/* 全局樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #87CEEB 0%, #98D8E8 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* 頁面切換 */
.page {
    display: none;
    min-height: 100vh;
    position: relative;
}

.page.active {
    display: block;
}

/* 封面頁面樣式 */
#coverPage {
    background: url('1.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

#coverPage::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(135, 206, 235, 0.3);
    z-index: 1;
}

.cover-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    width: 100%;
    padding: 20px;
    position: relative;
}

.cover-content {
    flex: 1;
    z-index: 2;
    color: white;
    text-align: left;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
}

.subtitle {
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 300;
}

.main-title {
    font-size: 4rem;
    font-weight: bold;
    margin-bottom: 30px;
    text-shadow: 3px 3px 6px rgba(0,0,0,0.8);
}

.instructions {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 500px;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.7);
}

.instructions p {
    margin-bottom: 10px;
}

.start-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 3px solid white;
    color: white;
    padding: 15px 40px;
    font-size: 1.3rem;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    backdrop-filter: blur(10px);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.start-btn:hover {
    background: white;
    color: #87CEEB;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 響應式設計 */
@media (max-width: 768px) {
    .cover-container {
        flex-direction: column;
        text-align: center;
    }
    
    .main-title {
        font-size: 2.5rem;
    }
    
    .instructions {
        font-size: 1rem;
    }
}