/* 全局變量保持不變 */
:root {
    --primary-color: #2e8b57;
    /*深竹綠 */
    --secondary-color: #4a4a4a;
    --text-light: #767676;
    --background-light: #fafafa00;
    --accent-pink: #fff0f3;
    --border-light: #eeeeee;
    --success-color: #4caf50;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
}

/* 通用容器樣式 */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* 標頭區域樣式 */
.site-header {
    background-color: #fff;
    padding: 15px 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-light);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 品牌樣式 */
.site-branding {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.site-branding h1 {
    font-size: 1.8em;
    margin: 0;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 1.5px;
}

.site-branding h1 a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.site-branding h1 a:hover {
    color: var(--secondary-color);
}

.site-branding p {
    font-size: 0.9em;
    color: var(--text-light);
    margin: 5px 0 0;
    font-family: 'Open Sans', sans-serif;
}

/* 桌面版導航列樣式 */
.nav-toggle {
    display: none;
}

.nav-toggle-label {
    display: none;
}

.main-navigation {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 30px;
}

.nav-menu li {
    position: relative;
}

.nav-menu li a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95em;
    padding: 8px 0;
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    font-family: 'Open Sans', sans-serif;
}

.nav-menu li a:hover {
    color: var(--primary-color);
}

/* 導航項目下劃線效果 */
.nav-menu li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-menu li a:hover::after {
    width: 100%;
}

/* 主內容區域 */
.site-content {
    padding: 40px 20px;
    max-width: 1280px;
    margin: 0 auto;
    background-color: var(--background-light);
}

/* 手機版響應式設計 */
@media screen and (max-width: 768px) {
    .site-header .container {
        flex-wrap: wrap;
        position: relative;
        /* 確保作為定位上下文 */
    }

    /* 顯示漢堡選單按鈕 */
    .nav-toggle-label {
        display: flex;
        align-items: center;
        position: absolute;
        /* 相對於 .container 定位 */
        right: 20px;
        /* 向左平移 20px */
        top: 50%;
        transform: translateY(-50%);
        font-size: 0.85em;
        color: var(--secondary-color);
        gap: 5px;
        padding: 10px;
        border-radius: var(--radius-sm);
        background-color: var(--accent-pink);
        cursor: pointer;
        z-index: 1002;
    }

    .nav-toggle-label span::before {
        content: "MENU";
        font-family: 'Montserrat', sans-serif;
        letter-spacing: 1px;
    }

    /* 手機版導航選單樣式 */
    .main-navigation {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: transparent;
        pointer-events: none;
        visibility: hidden;
        z-index: 1001;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        margin: 0;
        padding: 60px 0 0;
        background: white;
        flex-direction: column;
        gap: 0;
        transform: translateX(100%);
        transition: transform 0.3s ease-out;
        overflow-y: auto;
        box-shadow: var(--shadow-md);
    }

    /* 背景遮罩 */
    .main-navigation::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        opacity: 0;
        transition: opacity 0.3s ease-out;
        pointer-events: none;
    }

    /* 選單開啟狀態 */
    .nav-toggle:checked~.main-navigation {
        visibility: visible;
        pointer-events: auto;
    }

    .nav-toggle:checked~.main-navigation::before {
        opacity: 1;
        pointer-events: auto;
    }

    .nav-toggle:checked~.main-navigation .nav-menu {
        transform: translateX(0);
    }

    .nav-toggle:checked~.nav-toggle-label {
        background-color: var(--primary-color);
        color: white;
    }

    .nav-toggle:checked~.nav-toggle-label span::before {
        content: "CLOSE";
    }

    /* 手機版選單項目樣式 */
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-light);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu li a {
        padding: 15px 20px;
        text-align: left;
    }

    /* 移除手機版下劃線效果 */
    .nav-menu li a::after {
        display: none;
    }

    .nav-menu li a:hover {
        background-color: var(--accent-pink);
    }
}

/* 小螢幕設備調整 */
@media screen and (max-width: 480px) {
    .nav-menu {
        width: 250px;
    }

    .site-branding h1 {
        font-size: 1.5em;
    }

    .site-branding p {
        font-size: 0.8em;
    }

    .nav-toggle-label {
        padding: 8px 12px;
        font-size: 0.8em;
    }
}