/* =========================================================
   Cabeçalho
   Mobile: barra + gaveta que desce. Desktop (>=900px): tudo
   em linha. Não é a navegação de desktop espremida.
   ========================================================= */

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: var(--gray-950);
	color: var(--white);
}

.site-header-inner {
	position: relative;
	display: flex;
	align-items: center;
	gap: var(--space-4);
	width: 100%;
	max-width: var(--wrap);
	min-height: var(--header-h);
	margin-inline: auto;
	padding-inline: var(--gutter);
}

.logo-wrapper {
	display: flex;
	align-items: center;
	flex-shrink: 0;
	/* aumenta o alvo de toque sem aumentar a logo */
	padding-block: var(--space-2);
	margin-inline-start: calc(var(--space-2) * -1);
	padding-inline: var(--space-2);
	border-radius: var(--radius-sm);
}

.logo-img {
	width: auto;
	height: 26px;
}

/* ---------- Botão de menu (só mobile) ---------- */

.navigation-menu-toggle {
	display: flex;
	align-items: center;
	justify-content: center;
	width: var(--tap);
	height: var(--tap);
	margin-inline-start: auto;
	margin-inline-end: calc(var(--space-2) * -1);
	border-radius: var(--radius-sm);
	color: var(--white);
	background: transparent;
	transition: background var(--dur-fast) var(--ease);
}

.navigation-menu-toggle:hover {
	background: rgba(255, 255, 255, .1);
}

/* três barras que viram um X — sem trocar texto via JS */
.menu-bars,
.menu-bars::before,
.menu-bars::after {
	display: block;
	width: 18px;
	height: 2px;
	border-radius: 2px;
	background: currentColor;
	transition: transform var(--dur) var(--ease), opacity var(--dur-fast) var(--ease);
}

.menu-bars {
	position: relative;
}

.menu-bars::before,
.menu-bars::after {
	content: "";
	position: absolute;
	left: 0;
}

.menu-bars::before {
	top: -6px;
}

.menu-bars::after {
	top: 6px;
}

.navigation-menu-toggle[aria-expanded="true"] .menu-bars {
	background: transparent;
}

.navigation-menu-toggle[aria-expanded="true"] .menu-bars::before {
	transform: translateY(6px) rotate(45deg);
}

.navigation-menu-toggle[aria-expanded="true"] .menu-bars::after {
	transform: translateY(-6px) rotate(-45deg);
}

/* ---------- Gaveta (mobile) ---------- */

/* Fixa, não absoluta: presa ao viewport logo abaixo do cabeçalho.
   Sendo absoluta dentro do header sticky, ela dependia do sticky continuar
   funcionando — e bastava qualquer coisa transformar um ancestral em
   contêiner de rolagem para a gaveta sumir da tela ao rolar. */
.navigation-menu {
	position: fixed;
	top: var(--header-h);
	left: 0;
	right: 0;
	z-index: 2;
	display: flex;
	flex-direction: column;
	gap: var(--space-5);
	padding: var(--space-5) var(--gutter) var(--space-6);
	background: var(--surface);
	color: var(--text);
	border-bottom: 1px solid var(--border);
	box-shadow: var(--shadow-md);
	max-height: calc(100dvh - var(--header-h));
	overflow-y: auto;
	overscroll-behavior: contain;
	transform: translateY(-8px);
	opacity: 0;
	visibility: hidden;
	transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), visibility var(--dur);
}

.navigation-menu.open {
	transform: translateY(0);
	opacity: 1;
	visibility: visible;
}

.nav-backdrop {
	position: fixed;
	inset: var(--header-h) 0 0;
	z-index: 1;
	background: rgba(11, 11, 13, .4);
	animation: nav-backdrop-in var(--dur) var(--ease);
}

@keyframes nav-backdrop-in {
	from {
		opacity: 0;
	}
}

/* Trava o fundo enquanto a gaveta está aberta (só no mobile, onde ela existe).
   Precisa ser no <html>: como html já tem overflow-x:hidden, é ele que
   define a rolagem do viewport, e um overflow:hidden no <body> era ignorado
   para travar — só servia para quebrar o position:sticky do cabeçalho. */
@media (max-width: 899px) {
	html.nav-open {
		overflow: hidden;
	}
}

.nav-section-title {
	font-size: var(--fs-xs);
	font-weight: 600;
	letter-spacing: .08em;
	text-transform: uppercase;
	color: var(--text-faint);
	margin-bottom: var(--space-1);
}

.nav-list {
	display: flex;
	flex-direction: column;
}

.nav-link {
	display: block;
	padding: var(--space-3) 0;
	font-size: var(--fs-md);
	font-weight: 500;
	color: var(--text);
	border-bottom: 1px solid var(--border);
	transition: color var(--dur-fast) var(--ease);
}

.nav-link:hover {
	color: var(--accent-ink);
}

.nav-link[aria-current="page"] {
	color: var(--accent-ink);
	font-weight: 600;
}

.logout-form {
	display: contents;
}

.navigation-menu .btn-on-dark {
	color: var(--text);
	border-color: var(--border-strong);
}

.navigation-menu .btn-on-dark:hover:not(:disabled) {
	background: var(--surface-sunken);
	border-color: var(--border-strong);
}

.nav-account {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-4);
	padding-top: var(--space-5);
	border-top: 1px solid var(--border);
}

.profile-link {
	display: flex;
	align-items: center;
	gap: var(--space-3);
	min-width: 0;
	padding: var(--space-1);
	border-radius: var(--radius-sm);
}

.profile-image {
	width: 36px;
	height: 36px;
	border-radius: 50%;
	object-fit: cover;
	background: var(--surface-sunken);
	flex-shrink: 0;
}

.username {
	font-weight: 600;
	font-size: var(--fs-sm);
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.auth-container {
	display: flex;
	gap: var(--space-3);
	padding-top: var(--space-5);
	border-top: 1px solid var(--border);
}

/* substitui os floats de 49% que faziam o contêiner colapsar */
.auth-container .btn {
	flex: 1 1 0;
}

/* ---------- Desktop ---------- */

@media (min-width: 900px) {
	.navigation-menu-toggle,
	.nav-backdrop {
		display: none;
	}

	.navigation-menu {
		position: static;
		flex-direction: row;
		align-items: center;
		gap: var(--space-6);
		flex: 1;
		padding: 0;
		max-height: none;
		overflow: visible;
		background: transparent;
		color: inherit;
		border: none;
		box-shadow: none;
		transform: none;
		opacity: 1;
		visibility: visible;
	}

	.nav-section-title {
		display: none;
	}

	.nav-list {
		flex-direction: row;
		gap: var(--space-5);
	}

	.nav-section-admin {
		padding-left: var(--space-6);
		border-left: 1px solid rgba(255, 255, 255, .15);
	}

	.nav-link {
		padding: var(--space-2) 0;
		font-size: var(--fs-sm);
		color: rgba(255, 255, 255, .75);
		border-bottom: 2px solid transparent;
	}

	.nav-link:hover {
		color: var(--white);
	}

	.nav-link[aria-current="page"] {
		color: var(--white);
		border-bottom-color: var(--accent);
	}

	.nav-account,
	.auth-container {
		margin-left: auto;
		padding-top: 0;
		border-top: none;
		flex-shrink: 0;
	}

	.nav-account {
		gap: var(--space-3);
	}

	.navigation-menu .btn-on-dark {
		color: var(--white);
		border-color: rgba(255, 255, 255, .3);
	}

	.navigation-menu .btn-on-dark:hover:not(:disabled) {
		background: rgba(255, 255, 255, .1);
		border-color: rgba(255, 255, 255, .6);
	}

	.profile-link {
		color: rgba(255, 255, 255, .85);
	}

	.profile-link:hover,
	.profile-link[aria-current="page"] {
		color: var(--white);
	}

	.profile-image {
		width: 30px;
		height: 30px;
	}

	.username {
		max-width: 14ch;
	}

	.auth-container .btn {
		flex: 0 0 auto;
	}
}