/* 选择 AI 工具 — 全平台共用弹窗（AI Studio / 下载中心） */
.portal-picker {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}
.portal-picker[hidden] { display: none !important; }
.portal-picker-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(4px);
}
.portal-picker-dialog {
  position: relative;
  width: min(1400px, calc(100vw - 32px));
  max-height: min(90vh, 720px);
  overflow: auto;
  background: var(--bg-card, var(--at-bg-elevated, #141414));
  border: 1px solid var(--border, var(--at-border, rgba(212, 168, 83, 0.22)));
  border-radius: 12px;
  padding: 28px 24px 32px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}
.portal-picker-header {
  position: relative;
  text-align: center;
  margin-bottom: 24px;
  padding-right: 36px;
}
.portal-picker-header h2 {
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text, var(--at-text, #f2f0eb));
}
.portal-picker-sub {
  color: var(--text2, var(--at-text2, rgba(242, 240, 235, 0.58)));
  font-size: 0.88rem;
}
.portal-picker-close {
  position: absolute;
  top: 0;
  right: 0;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border, var(--at-border, rgba(212, 168, 83, 0.22)));
  border-radius: 6px;
  background: transparent;
  color: var(--text2, var(--at-text2, rgba(242, 240, 235, 0.58)));
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}
.portal-picker-close:hover {
  border-color: var(--accent, var(--at-accent, #d4a853));
  color: var(--accent, var(--at-accent, #d4a853));
}
.portal-picker-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}
@media (max-width: 1100px) {
  .portal-picker-grid {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 12px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }
  .portal-picker-card {
    flex: 0 0 min(210px, 32vw);
    min-width: 168px;
  }
}
.portal-picker-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border, var(--at-border, rgba(212, 168, 83, 0.22)));
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-surface, var(--at-card-bg, rgba(14, 14, 18, 0.72)));
  cursor: pointer;
  padding: 0;
  font: inherit;
  color: inherit;
  text-align: left;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.portal-picker-card:hover {
  border-color: var(--accent, var(--at-accent, #d4a853));
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}
.portal-picker-card.current {
  border-color: var(--accent, var(--at-accent, #d4a853));
  box-shadow: 0 0 0 1px var(--accent, var(--at-accent, #d4a853));
}
.portal-picker-card-img {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
  display: block;
  background: var(--bg-dark, var(--at-bg, #060608));
}
.portal-picker-card-body {
  padding: 14px 14px 16px;
}
.portal-picker-card-title {
  font-size: 0.92rem;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--accent, var(--at-accent, #d4a853));
  line-height: 1.35;
}
.portal-picker-card-desc {
  font-size: 0.72rem;
  color: var(--text2, var(--at-text2, rgba(242, 240, 235, 0.58)));
  line-height: 1.45;
}
body.portal-picker-open { overflow: hidden; }
#portalPickerGrid.is-switching {
  pointer-events: none;
  opacity: 0.85;
}

/* 工具箱页头 — AI Studio / 下载中心 / 辅助工具共用 */
.hub-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
  padding: 0 4px;
}
.hub-header-left {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex: 1;
  min-width: 0;
}
.hub-header-right {
  flex-shrink: 0;
}
.hub-title {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text, var(--at-text, #f2f0eb));
  margin-bottom: 0;
  white-space: nowrap;
}
.hub-sub {
  color: var(--text2, var(--at-text2, rgba(242, 240, 235, 0.58)));
  font-size: 0.85rem;
  flex: 1;
  min-width: 0;
}
.hub-switch-btn {
  border: 1px solid var(--accent, var(--at-accent, #d4a853));
  color: var(--accent, var(--at-accent, #d4a853));
  font-size: 0.8rem;
  padding: 6px 14px;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}
.hub-switch-btn:hover {
  background: var(--accent, var(--at-accent, #d4a853));
  color: var(--text-on-accent, #1a1a1a);
}