/* ==========================================================================
   BARCADE theme — visual implementation of frozen VIS-01 / VIS-02
   Tokens mirror theme.json (MASTER SPEC V2 §19 / TECH_ARCH §19).
   ========================================================================== */

:root {
	--bc-bg: #F5F5F2;
	--bc-surface: #FFFFFF;
	--bc-text: #161616;
	--bc-text-2: #747474;
	--bc-border: #DADAD6;
	--bc-primary: #2358A5;
	--bc-accent: #E87822;

	/* category badge colors */
	--bc-cat-event: #E87822;
	--bc-cat-visit: #1F9E9E;
	--bc-cat-collection: #2358A5;
	--bc-cat-preservation: #1E9E5F;
	--bc-cat-leaderboard: #C08A1F;
	--bc-cat-culture: #E85D75;
	--bc-cat-original: #7C5CD6;
	--bc-cat-external: #4A7196;

	--bc-radius: 12px;
	--bc-radius-sm: 8px;
	--bc-shadow: 0 1px 2px rgba(22, 22, 22, .04), 0 4px 16px rgba(22, 22, 22, .05);
	--bc-container: 1240px;
	--bc-header-h: 64px;
	--bc-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
		"Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }
html, body { overflow-x: clip; }

body {
	margin: 0;
	background: var(--bc-bg);
	color: var(--bc-text);
	font-family: var(--bc-font);
	font-size: 16px;
	line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible {
	outline: 2px solid var(--bc-primary);
	outline-offset: 2px;
}

.bc-icon { width: 1.1em; height: 1.1em; flex: none; }

/* ==========================================================================
   Header — sticky, single compact layer (SPEC §6)
   ========================================================================== */

.bc-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: var(--bc-surface);
	border-bottom: 1px solid var(--bc-border);
}

.bc-header__inner {
	max-width: var(--bc-container);
	height: var(--bc-header-h);
	margin: 0 auto;
	padding: 0 24px;
	display: flex;
	align-items: center;
	gap: 24px;
}

.bc-brand {
	display: flex;
	align-items: center;
	gap: 10px;
	flex: none;
}

.bc-brand__logo { height: 26px; width: auto; }
.bc-brand__cn { font-size: 15px; font-weight: 500; letter-spacing: .02em; }

.bc-nav { flex: 1 0 auto; min-width: 0; }
.bc-nav__list {
	display: flex;
	align-items: center;
	gap: 4px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.bc-nav__link {
	display: block;
	position: relative;
	padding: 8px 10px;
	font-size: 14.5px;
	color: var(--bc-text);
	white-space: nowrap;
}
.bc-nav__link::after {
	content: "";
	position: absolute;
	left: 12px;
	right: 12px;
	bottom: 2px;
	height: 2.5px;
	border-radius: 2px;
	background: transparent;
	transition: background .15s ease;
}
.bc-nav__link:hover { color: var(--bc-primary); }
.bc-nav__link.is-active { color: var(--bc-primary); font-weight: 600; }
.bc-nav__link.is-active::after { background: var(--bc-primary); }

/* dropdown (游戏保护 ▾) */
.bc-nav__item--has-sub { position: relative; }
.bc-nav__sub {
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 160px;
	margin: 4px 0 0;
	padding: 6px;
	list-style: none;
	background: var(--bc-surface);
	border: 1px solid var(--bc-border);
	border-radius: var(--bc-radius-sm);
	box-shadow: var(--bc-shadow);
	opacity: 0;
	visibility: hidden;
	transform: translateY(-4px);
	transition: opacity .15s ease, transform .15s ease, visibility .15s;
}
.bc-nav__item--has-sub:hover .bc-nav__sub,
.bc-nav__item--has-sub:focus-within .bc-nav__sub {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}
.bc-nav__sub a {
	display: block;
	padding: 8px 12px;
	font-size: 14px;
	border-radius: 6px;
	white-space: nowrap;
}
.bc-nav__sub a:hover { background: var(--bc-bg); color: var(--bc-primary); }

.bc-header__tools {
	display: flex;
	align-items: center;
	gap: 12px;
	flex: 0 1 auto;
	min-width: 0;
}

.bc-search {
	display: flex;
	align-items: center;
	gap: 8px;
	flex: 0 1 auto;
	min-width: 44px;
	width: clamp(160px, 18vw, 320px);
	padding: 0 14px;
	height: 38px;
	background: var(--bc-bg);
	border: 1px solid transparent;
	border-radius: 999px;
	color: var(--bc-text-2);
	transition: border-color .15s ease, background .15s ease;
}
.bc-search:focus-within { background: var(--bc-surface); border-color: var(--bc-primary); }
.bc-search input {
	flex: 1;
	min-width: 0;
	border: 0;
	background: none;
	font: inherit;
	font-size: 14px;
	color: var(--bc-text);
}
.bc-search input:focus { outline: none; }
.bc-search input::placeholder { color: var(--bc-text-2); }

.bc-iconbtn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 38px;
	height: 38px;
	padding: 0;
	border: 1px solid var(--bc-border);
	border-radius: 50%;
	background: var(--bc-surface);
	color: var(--bc-text);
	cursor: pointer;
	flex: none;
}
.bc-iconbtn:hover { color: var(--bc-primary); border-color: var(--bc-primary); }
.bc-iconbtn .bc-icon { width: 18px; height: 18px; }

.bc-menu-toggle, .bc-search-btn { display: none; }
.bc-mobile-nav { display: none; }

/* ==========================================================================
   Hero (VIS-01)
   ========================================================================== */

.bc-hero {
	position: relative;
	overflow: hidden;
	background: linear-gradient(100deg, #F3F2EE 0%, #ECEAE3 52%, #DEDACE 100%);
}

.bc-hero__bg {
	position: absolute;
	inset: 0;
	background-image:
		linear-gradient(90deg, rgba(243,242,238,.96) 0%, rgba(236,234,227,.78) 46%, rgba(222,218,206,.30) 100%),
		url("../img/fixtures/hero-hall.svg");
	background-size: cover;
	background-position: center right;
}

.bc-hero__inner {
	position: relative;
	max-width: var(--bc-container);
	margin: 0 auto;
	padding: 56px 24px;
	display: grid;
	grid-template-columns: 56px minmax(0, 1fr) auto 150px;
	align-items: center;
	gap: 32px;
}

.bc-hero__micro {
	margin: 0;
	font-size: 10px;
	font-weight: 600;
	letter-spacing: .28em;
	line-height: 1.9;
	color: var(--bc-text-2);
}

.bc-hero__title {
	margin: 0 0 14px;
	font-size: 42px;
	font-weight: 700;
	line-height: 1.3;
	letter-spacing: .01em;
}

.bc-hero__sub {
	margin: 0;
	font-size: 17px;
	color: var(--bc-text-2);
	letter-spacing: .06em;
}

.bc-hero__art {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 10px;
	color: var(--bc-text-2);
}
.bc-hero__invader { width: 44px; height: auto; opacity: .75; }
.bc-hero__art-caption {
	margin: 0;
	font-size: 10px;
	letter-spacing: .18em;
	line-height: 1.7;
	text-align: center;
}

.bc-hero__side {
	margin: 0;
	font-size: 15px;
	line-height: 2;
	color: var(--bc-text);
	text-align: left;
	border-bottom: 1px solid var(--bc-text);
	padding-bottom: 12px;
	align-self: center;
}

/* ==========================================================================
   Home layout — left 聚焦 / right 正在发生 (SPEC §9)
   ========================================================================== */

.bc-home {
	max-width: var(--bc-container);
	margin: 0 auto;
	padding: 40px 24px 72px;
	display: grid;
	grid-template-columns: 288px minmax(0, 1fr);
	gap: 48px;
	align-items: start;
}

.bc-section-head {
	display: flex;
	align-items: flex-end;
	justify-content: space-between;
	gap: 16px;
	margin-bottom: 22px;
}

.bc-section-head--updates { flex-wrap: wrap; }

.bc-section-title {
	margin: 0 0 4px;
	font-size: 24px;
	font-weight: 700;
	line-height: 1.35;
}

.bc-section-sub {
	margin: 0;
	font-size: 13px;
	color: var(--bc-text-2);
}

.bc-section-more {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	font-size: 13px;
	color: var(--bc-primary);
	white-space: nowrap;
}
.bc-section-more:hover { text-decoration: underline; }

/* ---- shared empty state (production-safe, no fake content) ---- */

.bc-empty { padding: 48px 24px; text-align: center; color: var(--bc-text-2); }
.bc-empty__title { font-size: 17px; font-weight: 600; color: var(--bc-text); margin: 0 0 8px; }
.bc-empty__hint { font-size: 13.5px; margin: 0; }

/* ---- focus cards (left column) ---- */

.bc-focus__scroller {
	display: flex;
	flex-direction: column;
	gap: 26px;
}

.bc-focus-card { display: block; }
.bc-focus-card__title {
	margin: 10px 0 4px;
	font-size: 15px;
	font-weight: 600;
	line-height: 1.45;
}
.bc-focus-card__meta {
	margin: 0;
	font-size: 12.5px;
	color: var(--bc-text-2);
}
.bc-focus-card:hover .bc-focus-card__title { color: var(--bc-primary); }

.bc-focus__dots { display: none; }

/* ---- shared 4:3 media (Universal Content Card, SPEC §8) ---- */

.bc-card-media {
	position: relative;
	margin: 0;
	border-radius: 10px;
	overflow: hidden;
	background: #E8E7E1;
}
.bc-card-media img {
	width: 100%;
	aspect-ratio: 4 / 3;
	object-fit: cover;
	transition: transform .3s ease;
}
.bc-card:hover .bc-card-media img,
.bc-focus-card:hover .bc-card-media img { transform: scale(1.03); }

/* ---- category badge ---- */

.bc-badge {
	position: absolute;
	top: 10px;
	left: 10px;
	padding: 3px 10px;
	border-radius: 6px;
	font-size: 12px;
	font-weight: 500;
	line-height: 1.5;
	color: #fff;
	background: var(--bc-primary);
}
.bc-badge--event        { background: var(--bc-cat-event); }
.bc-badge--visit        { background: var(--bc-cat-visit); }
.bc-badge--collection   { background: var(--bc-cat-collection); }
.bc-badge--preservation { background: var(--bc-cat-preservation); }
.bc-badge--leaderboard  { background: var(--bc-cat-leaderboard); }
.bc-badge--culture      { background: var(--bc-cat-culture); }
.bc-badge--original     { background: var(--bc-cat-original); }
.bc-badge--wish         { background: #B06AC9; }
.bc-badge--barcade      { background: #161616; }
.bc-badge--external     { background: var(--bc-cat-external); }

/* ---- tabs ---- */

.bc-tabs {
	display: flex;
	align-items: center;
	gap: 8px;
	overflow-x: auto;
	scrollbar-width: none;
}
.bc-tabs::-webkit-scrollbar { display: none; }

.bc-tab {
	flex: none;
	padding: 6px 16px;
	border: 1px solid var(--bc-border);
	border-radius: 999px;
	background: var(--bc-surface);
	color: var(--bc-text);
	font: inherit;
	font-size: 13px;
	cursor: pointer;
	transition: color .15s ease, background .15s ease, border-color .15s ease;
}
.bc-tab:hover { color: var(--bc-primary); border-color: var(--bc-primary); }
.bc-tab.is-active {
	background: var(--bc-primary);
	border-color: var(--bc-primary);
	color: #fff;
}

/* ---- update cards grid ---- */

.bc-updates__grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 24px 20px;
}

.bc-card {
	display: block;
	background: var(--bc-surface);
	border: 1px solid var(--bc-border);
	border-radius: var(--bc-radius);
	overflow: hidden;
	box-shadow: var(--bc-shadow);
	transition: box-shadow .2s ease, transform .2s ease;
}
.bc-card:hover {
	box-shadow: 0 2px 4px rgba(22,22,22,.05), 0 10px 28px rgba(22,22,22,.09);
	transform: translateY(-2px);
}
.bc-card .bc-card-media { border-radius: 0; }

.bc-card__body { padding: 14px 16px 16px; }

.bc-card__title {
	margin: 0 0 6px;
	font-size: 16px;
	font-weight: 600;
	line-height: 1.45;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}
.bc-card:hover .bc-card__title { color: var(--bc-primary); }

.bc-card__excerpt {
	margin: 0 0 12px;
	font-size: 13.5px;
	line-height: 1.6;
	color: var(--bc-text-2);
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.bc-card__meta {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 6px;
	margin: 0;
	font-size: 12.5px;
	color: var(--bc-text-2);
}
.bc-card__meta-item {
	display: inline-flex;
	align-items: center;
	gap: 5px;
	white-space: nowrap;
}
.bc-card__meta-sep { color: var(--bc-border); }

.bc-updates__more {
	display: none;
	margin-top: 28px;
	padding: 13px;
	border: 1px solid var(--bc-border);
	border-radius: 999px;
	align-items: center;
	justify-content: center;
	gap: 8px;
	font-size: 14px;
	color: var(--bc-primary);
	background: var(--bc-surface);
}

.bc-updates__loadmore {
	display: flex;
	margin: 20px auto 0;
	padding: 9px 26px;
	border: 1px solid var(--bc-border);
	border-radius: 999px;
	align-items: center;
	justify-content: center;
	gap: 8px;
	font: inherit;
	font-size: 13.5px;
	color: var(--bc-primary);
	background: var(--bc-surface);
	cursor: pointer;
	transition: color .15s ease, border-color .15s ease;
}
.bc-updates__loadmore:hover { border-color: var(--bc-primary); }
.bc-updates__loadmore:disabled { opacity: .55; cursor: default; }
.bc-updates__loadmore[hidden] { display: none; }

/* ---- Phase 10K.1 compact link list (homepage overflow items) ----
   "更新日期 完整标题" text rows for items beyond the image budget.
   Deliberately not a second card system: no box, no shadow, no image,
   no fixed height — just date column + wrapping title + hairline rules. */

.bc-clist {
	grid-column: 1 / -1;
	margin: 0;
	padding: 0;
	list-style: none;
}
.bc-clist__item { border-bottom: 1px solid var(--bc-border); }
.bc-clist__item:last-child { border-bottom: 0; }
.bc-clist__link {
	display: flex;
	align-items: baseline;
	gap: 16px;
	padding: 10px 2px;
	font-size: 14px;
	line-height: 1.55;
	transition: color .15s ease;
}
/* Fixed-basis date column + min-width:0 title: a wrapped title's second
   line starts under the title column, never back under the date. */
.bc-clist__date {
	flex: 0 0 5.5em;
	white-space: nowrap;
	font-variant-numeric: tabular-nums;
	font-size: 13px;
	color: var(--bc-text-2);
}
.bc-clist__title {
	flex: 1 1 auto;
	min-width: 0;
	font-weight: 500;
	white-space: normal;
	word-break: break-word;
	overflow-wrap: anywhere;
}
.bc-clist__link:hover { color: var(--bc-primary); }
.bc-clist__link:hover .bc-clist__title {
	text-decoration: underline;
	text-underline-offset: 3px;
}

/* Narrow focus column: tighter date/title gap, air below the scroller. */
.bc-focus .bc-clist { margin-top: 20px; }
.bc-focus .bc-clist__link { gap: 12px; padding: 9px 0; }

/* ---- external updates index link (/updates/) ---- */

.bc-updates-index-link { margin-top: 4px; }

/* ==========================================================================
   /updates/ — external link index (text-only chronological list)
   ========================================================================== */

.bc-extlist {
	max-width: var(--bc-container);
	margin: 0 auto;
	padding: 0 24px 72px;
}
.bc-extlist__rows {
	margin: 0;
	padding: 0;
	list-style: none;
	border-top: 1px solid var(--bc-border);
}
.bc-extlist__row {
	display: flex;
	align-items: baseline;
	gap: 18px;
	padding: 14px 4px;
	border-bottom: 1px solid var(--bc-border);
}
.bc-extlist__date {
	flex: 0 0 auto;
	min-width: 6.2em;
	font-variant-numeric: tabular-nums;
	font-size: 13.5px;
	color: var(--bc-text-2);
}
.bc-extlist__link {
	flex: 1 1 auto;
	min-width: 0;
	display: inline-flex;
	align-items: baseline;
	gap: 6px;
	font-size: 15px;
	font-weight: 500;
	line-height: 1.55;
}
.bc-extlist__link:hover { color: var(--bc-primary); text-decoration: underline; }
.bc-extlist__arrow { flex: none; color: var(--bc-text-2); }

@media (max-width: 640px) {
	.bc-extlist { padding: 0 20px 56px; }
	.bc-extlist__row { flex-direction: column; gap: 2px; padding: 12px 2px; }
	.bc-extlist__date { min-width: 0; font-size: 12.5px; }
	.bc-extlist__link { font-size: 14.5px; }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.bc-footer {
	background: var(--bc-surface);
	border-top: 1px solid var(--bc-border);
}

.bc-footer__inner {
	max-width: var(--bc-container);
	margin: 0 auto;
	padding: 28px 24px;
	display: flex;
	align-items: center;
	gap: 32px;
	flex-wrap: wrap;
}

.bc-footer__brand {
	display: flex;
	align-items: center;
	gap: 8px;
	flex: none;
}
.bc-footer__logo { height: 20px; width: auto; }
.bc-footer__cn { font-size: 12.5px; color: var(--bc-text-2); }

.bc-footer__links {
	display: flex;
	align-items: center;
	gap: 24px;
	flex: 1;
}
.bc-footer__links a { font-size: 13px; color: var(--bc-text-2); }
.bc-footer__links a:hover { color: var(--bc-primary); }

.bc-footer__copy {
	margin: 0;
	font-size: 12.5px;
	color: var(--bc-text-2);
	text-align: right;
}
.bc-footer__tagline { display: block; }

/* generic (non-home) main */
.bc-main--generic {
	max-width: var(--bc-container);
	margin: 0 auto;
	padding: 48px 24px 80px;
}

/* ==========================================================================
   Responsive — VIS-02 mobile
   ========================================================================== */

@media (max-width: 1080px) {
	.bc-home { grid-template-columns: 260px minmax(0, 1fr); gap: 32px; }
}

/* Desktop-dense band: between the mobile breakpoint and ~1180px the full
   brand + nav + search row cannot fit at base density, so chrome compacts
   and the search pill shrinks instead of overlapping the last nav item. */
@media (min-width: 921px) and (max-width: 1180px) {
	.bc-header__inner { padding: 0 14px; gap: 12px; }
	.bc-brand { gap: 8px; }
	.bc-brand__logo { height: 20px; }
	.bc-brand__cn { font-size: 12.5px; }
	.bc-nav__list { gap: 1px; }
	.bc-nav__link { padding: 8px 5px; }
	.bc-header__tools { gap: 10px; }
}

@media (max-width: 920px) {
	:root { --bc-header-h: 56px; }

	.bc-nav, .bc-search { display: none; }
	.bc-header__inner { padding: 0 12px; gap: 8px; }
	.bc-header__tools { margin-left: auto; gap: 6px; }
	.bc-iconbtn { width: 28px; height: 28px; flex: none; }
	.bc-iconbtn .bc-icon { width: 15px; height: 15px; }
	.bc-menu-toggle, .bc-search-btn { display: inline-flex; }
	.bc-brand { gap: 5px; min-width: 0; flex: none; }
	.bc-brand__logo { height: 16px; }
	.bc-brand__cn { font-size: 11px; white-space: nowrap; }

	.bc-mobile-nav {
		display: block;
		border-top: 1px solid var(--bc-border);
		background: var(--bc-surface);
	}
	.bc-mobile-nav[hidden] { display: none; }
	.bc-mobile-nav ul {
		margin: 0;
		padding: 8px 16px 16px;
		list-style: none;
		display: grid;
		grid-template-columns: 1fr 1fr;
		gap: 2px 12px;
	}
	.bc-mobile-nav a {
		display: block;
		padding: 10px 8px;
		font-size: 14.5px;
		border-radius: 6px;
	}
	.bc-mobile-nav a.is-active { color: var(--bc-primary); font-weight: 600; }

	/* hero */
	.bc-hero__inner {
		padding: 40px 20px;
		grid-template-columns: minmax(0, 1fr) auto;
		gap: 16px;
	}
	.bc-hero__micro { display: none; }
	.bc-hero__side { display: none; }
	.bc-hero__title { font-size: 26px; margin-bottom: 8px; }
	.bc-hero__sub { font-size: 13.5px; }
	.bc-hero__art { align-self: start; }
	.bc-hero__invader { width: 30px; }
	.bc-hero__art-caption { font-size: 8px; }

	/* home becomes single column */
	.bc-home {
		display: block;
		padding: 28px 0 56px;
	}
	.bc-focus, .bc-updates { padding: 0 16px; }
	.bc-updates { margin-top: 36px; }

	/* 聚焦 -> horizontal snap scroller */
	.bc-focus__scroller {
		flex-direction: row;
		gap: 14px;
		margin: 0 -16px;
		padding: 0 16px;
		overflow-x: auto;
		scroll-snap-type: x mandatory;
		scrollbar-width: none;
	}
	.bc-focus__scroller::-webkit-scrollbar { display: none; }
	.bc-focus-card {
		flex: 0 0 76%;
		scroll-snap-align: start;
		background: var(--bc-surface);
		border: 1px solid var(--bc-border);
		border-radius: var(--bc-radius);
		overflow: hidden;
		padding-bottom: 12px;
	}
	.bc-focus-card .bc-card-media { border-radius: 0; }
	.bc-focus-card__title, .bc-focus-card__meta { padding: 0 12px; }
	.bc-focus-card__title { font-size: 14.5px; margin-top: 12px; }
	.bc-focus-card__meta { font-size: 12px; }

	.bc-focus__dots {
		display: flex;
		justify-content: center;
		gap: 7px;
		margin-top: 16px;
	}
	.bc-dot {
		width: 7px;
		height: 7px;
		border-radius: 50%;
		background: var(--bc-border);
		transition: background .15s ease;
	}
	.bc-dot.is-active { background: var(--bc-primary); }

	/* updates -> 2 columns, compact */
	.bc-section-head--updates { align-items: flex-start; flex-direction: column; }
	.bc-tabs { margin: 4px -16px 0; padding: 0 16px; width: calc(100% + 32px); }
	.bc-updates__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 12px; }
	.bc-card__body { padding: 10px 12px 12px; }
	.bc-card__title { font-size: 14px; }
	.bc-card__excerpt { display: none; }
	.bc-card__meta { font-size: 11.5px; gap: 4px; }
	.bc-updates__more { display: flex; }

	/* compact list stays single-column; date column narrows, title wraps */
	.bc-clist__link { gap: 10px; padding: 9px 0; font-size: 13.5px; }
	.bc-clist__date { flex-basis: 5.2em; font-size: 12px; }
	.bc-focus .bc-clist { margin-top: 14px; }
	.bc-updates__loadmore { width: 100%; margin-top: 16px; }

	/* footer stacks */
	.bc-footer__inner { flex-direction: column; align-items: flex-start; gap: 14px; }
	.bc-footer__links { flex-wrap: wrap; gap: 16px; }
	.bc-footer__copy { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { transition: none !important; }
}