/* ============================================
   VARIABLES CSS - TEMAS Y COLORES
   ============================================ */

:root {
  /* Colores UNAL */
  --unal-green: #2e7d32;
  --unal-dark-green: #1b5e20;
  --unal-light-green: #66bb6a;
  --unal-yellow: #ffa000;
  --unal-red: #d32f2f;
  --unal-blue: #1976d2;

  /* Tema Claro */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-sidebar: #fafafa;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --border-color: #dee2e6;
  --shadow-light: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Tema Oscuro */
[data-theme="dark"] {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-sidebar: #242424;
  --text-primary: #ffffff;
  --text-secondary: #b3b3b3;
  --border-color: #404040;
  --shadow-light: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.4);
}


/* ============================================
   ESTILOS GENERALES Y RESET
   ============================================ */

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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


/* ============================================
   SIDEBAR - BARRA LATERAL
   ============================================ */

.sidebar {
  width: 320px;
  background: var(--bg-sidebar);
  border-right: 2px solid var(--unal-green);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  background: linear-gradient(135deg, var(--unal-green), var(--unal-dark-green));
  color: white;
  padding: 20px;
  text-align: center;
}

.sidebar-header h1 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.sidebar-header p {
  font-size: 0.9rem;
  opacity: 0.9;
}

.sidebar-nav {
  padding: 20px 0;
}

.nav-item {
  padding: 12px 20px;
  cursor: pointer;
  border-left: 4px solid transparent;
  transition: all 0.3s ease;
  font-weight: 500;
}

.nav-item:hover {
  background: var(--bg-secondary);
  border-left-color: var(--unal-light-green);
}

.nav-item.active {
  background: var(--bg-secondary);
  border-left-color: var(--unal-green);
  color: var(--unal-green);
}

.sidebar-section {
  padding: 20px;
  border-top: 1px solid var(--border-color);
}

.section-title {
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--unal-green);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Overlay y toggle móvil para sidebar */
.mobile-toggle {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 200;
  background: var(--unal-green);
  color: white;
  border: none;
  padding: 10px;
  border-radius: 8px;
  cursor: pointer;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
}


/* ============================================
   CONTENIDO PRINCIPAL
   ============================================ */

.main-content {
  margin-left: 320px;
  flex: 1;
  padding: 24px;
  transition: margin-left 0.3s ease;
}

.header-bar {
  background: var(--bg-primary);
  padding: 20px;
  border-radius: 12px;
  box-shadow: var(--shadow-light);
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
}

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

.no-data {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border-radius: 12px;
}

.no-data h3 {
  margin-bottom: 12px;
  color: var(--text-primary);
}


/* ============================================
   TARJETAS DE ESTADÍSTICAS
   ============================================ */

.stats-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-primary);
  padding: 20px;
  border-radius: 10px;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: transform 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.stat-number.completed { color: var(--unal-green); }
.stat-number.current   { color: var(--unal-yellow); }
.stat-number.pending   { color: var(--unal-red); }
.stat-number.total     { color: var(--unal-blue); }

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}


/* ============================================
   TARJETAS DE SEMESTRES
   ============================================ */

.semesters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 24px;
}

.semester-card {
  background: var(--bg-primary);
  border-radius: 12px;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all 0.3s ease;
}

.semester-card.completed { border-left: 4px solid var(--unal-green); }
.semester-card.current   { border-left: 4px solid var(--unal-yellow); }
.semester-card.pending   { border-left: 4px solid var(--unal-red); }

.semester-header {
  padding: 16px 20px;
  background: var(--bg-secondary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.semester-header:hover {
  background: var(--unal-light-green);
  color: white;
}

.semester-title {
  font-weight: 600;
  font-size: 1.1rem;
}

.semester-summary {
  font-size: 0.85rem;
  opacity: 0.8;
}

.semester-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.semester-toggle {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: inherit;
  transition: transform 0.3s ease;
}

.semester-toggle.expanded {
  transform: rotate(180deg);
}

.semester-status {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-right: 8px;
}

.status-completed { background: #e8f5e8; color: var(--unal-dark-green); }
.status-current   { background: #fff8e1; color: #f57c00; }
.status-pending   { background: #ffebee; color: var(--unal-red); }

.semester-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.semester-content.expanded {
  max-height: 2000px;
}

.semester-body {
  padding: 20px;
  overflow-x: auto;
}

.semester-drop-zone {
  min-height: 40px;
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  margin: 10px 0;
  transition: all 0.3s ease;
}

.semester-drop-zone.drag-over {
  border-color: var(--unal-green);
  background: var(--bg-secondary);
}


/* ============================================
   TABLA DE MATERIAS
   ============================================ */

.subjects-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

.subjects-table th,
.subjects-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.subjects-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
}

.subjects-table tbody tr:hover {
  background: var(--bg-secondary);
}


/* ============================================
   BADGES DE TIPO DE MATERIA
   ============================================ */

.type-badge {
  padding: 3px 8px;
  border-radius: 15px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.type-obligatoria                { background: #ffcdd2; color: #b71c1c; }
.type-optativa                   { background: #c8e6c9; color: #2e7d32; }
.type-libre                      { background: #bbdefb; color: #0d47a1; }
.type-grado                      { background: #e1bee7; color: #4a148c; }
.type-nivelacion                 { background: #ffe0b2; color: #e65100; }
.type-disciplinar-obligatoria    { background: #ffcdd2; color: #b71c1c; }
.type-disciplinar-optativa       { background: #c8e6c9; color: #2e7d32; }
.type-fundamentacion-obligatoria { background: #e1f5fe; color: #01579b; }
.type-fundamentacion-optativa    { background: #f3e5f5; color: #4a148c; }
.type-libre-eleccion             { background: #bbdefb; color: #0d47a1; }
.type-trabajo-grado              { background: #e1bee7; color: #4a148c; }

/* Badges en tema oscuro */
[data-theme="dark"] .type-obligatoria,
[data-theme="dark"] .type-disciplinar-obligatoria    { background: #7f1d1d; color: #fca5a5; }

[data-theme="dark"] .type-optativa,
[data-theme="dark"] .type-disciplinar-optativa       { background: #14532d; color: #86efac; }

[data-theme="dark"] .type-libre,
[data-theme="dark"] .type-libre-eleccion             { background: #1e3a8a; color: #93c5fd; }

[data-theme="dark"] .type-grado,
[data-theme="dark"] .type-trabajo-grado              { background: #581c87; color: #c4b5fd; }

[data-theme="dark"] .type-nivelacion                 { background: #78350f; color: #fcd34d; }
[data-theme="dark"] .type-fundamentacion-obligatoria { background: #1e3a8a; color: #93c5fd; }
[data-theme="dark"] .type-fundamentacion-optativa    { background: #581c87; color: #c4b5fd; }

[data-theme="dark"] .status-completed { background: #14532d; color: #86efac; }
[data-theme="dark"] .status-current   { background: #78350f; color: #fcd34d; }
[data-theme="dark"] .status-pending   { background: #7f1d1d; color: #fca5a5; }


/* ============================================
   TARJETAS DE TIPOLOGÍAS
   ============================================ */

.typologies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.typology-card {
  background: var(--bg-secondary);
  padding: 16px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: transform 0.2s ease;
  cursor: pointer;
}

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

.typology-name {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.typology-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.typology-credits {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--unal-green);
}

.typology-count {
  font-size: 0.8rem;
  color: var(--text-secondary);
}


/* ============================================
   BOTONES Y CONTROLES
   ============================================ */

.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.btn-primary   { background: var(--unal-green);    color: white; }
.btn-success   { background: var(--unal-green);    color: white; }
.btn-warning   { background: var(--unal-yellow);   color: white; }
.btn-danger    { background: var(--unal-red);      color: white; }
.btn-secondary { background: var(--text-secondary); color: white; }

.btn-sm {
  padding: 4px 8px;
  font-size: 0.75rem;
}

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


/* ============================================
   FORMULARIOS
   ============================================ */

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--unal-green);
  box-shadow: 0 0 0 2px rgba(46, 125, 50, 0.2);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.editable-field {
  background: transparent;
  border: 1px solid transparent;
  padding: 4px 8px;
  border-radius: 4px;
  width: 100%;
}

.editable-field:hover {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

.editable-field:focus {
  background: var(--bg-primary);
  border-color: var(--unal-green);
  outline: none;
}


/* ============================================
   MODALES
   FIX: El .modal tiene overflow-y: auto para que el click
   fuera del contenido cierre el modal. El scroll se maneja
   dentro de cada modal según su tipo.
   ============================================ */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  backdrop-filter: blur(4px);
  /* overflow-y permite que el click en el fondo funcione correctamente */
  overflow-y: auto;
  /* Centrado vertical */
  display: none;
  align-items: center;
  justify-content: center;
}

/* Cuando el modal está abierto se muestra como flex */
.modal[style*="display: block"] {
  display: flex !important;
  align-items: flex-start;
  justify-content: center;
  padding: 2vh 0;
}

/* Contenido base de todos los modales */
.modal-content {
  background: var(--bg-primary);
  border-radius: 12px;
  width: 95%;
  max-width: 600px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-medium);
  /* El scroll va aquí adentro */
  max-height: 94vh;
  overflow-y: auto;
  padding: 24px;
  /* Impide que el click dentro cierre el modal */
  position: relative;
  flex-shrink: 0;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  /* Header sticky dentro del modal */
  position: sticky;
  top: -24px; /* compensa el padding */
  background: var(--bg-primary);
  z-index: 2;
  margin-top: -24px;
  padding-top: 24px;
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--unal-green);
}

.close-btn {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}

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

/* Modal de horario actual - más ancho y con grid con scroll propio */
#currentScheduleModal .modal-content {
  max-width: 1200px;
  height: 94vh;
  overflow: hidden; /* El modal en sí no hace scroll */
  display: flex;
  flex-direction: column;
  padding: 16px;
}

#currentScheduleModal .modal-header {
  position: static; /* No sticky en este modal, es flex */
  margin-top: 0;
  padding-top: 0;
  top: auto;
  flex-shrink: 0;
}

#currentScheduleContent {
  flex: 1;
  min-height: 0;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

/* Modal de construcción/edición de horario - scroll libre */
#scheduleModal .modal-content {
  max-width: 900px;
  height: 94vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 16px;
}

#scheduleModal .modal-header {
  position: static;
  margin-top: 0;
  padding-top: 0;
  top: auto;
  flex-shrink: 0;
}

/* Filtros pegados bajo el header */
#scheduleModal .schedule-filters {
  flex-shrink: 0;
}

#scheduleBuilder {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-right: 4px;
}


/* ============================================
   BANCO DE MATERIAS
   ============================================ */

.subjects-bank {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 16px;
  max-height: 300px;
  overflow-y: auto;
}

.subject-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: var(--bg-primary);
  border-radius: 6px;
  margin-bottom: 8px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
}

.subject-item:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-light);
}

.subject-info h4 {
  font-size: 0.9rem;
  margin-bottom: 4px;
}

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


/* ============================================
   MODO MOVER MATERIAS
   ============================================ */

.move-mode .subject-item,
.move-mode .subjects-table tr {
  cursor: move;
  border: 2px dashed var(--unal-blue);
}

.move-mode .subjects-table tr:hover {
  background: var(--unal-light-green);
  color: white;
}

.move-instructions {
  background: var(--unal-yellow);
  color: white;
  padding: 10px;
  border-radius: 6px;
  margin-bottom: 20px;
  text-align: center;
  font-weight: bold;
}


/* ============================================
   BARRA DE PROGRESO
   ============================================ */

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--unal-green), var(--unal-light-green));
  transition: width 0.5s ease;
}


/* ============================================
   PLANIFICADOR DE HORARIOS
   ============================================ */

.schedule-card {
  background: var(--bg-primary);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-light);
}

.schedule-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.schedule-filters input {
  flex: 1;
  min-width: 200px;
}

/* Grid de construcción de horario (preview) */
.schedule-grid {
  display: grid;
  grid-template-columns: 80px repeat(6, 1fr);
  gap: 1px;
  background: var(--border-color);
  border: 1px solid var(--border-color);
  margin-top: 16px;
  overflow-x: auto;
}

.schedule-cell {
  background: var(--bg-primary);
  padding: 8px;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.schedule-cell.header {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--unal-green);
}

.schedule-cell.time {
  background: var(--bg-secondary);
  font-weight: 500;
}

.schedule-cell.class {
  background: var(--unal-light-green);
  color: white;
  flex-direction: column;
  align-items: flex-start;
  cursor: pointer;
  transition: all 0.2s;
}

.schedule-cell.class:hover {
  transform: scale(1.02);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.class-name {
  font-weight: 600;
  font-size: 0.8rem;
  margin-bottom: 4px;
}

.class-group {
  font-size: 0.7rem;
  opacity: 0.9;
}


/* ============================================
   SELECTOR DE MATERIAS Y GRUPOS
   ============================================ */

.subject-select-card {
  background: var(--bg-secondary);
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 12px;
  border: 2px solid transparent;
  transition: all 0.2s;
  cursor: pointer;
}

.subject-select-card:hover   { border-color: var(--unal-green); }
.subject-select-card.expanded { border-color: var(--unal-green); }
.subject-select-card.selected {
  border-color: var(--unal-green);
  background: rgba(46, 125, 50, 0.1);
}

.subject-header-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.expand-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.expand-icon.expanded {
  transform: rotate(180deg);
}

.group-selector {
  display: none;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
  padding: 12px;
  background: var(--bg-primary);
  border-radius: 8px;
}

.group-selector.visible {
  display: flex;
}

.group-option {
  padding: 8px 16px;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-primary);
}

.group-option:hover { border-color: var(--unal-green); }

.group-option.selected {
  background: var(--unal-green);
  color: white;
  border-color: var(--unal-green);
}

.conflict-warning {
  background: #fff3cd;
  border: 1px solid #ffc107;
  color: #856404;
  padding: 12px;
  border-radius: 6px;
  margin-top: 12px;
}


/* ============================================
   VISUALIZADOR DE HORARIO (schedule-grid-viewer)
   FIX: El contenedor padre (#currentScheduleContent) 
   maneja el scroll. El grid define su tamaño mínimo.
   ============================================ */

/* Wrapper para el scroll horizontal en desktop */
.schedule-grid-wrapper {
  width: 100%;
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
}

.schedule-grid-viewer {
  display: grid;
  /* Desktop: columnas proporcionales */
  grid-template-columns: 80px repeat(6, minmax(100px, 1fr));
  gap: 1px;
  background: var(--border-color);
  border: 2px solid var(--border-color);
  margin-top: 12px;
  border-radius: 8px;
  /* Ancho mínimo para garantizar que caben los 6 días */
  min-width: 700px;
}

.schedule-cell-viewer {
  background: var(--bg-primary);
  padding: 6px 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  position: relative;
  min-height: 40px;
  text-align: center;
}

.schedule-cell-viewer.header {
  background: var(--bg-secondary);
  font-weight: 700;
  color: var(--unal-green);
  padding: 10px 4px;
  font-size: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

.schedule-cell-viewer.time {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.7rem;
  position: sticky;
  left: 0;
  z-index: 9;
}

/* Celda esquina (header + time) */
.schedule-cell-viewer.header:first-child {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 11;
}

.schedule-cell-viewer.class-block {
  background: linear-gradient(135deg, var(--unal-green), var(--unal-light-green));
  color: white;
  flex-direction: column;
  align-items: flex-start;
  cursor: pointer;
  transition: all 0.2s;
  padding: 6px;
  border-left: 4px solid var(--unal-dark-green);
}

.schedule-cell-viewer.class-block:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 10;
}

.class-block-name {
  font-weight: 700;
  font-size: 0.7rem;
  margin-bottom: 2px;
  line-height: 1.1;
}

.class-block-info {
  font-size: 0.6rem;
  opacity: 0.95;
  line-height: 1.2;
}

.schedule-cell-viewer.class-block[data-duration="1"] .class-block-name,
.schedule-cell-viewer.class-block[data-duration="2"] .class-block-name {
  font-size: 0.65rem;
}

.schedule-cell-viewer.class-block[data-duration="1"] .class-block-info,
.schedule-cell-viewer.class-block[data-duration="2"] .class-block-info {
  font-size: 0.55rem;
  line-height: 1.1;
}


/* ============================================
   INDICADORES DE TIEMPO ACTUAL
   ============================================ */

.schedule-cell-viewer.current-class {
  background: linear-gradient(135deg, var(--unal-yellow), #ff6f00);
  animation: pulse 2s infinite;
  border-left: 4px solid #e65100;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.85; }
}

.schedule-cell-viewer.current-time {
  background: rgba(255, 193, 7, 0.1);
  border: 2px solid var(--unal-yellow);
}

.current-day-indicator {
  background: var(--unal-yellow);
  color: white;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.65rem;
  position: absolute;
  top: 2px;
  right: 2px;
}


/* ============================================
   TARJETAS MÓVILES PARA MATERIAS
   ============================================ */

.subjects-cards-mobile {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.subject-card-mobile {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 12px;
  border: 1px solid var(--border-color);
}

.subject-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  gap: 8px;
}

.subject-card-header h4 {
  font-size: 0.95rem;
  margin: 0;
  flex: 1;
}

.subject-card-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.subject-card-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

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

.info-item label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.info-item strong {
  font-size: 1.1rem;
  color: var(--unal-green);
}

.info-item .form-control {
  font-size: 0.85rem;
  padding: 6px 8px;
}

.subject-card-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.subject-card-actions .btn {
  flex: 1;
  min-width: calc(33.333% - 4px);
  justify-content: center;
}


/* ============================================
   RESPONSIVE - TABLETS (max-width: 1200px)
   ============================================ */

@media (max-width: 1200px) {
  .semesters-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .subjects-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}


/* ============================================
   RESPONSIVE - MÓVIL (max-width: 768px)
   ============================================ */

@media (max-width: 768px) {
  /* Sidebar y navegación */
  .mobile-toggle {
    display: block;
  }

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.open {
    display: block;
  }

  /* Contenido principal */
  .main-content {
    margin-left: 0;
    padding: 60px 16px 16px;
  }

  .header-controls {
    flex-direction: column;
    align-items: stretch;
  }

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

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

  /* ---- MODALES EN MÓVIL ---- */
  /* Modal genérico: pantalla completa con scroll */
  .modal-content {
    width: 100%;
    max-width: 100%;
    height: 100dvh; /* dvh para evitar problemas con barra del navegador */
    max-height: 100dvh;
    margin: 0;
    border-radius: 0;
    padding: 12px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .modal-header {
    position: sticky;
    top: -12px; /* compensa el padding en móvil */
    padding-top: 12px;
    margin-top: -12px;
    z-index: 2;
  }

  /* Modal de horario actual en móvil: flex column, grid con scroll */
  #currentScheduleModal .modal-content {
    height: 100dvh;
    max-height: 100dvh;
    overflow: hidden; /* el grid scroll internamente */
    padding: 10px;
    display: flex;
    flex-direction: column;
  }

  #currentScheduleModal .modal-header {
    position: static;
    margin-top: 0;
    padding-top: 0;
    flex-shrink: 0;
  }

  #currentScheduleContent {
    flex: 1;
    min-height: 0;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Modal de construcción de horario en móvil */
  #scheduleModal .modal-content {
    height: 100dvh;
    max-height: 100dvh;
    overflow: hidden;
    padding: 10px;
    display: flex;
    flex-direction: column;
  }

  #scheduleModal .modal-header {
    position: static;
    margin-top: 0;
    padding-top: 0;
    flex-shrink: 0;
  }

  #scheduleModal .schedule-filters {
    flex-shrink: 0;
  }

  #scheduleBuilder {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* ---- HORARIO VIEWER EN MÓVIL ---- */
  /* FIX principal: forzar orientación horizontal con scroll */
  .schedule-grid-viewer {
    /* Columnas fijas para garantizar que todos los días son visibles */
    grid-template-columns: 48px repeat(6, 90px);
    min-width: 588px; /* 48 + (90*6) + gaps */
    margin-top: 8px;
    border-radius: 4px;
  }

  .schedule-cell-viewer {
    padding: 4px 3px;
    font-size: 0.65rem;
    min-height: 36px;
  }

  .schedule-cell-viewer.header {
    padding: 8px 3px;
    font-size: 0.68rem;
  }

  .schedule-cell-viewer.time {
    font-size: 0.65rem;
    padding: 4px 2px;
    min-width: 44px;
  }

  .class-block-name {
    font-size: 0.62rem;
    line-height: 1.1;
  }

  .class-block-info {
    font-size: 0.52rem;
  }

  .modal-title {
    font-size: 1rem;
  }

  #currentDayTime {
    font-size: 0.7rem !important;
  }
}


/* ============================================
   RESPONSIVE - MÓVIL PEQUEÑO (max-width: 480px)
   ============================================ */

@media (max-width: 480px) {
  .stats-summary {
    grid-template-columns: 1fr;
  }

  .semester-header {
    padding: 12px 16px;
  }

  .semester-body {
    padding: 16px;
  }

  .subjects-table {
    font-size: 0.8rem;
  }

  .subjects-table th,
  .subjects-table td {
    padding: 8px;
  }

  /* Horario en pantallas muy pequeñas */
  .schedule-grid-viewer {
    grid-template-columns: 40px repeat(6, 78px);
    min-width: 508px; /* 40 + (78*6) + gaps */
  }

  .schedule-cell-viewer {
    padding: 3px 2px;
    font-size: 0.6rem;
    min-height: 32px;
  }

  .schedule-cell-viewer.time {
    min-width: 36px;
  }

  .class-block-name {
    font-size: 0.58rem;
    line-height: 1;
  }

  .class-block-info {
    font-size: 0.5rem;
  }
}
/* ============================================
   MALLA CURRICULAR — añadir al FINAL de estilos.css
   ============================================ */

/* Barra de herramientas */
.malla-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.malla-toolbar-group {
    display: flex;
    align-items: center;
    gap: 6px;
    padding-right: 12px;
    border-right: 1px solid var(--border-color);
}

.malla-toolbar-group:last-child {
    border-right: none;
}

.malla-tool-btn {
    padding: 6px 14px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.malla-tool-btn:hover {
    border-color: var(--unal-green);
}

.malla-tool-btn.active {
    background: var(--unal-green);
    color: white;
    border-color: var(--unal-green);
}

.malla-tool-btn.completed.active { background: var(--unal-green);  border-color: var(--unal-green); }
.malla-tool-btn.current.active   { background: var(--unal-yellow); border-color: var(--unal-yellow); color: white; }
.malla-tool-btn.erase.active     { background: var(--unal-red);    border-color: var(--unal-red); }

.malla-zoom-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    min-width: 44px;
    text-align: center;
}

/* Contenedor principal del canvas */
.malla-canvas-wrapper {
    position: relative;
    width: 100%;
    overflow: auto;
    background: #e8e8e8;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    /* Altura calculada: pantalla menos toolbar y header */
    height: calc(100vh - 260px);
    min-height: 400px;
    cursor: crosshair;
    -webkit-overflow-scrolling: touch;
}

.malla-canvas-stack {
    position: relative;
    display: inline-block;
    /* Centrar el canvas si es más pequeño que el wrapper */
    margin: 16px;
}

#mallaCanvas {
    display: block;
    box-shadow: 0 4px 24px rgba(0,0,0,0.18);
    border-radius: 4px;
}

#mallaOverlay {
    position: absolute;
    top: 0;
    left: 0;
    cursor: crosshair;
}

/* Loading / error */
.malla-loading,
.malla-error {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 300px;
    flex-direction: column;
    gap: 16px;
    color: var(--text-secondary);
}

.malla-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--unal-green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Leyenda */
.malla-legend {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.malla-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.malla-legend-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid;
    flex-shrink: 0;
}

.malla-legend-dot.completed { background: rgba(46,125,50,0.45);  border-color: #2e7d32; }
.malla-legend-dot.current   { background: rgba(255,160,0,0.45);  border-color: #ffa000; }

.malla-stats-bar {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--unal-green);
    padding: 6px 12px;
    background: rgba(46,125,50,0.08);
    border-radius: 6px;
}

/* Responsive móvil */
@media (max-width: 768px) {
    .malla-canvas-wrapper {
        height: calc(100vh - 320px);
    }
    .malla-toolbar {
        gap: 6px;
        padding: 8px;
    }
    .malla-tool-btn {
        padding: 5px 10px;
        font-size: 0.75rem;
    }
}