/* 基础样式和布局 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #000000;
    color: #ffffff;
    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: 40px;
    padding: 30px 0;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.1rem;
    color: #a0a0a0;
    font-weight: 300;
}

/* 主要内容区域 */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* 卡片通用样式 */
section {
    background: linear-gradient(135deg, #1e1e2e, #2a2a3e);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid #333;
}

section h2, section h3 {
    margin-bottom: 20px;
    color: #ffffff;
    font-weight: 600;
}

section h2 {
    font-size: 1.8rem;
}

section h3 {
    font-size: 1.4rem;
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, #4ecdc4, #44a08d);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #3db0a7, #3a8a7a);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(78, 205, 196, 0.3);
}

.btn-secondary {
    background: linear-gradient(45deg, #6c757d, #5a6268);
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(45deg, #5a6268, #495057);
    transform: translateY(-2px);
}

.btn-preset {
    background: linear-gradient(45deg, #ff6b6b, #ee5a52);
    color: white;
    margin: 5px;
}

.btn-preset:hover {
    background: linear-gradient(45deg, #ee5a52, #dc3545);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
}

.btn-preset.active {
    background: linear-gradient(45deg, #28a745, #20c997);
    box-shadow: 0 0 20px rgba(40, 167, 69, 0.5);
}

/* 火炮卡片样式 */
.cannon-card {
    background: linear-gradient(135deg, #2a2a3e, #3a3a4e);
    border: 1px solid #444;
    border-radius: 10px;
    padding: 20px;
    margin: 10px 0;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.cannon-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--cannon-color, #4ecdc4);
}

.cannon-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    border-color: var(--cannon-color, #4ecdc4);
}

.cannon-card.hidden {
    opacity: 0.4;
    background: linear-gradient(135deg, #1a1a2a, #2a2a3a);
}

.cannon-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #ffffff;
}

.cannon-params {
    color: #a0a0a0;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.cannon-author {
    color: #4ecdc4;
    font-size: 0.85rem;
    font-weight: 500;
}

/* 作者分组样式 */
.author-group {
    margin-bottom: 30px;
}

.author-header {
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    color: #000;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-weight: 600;
    font-size: 1.1rem;
}

/* 图例样式 */
.legend-item {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    margin: 5px 0;
    background: linear-gradient(135deg, #2a2a3e, #3a3a4e);
    border-radius: 8px;
    border-left: 4px solid var(--cannon-color);
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    margin-right: 15px;
    background: var(--cannon-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.legend-info {
    flex: 1;
}

.legend-name {
    font-weight: 600;
    margin-bottom: 3px;
}

.legend-params {
    font-size: 0.85rem;
    color: #a0a0a0;
}

/* 页脚样式 */
.footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border-radius: 10px;
    color: #a0a0a0;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    section {
        padding: 20px;
    }
    
    .chart-controls {
        flex-direction: column;
        gap: 10px;
    }
    
    .control-group {
        grid-template-columns: 1fr;
    }
    
    .preset-buttons {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .btn-preset {
        flex: 1;
        min-width: 120px;
        margin: 0;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.8rem;
    }
    
    section {
        padding: 15px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 13px;
    }
}