.glass-card {
            background: rgba(24, 24, 27, 0.7);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .text-gradient {
            background: linear-gradient(to right, #8B5CF6, #6366F1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .step-container {
            display: none;
        }
        .step-container.active {
            display: block;
            animation: fadeIn 0.5s ease-out forwards;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .pulse-loader {
            display: inline-block;
            position: relative;
            width: 80px;
            height: 80px;
        }
        .pulse-loader div {
            position: absolute;
            border: 4px solid #8B5CF6;
            opacity: 1;
            border-radius: 50%;
            animation: pulse-loader 1.5s cubic-bezier(0, 0.2, 0.8, 1) infinite;
        }
        .pulse-loader div:nth-child(2) {
            animation-delay: -0.5s;
        }
        @keyframes pulse-loader {
            0% { top: 36px; left: 36px; width: 0; height: 0; opacity: 1; }
            100% { top: 0px; left: 0px; width: 72px; height: 72px; opacity: 0; }
        }
        .plan-card.selected {
            border-color: #8B5CF6;
            background: rgba(139, 92, 246, 0.1);
            box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
        }
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }
        .shake { animation: shake 0.3s ease-in-out; border-color: #ef4444 !important; }