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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', Arial, sans-serif;
    background: linear-gradient(135deg, #e0e0e0 0%, #f5f5f5 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #fb7299 0%, #ffafc9 100%);
    color: white;
    padding: 20px 30px;
    position: relative;
    overflow: hidden;
}

.header h1 {
    font-size: 2em;
    margin-bottom: 5px;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.header p {
    opacity: 0.9;
    font-size: 1em;
    position: relative;
    z-index: 1;
}

.nav {
    background: #fff;
    padding: 0;
    border-bottom: 1px solid #e8e8e8;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-menu {
    display: flex;
    list-style: none;
    overflow-x: auto;
}

.nav-item {
    padding: 15px 25px;
    cursor: pointer;
    font-weight: 500;
    color: #666;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    white-space: nowrap;
    font-size: 15px;
}

.nav-item a {
    color: inherit;
    text-decoration: none;
    display: block;
}

.nav-item:hover {
    color: #fb7299;
    background: #f9f9f9;
}

.nav-item:hover a {
    color: #fb7299;
}

.nav-item.active {
    color: #fb7299;
    border-bottom: 3px solid #fb7299;
    background: #fff;
}

.nav-item.active a {
    color: #fb7299;
}

.page {
    display: none;
    padding: 30px;
    min-height: 400px;
}

.page.active {
    display: block;
}

.page-header {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.page-header h2 {
    color: #222;
    font-size: 1.8em;
    display: flex;
    align-items: center;
}

.page-header h2::before {
    content: attr(data-icon);
    margin-right: 10px;
    font-size: 1.2em;
}

.form-group {
    background: #f9f9f9;
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 25px;
    border: 1px solid #e8e8e8;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 15px;
}

.input-group input, 
.input-group select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e8e8e8;
    border-radius: 8px;
    font-size: 16px;
    background: white;
    transition: all 0.3s ease;
}

.input-group input:focus, 
.input-group select:focus {
    outline: none;
    border-color: #fb7299;
    box-shadow: 0 0 0 3px rgba(251, 114, 153, 0.1);
}

.btn {
    background: linear-gradient(135deg, #fb7299 0%, #ffafc9 100%);
    color: white;
    border: none;
    padding: 14px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    margin: 5px;
    box-shadow: 0 4px 15px rgba(251, 114, 153, 0.3);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(251, 114, 153, 0.4);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.results {
    background: #f9f9f9;
    border-radius: 12px;
    padding: 25px;
    margin-top: 25px;
    border: 1px solid #e8e8e8;
}

.result-item {
    background: white;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: 10px;
    border-left: 5px solid #fb7299;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.result-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.result-title {
    font-weight: 600;
    color: #222;
    margin-bottom: 10px;
    font-size: 16px;
}

.result-value {
    color: #555;
    font-size: 16px;
    line-height: 1.6;
    word-wrap: break-word;
}

.loading {
    text-align: center;
    padding: 60px;
    color: #666;
    font-size: 16px;
}

.loading::before {
    content: '🔄';
    display: block;
    font-size: 2.5em;
    margin-bottom: 15px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.error {
    background: linear-gradient(135deg, #ff6b6b 0%, #ffa8a8 100%);
    color: white;
    padding: 20px;
    border-radius: 10px;
    border-left: 5px solid #ff4757;
    font-size: 16px;
}

.emoji-display {
    font-size: 3em;
    text-align: center;
    padding: 40px 0;
    margin: 20px 0;
    background: linear-gradient(45deg, #ffe6f0, #f0f8ff);
    border-radius: 15px;
    border: 3px dashed #fb7299;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(251, 114, 153, 0.2); }
    70% { box-shadow: 0 0 0 15px rgba(251, 114, 153, 0); }
    100% { box-shadow: 0 0 0 0 rgba(251, 114, 153, 0); }
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.feature-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #e8e8e8;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border-color: #fb7299;
}

.feature-card h4 {
    color: #222;
    margin-bottom: 10px;
    font-size: 16px;
}

.feature-card p {
    color: #666;
    font-size: 14px;
}

.api-doc {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 25px;
    border: 1px solid #e8e8e8;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.api-section {
    margin-bottom: 30px;
    padding: 20px;
    border: 1px solid #f0f0f0;
    border-radius: 8px;
}

.api-section h3 {
    color: #222;
    margin-bottom: 15px;
    font-size: 1.3em;
    border-bottom: 2px solid #fb7299;
    padding-bottom: 8px;
}

.api-endpoint {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    margin: 10px 0;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.api-params {
    margin: 15px 0;
}

.api-params h4 {
    color: #333;
    margin-bottom: 10px;
}

.param-item {
    background: #f9f9f9;
    padding: 10px;
    margin: 5px 0;
    border-radius: 4px;
    border-left: 3px solid #fb7299;
}

.example {
    background: #2d3748;
    color: #e2e8f0;
    padding: 15px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    overflow-x: auto;
    margin: 15px 0;
}

.response {
    background: #e6fffa;
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid #38b2ac;
    margin: 15px 0;
}

.chat-container {
    background: #f9f9f9;
    border-radius: 12px;
    padding: 25px;
    margin-top: 25px;
    border: 1px solid #e8e8e8;
}

.footer {
    text-align: center;
    padding: 25px;
    color: #666;
    font-size: 14px;
    border-top: 1px solid #eee;
    margin-top: 30px;
}

.bilibili-logo {
    display: inline-block;
    font-weight: bold;
    color: #fb7299;
    font-size: 1.2em;
}

/* 锚点导航样式 */
.api-toc {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
    border-left: 4px solid #fb7299;
}

.api-toc h4 {
    color: #222;
    margin-bottom: 10px;
    font-size: 1.1em;
}

.api-toc ul {
    list-style: none;
    padding-left: 0;
}

.api-toc li {
    margin-bottom: 8px;
}

.api-toc a {
    color: #fb7299;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.api-toc a:hover {
    color: #ff5e84;
    text-decoration: none;
}

/* 锚点定位高亮效果 */
.api-section:target {
    border: 2px solid #fb7299;
    box-shadow: 0 0 15px rgba(251, 114, 153, 0.3);
    animation: highlight 1s ease;
}

@keyframes highlight {
    0% { background-color: rgba(251, 114, 153, 0.1); }
    100% { background-color: transparent; }
}

@media (max-width: 768px) {
    .nav-menu {
        flex-wrap: wrap;
    }
    
    .nav-item {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .page {
        padding: 20px;
    }
    
    .form-group {
        padding: 20px;
    }
    
    .header h1 {
        font-size: 1.5em;
    }
    
    .api-endpoint, .example {
        font-size: 12px;
    }
    
    .api-toc {
        padding: 15px;
    }
}