.merger-settings-panel,
.merger-list-panel,
.merger-preview {
  margin-bottom: 18px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
}

.merger-section-heading,
.merger-preview-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
}

.merger-section-heading .eyebrow,
.merger-preview-heading .eyebrow {
  margin: 0 0 5px;
}

.merger-section-heading h2,
.merger-preview-heading h2 {
  margin: 0;
  font-size: 1rem;
}

.merger-section-heading > strong,
.merger-section-heading > span,
.merger-preview-heading > span {
  color: var(--muted);
  font-size: .72rem;
  font-weight: 600;
  text-align: right;
}

.merger-settings {
  display: grid;
  grid-template-columns: repeat(3, minmax(130px, 1fr));
  gap: 12px;
}

.merger-settings label {
  margin: 0;
}

.merger-backgrounds {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.merger-backgrounds > span {
  margin-right: 3px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 700;
}

.merger-background-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: .72rem;
  cursor: pointer;
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.merger-background-button:hover {
  transform: translateY(-1px);
  border-color: #a9bdd0;
}

.merger-background-button.is-active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px #1668e81b;
}

.merger-background-button i {
  width: 18px;
  height: 18px;
  border: 1px solid #cbd5df;
  border-radius: 5px;
  background: var(--merger-color);
}

.merger-custom-color {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  padding: 4px 5px 4px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--muted);
  font-size: .72rem;
}

.merger-custom-color input[type="color"] {
  width: 31px;
  height: 27px;
  margin: 0;
  padding: 2px;
  border-radius: 6px;
}

.merger-drop {
  margin-bottom: 18px;
}

.merger-drop-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 4px;
}

.merger-list-panel {
  padding-bottom: 14px;
}

.merger-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 11px;
  min-height: 130px;
}

.merger-empty {
  display: grid;
  grid-column: 1 / -1;
  place-content: center;
  gap: 5px;
  min-height: 130px;
  border: 1px dashed #cad5df;
  border-radius: 11px;
  background: #f8fafc;
  color: var(--muted);
  text-align: center;
}

.merger-empty strong {
  color: var(--ink);
  font-size: .82rem;
}

.merger-empty span {
  font-size: .7rem;
}

.merger-item {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 11px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  cursor: grab;
  transition: opacity .15s ease, border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}

.merger-item:hover {
  border-color: #b7c7d5;
  box-shadow: 0 7px 17px #17314b0d;
}

.merger-item.is-dragging {
  opacity: .45;
  transform: scale(.98);
}

.merger-item.is-drop-target {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px #1668e81a;
}

.merger-item-preview {
  position: relative;
  width: 72px;
  height: 72px;
  overflow: hidden;
  border-radius: 8px;
  background-color: #fff;
  background-image: linear-gradient(45deg, #e5e9ed 25%, transparent 25%), linear-gradient(-45deg, #e5e9ed 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e5e9ed 75%), linear-gradient(-45deg, transparent 75%, #e5e9ed 75%);
  background-position: 0 0, 0 7px, 7px -7px, -7px 0;
  background-size: 14px 14px;
}

.merger-item-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.merger-item-index {
  position: absolute;
  top: 4px;
  left: 4px;
  display: grid;
  place-items: center;
  min-width: 21px;
  height: 21px;
  padding: 0 5px;
  border-radius: 99px;
  background: #152538dc;
  color: #fff;
  font: 700 .62rem 'DM Mono', monospace;
}

.merger-item-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.merger-item-copy strong {
  overflow: hidden;
  color: var(--ink);
  font-size: .75rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.merger-item-copy > span {
  margin-top: 4px;
  color: var(--muted);
  font-size: .65rem;
}

.merger-item-actions {
  display: flex;
  gap: 5px;
  margin-top: auto;
  padding-top: 8px;
}

.merger-item-actions button {
  display: grid;
  place-items: center;
  width: 28px;
  height: 27px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #f7f9fb;
  color: #516170;
  cursor: pointer;
}

.merger-item-actions button:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
}

.merger-item-actions button:last-child:hover {
  border-color: #d65c50;
  color: #c43f34;
}

.merger-item-actions button:disabled {
  opacity: .35;
  cursor: default;
}

.merger-actions {
  margin-top: 0;
}

.merger-preview {
  margin-top: 18px;
  margin-bottom: 0;
}

.merger-preview-stage {
  display: grid;
  place-items: center;
  min-height: 260px;
  max-height: 680px;
  overflow: auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background-color: #f7f9fb;
  background-image: linear-gradient(45deg, #e4e9ed 25%, transparent 25%), linear-gradient(-45deg, #e4e9ed 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e4e9ed 75%), linear-gradient(-45deg, transparent 75%, #e4e9ed 75%);
  background-position: 0 0, 0 9px, 9px -9px, -9px 0;
  background-size: 18px 18px;
}

.merger-preview-stage img {
  display: block;
  max-width: 100%;
  max-height: 620px;
  object-fit: contain;
  box-shadow: 0 12px 30px #162b4026;
}

@media (max-width: 700px) {
  .merger-settings {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .merger-section-heading,
  .merger-preview-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .merger-section-heading > strong,
  .merger-section-heading > span,
  .merger-preview-heading > span {
    text-align: left;
  }
}

@media (max-width: 470px) {
  .merger-settings-panel,
  .merger-list-panel,
  .merger-preview {
    padding: 15px;
  }

  .merger-settings {
    grid-template-columns: 1fr;
  }

  .merger-list {
    grid-template-columns: 1fr;
  }

  .merger-backgrounds > span {
    width: 100%;
  }
}