/* 基础样式重置 */
:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --primary-light: #edf2ff;
    --secondary: #f8f9fa;
    --success: #4cc9f0;
    --success-light: #e3f8ff;
    --danger: #f72585;
    --danger-light: #ffebf3;
    --warning: #ffd166;
    --warning-light: #fff8e6;
    --dark: #212529;
    --light: #f8f9fa;
    --gray: #6c757d;
    --light-gray: #e9ecef;
    --border-radius: 0.75rem;
    --box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: #f5f7fb;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 导航栏 */
.navbar {
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, var(--primary), #3a0ca3);
    padding: 0.8rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    color: white !important;
}

.navbar-brand i {
    margin-right: 8px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 0.5rem;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: white !important;
    background-color: rgba(255, 255, 255, 0.15);
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    flex: 1;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    margin-bottom: 1.5rem;
    background-color: #fff;
    overflow: hidden;
}

.card:hover {
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.12);
    transform: translateY(-5px);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1.25rem 1.5rem;
    font-weight: 600;
}

/* 按钮样式 */
.btn {
    border-radius: 50px;
    padding: 0.5rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #3a0ca3);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), #2a0880);
    transform: translateY(-3px);
    box-shadow: 0 0.5rem 1rem rgba(67, 97, 238, 0.3);
}

.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline-primary:hover {
    background-color: var(--primary-light);
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
}

/* 表单样式 */
.form-control {
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid #dee2e6;
    transition: var(--transition);
    font-size: 1rem;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(67, 97, 238, 0.15);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

/* 平台选择按钮 */
.btn-check:checked + .btn {
    background-color: rgba(67, 97, 238, 0.1);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(67, 97, 238, 0.15);
    transform: translateY(-2px);
}

/* 查询结果卡片 */
.result-card {
    border-left: 4px solid var(--primary);
    background-color: var(--primary-light);
}

/* 风险等级颜色 */
.bg-success { 
    background-color: var(--success) !important; 
    color: white !important;
}
.bg-warning { 
    background-color: var(--warning) !important; 
    color: #333 !important;
}
.bg-danger { 
    background-color: var(--danger) !important; 
    color: white !important;
}

/* 进度条 */
.progress {
    border-radius: 10px;
    background-color: var(--light-gray);
    height: 12px;
}

.progress-bar {
    border-radius: 10px;
}

/* 头像 */
.avatar {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary), #3a0ca3);
    color: white;
    border-radius: 50%;
    margin: 0 auto;
}

/* 列表组 */
.list-group-item {
    border: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1.25rem;
    transition: var(--transition);
    border-radius: 0.5rem !important;
    margin-bottom: 0.5rem;
}

.list-group-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.list-group-item:hover {
    background-color: rgba(67, 97, 238, 0.05);
    transform: translateX(5px);
}

/* 页脚 */
footer {
    background-color: #fff;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    margin-top: auto;
    padding: 2rem 0 1rem;
}

footer h5 {
    position: relative;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

footer h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
}

footer ul li {
    margin-bottom: 0.75rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar-collapse {
        margin-top: 1rem;
        padding: 1rem;
        background-color: white;
        border-radius: 0.5rem;
        box-shadow: var(--box-shadow);
    }
    
    .btn-outline-primary {
        padding: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* 加载动画 */
.loading-spinner {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 2rem;
    color: var(--gray);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #dee2e6;
}

/* 风险指示器 */
.risk-indicator {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.85rem;
}

/* 打印优化 */
@media print {
    .navbar, footer, .btn {
        display: none !important;
    }
    
    body {
        background-color: white;
        padding: 20px;
    }
    
    .result-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}