/* 自定义样式 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

/* 导航栏样式 */
.navbar {
    transition: all 0.3s ease;
}

.navbar-scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 1s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 卡片悬停效果 */
.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* 按钮样式 */
.btn-primary {
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: scale(1.05);
}

/* 图片遮罩效果 */
.image-overlay {
    position: relative;
    overflow: hidden;
}

.image-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.5));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.image-overlay:hover::before {
    opacity: 1;
}

/* 响应式图片 */
.responsive-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* 表单样式 */
.form-input {
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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