:root {
    /* Light Mode (Default) */
    --bg-color-main: #f8fafc;
    --bg-gradient: radial-gradient(circle at top right, hsl(200, 20%, 95%), hsl(200, 20%, 90%));
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    --text-color: #1e293b;
    --input-bg: rgba(0, 0, 0, 0.05);
    --button-bg: rgba(0, 0, 0, 0.1);
    --button-hover-bg: rgba(0, 0, 0, 0.45);
    --accent-color: hsl(200, 83%, 23%);
    --button-text: #ffffff;
    --placeholder-color: rgba(0, 0, 0, 0.4);
    --svg-fill: #1e293b;
    --result-hover-bg: rgba(0, 0, 0, 0.03);
    --tabs-border-color: #dfe1e5;
}

body.dark {
    /* Dark Mode */
    --bg-color-main: #0f172a;
    --bg-gradient: radial-gradient(circle at top right, hsl(230, 40%, 15%), hsl(230, 40%, 10%));
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.25);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --text-color: #ffffff;
    --input-bg: rgba(0, 0, 0, 0.2);
    --button-bg: rgba(255, 255, 255, 0.2);
    --button-hover-bg: rgba(255, 255, 255, 0.6);
    --accent-color: hsl(200, 100%, 75%);
    --button-text: #0f172a;
    --placeholder-color: rgba(255, 255, 255, 0.5);
    --svg-fill: #ffffff;
    --result-hover-bg: rgba(255, 255, 255, 0.05);
    --tabs-border-color: rgba(255, 255, 255, 0.1);
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: var(--bg-color-main);
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    transition: background 0.5s ease, color 0.5s ease;
}

body::before {
    content: "";
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, hsla(200, 80%, 60%, 0.1) 0%, transparent 50%),
                radial-gradient(circle at center, hsla(280, 70%, 50%, 0.1) 0%, transparent 60%);
    z-index: -1;
    pointer-events: none;
    animation: gradientMove 20s infinite alternate linear;
    display: none; /* Only show in dark mode for better performance/look */
}

body.dark::before {
    display: block;
}

@keyframes gradientMove {
    from { transform: translate(0, 0) rotate(0deg); }
    to { transform: translate(5%, 5%) rotate(10deg); }
}

body * {
    box-sizing: border-box;
}

.toper {
    width: 100%;
    height: 70px;
}

.searchcenter {
    width: calc(90% - 20px);
    margin: 15px auto;
    color: var(--text-color);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 25px 20px;
    box-shadow: var(--glass-shadow);
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.searchcenter:hover {
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.3);
}

.searchcenter-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.4;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
}

.search-form {
    display: flex;
    align-items: center;
    background: var(--input-bg);
    border-radius: 12px;
    padding: 6px;
    flex: 1;
    max-width: 600px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.search-form:focus-within {
    background: var(--glass-bg);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px hsla(200, 80%, 60%, 0.2);
}

.search-form svg {
    width: 24px;
    height: 24px;
    margin: 0 10px;
    opacity: 0.7;
    flex-shrink: 0;
}

.search-form svg path {
    fill: var(--svg-fill);
}

.search-form-input {
    flex: 1;
    min-width: 0; /* 關鍵：防止輸入框撐開 Flex 容器 */
    height: 40px;
    font-size: 16px;
    background-color: transparent;
    border: none;
    outline: none;
    color: var(--text-color);
    padding: 0 5px;
}

.search-form-input::placeholder {
    color: var(--placeholder-color);
}

.search-form-button {
    height: 40px;
    padding: 0 24px;
    font-size: 15px;
    font-weight: 700;
    background: var(--accent-color);
    border: none;
    outline: none;
    color: var(--button-text);
    border-radius: 8px;
    cursor: pointer;
    flex-shrink: 0; /* 防止按鈕被壓縮 */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.search-form-button:hover {
    background: var(--button-hover-bg);
    transform: scale(1.02);
}

.search-form-button:active {
    transform: scale(0.98);
}

/* Results section */
.results-container {
    flex-direction: column;
    align-items: flex-start;
}

.results-title {
    margin-bottom: 0;
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

#google-results {
    width: 100%;
    color: #ffffff;
}

/* Customize Google Search Results to match theme if possible */
.gsc-control-cse {
    background-color: transparent !important;
    border: none !important;
    padding: 0 !important;
}

.gsc-webResult.gsc-result {
    background-color: transparent !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
    padding: 15px 10px !important;
    transition: all 0.3s ease;
}

.gsc-webResult-divider {
    height: 0 !important;
    background-color: transparent !important;
}

.gs-title, .gs-title * {
    color: var(--accent-color) !important;
    text-decoration: none !important;
}

.gs-snippet {
    color: var(--text-color) !important;
    opacity: 0.8;
}

/* 覆蓋 Google 搜尋引擎預設樣式 */
.gsc-control-cse {
    background-color: transparent !important;
    border: none !important;
}

.gsc-tabsArea {
    margin-top: 0 !important;
    border-bottom: 1px solid var(--tabs-border-color) !important;
}

.gsc-tabHeader.gsc-tabhActive {
    border-bottom: 3px solid var(--accent-color) !important;
    color: var(--accent-color) !important;
    background-color: transparent !important;
}

.gsc-tabHeader.gsc-tabhInactive {
    color: var(--text-color) !important;
    opacity: 0.6;
    background-color: transparent !important;
}

.gsc-webResult.gsc-result {
    background-color: transparent !important;
    border: none !important;
}

.gsc-webResult.gsc-result:hover {
    border-color: var(--glass-border) !important;
    background-color: var(--result-hover-bg) !important;
}

/* 搜尋框輸入區域 */
.gsc-input-box {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 8px !important;
    overflow: hidden;
}

.gsc-input-box td {
    background-color: transparent !important;
}

input.gsc-input {
    background-color: transparent !important;
    color: var(--text-color) !important;
    font-size: 16px !important;
}

.gsc-search-button-v2 {
    background-color: var(--button-bg) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 8px !important;
    padding: 6px 15px !important;
    transition: all 0.3s ease !important;
}

.gsc-search-button-v2:hover {
    background-color: var(--button-hover-bg) !important;
}

.gsc-search-button-v2 svg {
    fill: var(--svg-fill) !important;
}

/* 結果資訊與標題 */
.gsc-result-info {
    color: var(--text-color) !important;
    opacity: 0.7;
}

.gs-spelling, .gs-result .gs-title, .gs-result .gs-title * {
    color: var(--accent-color) !important;
    text-decoration: none !important;
}

.gs-snippet {
    color: var(--text-color) !important;
    opacity: 0.8 !important;
}

.gs-promotion .gs-visibleUrl, .gs-webResult .gs-visibleUrl {
    color: var(--accent-color) !important;
    opacity: 0.7;
}

/* --- 分頁控制 (一般頁碼列表) --- */
.gsc-results .gsc-cursor-box {
    border: none !important;
    background-color: transparent !important;
    margin: 20px 0 !important;
    width: 100% !important;
}

.gsc-results .gsc-cursor {
    display: flex !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 8px !important;
    padding: 0 !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

.gsc-results .gsc-cursor-page {
    text-decoration: none !important;
    color: var(--text-color) !important;
    background-color: var(--button-bg) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 8px !important;
    padding: 8px 14px !important;
    margin: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    min-width: 40px !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
}

.gsc-results .gsc-cursor-page:hover {
    background-color: var(--button-hover-bg) !important;
    transform: translateY(-2px) !important;
}

.gsc-results .gsc-cursor-current-page {
    color: var(--button-text) !important;
    background-color: var(--accent-color) !important;
    border-color: var(--accent-color) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
}

/* --- 進階按鈕樣式 (單一「繼續」按鈕) --- */
/* 當 .gsc-cursor 內部含有「下一頁」或「頁碼文字」相關元素時，轉化為大按鈕樣式 */
.gsc-results .gsc-cursor:has(.gsc-cursor-next-page),
.gsc-results .gsc-cursor:has(.gsc-cursor-numbered-page),
.gsc-results .gsc-cursor:has(.gsc-cursor-container-next),
.gsc-results .gsc-cursor:has(.gsc-cursor-container-previous) {
    margin: 25px 10px !important;
    padding: 14px 28px !important;
    background: var(--accent-color) !important;
    color: var(--button-text) !important;
    border-radius: 14px !important;
    font-weight: 700 !important;
    font-size: 16px !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.gsc-results .gsc-cursor:has(.gsc-cursor-next-page):hover,
.gsc-results .gsc-cursor:has(.gsc-cursor-numbered-page):hover,
.gsc-results .gsc-cursor:has(.gsc-cursor-container-next):hover,
.gsc-results .gsc-cursor:has(.gsc-cursor-container-previous):hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25) !important;
    filter: brightness(1.1) !important;
}

.gsc-results .gsc-cursor:has(.gsc-cursor-next-page):active,
.gsc-results .gsc-cursor:has(.gsc-cursor-numbered-page):active,
.gsc-results .gsc-cursor:has(.gsc-cursor-container-next):active,
.gsc-results .gsc-cursor:has(.gsc-cursor-container-previous):active {
    transform: translateY(0) !important;
}

/* 確保按鈕內容繼承顏色並清除預設樣式 */
.gsc-results .gsc-cursor-next-page,
.gsc-results .gsc-cursor-numbered-page,
.gsc-results .gsc-cursor-container-next,
.gsc-results .gsc-cursor-container-previous {
    color: inherit !important;
    text-decoration: none !important;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex !important;
    align-items: center !important;
}

.gsc-results .gsc-cursor-container-previous {
    margin-right: 10px !important;
}

.gsc-results .gsc-cursor-container-next {
    margin-left: 10px !important;
}

.gsc-results .gsc-cursor-chevron {
    fill: currentColor !important;
    width: 14px !important;
    height: 14px !important;
    display: block !important;
}

.gcsc-find-more-on-google, .gcsc-find-more-on-google-magnifier {
    color: var(--accent-color) !important;
    fill: var(--accent-color) !important;
}

/* 品牌標誌 */
.gcsc-branding-text, .gcsc-branding-clickable {
    color: var(--text-color) !important;
    opacity: 0.6;
}

.gscb_a {
    color: var(--text-color) !important;
}

.gsc-resultsroot-wrapper, .gsc-control-cse {
    padding: 0 !important;
}
@media screen and (max-width: 850px) {
    .searchcenter {
        flex-direction: column;
        align-items: stretch;
        width: 95%;
        padding: 20px;
    }

    .searchcenter-title {
        text-align: center;
        white-space: normal;
        font-size: 18px;
    }

    .search-form {
        max-width: 100%;
    }

    .searchcenter:hover {
        transform: none;
    }
}

@media screen and (max-width: 480px) {
    .searchcenter {
        padding: 20px 15px;
    }

    .searchcenter-title {
        font-size: 16px;
    }
    
    .search-form-button {
        padding: 0 15px;
    }
}

@media screen and (max-width: 360px) {
    .searchcenter {
        padding: 15px 12px;
    }

    .search-form {
        padding: 4px;
    }

    .search-form svg {
        margin: 0 6px;
        width: 20px;
        height: 20px;
    }

    .search-form-input {
        font-size: 15px;
    }

    .search-form-button {
        padding: 0 12px;
        font-size: 14px;
        height: 36px;
    }
}