/* public/assets/css/image/color-grading.css */

/* 1. 基础修复 */
.tool-surface, .tool-surface * { box-sizing: border-box; }

/* 2. 宏观布局 (使用 CSS Grid 强制划分左右两列，彻底解决折行遮挡问题) */
.icg-workspace {
    display: grid;
    /* 核心修复：左侧自适应剩余空间，右侧严格固定 350px 宽 */
    grid-template-columns: minmax(0, 1fr) 350px; 
    gap: 24px;
    align-items: start; /* 让左右两边高度独立，互不干涉 */
    width: 100%;
}

/* 左侧预览面板 */
.icg-preview-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
    display: flex;
    flex-direction: column;
    /* 桌面端：左侧悬浮，始终保持在视野内，且绝对不会遮挡右侧 */
    position: sticky;
    top: 24px; 
    z-index: 10;
}

/* 右侧参数面板 */
.icg-control-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 3. 左侧预览组件 */
.icg-upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: #f8fafc;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: 0.3s;
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 16px;
}
.icg-upload-area:hover { background: rgba(0,102,204,0.05); border-color: var(--primary-color); color: var(--primary-color); }
.icg-upload-area i { font-size: 2rem; margin-bottom: 8px; }

.icg-canvas-container {
    flex: 1;
    min-height: 250px;
    background: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAMUlEQVQ4T2NkYGAQYcAP3uCTZhw1gGGYhAGBZIA/nYBwhQYtZcCCQQvYhAEDBwZLAgAEEwIRx8tMlgAAAABJRU5ErkJggg==') repeat;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    margin-bottom: 16px;
}

#icgPreviewImage {
    max-width: 100%;
    max-height: 50vh; /* 限制最高不超过屏幕一半，防止图片过高 */
    object-fit: contain;
    transition: filter 0.1s ease;
}

.icg-empty-state { color: var(--text-muted); text-align: center; }
.icg-empty-state i { font-size: 3rem; margin-bottom: 12px; opacity: 0.5; }

/* 批量缩略图列表 */
.icg-batch-list {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
    margin-bottom: 16px;
}
.icg-batch-list::-webkit-scrollbar { height: 6px; }
.icg-batch-list::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }

.icg-thumb-item {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    object-fit: cover;
    border: 2px solid transparent;
    cursor: pointer;
    opacity: 0.6;
    transition: 0.2s;
    flex-shrink: 0;
}
.icg-thumb-item:hover { opacity: 0.9; }
.icg-thumb-item.active { border-color: var(--primary-color); opacity: 1; }

.icg-action-bar { display: flex; gap: 12px; }

.icg-btn-primary, .icg-btn-success {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.icg-btn-primary { background: var(--primary-color); }
.icg-btn-primary:hover:not(:disabled) { background: #0056b3; }
.icg-btn-success { background: #10b981; }
.icg-btn-success:hover:not(:disabled) { background: #059669; }
.icg-action-bar button:disabled { opacity: 0.5; cursor: not-allowed; }

/* 4. 右侧控制组件 */
.icg-panel-title {
    font-size: 1.1rem;
    color: var(--text-main);
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--border-color);
}

.icg-btn-auto {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}
.icg-btn-auto:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4); }

.icg-settings-group {
    background: var(--bg-body);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border-color);
}
.icg-group-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--border-color);
}

.icg-range-item { margin-bottom: 16px; }
.icg-range-item:last-child { margin-bottom: 0; }

.icg-range-item label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.icg-range-item label span { color: var(--primary-color); font-family: ui-monospace, monospace; }
.icg-range-item input[type="range"] { width: 100%; accent-color: var(--primary-color); cursor: pointer; }

.icg-btn-reset {
    width: 100%;
    padding: 12px;
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}
.icg-btn-reset:hover { background: #e2e8f0; }

/* 5. 暗黑模式 */
[data-theme="dark"] .icg-upload-area { background: #0f172a; border-color: #334155; }
[data-theme="dark"] .icg-settings-group { background: #0f172a; border-color: #334155; }
[data-theme="dark"] .icg-btn-reset { background: #1e293b; border-color: #334155; }
[data-theme="dark"] .icg-btn-reset:hover { background: #334155; }

/* 6. 移动端与窄屏自适应修复 */
@media (max-width: 900px) {
    .icg-workspace {
        /* 当屏幕过窄时，强制变为单列上下排布 */
        grid-template-columns: 1fr; 
    }
    
    .icg-preview-panel {
        /* 取消整个面板的吸顶，彻底解决遮挡问题 */
        position: relative;
        top: 0;
        z-index: 1;
    }
    
    /* 手机端精细化优化：让中间真实的“画布容器”单独吸顶，高度严格限制 */
    .icg-canvas-container {
        position: sticky;
        top: 10px;
        z-index: 100;
        min-height: 150px;
        height: 35vh; /* 严格限制只占屏幕高度 35%，给下面的参数流出足够空间 */
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        background-color: var(--bg-surface); /* 加实心背景防穿透 */
    }
    
    .icg-action-bar { flex-direction: column; }
}
/* ==========================================
   7. SEO 内容区域 (底部说明区)
   ========================================== */
.tool-seo-content {
    margin-top: 40px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
    color: var(--text-main);
}

.tool-seo-content h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

/* 核心特性网格 */
.seo-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.seo-feature-card {
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 12px;
    transition: 0.3s;
}

.seo-feature-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transform: translateY(-2px);
}

.seo-feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
}

.seo-feature-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

/* 分隔线 */
.seo-divider {
    border: none;
    border-top: 1px dashed var(--border-color);
    margin: 40px 0;
}

/* 教程与指南 */
.seo-guide-box {
    background: rgba(0, 102, 204, 0.03);
    border-left: 4px solid var(--primary-color);
    padding: 20px 24px;
    border-radius: 0 8px 8px 0;
}

.seo-guide-box p {
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 12px;
    line-height: 1.6;
    font-weight: 600;
}
.seo-guide-box p:last-child {
    margin-bottom: 0;
}

/* 常见问题 FAQ */
.seo-faq-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.seo-faq-item h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.seo-faq-item p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
    padding-left: 12px;
    border-left: 2px solid var(--border-color);
}

/* SEO区移动端适配 */
@media (max-width: 768px) {
    .tool-seo-content {
        padding: 24px;
        margin-top: 24px;
    }
    .seo-feature-grid {
        grid-template-columns: 1fr;
    }
}

/* SEO区暗黑模式支持 */
[data-theme="dark"] .tool-seo-content { background: var(--bg-surface); }
[data-theme="dark"] .seo-feature-card { background: #0f172a; border-color: #334155; }
[data-theme="dark"] .seo-guide-box { background: rgba(99, 102, 241, 0.05); }