.content {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(27, 32, 39, 0.9);
}

body.has-gallery-backdrop .topbar {
  background: var(--panel);
  backdrop-filter: none;
}

body.has-gallery-backdrop .sidebar,
body.has-gallery-backdrop .content {
  background: rgba(27, 32, 39, 0.68);
  backdrop-filter: blur(8px);
}

.sidebar {
  position: sticky;
  top: 14px;
  overflow: hidden;
}

.sidebar-head,
.content-head {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  padding: 0.65rem 0.7rem;
  border-bottom: 1px solid var(--line);
}

.sidebar-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.35rem;
}

.sidebar-count {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.2;
  text-align: center;
}

.sidebar-title-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.55rem;
}

.sidebar-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.86rem;
  white-space: nowrap;
  cursor: pointer;
  justify-self: end;
}

.sidebar-toggle input {
  width: auto;
  min-height: 0;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.sidebar h2,
.content h2 {
  font-size: 1rem;
}

.sidebar-title-row h2 {
  justify-self: start;
}

.sidebar-head > input[type="search"] {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.model-list,
.gallery-list {
  display: grid;
  gap: 0.55rem;
  padding: 0.6rem;
}

.list-limit-note {
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  background: rgba(18, 22, 28, 0.7);
  font-size: 0.82rem;
}

.model-card,
.gallery-card {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 0.6rem;
  align-items: center;
  width: 100%;
  padding: 0.35rem;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #252c36;
  color: var(--text);
  text-decoration: none;
}

.model-card:hover,
.gallery-card:hover,
.browser-model-card:hover,
.favorite-image-card:hover {
  border-color: rgba(230, 180, 80, 0.58);
  background: #313946;
}

.favorite-btn {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  z-index: 2;
  min-width: 32px;
  min-height: 32px;
  padding: 0;
  border-color: rgba(230, 180, 80, 0.34);
  background: rgba(18, 22, 28, 0.82);
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
}

.favorite-btn.is-favorite {
  color: var(--accent);
  border-color: rgba(230, 180, 80, 0.72);
}

.favorite-btn:disabled {
  opacity: 0.45;
}

.seen-btn,
.seen-badge {
  position: absolute;
  top: 0.45rem;
  left: 0.45rem;
  z-index: 2;
  display: grid;
  place-items: center;
  min-width: 32px;
  min-height: 32px;
  border: 1px solid rgba(95, 183, 178, 0.34);
  border-radius: 8px;
  background: rgba(18, 22, 28, 0.82);
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
}

.seen-btn.is-seen,
.seen-badge {
  color: var(--accent-2);
  border-color: rgba(95, 183, 178, 0.72);
}

.seen-btn:disabled {
  opacity: 0.45;
}

.image-seen-toggle {
  padding: 0;
  cursor: pointer;
}

.image-seen-toggle:disabled {
  cursor: default;
}

.model-card img,
.gallery-card img {
  width: 72px;
  aspect-ratio: 1;
  border-radius: 6px;
  object-fit: cover;
  background: #11161c;
}

.sidebar-hover-preview {
  position: fixed;
  z-index: 60;
  width: 240px;
  padding: 0.5rem;
  border: 1px solid rgba(230, 180, 80, 0.38);
  border-radius: 10px;
  background: rgba(18, 22, 28, 0.96);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.34);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 120ms ease, transform 120ms ease;
}

.sidebar-hover-preview.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.sidebar-hover-preview img {
  display: block;
  width: 100%;
  aspect-ratio: 1.15;
  border-radius: 8px;
  object-fit: cover;
  background: #11161c;
}

.sidebar-hover-preview-caption {
  padding: 0.45rem 0.2rem 0.1rem;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 650;
  line-height: 1.2;
  text-align: center;
}

.app-tooltip {
  position: fixed;
  z-index: 140;
  max-width: min(280px, calc(100vw - 24px));
  padding: 0.42rem 0.58rem;
  border: 1px solid rgba(230, 180, 80, 0.42);
  border-radius: 8px;
  background: rgba(18, 22, 28, 0.97);
  color: var(--text);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.36);
  font-size: 0.78rem;
  font-weight: 650;
  line-height: 1.2;
  pointer-events: none;
  opacity: 0;
  transform: translateY(3px);
  transition: opacity 90ms ease, transform 90ms ease;
  white-space: normal;
}

.app-tooltip.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 820px), (hover: none), (pointer: coarse) {
  .app-tooltip,
  .app-tooltip.is-visible {
    display: none !important;
  }
}

.card-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 700;
  text-transform: capitalize;
}

.card-sub {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.gallery-list {
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 8px;
}

.gallery-list.latest-gallery-list {
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 8px;
}

.latest-gallery-card {
  display: block;
  padding: 0;
  overflow: hidden;
  text-align: left;
}

.latest-gallery-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 6px 6px 0 0;
  object-fit: cover;
}

.latest-gallery-card > div {
  display: grid;
  gap: 0.15rem;
  padding: 0.55rem 0.6rem 0.65rem;
}