/* css/main-style.css */
:root {
    --primary-blue: #002663;
    --accent-gold: #c4a006;
    --light-bg: #f4f7f9;
    --sidebar-width: 280px;
    --white: #ffffff;
    --text-dark: #333;
    --success-green: #27ae60;
    --error-red: #c0392b;
}

body {
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang TC", "Microsoft JhengHei", sans-serif;
    margin: 0;
    display: flex;
    background-color: var(--light-bg);
    color: var(--text-dark);
}

/* --- Sidebar 側邊欄 --- */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--primary-blue);
    color: white;
	/* --- 關鍵修正：開啟捲動功能 --- */
    overflow-y: auto; 
    overflow-x: hidden;
    /* -------------------------- */
    position: fixed;
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.sidebar-header { padding: 30px 20px; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-header h3 { margin: 0; font-size: 1.4rem; letter-spacing: 1px; }

.nav-menu { list-style: none; padding: 20px 0; margin: 0; flex-grow: 1; }
.nav-menu li a {
    display: block;
    padding: 15px 25px;
    color: #bdc3c7;
    text-decoration: none;
    transition: 0.3s;
    font-size: 0.95rem;
}
.nav-menu li a:hover, .nav-menu li a.active {
    background-color: rgba(255,255,255,0.1);
    color: white;
    border-left: 4px solid var(--accent-gold);
}

.sidebar-footer { padding: 20px; font-size: 0.75rem; color: #7f8c8d; text-align: center; }

/* --- Main Content 主內容區 --- */
.main-content {
    margin-left: var(--sidebar-width);
    width: 100%;
    padding: 40px;
    box-sizing: border-box;
}

.container { max-width: 850px; margin: 0 auto; }

header { margin-bottom: 3rem; border-bottom: 2px solid #ddd; padding-bottom: 1.5rem; }
header h1 { color: var(--primary-blue); font-size: 2.2rem; margin: 0; }
header p { font-size: 1.1rem; color: #666; }

/* --- 卡片與元件 --- */
.card {
    background: var(--white);
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    border-top: 5px solid var(--primary-blue);
}

.case-study {
    background-color: #f0f7ff;
    border-left: 4px solid #3498db;
    padding: 1.5rem;
    margin: 1rem 0;
    border-radius: 0 8px 8px 0;
}

.important-box {
    background-color: #fff9db;
    border-left: 5px solid #f08c00;
    padding: 1.2rem;
    border-radius: 4px;
    margin: 1.5rem 0;
}

.highlight-text { color: #d35400; font-weight: bold; }

/* --- 表格樣式 --- */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}
.comparison-table th, .comparison-table td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}
.comparison-table th { background-color: #f8f9fa; color: var(--primary-blue); }

/* --- 響應式設定 --- */
@media (max-width: 992px) {
    body { flex-direction: column; }
    .sidebar { width: 100%; height: auto; position: relative; }
    .main-content { margin-left: 0; padding: 20px; }
    .nav-menu { display: flex; flex-wrap: wrap; padding: 10px; }
    .nav-menu li { width: 50%; }
}

/* 1. 父容器：確保網格內的子項高度一致 */
.card-container {
    display: grid;
    /* 這裡使用 repeat 讓它在電腦版自動排開 */
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    /* 這是關鍵：讓所有 Grid Items 高度填滿該列最高的那個 */
    align-items: stretch; 
}

/* 2. 子方塊：確保綠色邊框填滿 Grid 分配的空間 */
.feature-box {
    display: flex;
    flex-direction: column; /* 讓內容垂直排列 */
    height: 100%;           /* 關鍵：強制綠色方塊填滿父網格高度 */
    
    background: #f9fffb;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #e0e0e0;
    border-top: 4px solid #27ae60;
}

/* 3. (進階) 讓內部的段落自動撐開，把底部推齊 */
.feature-box p {
    flex-grow: 1; /* 讓文字部分佔據剩餘空間，如果未來方塊下方有按鈕，按鈕會被推到最底 */
}