body {
            font-family: 'Inter', sans-serif;
            background-color: #111827;
            background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.05) 1px, transparent 0);
            background-size: 2rem 2rem;
        }
        .loader {
            border: 4px solid #374151; /* gray-700 */
            border-top: 4px solid #3b82f6; /* blue-500 */
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
        }
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        .fade-in {
            animation: fadeIn 0.8s ease-in-out;
        }
       .fade-in-slow {
            animation: fadeIn 1.2s ease-in-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(15px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .input-error {
            border-color: #ef4444 !important;
            animation: shake 0.5s;
        }
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }
        .gradient-text {
            background: linear-gradient(to right, #a855f7, #60a5fa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-fill-color: transparent;
        }
        .btn-glow {
            box-shadow: 0 0 5px rgba(59, 130, 246, 0), 0 0 10px rgba(59, 130, 246, 0);
            transition: box-shadow 0.3s ease-in-out, transform 0.3s ease-in-out;
        }
        .btn-glow:hover {
            transform: scale(1.05);
            box-shadow: 0 0 15px rgba(59, 130, 246, 0.5), 0 0 25px rgba(59, 130, 246, 0.3);
        }