/* 基础样式 */
body {
    background: linear-gradient(135deg, #000033, #1a2a6c, #b827fc);
    color: white;
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Merriweather', serif;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

p {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

pre {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1rem;
    overflow-x: auto;
}

code {
    color: #3498db;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 2rem;
}

th, td {
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.8rem;
    text-align: left;
}

th {
    background-color: rgba(255, 255, 255, 0.1);
}

/* 视差滚动效果 */
.parallax {
    background-image: url('https://images.gptkong.com/demo/sample1.png');
    height: 400px;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
    z-index: -1;
    margin-top: 2rem;
}

.content-layer {
    position: relative;
    z-index: 1;
    padding: 2rem;
    background: rgba(0, 0, 0, 0.7);
}

/* 动画与交互 */
button {
    background: linear-gradient(45deg, #3498db, #2ecc71);
    border: none;
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

.loader {
    border: 8px solid #f3f3f3;
    border-top: 8px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 渐变文字效果 */
.text-fade-in {
    animation: fadeIn 1s ease-in-out;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .parallax {
        background-attachment: scroll;
        height: 300px;
    }

    h1 {
        font-size: 2rem;
    }

    p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .content-layer {
        padding: 1rem;
    }

    pre {
        font-size: 0.8rem;
    }
}

/* 图片装饰 */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    object-fit: cover;
}

/* 提示信息 */
.tip {
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    margin: 2rem 0;
}