:root {
    /* 主色調：根據用戶要求 */
    --primary-color: #243D51; /* 主要color: #243D51 */
    --highlight-color: #ffff00; /* highlight color: #ffff00 */

    /* 字體顏色：根據用戶要求 */
    --main-font-color: #23396C; /* 主要font color: #23396C */
    --secondary-font-color: #999999; /* 次要font color: #999999 */
    --white-color: #ffffff; /* 通用白色 */

    /* 從原檔案中提取並統一的色彩定義 */
    --primary-color-dark: #1a2d60; /* 用於主要顏色按鈕的hover效果，取代舊的按鈕hover色和部分深藍色 */
    --primary-color-rgb: 36, 61, 81; /* 主要顏色的RGB值，用於rgba函數 */
    --main-font-color-rgb: 35, 57, 108; /* 主要字體顏色的RGB值，用於rgba函數 */

    /* 背景與邊框 */
    --background-color-light: #FAFAFA; /* 用戶原 --bg-color */
    --general-border-color: #DDDDDD; /* 通用邊框顏色，合併了原 --tab-border-color 和部分 #ddd */
    --light-grey-bg: #f9f9f9; /* 來自index.html內聯的 #f9f9f9 */
    --modal-pre-bg: #f5f5f5; /* 來自modal content pre的背景色 */

    /* 輔助藍色調 (用戶原 --secondary-color: #3A5A9A) */
    --secondary-blue-accent: #3A5A9A;
    --secondary-blue-accent-rgb: 58, 90, 154; /* RGB值，用於rgba函數 */

    /* 警告/錯誤相關顏色 */
    --error-red: #d32f2f;
    --warning-background: #f8d7da;
    --warning-text: #721c24;

    /* 禁用按鈕背景色 */
    --disabled-button-bg: #6c757d;

    /* 其他來自用戶原 project_css.css 的變數 (保持原樣或調整名稱以避免衝突) */
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 8px 20px rgba(var(--main-font-color-rgb), 0.3); /* 使用 main-font-color 的 rgba */
}

::selection {
    color: var(--highlight-color);
    background: var(--primary-color);
}

* {
    font-family: 'Noto Sans HK', sans-serif;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    color: var(--main-font-color);
    background-color: var(--background-color-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 將 body 設定為 flex 容器，使其子元素（header, main, footer）垂直堆疊 */
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh; /* 確保 body 佔滿整個視窗高度 */
}

a:link, a:visited, a:hover, a:active {
    color: var(--main-font-color);
    text-decoration: none;
}

a:hover, a:active {
    text-decoration: underline;
}

header {
    width: 100%;
    background-color: var(--primary-color);
    color: var(--white-color);
    height: 74px;
    position: relative;
    z-index: 10;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    height: 100%;
}

.site-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--white-color);
    user-select: none;
}

.site-icon {
    height: 80px;
    width: 200px;
    object-fit: contain;
    transition: var(--transition);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-button {
    background: transparent;
    color: var(--background-color-light);
    border: 2px solid var(--background-color-light);
    border-radius: 6px;
    font-weight: 700;
    font-size: 14px;
    padding: 4px 12px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    height: 36px;
}

#controlCenterButton {
    padding: 4px;
    width: 36px;
    height: 36px;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

#controlCenterButton span {
    display: none;
}

#controlCenterButton .bi {
    margin: 0;
    font-size: 1.2rem;
}

.header-button .bi {
    margin-right: 2px;
}

.header-button:hover,
.header-button:focus {
    background: var(--background-color-light);
    color: var(--main-font-color);
}

.dropdown-menu {
    position: fixed;
    top: 0;
    right: -20%;
    width: 20%;
    height: 100%;
    background-color: var(--background-color-light);
    box-shadow: var(--shadow);
    padding: 16px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: right 0.3s ease-in-out;
}

.dropdown-menu.show {
    right: 0;
}

.dropdown-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--main-font-color);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.dropdown-divider {
    border-top: 1px solid var(--general-border-color);
    margin: 8px 0;
}

.dropdown-close {
    background: none;
    border: none;
    font-size: 14px;
    color: var(--main-font-color);
    cursor: pointer;
    padding: 8px;
    transition: var(--transition);
    line-height: 1;
}

.dropdown-close:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    color: var(--main-font-color);
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s;
    border-radius: 4px;
}

.dropdown-item:hover {
    background-color: rgba(var(--main-font-color-rgb), 0.1);
    text-decoration: none;
}

/* 主內容區塊的通用樣式 */
.main-content {
    flex: 1; /* 允許 main-content 佔用剩餘空間 */
    display: flex;
    flex-direction: column;
    align-items: center; /* 讓內容在主內容區塊內水平居中 */
    padding: 32px 12px 40px;
    /* 移除 Landing Page 的特定頂部間距，由登入頁面專用樣式處理 */
    width: 100%;
    max-width: 70%;
    margin-left: auto;
    margin-right: auto;
}

.title {
    font-weight: 700;
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    text-align: center;
    margin-bottom: 1rem;
    line-height: 1.2;
    color: var(--main-font-color);
}

.typing-text {
    white-space: nowrap;
    overflow: hidden;
    color: var(--main-font-color);
    display: inline-block;
}

.typing-text::after {
    content: "|";
    width: 0.15em;
    height: 1.2em;
    color: var(--main-font-color);
    margin-left: 0.1em;
    vertical-align: text-top;
    animation: blinkCursor 0.7s steps(2) infinite;
    border-radius: 2px;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--background-color-light);
    padding: 20px;
    border-radius: 8px;
    max-width: 80%;
    width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
}

#modalContent {
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: auto;
    background: var(--modal-pre-bg);
    padding: 10px;
    border-radius: 4px;
    max-height: 50vh;
    overflow-y: auto;
    margin: 15px 0;
}

.modal-close {
    background-color: var(--primary-color); /* 統一使用 primary-color */
    color: var(--white-color);
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.modal-close:hover {
    background-color: var(--secondary-blue-accent); /* 原 --secondary-color */
    transform: translateY(-2px);
}

@keyframes blinkCursor {
    50% { opacity: 0; }
}

.timer-container {
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    font-weight: bold;
    user-select: none;
    backdrop-filter: blur(5px);
}

.time {
    line-height: 1;
    font-family: 'Archivo Black', sans-serif;
    color: var(--main-font-color);
    font-size: 24px;
    margin-bottom: 0.2rem;
    font-variant-numeric: tabular-nums;
}

.date {
    line-height: 1;
    font-family: 'Archivo Black', sans-serif;
    color: var(--secondary-font-color); /* 統一使用次要字體顏色 */
    font-size: 18px;
}

.tab-container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto 20px;
    text-align: center;
}

.tab-header {
    display: flex;
    justify-content: center;
    border-bottom: 1px solid var(--general-border-color);
    margin-bottom: 15px;
}

.tab-button {
    padding: 6px 12px;
    background: transparent;
    color: var(--main-font-color);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    margin: 0 5px;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.tab-button.active {
    background: var(--primary-color); /* 原 --tab-active-bg-color */
    color: var(--white-color);
}

.tab-content {
    display: none;
    padding: 15px;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
}

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

.search-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-input-container {
    flex: 1;
    position: relative;
}

.search-button-container {
    display: flex;
    align-items: center;
}

.search-input {
    width: 100%;
    padding: 10px 40px 10px 10px;
    font-size: clamp(0.8rem, 3vw, 0.9rem);
    border: 1px solid var(--general-border-color);
    border-radius: 0.5rem;
    outline: none;
    transition: var(--transition);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
    color: var(--main-font-color);
}

.search-input:focus {
    border-color: var(--secondary-blue-accent);
    box-shadow: 0 0 0 3px rgba(var(--secondary-blue-accent-rgb), 0.2);
}

.clear-icon {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    color: var(--secondary-font-color); /* 統一使用次要字體顏色 */
    cursor: pointer;
    display: none;
    line-height: 1;
    background: none;
    border: none;
    padding: 0;
}

.search-button, .action-button {
    padding: 0.6rem 0.8rem;
    font-size: clamp(0.85rem, 3vw, 0.95rem);
    font-weight: 600;
    color: var(--main-font-color); /* 原 --main-color */
    background-color: var(--background-color-light); /* 原 #FAFAFA */
    border: 1px solid var(--general-border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
}

.search-button.active {
    background-color: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
}

.search-button:hover, .action-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
}

.button-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
    width: 100%;
    max-width: 600px;
    margin: 0 auto 1.5rem;
}

.action-button {
    min-width: 90px;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
}

.bi {
    font-size: 1em;
    vertical-align: middle;
}

.turnstile-container {
    margin: 1.5rem 0;
    display: none;
    justify-content: center;
    width: 100%;
    min-height: 65px;
    padding-bottom: 20px;
}

footer {
    text-align: center;
    padding: 15px 0;
    font-size: 0.8rem;
    color: var(--main-font-color);
    background-color: var(--background-color-light);
    width: 100%;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

footer p {
    font-weight: bold;
    margin: 5px 0;
}

.primary_content_block {
    width: 80%;
    max-width: 600px;
    height: auto;
    max-height: 70px;
    margin: 5px auto;
}

.primary_content_block_row_01 {
    border-radius: 12px;
    background-color: var(--primary-color);
    display: grid;
    grid-template-columns: auto auto auto auto;
    padding: 2px;
}

.primary_content_block_row_01_div {
    text-align: center;
    padding: 2px;
    position: relative;
}

.primary_content_block_content {
    font-size: 14px;
    font-weight: 600;
    color: var(--white-color);
    margin: 2px;
    transition: var(--transition);
}

.primary_content_block_content .bi {
    font-size: 16px;
}

.primary_content_block_row_01_div a:hover .primary_content_block_content {
    color: var(--highlight-color);
    transform: translateY(-2px);
}

.tools-dropdown {
    position: absolute;
    bottom: calc(100% + 5px);
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    background-color: var(--background-color-light);
    border-radius: 4px;
    box-shadow: var(--shadow);
    z-index: 1000;
    display: none;
    flex-direction: column;
    padding: 8px;
}

.tools-dropdown.show {
    display: flex;
}

.tools-dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    color: var(--main-font-color);
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s;
    border-radius: 4px;
}

.tools-dropdown-item:hover {
    background-color: rgba(var(--main-font-color-rgb), 0.1);
    text-decoration: none;
}

/* 額外添加的兩種按鈕樣式，以符合您的具體要求 */
/* Solid Button */
.solid-button {
    background-color: var(--primary-color);
    color: var(--white-color);
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.solid-button:hover {
    background-color: var(--primary-color-dark);
    transform: translateY(-1px);
}

/* Outline Button */
.outline-button {
    border: 1px solid var(--primary-color);
    background-color: transparent;
    color: var(--primary-color);
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.outline-button:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
}

/* Modal for small pop-ups (already exists, but ensuring consistency) */
/* The general .modal and .modal-content are defined above,
   this is a re-inclusion of the specific modal definition from your original CSS if it was duplicated. */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--background-color-light);
    padding: 20px;
    border-radius: 8px;
    max-width: 400px; /* Specific width for this modal type */
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow);
}

.modal-content h3 {
    margin: 0 0 15px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--main-font-color);
}

.modal-content p {
    margin: 0 0 20px;
    font-size: 1rem;
    color: var(--main-font-color);
}

/* Login Page Specific Styles - 新增的 CSS 規則 (從您原始檔案保留) */
body.login-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

body.login-page .main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px 12px;
    width: 100%;
    max-width: 70%;
    margin: 0 auto;
}

#loading {
    margin-top: 0;
    margin-bottom: 20px;
}

#labButton {
    margin-top: 0;
    margin-bottom: 20px;
}

.login-container {
    width: 90%;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.login-input {
    width: 100%;
    padding: 12px;
    margin: 8px 0;
    border: 1px solid var(--primary-color); /* 原 --border-color */
    border-radius: 4px;
    font-size: 1rem;
    color: var(--main-font-color);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
}

.login-input:focus {
    border-color: var(--secondary-blue-accent);
    box-shadow: 0 0 0 3px rgba(var(--secondary-blue-accent-rgb), 0.2);
    outline: none;
}

.login-button {
    width: 100%;
    padding: 12px;
    margin: 16px 0;
    background-color: var(--main-font-color); /* 原 --main-color */
    color: var(--white-color);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: var(--shadow);
}

.login-button:hover {
    background-color: var(--secondary-blue-accent); /* 原 --secondary-color */
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
}

.error-message {
    color: var(--error-red);
    text-align: center;
    margin: 10px 0;
    display: none;
    font-size: 0.9rem;
}

/* Styles for the "進入我的實驗室" button - 保持其獨特風格 */
#labButton {
    background-color: var(--highlight-color); /* 原 --accent-color */
    color: var(--primary-color); /* 原 --header-bg */
    border: 2px solid var(--primary-color); /* 原 --header-bg */
    width: 220px;
    padding: 10px 20px;
    font-size: 1rem;
    display: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: var(--shadow);
}

#labButton:hover {
    background-color: var(--primary-color); /* 原 --header-bg */
    color: var(--highlight-color); /* 原 --accent-color */
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
}

#welcomeMessage, #labAccess {
    display: none;
    text-align: center;
    color: var(--main-font-color);
}

#loading {
    text-align: center;
    color: var(--secondary-font-color); /* 統一使用次要字體顏色 */
    padding: 20px;
}

/* 響應式調整 (保留您所有的原有響應式規則，並統一顏色變數) */
@media (max-width: 767px) {
    .login-container {
        padding: 1.5rem;
    }
    .login-button, #labButton {
        padding: 10px;
        font-size: 0.9rem;
    }
    #labButton {
        width: 100%;
    }
    .site-icon { height: 60px; width: 150px; }
    .header-inner { padding: 0 16px; }
    .main-content { padding: 16px 0 20px; max-width: 90%; }
    .dropdown-menu { width: 50%; right: -50%; }
    .dropdown-menu.show { right: 0; }
    .button-container { gap: 0.6rem; }
    .action-button { min-width: 80px; padding: 0.4rem 0.6rem; font-size: clamp(0.65rem, 2.5vw, 0.75rem); }
    .search-container { gap: 8px; }
    .search-input { padding: 0.5rem 2.3rem 0.5rem 0.8rem; font-size: clamp(0.75rem, 2.5vw, 0.85rem); }
    .search-button { padding: 0.5rem 0.8rem; font-size: clamp(0.8rem, 2.5vw, 0.9rem); min-width: 60px; }
    .clear-icon { right: 10px; font-size: 16px; }
    .search-button .button-text { display: none; }
    .search-button .bi { margin-right: 0; }
    #menuButton span { display: none; }
    #menuButton { width: 36px; padding: 4px; justify-content: center; align-items: center; }
    #menuButton .bi { margin-right: 0; }
    .primary_content_block { width: 90%; max-height: 60px; }
    .primary_content_block_content { font-size: 12px; }
    .primary_content_block_content .bi { font-size: 14px; }
    .tab-button { padding: 4px 8px; font-size: 12px; }
    .tab-button .bi { font-size: 12px; }
    .time { font-size: 20px; }
    .date { font-size: 16px; }
    .turnstile-container { padding-bottom: 30px; }
    .modal-content { width: 95%; padding: 15px; }
    .modal-content h3 { font-size: 1.1rem; }
    .tools-dropdown { width: 120px; }
    .tools-dropdown-item { padding: 6px 10px; font-size: 12px; }
}