:root {
    --white-10: rgba(255, 255, 255, 0.1);
    --white-20: rgba(255, 255, 255, 0.2);
    --white-30: rgba(255, 255, 255, 0.3);
    --white-50: rgba(255, 255, 255, 0.5);
    --white-15: rgba(255, 255, 255, 0.15);
    --red-accent: #ff4b4b;
    --gap-sm: 8px;
    --gap-md: 16px;
    --gap-lg: 24px;
    --radius-md: 8px;
    --transition: all 0.3s ease;
}

/* ==================== 搜索框样式 ==================== */
.search-container {
    margin: var(--gap-lg) auto;
    width: 100%;
    max-width: 700px;
    min-width: 300px;
    display: flex;
    justify-content: center;
    position: relative;
}

.search-box {
    width: 100%;
    position: relative;
}

#search-input {
    width: 100%;
    min-width: 260px;
    height: 54px;
    padding: 0 var(--gap-md) 0 110px;
    background: var(--white-10);
    backdrop-filter: blur(10px);
    border: 1px solid var(--white-20);
    border-radius: 44px;
    color: white;
    font-size: 16px;
    outline: none;
    transition: var(--transition);
    box-sizing: border-box;
}

#search-input:focus {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(0, 0, 0, 0.5);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

/* ==================== 左侧搜索引擎选择器 ==================== */
.search-actions {
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 6px;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    padding: 4px 8px;
    border-radius: 60px;
    backdrop-filter: blur(4px);
    z-index: 10;
}

.engine-selector {
    background: transparent;
    border: none;
    color: white;
    font-size: 14px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--white-15);
    transition: var(--transition);
}

.engine-selector:hover {
    background: var(--white-30);
}

/* 菜单左对齐 */
.engine-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(16px);
    border-radius: 20px;
    border: 1px solid var(--white-20);
    min-width: 140px;
    z-index: 2000;
    display: none;
    overflow: hidden;
}

.engine-menu.show {
    display: block;
}

.engine-option {
    padding: 12px 18px;
    color: white;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--white-10);
}

.engine-option:last-child {
    border-bottom: none;
}

.engine-option:hover {
    background: var(--white-20);
}

.engine-option.active {
    background: var(--white-30);
    font-weight: 500;
}

/* ==================== 搜索结果样式 ==================== */
.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 12px;
    width: 100%;
    max-height: 420px;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(20px);
    border: 1px solid var(--white-20);
    border-radius: 20px;
    overflow-y: auto;
    z-index: 1500;
    display: none;
    box-shadow: 0 20px 35px rgba(0, 0, 0, 0.5);
}

.search-results.show {
    display: block;
}

.search-result-group {
    padding: 12px 18px 4px;
}

.search-group-title {
    color: var(--white-30);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1px;
}

.search-result-item {
    padding: 12px 18px;
    border-bottom: 1px solid var(--white-10);
    cursor: pointer;
    transition: var(--transition);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: var(--white-10);
}

.search-result-item a {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 14px;
}

.search-result-item img {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    object-fit: cover;
}

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

.search-result-info h3 {
    margin: 0 0 4px 0;
    font-size: 15px;
    font-weight: 500;
    text-align: left;
}

.search-result-info p {
    margin: 0;
    color: var(--white-50);
    font-size: 12px;
    line-height: 1.4;
    text-align: left;
}

.search-category {
    color: var(--white-30);
    font-size: 11px;
}

.search-no-results {
    padding: 28px;
    text-align: center;
    color: var(--white-50);
}

/* 文章搜索结果样式 */
.search-result-article {
    border-bottom: 1px solid var(--white-10);
}

.search-result-article a {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
}

.search-result-article .search-result-info h3 {
    font-size: 14px;
    font-weight: 500;
    margin: 0 0 6px 0;
    color: #ffffff;
    line-height: 1.4;
}

.search-result-article .search-result-info p {
    font-size: 12px;
    color: #666;
    line-height: 1.5;
    margin: 0 0 6px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.search-result-meta {
    display: flex;
    gap: 12px;
    font-size: 11px;
    color: #999;
}

.search-result-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.search-highlight {
    background-color: #8fc774;
    color: #333;
    padding: 0 2px;
    border-radius: 2px;
    font-weight: 500;
}

.search-loading {
    text-align: center;
    padding: 20px;
    color: #666;
    font-size: 13px;
}

/* ==================== 滚动条样式 ==================== */
.search-results::-webkit-scrollbar {
    width: 6px;
}

.search-results::-webkit-scrollbar-track {
    background: var(--white-10);
    border-radius: 3px;
}

.search-results::-webkit-scrollbar-thumb {
    background: var(--white-30);
    border-radius: 3px;
}

.search-results::-webkit-scrollbar-thumb:hover {
    background: var(--white-50);
}

/* ==================== 移动端适配 ==================== */
@media (max-width: 768px) {
    .search-container {
        margin: 10px auto !important;
        width: calc(100% - 32px);
        max-width: 500px;
    }
    
    #search-input {
        height: 46px;
        font-size: 14px;
        padding: 0 12px 0 100px;
    }
    
    .search-actions {
        gap: 4px;
        padding: 3px 6px;
    }
    
    .engine-selector {
        padding: 5px 10px;
        font-size: 12px;
    }
    
    /* 移动端隐藏引擎文字，只显示图标（可选） */
    .engine-selector span {
        display: none;
    }
    
    .engine-menu {
        min-width: 120px;
    }
    
    .engine-option {
        padding: 10px 14px;
        font-size: 13px;
    }
    
    .search-results {
        max-height: 350px;
        margin-top: 8px;
    }
    
    .search-result-item {
        padding: 10px 14px;
    }
    
    .search-result-item a {
        gap: 10px;
    }
    
    .search-result-info h3 {
        font-size: 13px;
    }
    
    .search-result-info p {
        font-size: 11px;
    }
    
    .search-result-article .search-result-info h3 {
        font-size: 13px;
    }
    
    .search-result-article .search-result-info p {
        font-size: 11px;
    }
    
    .search-result-meta {
        font-size: 10px;
        gap: 8px;
    }
}

/* 超小屏幕（手机竖屏） */
@media (max-width: 480px) {
    .search-container {
        width: calc(100% - 20px);
        margin: 8px auto !important;
    }
    
    #search-input {
        height: 42px;
        font-size: 13px;
        padding: 0 10px 0 80px;
    }
    
    .search-actions {
        left: 6px;
        padding: 2px 5px;
    }
    
    .engine-selector {
        padding: 4px 8px;
        font-size: 11px;
    }
    
    .engine-selector svg {
        width: 14px;
        height: 14px;
    }
    
    .search-results {
        max-height: 300px;
        border-radius: 16px;
    }
    
    .search-result-item {
        padding: 8px 12px;
    }
    
    .search-result-info h3 {
        font-size: 12px;
    }
    
    .search-group-title {
        font-size: 11px;
    }
    
    .search-no-results {
        padding: 20px;
        font-size: 13px;
    }
}