/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.3rem;
    color: #666;
    font-weight: 300;
}

/* 数据输入面板样式 */
.data-input-panel {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.data-input-panel h3 {
    margin-bottom: 20px;
    color: #2c3e50;
    text-align: center;
}

.input-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    align-items: end;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 500;
    color: #2c3e50;
}

.input-group input,
.input-group select {
    padding: 10px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: #4a69bd;
}

.import-btn,
.custom-data-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, #00b894, #00a085);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.import-btn:hover,
.custom-data-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 184, 148, 0.4);
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 15px;
    width: 80%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #000;
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin: 20px 0;
}

.data-input-section textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    resize: vertical;
}

.data-example pre {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #4a69bd;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
}

.modal-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 20px;
}

.apply-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, #00b894, #00a085);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
}

.reset-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, #e17055, #d63031);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
}

.apply-btn:hover,
.reset-btn:hover {
    transform: translateY(-2px);
}

/* 导航样式 */
.chart-nav {
    margin-bottom: 30px;
}

.nav-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.nav-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.nav-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.nav-btn.active {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    box-shadow: 0 4px 15px rgba(238, 90, 36, 0.4);
}

/* 主要内容区域 */
.main-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.chart-section {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.chart-title {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: #2c3e50;
    text-align: center;
}

.chart-description {
    text-align: center;
    color: #666;
    margin-bottom: 25px;
    font-size: 1.1rem;
    line-height: 1.6;
}

.chart {
    height: 600px;
    width: 100%;
    border-radius: 10px;
    overflow: hidden;
}

/* 数据面板样式 */
.data-panel {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    align-self: start;
}

.panel-title {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
    text-align: center;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 10px;
}

.insights-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.insight-card {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #4a69bd;
    transition: transform 0.3s ease;
}

.insight-card:hover {
    transform: translateX(5px);
}

.insight-card h4 {
    margin-bottom: 10px;
    color: #4a69bd;
    font-size: 1.1rem;
}

.insight-card p {
    color: #555;
    line-height: 1.5;
}

/* 页脚样式 */
footer {
    text-align: center;
    padding: 25px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    color: #666;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .modal-body {
        grid-template-columns: 1fr;
    }
    
    .chart {
        height: 500px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    .input-controls {
        grid-template-columns: 1fr;
    }
    
    .nav-container {
        padding: 15px;
    }
    
    .nav-btn {
        padding: 10px 18px;
        font-size: 0.9rem;
    }
    
    .chart-section {
        padding: 20px;
    }
    
    .chart {
        height: 400px;
    }
    
    .chart-title {
        font-size: 1.5rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .nav-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    
    .chart {
        height: 350px;
    }
    
    .modal-actions {
        flex-direction: column;
    }
}