.container {
    background: #1a1a2e;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    max-width: 900px;
    width: 90%;
    margin: 40px auto;
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
    color: #fff;
    padding: 40px 30px;
    text-align: center;
    border-bottom: 2px solid #2c5364;
}

.header h1 {
    font-size: 2.2em;
    margin-bottom: 10px;
    color: #64b5f6;
}

.header p {
    font-size: 1.1em;
    opacity: 0.9;
    color: #b0bec5;
}

.content {
    padding: 40px 30px;
}

.seo-text {
    margin-bottom: 25px;
    line-height: 1.6;
    color: #b0bec5;
    text-align: center;
}

.seo-text p {
    margin-bottom: 0;
}

.embed-section {
    background: #16213e;
    border-radius: 12px;
    padding: 25px;
    border: 1px solid #2c5364;
}

.code-container {
    position: relative;
    background: #0d1117;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
    border: 1px solid #1e3a5f;
}

.code-block {
    color: #64b5f6;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.copy-btn {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7e22ce 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(30, 60, 114, 0.4);
    width: 100%;
}

.copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 60, 114, 0.6);
    background: linear-gradient(135deg, #2a5298 0%, #1e3c72 50%, #9333ea 100%);
}

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

.copy-btn.copied {
    background: linear-gradient(135deg, #00b894 0%, #00cec9 100%);
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8em;
    }
    
    .content {
        padding: 30px 20px;
    }
}