:root {
            --primary: #f45454;
            --primary-hover: #f48954;
            --bg-dark: #0d0d0d;
            --card-bg: #1a1a1a;
            --text-main: #f0f0f0;
            --text-muted: #999;
            --input-bg: #252525;
            --border: #333;
        }

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

        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            padding: 1.5rem;
        }

        .container {
            max-width: 450px;
            width: 100%;
            background: var(--card-bg);
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            border: 1px solid var(--border);
        }

        h1 {
            color: #fff;
            margin-bottom: 0.5rem;
            font-size: 1.8rem;
            font-weight: 600;
            letter-spacing: -0.5px;
        }

        .subtitle {
            color: var(--text-muted);
            margin-bottom: 2rem;
            font-size: 0.95rem;
            line-height: 1.4;
        }

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

        label {
            display: block;
            margin-bottom: 0.5rem;
            color: #ccc;
            font-size: 0.85rem;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* Combined Handle/Domain Input */
        .handle-group {
            display: flex;
            align-items: center;
            background: var(--input-bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .handle-group:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(78, 170, 255, 0.2);
        }

        .at-symbol {
            padding-left: 0.75rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        input[type="text"],
        input[type="email"],
        input[type="password"],
        select {
            width: 100%;
            padding: 0.8rem;
            background: var(--input-bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            color: #fff;
            font-size: 1rem;
            font-family: inherit;
            transition: all 0.2s;
        }

        /* Overrides for handle layout */
        .handle-group input {
            border: none !important;
            flex: 1;
            padding-left: 0.5rem;
        }
        
        .handle-group select {
            border: none !important;
            width: auto;
            background: #333;
            cursor: pointer;
            border-left: 1px solid var(--border) !important;
            border-radius: 0;
            padding: 0 0.5rem;
            font-size: 0.85rem;
        }

        input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(78, 170, 255, 0.2);
        }

        .helper-text {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 0.4rem;
        }

        button[type="submit"] {
            width: 100%;
            padding: 1rem;
            margin-top: 1rem;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.1s, background 0.2s;
        }

        button[type="submit"]:hover {
            background: var(--primary-hover);
        }

        button[type="submit"]:active {
            transform: scale(0.98);
        }

        button:disabled {
            background: #444;
            color: #777;
            cursor: not-allowed;
        }

        /* Status Messages */
        .alert {
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            font-size: 0.9rem;
            display: none;
            line-height: 1.4;
        }
        .error { background: rgba(255, 68, 68, 0.15); color: #ff6b6b; border: 1px solid #ff4444; }
        .success { background: rgba(68, 255, 68, 0.1); color: #44ff44; border: 1px solid #44ff44; }

        .back-link {
            text-align: center;
            margin-top: 2rem;
        }

        .back-link a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.2s;
        }

        .back-link a:hover {
            color: var(--primary);
        }

        .loading-spinner {
            display: none;
            margin: 1rem auto 0;
            width: 20px;
            height: 20px;
            border: 3px solid rgba(78, 170, 255, 0.3);
            border-radius: 50%;
            border-top-color: var(--primary);
            animation: spin 1s ease-in-out infinite;
        }

        @keyframes spin { to { transform: rotate(360deg); } }