/* 基础样式 */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #34495e;
    --text-color: #333;
    --border-radius: 4px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 标题样式 */
header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

h2 {
    color: var(--dark-color);
    margin-bottom: 20px;
}

h3 {
    color: var(--dark-color);
    margin-bottom: 15px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
}

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

.btn.primary:hover {
    background-color: #2980b9;
}

.btn.secondary {
    background-color: var(--light-color);
    color: var(--dark-color);
}

.btn.secondary:hover {
    background-color: #ddd;
}

.btn-link {
    background: none;
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    text-decoration: underline;
    padding: 0;
    font: inherit;
}

.btn-link:hover {
    color: #2980b9;
}

/* 表单样式 */
.upload-section {
    max-width: 600px;
    margin: 0 auto;
    padding: 30px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.file-upload {
    margin-bottom: 20px;
}

.file-upload label {
    display: block;
    padding: 10px 15px;
    background-color: var(--light-color);
    color: var(--dark-color);
    text-align: center;
    border-radius: var(--border-radius);
    cursor: pointer;
    margin-bottom: 10px;
}

.file-upload input {
    display: none;
}

#file-names {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}

.or-divider {
    text-align: center;
    margin: 20px 0;
    position: relative;
}

.or-divider:before, .or-divider:after {
    content: "";
    display: block;
    width: 40%;
    height: 1px;
    background: #ddd;
    position: absolute;
    top: 50%;
}

.or-divider:before {
    left: 0;
}

.or-divider:after {
    right: 0;
}

.or-divider span {
    background: white;
    padding: 0 10px;
    position: relative;
    z-index: 1;
}

/* 预览页面样式 */
.file-preview {
    background: white;
    padding: 20px;
    margin-bottom: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.field-selection {
    margin-bottom: 30px;
}

.select-actions {
    margin-bottom: 15px;
}

.field-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 10px;
}

.field-checkbox {
    display: flex;
    align-items: center;
}

.field-checkbox input {
    margin-right: 8px;
}

.data-preview {
    overflow: auto;
}

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background-color: var(--light-color);
    position: sticky;
    top: 0;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

.actions {
    margin-top: 30px;
    display: flex;
    justify-content: space-between;
}

/* 分析页面样式 */
.analysis-prep {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.summary {
    margin-bottom: 30px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
}

.ai-form {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
}

.lap-times-container {
    display: grid;
    gap: 10px;
}

.lap-time-entry {
    display: grid;
    grid-template-columns: 1fr 150px;
    gap: 10px;
    align-items: center;
}

/* 手风琴样式 */
.accordion-item {
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
}

.accordion-header {
    padding: 10px 15px;
    background-color: #f8f9fa;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-header:hover {
    background-color: #f0f0f0;
}

.accordion-content {
    padding: 0 15px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

/* 底部样式 */
footer {
    text-align: center;
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    color: #666;
}

/* 添加结果页面的样式 */
.result-content {
    background-color: #fff;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    line-height: 1.8;
    margin-bottom: 30px;
}

.result-content h1, 
.result-content h2, 
.result-content h3, 
.result-content h4 {
    color: var(--primary-color);
    margin-top: 20px;
    margin-bottom: 10px;
}

.result-content ul, 
.result-content ol {
    margin-left: 20px;
    margin-bottom: 15px;
}

.error-message {
    background-color: #ffecec;
    border-left: 4px solid var(--accent-color);
    padding: 15px;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
}

/* 折叠/展开功能样式 */
.collapse {
    display: none;
    overflow: hidden;
    transition: all 0.3s ease;
}

.collapse.show {
    display: block;
}

/* 可选：添加平滑的高度过渡效果 */
.collapse.collapsing {
    position: relative;
    height: 0;
    overflow: hidden;
    transition: height 0.35s ease;
}

@media print {
    header, footer, .actions {
        display: none;
    }
    
    body {
        padding: 0;
        margin: 0;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .result-content {
        box-shadow: none;
        padding: 0;
    }
}