/**
 * Sistema Educativo - Estilos Principales
 * Autor: Ulises Quintero
 * Empresa: OHMEDIA MX
 * Diseño: Glassmorphism Minimalista
 */

:root {
  /* ── Paleta de colores ────────────────────────────────────────── */
  --indigo:        #6366F1;
  --indigo-dark:   #4F46E5;
  --cyan:          #06B6D4;
  --cyan-dark:     #0891B2;
  --amber:         #F59E0B;
  --amber-dark:    #D97706;
  --emerald:       #10B981;
  --emerald-dark:  #059669;
  --coral:         #EF4444;
  --coral-dark:    #DC2626;
  --purple:        #8B5CF6;
  --purple-dark:   #7C3AED;
  --pink:          #EC4899;
  --pink-dark:     #DB2777;

  /* ── Colores principales ──────────────────────────────────────── */
  --color-primary:       #F8FAFC;
  --color-primary-dark:  #F1F5F9;
  --color-primary-light: #FFFFFF;
  --color-accent:        #6366F1;
  --color-accent-hover:  #4F46E5;

  /* ── Colores de estado ─────────────────────────────────────────── */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error:   #EF4444;
  --color-info:    #3B82F6;

  /* ── Texto ─────────────────────────────────────────────────────── */
  --text-primary:   #334155;
  --text-secondary: #64748B;
  --text-light:     #94A3B8;
  --text-on-dark:   #F1F5F9;

  /* ── Glass / Cards ─────────────────────────────────────────────── */
  --glass-bg:     rgba(255, 255, 255, 0.95);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-shadow: 0 4px 16px rgba(15, 23, 42, 0.12);
  --glass-blur:   blur(20px);

  /* ── Gradientes para stats cards ───────────────────────────────── */
  --grad-1: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
  --grad-2: linear-gradient(135deg, #F093FB 0%, #F5576C 100%);
  --grad-3: linear-gradient(135deg, #4FACFE 0%, #00F2FE 100%);
  --grad-4: linear-gradient(135deg, #43E97B 0%, #38F9D7 100%);

  /* ── Sombras ───────────────────────────────────────────────────── */
  --shadow-sm:    0 2px 8px  rgba(15, 23, 42, 0.08);
  --shadow-md:    0 4px 16px rgba(15, 23, 42, 0.12);
  --shadow-lg:    0 8px 24px rgba(15, 23, 42, 0.16);
  --shadow-hover: 0 12px 32px rgba(99, 102, 241, 0.24);

  /* ── Sidebar ───────────────────────────────────────────────────── */
  --sidebar-closed:  80px;   /* colapsado (default al cargar) */
  --sidebar-open:   280px;   /* abierto */

  /* ── Header ────────────────────────────────────────────────────── */
  --header-height: 70px;

  /* ── Spacing (múltiplos de 4px) ────────────────────────────────── */
  --spacing-xs: 0.25rem;   /* 4px  */
  --spacing-sm: 0.5rem;    /* 8px  */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */

  /* ── Border radius ─────────────────────────────────────────────── */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* ── Transitions ───────────────────────────────────────────────── */
  --transition-fast:   0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #EEF2FF 0%, #F8FAFC 55%, #F0F9FF 100%);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Layout principal */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar — all sidebar CSS is self-contained in app/includes/sidebar.php */

/* Header */
.main-header {
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.07);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
  position: fixed;
  top: 0;
  left: 80px;   /* valor inicial colapsado; JS lo actualiza */
  right: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  transition: left 0.3s ease;
}


.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.header-search {
  position: relative;
  width: 300px;
}

.header-search-input {
  width: 100%;
  padding: 10px 14px 10px 38px;
  border: 1.5px solid #E2E8F0;
  border-radius: 999px;
  background: #F8FAFC;
  font-size: 0.875rem;
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.header-search-input::placeholder { color: var(--text-light); }

.header-search-input:focus {
  border-color: #6366F1;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.header-search-icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  pointer-events: none;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Centro del header (zona libre) */
.header-center {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 var(--spacing-md);
}

/* Barra de Acciones Rápidas (solo iconos + tooltip) */
.quick-actions-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
  max-width: 620px;
  /* IMPORTANTE: el tooltip usa pseudo-elementos fuera del contenedor */
  overflow: visible;
}

/* Variante para colocar las acciones rápidas en el header-right (junto a notificaciones) */
.quick-actions-bar.quick-actions-inline {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  max-width: none;
}

.quick-actions-bar.quick-actions-inline .qa-btn {
  width: 40px;
  height: 40px;
}

.qa-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text);
  text-decoration: none;
  position: relative;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.qa-btn:hover {
  background: #EEF2FF;
  color: #6366F1;
  transform: translateY(-1px);
}

/* Tooltip */
.qa-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: -40px;
  transform: translateX(-50%) translateY(-6px);
  background: rgba(15, 23, 42, 0.92);
  color: #fff;
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease, transform 140ms ease;
  z-index: 999;
}

.qa-btn::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -10px;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-bottom-color: rgba(15, 23, 42, 0.92);
  opacity: 0;
  transition: opacity 140ms ease;
  z-index: 999;
}

.qa-btn:hover::after,
.qa-btn:hover::before {
  opacity: 1;
}

.qa-btn:hover::after {
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 1024px) {
  .header-center {
    display: none;
  }
}

.header-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.header-action-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: #F8FAFC;
  border: 1.5px solid #E2E8F0;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  text-decoration: none;
}

.header-action-btn:hover {
  background: #EEF2FF;
  border-color: #6366F1;
  color: #6366F1;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.header-action-btn .badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 18px;
  height: 18px;
  background: var(--color-error);
  color: white;
  border-radius: 50%;
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border: 2px solid var(--color-primary-light);
}

.header-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  background: #F8FAFC;
  border: 1.5px solid #E2E8F0;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.header-user:hover {
  background: #EEF2FF;
  border-color: #6366F1;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.12);
}

.header-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
}

.header-user-info {
  display: flex;
  flex-direction: column;
}

.header-user-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

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

/* Main content */
.main-content {
  flex: 1;
  margin-left: 80px;   /* valor inicial colapsado; JS lo actualiza */
  margin-top: var(--header-height);
  padding: var(--spacing-xl);
  transition: margin-left 0.3s ease;
  min-height: calc(100vh - var(--header-height));
}


/* Page header */
.page-header {
  margin-bottom: var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.page-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.page-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.breadcrumb-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
  color: var(--color-accent);
}

.breadcrumb-separator {
  color: var(--text-light);
}

/* Botones */
.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  font-family: inherit;
  letter-spacing: 0.01em;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
  background: linear-gradient(135deg, #4F46E5 0%, #4338CA 100%);
}

.btn-secondary {
  background: #F8FAFC;
  color: #64748B;
  border: 1.5px solid #E2E8F0;
}

.btn-secondary:hover {
  background: #F1F5F9;
  border-color: #CBD5E1;
  color: #334155;
  transform: translateY(-1px);
}

.btn-success {
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
}

.btn-warning {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4);
}

.btn-danger {
  background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(239, 68, 68, 0.4);
}

.btn-info {
  background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-info:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

.btn-ghost {
  background: transparent;
  color: #6366F1;
  border: 1.5px solid #6366F1;
}

.btn-ghost:hover {
  background: #EEF2FF;
  border-color: #4F46E5;
}

/* ── Botones extra con colores específicos ───────────────────────── */
.btn-indigo  { background:linear-gradient(135deg,#6366F1,#4F46E5); color:#fff; box-shadow:0 4px 14px rgba(99,102,241,.35); }
.btn-cyan    { background:linear-gradient(135deg,#06B6D4,#0891B2); color:#fff; box-shadow:0 4px 14px rgba(6,182,212,.35); }
.btn-emerald { background:linear-gradient(135deg,#10B981,#059669); color:#fff; box-shadow:0 4px 14px rgba(16,185,129,.35); }
.btn-amber   { background:linear-gradient(135deg,#F59E0B,#D97706); color:#fff; box-shadow:0 4px 14px rgba(245,158,11,.35); }
.btn-coral   { background:linear-gradient(135deg,#EF4444,#DC2626); color:#fff; box-shadow:0 4px 14px rgba(239,68,68,.35); }
.btn-purple  { background:linear-gradient(135deg,#8B5CF6,#7C3AED); color:#fff; box-shadow:0 4px 14px rgba(139,92,246,.35); }
.btn-pink    { background:linear-gradient(135deg,#EC4899,#DB2777); color:#fff; box-shadow:0 4px 14px rgba(236,72,153,.35); }
.btn-indigo:hover,.btn-cyan:hover,.btn-emerald:hover,.btn-amber:hover,
.btn-coral:hover,.btn-purple:hover,.btn-pink:hover {
  transform:translateY(-2px); filter:brightness(1.08);
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
}

.btn-sm {
  padding: 6px var(--spacing-md);
  font-size: 0.8rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Cards */
.card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--glass-border);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.card-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.card-body {
  color: var(--text-secondary);
  line-height: 1.6;
}

.card-footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-cols-4,
  .grid-cols-3,
  .grid-cols-2 { grid-template-columns: 1fr; }
}

/* Stats cards */
.stats-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.stats-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.stats-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  flex-shrink: 0;
}

.stats-icon.primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
}

.stats-icon.success {
  background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
}

.stats-icon.warning {
  background: linear-gradient(135deg, var(--color-warning) 0%, #D97706 100%);
}

.stats-icon.error {
  background: linear-gradient(135deg, var(--color-error) 0%, #DC2626 100%);
}

.stats-content {
  flex: 1;
}

.stats-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.stats-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stats-change {
  font-size: 0.8rem;
  margin-top: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.stats-change.positive {
  color: var(--color-success);
}

.stats-change.negative {
  color: var(--color-error);
}

/* Tabla */
.table-container {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table thead {
  background: #F8FAFC;
}

.table th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #334155 !important;
  border-bottom: 2px solid var(--glass-border);
}

.table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--glass-border);
  color: #334155;
}

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

.table tbody tr:hover {
  background: #F8FAFC;
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* Fallback: any table thead th in the system gets readable color */
table thead th {
  color: #334155;
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.form-label.required::after {
  content: '*';
  color: var(--color-error);
  margin-left: 4px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: calc(var(--spacing-sm) + 1px) var(--spacing-md);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.38);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(15, 23, 42, 0.45);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: rgba(87, 202, 250, 0.75);
  box-shadow: 0 0 0 4px rgba(87, 202, 250, 0.18);
  background: rgba(255, 255, 255, 0.55);
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(15,23,42,0.55)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 38px;
}

.form-input[disabled],
.form-select[disabled],
.form-textarea[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-help {
  color: rgba(15, 23, 42, 0.6);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 0 0 3px rgba(87, 202, 250, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-help {
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: var(--spacing-xs);
}

.form-error {
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}


/* Compat (legacy): inputs/selects usados en filtros y buscadores */
.input,
.select,
textarea.input {
  width: 100%;
  padding: calc(var(--spacing-sm) + 1px) var(--spacing-md);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.38);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  outline: none;
}

.input::placeholder,
textarea.input::placeholder {
  color: rgba(15, 23, 42, 0.45);
}

.input:focus,
.select:focus,
textarea.input:focus {
  border-color: rgba(87, 202, 250, 0.75);
  box-shadow: 0 0 0 4px rgba(87, 202, 250, 0.18);
  background: rgba(255, 255, 255, 0.55);
}

.select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(15,23,42,0.55)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 42px;
}

/* Modal/Lightbox */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(31, 38, 135, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px 0 rgba(31, 38, 135, 0.3);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  font-size: 1.5rem;
  line-height: 1;
}

.modal-close:hover {
  color: var(--color-error);
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-footer {
  padding: var(--spacing-xl);
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
}

/* ── Badges base ─────────────────────────────────────────────────── */
.badge-primary        { background:#E0E7FF; color:#3730A3; }
.badge-success        { background:#D1FAE5; color:#065F46; }
.badge-warning        { background:#FEF3C7; color:#92400E; }
.badge-error          { background:#FEE2E2; color:#991B1B; }
.badge-info           { background:#DBEAFE; color:#1D4ED8; }
/* ── Tipos de publicación ────────────────────────────────────────── */
.badge-importante     { background:#FEF3C7; color:#92400E; }
.badge-servicio       { background:#D1FAE5; color:#065F46; }
.badge-anuncio        { background:#E0E7FF; color:#3730A3; }
.badge-urgente        { background:#FEE2E2; color:#991B1B; }
/* ── Tipos de evento / área ──────────────────────────────────────── */
.badge-academico      { background:#EDE9FE; color:#5B21B6; }
.badge-administrativo { background:#E0E7FF; color:#3730A3; }
.badge-festivo        { background:#FCE7F3; color:#9D174D; }

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(20px);
  }
}

.fade-in {
  animation: fadeIn var(--transition-slow) ease forwards;
}

.fade-out {
  animation: fadeOut var(--transition-slow) ease forwards;
}

/* Loading spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(87, 202, 250, 0.2);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(248, 250, 252, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.active {
    transform: translateX(0);
  }
  
  .main-header {
    left: 0;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .header-search {
    width: 200px;
  }
  
  .stats-card {
    flex-direction: column;
    text-align: center;
  }
}

/* Utilidades */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.hidden { display: none; }
.block { display: block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }




/* Carreras: tarjetas drag & drop */
.career-card{cursor:grab; user-select:none;}
.career-card:active{cursor:grabbing;}
.career-card.dragging{opacity:0.65; transform:scale(0.98);}
.career-card.drag-over{outline:2px dashed rgba(87, 202, 250, 0.7); outline-offset:4px;}
.career-card .stats-value{font-size:1.05rem; line-height:1.2;}
.career-card .stats-change{font-size:0.8rem;}

/* Carreras: el ícono es el único trigger de navegación */
.career-open{
  border:0;
  padding:0;
  cursor:pointer;
  position:relative;
}
.career-open:focus{outline:2px solid rgba(87, 202, 250, 0.7); outline-offset:3px;}

/* Tooltip minimalista para el ícono (igual de discreto que el del sidebar) */
.career-open::after{
  content: attr(data-tooltip);
  position:absolute;
  left:50%;
  top: calc(100% + 10px);
  transform: translateX(-50%);
  background: rgba(17, 24, 39, 0.92);
  color:#fff;
  font-size:12px;
  padding:6px 10px;
  border-radius:10px;
  white-space:nowrap;
  opacity:0;
  pointer-events:none;
  transition: opacity 0.12s ease;
  z-index: 50;
}
.career-open:hover::after{opacity:1;}


/* -----------------------------
   Materias / Tablero (estilo tipo LMS)
------------------------------ */
.course-hero{
  display:flex;
  gap:14px;
  align-items:center;
  padding:18px 20px;
  border-radius:18px;
  background: linear-gradient(135deg, rgba(87,202,250,0.28), rgba(87,202,250,0.06));
  border: 1px solid rgba(87,202,250,0.18);
  margin-bottom:14px;
}
.course-hero-icon{
  width:44px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background: rgba(255,255,255,0.6);
  border: 1px solid rgba(87,202,250,0.25);
  font-size:22px;
}
.course-hero-title{
  font-weight:700;
  font-size:18px;
  letter-spacing: .2px;
}
.course-hero-subtitle{
  margin-top:2px;
  color: var(--text-secondary);
  font-size: 13px;
}

.course-tabs{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  padding:10px 12px;
  border-radius:16px;
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(0,0,0,0.05);
  margin-bottom:16px;
}
.course-tab{
  display:flex;
  gap:8px;
  align-items:center;
  padding:10px 12px;
  border-radius:12px;
  text-decoration:none;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: all .15s ease;
  background: transparent;
}
.course-tab:hover{
  background: rgba(87,202,250,0.10);
  color: var(--text-primary);
}
.course-tab.active{
  color: var(--text-primary);
  background: rgba(87,202,250,0.16);
  border-color: rgba(87,202,250,0.22);
}
.course-tab span{
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .4px;
  text-transform: uppercase;
}

.grid-3{
  display:grid;
  grid-template-columns: 320px 1fr 320px;
  gap:16px;
}
@media (max-width: 1100px){
  .grid-3{ grid-template-columns: 1fr; }
}
.avatar-xl{
  width:84px;
  height:84px;
  border-radius:999px;
  background: rgba(87,202,250,0.18);
  border: 2px solid rgba(87,202,250,0.22);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:28px;
  margin: 0 auto;
}

.post-card{
  border: 1px solid rgba(0,0,0,0.06);
  background: rgba(255,255,255,0.65);
  border-radius: 16px;
  padding:14px;
  margin-bottom:12px;
}
.post-meta{
  display:flex;
  align-items:center;
  gap:10px;
}
.post-avatar{
  width:38px;
  height:38px;
  border-radius:999px;
  background: rgba(87,202,250,0.18);
  border: 1px solid rgba(87,202,250,0.22);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
}
.post-author{ font-weight:700; font-size: 12px; letter-spacing:.4px; }
.post-date{ color: var(--text-secondary); font-size: 12px; }
.post-content{ margin-top:12px; }
.chip{
  display:inline-flex;
  align-items:center;
  padding:6px 10px;
  border-radius: 999px;
  background: rgba(87,202,250,0.14);
  border: 1px solid rgba(87,202,250,0.20);
  color: var(--text-primary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .5px;
}
.post-title{
  margin:10px 0 6px;
  font-size: 16px;
  font-weight: 800;
}
.post-actions{
  display:flex;
  gap:10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.mini-stats{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:10px;
}
.mini-stat{
  padding: 12px;
  border-radius: 16px;
  background: rgba(87,202,250,0.10);
  border: 1px solid rgba(87,202,250,0.18);
  text-align:center;
}
.mini-stat-num{
  font-size: 20px;
  font-weight: 900;
}
.mini-stat-label{
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
}

.simple-list{
  margin:0;
  padding-left: 16px;
  color: var(--text-secondary);
}
.simple-list li{ margin: 6px 0; }



/* Number icon inside stats-icon */
.icon-number{
  font-weight:700;
  font-size:18px;
  line-height:1;
}

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

/* ============================================================
   STATS GRID — Sistema unificado de tarjetas de estadísticas
   Usar: .stats-grid > .stat-card > (.stat-icon + .stat-content)
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-content {
  flex: 1;
  min-width: 0;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

@media (max-width: 767px) {
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .stat-card {
    padding: var(--spacing-md);
  }
  .stat-value { font-size: 1.75rem; }
}


/* ============================================================
   RESPONSIVE MOBILE-FIRST
   Breakpoints:
     Mobile  : < 768px  (max-width: 767px)
     Tablet  : 768–1023px
     Desktop : 1024px+  (existing styles)
   ============================================================ */

/* ── Bottom Navigation Bar ───────────────────────────────────
   Base: hidden on all sizes, enabled on mobile via media query */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 62px;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(99, 102, 241, 0.1);
  z-index: 150;
  justify-content: space-around;
  align-items: center;
  padding: 0 4px;
  box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.08);
}

.bnav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  height: 100%;
  gap: 3px;
  color: var(--text-light);
  font-size: 0.6rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.3px;
  transition: color var(--transition-fast);
  min-width: 44px;
  position: relative;
}

.bnav-item svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.8;
}

.bnav-item.active {
  color: var(--color-accent);
}

.bnav-item:hover {
  color: var(--color-accent);
}

.bnav-item.active svg {
  stroke-width: 2.4;
}

/* Botón central Inicio — destacado */
.bnav-center {
  position: relative;
  top: -10px;
  background: var(--color-accent);
  color: #fff !important;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  flex: none;
  box-shadow: 0 4px 16px rgba(99,102,241,0.45);
  padding-bottom: 2px;
}
.bnav-center svg { stroke-width: 2; }
.bnav-center.active,
.bnav-center:hover { color: #fff !important; background: var(--color-accent-hover); }

.bnav-badge {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(4px);
  background: var(--color-error);
  color: #fff;
  font-size: 0.58rem;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  padding: 0 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid #fff;
  line-height: 1;
}

/* Mobile search button — hidden by default, shown on mobile */
.header-search-mobile-btn {
  display: none;
}

/* ── Mobile: max-width 767px ─────────────────────────────── */
@media (max-width: 767px) {

  /* Bottom nav on */
  .bottom-nav { display: flex; }

  /* Main content: pad bottom to clear bottom nav */
  .main-content {
    padding-bottom: calc(var(--spacing-xl) + 70px) !important;
    margin-left: 0 !important;
  }

  /* Header: compact */
  .main-header {
    left: 0 !important;
    height: 56px;
    padding: 0 var(--spacing-md);
  }

  /* Hide search bar and quick-actions on mobile */
  .header-search { display: none; }
  .quick-actions-bar { display: none !important; }

  /* Show mobile search toggle */
  .header-search-mobile-btn { display: flex; }

  /* Mobile expanded search bar (toggled via JS) */
  .header-search.mob-visible {
    display: flex;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    z-index: 350;
    background: rgba(255,255,255,0.98);
    border-top: 1px solid #E2E8F0;
    border-bottom: 1px solid #E2E8F0;
    border-radius: 0;
    width: 100%;
    padding: 8px 16px;
  }

  .header-search.mob-visible .header-search-input {
    width: 100%;
    border-radius: var(--radius-md);
  }

  /* Fullscreen modals */
  .modal-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .modal-overlay .modal {
    width: 100% !important;
    max-width: 100% !important;
    max-height: 92dvh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
    margin: 0;
    overflow-y: auto;
  }

  /* Board virtual classroom modals */
  .bv-modal {
    width: 100% !important;
    max-width: 100% !important;
    max-height: 92dvh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
    margin: 0;
    overflow-y: auto;
  }

  .bv-modal-bg {
    align-items: flex-end;
  }

  /* Touch targets */
  .btn { min-height: 44px; padding-top: 10px; padding-bottom: 10px; }
  .form-input, .form-select, .form-textarea { min-height: 44px; }

  /* Tables: horizontal scroll */
  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .card-body > table,
  .table-container > table {
    min-width: 480px;
  }

  /* Grids: 2-col on mobile for stats, 1-col for forms */
  .grid.grid-cols-3,
  .grid.grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid.grid-cols-2,
  .form-grid {
    grid-template-columns: 1fr !important;
  }

  /* Board virtual classroom tabs: horizontal scroll */
  .bv-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
  }

  .bv-tab {
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* Page header: stack on mobile */
  .page-header {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }

  .page-actions {
    width: 100%;
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
  }

  .page-actions .btn {
    flex: 1;
    text-align: center;
    justify-content: center;
  }

  /* Cards: reduce padding */
  .card-body { padding: var(--spacing-md); }
  .card-header { padding: var(--spacing-md); }

  /* Breadcrumb: scrollable on mobile */
  .breadcrumb {
    overflow-x: auto;
    white-space: nowrap;
    flex-wrap: nowrap;
    padding-bottom: 2px;
  }

  /* DB layout: already collapses at 1100px, ensure on mobile */
  .db-layout { grid-template-columns: 1fr !important; }
  .db-aside { order: -1; }

}

/* ── Tablet: 768px – 1023px ──────────────────────────────── */
@media (min-width: 768px) and (max-width: 1023px) {

  /* 2-col grids on tablet */
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }

  /* Main content with collapsed sidebar */
  .main-content { margin-left: var(--sidebar-closed); }

  /* Board tabs scrollable */
  .bv-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  .bv-tab { white-space: nowrap; flex-shrink: 0; }
}

/* ── Print: hide bottom nav ──────────────────────────────── */
@media print {
  .bottom-nav { display: none !important; }
}