/**
 * @file buttons.css
 * @description Estilos para todos os tipos de botões do sistema.
 */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    line-height: 1.5;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Tamanhos */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
}

/* Variantes */
.btn-primary {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.btn-success {
    background: var(--success-color);
    color: var(--text-white);
    border-color: var(--success-color);
}

.btn-success:hover:not(:disabled) {
    background: var(--success-hover);
}

.btn-danger {
    background: var(--danger-color);
    color: var(--text-white);
    border-color: var(--danger-color);
}

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

.btn-warning {
    background: var(--warning-color);
    color: var(--text-white);
    border-color: var(--warning-color);
}

.btn-warning:hover:not(:disabled) {
    background: var(--warning-hover);
}

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

.btn-ghost:hover:not(:disabled) {
    background: var(--gray-100);
    color: var(--text-primary);
}

.btn-link {
    background: transparent;
    color: var(--primary-color);
    border: none;
    padding: 0;
}

.btn-link:hover:not(:disabled) {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Botão ícone (sem texto) */
.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
}

.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
}

/* Botão com loading */
.btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.loading::after {
    content: '';
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: var(--spacing-sm);
}

/* Grupo de botões */
.btn-group {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-group .btn:not(:last-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.btn-group .btn:not(:first-child) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    margin-left: -1px;
}