/* 中华英雄榜 — Phase 5 (VIS-01~08 light language)
   Phase 8A.2 — Selected Card Spotlight Expansion + densha_go_ns skin */

/* Phase 10D: cap the leaderboard shell to the global container so the grid
   does not stretch edge-to-edge on wide viewports. */
.bc-lb { max-width: var(--bc-container); margin-left: auto; margin-right: auto; }

.bc-lb__head { padding: 0 24px 24px; }
.bc-kicker { font-size: 11px; letter-spacing: .25em; color: var(--bc-text-2); margin: 0 0 8px; }
.bc-lb__title { font-size: 30px; margin: 0 0 6px; }
.bc-lb__sub { color: var(--bc-text-2); margin: 0 0 18px; }
.bc-lb__sort { display: flex; gap: 8px; }
.bc-lb__sortbtn { padding: 6px 14px; border: 1px solid var(--bc-border); border-radius: 999px; text-decoration: none; color: var(--bc-text); font-size: 13px; }
.bc-lb__sortbtn.is-on { background: var(--bc-text); color: var(--bc-surface); border-color: var(--bc-text); }

.bc-lb__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 0 24px 48px; }
.bc-lbcard { border: 1px solid var(--bc-border); border-radius: 12px; background: var(--bc-surface); overflow: hidden; cursor: pointer; transition: box-shadow .15s ease, opacity .18s ease, transform .18s ease; }
.bc-lbcard:hover, .bc-lbcard:focus { box-shadow: 0 8px 22px rgba(22,22,22,.1); outline: none; }
.bc-lbcard__cover { margin: 0; aspect-ratio: 4/3; background: var(--bc-bg); }
.bc-lbcard__cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.bc-lbcard__ph { display: flex; width: 100%; height: 100%; align-items: center; justify-content: center; font-size: 11px; letter-spacing: .25em; color: var(--bc-text-2); }
.bc-lbcard__title { font-size: 15px; margin: 12px 14px 2px; }
.bc-lbcard__meta { font-size: 12px; color: var(--bc-text-2); margin: 0 14px; }
.bc-lbcard__stats { font-size: 12px; color: var(--bc-text-2); margin: 8px 14px 14px; }

/* ===== Spotlight expansion ===== */
.bc-lb__grid.is-spotlight { grid-template-columns: repeat(4, 1fr); align-content: start; }
.bc-lbcard.is-exiting { opacity: 0; transform: scale(.97); pointer-events: none; }
.bc-lbcard.is-gone { display: none !important; }
.bc-lbcard.is-selected { cursor: default; z-index: 2; position: relative; }
.bc-lbcard.is-selected.is-pulled {
	transform: translateY(-4px) scale(1.04);
	box-shadow: 0 14px 34px rgba(22,22,22,.18);
	transition: transform .22s ease, box-shadow .22s ease;
}
.bc-lbmod { grid-column: 1 / -1; border: 1px solid var(--bc-border); border-radius: 12px; background: var(--bc-surface); padding: 18px; transition: opacity .3s ease, transform .3s ease; }
.bc-lbmod.is-entering { opacity: 0; transform: translateY(10px); }
.bc-lbmod.is-exiting { opacity: 0; transform: translateY(8px); pointer-events: none; }
.bc-lbmod__bar { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.bc-lbmod__title { font-size: 18px; margin: 0; flex: 0 0 auto; }
.bc-lbmod__tabs { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; }
.bc-lbmod__tab { padding: 5px 12px; border: 1px solid var(--bc-border); border-radius: 999px; background: none; font: inherit; font-size: 13px; cursor: pointer; }
.bc-lbmod__tab.is-on { background: var(--bc-primary); border-color: var(--bc-primary); color: #fff; }
.bc-lbmod__close { margin-left: auto; border: 0; background: none; font-size: 22px; cursor: pointer; color: var(--bc-text); }
.bc-lbmod__body { margin-top: 14px; overflow-x: auto; }
.bc-lbmod__layout { display: block; }
.bc-lbmod__table { width: 100%; border-collapse: collapse; font-size: 14px; }
.bc-lbmod__table th, .bc-lbmod__table td { text-align: left; padding: 9px 10px; border-top: 1px dashed var(--bc-border); }
.bc-lbmod__table thead th { border-top: 0; color: var(--bc-text-2); font-weight: 600; }
.bc-lbmod__rank { color: var(--bc-accent); font-weight: 700; width: 3em; }
.bc-lbmod__pid { font-size: 11px; color: var(--bc-text-2); }
.bc-lbmod__val { font-variant-numeric: tabular-nums; font-weight: 600; }
.bc-lbmod__foot { margin: 10px 0 0; }
.bc-lbmod__retry { margin: 6px 0 0; padding: 6px 18px; border: 1px solid var(--bc-border); border-radius: 999px; background: var(--bc-surface); font: inherit; cursor: pointer; }
.bc-lbmod__err { margin: 8px 0 0; }

/* anonymous gate — no spotlight, other cards untouched */
.bc-lbgate { grid-column: 1 / -1; display: flex; align-items: center; gap: 14px; border: 1px dashed var(--bc-border); border-radius: 12px; padding: 16px 18px; background: var(--bc-surface); }
.bc-lbgate p { margin: 0; flex: 1; color: var(--bc-text-2); font-size: 14px; }
.bc-lbgate .bc-btn { padding: 8px 22px; background: var(--bc-primary); color: #fff; border-radius: 999px; text-decoration: none; }
.bc-lbgate__close { border: 0; background: none; font-size: 20px; cursor: pointer; color: var(--bc-text-2); }

/* skin: retro demo variant — interior only */
.bc-lbmod--retro { background: #f4efdf; font-family: var(--bc-font-mono, monospace); }
.bc-lbmod--retro .bc-lbmod__tab.is-on { background: var(--bc-accent); border-color: var(--bc-accent); }

/* ===== skin: densha_go_ns — original game ranking visual language ===== */
.bc-lbmod--densha_go_ns { background: linear-gradient(180deg, #0d2418, #123322 55%, #0c2015); border-color: #1e5c38; color: #eaf5ec; padding: 0; overflow: hidden; }
.bc-lbmod--densha_go_ns .bc-lbmod__bar { padding: 14px 18px 0; }
.bc-lbmod--densha_go_ns .bc-lbmod__title { color: #d9f2df; text-shadow: 0 1px 0 rgba(0,0,0,.4); }
.bc-lbmod--densha_go_ns .bc-lbmod__tabs { display: none; }
.bc-lbmod--densha_go_ns .bc-lbmod__close { color: #d9f2df; }
.bc-lbmod--densha_go_ns .bc-lbmod__body { margin-top: 0; overflow-x: visible; }

/* original three category tabs (IA normal / AC selected assets) */
.bc-dgo__tabs { display: flex; gap: 10px; padding: 12px 18px 14px; overflow-x: auto; scrollbar-width: thin; }
.bc-dgo__tab { position: relative; flex: 0 0 auto; border: 0; background: none; padding: 0; cursor: pointer; line-height: 0; border-radius: 8px; }
.bc-dgo__tabimg { display: block; width: 230px; height: auto; }
.bc-dgo__tabimg--ac { display: none; }
.bc-dgo__tab.is-on .bc-dgo__tabimg--ia { display: none; }
.bc-dgo__tab.is-on .bc-dgo__tabimg--ac { display: block; }
.bc-dgo__tab.is-on { filter: drop-shadow(0 0 10px rgba(140,220,120,.45)); }
.bc-dgo__tab:focus-visible { outline: 2px solid #8cdc78; outline-offset: 2px; }
.bc-dgo__tabtext { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 700; color: #fff; text-shadow: 0 1px 3px rgba(0,0,0,.65); letter-spacing: .12em; line-height: 1.2; }

/* layout: left vertical board selector + right ranking panel — content-driven
   height, no inner scrollbar on desktop (Phase 8A.3) */
.bc-lbmod--densha_go_ns .bc-lbmod__layout { display: grid; grid-template-columns: 260px 1fr; gap: 18px; padding: 0 18px 20px; align-items: start; }
.bc-dgo__side { display: flex; flex-direction: column; gap: 14px; padding: 6px 14px 6px 6px; overflow: visible; }
.bc-dgo__board { box-sizing: border-box; width: 100%; display: flex; align-items: center; gap: 14px; min-height: 74px; padding: 10px 16px; border: 2px solid rgba(140,220,120,.28); border-radius: 12px; background: rgba(10,30,18,.55); color: #eaf5ec; font: inherit; font-size: 17px; cursor: pointer; text-align: left; transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease; }
.bc-dgo__boardicon { flex: 0 0 auto; width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; }
.bc-dgo__boardicon img { width: 56px; height: 56px; object-fit: contain; transform: none; }
.bc-dgo__boardicon--fallback { border: 1px dashed rgba(159,216,171,.5); border-radius: 8px; }
.bc-dgo__boardicon--fallback::after { content: ""; width: 20px; height: 20px; background: rgba(140,220,120,.35); transform: rotate(45deg); border-radius: 3px; }
.bc-dgo__boardname { line-height: 1.3; font-size: 17px; }
/* selected state applies to the card wrapper only — icon never scales */
.bc-dgo__board.is-on { transform: scale(1.015); transform-origin: left center; border: 2px solid #f4a900; box-shadow: 0 0 0 2px rgba(255,190,0,.15), 0 5px 18px rgba(0,0,0,.22); background: rgba(24,64,38,.8); }

/* ranking panel — enlarged, game-screen feel */
.bc-dgo__panel { border-radius: 12px; background: linear-gradient(160deg, #16402a 0%, #0f2f1d 60%, #0b2517 100%); border: 1px solid #2a6b42; box-shadow: inset 0 0 40px rgba(0,0,0,.3); padding: 16px 20px 14px; min-height: 220px; }
.bc-dgo__panelhead { border-bottom: 1px solid rgba(159,216,171,.25); padding-bottom: 10px; margin-bottom: 6px; }
.bc-dgo__panelhead span { font-size: 15px; letter-spacing: .3em; color: #9fd8ab; }
.bc-dgo__headerimg { display: block; max-width: 100%; height: auto; }
.bc-dgo__table { width: 100%; border-collapse: collapse; font-size: 16px; color: #eaf5ec; }
.bc-dgo__table th, .bc-dgo__table td { text-align: left; padding: 13px 14px; }
.bc-dgo__table thead th { color: #9fd8ab; font-weight: 600; font-size: 15px; border-bottom: 1px solid rgba(159,216,171,.3); }
.bc-dgo__table tbody tr { border-top: 1px solid rgba(159,216,171,.12); }
.bc-dgo__table tbody tr:first-child { border-top: 0; }
.bc-dgo__rank { width: 5.5em; }
.bc-dgo__rankimg { height: 34px; width: auto; display: block; }
.bc-dgo__ranknum { font-weight: 700; font-size: 17px; color: #cfe8d2; font-variant-numeric: tabular-nums; padding-left: .4em; }
.bc-dgo__player { font-weight: 600; font-size: 17px; }
.bc-dgo__score { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 18px; color: #ffe9a8; }
.bc-dgo__mission { color: #b9d6bf; font-size: 15px; }
.bc-dgo__empty { text-align: center; color: #9fd8ab; padding: 40px 0 !important; font-size: 15px; }
.bc-dgo__loading { color: #9fd8ab; padding: 40px 0; text-align: center; font-size: 15px; }
.bc-dgo__foot { margin: 12px 0 0; font-size: 13px; color: #7fb78c; }
.bc-dgo__gate { padding: 34px 8px; text-align: center; color: #d9f2df; }
.bc-dgo__gate .bc-btn { display: inline-block; margin-top: 10px; padding: 8px 22px; background: #3d9b57; color: #fff; border-radius: 999px; text-decoration: none; }
.bc-lbmod--densha_go_ns .bc-lbmod__err { color: #f3c0c0; }
.bc-lbmod--densha_go_ns .bc-lbmod__retry { background: rgba(24,64,38,.8); color: #eaf5ec; border-color: rgba(140,220,120,.4); }

/* ===== responsive ===== */
/* Phase 10D: floor each card track at 270px once the container is wide
   enough to fit 4x270 + gaps + padding (1184px), so cards never render
   narrower than ~270px in the 4-column layout. */
@media (min-width: 1184px) {
	.bc-lb__grid, .bc-lb__grid.is-spotlight { grid-template-columns: repeat(4, minmax(270px, 1fr)); }
}

/* Phase 10D.1: 3-col breakpoint raised 1100 -> 1183 so it connects seamlessly
   with the 1184px 4-col minmax rule; the 1101-1183 band no longer falls back
   to bare repeat(4,1fr) which produced 250-270px cards. */
@media (max-width: 1183px) {
	.bc-lb__grid, .bc-lb__grid.is-spotlight { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
	.bc-lb__grid, .bc-lb__grid.is-spotlight { grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 0 16px 40px; }
	.bc-lb__head { padding: 0 16px 18px; }
	.bc-lbmod__table { font-size: 13px; }
	/* spotlight: selected card takes a full row, ranking below it */
	.bc-lb__grid.is-spotlight { grid-template-columns: 1fr; }
	.bc-lbcard.is-selected { max-width: 420px; }
	/* densha skin mobile: tabs + boards horizontal scroll, panel full width */
	.bc-lbmod--densha_go_ns .bc-lbmod__layout { display: block; padding: 0 12px 14px; }
	.bc-dgo__tabs { padding: 10px 12px 12px; gap: 8px; }
	.bc-dgo__tabimg { width: 176px; }
	.bc-dgo__tabtext { font-size: 13px; }
	.bc-dgo__side { flex-direction: row; overflow-x: auto; overflow-y: hidden; padding: 4px 12px 12px; gap: 10px; }
	.bc-dgo__board { flex: 0 0 auto; width: auto; min-height: 56px; padding: 8px 12px; gap: 10px; font-size: 14px; }
	.bc-dgo__boardicon, .bc-dgo__boardicon img { width: 40px; height: 40px; }
	.bc-dgo__boardname { font-size: 14px; }
	.bc-dgo__board.is-on { transform: none; }
	.bc-dgo__panel { padding: 12px 10px 10px; }
	/* two-line rank rows: rank | player | score / mission */
	.bc-dgo__table { font-size: 14px; }
	.bc-dgo__table thead { display: none; }
	.bc-dgo__table tbody tr { display: grid; grid-template-columns: 3.4em 1fr auto; align-items: center; padding: 8px 0; }
	.bc-dgo__table td { padding: 2px 6px; border: 0; }
	.bc-dgo__table td.bc-dgo__mission { grid-column: 2 / -1; font-size: 12.5px; overflow-wrap: anywhere; }
	.bc-dgo__table td[colspan] { display: block; }
	.bc-dgo__player, .bc-dgo__score { font-size: 15px; }
	.bc-dgo__rankimg { height: 30px; }
}
@media (max-width: 390px) {
	.bc-lbmod--densha_go_ns .bc-lbmod__bar { padding: 12px 12px 0; }
	.bc-dgo__tabimg { width: 152px; }
	.bc-lbcard.is-selected.is-pulled { transform: none; }
}

/* reduced motion: no FLIP / travel, keep simple fades */
@media (prefers-reduced-motion: reduce) {
	.bc-lbcard, .bc-lbmod, .bc-dgo__board { transition: opacity .01s linear !important; transform: none !important; }
	.bc-lbcard.is-selected.is-pulled { transform: none; }
	.bc-lbmod.is-entering, .bc-lbmod.is-exiting { transform: none; }
}