/* 实验楼大厅 —— 深夜实验室视觉，卡片墙由 hub.js 从 labs/registry.js 渲染。 */

html,
body {
  min-height: 100%;
  overflow-x: hidden;
}

/* 背景：深夜房间 + 缓慢呼吸的光晕 */
.hubBackdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% 0%, #101a2e 0%, var(--bg) 55%, var(--bg-deep) 100%);
}
.hubBackdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(52% 42% at 50% 46%, #41c8d51f 0%, transparent 70%);
  animation: hubBreath 9s ease-in-out infinite;
}
@keyframes hubBreath {
  0%,
  100% {
    opacity: 0.65;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.06);
  }
}

.hub {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 32px 72px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

/* 顶部：站标 + 标语 */
.hubHeader {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.hubWordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

/* 站标图标：与各馆 lab-trail 同一枚 brand-mark，按首页字号略放大。 */
.hubBrandMark {
  display: block;
  width: 1.6rem;
  height: 1.6rem;
  flex: 0 0 auto;
}
.hubTagline {
  color: var(--text-dim);
  font-size: 0.85rem;
  font-weight: 700;
}

/* 大标题（衬线，呼应各馆 hero） */
.hubHero {
  margin-top: 8px;
}
.hubTitle {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
}
.hubTitleDot {
  color: var(--red);
}
.hubSub {
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
  max-width: 40em;
}
.hubSub b {
  color: var(--text);
}

/* 顶部学科筛选条 */
.hubFilters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: -16px;
}
.hubFilterChip {
  font: inherit;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-muted);
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-pill);
  padding: 7px 16px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.18s, background 0.18s, border-color 0.18s;
}
.hubFilterChip:hover {
  color: var(--text);
  border-color: #ffffff40;
}
.hubFilterChip.isActive {
  color: var(--bg-deep);
  background: var(--text);
  border-color: var(--text);
}
/* 还没有实验室的学科：暗一点，但仍可点（点了看空态） */
.hubFilterChip.isEmpty {
  opacity: 0.45;
}

/* 卡片墙 */
.hubGrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}

/* 某学科暂无实验室时的占位提示 */
.hubEmpty {
  grid-column: 1 / -1;
  color: var(--text-muted);
  font-size: 0.95rem;
  padding: 40px 4px;
  text-align: center;
}

.labCard {
  --lab-glow: #41c8d5;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 26px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--panel-border);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  overflow: hidden;
  box-shadow: 0 24px 60px #00000059;
  transition: transform 0.22s, border-color 0.22s, box-shadow 0.22s;
}
/* 主题色光晕海报（纯 CSS，不跑 WebGL） */
.labCard::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto;
  height: 130%;
  background: radial-gradient(58% 52% at 72% 26%, var(--lab-glow) 0%, transparent 68%);
  opacity: 0.16;
  transition: opacity 0.25s;
  pointer-events: none;
}
.labCard:hover {
  transform: translateY(-4px);
  border-color: #ffffff40;
  box-shadow: 0 30px 70px #00000080, 0 0 30px color-mix(in srgb, var(--lab-glow) 25%, transparent);
}
.labCard:hover::before {
  opacity: 0.3;
}

.labEmoji {
  font-size: 2.6rem;
  line-height: 1;
}
.labName {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.labHook {
  font-family: var(--font-serif);
  font-size: 1.06rem;
  color: var(--text);
  opacity: 0.92;
}
.labSubtitle {
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.labTags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}
.labTag {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  white-space: nowrap;
}
.labTagSubject {
  color: var(--text);
  background: var(--panel-strong);
}

.labLinks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  border-top: 1px solid var(--panel-border-soft);
  padding-top: 14px;
}
.labChip {
  font-size: 0.78rem;
  font-weight: 900;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.18s, border-color 0.18s;
}
.labChip:hover {
  background: #ffffff1c;
  border-color: #ffffff47;
}

/* 建造中的馆：亮牌但不可进 */
.labCardWip {
  cursor: default;
  pointer-events: none;
}
.labCardWip .labEmoji,
.labCardWip .labHook,
.labCardWip .labSubtitle {
  opacity: 0.45;
}
.labCardWip::before {
  opacity: 0.08;
}
.labWipBadge {
  font-size: 0.7rem;
  font-weight: 900;
  color: var(--text-muted);
  border: 1px dashed var(--panel-border);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  letter-spacing: 0.08em;
}

.hubFooter {
  color: var(--text-dim);
  font-size: 0.76rem;
  line-height: 1.7;
}
.hubFooter a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
  opacity: 0.85;
}
.hubFooter a:hover {
  opacity: 1;
}
.hubIcp {
  margin: 4px 0 0;
}
.hubIcp a {
  color: var(--text-muted);
  opacity: 1;
}

@media (max-width: 540px) {
  .hub {
    padding: 32px 20px 56px;
    gap: 30px;
  }
  .hubGrid {
    grid-template-columns: 1fr;
  }
}