/* ==========================================================================
   CNL — Header, menu, drawer, footer, tabbar, lưới bố cục
   ========================================================================== */

/* ------------------------------------------------------------------ HEADER */
.cnl-header {
	position: sticky;
	top: 0;
	z-index: var(--cnl-z-header);
	background: color-mix(in srgb, var(--cnl-card) 88%, transparent);
	backdrop-filter: saturate(180%) blur(14px);
	-webkit-backdrop-filter: saturate(180%) blur(14px);
	border-bottom: 1px solid var(--cnl-line);
	transition: box-shadow var(--cnl-t), background var(--cnl-t);
}
.cnl-header.is-stuck { box-shadow: var(--cnl-shadow-sm); }

.cnl-header__inner {
	display: flex;
	align-items: center;
	gap: var(--cnl-gap);
	min-height: var(--cnl-header-h);
}

/* Logo */
.cnl-brand {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	flex-shrink: 0;
	color: var(--cnl-ink);
}
.cnl-brand:hover { color: var(--cnl-ink); }
.cnl-brand__mark {
	display: grid;
	place-items: center;
	width: 42px; height: 42px;
	border-radius: 13px;
	background: linear-gradient(140deg, var(--cnl-primary), var(--cnl-primary-700));
	color: #fff;
	font-family: var(--cnl-font-hanzi);
	font-size: 22px;
	font-weight: 700;
	box-shadow: var(--cnl-shadow-red);
}
.cnl-brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.cnl-brand__text strong { font-size: var(--cnl-fs-md); font-weight: 800; letter-spacing: -.02em; }
.cnl-brand__text small { font-size: 11px; color: var(--cnl-muted); font-weight: 500; }

.custom-logo-link { display: inline-flex; }
.custom-logo { max-height: 46px; width: auto; }

/* Menu chính */
.cnl-nav { margin-inline: auto; }
.cnl-menu {
	display: flex;
	align-items: center;
	gap: 2px;
	margin: 0;
	padding: 0;
	list-style: none;
}
.cnl-menu__item { position: relative; margin: 0; }
.cnl-menu__link {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	padding: 9px 13px;
	border-radius: var(--cnl-r-pill);
	color: var(--cnl-ink-2);
	font-weight: 600;
	font-size: var(--cnl-fs-base);
	white-space: nowrap;
	transition: color var(--cnl-t), background var(--cnl-t);
}
.cnl-menu__link:hover { color: var(--cnl-primary); background: var(--cnl-primary-50); }

.cnl-menu .current-menu-item > .cnl-menu__link,
.cnl-menu .current_page_item > .cnl-menu__link,
.cnl-menu .current-menu-ancestor > .cnl-menu__link {
	color: var(--cnl-primary);
	background: var(--cnl-primary-50);
}

.cnl-menu__caret { transform: rotate(90deg); opacity: .55; }

/* Submenu */
.cnl-submenu {
	position: absolute;
	top: calc(100% + 10px);
	left: 0;
	min-width: 230px;
	margin: 0;
	padding: 8px;
	list-style: none;
	background: var(--cnl-card);
	border: 1px solid var(--cnl-line);
	border-radius: var(--cnl-r);
	box-shadow: var(--cnl-shadow-lg);
	opacity: 0;
	visibility: hidden;
	transform: translateY(-6px);
	transition: opacity var(--cnl-t), transform var(--cnl-t), visibility var(--cnl-t);
}
.cnl-menu__item--has-children:hover > .cnl-submenu,
.cnl-menu__item--has-children:focus-within > .cnl-submenu {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}
.cnl-submenu .cnl-menu__link {
	display: flex;
	width: 100%;
	border-radius: var(--cnl-r-sm);
}
.cnl-submenu .cnl-menu__caret { display: none; }

/* Hành động bên phải */
.cnl-header__actions {
	display: flex;
	align-items: center;
	gap: 8px;
	flex-shrink: 0;
	margin-left: auto;
}

.cnl-iconbtn {
	display: grid;
	place-items: center;
	width: 40px; height: 40px;
	border: 1px solid var(--cnl-line);
	border-radius: 12px;
	background: var(--cnl-card);
	color: var(--cnl-ink-2);
	transition: all var(--cnl-t);
}
.cnl-iconbtn:hover {
	color: var(--cnl-primary);
	border-color: var(--cnl-primary);
	background: var(--cnl-primary-50);
}
.cnl-iconbtn--badge { position: relative; }
.cnl-iconbtn--badge[data-count]::after {
	content: attr(data-count);
	position: absolute;
	top: -5px; right: -5px;
	min-width: 18px; height: 18px;
	padding: 0 5px;
	display: grid; place-items: center;
	background: var(--cnl-primary);
	color: #fff;
	font-size: 10px;
	font-weight: 700;
	border-radius: var(--cnl-r-pill);
	border: 2px solid var(--cnl-card);
}

.cnl-burger { display: none; }

/* Menu người dùng */
.cnl-usermenu { position: relative; }
.cnl-usermenu__toggle {
	display: inline-flex;
	align-items: center;
	gap: 9px;
	padding: 5px 11px 5px 5px;
	border: 1px solid var(--cnl-line);
	border-radius: var(--cnl-r-pill);
	background: var(--cnl-card);
	transition: border-color var(--cnl-t);
}
.cnl-usermenu__toggle:hover { border-color: var(--cnl-primary); }
.cnl-usermenu__toggle img,
.cnl-usermenu__toggle .cnl-avatar__fallback {
	width: 32px; height: 32px;
	border-radius: 50%;
}
.cnl-usermenu__name { font-size: var(--cnl-fs-sm); font-weight: 700; line-height: 1.2; }
.cnl-usermenu__meta { font-size: 11px; color: var(--cnl-muted); }
.cnl-usermenu__text { display: flex; flex-direction: column; text-align: left; }

.cnl-usermenu__panel {
	position: absolute;
	top: calc(100% + 10px);
	right: 0;
	min-width: 250px;
	padding: 8px;
	background: var(--cnl-card);
	border: 1px solid var(--cnl-line);
	border-radius: var(--cnl-r);
	box-shadow: var(--cnl-shadow-lg);
	list-style: none;
	margin: 0;
	display: none;
}
.cnl-usermenu.is-open .cnl-usermenu__panel { display: block; }
.cnl-usermenu__panel li { margin: 0; }
.cnl-usermenu__panel a {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 10px 12px;
	border-radius: var(--cnl-r-sm);
	color: var(--cnl-ink-2);
	font-weight: 600;
	font-size: var(--cnl-fs-base);
}
.cnl-usermenu__panel a:hover { background: var(--cnl-primary-50); color: var(--cnl-primary); }
.cnl-usermenu__panel hr { margin: 6px 8px; }

/* Ô tìm kiếm trên header */
.cnl-header__search { flex: 1; max-width: 340px; }

/* ------------------------------------------------------------------ DRAWER */
.cnl-drawer {
	position: fixed;
	inset: 0;
	z-index: var(--cnl-z-drawer);
	visibility: hidden;
}
.cnl-drawer.is-open { visibility: visible; }

.cnl-drawer__scrim {
	position: absolute;
	inset: 0;
	background: rgba(20, 23, 31, .5);
	opacity: 0;
	transition: opacity var(--cnl-t);
}
.cnl-drawer.is-open .cnl-drawer__scrim { opacity: 1; }

.cnl-drawer__panel {
	position: absolute;
	inset-block: 0;
	right: 0;
	width: min(360px, 88vw);
	padding: 20px;
	background: var(--cnl-card);
	overflow-y: auto;
	transform: translateX(100%);
	transition: transform var(--cnl-t-slow);
	display: flex;
	flex-direction: column;
	gap: var(--cnl-gap);
}
.cnl-drawer.is-open .cnl-drawer__panel { transform: translateX(0); }

.cnl-drawer__head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--cnl-gap-sm);
}
.cnl-drawer .cnl-menu {
	flex-direction: column;
	align-items: stretch;
	gap: 2px;
}
.cnl-drawer .cnl-menu__link {
	padding: 12px 14px;
	border-radius: var(--cnl-r-sm);
	font-size: var(--cnl-fs-md);
}
.cnl-drawer .cnl-submenu {
	position: static;
	opacity: 1;
	visibility: visible;
	transform: none;
	box-shadow: none;
	border: 0;
	border-left: 2px solid var(--cnl-line);
	border-radius: 0;
	margin-left: 14px;
	padding: 0 0 0 8px;
}

/* ------------------------------------------------------------------ FOOTER */
.cnl-footer {
	margin-top: var(--cnl-section);
	background: var(--cnl-ink);
	color: #C7CEDA;
	padding-block: var(--cnl-gap-xl) var(--cnl-gap-lg);
}
.cnl-footer a { color: #C7CEDA; }
.cnl-footer a:hover { color: #fff; }

.cnl-footer__grid {
	display: grid;
	grid-template-columns: 1.5fr repeat(3, 1fr);
	gap: var(--cnl-gap-lg);
	padding-bottom: var(--cnl-gap-lg);
	border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.cnl-footer__title {
	font-size: var(--cnl-fs-base);
	font-weight: 700;
	color: #fff;
	margin-bottom: 14px;
	letter-spacing: .01em;
}
.cnl-footer ul { list-style: none; padding: 0; margin: 0; }
.cnl-footer li { margin-bottom: 9px; font-size: var(--cnl-fs-base); }

.cnl-footer .cnl-brand__text strong { color: #fff; }
.cnl-footer .cnl-brand__text small { color: #8A93A3; }
.cnl-footer__about p { color: #98A2B3; margin-top: 14px; max-width: 34ch; }

.cnl-footer__social { display: flex; gap: 8px; margin-top: 18px; }
.cnl-footer__social a {
	display: grid;
	place-items: center;
	width: 38px; height: 38px;
	border-radius: 11px;
	background: rgba(255, 255, 255, .07);
	transition: background var(--cnl-t);
}
.cnl-footer__social a:hover { background: var(--cnl-primary); color: #fff; }

.cnl-footer__bottom {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: var(--cnl-gap-sm);
	padding-top: var(--cnl-gap);
	font-size: var(--cnl-fs-sm);
	color: #8A93A3;
}
.cnl-footer__bottom ul { display: flex; flex-wrap: wrap; gap: 18px; }
.cnl-footer__bottom li { margin: 0; }

/* ------------------------------------------------------------------ TABBAR */
.cnl-tabbar { display: none; }

/* ------------------------------------------------------------------ LƯỚI */
.cnl-grid { display: grid; gap: var(--cnl-gap); }
.cnl-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cnl-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cnl-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cnl-grid--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.cnl-grid--6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.cnl-grid--auto { grid-template-columns: repeat(auto-fill, minmax(258px, 1fr)); }
.cnl-grid--auto-sm { grid-template-columns: repeat(auto-fill, minmax(178px, 1fr)); }

/* Bố cục 2 cột: nội dung + cột phải (kiểu dashboard trong mockup) */
.cnl-split {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 336px;
	gap: var(--cnl-gap-lg);
	align-items: start;
}
.cnl-split--left { grid-template-columns: 288px minmax(0, 1fr); }
.cnl-split--wide-aside { grid-template-columns: minmax(0, 1fr) 400px; }

.cnl-aside { display: flex; flex-direction: column; gap: var(--cnl-gap); }
.cnl-aside--sticky { position: sticky; top: calc(var(--cnl-header-h) + 20px); }

/* Bố cục 3 cột kiểu trang từ vựng / hội thoại trong mockup */
.cnl-triple {
	display: grid;
	grid-template-columns: 252px minmax(0, 1fr) 320px;
	gap: var(--cnl-gap-lg);
	align-items: start;
}

/* ------------------------------------------------------------- RESPONSIVE */
@media (max-width: 1200px) {
	.cnl-triple { grid-template-columns: 224px minmax(0, 1fr); }
	.cnl-triple > :last-child { grid-column: 1 / -1; }
	.cnl-grid--6 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
	.cnl-grid--5 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 1080px) {
	.cnl-header__search { display: none; }
	.cnl-split,
	.cnl-split--left,
	.cnl-split--wide-aside { grid-template-columns: minmax(0, 1fr); }
	.cnl-aside--sticky { position: static; }
	.cnl-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
	.cnl-nav { display: none; }
	.cnl-burger { display: grid; }
	.cnl-triple { grid-template-columns: minmax(0, 1fr); }
	.cnl-triple > * { grid-column: auto; }
	.cnl-grid--4, .cnl-grid--5, .cnl-grid--6 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.cnl-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
	:root { --cnl-header-h: 62px; }

	.cnl-brand__text small { display: none; }
	.cnl-grid--2, .cnl-grid--3, .cnl-grid--4 { grid-template-columns: minmax(0, 1fr); }
	.cnl-grid--5, .cnl-grid--6 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.cnl-footer__grid { grid-template-columns: 1fr; gap: var(--cnl-gap); }
	.cnl-footer { margin-bottom: 66px; }

	/* Thanh điều hướng dưới cùng chỉ xuất hiện trên điện thoại */
	.cnl-tabbar {
		position: fixed;
		bottom: 0; left: 0; right: 0;
		z-index: var(--cnl-z-header);
		display: grid;
		grid-template-columns: repeat(5, 1fr);
		background: color-mix(in srgb, var(--cnl-card) 94%, transparent);
		backdrop-filter: blur(14px);
		-webkit-backdrop-filter: blur(14px);
		border-top: 1px solid var(--cnl-line);
		padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
	}
	.cnl-tabbar__item {
		display: flex;
		flex-direction: column;
		align-items: center;
		gap: 3px;
		padding: 6px 2px;
		border-radius: var(--cnl-r-sm);
		color: var(--cnl-muted);
		font-size: 10.5px;
		font-weight: 600;
	}
	.cnl-tabbar__item.is-active { color: var(--cnl-primary); }
	.cnl-tabbar__item.is-active svg { stroke-width: 2.2; }
}