@import 'theme.css';
@import 'header.css';
@import 'breadcrumb.css';
@import 'cards.css';
@import 'announcements.css';
@import 'courses.css';
@import 'about.css';
@import 'responsive.css';
@import 'slider.css';
@import 'footer.css';
@import 'course-detail.css';
@import 'announcement-detail.css';
@import 'announcement-footer.css';
@import 'announcement-list.css';
@import 'policy.css';
@import url(https://cdn.jsdelivr.net/npm/remixicon@3.5.0/fonts/remixicon.css);

/* 基础样式重置 */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        'Segoe UI',
        Roboto,
        'Helvetica Neue',
        Arial,
        sans-serif;
    line-height: 1.6;
    background-color: var(--bg-color);
    color: var(--text-color);
    zoom: 1;
    -moz-transform-origin: top left;
    -webkit-transform-origin: top left;
    transform-origin: top left;
    transition: zoom 0.1s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 页面容器 */

.page-container {
    max-width: 1400px;
    /* 增加最大宽度 */
    width: 90%;
    /* 使用百分比宽度 */
    margin: 20px auto;
    padding: 0 clamp(1rem, 5%, 2rem);
    /* 使用 clamp 自适应内边距 */
    flex: 1;
}

/* 主内容区域 */

main {
    padding-top: 35px;
    /* 导航栏高度 */
    min-height: calc(100vh - 60px);
    display: flex;
    flex-direction: column;
    align-items: center;
    /* 内容居中 */
    width: 100%;
}

/* 通用组件样式 */

.announcement-container,
.carousel,
.features {
    margin: 0rem auto;
    /* 增加上下间距 */
    width: 100%;
    max-width: 1400px;
    padding: 0 2rem;
    /* 增加左右内边距 */
}

/* 首页公告区域 */

.announcement {
    padding: 0rem 0;
    /* 增加上下内边距 */
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--feature-bg) 100%);
    position: relative;
    overflow: hidden;
}

/* 图片通用样式 */

img {
    max-width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* 清除浮动 */

.clearfix::after {
    content: '';
    display: table;
    clear: both;
}

/* 基础间距 */

section {
    margin: 4rem auto;
    width: 100%;
    max-width: 1400px;
    padding: 0 clamp(1rem, 5%, 2rem);
}

/* 响应式布局 */

@media screen and (max-width: 1400px) {
    .page-container {
        width: 95%;
    }
}

@media screen and (max-width: 1024px) {
    section {
        margin: 3rem auto;
    }
}

@media screen and (max-width: 768px) {
    .page-container {
        width: 100%;
        padding: 0 0rem;
    }
    section {
        margin: 2rem auto;
        padding: 0 1rem;
    }
}

/* 现代化滚动条样式 */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

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

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

/* 文本选择样式 */

::selection {
    background: var(--primary-color);
    color: white;
}

/* 平滑过渡效果 */

.smooth-transition {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 内容容器通用样式 */

.content-wrapper {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 clamp(1rem, 5%, 2rem);
}

/* 响应式间距 */

.section-spacing {
    padding: clamp(2rem, 5vw, 4rem) 0;
}

/* 禁用浏览器默认的缩放提示 */

@media screen and (-webkit-min-device-pixel-ratio: 0) {
    body {
        -webkit-text-size-adjust: none;
        -moz-text-size-adjust: none;
        -ms-text-size-adjust: none;
        text-size-adjust: none;
    }
}

/* 响应式调整 */

@media screen and (max-width: 1200px) {
    .announcement-container,
    .carousel,
    .features {
        margin: 0rem auto;
        padding: 0 1.5rem;
    }
    .announcement {
        padding: 0rem 0;
    }
}

@media screen and (max-width: 768px) {
    .announcement-container,
    .carousel,
    .features {
        margin: 2rem auto;
        padding: 0 1rem;
    }
    .announcement {
        padding: 4rem 0;
    }
}

/* 缩放提示样式 */

.zoom-hint {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--surface-color);
    padding: 8px 16px;
    border-radius: 4px;
    box-shadow: var(--shadow-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
}

.zoom-hint.show {
    opacity: 1;
    transform: translateY(0);
}