/* ============================================
   WbaChat - Reusable Components
   ============================================ */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
  user-select: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 6px 18px rgba(37, 211, 102, 0.25);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(37, 211, 102, 0.35);
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text-primary);
}
.btn-secondary:hover {
  border-color: var(--brand-primary);
  color: var(--brand-secondary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background: var(--bg-muted);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: #dc2626; color: #fff; }

.btn-block { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-lg { padding: 14px 26px; font-size: 16px; }

.btn:disabled { opacity: .55; cursor: not-allowed; transform: none !important; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.card:hover { box-shadow: var(--shadow-md); }

.card-glass {
  background: var(--surface-glass);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--surface-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 var(--space-2);
  color: var(--text-primary);
}

/* Forms */
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.form-control:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.18);
}
.form-control::placeholder { color: var(--text-tertiary); }

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

.form-help {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-success { background: rgba(22, 163, 74, .14); color: var(--success); }
.badge-warning { background: rgba(245, 158, 11, .14); color: var(--warning); }
.badge-danger  { background: rgba(239, 68, 68, .14);  color: var(--danger); }
.badge-info    { background: rgba(59, 130, 246, .14); color: var(--info); }
.badge-muted   { background: var(--bg-muted); color: var(--text-secondary); }

/* Alerts */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: var(--space-4);
  border: 1px solid;
}
.alert-error   { background: rgba(239,68,68,.08);  border-color: rgba(239,68,68,.3);  color: var(--danger); }
.alert-success { background: rgba(22,163,74,.08);  border-color: rgba(22,163,74,.3);  color: var(--success); }
.alert-info    { background: rgba(59,130,246,.08); border-color: rgba(59,130,246,.3); color: var(--info); }

/* Loader / Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .8s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  color: var(--text-secondary);
}
.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: var(--space-3);
  opacity: .6;
}

/* Toast */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}
.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  font-size: 14px;
  pointer-events: auto;
  animation: toastIn .3s var(--ease);
  border-left: 4px solid var(--brand-primary);
}
.toast.toast-error { border-left-color: var(--danger); }
.toast.toast-success { border-left-color: var(--success); }
.toast.toast-warning { border-left-color: var(--warning); }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
  animation: fadeIn .2s var(--ease);
}
.modal {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow-xl);
  max-height: 90vh;
  overflow-y: auto;
  animation: scaleIn .25s var(--ease);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes scaleIn {
  from { opacity: 0; transform: translateY(8px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Table */
.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}
.table th, .table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.table th {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: .04em;
  background: var(--bg-muted);
}
.table tbody tr:hover { background: var(--bg-muted); }
.table tbody tr:last-child td { border-bottom: none; }

/* Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--border-strong);
  border-radius: 999px;
  transition: var(--dur) var(--ease);
}
.switch .slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: var(--dur) var(--ease);
}
.switch input:checked + .slider { background: var(--brand-primary); }
.switch input:checked + .slider::before { transform: translateX(18px); }

/* Skeleton */
.skeleton {
  background: linear-gradient(90deg, var(--bg-muted) 25%, var(--border) 50%, var(--bg-muted) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}