/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-500), var(--ai-500));
  color: var(--text-inverse);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 10px 24px rgba(29, 107, 255, 0.22);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(29, 107, 255, 0.28);
}

.btn-secondary {
  background-color: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--gray-50);
}

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

.btn-ghost:hover:not(:disabled) {
  background-color: var(--gray-50);
  color: var(--text-primary);
}

.btn-danger {
  background-color: var(--danger-500);
  color: var(--text-inverse);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--danger-600);
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  background-color: var(--gray-50);
  color: var(--text-primary);
}

/* Forms */
.form-group {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--text-primary);
  background-color: var(--surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--brand-300);
  box-shadow: 0 0 0 4px var(--brand-50);
}

.form-input::placeholder, .form-textarea::placeholder {
  color: var(--text-placeholder);
}

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

.form-help {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Cards */
.card {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 24px;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-success { background-color: var(--brand-50); color: var(--brand-700); }
.badge-warning { background-color: var(--warning-50); color: var(--warning-500); }
.badge-danger { background-color: var(--danger-50); color: var(--danger-500); }
.badge-info { background-color: var(--info-50); color: var(--info-500); }
.badge-ai { background-color: var(--ai-50); color: var(--ai-700); }
.badge-gray { background-color: var(--gray-100); color: var(--gray-700); }

/* Utility */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.w-full { width: 100%; }

/* Tabelas Responsivas */
.table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
}

.table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.table th, .table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.table th {
  background-color: var(--gray-50);
  font-weight: 600;
  color: var(--text-secondary);
}

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

/* Empty States */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  background-color: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  color: var(--gray-400);
  background: var(--gray-50);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.empty-state-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.empty-state-desc {
  font-size: 0.875rem;
  max-width: 400px;
  margin-bottom: 24px;
}