/* --- 搜索动画和历史记录样式 --- */

/* 核心滚动锁定方案 */
html.search-active body {
    position: fixed;
    left: 0;
    right: 0;
}

/* 隐藏浏览器默认的搜索取消按钮 */
input[type="search"]::-webkit-search-cancel-button {
    -webkit-appearance: none;
    display: none;
}

/* 自定义清空按钮样式 */
.clear-search-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--light-text-color);
    font-size: 16px;
    cursor: pointer;
    padding: 5px;
    display: none; /* 默认隐藏 */
    opacity: 0.7;
    transition: opacity 0.2s, transform 0.2s;
}

.clear-search-btn:hover {
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
}


/* 遮罩层 */
.search-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0s 0.4s;
}

/* 历史记录容器 */
.search-history-container {
    position: fixed;
    top: 78px;
    left: 15px;
    right: 15px;
    width: auto;
    background-color: var(--secondary-bg);
    border-radius: 12px;
    padding: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    z-index: 999;
    box-sizing: border-box;
    opacity: 0;
    visibility: hidden;
    transform-origin: top center;
    transform: translateY(-20px) scale(0.95);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.23, 1, 0.32, 1), visibility 0s 0.4s;
    min-height: 100px;
}

.search-history-container h3 { margin-top: 0; margin-bottom: 15px; color: var(--light-text-color); font-size: 16px; padding-bottom: 10px; border-bottom: 1px solid var(--border-color); }
.search-history-container ul { list-style: none; padding: 0; margin: 0; }
.search-history-container li a { display: block; padding: 8px 5px; color: var(--text-color); text-decoration: none; border-radius: 5px; transition: background-color 0.2s ease; }
.search-history-container li a:hover { background-color: rgba(255, 255, 255, 0.1); }

/* ★★★ 新增：为“无搜索历史”提示文本添加样式 ★★★ */
.search-history-container .no-history-prompt {
    color: var(--light-text-color);
    text-align: center;
    padding: 20px 0;
    font-size: 14px;
    pointer-events: none; /* 禁止点击 */
}


/* 动画核心 */
html.search-active .search-overlay,
html.search-active .search-history-container {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}
html.search-active .search-overlay { transition: opacity 0.4s ease; }
html.search-active .search-history-container { transform: translateY(0) scale(1); transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.23, 1, 0.32, 1); }


/* 手机端样式 */
@media (max-width: 991px) {
    html.search-active .top-bar .user-avatar { transform: translateX(-60px); opacity: 0; pointer-events: none; }
    html.search-active .top-bar .side-menu-toggle { transform: translateX(60px); opacity: 0; pointer-events: none; }
    html.search-active .search-bar { position: absolute; left: 15px; top: 15px; width: calc(100% - 30px); max-width: none; z-index: 1002; }
    .top-bar .user-avatar,
    .top-bar .side-menu-toggle { transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1), opacity 0.3s ease; }
}

/* 电脑端样式 */
@media (min-width: 992px) {
    .search-overlay { display: none; }
    .search-history-container { left: auto; right: auto; width: 400px; top: 78px; }
}