* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .login-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(15px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 16px;
            padding: 40px 35px;
            width: 400px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }

        .login-card h1 {
            color: #fff;
            text-align: center;
            margin-bottom: 10px;
            font-size: 1.8rem;
        }

        .login-card p.subtitle {
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
            margin-bottom: 30px;
            font-size: 0.9rem;
        }

        .error-msg {
            background: rgba(255, 59, 48, 0.15);
            border: 1px solid rgba(255, 59, 48, 0.4);
            color: #ff6b6b;
            padding: 12px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 0.9rem;
            text-align: center;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        .form-group input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 1rem;
            transition: border 0.3s, box-shadow 0.3s;
            outline: none;
        }

        .form-group input::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }

        .form-group input:focus {
            border-color: #7c5cfc;
            box-shadow: 0 0 0 3px rgba(124, 92, 252, 0.25);
        }

        .btn-login {
            width: 100%;
            padding: 14px;
            border: none;
            border-radius: 8px;
            background: linear-gradient(135deg, #7c5cfc, #a855f7);
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(124, 92, 252, 0.5);
        }

        .btn-login:active {
            transform: translateY(0);
        }