html {
    height: 100vh;
}

body {
    background-image: url("../assets/background.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    overflow: hidden;
}

#back-btn {
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    min-width: 30px;
    min-height: 30px;
    max-width: 50px;
    max-height: 50px;
    width: 6vw;
    height: 6vw;
    box-sizing: border-box;
    padding: 2%;
    font-size: 20px;
    color: white;
    left: 4%;
    top: 4%;
    border: 2px solid rgba(1, 33, 130, 0.6);
    border-radius: 12px;
}

#back-btn:hover {
    cursor: pointer;
    background-color: rgba(1, 33, 130, 0.2);
}

.error-message {
    font-family: "DM Sans", sans-serif;
    font-optical-sizing: auto;
    font-weight: 500;
    font-style: normal;
    font-size: 20px;
    display: none;
    position: absolute;
    bottom: 12%;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px;
    background-color: #E3F2FD;
    color: #1565C0;
    text-shadow: 0 0 1px #FFFFFF;
    border: 2px solid #64B5F6;
    border-radius: 5px;
    z-index: 1000;
}

.container {
    position: relative;
    width: 880px;
    max-width: 92vw;
    height: 700px;
    max-height: 92vh;
    padding: 16px;
    box-sizing: border-box;
    background-color: rgba(22, 49, 101, 0.8);
    border-radius: 24px;
    display: flex;
}

.split {
    display: flex;
    flex: 1;
    height: 100%;
    overflow: hidden;
    justify-content: center;
    align-items: center;
    background-color: rgba(17, 37, 76, 0.9);
}

.left {
    border-top-left-radius: 24px;
    border-bottom-left-radius: 24px;
}

.register-form {
    font-family: "Libre Baskerville", serif;
    display: flex;
    flex-direction: column;
    padding: 0 18px;
    width: 100%;
    height: 99%;
    align-items: center;
    overflow-y: auto;
}

.register-form::-webkit-scrollbar {
    width: 5px;
}

.register-form::-webkit-scrollbar-track {
    background: #0053ac;
    border-radius: 18px;
}

.register-form::-webkit-scrollbar-thumb {
    background: #ff5cb3ba;
    border-radius: 18px;
}

.register-form::-webkit-scrollbar-thumb:hover {
    background: #ff5cb3;
}

.register-form h1 {
    display: flex;
    align-items: center;
    color: aliceblue;
    padding: 0;
    margin: 0;
    text-align: center;
    margin: 20px 0;
    font-size: 24px;
}

.form-group {
    width: 90%;
    margin-bottom: 12px;    
}

.form-group label {
    color: aliceblue;
    font-size: 18px;
    display: block;
    margin-bottom: 5px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 8px;
    border: 3px solid rgb(45, 155, 185);
    border-radius: 5px;
    font-family: "Libre Baskerville", serif;
    font-size: 16px;
    box-sizing: border-box;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #ff5cb3;
    box-shadow: 0 0 5px rgba(255, 92, 179, 0.5);
}

.radio-group {
    display: flex;
    justify-content: space-between;
}

.radio-group input[type="radio"] {
    display: none;
}

.radio-group label {
    margin-top: 1%;
    cursor: pointer;
    text-align: center;
    padding: 6px;
    width: 25%;
    border: 2px solid rgb(45, 155, 185);
    border-radius: 6px;
    transition: background-color 0.3s;
}

.radio-group input[type="radio"]:checked + label {
    background-color: rgb(45, 155, 185);
    box-shadow: 0 0 8px #008cff;
}

textarea {
    resize: vertical;
}

.phone-number-group {
    display: flex;
}

#countryCode {
    width: 80px;
}

#otherCountryCode {
    width: 80px;
    display: none;
}

#phoneNumber {
    margin-left: 4px;
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 10px;
}

.checkbox-group label {
    font-size: 16px;
}

.register-button-container {
    position: sticky;
    bottom: 4px;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.register-button {
    height: 48px;
    width: 140px;
    font-size: 18px;
    background-color: #ff5cb3;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-family: "Libre Baskerville", serif;
    cursor: pointer;
    transition: background-color 0.3s;
    text-align: center;
}

.register-button:hover {
    background-color: #c71585;
}

.right {
    border-top-right-radius: 24px;
    border-bottom-right-radius: 24px;
}

.right img {
    height: 100%;
    width: 100%;
    box-sizing: border-box;
    border: 8px solid rgba(17, 37, 76, 0.99);
    border-top-right-radius: 24px;
    border-bottom-right-radius: 24px;
    object-fit: cover;
}

@media (max-width: 835px) {
    .form-group label {
        font-size: 0.9rem;
    }
    .checkbox-group label {
        font-size: 0.8rem;
    }
    .form-input,
    .form-textarea {
        font-size: 0.9rem;
    }
    .radio-group label {
        font-size: 2.2vw;
    }
}

@media (max-width: 640px) {
    .register-form h1 {
        font-size: 1.2rem;
    }
    .container {
        height: 85vh;
    }
    .register-button {
        height: 40px;
        width: 132px;
        font-size: 1rem;
    }
}

@media (max-width: 550px) {
    .container {
        width: 90vw;
        height: 80vh;
        flex-direction: column-reverse;
    }
    .left {
        border-top-left-radius: 0px;
        border-bottom-left-radius: 24px;
        border-bottom-right-radius: 12px;
    }
    .right {
        flex: 0.5;
        border-top-right-radius: 24px;
        border-bottom-right-radius: 0px;
        border-top-left-radius: 24px;
    }
    .right img {
        height: 100%;
        width: 100%;
        box-sizing: border-box;
        border: 8px solid rgba(17, 37, 76, 0.99);
        border-radius: 24px;
    }
    .error-message {
        font-size: 0.9rem;
    }
    #back-btn {
        top: 28vh;
        left: 6vw;
        min-height: 40px;
        min-width: 40px;
    }
}

@media (max-width: 400px) {
    .right {
        flex: 0.3;
    }
    .error-message {
        font-size: 0.8rem;
    }
    #back-btn {
        top: 21vh;
        left: 7vw;
        min-height: 40px;
        min-width: 40px;
    }
}