/* =====================
   Magic Pixel - Image to Pixel
   图片转像素功能页样式
   ===================== */

/* ===== Card Section ===== */
.card-section {
    padding: 1.25rem 1.5rem;
}

.card-section:last-child {
    border-bottom: none;
}

.card-section__title {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--pixel-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 1rem;
}

/* ===== Upload Zone in Card ===== */
.card-section .upload-zone {
    border-color: var(--pixel-border);
    background: #FFFDF5;
}

.card-section .upload-zone:hover {
    border-color: var(--pixel-primary);
    background: rgba(255, 107, 53, 0.02);
}

/* ===== Control Group in Card ===== */
.card-section .control-group__input {
    background: #FFFDF5;
    border-color: var(--pixel-border);
}

.card-section .control-group__input:focus {
    border-color: var(--pixel-primary);
}

/* ===== Radio Group in Card ===== */
.card-section .radio-label input[type="radio"] {
    accent-color: var(--pixel-primary);
}

/* ===== Button Group in Card ===== */
.card-section .btn-group {
    margin-top: 1rem;
}

/* ===== 网格大小输入 ===== */
.grid-size-inputs,
.output-size-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.grid-size-inputs .control-group__input,
.output-size-inputs .control-group__input {
    flex: 1;
    text-align: center;
}

.input-separator {
    color: var(--pixel-text-muted);
    font-weight: 700;
    font-size: 1rem;
}

/* ===== 网格检测结果 ===== */
.grid-detection-result {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(122, 155, 107, 0.1);
    border-radius: var(--pixel-radius-md);
    border: 2px solid rgba(122, 155, 107, 0.3);
}

.detection-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--pixel-text-secondary);
}

.detection-value {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--pixel-success);
}

.detection-confidence {
    font-size: 0.75rem;
    color: var(--pixel-text-muted);
    margin-left: auto;
}

/* ===== 复选框样式 ===== */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pixel-text-primary);
}

.checkbox-wrapper input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--pixel-primary);
    cursor: pointer;
}

/* ===== 输出尺寸信息 ===== */
.output-size-info {
    font-size: 0.8125rem;
    color: var(--pixel-text-secondary);
    padding: 0.5rem 0;
    font-weight: 600;
}

/* ===== 颜色数量按钮 ===== */
.color-count-btns {
    display: flex;
    gap: 0.5rem;
}

.color-count-btn {
    flex: 1;
    padding: 0.5rem 0.75rem;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--pixel-text-secondary);
    background: var(--pixel-card-bg);
    border: 2px solid var(--pixel-border);
    border-radius: var(--pixel-radius-md);
    cursor: pointer;
    transition: all var(--pixel-transition);
}

.color-count-btn:hover {
    border-color: var(--pixel-primary);
    color: var(--pixel-primary);
}

.color-count-btn.active {
    background: var(--pixel-primary);
    color: white;
    border-color: var(--pixel-primary-dark);
}

/* ===== 缩放按钮 ===== */
.scale-btns {
    display: flex;
    gap: 0.5rem;
}

.scale-btn {
    flex: 1;
    padding: 0.5rem 0.75rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--pixel-text-secondary);
    background: var(--pixel-card-bg);
    border: 2px solid var(--pixel-border);
    border-radius: var(--pixel-radius-md);
    cursor: pointer;
    transition: all var(--pixel-transition);
}

.scale-btn:hover {
    border-color: var(--pixel-primary);
    color: var(--pixel-primary);
}

.scale-btn.active {
    background: var(--pixel-primary);
    color: white;
    border-color: var(--pixel-primary-dark);
}

/* ===== 像素化结果区域 ===== */
.pixel-section {
    background: var(--pixel-card-bg);
    border-radius: var(--pixel-card-radius);
    padding: 1.25rem;
    box-shadow: var(--pixel-card-shadow);
    border: 4px solid transparent;
    position: relative;
}

.pixel-section::before {
    content: '';
    position: absolute;
    inset: 8px;
    border: 3px dashed var(--pixel-card-border-dashed);
    border-radius: calc(var(--pixel-card-radius) - 8px);
    pointer-events: none;
    z-index: 1;
}

/* ===== 像素图占位符 ===== */
.pixel-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: var(--pixel-text-muted);
    padding: 3rem;
}

.pixel-placeholder svg {
    width: 64px;
    height: 64px;
    opacity: 0.5;
}

.pixel-placeholder p {
    font-size: 0.875rem;
    font-weight: 600;
}

/* ===== 视图切换 ===== */
.view-toggle {
    display: flex;
    gap: 0.25rem;
    margin-left: 1rem;
    background: var(--pixel-bg-panel);
    border-radius: var(--pixel-radius-md);
    padding: 0.25rem;
    border: 2px solid var(--pixel-border);
}

.view-toggle__btn {
    padding: 0.375rem 0.75rem;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--pixel-text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--pixel-radius-sm);
    cursor: pointer;
    transition: all var(--pixel-transition);
}

.view-toggle__btn:hover {
    color: var(--pixel-primary);
}

.view-toggle__btn.active {
    background: var(--pixel-primary);
    color: white;
}

/* ===== 像素预览容器 ===== */
.pixel-preview-container {
    border: 3px solid var(--pixel-border);
    border-radius: var(--pixel-radius-lg);
    min-height: 300px;
    max-height: 600px;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    position: relative;
    /* 棋盘格背景 - 显示透明区域 */
    background-image:
        linear-gradient(45deg, #e0d6ca 25%, transparent 25%),
        linear-gradient(-45deg, #e0d6ca 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e0d6ca 75%),
        linear-gradient(-45deg, transparent 75%, #e0d6ca 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
    background-color: var(--pixel-card-bg);
}

.pixel-preview-wrapper {
    display: inline-block;
    background: transparent;
}

.pixel-preview-wrapper canvas {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    display: block;
}

/* ===== Canvas 自适应缩放 ===== */
.preview-container--zoomable {
    min-height: 300px;
    max-height: 600px;
}

.preview-container--zoomable canvas,
.pixel-preview-container canvas {
    transform-origin: center center;
    transition: transform 0.1s ease;
}

/* ===== 对比视图 ===== */
.compare-view {
    display: none;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--pixel-card-bg);
    border: 3px solid var(--pixel-border);
    border-radius: var(--pixel-radius-lg);
    align-items: center;
    justify-content: center;
    overflow: auto;
    /* 棋盘格背景 */
    background-image:
        linear-gradient(45deg, #e0d6ca 25%, transparent 25%),
        linear-gradient(-45deg, #e0d6ca 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e0d6ca 75%),
        linear-gradient(-45deg, transparent 75%, #e0d6ca 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}

.compare-view.active {
    display: flex;
}

.compare-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.compare-label {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--pixel-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--pixel-bg-panel);
    padding: 0.25rem 0.75rem;
    border-radius: var(--pixel-radius-full);
    border: 2px solid var(--pixel-border);
}

.compare-item canvas {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    border: 2px solid var(--pixel-border);
    border-radius: var(--pixel-radius-sm);
    background: transparent;
}

.compare-arrow {
    color: var(--pixel-text-muted);
    flex-shrink: 0;
}

.compare-arrow svg {
    width: 24px;
    height: 24px;
}

/* ===== 调色板预览 ===== */
.palette-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding: 0.75rem;
    background: var(--pixel-bg-panel);
    border-radius: var(--pixel-radius-md);
    border: 2px solid var(--pixel-border);
    margin-top: 0.5rem;
}

.palette-color {
    width: 20px;
    height: 20px;
    border-radius: 2px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform var(--pixel-transition);
}

.palette-color:hover {
    transform: scale(1.2);
    z-index: 1;
}

/* ===== 自定义调色板编辑器 ===== */
.custom-palette-editor {
    display: none;
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--pixel-bg-panel);
    border-radius: var(--pixel-radius-md);
    border: 2px solid var(--pixel-border);
    margin-top: 0.5rem;
}

.custom-palette-editor.active {
    display: flex;
}

.custom-palette-colors {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.custom-color-item {
    position: relative;
    width: 28px;
    height: 28px;
}

.custom-color-item input[type="color"] {
    width: 100%;
    height: 100%;
    padding: 0;
    border: 2px solid var(--pixel-border);
    border-radius: var(--pixel-radius-sm);
    cursor: pointer;
}

.custom-color-remove {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 16px;
    height: 16px;
    background: var(--pixel-error);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 10px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.add-color-btn {
    width: 28px;
    height: 28px;
    background: var(--pixel-card-bg);
    border: 2px dashed var(--pixel-border);
    border-radius: var(--pixel-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pixel-text-muted);
    font-size: 1.25rem;
    transition: all var(--pixel-transition);
}

.add-color-btn:hover {
    border-color: var(--pixel-primary);
    color: var(--pixel-primary);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .color-count-btns,
    .scale-btns {
        flex-wrap: wrap;
    }

    .color-count-btn,
    .scale-btn {
        flex: 1 1 calc(50% - 0.25rem);
    }
}

@media (max-width: 768px) {
    .compare-view {
        flex-direction: column;
    }

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