body {
            font-family: 'Segoe UI', sans-serif;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            background: linear-gradient(135deg, #1e1e2f, #16213e);
            background-attachment: fixed;
            color: #e0e0e0;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .login-container {
            background: rgba(30, 30, 50, 0.85);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.6);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(100, 100, 200, 0.2);
            width: 380px;
            text-align: center;
        }
        h2 {
            color: #a0a0ff;
            margin-bottom: 30px;
            font-size: 28px;
        }
        input[type="text"], input[type="password"] {
            width: 100%;
            padding: 14px 16px;
            margin: 12px 0;
            background: rgba(50, 50, 80, 0.6);
            border: none;
            border-radius: 12px;
            color: white;
            font-size: 16px;
            box-sizing: border-box;
        }
        input::placeholder {
            color: #aaa;
        }
        button {
            width: 100%;
            padding: 14px;
            margin-top: 20px;
            background: linear-gradient(135deg, #8e54e9, #4776e6);
            color: white;
            border: none;
            border-radius: 25px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0,0,0,0.3);
            transition: all 0.3s ease;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.5);
        }
        .error {
            color: #ff6b6b;
            margin-top: 15px;
            font-size: 14px;
        }
        .success {
            color: #56ab2f;
            margin-top: 15px;
            font-size: 14px;
        }
        .register-link {
            margin-top: 25px;
            display: block;
            color: #a0a0ff;
            text-decoration: none;
            font-size: 15px;
        }
        .register-link:hover {
            text-decoration: underline;
        }