/* ========================================
   PROFORMA - Sistema de Diseño Profesional
   ======================================== */

:root {
  /* Paleta de Colores Principal */
  --primary-900: #0f172a;
  --primary-800: #1e293b;
  --primary-700: #334155;
  --primary-600: #475569;
  --primary-500: #64748b;
  --primary-400: #94a3b8;
  --primary-300: #cbd5e1;
  --primary-200: #e2e8f0;
  --primary-100: #f1f5f9;
  --primary-50: #f8fafc;
  
  /* Accent Colors */
  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-primary-light: #dbeafe;
  --accent-success: #10b981;
  --accent-success-hover: #059669;
  --accent-success-light: #d1fae5;
  --accent-warning: #f59e0b;
  --accent-warning-hover: #d97706;
  --accent-warning-light: #fef3c7;
  --accent-danger: #ef4444;
  --accent-danger-hover: #dc2626;
  --accent-danger-light: #fee2e2;
  --accent-info: #06b6d4;
  --accent-info-hover: #0891b2;
  --accent-info-light: #cffafe;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Shadows */
  --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, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Transitions */
  --transition-base: all 0.2s ease-in-out;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   Base Styles
   ======================================== */

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

body {
  font-family: var(--font-primary);
  background-color: var(--primary-50);
  color: var(--primary-800);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary-900);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.25rem; letter-spacing: -0.025em; }
h2 { font-size: 1.875rem; letter-spacing: -0.025em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--primary-600);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition-base);
}

a:hover {
  color: var(--accent-primary-hover);
}

/* ========================================
   Navbar
   ======================================== */

.navbar-custom {
  background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 100%);
  box-shadow: var(--shadow-lg);
  padding: 0;
  border-bottom: 3px solid var(--accent-primary);
}

.navbar-custom .navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  padding: 1rem 1.5rem;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar-custom .navbar-brand i {
  font-size: 1.75rem;
  color: var(--accent-primary);
}

.navbar-custom .nav-link {
  color: rgba(255, 255, 255, 0.85);
  padding: 1.25rem 1.25rem;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: var(--transition-base);
  border-bottom: 3px solid transparent;
  position: relative;
}

.navbar-custom .nav-link:hover,
.navbar-custom .nav-link.active {
  color: white;
  background-color: rgba(255, 255, 255, 0.1);
  border-bottom-color: var(--accent-primary);
}

.navbar-custom .nav-link i {
  margin-right: 0.5rem;
  font-size: 1.125rem;
}

.navbar-custom .dropdown-menu {
  border: none;
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  margin-top: 0.5rem;
}

.navbar-custom .dropdown-item {
  border-radius: var(--radius-md);
  padding: 0.625rem 1rem;
  font-size: 0.9375rem;
  transition: var(--transition-base);
}

.navbar-custom .dropdown-item:hover {
  background-color: var(--primary-100);
  color: var(--primary-900);
}

/* Notification Bell */
#notifBell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem 1.25rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition-base);
}

#notifBell:hover {
  color: white;
  background-color: rgba(255, 255, 255, 0.1);
}

#notifBadge {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: var(--accent-danger);
  color: white;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.125rem 0.375rem;
  border-radius: 1rem;
  min-width: 1.25rem;
  text-align: center;
  box-shadow: 0 0 0 2px var(--primary-900);
}

/* ========================================
   Container & Layout
   ======================================== */

.container-custom {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.page-header {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--accent-primary);
}

.page-header h1 {
  margin-bottom: 0.5rem;
  color: var(--primary-900);
}

.page-header p {
  color: var(--primary-500);
  margin-bottom: 0;
  font-size: 1rem;
}

/* ========================================
   Cards
   ======================================== */

.card-custom {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--primary-200);
  transition: var(--transition-smooth);
  height: 100%;
}

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

.card-custom .card-header-custom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--primary-100);
  margin-bottom: var(--spacing-lg);
}

.card-custom .card-header-custom h3 {
  margin-bottom: 0;
  font-size: 1.25rem;
  color: var(--primary-900);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-custom .card-header-custom i {
  color: var(--accent-primary);
  font-size: 1.5rem;
}

.card-custom .card-body-custom {
  color: var(--primary-600);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* Stats Card */
.stats-card {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-hover) 100%);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  color: white;
  box-shadow: var(--shadow-lg);
  border: none;
  transition: var(--transition-smooth);
}

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

.stats-card .stats-icon {
  font-size: 2.5rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-md);
}

.stats-card .stats-value {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  line-height: 1;
}

.stats-card .stats-label {
  font-size: 0.9375rem;
  opacity: 0.9;
  font-weight: 500;
}

/* Variant Colors */
.stats-card.success {
  background: linear-gradient(135deg, var(--accent-success) 0%, var(--accent-success-hover) 100%);
}

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

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

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

/* ========================================
   Buttons
   ======================================== */

.btn-custom {
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-md);
  border: none;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.btn-custom:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-custom:active {
  transform: translateY(0);
}

.btn-custom i {
  font-size: 1.125rem;
}

/* Button Variants */
.btn-primary-custom {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-hover) 100%);
  color: white;
}

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

.btn-success-custom {
  background: linear-gradient(135deg, var(--accent-success) 0%, var(--accent-success-hover) 100%);
  color: white;
}

.btn-success-custom:hover {
  background: var(--accent-success-hover);
  color: white;
}

.btn-warning-custom {

/* Historial modal styles */
.hist-icon {
  font-size: 1.05rem;
  margin-right: 0.5rem;
  vertical-align: middle;
}

.hist-icon.text-success { color: var(--accent-success); }
.hist-icon.text-info { color: var(--accent-info); }
.hist-icon.text-warning { color: var(--accent-warning); }
.hist-icon.text-danger { color: var(--accent-danger); }
.hist-icon.text-primary { color: var(--accent-primary); }

#historialFilter { min-width: 180px; }
#historialCount { font-weight: 700; }
  background: linear-gradient(135deg, var(--accent-warning) 0%, var(--accent-warning-hover) 100%);
  color: white;
}

.btn-warning-custom:hover {
  background: var(--accent-warning-hover);
  color: white;
}

.btn-danger-custom {
  background: linear-gradient(135deg, var(--accent-danger) 0%, var(--accent-danger-hover) 100%);
  color: white;
}

.btn-danger-custom:hover {
  background: var(--accent-danger-hover);
  color: white;
}

.btn-outline-custom {
  background: white;
  color: var(--primary-700);
  border: 2px solid var(--primary-300);
}

.btn-outline-custom:hover {
  background: var(--primary-50);
  border-color: var(--primary-400);
  color: var(--primary-900);
}

.btn-sm-custom {
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  min-width: auto;
  white-space: nowrap;
}

.btn-lg-custom {
  padding: 1rem 2rem;
  font-size: 1.0625rem;
}

/* ========================================
   Tables
   ======================================== */

.table-custom {
  width: 100%;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  table-layout: auto;
}

.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-lg);
}

.table-custom thead {
  background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 100%);
  color: white;
}

.table-custom thead th {
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  white-space: nowrap;
}

.table-custom thead th:nth-child(1) { width: 15%; } /* PROPUESTA */
.table-custom thead th:nth-child(2) { width: 14%; } /* EMPRESA */
.table-custom thead th:nth-child(3) { width: 15%; } /* CURSO */
.table-custom thead th:nth-child(4) { width: 10%; } /* CONTACTO */
.table-custom thead th:nth-child(5) { width: 12%; } /* CORREO */
.table-custom thead th:nth-child(6) { width: 10%; } /* MODALIDAD */
.table-custom thead th:nth-child(7) { width: 8%; }  /* CREADO POR */
.table-custom thead th:nth-child(8) { width: 8%; }  /* FECHA */
.table-custom thead th:nth-child(9) { width: 8%; min-width: 80px; text-align: right; } /* ACCIONES */

.table-custom tbody tr {
  border-bottom: 1px solid var(--primary-100);
  transition: var(--transition-base);
}

.table-custom tbody tr:hover {
  background-color: var(--primary-50);
}

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

.table-custom tbody td {
  padding: 1rem 1.25rem;
  vertical-align: middle;
  font-size: 0.9375rem;
  color: var(--primary-700);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.table-custom tbody td.text-end {
  padding-right: 1.5rem;
  overflow: visible;
}

.table-custom tbody td .d-flex {
  gap: 0.5rem;
}

.table-custom tbody td strong {
  color: var(--primary-900);
  font-weight: 600;
}

/* ========================================
   Badges
   ======================================== */

.badge-custom {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.badge-custom i {
  font-size: 0.875rem;
}

.badge-primary-custom {
  background-color: var(--accent-primary-light);
  color: var(--accent-primary-hover);
}

.badge-success-custom {
  background-color: var(--accent-success-light);
  color: var(--accent-success-hover);
}

.badge-warning-custom {
  background-color: var(--accent-warning-light);
  color: var(--accent-warning-hover);
}

.badge-danger-custom {
  background-color: var(--accent-danger-light);
  color: var(--accent-danger-hover);
}

.badge-info-custom {
  background-color: var(--accent-info-light);
  color: var(--accent-info-hover);
}

.badge-neutral-custom {
  background-color: var(--primary-200);
  color: var(--primary-700);
}

/* ========================================
   Forms
   ======================================== */

.form-group-custom {
  margin-bottom: var(--spacing-lg);
}

.form-label-custom {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--primary-800);
  margin-bottom: var(--spacing-sm);
}

.form-input-custom,
.form-select-custom,
.form-textarea-custom {
  width: 100%;
  padding: 0.875rem 1.125rem;
  font-size: 0.9375rem;
  border: 2px solid var(--primary-200);
  border-radius: var(--radius-md);
  background: white;
  color: var(--primary-800);
  transition: var(--transition-base);
  font-family: var(--font-primary);
}

.form-input-custom:focus,
.form-select-custom:focus,
.form-textarea-custom:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

.form-textarea-custom {
  resize: vertical;
  min-height: 120px;
}

.form-help-custom {
  font-size: 0.875rem;
  color: var(--primary-500);
  margin-top: var(--spacing-xs);
}

/* ========================================
   Alerts
   ======================================== */

.alert-custom {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  border-left: 4px solid;
  display: flex;
  align-items: center; /* center items vertically for consistent alignment */
  gap: 1rem;
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.alert-custom i {
  font-size: 1.25rem;
  margin-top: 0; /* remove top offset so icon centers with the content */
}

.alert-custom-success {
  background-color: var(--accent-success-light);
  border-color: var(--accent-success);
  color: var(--accent-success-hover);
}

.alert-custom-warning {
  background-color: var(--accent-warning-light);
  border-color: var(--accent-warning);
  color: var(--accent-warning-hover);
}

.alert-custom-danger {
  background-color: var(--accent-danger-light);
  border-color: var(--accent-danger);
  color: var(--accent-danger-hover);
}

.alert-custom-info {
  background-color: var(--accent-info-light);
  border-color: var(--accent-info);
  color: var(--accent-info-hover);
}

/* Ensure alert close button renders correctly and doesn't break layout */
.alert-custom .btn-close {
  margin-left: auto; /* push to right in flex */
  width: 1.25rem;
  height: 1.25rem;
  padding: 0;
  border: none;
  background: transparent; /* fallback if bootstrap icon not available */
  color: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Fallback glyph if the Bootstrap close SVG/icon isn't applied */
.alert-custom .btn-close::before {
  content: "\00d7"; /* multiplication sign */
  font-size: 1.25rem;
  line-height: 1;
  display: inline-block;
}

/* ========================================
   Modals
   ======================================== */

.modal-custom .modal-content {
  border: none;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.modal-custom .modal-header {
  background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 100%);
  color: white;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 1.5rem;
  border-bottom: none;
}

.modal-custom .modal-title {
  font-weight: 700;
  font-size: 1.375rem;
}

.modal-custom .btn-close {
  filter: brightness(0) invert(1);
}

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

.modal-custom .modal-footer {
  border-top: 1px solid var(--primary-100);
  padding: var(--spacing-lg) var(--spacing-xl);
}

/* ========================================
   Tabs (Estado de propuestas)
   ======================================== */

.nav-tabs-custom {
  display: flex;
  gap: 1rem;
  border-bottom: 2px solid var(--primary-200);
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.nav-link-custom {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--primary-600);
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  margin-bottom: -0.85rem;
}

.nav-link-custom:hover {
  color: var(--primary-900);
}

.nav-link-custom.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

/* ========================================
   File name truncation
   ======================================== */

.file-name-truncate {
  display: inline-block;
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: middle;
}

@media (max-width: 768px) {
  .file-name-truncate {
    max-width: 220px;
  }
}

/* ========================================
   Propuesta - Vista Detalle
   ======================================== */

.propuesta-view-stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.propuesta-view-stack .card-custom {
  margin-bottom: 0;
  padding: var(--spacing-lg);
}

.propuesta-view-stack .card-body-custom {
  padding: 0;
}

.propuesta-view-stack .card-body-custom > *:not(:last-child) {
  margin-bottom: var(--spacing-md);
}

.propuesta-view-stack .table-custom {
  margin-bottom: 0;
}

.propuesta-view-stack .accordion {
  margin-top: var(--spacing-md);
}

/* Fix spacing jitter on accordion toggle (aprobadas) */
.propuesta-view-stack #cursosAccordion .accordion-item {
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
}

.propuesta-view-stack #cursosAccordion .accordion-button:focus {
  box-shadow: none;
}

.propuesta-view-stack #cursosAccordion .accordion-body {
  padding-bottom: 0.75rem;
}

/* ========================================
   Offcanvas (Notifications)
   ======================================== */

.offcanvas-custom {
  border-left: 3px solid var(--accent-primary);
}

.offcanvas-custom .offcanvas-header {
  background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 100%);
  color: white;
  padding: 1.5rem;
}

.offcanvas-custom .offcanvas-title {
  font-weight: 700;
  font-size: 1.25rem;
}

.offcanvas-custom .btn-close {
  filter: brightness(0) invert(1);
}

/* Oculta el botón de cierre cuando el offcanvas está cerrado para evitar que quede visible flotando */
.offcanvas:not(.show) .btn-close {
  display: none;
}

.offcanvas-custom .list-group-item {
  border: none;
  border-bottom: 1px solid var(--primary-100);
  padding: 1rem;
  transition: var(--transition-base);
}

.offcanvas-custom .list-group-item:hover {
  background-color: var(--primary-50);
}

/* ========================================
   Utilities
   ======================================== */

.text-gradient {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loading-spinner {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.fade-in {
  animation: fadeIn 0.4s ease-in;
}

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

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
  .container-custom {
    padding: var(--spacing-md);
  }
  
  .page-header {
    padding: var(--spacing-lg);
  }
  
  .card-custom {
    padding: var(--spacing-lg);
  }
  
  .stats-card {
    padding: var(--spacing-lg);
  }
  
  .stats-card .stats-value {
    font-size: 2rem;
  }
  
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
}

/* ========================================
   Custom Scrollbar
   ======================================== */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--primary-100);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-400);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-500);
}