/* === 1. 变量隔离：只作用于 ocr-container 内部，防止污染其他页面 === */
.ocr-container {
    --ocr-primary: #2196F3;
    --ocr-success: #4CAF50;
    --ocr-error: #f44336;
    --ocr-bg: #fff;
    --ocr-panel: #f8f9fa;
    --ocr-border: #e0e0e0;
    --ocr-text: #333;
    
    /* 容器基础样式 */
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    background: var(--ocr-bg);
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.05);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--ocr-text);
}

/* 深色模式适配：通过父级类名或属性选择 */
[data-theme="dark"] .ocr-container {
    --ocr-bg: #1e1e1e;
    --ocr-panel: #2d2d2d;
    --ocr-border: #444;
    --ocr-text: #e0e0e0;
}

/* === 2. 拖拽上传区 (修复居中问题 & 调整间距) === */
.ocr-dropzone-box {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 0 1rem;       /* 减小内边距 */
    min-height: 100px;   /* 减小高度 */
    
    /* 核心居中代码 */
    display: flex;
    flex-direction: column; /* 纵向排列 */
    justify-content: center; /* 垂直居中 */
    align-items: center;     /* 水平居中 */
    
    text-align: center;
    transition: all 0.3s ease;
    background: var(--ocr-panel);
    cursor: pointer;
    position: relative;
    color: #666;
    overflow: hidden;
}

.ocr-dropzone-box:hover,
.ocr-dropzone-box.dragover {
    border-color: var(--ocr-primary);
    background: rgba(33, 150, 243, 0.05);
}

.ocr-dropzone-box.dragover::before {
    content: "释放以上传图片";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(33, 150, 243, 0.1);
    color: var(--ocr-primary);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    backdrop-filter: blur(2px);
}

/* 文字间距微调 */


/* === 3. 结果展示区 (类名加前缀) === */
.ocr-result-card {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 8px;
    background: var(--ocr-panel);
    display: none;
    border: 1px solid var(--ocr-border);
}

.ocr-result-title {
    margin: 0 0 1rem;
    color: var(--ocr-primary);
    font-size: 1.2rem;
    font-weight: bold;
}

.ocr-latex-output {
    font-size: 1.4rem;
    padding: 1rem;
    background: var(--ocr-bg);
    border-radius: 4px;
    text-align: center;
    overflow-x: auto;
    color: var(--ocr-text);
    border: 1px solid var(--ocr-border);
}

.ocr-info-row {
    margin-top: 5px; /* 紧凑间距 */
    color: #888;
    font-size: 0.9rem;
    display: flex;
    gap: 15px; /* 让置信度和调用次数在一行或紧挨着 */
}

/* === 4. Loading 动画 (类名加前缀) === */
.ocr-loading-mask {
    display: none;
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: #333;
    z-index: 20;
}
[data-theme="dark"] .ocr-loading-mask {
    background: rgba(30, 30, 30, 0.9);
    color: #eee;
}

.ocr-placeholder p,
.ocr-loading-mask p {
    margin: 0 !important;
    padding: 0;
    line-height: 1; /* 收紧行高，确保与内部 font 元素或文字的物理高度一致 */
}

.ocr-spinner {
    width: 30px;
    height: 30px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--ocr-primary);
    border-radius: 50%;
    animation: ocr-spin 1s linear infinite;
    margin-bottom: 12px !important;
}
[data-theme="dark"] .ocr-spinner {
    border-color: #444;
    border-top-color: var(--ocr-primary);
}

@keyframes ocr-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* === 5. 错误提示 === */
.ocr-error-msg {
    color: var(--ocr-error);
    padding: 10px;
    margin-top: 15px;
    border-radius: 4px;
    background: rgba(244, 67, 54, 0.1);
    display: none;
    border: 1px solid rgba(244, 67, 54, 0.2);
    font-size: 0.9rem;
}

/* === 6. 源码区 === */
.ocr-source-card {
    margin-top: 15px;
    border: 1px solid var(--ocr-border);
    border-radius: 8px;
    overflow: hidden;
}

.ocr-source-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 15px;
    background: rgba(0,0,0,0.03);
    border-bottom: 1px solid var(--ocr-border);
}

.ocr-latex-raw {
    padding: 10px;
    margin: 0;
    background: var(--ocr-bg);
    font-family: 'Courier New', monospace;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 150px;
    overflow-y: auto;
    color: var(--ocr-text);
    font-size: 0.85rem;
}

/* === 7. 复制按钮 (类名加前缀) === */
.ocr-copy-btn {
    background: var(--ocr-primary);
    color: white;
    border: none;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 0.8rem;
}

.ocr-copy-btn:hover { filter: brightness(1.1); }
.ocr-copy-btn.copied { background: var(--ocr-success); }