/* --- Google Font 與全域設定 --- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700&display=swap');

:root {
    --primary-color: #005f73;
    --secondary-color: #0a9396;
    --highlight-color: #94d2bd;
    --accent-color: #ee9b00;
    --bg-light: #f8f9fa;
    --bg-dark: #343a40;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.05), 0 4px 6px rgba(0, 0, 0, 0.05);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 400;
    line-height: 1.8;
    margin: 0;
    padding: 0;
    background: var(--bg-light);
    color: var(--text-primary);
}

/* --- ★★★★★ 最終版圖片顯示樣式 ★★★★★ --- */
.figure-container { 
    margin: 20px 0; 
    padding: 0; 
}
.figure-container a {
    display: block;
    text-decoration: none;
}
.figure-container img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 15px auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: zoom-in;
    transition: box-shadow 0.3s;
}
.figure-container img:hover {
    box-shadow: var(--shadow-lg);
}
.figure-container figcaption {
    margin-top: 10px;
    font-size: .9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    text-align: left;
    padding: 10px;
    background-color: var(--bg-light);
    border-radius: 4px;
}

/* --- ★★★★★ 燈箱 (Lightbox) 樣式 ★★★★★ --- */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
    cursor: zoom-out;
    animation: fadeIn 0.3s ease;
}
.lightbox.closing {
    animation: fadeOut 0.3s ease forwards;
}
.lightbox img {
    max-width: 100%;
    max-height: 100%;
    box-shadow: 0 0 50px rgba(0,0,0,0.5);
    border-radius: 8px;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* --- 元件樣式 --- */
.navbar{background-color:rgba(255,255,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);padding:1rem 1.5rem;position:sticky;top:0;z-index:1000;transition:box-shadow .3s}.nav-container{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.nav-logo{font-size:1.5rem;font-weight:700;color:var(--primary-color);text-decoration:none; white-space: nowrap;}.nav-menu{list-style:none;display:flex;gap:1rem;margin:0;padding:0}.nav-link{color:var(--text-secondary);text-decoration:none;font-weight:500;padding:.5rem 1rem;border-radius:6px;position:relative;transition:color .3s; white-space: nowrap;}.nav-link:hover,.nav-link.active{color:var(--primary-color)}.nav-link::after{content:'';position:absolute;width:0;height:3px;bottom:-5px;left:50%;transform:translateX(-50%);background-color:var(--secondary-color);border-radius:2px;transition:width .3s ease-in-out}.nav-link:hover::after,.nav-link.active::after{width:60%}header{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;padding:5rem 2rem;text-align:center;position:relative;overflow:hidden}.header-content h1{font-size:3.2rem;font-weight:700;margin-bottom:.5rem}main{padding:2rem 1rem;max-width:1000px;margin:0 auto}section{background:#fff;margin-bottom:2.5rem;padding:2rem 2.5rem;border-radius:16px;box-shadow:var(--shadow);opacity:0;transform:translateY(30px);transition:opacity .6s ease-out,transform .6s ease-out}section.visible{opacity:1;transform:translateY(0)}h2{color:var(--primary-color);text-align:center;font-size:2.2rem;font-weight:700;margin-bottom:2.5rem;position:relative;padding-bottom:1rem}h2::after{content:'';position:absolute;width:80px;height:4px;bottom:0;left:50%;transform:translateX(-50%);background-color:var(--highlight-color);border-radius:2px}h3{font-size: 1.6rem; color: var(--secondary-color); margin-top: 2rem;}h4{font-size: 1.3rem; color: var(--primary-color); margin-top: 2rem; border-bottom: 2px solid var(--border-color); padding-bottom: 0.5rem;}h5{font-size: 1.15rem; color: var(--secondary-color); font-weight: 700; margin-top: 1.5rem; margin-bottom: 1rem;}p,li{font-size:1.1rem;margin-bottom:1rem}strong, b{color:var(--primary-color);font-weight:700}.table-container{border:1px solid var(--border-color);border-radius:8px;overflow:hidden;margin-top:1.5rem}table{width:100%;border-collapse:collapse}th,td{padding:15px;text-align:left;border:1px solid var(--border-color)}thead{background-color:var(--primary-color);color:#fff;font-weight:500}tbody tr:nth-of-type(even){background-color:var(--bg-light)}td.category{background-color:#e0f7fa;font-weight:700;color:var(--primary-color);vertical-align:middle}td i{color:var(--text-secondary);font-size:.9em}.interpretation-methods,.case-study-steps{display:grid;grid-template-columns:1fr;gap:30px;margin-top:20px}@media (min-width:768px){.interpretation-methods,.case-study-steps{grid-template-columns:1fr 1fr}}.interp-item{padding:25px;border-radius:12px;background-color:var(--bg-light);border:1px solid var(--border-color)}.constraints-levels{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.level-item{padding:1.5rem;border-left:5px solid;border-radius:8px}.level-item:nth-of-type(1){border-color:#ae2012;background-color:#fff1f0}.level-item:nth-of-type(2){border-color:#ee9b00;background-color:#fff9eb}.level-item:nth-of-type(3){border-color:#005f73;background-color:#e0f7fa}.case-study{background-color:var(--bg-dark);color:var(--bg-light);border-radius:16px;border:none}.case-study h2{color:#fff}.step{background-color:#495057;padding:25px;border-radius:12px}.app-grid-expanded{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:25px;margin-top:20px}.app-card{background:#fff;border:1px solid var(--border-color);border-radius:12px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .3s ease-in-out,box-shadow .3s ease-in-out}.app-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}.app-card-header{background-color:var(--secondary-color);color:white;padding:15px 20px;border-top-left-radius:12px;border-top-right-radius:12px}.app-card-header h3{margin:0;color:white;font-size:1.4rem}.app-card-body{padding:25px;flex-grow:1;display:flex;flex-direction:column}.app-card-body ul{flex-grow:1}.example-link{display:inline-block;margin-top:15px;padding:10px 18px;background-color:var(--primary-color);color:white;text-decoration:none;border-radius:5px;font-weight:700;transition:background-color .2s,transform .2s}.example-link:hover{background-color:var(--accent-color);transform:scale(1.05)}.special-topic-section{background-color:#f7feff;border-left:5px solid var(--secondary-color)}.topic-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem}.topic-item{background-color:#fff;padding:1.5rem;border-radius:12px;box-shadow:var(--shadow);border-top:4px solid var(--highlight-color)}.topic-item h3{font-size:1.5rem;color:var(--primary-color);border-bottom:2px solid var(--border-color);padding-bottom:.5rem;margin-bottom:1rem}.topic-item h4{font-size:1.2rem;color:var(--secondary-color);font-style:italic}.summary-text{text-align:center;font-size:1.2rem;font-weight:500}.back-to-top{position:fixed;bottom:20px;right:20px;background-color:var(--primary-color);color:white;width:50px;height:50px;border-radius:50%;display:flex;justify-content:center;align-items:center;text-decoration:none;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(20px);transition:opacity .3s,visibility .3s,transform .3s,background-color .3s}.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top:hover{background-color:var(--accent-color)}.back-to-top svg{width:24px;height:24px}

/* --- 資料處理分頁樣式 --- */
.code-block {background-color: #2d333b; color: #cdd9e5; padding: 20px; border-radius: 8px; margin: 20px 0; overflow-x: auto; border: 1px solid var(--border-color);}.code-block pre {margin: 0; font-family: 'Courier New', Courier, monospace;}.code-block code {font-family: inherit; font-size: 0.95rem; line-height: 1.6; color: #79c0ff;}.step-list {list-style-type: disc; padding-left: 30px;}.step-list li {margin-bottom: 0.5rem;}.step-list ul {margin-top: 0.5rem;}

/* --- 提示與總結方塊樣式 --- */
.screenshot-prompt {background-color: #fff9eb; border-left: 4px solid var(--accent-color); padding: 10px 15px; margin: 15px 0; border-radius: 4px; font-size: 0.95rem;}.screenshot-prompt p {margin: 0; color: var(--text-secondary);}.summary-box {background-color: #e0f7fa; border-left: 4px solid var(--primary-color); padding: 15px 20px; margin: 25px 0 10px 0; border-radius: 4px;}.summary-box p {margin: 0; font-size: 1.05rem; font-weight: 500;}
.workflow-summary {background-color: #f0fff4; border-left: 4px solid #2ea043; padding: 15px 20px; margin: 25px 0 10px 0; border-radius: 4px;}.workflow-summary h5 {margin-top: 0; color: #2ea043; border-bottom: none;}.workflow-summary ol {padding-left: 20px; margin-bottom: 0;}

footer{text-align:center;padding:2rem;margin-top:2rem;background:var(--bg-dark);color:var(--bg-light)}

/* --- ★★★★★ 響應式網頁設計 (RWD) for Mobile ★★★★★ --- */
@media (max-width: 820px) {
    .nav-container {flex-direction: column; gap: 1rem;}
    .nav-menu {flex-wrap: wrap; justify-content: center; gap: 0.2rem 0.5rem;}
    .nav-link {padding: .4rem .6rem; font-size: 0.9rem;}
    main {padding: 1.5rem 0.5rem;}
    section {padding: 1.5rem;}
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.8rem; }
    h3 { font-size: 1.4rem; }
    .interpretation-methods, .case-study-steps, .app-grid-expanded, .topic-grid {grid-template-columns: 1fr;}
}