body {
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            font-family: 'Segoe UI', sans-serif;
            height: 100vh;
            margin: 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .brand {
            text-align: center;
            color: white;
            margin-bottom: 30px;
        }

        .brand h1 {
            font-size: 36px;
            font-weight: 700;
            margin: 0;
            letter-spacing: 1px;
        }

        .brand h3 {
            font-size: 18px;
            font-weight: 400;
            margin-top: 8px;
            color: #dce3f5;
            letter-spacing: 0.5px;
        }

        .login-container {
            background-color: white;
            padding: 40px 30px;
            border-radius: 12px;
            box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
            width: 320px;
            text-align: center;
        }

        .login-container h2 {
            margin-bottom: 25px;
            color: #1e3c72;
            font-weight: 600;
        }

        .login-input {
            width: calc(100% - 20px);
            padding: 10px;
            margin: 10px auto;
            display: block;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 14px;
        }

        .login-input:focus {
            outline: none;
            border-color: #2a5298;
            box-shadow: 0 0 5px rgba(42, 82, 152, 0.25);
        }

        .login-btn {
            background-color: #1e3c72;
            color: white;
            border: none;
            padding: 14px 0;
            border-radius: 6px;
            cursor: pointer;
            width: 100%;
            margin-top: 15px;
            font-size: 16px;
            letter-spacing: 0.5px;
            transition: background 0.3s ease, transform 0.1s ease;
        }

        .login-btn:hover {
            background-color: #16315a;
            transform: scale(1.01);
        }

        .error {
            color: red;
            margin-top: 15px;
            display: block;
            font-size: 13px;
        }