/* تنظیمات عمومی */
body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f4f9;
    color: #333;
    text-align: center;
}

/* استایل بخش لودینگ */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    z-index: 1000;
}

.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #ffffff;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* استایل فرم ثبت‌نام */
.hidden {
    display: none;
}

#registration-form {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.form-container {
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 20px 30px;
    width: 90%;
    max-width: 400px;
}

.form-container h1 {
    margin-bottom: 20px;
    color: #6a11cb;
}

.form-container form {
    display: flex;
    flex-direction: column;
}

.form-container label {
    text-align: left;
    margin-bottom: 5px;
}

.form-container input {
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
}

.form-container button {
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: #ffffff;
    padding: 10px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}

.form-container button:hover {
    background: linear-gradient(135deg, #2575fc, #6a11cb);
}

.form-container p {
    margin-top: 10px;
    font-size: 14px;
}