/* Анимированный градиентный фон */
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            margin: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
            background-size: 400% 400%;
            animation: gradient 15s ease infinite;
            color: white;
        }

        @keyframes gradient {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        .container {
            text-align: center;
            background: rgba(255, 255, 255, 0.1);
            padding: 50px;
            border-radius: 20px;
            backdrop-filter: blur(10px); /* Эффект матового стекла */
            box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
            border: 1px solid rgba(255, 255, 255, 0.18);
            max-width: 400px;
            width: 90%;
        }

        h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }

        p {
            font-size: 1.1rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }

        .p-reg-auth {
        margin-bottom: 5px;
        }

        .tip {
            font-style: italic;
        }

        .btn {
            display: inline-block;
            padding: 15px 35px;
            background: white;
            color: #23a6d5;
            text-decoration: none;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: bold;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            border: 0px;
            cursor: pointer;
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.2);
            background: #f8f9fa;
            color: #e73c7e;
        }

        /* Иконка для кнопки */
        .btn i {
            margin-right: 10px;
        }


        /* --- Стили для модального окна обратной связи --- */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0; top: 0; width: 100%; height: 100%;
            background-color: rgba(0,0,0,0.6);
            backdrop-filter: blur(8px);
        }
        .modal-content {
            background: white;
            margin: 10% auto;
            padding: 30px;
            border-radius: 25px;
            width: 90%;
            max-width: 400px;
            color: #333;
            text-align: center;
            box-shadow: 0 10px 40px rgba(0,0,0,0.3);
            position: relative;
        }
        .modal-content h3 {
            margin-top: 0;
            color: #23a6d5;
        }
        textarea {
            width: 100%;
            height: 120px;
            margin: 15px 0;
            border-radius: 15px;
            border: 2px solid #eee;
            padding: 12px;
            font-family: inherit;
            box-sizing: border-box;
            resize: none;
            font-size: 1rem;
        }
        textarea:focus {
            outline: none;
            border-color: #23a6d5;
        }
        .send-btn {
            background: linear-gradient(to right, #23a6d5, #23d5ab);
            color: white;
            width: 100%;
        }
        .close-btn {
            background: none;
            border: none;
            color: #999;
            cursor: pointer;
            margin-top: 15px;
            font-size: 0.9rem;
            text-decoration: underline;
        }

        .btn-mini {
            display: inline-block;
            padding: 8px 25px;
            background: white;
            color: #23a6d5;
            text-decoration: none;
            border-radius: 30px;
            font-weight: bold;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            border: 0px;
            cursor: pointer;
        }


        .input-reg-auth {
        width: 100%;
        height: 32px;
        margin: 10px 0;
        border-radius: 15px;
        border: 2px solid #eee;
        padding: 0px 15px;
        font-family: inherit;
        box-sizing: border-box;
        resize: none;
        font-size: 16px;
        }