/* ============================================
   AstionLiterário - Buttons Component
   Prefixo: lit-btn
   ============================================ */

.lit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--lit-font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    border: none;
    border-radius: var(--lit-radius-md);
    cursor: pointer;
    transition: all var(--lit-transition);
    white-space: nowrap;
}

.lit-btn:focus-visible {
    outline: 2px solid var(--lit-primary-light);
    outline-offset: 2px;
}

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

/* Variantes */
.lit-btn--primary {
    background: linear-gradient(135deg, var(--lit-primary) 0%, var(--lit-secondary) 100%);
    color: white;
    box-shadow: var(--lit-shadow-md), var(--lit-shadow-glow);
}

.lit-btn--primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--lit-shadow-lg), 0 0 30px rgba(99, 102, 241, 0.4);
}

.lit-btn--secondary {
    background-color: var(--lit-bg-card);
    color: var(--lit-text-primary);
    border: 1px solid var(--lit-border);
}

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

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

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

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

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

.lit-btn--accent {
    background-color: var(--lit-accent);
    color: #1a1a2e;
}

.lit-btn--accent:hover:not(:disabled) {
    background-color: var(--lit-accent-hover);
}

/* Tamanhos */
.lit-btn--sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.lit-btn--lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.lit-btn--xl {
    padding: 1.25rem 2.5rem;
    font-size: 1.2rem;
}

/* Full width */
.lit-btn--full {
    width: 100%;
}

/* Icon only */
.lit-btn--icon {
    padding: 0.75rem;
    border-radius: var(--lit-radius-full);
}

.lit-btn--icon.lit-btn--sm {
    padding: 0.5rem;
}

.lit-btn--icon.lit-btn--lg {
    padding: 1rem;
}

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

.lit-btn--loading::after {
    content: '';
    position: absolute;
    width: 1em;
    height: 1em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: lit-btn-spin 0.6s linear infinite;
}

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

/* Grupo de botões */
.lit-btn-group {
    display: flex;
    gap: 0.5rem;
}

.lit-btn-group--attached .lit-btn {
    border-radius: 0;
}

.lit-btn-group--attached .lit-btn:first-child {
    border-radius: var(--lit-radius-md) 0 0 var(--lit-radius-md);
}

.lit-btn-group--attached .lit-btn:last-child {
    border-radius: 0 var(--lit-radius-md) var(--lit-radius-md) 0;
}