body {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        .login-container {
            background: rgba(30, 41, 59, 0.8);
            border-radius: 15px;
            padding: 2rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
        }
        .logo {
            text-align: center;
            margin-bottom: 2rem;
        }
        .logo-text {
            font-size: 2rem;
            font-weight: 700;
            background: linear-gradient(90deg, #6366f1, #10b981);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .alert {
            animation: fadeIn 0.3s ease-in;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }