/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  line-height: 1;
  padding: 0.625rem 1rem;
  min-height: var(--touch-target-min);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled, .btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background-color: var(--color-primary-hover);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-text-inverse);
}
.btn-secondary:hover {
  background-color: var(--color-secondary-hover);
}

.btn-success {
  background-color: var(--color-success);
  color: var(--color-text-inverse);
}
.btn-success:hover {
  background-color: var(--color-success-hover);
}

.btn-danger {
  background-color: var(--color-danger);
  color: var(--color-text-inverse);
}
.btn-danger:hover {
  background-color: var(--color-danger-hover);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-border-dark);
  color: var(--color-text-main);
}
.btn-outline:hover {
  background-color: var(--color-surface-alt);
  border-color: var(--color-text-muted);
}

.btn-outline-primary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-primary:hover {
  background-color: var(--color-primary-light);
}

.btn-sm {
  padding: 0.375rem 0.625rem;
  font-size: var(--font-size-xs);
  min-height: 32px;
}

.btn-lg {
  padding: 0.75rem 1.25rem;
  font-size: var(--font-size-base);
  min-height: 48px;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-icon {
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  padding: 0;
  border-radius: var(--radius-md);
}

/* Form inputs & controls */
.form-group {
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-main);
  margin-bottom: var(--space-1);
}

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

.form-control, .form-select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-text-main);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-height: var(--touch-target-min);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
  outline: none;
}

.form-control:disabled, .form-select:disabled {
  background-color: var(--color-surface-alt);
  cursor: not-allowed;
  opacity: 0.7;
}

.form-control.is-invalid, .form-select.is-invalid {
  border-color: var(--color-danger);
}

.form-feedback-invalid {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: var(--space-1);
}

.form-feedback-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.form-row > .form-group {
  flex: 1 1 200px;
}

/* Input group */
.input-group {
  display: flex;
  position: relative;
  width: 100%;
}

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

.input-group-addon {
  display: flex;
  align-items: center;
  padding: 0 var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-left: none;
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.card-header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.card-body {
  padding: var(--space-4);
  flex: 1 1 auto;
}

.card-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.5rem;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-full);
  text-transform: capitalize;
  white-space: nowrap;
}

.badge-draft { background-color: #f1f5f9; color: #475569; border: 1px solid #cbd5e1; }
.badge-submitted { background-color: #e0f2fe; color: #0369a1; border: 1px solid #bae6fd; }
.badge-approved { background-color: #fef3c7; color: #b45309; border: 1px solid #fde68a; }
.badge-picking { background-color: #f3e8ff; color: #7e22ce; border: 1px solid #e9d5ff; }
.badge-dispatched { background-color: #ffedd5; color: #c2410c; border: 1px solid #fed7aa; }
.badge-delivered { background-color: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
.badge-cancelled, .badge-rejected { background-color: #fee2e2; color: #b91c1c; border: 1px solid #fecaca; }
.badge-returned { background-color: #fce7f3; color: #be185d; border: 1px solid #fbcfe8; }

.badge-success { background-color: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background-color: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background-color: var(--color-danger-bg); color: var(--color-danger); }
.badge-info { background-color: var(--color-info-bg); color: var(--color-info); }

/* Tables */
.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--font-size-sm);
}

.table th {
  background-color: var(--color-surface-alt);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-semibold);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-main);
  vertical-align: middle;
}

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

.table-hover tbody tr:hover {
  background-color: var(--color-surface-hover);
}

/* Modals & Dialogs */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(2px);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
  z-index: var(--z-modal);
}

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

.modal-header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  line-height: 1;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
}

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

.modal-body {
  padding: var(--space-4);
  overflow-y: auto;
}

.modal-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + var(--space-4));
  right: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: var(--z-toast);
  pointer-events: none;
  max-width: 360px;
  width: calc(100% - 2rem);
}

@media (min-width: 769px) {
  .toast-container {
    bottom: var(--space-4);
  }
}

.toast {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  pointer-events: auto;
  animation: toast-in var(--transition-normal) forwards;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.toast.toast-hiding {
  opacity: 0;
  transform: translateY(10px);
}

.toast-success {
  border-left: 4px solid var(--color-success);
}
.toast-error {
  border-left: 4px solid var(--color-danger);
}
.toast-warning {
  border-left: 4px solid var(--color-warning);
}
.toast-info {
  border-left: 4px solid var(--color-info);
}

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

/* Loading Spinners & Skeletons */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner-light {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
}

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

.skeleton-box {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Filter Pills & Status Tab Controls */
.filter-pills {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  align-items: center;
  flex-wrap: nowrap;
}

.filter-pill {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1.2;
}

.filter-pill:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.filter-pill.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-sm);
}