:root {
    --blue-btn-color: #4e91fc;
    --blue-btn-hovered-color: #2f6fe0;
    --dark-blue-btn-color: #3768b7;
    --light-gray-text-color: rgb(197, 204, 211);
    --image-shadow-color: rgba(0, 0, 0, 0.329);
    --close-btn-background-color: rgb(217, 217, 217);
    --close-btn-text-color: rgb(83, 88, 93);
    --dark-gray-text-color: rgb(47, 47, 47);
    --user-login-text-color: rgb(115, 115, 115);
    --user-login-url-text-color: rgb(65, 92, 143);
    --link-text-color: #2d5ba4;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 0;
    margin: 0;
    background-color: aliceblue;
}


.header-btns {
    width: max-content;

    position: absolute;
    top: 10px;
    right: 10px;

    font-size: 20px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    .btn {
        border: none;
        height: fit-content;
        min-width: fit-content;
        font-size: 20px;

        padding: 7px 12px;
        border-radius: 5px;
        cursor: pointer;
        transition: all 300ms ease-in;

        display: flex;
        justify-content: center;
        align-items: center;

        text-decoration: none;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    }
    
    /* buttons */
    .login-btn {
        margin-right: 10px;
        background-color: white;
        color: var(--dark-gray-text-color);
    }
    .login-btn:hover {
        background-color: var(--light-gray-text-color);
    }

    .signup-btn {
        background-color: var(--blue-btn-color);
        color: white;
    }
    .signup-btn:hover {
        background-color: var(--dark-blue-btn-color);
    }

    .profile-btn {
        margin-right: 10px;
        background-color: white;
        color: var(--dark-gray-text-color);
    }
    .profile-btn:hover {
        background-color: var(--light-gray-text-color);
    }
}

.main-wrap {
    height: fit-content;
    display: flex;
    align-items: center;
    flex-direction: column;
    .main-title {
        width: 100%;
        text-align: center;
        margin: 60px 0;
        color: #333;
        font-size: 40px;
    }

    .container {
        width: 500px;
        max-width: calc(100% - 40px);
        height: fit-content;
        
        padding: 20px;
        margin-top: 5vh;
        margin-bottom: 10vh;

        background: linear-gradient(200deg,rgb(157, 217, 241) 0%, rgb(203, 237, 244) 70%);
        border-radius: 16px;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        text-align: center;

        .title {
            margin-bottom: 20px;
            font-size: 30px;
            font-weight: 400;
        }
    }

    .main-form {
        width: 100%;
        display: flex;
        flex-direction: column;

        flex-direction: column;
        align-items: center;
    }

    #id_file {
        width: 0;
        height: 0;
        opacity: 0;
    }

    .custom-file-upload {
        width: 100%;
        height: 20vh;
        font-size: 25px;

        padding-top: 10px;
        padding-bottom: 10px;
        border: 2px dashed var(--blue-btn-color);

        display: inline-block ;
        border-radius: 10px;
        /* background-color: #fafafa; */
        background-color: rgb(204, 238, 252);
        display: flex;
        align-items: center;
        justify-content: center;
        
        cursor: pointer;
        transition: border-color 0.3s ease;
    }

    .custom-file-upload:hover {
        border-color: #666;
    } 

    .custom-file-upload.dragover {
        border-color: #666;
    }

    .submit-btn.hidden {
        display: none;
    }
    
    /* download button */
    .download-btn-wrapp {
        width: 100%;
        .download-btn {
            width: 100%;
            margin-top: 12px;
        }

        .download-btn.hidden {
            display: none;
        }
    }

    .loaded-file { 
        color: #666;
        font-size: 18px;
    }
    .loaded-file.invalid-type {
        color: red;
    }

    .error-box {
        color: red;
        margin-bottom: 10px;
        font-size: 18px;
    }
}

.other-info {
    width: fit-content;
    padding: 10px;

    display: flex;
    flex-direction: column;

    .point {
        max-width: 1000px;
        margin: 10px 0;
        color: var(--dark-gray-text-color);
    }

    .main-title {
        position: relative;
        left: 50%;
        translate: -50%;
        font-size: 40px;
        font-weight: 500;
        margin: 30px 0;
        text-align: center;
    }

    .title {
        font-size: 30px;
        margin: 15px 0;
        
    }
    .text {
        margin-left: 50px;
        font-size: 25px;
    }
    .list {
        margin-left: 50px;
        font-size: 25px;
    }

    .quest-answer {
        margin-left: 50px;
        .question {
            font-size: 28px;
            font-weight: 500;
            text-align: left;
        }
        .answer {
            font-size: 25px;
        }
    }
}

@media (max-width: 800px) {
    .other-info  {
        .point.main-title {
            margin-left: 0px;
            font-size: 30px;
            font-weight: 700;
            text-align: left;
        }
        .point.title {
            margin-left: 0px;
        }
        .point.text {
            margin-left: 0px;
            text-align: justify;
        }
        .point.list {
            margin-left: 0px;
        }
        .point.quest-answer {
            margin-left: 0px;
            text-align: justify;
        }
    }
}

.footer {
    padding: 30px;
    flex-direction: row;
    margin-top: 40px;
    width: calc(100% - 60px);
    height: 70px;
    background: linear-gradient(200deg,rgb(157, 217, 241) 0%, rgb(203, 237, 244) 70%);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;

    .links {
        width: 100%;
        height: fit-content;
        font-size: 20px;
        display: flex;
        gap: 20px;

        a {
            color: var(--link-text-color);
            text-decoration: none;
        }
    }
}
/* common */
.blue-btn {
    width: 100%;
    height: 50px;

    padding-top: 10px;
    padding-bottom: 10px;

    border-radius: 10px;
    border: none;

    background-color: var(--blue-btn-color);
    color: aliceblue;

    text-align: center;
    font-size: 25px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.blue-btn:hover {
    background-color: var(--blue-btn-hovered-color);
}

.layers-separator {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
}

.layers-separator.hidden {
    display: none;
}

/* ad */
.ad-wrapper {
    width: fit-content;
    position: fixed;
    left: 50%;
    top: 50%;
    translate: -50% -50%;

    box-shadow: 0 0 0 max(100vw, 100vh) var(--image-shadow-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    opacity: 100;

    transition: all 1s;

    z-index: 9999; /* higher than all other elements */
    pointer-events: auto; /* ensure this div captures clicks */

    .image {
        display: block;
        object-fit:cover;
        max-width: 100vw;
        max-height: 100vh;
        transition: all 50ms;
        width: 100vh;
    }

    .gif {
        display: block;
        object-fit:cover;
        max-width: 100vw;
        max-height: 100vh;
        transition: all 50ms;
        width: 100vh;
    }

    .video {
        display: block;
        object-fit:cover;
        max-width: 100vw;
        max-height: 100vh;
        transition: all 50ms;
        width: 100vh;
    }

    .close-btn {
        cursor: pointer;
        position: absolute;
        height: fit-content;
        left: calc(100% - 10px);
        top: 10px;
        translate: -100% -0;
        padding: 4px 10px;
        font-size: 20px;
        border: none;
        border-radius: 50px;
        background-color: var(--close-btn-background-color);
        display: flex;
        align-items: center;
        justify-content: center;

        color: var(--close-btn-text-color);


        .close {
            height: fit-content;
        }
        
        .close.hidden {
            display: none;
        }
    }
    
    .progress-title {
        color: #666;
        font-weight: 400;
    }

    .progress-title.hidden {
        display: none;
    }
}

/* animation */
.dot {
    opacity: 0;
    animation: blink 1.5s infinite;
}

.dot:nth-child(1) {
    animation-delay: 0s;
}

.dot:nth-child(2) {
    animation-delay: 0.3s;
}

.dot:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes blink {
    0%, 20% {
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

.ad-wrapper.hidden {
    opacity: 0;
    pointer-events: none;
}

.user-register-to-load-more-wrap {
    position: fixed;
    left: 50%;
    top: 50%;
    translate: -50% -50%;
    
    box-shadow: 0 0 0 100vw var(--image-shadow-color);
    
    width: 500px;
    max-width: calc(100% - 100px);

    font-size: 40px;
    font-weight: 600;

    padding: 50px;
    background-color: white;
    color: var(--user-login-text-color);
    border-radius: 16px;
    text-align: center;

    a {
        color: var(--user-login-url-text-color);
    }
}

.user-register-to-load-scaned-wrap {
    position: fixed;
    left: 50%;
    top: 50%;
    translate: -50% -50%;
    box-shadow: 0 0 0 100vw var(--image-shadow-color);
    
    width: 500px;
    max-width: calc(100% - 100px);

    font-size: 40px;
    font-weight: 600;

    padding: 50px;
    background-color: white;
    color: var(--user-login-text-color);
    border-radius: 16px;
    text-align: center;

    a {
        color: var(--user-login-url-text-color);
    }
}
.user-register-to-load-scaned-wrap.hidden {
    display: none;
}

@media (max-width: 600px) {
    .custom-file-upload {
        width: 100%
    }
    .blue-btn {
        width: 100%;
        font-size: 20px;
    }
    /* .ad-wrapper {
        width: 100%;
    } */
}