/* ========================================
   布局样式
   ======================================== */

/* === 容器 === */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* === 顶部标题 === */
header {
    text-align: center;
    padding: 40px 20px;
    margin-bottom: 30px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 20px;
    border: 1px solid rgba(102, 126, 234, 0.3);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    font-weight: 700;
    text-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
}

.subtitle {
    color: #a8b2d1;
    font-size: 1.1rem;
}

@media (max-width: 1024px) {
    .container {
        padding: 16px;
    }
    
    header {
        padding: 32px 18px;
    }
}

/* === 标签页 === */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid rgba(102, 126, 234, 0.2);
    flex-wrap: wrap;
}

.tab-button {
    padding: 15px 30px;
    background: rgba(15, 12, 41, 0.6);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-bottom: none;
    color: #a8b2d1;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    border-radius: 10px 10px 0 0;
    position: relative;
}

.tab-button:hover {
    background: rgba(102, 126, 234, 0.2);
    color: #e0e6ed;
    transform: translateY(-2px);
}

.tab-button.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3) 0%, rgba(118, 75, 162, 0.3) 100%);
    color: #fff;
    border-color: #667eea;
    box-shadow: 0 -4px 20px rgba(102, 126, 234, 0.4);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

/* === 标签页内容 === */
.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

/* === 子标签页样式 === */
.sub-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 25px;
    flex-wrap: wrap;
    background: rgba(15, 12, 41, 0.5);
    padding: 10px;
    border-radius: 12px;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.sub-tab-button {
    padding: 10px 20px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(102, 126, 234, 0.3);
    color: #a8b2d1;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border-radius: 8px;
    flex: 1;
    min-width: 150px;
}

.sub-tab-button:hover {
    background: rgba(102, 126, 234, 0.2);
    color: #e0e6ed;
    border-color: #667eea;
    transform: translateY(-1px);
}

.sub-tab-button.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.4) 0%, rgba(118, 75, 162, 0.4) 100%);
    color: #fff;
    border-color: #667eea;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.strategy-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.strategy-content.active {
    display: block;
}

/* === 结果区域 === */
.results {
    display: none;
}

.results.show {
    display: block;
}

/* === 响应式设计 === */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-button {
        border-radius: 10px;
        border: 1px solid rgba(102, 126, 234, 0.3);
    }
    
    .sub-tabs {
        flex-direction: column;
    }
    
    .sub-tab-button {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 12px;
    }
    
    header {
        padding: 26px 14px;
    }
    
    .tabs {
        gap: 6px;
    }
    
    .tab-button {
        padding: 12px 18px;
        font-size: 0.95rem;
    }
}