/**
 * 图片拼接工具样式
 */

.join-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 选项区域 */
.options-section {
    background: var(--color-bg-secondary);
    border-radius: 12px;
    padding: 16px 20px;
    border: 1px solid var(--color-border-light);
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.option-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
}

.option-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.option-btn {
    cursor: pointer;
}

.option-btn input {
    display: none;
}

.option-btn span {
    display: inline-block;
    padding: 6px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 12px;
    color: var(--color-text-secondary);
    transition: var(--transition);
    white-space: nowrap;
}

.option-btn:hover span {
    border-color: var(--color-primary);
}

.option-btn.active span {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* 滑块 */
.slider-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-group input[type="range"] {
    width: 100px;
    height: 4px;
    -webkit-appearance: none;
    background: var(--color-border);
    border-radius: 2px;
    outline: none;
}

.slider-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border-radius: 50%;
    cursor: pointer;
}

.slider-value {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    min-width: 45px;
}

/* 颜色选择器 */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.color-picker-wrapper input[type="color"] {
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 2px;
    cursor: pointer;
}

.color-value {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

/* 上传区域 */
.upload-section {
    background: var(--color-bg-secondary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--color-border-light);
}

.upload-area {
    border: 2px dashed var(--color-border);
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.upload-text {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.upload-link {
    color: var(--color-primary);
    font-weight: 500;
}

.upload-hint {
    font-size: 12px;
    color: var(--color-text-light);
    margin-top: 8px;
}

/* 图片列表 */
.images-section {
    background: var(--color-bg-secondary);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--color-border-light);
}

.images-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.images-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.images-actions {
    display: flex;
    gap: 8px;
}

.btn-sm {
    padding: 6px 12px;
    border: none;
    background: var(--color-bg);
    border-radius: 6px;
    font-size: 12px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.btn-sm:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.images-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    min-height: 80px;
    padding: 12px;
    background: var(--color-bg);
    border-radius: 8px;
}

.image-item {
    position: relative;
    width: 100px;
    height: 100px;
    border-radius: 8px;
    overflow: hidden;
    cursor: grab;
    border: 2px solid transparent;
    transition: var(--transition);
}

.image-item:hover {
    border-color: var(--color-primary);
}

.image-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-item .delete-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(0,0,0,0.6);
    color: white;
    border: none;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-item:hover .delete-btn {
    opacity: 1;
}

.image-item .image-index {
    position: absolute;
    bottom: 4px;
    left: 4px;
    padding: 2px 6px;
    background: rgba(0,0,0,0.6);
    color: white;
    font-size: 10px;
    border-radius: 4px;
}

.drag-hint {
    font-size: 12px;
    color: var(--color-text-light);
    margin-top: 12px;
    text-align: center;
}

/* 预览区域 */
.preview-section {
    background: var(--color-bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border-light);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
}

.preview-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.preview-size {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

.preview-wrapper {
    padding: 20px;
    max-height: 500px;
    overflow: auto;
    background: repeating-conic-gradient(#f0f0f0 0% 25%, #fff 0% 50%) 50% / 20px 20px;
    display: flex;
    justify-content: center;
}

#preview-canvas {
    max-width: 100%;
    height: auto;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

/* 操作按钮 */
.action-section {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
}

.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-tertiary);
}

/* 响应式 */
@media (max-width: 900px) {
    .options-section {
        flex-direction: column;
    }

    .option-group {
        width: 100%;
    }

    .slider-group input[type="range"] {
        flex: 1;
    }

    .images-list {
        justify-content: center;
    }
}