:root {
    --primary: #7C3AED; /* 主色调：紫色 */
    --primary-light: #A78BFA; /* 浅紫色 */
    --primary-dark: #6D28D9; /* 深紫色 */
}

body {
    font-family: 'Inter', sans-serif;
}

/* 导航栏滚动效果 */
#navbar {
    transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

#navbar.scrolled {
    background-color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    padding-top: 1rem;
    padding-bottom: 1rem;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 动画效果 */
.animate-fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 图片悬停效果 */
.img-hover-zoom {
    overflow: hidden;
}

.img-hover-zoom img {
    transition: transform 0.5s ease;
}

.img-hover-zoom:hover img {
    transform: scale(1.1);
}

/* 按钮效果 */
.btn-primary {
    background-color: var(--primary);
    color: white;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: white;
    color: var(--primary);
    border: 2px solid var(--primary);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: var(--primary-light);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* 加载动画 */
.loader {
    border: 5px solid #f3f3f3;
    border-radius: 50%;
    border-top: 5px solid var(--primary);
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}