/* 主要樣式文件 */

/* 自定義變數 */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
}

/* 全域樣式 */
body {
    font-family: 'Microsoft JhengHei', 'PingFang TC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
}

/* 導航欄樣式 */
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

/* 卡片樣式 */
.card {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

/* 按鈕樣式 */
.btn {
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.2s ease-in-out;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
}

/* 表單樣式 */
.form-control {
    border-radius: 0.5rem;
    border: 1px solid #dee2e6;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* 上傳區域樣式 */
.upload-area {
    border: 2px dashed #dee2e6;
    border-radius: 1rem;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s ease-in-out;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: rgba(13, 110, 253, 0.05);
}

.upload-area.dragover {
    border-color: var(--success-color);
    background-color: rgba(25, 135, 84, 0.05);
}

/* OCR 結果樣式 */
.ocr-result {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.confidence-bar {
    height: 8px;
    background-color: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    background: linear-gradient(90deg, #dc3545 0%, #ffc107 50%, #198754 100%);
    transition: width 0.3s ease-in-out;
}

/* 辨識介面樣式 */
.correction-interface {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    min-height: 500px;
}

.original-text, .corrected-text {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0.5rem;
    padding: 1rem;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .correction-interface {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .jumbotron {
        padding: 2rem 1rem !important;
    }
    
    .display-4 {
        font-size: 2rem;
    }
}

/* 載入動畫 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 工具提示樣式 */
.tooltip {
    font-size: 0.875rem;
}

/* 自定義滾動條 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}