/* ===========================================
   BUTTONS - Componentes de botão MACAM BRASIL
   Estilo minimalista, preto e cinza
   =========================================== */

.ml-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--ml-space-sm);
    padding: var(--ml-space-sm) var(--ml-space-lg);
    border: none;
    border-radius: var(--ml-radius-md);
    font-family: var(--ml-font-display);
    font-size: var(--ml-text-sm);
    font-weight: var(--ml-font-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--ml-transition-base);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

/* Tamanhos responsivos */
@media (min-width: 640px) {
    .ml-btn {
        padding: var(--ml-space-md) var(--ml-space-xl);
        font-size: var(--ml-text-base);
    }
}

/* ========================================
   BOTÃO PRIMÁRIO - Preto sólido MACAM
   ======================================== */

.ml-btn--primary {
    background-color: var(--ml-primary);
    color: var(--ml-white);
    box-shadow: var(--ml-shadow-sm);
}

.ml-btn--primary:hover {
    background-color: var(--ml-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--ml-shadow-hover);
}

.ml-btn--primary:active {
    transform: translateY(0);
    box-shadow: var(--ml-shadow-sm);
}

/* Shimmer sutil no hover */
.ml-btn--primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        120deg,
        transparent 30%,
        rgba(255, 255, 255, 0.15) 50%,
        transparent 70%
    );
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.ml-btn--primary:hover::before {
    transform: translateX(100%);
}

/* ========================================
   BOTÃO SECUNDÁRIO - Cinza MACAM
   ======================================== */

.ml-btn--secondary {
    background-color: var(--ml-gray-400);
    color: var(--ml-white);
}

.ml-btn--secondary:hover {
    background-color: var(--ml-gray-500);
    transform: translateY(-2px);
}

.ml-btn--secondary:active {
    transform: translateY(0);
}

/* ========================================
   BOTÃO OUTLINE - Bordas elegantes
   ======================================== */

.ml-btn--outline {
    background: transparent;
    color: var(--ml-primary);
    border: 2px solid var(--ml-primary);
}

.ml-btn--outline:hover {
    background-color: var(--ml-primary);
    color: var(--ml-white);
}

/* ========================================
   BOTÃO GHOST - Mínimo visual
   ======================================== */

.ml-btn--ghost {
    background: transparent;
    color: var(--ml-gray-400);
    border: 1px solid var(--ml-gray-200);
}

.ml-btn--ghost:hover {
    color: var(--ml-primary);
    border-color: var(--ml-primary);
    background-color: var(--ml-gray-100);
}

/* ========================================
   BOTÃO DANGER - Ações destrutivas
   ======================================== */

.ml-btn--danger {
    background-color: var(--ml-error);
    color: var(--ml-white);
}

.ml-btn--danger:hover {
    background-color: #a12121;
    transform: translateY(-2px);
}

/* ========================================
   TAMANHOS
   ======================================== */

.ml-btn--sm {
    padding: var(--ml-space-xs) var(--ml-space-md);
    font-size: var(--ml-text-xs);
}

.ml-btn--lg {
    padding: var(--ml-space-md) var(--ml-space-2xl);
    font-size: var(--ml-text-lg);
}

.ml-btn--full {
    width: 100%;
}

/* ========================================
   ESTADOS
   ======================================== */

.ml-btn:disabled,
.ml-btn--disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Loading state */
.ml-btn--loading {
    pointer-events: none;
    position: relative;
}

.ml-btn--loading .ml-btn__text,
.ml-btn--loading .ml-btn__icon {
    opacity: 0;
}

.ml-btn__loader {
    display: none;
    position: absolute;
    inset: 0;
    margin: auto;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: ml-spin 0.8s linear infinite;
}

.ml-btn--loading .ml-btn__loader {
    display: block;
}

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

/* ========================================
   ÍCONES
   ======================================== */

.ml-btn__icon {
    font-size: 1.1em;
    transition: transform var(--ml-transition-fast);
}

.ml-btn:hover .ml-btn__icon {
    transform: translateX(3px);
}

.ml-btn--icon-left .ml-btn__icon {
    order: -1;
}

.ml-btn--icon-left:hover .ml-btn__icon {
    transform: translateX(-3px);
}

/* Botão somente ícone */
.ml-btn--icon-only {
    padding: var(--ml-space-sm);
    aspect-ratio: 1;
}

.ml-btn--icon-only:hover .ml-btn__icon {
    transform: scale(1.1);
}