/* 浏览页 / 标签页 —— 只用 tokens.css 的变量，类名统一 bv- 前缀 */

.bv {
  --bv-top: 0px; /* 通栏导航的实测高度，BrowseView 挂载时写进内联 style */
  position: relative;
  padding-top: 4px;
  padding-bottom: 8px;
  background: var(--bg-page);
}

/* ============ 标签条 ============ */
.bv-bar {
  position: sticky;
  top: var(--bv-top);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px 10px;
  overflow-x: auto;
  background: var(--bg-page);
  scrollbar-width: none;
}

.bv-bar::-webkit-scrollbar { display: none; }

.bv-bar.is-loading { pointer-events: none; }

.bv-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  padding: 7px 15px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  color: var(--text-2);
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.bv-chip:hover { color: var(--text); background: var(--hover-overlay); }

.bv-chip.is-on {
  color: var(--text-on-primary);
  border-color: transparent;
  background: var(--primary);
}

.bv-chip.is-on:hover { background: var(--primary-hover); }

.bv-chip__label { line-height: 1; }

.bv-chip__count {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
}

.bv-chip.is-on .bv-chip__count { color: var(--text-on-primary); opacity: 0.75; }

.bv-chip--ghost {
  width: 74px;
  height: 30px;
  padding: 0;
  border-color: var(--bg-surface-muted);
  background: var(--bg-surface-muted);
  opacity: 0.6;
}

/* ============ 标题行 ============ */
.bv-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 4px 18px 14px;
}

.bv-head__title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.2px;
  color: var(--text);
}

.bv-head__count {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

/* ============ 空态 ============ */
.bv-empty {
  display: grid;
  justify-items: center;
  gap: 14px;
  padding: 80px 18px 120px;
  text-align: center;
}

.bv-empty__title {
  margin: 0;
  font-size: 14px;
  color: var(--text-2);
}

.bv-empty__btn {
  padding: 9px 20px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--bg-surface-muted);
}

.bv-empty__btn:hover {
  border-color: var(--border-strong);
  background: var(--hover-overlay);
}

/* ============ 底部状态 ============ */
.bv-status {
  padding: 8px 0 40px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

/* ============ 窄屏 ============ */
@media (max-width: 760px) {
  .bv-bar {
    gap: 8px;
    padding: 6px 12px 8px;
  }

  .bv-chip {
    padding: 6px 12px;
    font-size: 11px;
  }

  .bv-chip__count { font-size: 9px; }

  .bv-chip--ghost {
    width: 62px;
    height: 26px;
  }

  .bv-head {
    gap: 8px;
    padding: 2px 12px 10px;
  }

  .bv-head__title { font-size: 15px; }

  .bv-head__count { font-size: 11px; }

  .bv-empty { padding: 56px 16px 96px; }

  .bv-status { padding: 6px 0 32px; }
}