:root {
    /* 默认浅色模式颜色 */
    --primary-color: #6750A4;
    --on-primary-color: #FFFFFF;
    --primary-container-color: #EADDFF;
    --on-primary-container-color: #21005D;
    --background-color: #FFFBFE;
    --on-background-color: #1C1B1F;
    --surface-color: #FFFBFE;
    --surface-container-low-color: #F7F2FA;
    --on-surface-color: #1C1B1F;
    --on-surface-variant-color: #49454F;
}

.dark-mode {
    /* 深色模式颜色 */
    --primary-color: #D0BCFF;
    --on-primary-color: #381E72;
    --primary-container-color: #4F378B;
    --on-primary-container-color: #EADDFF;
    --background-color: #1C1B1F;
    --on-background-color: #E6E1E5;
    --surface-color: #1C1B1F;
    --surface-container-low-color: #28252C;
    --on-surface-color: #E6E1E5;
    --on-surface-variant-color: #CAC4D0;
}

body {
    font-family: 'Roboto', sans-serif;
    transition: background-color 0.3s, color 0.3s;
    background-color: var(--background-color);
    color: var(--on-background-color);
    position: relative;
    /* 允许垂直滚动并防止水平滚动 */
    overflow-y: auto;
    overflow-x: hidden;
}

/* 动态背景容器 */
.dynamic-background {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    filter: blur(120px); /* 增加模糊度使效果更柔和 */
    overflow: hidden;
}

.dynamic-circle {
    position: absolute;
    border-radius: 50%;
    animation: moveColors 25s infinite ease-in-out; /* 缩短动画周期使运动更明显 */
    opacity: 0.8;
    pointer-events: none;
    transform-origin: center center;
    /* 添加额外的视觉效果 */
    mix-blend-mode: screen; /* 使用屏幕混合模式增强视觉效果 */
}

/* 动画关键帧 */
@keyframes moveColors {
    0% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(20vw, 15vh) scale(1.3); } /* 增加移动距离和缩放变化 */
    50% { transform: translate(-20vw, -15vh) scale(1.2); }
    75% { transform: translate(15vw, -20vh) scale(1.4); }
    100% { transform: translate(0, 0) scale(1); }
}

/* 弹窗样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.modal-content {
    padding: 2rem;
    border-radius: 2rem;
    background-color: var(--surface-container-low-color);
    color: var(--on-surface-color);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    max-width: 90%;
    text-align: center;
    line-height: 1.5;
    font-size: clamp(1rem, 5vw, 1.5rem);
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.hidden {

    display: none;

}



#top-container {

    width: 100%;

    display: flex;

    justify-content: space-between;

    padding: 1rem;

    position: fixed;

    top: 0;

    left: 0;

    z-index: 40;

}



#time-container {
    background-color: var(--surface-container-low-color);
    color: var(--on-surface-color);
    padding: 0.5rem;
    border-radius: 9999px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-size: 0.9rem;
    text-align: center;
    background: var(--surface-container-low-color) / 0.9;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* 快速链接菜单 - 宽屏显示 */
.quick-links-menu {
    display: none;
    padding: 0.5rem 1rem;
    gap: 1rem;
    align-items: center;
    position: relative;
}

.quick-link {
    color: var(--on-surface-color);
    text-decoration: none;
    font-size: 0.95rem;
    padding: 0.5rem 0.75rem;
    border-radius: 9999px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.quick-link:hover {
    background-color: var(--primary-container-color);
    color: var(--on-primary-container-color);
}

/* 桌面屏幕（lg）显示菜单 */
@media (min-width: 1024px) {
    .quick-links-menu {
        display: flex;
    }
    
    #menu-toggle {
        display: none !important;
    }
}

/* 移动屏幕菜单动画 */
@media (max-width: 1023px) {
    .quick-links-menu {
        position: fixed;
        top: 3.5rem;
        right: 1rem;
        width: auto;
        max-width: 280px;
        flex-direction: column;
        gap: 0.5rem;
        padding: 0.75rem;
        border-radius: 1rem;
        display: none;
        opacity: 0;
        transform: scale(0.85) translateY(-10px);
        pointer-events: none;
        transition: all 0.3s ease cubic-bezier(0.16, 1, 0.3, 1);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }
    
    .quick-links-menu.open {
        display: flex;
        opacity: 1;
        transform: scale(1) translateY(0);
        pointer-events: auto;
    }
    
    .quick-link {
        width: 100%;
        text-align: center;
        padding: 0.75rem;
        border-radius: 0.5rem;
    }
}

/* ==================== 搜索表单 - 窄屏响应式 ==================== */
/* 窄屏模式：增加搜索框的高度/厚度 */
@media (max-width: 767px) {
    .search-form input {
        padding-top: clamp(0.75rem, 4vw, 1.5rem) !important;
        padding-bottom: clamp(0.75rem, 4vw, 1.5rem) !important;
        font-size: clamp(1rem, 4vw, 1.1rem);
    }
}

/* 宽屏模式：保持原有逻辑 */
@media (min-width: 768px) {
    .search-form input {
        padding-top: 0.75rem;
        padding-bottom: 0.75rem;
    }
}

/* ==================== 圆形图标网格 ==================== */
/* 外层包装容器 - 完全由内容决定，不受屏幕边缘影响 */
.icon-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem;
    margin-top: 2rem;
    background-color: var(--surface-container-low-color) / 0.9;
    border-radius: 2.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    justify-content: center;
    align-items: center;
    width: 100%;
}

/* 图标容器 - 内部布局 */
.icon-grid {
    display: contents;
}

/* 单个图标链接 - 圆形按钮 */
.icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    /* 固定大小 60px */
    width: 60px;
    height: 60px;
    border-radius: 50%;
    /* 图标颜色配置 - 修改此处改变颜色 */
    /* 初始颜色：红色 (#EF4444) - 加强遮罩 */
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.8), rgba(239, 68, 68, 0.7));
    color: #FFFFFF;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
    flex-shrink: 0;
}

/* 图标悬停效果 */
.icon-link:hover {
    /* 悬停时颜色加深 - 修改此处改变悬停颜色 */
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.95), rgba(239, 68, 68, 0.9));
    transform: scale(1.1);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

/* 图标文本 - 便于修改 */
.icon-text {
    display: block;
}