/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

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

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

main {
    display: grid;
    gap: 30px;
}

section {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

h2 {
    color: #4a5568;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e2e8f0;
}

/* 表单样式 */
.input-section form {
    display: grid;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: bold;
    margin-bottom: 5px;
    color: #4a5568;
}

.form-group input {
    padding: 12px;
    border: 1px solid #cbd5e0;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

button {
    padding: 12px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* 图表区域 */
.chart-section {
    min-height: 450px;
}

#dataChart {
    width: 100% !important;
    height: 350px !important;
}

.chart-controls {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.chart-controls label {
    font-weight: bold;
    color: #4a5568;
}

.chart-controls select {
    padding: 8px 12px;
    border: 1px solid #cbd5e0;
    border-radius: 5px;
    font-size: 1rem;
    background-color: white;
    cursor: pointer;
}

.chart-controls select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}



/* 批量输入文本框 */
#bulkInput {
    padding: 12px;
    border: 1px solid #cbd5e0;
    border-radius: 5px;
    font-size: 1rem;
    min-height: 100px;
    resize: vertical;
}

#bulkInput:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#analyzeTextBtn {
    background: linear-gradient(135deg, #FF9800 0%, #F57C00 100%);
    align-self: flex-start;
    margin-top: 10px;
}

#analyzeTextBtn:hover {
    background: linear-gradient(135deg, #FB8C00 0%, #EF6C00 100%);
}

/* 数据表格 */
.data-table-section {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

th {
    background-color: #f8fafc;
    font-weight: bold;
    color: #4a5568;
}

tr:hover {
    background-color: #f8fafc;
}

.delete-btn {
    background: #e53e3e;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
}

.delete-btn:hover {
    background: #c53030;
    transform: none;
    box-shadow: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    header p {
        font-size: 1rem;
    }
    
    section {
        padding: 15px;
    }
    
    .input-section form {
        gap: 15px;
    }
}