body {
    margin: 20px;
    background-color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    -webkit-font-smoothing: antialiased;
    font-size: 16px;
    color: #000000;
}

h1 {
    color: #000000;
    margin-bottom: 30px;
    font-size: 2rem;
    text-align: center;
    font-weight: 600;
    padding-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.card {
    background: #ffffff;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border: 1px solid #e0e0e0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.card-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 12px;
}

.card-header i {
    font-size: 1.5rem;
    color: #000000;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
    border-radius: 8px;
}

.card-header h2 {
    color: #000000;
    margin: 0;
    font-size: 1.3rem;
    font-weight: 500;
}

.endpoint-container {
    display: flex;
    align-items: center;
    background: #f8f8f8;
    border-radius: 8px;
    padding: 12px 15px;
    border: 1px solid #e0e0e0;
}

.endpoint-text {
    color: #333333;
    font-size: 14px;
    word-break: break-all;
    line-height: 1.5;
    flex-grow: 1;
    margin-right: 12px;
    font-family: 'SF Mono', Monaco, 'Cascadia Mono', 'Roboto Mono', monospace;
}

.copy-btn {
    background: #ffffff;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    width: 36px;
    height: 36px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #555555;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.copy-btn:hover {
    background: #f0f0f0;
    color: #000000;
    border-color: #b0b0b0;
}

.copy-btn.copied {
    background: #e8f5e9;
    color: #2e7d32;
    border-color: #c8e6c9;
}

@media (max-width: 768px) {
    body {
        margin: 15px;
        font-size: 15px;
    }
    
    h1 {
        font-size: 1.6rem;
        margin-bottom: 25px;
    }
    
    .card {
        padding: 16px;
        margin-bottom: 16px;
    }
    
    .card-header h2 {
        font-size: 1.2rem;
    }
    
    .endpoint-text {
        font-size: 13px;
    }
    
    .copy-btn {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    body {
        margin: 12px;
    }
    
    h1 {
        font-size: 1.4rem;
    }
    
    .card {
        padding: 14px;
    }
    
    .endpoint-container {
        padding: 10px 12px;
    }
    
    .copy-btn {
        width: 30px;
        height: 30px;
    }
}