/* ==========================================================================
   Componentes de Interfaz: Botones, Tablas, Modales, Badges y Formularios
   ========================================================================== */

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1.25;
  white-space: nowrap;
}

.btn i {
  font-size: 1.15rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-500) 0%, #0284c7 100%);
  color: var(--white);
  box-shadow: 0 2px 4px rgba(0, 132, 214, 0.25);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #0284c7 0%, var(--primary-700) 100%);
  box-shadow: 0 4px 10px rgba(0, 132, 214, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--white);
  border-color: var(--slate-300);
  color: var(--slate-700);
}
.btn-secondary:hover {
  background: var(--slate-100);
  border-color: var(--slate-400);
  color: var(--slate-900);
}

.btn-success {
  background: var(--success-500);
  color: var(--white);
}
.btn-success:hover {
  background: var(--success-600);
}

.btn-danger {
  background: var(--danger-500);
  color: var(--white);
}
.btn-danger:hover {
  background: var(--danger-600);
}

.btn-warning {
  background: var(--warning-500);
  color: var(--white);
}
.btn-warning:hover {
  background: var(--warning-600);
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-icon {
  padding: 0.45rem;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Formularios */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: 0.4rem;
}

.form-label.required::after {
  content: ' *';
  color: var(--danger-500);
}

.form-control, .form-select {
  width: 100%;
  padding: 0.65rem 0.95rem;
  font-family: var(--font-family);
  font-size: 0.9rem;
  color: var(--slate-800);
  background-color: var(--white);
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(0, 132, 214, 0.15);
}

.form-control::placeholder {
  color: var(--slate-400);
}

.input-group {
  display: flex;
  align-items: stretch;
}

.input-prefix {
  display: flex;
  align-items: center;
  padding: 0 0.85rem;
  background: var(--slate-100);
  border: 1px solid var(--slate-300);
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  color: var(--slate-600);
  font-weight: 600;
}

.input-group .form-control {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

/* Tablas */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.table th {
  background: #f8fafc;
  padding: 0.875rem 1rem;
  font-weight: 700;
  color: var(--slate-700);
  border-bottom: 2px solid var(--slate-200);
  white-space: nowrap;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.table td {
  padding: 0.95rem 1rem;
  border-bottom: 1px solid var(--slate-200);
  color: var(--slate-800);
  vertical-align: middle;
}

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

.table tbody tr:hover {
  background-color: rgba(241, 245, 249, 0.7);
}

.table tbody tr.row-voided {
  background-color: #fff1f2;
  color: var(--slate-500);
}

.table tbody tr.row-voided td {
  border-bottom-color: #fecdd3;
}

.table tbody tr.row-voided .item-title {
  text-decoration: line-through;
  color: var(--danger-600);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-success {
  background: var(--success-50);
  color: var(--success-600);
  border: 1px solid var(--success-100);
}

.badge-danger {
  background: var(--danger-50);
  color: var(--danger-600);
  border: 1px solid var(--danger-100);
}

.badge-warning {
  background: var(--warning-50);
  color: var(--warning-600);
  border: 1px solid var(--warning-100);
}

.badge-primary {
  background: var(--primary-50);
  color: var(--primary-600);
  border: 1px solid var(--primary-100);
}

.badge-secondary {
  background: var(--slate-100);
  color: var(--slate-600);
  border: 1px solid var(--slate-200);
}

/* Alertas Flash */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.9rem;
  position: relative;
  box-shadow: var(--shadow-sm);
  animation: slideDown 0.3s ease;
}

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

.alert-success { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; }
.alert-error, .alert-danger { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.alert-warning { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.alert-info { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }

.alert-close {
  margin-left: auto;
  background: transparent;
  border: none;
  cursor: pointer;
  color: inherit;
  opacity: 0.6;
}
.alert-close:hover { opacity: 1; }

/* Modales */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(13, 35, 58, 0.65);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

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

.modal-container {
  background: var(--white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
  overflow: hidden;
}

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

.modal-header {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-body {
  padding: 1.75rem;
  overflow-y: auto;
}

.modal-footer {
  padding: 1.25rem 1.75rem;
  border-top: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  background: var(--slate-50);
}

/* Filtros Bar */
.filter-bar {
  background: var(--white);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
}

.filter-item {
  flex: 1;
  min-width: 160px;
}

/* Subida de Archivo Custom */
.file-upload-box {
  border: 2px dashed var(--slate-300);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  background: var(--slate-50);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.file-upload-box:hover, .file-upload-box.dragover {
  border-color: var(--primary-500);
  background: var(--primary-50);
}

.file-upload-icon {
  font-size: 2rem;
  color: var(--primary-500);
  margin-bottom: 0.5rem;
}

.file-upload-text {
  font-size: 0.85rem;
  color: var(--slate-600);
}

.file-preview {
  margin-top: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}