/* 全局样式 */
:root {
    --primary-color: #1e88e5;
    --secondary-color: #ff9800;
    --background-color: #e3f2fd;
    --text-color: #333;
    --accent-color: #00c853;
    --border-radius: 12px;
    --box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    background-image: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path d="M30,50 C30,40 40,30 50,30 C60,30 70,40 70,50 C70,60 60,70 50,70 C40,70 30,60 30,50 Z" fill="none" stroke="%231e88e5" stroke-width="0.5" opacity="0.3"/></svg>');
    background-size: 100px 100px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

/* 标题样式 */
header {
    text-align: center;
    margin-bottom: 30px;
    background-color: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
}

header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
}

h1 {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

/* 导航按钮 */
.story-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    background-color: white;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.bottom-nav {
    margin-top: 20px;
    margin-bottom: 30px;
}

.nav-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.nav-btn:hover:not([disabled]) {
    background-color: #1565c0;
    transform: translateY(-2px);
}

.nav-btn:disabled {
    background-color: #b0bec5;
    cursor: not-allowed;
}

#page-indicator, #page-indicator-bottom {
    font-size: 1rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* 故事内容 */
.story-container {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    position: relative;
}

.story-page {
    display: none;
    padding: 20px;
}

.story-page.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.story-image {
    text-align: center;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.story-image img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: var(--border-radius);
    transition: transform 0.3s ease;
}

.story-image img:hover {
    transform: scale(1.02);
}

.story-text {
    margin-bottom: 20px;
}

.story-text h2 {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-align: center;
}

.story-text p {
    margin-bottom: 15px;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* 音频控制 */
.audio-control {
    text-align: center;
    margin-top: 20px;
}

.play-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.play-btn:hover {
    background-color: #f57c00;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.play-btn .play-icon,
.play-btn .pause-icon {
    margin-right: 8px;
    font-size: 1.2rem;
}

.play-btn .pause-icon {
    display: none;
}

.play-btn.playing .play-icon {
    display: none;
}

.play-btn.playing .pause-icon {
    display: inline;
}

/* 页脚 */
footer {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    font-size: 0.9rem;
    color: #666;
}

footer p {
    margin-bottom: 5px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .story-text p {
        font-size: 1rem;
    }
    
    .nav-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
    
    #page-indicator, #page-indicator-bottom {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .story-text h2 {
        font-size: 1.5rem;
    }
    
    .story-text p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .play-btn {
        padding: 10px 20px;
        font-size: 1rem;
    }
}

/* 打印样式 */
@media print {
    .story-navigation, .audio-control, footer {
        display: none;
    }
    
    .story-page {
        display: block;
        page-break-after: always;
        break-after: page;
    }
    
    .story-container {
        box-shadow: none;
    }
    
    header {
        box-shadow: none;
    }
    
    body {
        background: none;
    }
}