.tech-tree-layout {
    display: flex;
    gap: 30px;
    min-height: calc(100vh - 180px);
    padding: 0 20px;
    background: linear-gradient(135deg, #1a1f2c 0%, #2c3e50 100%);
}

.tech-tree-container {
    flex: 1;
    background: rgba(26, 32, 44, 0.9);
    color: #fff;
    padding: 30px;
    margin: 20px 0;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 0;
}

/* 标题和控制按钮区域 */
.tech-tree-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tech-tree-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: #fff;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.tech-tree-controls {
    display: flex;
    gap: 12px;
}

.tech-tree-controls button {
    background: rgba(52, 152, 219, 0.1);
    color: #3498db;
    border: 1px solid rgba(52, 152, 219, 0.3);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tech-tree-controls button:hover {
    background: rgba(52, 152, 219, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.2);
}

/* 树形图容器 */
.tech-tree {
    width: 100%;
    height: calc(100vh - 300px);
    position: relative;
    overflow: hidden;
}

.tech-tree svg {
    width: 100%;
    height: 100%;
}

/* 节点样式 */
.node {
    cursor: pointer;
    transition: all 0.3s ease;
}

.node rect {
    fill: rgba(44, 62, 80, 0.9);
    stroke: #3498db;
    stroke-width: 2px;
    rx: 8px;
    ry: 8px;
    transition: all 0.3s ease;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.node:hover rect {
    fill: rgba(52, 152, 219, 0.2);
    stroke: #2ecc71;
    transform: scale(1.05);
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.2));
}

.node text {
    fill: #fff;
    font-size: 14px;
    font-weight: 500;
    pointer-events: none;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 连接线样式 */
.link {
    fill: none;
    stroke: rgba(52, 152, 219, 0.4);
    stroke-width: 2px;
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.node:hover + .link,
.link:hover {
    stroke: rgba(46, 204, 113, 0.8);
    stroke-width: 3px;
    filter: drop-shadow(0 4px 8px rgba(46, 204, 113, 0.2));
}

/* 右侧详情面板 */
.detail-panel {
    width: 400px;
    margin: 20px 0;
    background: rgba(26, 32, 44, 0.9);
    border-radius: 16px;
    color: #fff;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.detail-content {
    position: sticky;
    top: 20px;
    padding: 30px;
}

.detail-header {
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 20px;
}

.detail-header h2 {
    margin: 0;
    color: #3498db;
    font-size: 1.5em;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.detail-body {
    overflow-y: auto;
    max-height: calc(100vh - 300px);
    padding-right: 10px;
}

.detail-body::-webkit-scrollbar {
    width: 6px;
}

.detail-body::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.detail-body::-webkit-scrollbar-thumb {
    background: rgba(52, 152, 219, 0.5);
    border-radius: 3px;
}

.info-section {
    margin-bottom: 25px;
    animation: fadeIn 0.3s ease;
}

.info-section h3 {
    color: #3498db;
    margin-bottom: 15px;
    font-size: 1.2em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-section h3::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 16px;
    background: #3498db;
    border-radius: 2px;
}

.info-section p {
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 15px;
}

.info-section ul {
    list-style-type: none;
    padding: 0;
}

.info-section li {
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
    color: rgba(255, 255, 255, 0.9);
    transition: all 0.3s ease;
}

.info-section li:before {
    content: "•";
    color: #3498db;
    position: absolute;
    left: 8px;
    font-size: 1.2em;
}

.info-section li:hover {
    transform: translateX(5px);
    color: #fff;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 节点状态样式 */
.node.active rect {
    fill: rgba(46, 204, 113, 0.2);
    stroke: #2ecc71;
    stroke-width: 3px;
    filter: drop-shadow(0 8px 16px rgba(46, 204, 113, 0.3));
}

.node.completed rect {
    stroke: #2ecc71;
}

.node.locked rect {
    stroke: #e74c3c;
    fill: rgba(231, 76, 60, 0.1);
}

/* 响应式布局 */
@media (max-width: 1200px) {
    .tech-tree-layout {
        flex-direction: column;
    }
    
    .detail-panel {
        width: 100%;
    }
}

/* 主内容区域 */
.main-content {
    min-height: calc(100vh - 140px); /* 减去header和footer的高度 */
    padding: 20px 0;
    background: linear-gradient(135deg, #1a1f2c 0%, #2c3e50 100%);
}

/* 确保container样式正确 */
.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 提示框样式 */
.tooltip {
    position: absolute;
    background-color: rgba(44, 62, 80, 0.9);
    color: #fff;
    padding: 10px;
    border-radius: 4px;
    font-size: 14px;
    pointer-events: none;
    z-index: 1000;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
}

.modal-content {
    position: relative;
    background-color: #2c3e50;
    margin: 5% auto;
    padding: 0;
    width: 70%;
    max-width: 800px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    color: #fff;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #34495e;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    color: #3498db;
}

.close {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #fff;
}

.modal-body {
    padding: 20px;
    max-height: 70vh;
    overflow-y: auto;
}