/* ============================================
   LIT学习平台 - 全站搜索样式
   ============================================ */

/* 搜索覆盖层 */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 9999;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 80px;
    animation: fadeIn 0.2s ease;
}

.search-overlay.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 搜索框容器 */
.search-container {
    width: 90%;
    max-width: 640px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* 搜索输入区 */
.search-input-wrap {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid #e2e8f0;
    gap: 12px;
}

.search-input-wrap i {
    font-size: 20px;
    color: #94a3b8;
}

#searchInput {
    flex: 1;
    border: none;
    outline: none;
    font-size: 16px;
    color: #1e293b;
    background: transparent;
    font-family: inherit;
}

#searchInput::placeholder {
    color: #94a3b8;
}

.search-shortcut {
    font-size: 12px;
    color: #94a3b8;
    background: #f1f5f9;
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid #e2e8f0;
}

/* 搜索结果区 */
.search-results {
    max-height: 420px;
    overflow-y: auto;
    padding: 8px;
}

.search-results::-webkit-scrollbar {
    width: 6px;
}

.search-results::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

/* 搜索结果项 */
.search-result-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
    color: inherit;
}

.search-result-item:hover {
    background: #f1f5f9;
}

.search-result-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.search-result-icon.doc { background: #dbeafe; color: #2563eb; }
.search-result-icon.video { background: #fce7f3; color: #db2777; }
.search-result-icon.quiz { background: #fef3c7; color: #d97706; }
.search-result-icon.ethics { background: #d1fae5; color: #059669; }

.search-result-content {
    flex: 1;
    min-width: 0;
}

.search-result-title {
    font-size: 14px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-result-snippet {
    font-size: 12px;
    color: #64748b;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.search-result-badge {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
    background: #f1f5f9;
    color: #64748b;
    flex-shrink: 0;
    margin-top: 2px;
}

/* 搜索空状态 */
.search-empty {
    text-align: center;
    padding: 40px 20px;
    color: #94a3b8;
}

.search-empty i {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.search-empty p {
    font-size: 14px;
}

/* 搜索快捷键提示 */
.search-footer {
    padding: 10px 20px;
    border-top: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: #94a3b8;
}

.search-footer-keys {
    display: flex;
    gap: 8px;
}

.search-footer-keys kbd {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
}

/* 页面内搜索按钮 */
.nav-search-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    background: #fff;
    color: #64748b;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 14px;
}

.nav-search-btn:hover {
    background: #f1f5f9;
    color: #2563eb;
    border-color: #bfdbfe;
}

/* 高亮搜索关键词 */
.search-highlight {
    background: #fef08a;
    color: #1e293b;
    padding: 0 2px;
    border-radius: 2px;
}