.options-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--feature-card-bg);
    border-radius: 10px;
    border: 1px solid var(--input-border);
}

.option-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-color);
    user-select: none;
}

.option-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #00dbde;
    cursor: pointer;
}

.radius-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bg-color-label input[type="color"] {
    width: 40px;
    height: 28px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    padding: 0;
    background: var(--input-bg);
    cursor: pointer;
}

.radius-label input[type="range"] {
    width: 120px;
    accent-color: #00dbde;
    cursor: pointer;
}

.radius-label span {
    min-width: 2ch;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.brightness-info {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--text-color);
    opacity: 0.6;
}

.count-info {
    margin-left: auto;
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.7;
}

.btn.secondary {
    padding: 10px 15px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn.secondary:hover {
    background-color: var(--button-hover);
    transform: translateY(-2px);
}

.gallery {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.image-card {
    background: var(--feature-card-bg);
    border-radius: 10px;
    border: 1px solid var(--input-border);
    overflow: hidden;
}

.image-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    user-select: none;
    border-bottom: 1px solid var(--input-border);
}

.image-card-header .expand-icon {
    transition: transform 0.3s ease;
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.5;
    width: 1.2rem;
}

.image-card.open .image-card-header .expand-icon {
    transform: rotate(90deg);
}

.image-card-header .file-name {
    font-weight: 600;
    color: var(--text-color);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.image-card-header .card-status {
    font-size: 0.85rem;
    color: var(--text-color);
    opacity: 0.6;
}

.image-card-body {
    display: none;
    padding: 1rem;
}

.image-card.open .image-card-body {
    display: block;
}

.compare-container {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.compare-panel {
    flex: 1;
    min-width: 0;
}

.compare-panel h3 {
    text-align: center;
    margin-bottom: 0.75rem;
    font-size: 1rem;
    color: var(--text-color);
}

.compare-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-color);
    opacity: 0.4;
    padding-top: 2rem;
    flex-shrink: 0;
}

.image-box {
    position: relative;
    background: repeating-conic-gradient(#ccc 0% 25%, #fff 0% 50%) 50% / 16px 16px;
    border-radius: 10px;
    border: 1px solid var(--input-border);
    overflow: hidden;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-box canvas {
    max-width: 100%;
    max-height: 400px;
    display: block;
}

.action-bar {
    text-align: center;
}

@media (max-width: 768px) {
    .compare-container {
        flex-direction: column;
        gap: 1rem;
    }

    .compare-arrow {
        transform: rotate(90deg);
        padding: 0;
    }

    .options-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .brightness-info,
    .count-info {
        margin-left: 0;
    }

    .image-box canvas {
        max-height: 300px;
    }
}