/* Reset & 字體 */
body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
}

/* Navbar 外層 (固定置頂 + 置中) */
.navbar-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    display: flex;
    justify-content: center;
    padding: 15px 0;
    background: transparent;
}

/* Navbar 內容 */
.navbar-custom {
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: 0.5rem 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: all 0.3s ease-in-out;
}

.navbar-nav {
    margin: 0 auto;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    transition: all 0.3s ease-in-out;
    color: #000000;
}

.nav-item {
    padding: 0 4px;
}

.nav-link:hover {
    background: linear-gradient(155deg, rgba(161, 161, 161, 0.8), rgba(90, 90, 90, 0.5));
    color: black !important;
    backdrop-filter: blur(10px);
}

.nav-link.active {
    background: rgba(0, 0, 0, 0.5);
    color: white !important;
    backdrop-filter: blur(10px);
}

/* Section 隱藏/顯示的修正 */
section {
    display: none; /* 預設完全不佔據空間 */
    min-height: 100vh;
    padding-top: 100px; /* 預留 navbar 高度 */
}

section.active {
    display: block; /* 只有活躍的區塊才會顯示 */
}

/* 首頁容器 */
.section-index .home-container {
    position: relative;
    min-height: 500px;
    z-index: 1;
}

.section-index .bg-black {
    background-color: black;
}

.section-index .image-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    align-items: center;
}

.section-index #scrollImage {
    width: 100%;
    height: auto;
    max-height: 90vh;
    object-fit: cover;
    transform: scale(1);
    transition: transform 0.4s ease-out;
}

.section-index .color-white {
    color: #FFFFFF;
}

/* Banner 外層容器 */
.section-index .experience-banner-wrapper {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 40px auto;
    height: 550px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 輪播軌道 */
.section-index .carousel-container {
    display: flex;
    align-items: center;
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-index .no-animation .carousel-item,
.section-index .no-transition {
    transition: none !important;
}

/* 單個項目卡片 */
.section-index .carousel-item {
    min-width: 60%; /* 中間卡片佔寬度 */
    height: 450px;
    margin: 0 10px;
    background: #f8f9fa;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.6s ease;
    opacity: 0.5;
    transform: scale(0.8); /* 預設縮小 */
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

/* 被啟動的（中間）卡片 */
.section-index .carousel-item.active {
    opacity: 1;
    transform: scale(1); /* 中間放大 */
    z-index: 2;
}

.section-index .carousel-item img {
    width: 100%;
    height: 80%; /* 從 70% 增加到 80%，給照片更多發揮空間 */
    object-fit: cover; /* 確保圖片填滿，不會變形 */
    object-position: center; /* 確保人像或重點保持在中間 */
}

.section-index .carousel-info {
    height: 20%; /* 剩餘的 20% 給文字 */
    padding: 10px 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    background: white; /* 讓文字底色與圖片分開 */
}

.section-index .carousel-info h4 {
    margin: 0;
    font-size: 1.1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 控制按鈕 */
.section-index .carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.3);
    color: white;
    border: none;
    padding: 15px;
    cursor: pointer;
    z-index: 10;
    border-radius: 50%;
    outline: none;
    transition: background 0.2s ease, box-shadow 0.2s ease;
}
.section-index .prev { left: 5%; }
.section-index .next { right: 5%; }

.section-index .carousel-btn:hover { background: rgba(0,0,0,0.6); }

.section-index .carousel-btn:focus,
.section-index .carousel-btn:focus-visible {
    background: rgba(0,0,0,0.55);
    box-shadow: 0 0 0 4px rgba(0,0,0,0.2);
}

/* RWD 調整 */
@media (max-width: 768px) {
    .section-index .carousel-item {
        min-width: 80%;
        height: 80%;
    }
    .section-index .experience-banner-wrapper {
        height: 500px;
    }
    .section-index .home-container {
        position: relative;
        min-height: 80% !important;
        z-index: 1;
    }
    .section-index h3 {
        font-size: 1.5rem;
    }
    .section-index h5 {
        font-size: 1rem;
    }
    .section-index .image-container .d-flex {
        flex-direction: column;
        align-items: center; /* 讓圖片在手機版居中 */
    }

    /* 調整圖片在手機版的寬度，確保它們是 100% 寬 */
    .section-index .image-container .d-flex .w-50 {
        width: 100% !important;
    }
}


/* Experience 區塊 */
.section-experience .experience-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 卡片可點擊外層 */
.section-experience .experience-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

/* 卡片樣式 */
.section-experience .experience-card {
    display: flex;
    align-items: stretch; /* 子元素高度一致 */
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 18px rgba(15, 15, 15, 0.08);
    transition: transform 0.28s ease, box-shadow 0.28s ease;
    cursor: pointer;
}

/* hover 效果 */
.section-experience .experience-card-link:focus .experience-card,
.section-experience .experience-card-link:hover .experience-card {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(15, 15, 15, 0.12);
    outline: none;
}

.section-experience a:hover {
    text-decoration: none;
}

/* 圖片區塊 */
.section-experience .experience-image {
    flex: 0 0 48%;
    max-width: 48%;
    height: 100%;
    overflow: hidden;
    background: #eee;
}

.section-experience .experience-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 內容區塊 */
.section-experience .experience-content {
    flex: 1;
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-experience .experience-content h4 {
    margin: 0 0 8px;
    font-size: 1.25rem;
    color: #111;
}

.section-experience .experience-content .muted {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
}

/* 篩選按鈕容器 */
.section-experience .filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: left; /* 或是 flex-start */
}

/* 按鈕樣式 */
.section-experience .filter-btn {
    padding: 8px 16px;
    border: 1px solid #ddd;
    background-color: #fff;
    cursor: pointer;
    border-radius: 40px;
    transition: all 0.3s ease;
    font-size: 1rem;
    color: #333;
    outline: none;

}

.section-experience .filter-btn:hover {
    background-color: #f0f0f0;
}

/* 選中狀態 */
.section-experience .filter-btn.active {
    background-color: rgba(0, 0, 0, 0.5); /* 你的主色調 */
    color: #fff;}

/* 手機版 RWD：圖片在上方，固定卡片高度，圖片占滿上方 */
@media (max-width: 767.98px) {
    .section-experience .experience-card {
        flex-direction: column;
        width: 100%;           /* 卡片滿版 */
        /* height: 300px; */ /* 移除固定卡片高度，讓內容決定 */
        margin: 0;             /* 清除左右空白 */
        overflow: hidden;      /* 避免圖片超出卡片 */
        position: relative;
    }

    .section-experience .experience-image {
        min-width: 100%;
        /* height: 60%; */ /* 移除高度百分比，讓它根據 aspect-ratio 或內容決定 */
        padding-top: 40%; /* 設置圖片區塊寬高比為 16:9 (100% / (16/9) = 56.25%) */
        position: relative;
        overflow: hidden;
        background: #eee; /* 如果圖片載入失敗，顯示背景色 */
    }

    .section-experience .experience-image img {
        position: absolute; /* 絕對定位填滿父容器 */
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;          /* 拉滿圖片區塊 */
        object-fit: cover;     /* 保持比例，超出部分裁切 */
        display: block;
    }

    .section-experience .experience-content {
        width: 100%;
        /* height: 40%; */ /* 移除高度百分比 */
        padding: 20px;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
}

/* 桌面版：圖片區塊固定比例，卡片自適應內容 */
@media (min-width: 768px) {
    .section-experience .experience-card {
        flex-direction: row;
        height: auto;        /* 卡片高度跟內容自適應 */
    }

    .section-experience .experience-image {
        flex: 0 0 48%;
        max-width: 48%;
        aspect-ratio: 16 / 9; /* 圖片區塊固定比例 */
        overflow: hidden;     /* 多餘部分裁掉 */
    }

    .section-experience .experience-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .section-experience .experience-content {
        flex: 1;
        padding: 20px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .section-experience .experience-content h4 {
        font-size: 1.3rem !important;
    }
}


/* --- Develop Section Styles --- */

.section-develop .develop-list-grid,
.section-develop .teaching-list-grid {
    display: grid;
    /* 建立三欄式網格，欄位間距 20px */
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* 確保圖片和文字在卡片內垂直排列 */
.section-develop .experience-card {
    display: flex;
    flex-direction: column;
    align-items: center; /* 圖片和文字居中 */
    padding: 20px;
    height: 100%; /* 確保所有卡片高度相同 */
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    box-shadow: 0 6px 18px rgba(15, 15, 15, 0.08);
    transition: transform 0.28s ease, box-shadow 0.28s ease;
    cursor: pointer;
}

/* 卡片連結的 hover 效果 */
.section-develop .experience-card-link:focus .experience-card,
.section-develop .experience-card-link:hover .experience-card {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(15, 15, 15, 0.12);
    outline: none;
}

.section-develop .experience-card-link:hover {
    text-decoration: none;
}

.section-develop .experience-image {
    width: 100%;
    /* 調整 max-width 和 height 來放大 Logo 區域 */
    max-width: 150px;
    height: 150px;
    display: flex; /* 讓圖片在容器內居中 */
    justify-content: center;
    align-items: center;
    margin-bottom: 15px; /* 在 Logo 和文字之間留出空間 */
    background: transparent; /* 移除背景色 */
}

.section-develop .experience-image img {
    /*width: 100%;*/
    height: 70%;
    object-fit: contain; /* 確保 Logo 完整顯示，不會裁切或變形 */
}

/* 內容區塊 */
.section-develop .experience-content {
    flex: 1; /* 讓內容區塊自動填滿剩餘空間 */
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start; /* 文字從上方開始排列 */
    align-items: center; /* 文字居中 */
}

.section-develop .experience-content h4 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: #111;
}

.section-develop .experience-content .muted,
.section-develop .experience-content .description {
    font-size: 0.95rem;
    color: #666;
    margin: 0;
}

.section-develop .experience-content .description {
    margin-top: 10px;
}

/* RWD for Tablets (2 columns) */
@media (max-width: 991.98px) {
    .section-develop .develop-list-grid,
    .section-develop .teaching-list-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .section-develop .experience-image img {
        /*width: 100%;*/
        height: 60%;
        object-fit: contain; /* 確保 Logo 完整顯示，不會裁切或變形 */
    }
}

/* RWD for Mobile (1 column) */
@media (max-width: 767.98px) {
    .section-develop .develop-list-grid,
    .section-develop .teaching-list-grid {
        grid-template-columns: 1fr;
    }
    .section-develop .experience-image img {
        /*width: 100%;*/
        height: 70%;
        object-fit: contain; /* 確保 Logo 完整顯示，不會裁切或變形 */
    }
}

/* --- 關於我區塊樣式 --- */
.section-about .profile-img {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.section-about .about-content h4 {
    font-weight: 600;
}

.section-about .about-content ul {
    padding-left: 20px;
}

/* 技能標籤樣式 */
.section-about .skills-list .badge {
    background-color: #007bff;
    color: white;
    padding: 8px 12px;
    font-size: 0.9rem;
    font-weight: 500;
    margin: 5px;
    border-radius: 5px;
}

/* 社群連結樣式 */
.section-about .social-links {
    gap: 20px;
}

.section-about .social-link {
    color: #333;
    transition: color 0.3s ease;
    text-decoration: none;
}

.section-about .social-link:hover {
    color: #007bff;
}

.section-about .qrcode-img {
    width: 60px;
    height: 60px;
    border: 1px solid #ccc;
    border-radius: 5px;
}


/* --- 關於我區塊樣式 --- */
.section-about .profile-img {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.section-about .about-content h4 {
    font-weight: 600;
}

.section-about .about-content ul {
    padding-left: 20px;
}

.section-about .info-list,
.section-about .skills-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.section-about .info-card,
.section-about .skill-card {
    display: flex;
    padding: 20px;
    min-height: 118px;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    box-shadow: 0 6px 18px rgba(15, 15, 15, 0.08);
    transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.section-about .info-card {
    align-items: center;
    justify-content: flex-start;
    gap: 16px;
}

.section-about .info-card-link,
.section-about .info-card-static {
    display: block;
    color: inherit;
    text-decoration: none;
}

.section-about .skill-card {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    cursor: pointer;
}

/* hover 效果 */
.section-about .info-card:hover,
.section-about .skill-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(15, 15, 15, 0.12);
}

.section-about .skill-card:hover {
    cursor: default;
}

.section-about .info-card-image-wrapper {
    width: 56px;
    height: 56px;
    flex: 0 0 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: hidden;
}

.section-about .info-card-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.section-about .info-card-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 6px;
    width: 100%;
    text-align: left;
}

.section-about .info-card h4 {
    margin: 0;
    color: #111;
    font-size: 1.05rem;
    line-height: 1.45;
    text-align: left;
}

.section-about .info-card-period {
    margin: 0;
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.4;
    text-align: left;
}

/* 內容區塊 */
.section-about .skill-card i {
    font-size: 2.5rem;
    color: #555;
    margin-bottom: 15px;
}

.section-about .skill-card h4 {
    font-size: 1.1rem;
    margin: 0;
    color: #111;
}

/* RWD for Tablets (2 columns) */
@media (max-width: 991.98px) {
    .section-about .info-list,
    .section-about .skills-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* RWD for Mobile (1 column) */
@media (max-width: 767.98px) {
    .section-about .info-list,
    .section-about .skills-list {
        grid-template-columns: 1fr;
    }

    .section-about .info-card {
        padding: 18px;
    }
}

/* --- 關於我區塊 - 社群連結卡片樣式 --- */
.section-about .social-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 預設為四欄 */
    gap: 20px;
}

/* 卡片連結外層 */
.section-about .social-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

/* 卡片樣式 */
.section-about .social-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    height: 100%;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    box-shadow: 0 6px 18px rgba(15, 15, 15, 0.08);
    transition: transform 0.28s ease, box-shadow 0.28s ease;
    cursor: pointer;
}

/* hover 效果 */
.section-about .social-card-link:focus .social-card,
.section-about .social-card-link:hover .social-card {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(15, 15, 15, 0.12);
    outline: none;
}

/* 內容區塊 */
.section-about .social-content {
    flex: 1;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.section-about .social-content i {
    font-size: 2.5rem;
    color: #555;
    margin-bottom: 15px;
}

.section-about .social-content h4 {
    font-size: 1.1rem;
    margin: 0;
    color: #111;
}

/* RWD for Tablets (2 columns) */
@media (max-width: 991.98px) {
    .section-about .social-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* RWD for Mobile (1 column) */
@media (max-width: 767.98px) {
    .section-about .social-links {
        grid-template-columns: repeat(2, 1fr);
    }
}


/* Footer */
footer {
    padding: 20px 0;
    text-align: center;
    background-color: #f8f8f8;
}