/* ===== Traventia UI — Botões ===== */

.tv-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--tv-space-2);
	font-family: var(--tv-font);
	font-size: var(--tv-text-base);
	font-weight: var(--tv-font-semibold);
	line-height: 1;
	padding: 13px 24px;
	border-radius: var(--tv-radius-md);
	border: 1px solid transparent;
	cursor: pointer;
	text-decoration: none;
	transition: transform var(--tv-transition-fast), box-shadow var(--tv-transition-fast), background-color var(--tv-transition-fast), border-color var(--tv-transition-fast);
	white-space: nowrap;
}

.tv-btn:active:not(:disabled):not([aria-disabled="true"]) { transform: scale(0.98); }

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

.tv-btn-primary {
	background: var(--tv-primary);
	color: var(--tv-primary-contrast);
}

.tv-btn-primary:hover { background: var(--tv-primary-dark); box-shadow: var(--tv-shadow-md); transform: translateY(-1px); }

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

.tv-btn-secondary:hover { border-color: var(--tv-primary); color: var(--tv-primary-dark); transform: translateY(-1px); }

.tv-btn-ghost {
	background: transparent;
	color: var(--tv-primary);
	border-color: var(--tv-primary);
}

.tv-btn-ghost:hover { background: var(--tv-primary-light); color: var(--tv-primary-dark); }

.tv-btn-whatsapp {
	background: #25D366;
	color: #fff;
}

.tv-btn-whatsapp:hover { background: #1FB855; box-shadow: var(--tv-shadow-md); transform: translateY(-1px); }

.tv-btn-sm { padding: 8px 16px; font-size: var(--tv-text-sm); }
.tv-btn-lg { padding: 16px 32px; font-size: var(--tv-text-lg); }

.tv-btn-block { display: flex; width: 100%; }

.tv-btn:disabled,
.tv-btn[aria-disabled="true"] {
	opacity: 0.5;
	cursor: not-allowed;
	pointer-events: none;
	transform: none;
}

.tv-btn-icon {
	padding: 10px;
	border-radius: var(--tv-radius-full);
}

/* Estado de carregamento — acionado via JS marcando aria-busy="true" no
   botão (ex.: submit de formulário). O spinner entra como item de flex
   antes do texto, aproveitando o gap já existente em .tv-btn — não requer
   marcação extra nenhuma no HTML. */
.tv-btn[aria-busy="true"] {
	cursor: wait;
	pointer-events: none;
	opacity: 0.85;
}

.tv-btn[aria-busy="true"]::before {
	content: "";
	width: 16px;
	height: 16px;
	flex-shrink: 0;
	border-radius: 50%;
	border: 2px solid currentColor;
	border-top-color: transparent;
	animation: tv-btn-spin 0.6s linear infinite;
}

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

@media (prefers-reduced-motion: reduce) {
	.tv-btn[aria-busy="true"]::before { animation-duration: 1.4s; }
}