-detail-row {
  display: none;
  background-color: #f8fafc;
}

.accordion-detail-row.open {
  display: table-row;
  animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
  from { opacity: 0; }
  to { opacity: 1; }
}

.accordion-box {
  padding: 1.25rem;
  background: white;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  margin: 0.5rem 0;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.accordion-summary-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--clan-gray-200);
}

.badge-stat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.badge-presente { background: var(--clan-emerald-light); color: #065f46; }
.badge-tarde { background: var(--clan-amber-light); color: #92400e; }
.badge-ausente { background: var(--clan-rose-light); color: #991b1b; }

.attendance-history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
  gap: 8px;
  max-height: 250px;
  overflow-y: auto;
  padding: 4px;
}

.history-card {
  background: #f8fafc;
  border: 1px solid var(--clan-gray-200);
  border-radius: 6px;
  padding: 6px 8px;
  text-align: center;
  font-size: 0.78rem;
}

.history-card .h-date {
  font-weight: 700;
  color: var(--clan-gray-700);
}

.history-card .h-status {
  margin-top: 4px;
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.72rem;
}

/* Inputs de Notas */
.grade-input {
  width: 58px;
  padding: 0.35rem 0.45rem;
  text-align: center;
  font-weight: 700;
  font-size: 0.88rem;
  border-radius: 6px;
  border: 1px solid var(--clan-gray-300);
  outline: none;
  transition: all 0.15s;
}

.grade-input:focus {
  border-color: var(--clan-blue);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

/* Semáforo de notas */
.grade-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.85rem;
  text-align: center;
}

.grade-superior { background-color: #d1fae5; color: #065f46; border: 1px solid #6ee7b7; }
.grade-alto { background-color: #dbeafe; color: #1e40af; border: 1px solid #93c5fd; }
.grade-basico { background-color: #fef3c7; color: #92400e; border: 1px solid #fcd34d; }
.grade-bajo { background-color: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }

/* Modales */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.open {
  display: flex;
  animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-dialog {
  background: white;
  border-radius: var(--radius);
  max-width: 650px;
  width: 100%;
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.25);
  overflow: hidden;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-dialog.modal-lg {
  max-width: 850px;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--clan-gray-200);
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clan-gray-900);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--clan-gray-200);
  background: #f8fafc;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Formularios */
.form-group {
  margin-bottom: 1.1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clan-gray-700);
  margin-bottom: 5px;
}

.form-control {
  width: 100%;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--clan-gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-control:focus {
  border-color: var(--clan-blue);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

/* Gráficos Grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 1.5rem;
}

.chart-card {
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--clan-gray-200);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.chart-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clan-gray-900);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chart-canvas-wrapper {
  position: relative;
  height: 280px;
  width: 100%;
}

/* Toast Notificaciones */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 200;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 420px;
  padding: 12px 16px;
  border-radius: 8px;
  background: white;
  color: var(--clan-gray-900);
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.15), 0 4px 6px -2px rgba(0,0,0,0.1);
  display: flex;
  align-items: center;
  gap: 12px;
  border-left: 5px solid var(--clan-blue);
  font-size: 0.88rem;
  font-weight: 500;
  animation: toastSlide 0.3s ease-out;
}

.toast.success { border-left-color: var(--clan-emerald); }
.toast.warning { border-left-color: var(--clan-amber); }
.toast.error { border-left-color: var(--clan-rose); }

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

/* Estilos de impresión */
@media print {
  .header-clan, .nav-tabs-wrapper, .card-actions, .btn, .search-box, .btn-accordion-toggle {
    display: none !important;
  }
  body {
    background: white;
    font-size: 11pt;
  }
  .main-content {
    padding: 0;
    margin: 0;
    max-width: 100%;
  }
  .clan-card {
    border: none;
    box-shadow: none;
  }
  .clan-table th, .clan-table td {
    border: 1px solid #333;
    padding: 6px;
  }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: stretch;
  }
  .controls-bar {
    justify-content: space-between;
  }
  .search-input {
    width: 100%;
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
}