:root {
            --bg-main: #0B0F19;
            --bg-card: #151D30;
            --bg-input: #1F293D;
            --text-main: #F3F4F6;
            --text-dim: #9CA3AF;
            --teal: #10B981;
            --teal-hover: #059669;
            --border: #2D3748;
            --error: #EF4444;
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-main);
            color: var(--text-main);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            padding: 20px;
        }

        header {
            text-align: center;
            margin-bottom: 2rem;
        }

        header h1 {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 2.5rem;
            color: var(--text-main);
            margin-bottom: 0.5rem;
        }

        header p {
            color: var(--text-dim);
            font-size: 0.95rem;
        }

        .container {
            width: 100%;
            max-width: 480px;
        }

        .card {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
        }

        .card h2 {
            font-family: 'Space Grotesk', sans-serif;
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            text-align: center;
        }

        .form-group {
            margin-bottom: 1.25rem;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 0.5rem;
            color: var(--text-dim);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        input[type="text"] {
            width: 100%;
            background-color: var(--bg-input);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 0.75rem;
            color: var(--text-main);
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.2s;
        }

        input[type="text"]:focus {
            border-color: var(--teal);
        }

        button {
            width: 100%;
            background-color: var(--teal);
            color: #ffffff;
            border: none;
            border-radius: 6px;
            padding: 0.75rem;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s;
        }

        button:hover {
            background-color: var(--teal-hover);
        }

        .output-box {
            margin-top: 1.5rem;
            background-color: var(--bg-input);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 54px;
        }

        #output-code {
            font-family: 'JetBrains Mono', monospace;
            font-size: 1rem;
            word-break: break-all;
            padding-right: 10px;
        }

        .copy-btn {
            width: auto;
            padding: 0.4rem 0.8rem;
            font-size: 0.85rem;
            background-color: transparent;
            border: 1px solid var(--border);
            color: var(--text-dim);
        }

        .copy-btn:hover {
            background-color: var(--border);
            color: var(--text-main);
        }

        /* Access Restriction Styles */
        .restricted-card {
            text-align: center;
        }
        .restricted-card h2 {
            color: var(--error);
        }
        .restricted-card p {
            color: var(--text-dim);
            margin-bottom: 1.5rem;
            line-height: 1.5;
        }
        .link-btn {
            display: inline-block;
            width: 100%;
            text-align: center;
            background-color: var(--teal);
            color: white;
            text-decoration: none;
            padding: 0.75rem;
            border-radius: 6px;
            font-weight: 600;
            transition: background-color 0.2s;
        }
        .link-btn:hover {
            background-color: var(--teal-hover);
        }