/* Reset 基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: 'Helvetica Neue', sans-serif;
    color: #fff;
    overflow-x: hidden;
    background-color: #000;
}

#bg-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.container {
    position: relative;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

/* 卡片樣式 */
.card {
    background: rgba(30, 30, 30, 0.8);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* 滑鼠移上卡片的動畫效果 */
.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.8rem;
    text-align: right;
    font-size: 0.8rem;
}

h2 {
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

/* 按鈕樣式 */
.btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background-color: #4a5568;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.3s;
}

.btn:hover {
    background-color: #2d3748;
}

/* 響應式設計 */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    .card-image {
        height: 150px;
    }

    .card-body, .card-footer {
        padding: 1rem;
    }
}

/* 新增：切換模式按鈕 */
#toggle-theme {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 0.5rem 1rem;
    border: none;
    background-color: rgba(255, 255, 255, 0.8);
    color: #000;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    z-index: 1000;
    transition: background 0.3s, color 0.3s;
}

#toggle-theme:hover {
    background-color: rgba(200, 200, 200, 0.9);
}

/* 深色模式 */
.dark-mode {
    background-color: #111; /* 深色背景 */
}

.dark-mode #bg-video {
    opacity: 0.1; /* 背景影片淡掉 */
}

.dark-mode body {
    background-color: #111;
    color: #eee;
}

.dark-mode .card {
    background: rgba(50, 50, 50, 0.85);
}

.dark-mode #toggle-theme {
    background-color: rgba(50, 50, 50, 0.8);
    color: #eee;
}

.container {
    display: grid;
    grid-template-columns: 1fr; /* 預設：一列一個 */
    gap: 2rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* 卡片本身 */
.card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, background 0.3s ease;
}

/* 卡片圖片 */
.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

/* 讓橫向螢幕排兩個卡片 */
@media (min-width: 768px) {
    .container {
        grid-template-columns: 1fr 1fr; /* 兩列 */
    }
}