/* 自定义样式区 */
html,
body {
    overscroll-behavior: none;
}

html {
    scroll-behavior: smooth;
}

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

/* 美化滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #e2e8f0;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

html.dark ::-webkit-scrollbar-track {
    background: #1f2937;
}

html.dark ::-webkit-scrollbar-thumb {
    background: #4b5563;
}

html.dark ::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}

/* 激活的导航链接 */
.sidebar-link.active {
    background-color: #1e40af;
    color: white;
    font-weight: 600;
}

html.dark .sidebar-link.active {
    background-color: #3b82f6;
}

/* 主页大图背景 */
.hero-bg {
    background-image: linear-gradient(to right, rgba(30, 58, 138, 0.8), rgba(67, 56, 202, 0.7)), url('https://placehold.co/1200x600/e0e7ff/3730a3?text=JOU+Campus');
    background-size: cover;
    background-position: center;
}

/* 内容区块 */
.content-section {
    padding-top: 4rem;
    padding-bottom: 4rem;
    border-bottom: 1px dashed #e2e8f0;
}

html.dark .content-section {
    border-bottom-color: #374151;
}

.content-section:last-child {
    border-bottom: none;
}

/* 可折叠导航菜单 */
.submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-in-out, opacity 0.3s ease-in-out;
    opacity: 0;
}

.submenu.open {
    max-height: 1000px;
    opacity: 1;
}

.category-header .accordion-icon {
    transition: transform 0.3s ease-in-out;
}

.category-header.open .accordion-icon {
    transform: rotate(180deg);
}

/* 视图过渡效果 */
#detail-view {
    transition: transform 0.3s ease-in-out;
}

/* 搜索结果高亮 */
.search-highlight {
    background-color: #fef9c3;
    /* yellow-100 */
    color: #713f12;
    /* amber-800 */
    border-radius: 3px;
}

/* 临时高亮动画 */
@keyframes highlight-fade {
    from {
        background-color: #fde047;
    }

    /* yellow-400 */
    to {
        background-color: transparent;
    }
}

.temp-highlight {
    animation: highlight-fade 2s ease-in-out;
}

/* 加载动画 */
.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

html.dark .loader {
    border-color: #4b5563;
    border-top-color: #3b82f6;
}

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

    100% {
        transform: rotate(360deg);
    }
}

/* --- 图片轮播器样式 --- */
.image-slider .slider-wrapper {
    transition: transform 0.5s ease-in-out;
}

.image-slider .slider-slide {
    flex-shrink: 0;
    width: 100%;
    aspect-ratio: 16 / 9;
    /* 保持图片比例 */
}

.image-slider .slider-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-slider .slider-nav {
    background-color: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

.image-slider .slider-nav:hover {
    background-color: rgba(0, 0, 0, 0.6);
    transform: scale(1.1);
}

.image-slider .slider-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

.image-slider .slider-dots .dot.active {
    background-color: white;
    transform: scale(1.2);
}

.slider-caption {
    transition: opacity 0.5s ease-in-out;
}

/* --- 社团选项卡样式 --- */
.club-tabs .tab-button {
    transition: all 0.3s ease-in-out;
    border-bottom: 3px solid transparent;
}

.club-tabs .tab-button.active {
    font-weight: 600;
    color: #2563eb;
    /* blue-600 */
    border-bottom-color: #2563eb;
}

html.dark .club-tabs .tab-button.active {
    color: #3b82f6;
    /* blue-500 */
    border-bottom-color: #3b82f6;
}

.club-pane {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.club-pane.active {
    display: block;
    /* 修改：从 grid 改为 block */
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- 实时搜索下拉框样式 --- */
#live-search-results {
    top: 100%;
    z-index: 100;
    max-height: 400px;
    overflow-y: auto;
}

/* --- 移动端底部导航栏 --- */
#bottom-nav {
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

#bottom-nav .nav-btn.active {
    color: #2563eb;
    /* blue-600 */
}

html.dark #bottom-nav .nav-btn.active {
    color: #3b82f6;
    /* blue-500 */
}

/* --- 移动端搜索遮罩层 --- */
#mobile-search-overlay {
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
}

/* 新增: 校区查询工具的自定义下拉菜单样式 */
.custom-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* 新增: 登录/注册 模态框的选项卡样式 */
.auth-tab.active {
    border-color: #4f46e5;
    /* indigo-600 */
    color: #4f46e5;
    /* indigo-600 */
}

html.dark .auth-tab.active {
    border-color: #6366f1;
    /* indigo-500 */
    color: #818cf8;
    /* indigo-400 */
}

/* 新增: 用户中心头像选择 */
.avatar-option {
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s ease-in-out;
    border-radius: 50%;
}

.avatar-option:hover {
    transform: scale(1.1);
    border-color: #6366f1;
}

.avatar-option.selected {
    border-color: #4338ca;
    /* indigo-700 */
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.5);
}

/* [已修复] 删除不再使用的样式 */
.loader-small {
    border: 2px solid #f3f3f3;
    border-top: 2px solid #4f46e5;
    border-radius: 50%;
    width: 16px;
    height: 16px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 8px;
}

/* --- 新增: Toast 消息提示框样式 --- */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.toast-notification {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    color: white;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.4s ease-in-out;
    min-width: 250px;
}

.toast-notification.show {
    opacity: 1;
    transform: translateX(0);
}

.toast-notification.info {
    background-color: #3b82f6;
}

/* blue-500 */
.toast-notification.success {
    background-color: #22c55e;
}

/* green-500 */
.toast-notification.error {
    background-color: #ef4444;
}

/* red-500 */
.toast-notification .toast-icon {
    margin-right: 12px;
}