ier New', Courier, monospace;
        }
        .copy-btn {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: rgba(255,255,255,0.1);
            color: var(--text-color);
            border: 1px solid var(--card-border);
            padding: 0.5rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            opacity: 0.5;
            transition: all 0.3s ease;
        }
        .code-block