/* ========== VARIABLES CORPORATIVAS ========== */
:root {
  --corp-primary: #1e3a5f;
  --corp-primary-light: #2a4a7f;
  --corp-accent: #2b6cb0;
  --corp-accent-light: #3182ce;
  --corp-bg: #f7f8fc;
  --corp-card-bg: #ffffff;
  --corp-text: #1a202c;
  --corp-text-muted: #718096;
  --corp-border: #e2e8f0;
  --corp-success: #276749;
  --corp-danger: #c53030;
  --corp-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --corp-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
  --corp-radius: 8px;
  --corp-radius-lg: 12px;
  /* Colores dinámicos — se actualizan al seleccionar empresa */
  --corp-active-border: #1e3a5f;
  --corp-active-bg: #e8eef6;
  --corp-active-shadow: rgba(30, 58, 95, 0.15);
}

/* ========== ESTILOS GENERALES ========== */
* {
  box-sizing: border-box;
}

body {
  background-color: var(--corp-bg);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--corp-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* ========== HEADER CORPORATIVO ========== */
.corp-header {
  background: linear-gradient(135deg, var(--corp-primary) 0%, var(--corp-primary-light) 100%);
  color: #ffffff;
  border-bottom: 3px solid var(--corp-accent);
}

.corp-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

.corp-subtitle {
  font-size: 0.8rem;
  opacity: 0.75;
  margin: 0;
  font-weight: 300;
}

.corp-date {
  font-size: 0.85rem;
  opacity: 0.8;
  background: rgba(255, 255, 255, 0.1);
  padding: 6px 14px;
  border-radius: 20px;
}

/* ========== BREADCRUMB ========== */
.corp-breadcrumb {
  background: #ffffff;
  border-bottom: 1px solid var(--corp-border);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.corp-breadcrumb .breadcrumb {
  font-size: 0.82rem;
}

.corp-breadcrumb .breadcrumb-item {
  color: var(--corp-text-muted);
}

.corp-breadcrumb .breadcrumb-item.active {
  color: var(--corp-accent);
  font-weight: 500;
}

/* ========== CARDS CORPORATIVAS ========== */
.corp-card {
  background: var(--corp-card-bg);
  border-radius: var(--corp-radius-lg);
  box-shadow: var(--corp-shadow);
  border: 1px solid var(--corp-border);
  overflow: hidden;
}

.corp-card-header {
  background: linear-gradient(135deg, var(--corp-primary) 0%, var(--corp-primary-light) 100%);
  color: #ffffff;
  padding: 1.25rem 1.5rem;
}

.corp-card-header h4 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.corp-card-header small {
  font-size: 0.78rem;
}

.corp-card-icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--corp-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.corp-card-body {
  padding: 1.5rem;
}

/* ========== SECCIONES DEL FORMULARIO ========== */
.form-section {
  margin-bottom: 1.5rem;
}

.form-section-title {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--corp-accent);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #ebf4ff;
}

.form-section-title i {
  font-size: 1rem;
}

.form-section-content {
  padding-left: 0.25rem;
}

/* ========== TARJETAS DE EMPRESA ========== */
.empresa-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 0.5rem;
}

.empresa-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 1.1rem 0.75rem;
  border: 0.5px solid #d0d8e4;
  border-radius: var(--corp-radius-lg);
  background: #f7f9fc;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  user-select: none;
  position: relative;
}

.empresa-card:hover {
  border-color: #a0b4cc;
  background: #eef3fa;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.empresa-card.active {
  border: 2px solid var(--corp-active-border);
  background: var(--corp-active-bg);
  box-shadow: 0 4px 14px var(--corp-active-shadow);
}

.empresa-card.active .empresa-card-check {
  opacity: 1;
  transform: scale(1);
}

.empresa-card-check {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 20px;
  height: 20px;
  background: var(--corp-active-border);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.2s ease;
}

.empresa-card-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.5px;
  flex-shrink: 0;
  overflow: hidden;
}

.empresa-card-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.empresa-card-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--corp-text);
  line-height: 1.25;
}

.empresa-card-sub {
  font-size: 0.68rem;
  color: var(--corp-text-muted);
  margin-top: -4px;
}

.empresa-cards-error {
  margin-top: 6px;
}

@media (max-width: 575.98px) {
  .empresa-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 576px) and (max-width: 767.98px) {
  .empresa-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========== FORMULARIO ========== */
.form-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--corp-text);
  margin-bottom: 0.35rem;
}

.required {
  color: var(--corp-danger);
  font-weight: 700;
}

.form-control,
.form-select {
  border: 1.5px solid var(--corp-border);
  border-radius: var(--corp-radius);
  padding: 0.55rem 0.85rem;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  color: var(--corp-text);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--corp-accent);
  box-shadow: 0 0 0 3px var(--corp-active-shadow);
}

.form-control::placeholder {
  color: #a0aec0;
  font-size: 0.85rem;
}

.input-group-text {
  background: #f7fafc;
  border: 1.5px solid var(--corp-border);
  border-right: none;
  color: var(--corp-accent);
  font-size: 0.9rem;
}

.input-group .form-control,
.input-group .form-select {
  border-left: none;
}

.input-group .form-control:focus,
.input-group .form-select:focus {
  border-left: none;
}

.input-group:focus-within .input-group-text {
  border-color: var(--corp-accent);
  color: var(--corp-primary);
}

/* ========== ÁREA DE UPLOAD ========== */
.upload-area {
  border: 2px dashed var(--corp-border);
  border-radius: var(--corp-radius-lg);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background: #fafbfe;
  position: relative;
}

.upload-area:hover {
  border-color: var(--corp-accent);
  background: #f0f5ff;
}

.upload-area.drag-over {
  border-color: var(--corp-accent);
  background: #ebf4ff;
  transform: scale(1.01);
}

.upload-area.has-file {
  border-style: solid;
  border-color: var(--corp-accent);
  background: #f0f7ff;
  padding: 1rem 1.5rem;
}

.upload-placeholder i {
  font-size: 2.5rem;
  color: var(--corp-accent-light);
  display: block;
  margin-bottom: 0.5rem;
}

.upload-file-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--corp-radius);
  background: #ebf4ff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.upload-file-icon i {
  font-size: 1.4rem;
  color: var(--corp-accent);
}

/* ========== BOTONES CORPORATIVOS ========== */
.btn-corp-primary {
  background: linear-gradient(135deg, var(--corp-accent) 0%, var(--corp-primary) 100%);
  color: #ffffff;
  border: none;
  padding: 0.7rem 1.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--corp-radius);
  transition: all 0.2s ease;
  letter-spacing: 0.02em;
}

.btn-corp-primary:hover {
  background: linear-gradient(135deg, var(--corp-primary) 0%, var(--corp-primary-light) 100%);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(26, 54, 93, 0.3);
  transform: translateY(-1px);
}

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

.btn-corp-secondary {
  background: #ffffff;
  color: var(--corp-accent);
  border: 1.5px solid var(--corp-border);
  padding: 0.7rem 1.5rem;
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: var(--corp-radius);
  transition: all 0.2s ease;
}

.btn-corp-secondary:hover {
  background: #f7fafc;
  border-color: var(--corp-accent);
  color: var(--corp-primary);
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--corp-border);
  margin-top: 0.5rem;
}

.form-actions .btn-corp-primary {
  flex: 1;
}

.form-actions .btn-corp-secondary {
  flex: 0 0 auto;
}

/* ========== TABLA CORPORATIVA ========== */
.corp-table thead {
  background: #f7fafc;
}

.corp-table th {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--corp-text-muted);
  font-weight: 600;
  padding: 0.85rem 1rem;
  white-space: nowrap;
  border-bottom: 2px solid var(--corp-border);
}

.corp-table td {
  font-size: 0.88rem;
  padding: 0.85rem 1rem;
  vertical-align: middle;
  border-bottom: 1px solid #f1f5f9;
}

.corp-table tbody tr:hover {
  background-color: #f7fafc;
}

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

/* ========== BADGE DE ARCHIVO ========== */
.archivo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--corp-radius);
  font-size: 0.78rem;
  background-color: #ebf4ff;
  color: var(--corp-accent);
  cursor: pointer;
  transition: all 0.2s;
  max-width: 180px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
  border: 1px solid transparent;
}

.archivo-badge:hover {
  background-color: #dbeafe;
  border-color: var(--corp-accent-light);
}

/* ========== BOTONES DE ACCIÓN ========== */
.btn-action {
  width: 34px;
  height: 34px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--corp-radius);
  font-size: 0.85rem;
  transition: all 0.15s;
}

.btn-action:hover {
  transform: scale(1.05);
}

/* ========== ESTADO VACÍO ========== */
.empty-state i {
  font-size: 3.5rem;
  color: #cbd5e0;
  display: block;
  margin-bottom: 0.75rem;
}

.empty-state h5 {
  color: var(--corp-text-muted);
  font-weight: 600;
}

/* ========== TOAST ========== */
.toast {
  border-radius: var(--corp-radius);
  border: none;
  box-shadow: var(--corp-shadow-lg);
}

.toast.bg-success {
  background-color: #f0fff4 !important;
  color: var(--corp-success);
  border-left: 4px solid var(--corp-success);
}

.toast.bg-danger {
  background-color: #fff5f5 !important;
  color: var(--corp-danger);
  border-left: 4px solid var(--corp-danger);
}

/* ========== MODALES ========== */
.corp-modal {
  border: none;
  border-radius: var(--corp-radius-lg);
  box-shadow: var(--corp-shadow-lg);
}

.corp-modal .modal-header {
  border-bottom: 1px solid var(--corp-border);
  padding: 1rem 1.25rem;
}

.corp-modal .modal-footer {
  border-top: 1px solid var(--corp-border);
  padding: 0.85rem 1.25rem;
}

/* ========== VISOR DE ARCHIVOS ========== */
#viewerBody iframe,
#viewerBody img {
  width: 100%;
  height: 70vh;
  object-fit: contain;
  border: none;
}

#viewerBody img {
  height: auto;
  max-height: 70vh;
  padding: 1rem;
}

.viewer-unsupported {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  color: var(--corp-text-muted);
}

.viewer-unsupported i {
  font-size: 4rem;
  margin-bottom: 1rem;
  color: #cbd5e0;
}

/* ========== FOOTER ========== */
.corp-footer {
  background: var(--corp-primary);
  color: rgba(255, 255, 255, 0.6);
  padding: 1rem 0;
  margin-top: auto;
}

/* ========== ANIMACIONES ========== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.corp-table tbody tr {
  animation: fadeIn 0.25s ease;
}

.corp-card {
  animation: fadeIn 0.3s ease;
}

/* ========== ESTADO DE ENVÍO ========== */
.btn-sending {
  pointer-events: none;
  opacity: 0.75;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 767.98px) {
  .corp-title {
    font-size: 1rem;
  }

  .corp-card-body {
    padding: 1rem;
  }

  .form-actions {
    flex-direction: column;
  }

  .upload-area {
    padding: 1.25rem;
  }
}

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

.table tbody tr {
  animation: fadeIn 0.3s ease;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 991.98px) {
  .container-fluid {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

/* ========== ESTADO DE ENVÍO ========== */
.btn-sending {
  pointer-events: none;
  opacity: 0.7;
}