.logo-bg-panel {
  margin-top: var(--space-5);
}

.logo-setting-card {
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow-sm);
}

.logo-setting-card h3 {
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.45;
}

.logo-setting-card p {
  margin: 10px 0 0;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.logo-color-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
}

.logo-color-input {
  width: 64px;
  height: 52px;
  padding: 4px;
  border: 1px solid rgba(217, 225, 236, 0.92);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  cursor: pointer;
}

.logo-output-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.logo-output-option {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 92px;
  padding: 16px 18px;
  border: 1px solid rgba(217, 225, 236, 0.92);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.logo-output-option:hover {
  transform: translateY(-1px);
  border-color: rgba(22, 93, 255, 0.22);
  box-shadow: var(--shadow-md);
}

.logo-output-option.active {
  border-color: rgba(22, 93, 255, 0.28);
  background: linear-gradient(180deg, rgba(22, 93, 255, 0.08), rgba(255, 255, 255, 0.92));
  box-shadow: 0 16px 36px rgba(22, 93, 255, 0.08);
}

.logo-output-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.logo-output-title {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1.45;
  color: var(--color-text);
}

.logo-output-desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.logo-bg-summary {
  display: block;
  margin-top: var(--space-4);
}

.logo-preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.logo-preview-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.logo-preview-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid rgba(217, 225, 236, 0.72);
}

.logo-preview-head h3 {
  margin: 0;
  font-size: var(--text-lg);
}

.logo-preview-surface {
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-align: center;
  color: var(--color-text-secondary);
  background:
    linear-gradient(45deg, rgba(226, 232, 240, 0.48) 25%, transparent 25%, transparent 75%, rgba(226, 232, 240, 0.48) 75%),
    linear-gradient(45deg, rgba(226, 232, 240, 0.48) 25%, transparent 25%, transparent 75%, rgba(226, 232, 240, 0.48) 75%);
  background-position: 0 0, 12px 12px;
  background-size: 24px 24px;
  background-color: #fff;
}

.logo-preview-surface img {
  max-width: 100%;
  max-height: 320px;
  object-fit: contain;
  display: block;
}

@media (max-width: 768px) {
  .logo-output-grid,
  .logo-preview-grid {
    grid-template-columns: 1fr;
  }
}