html, body {
    margin: 0;
    padding: 0;
}
body {
    font-family: "游ゴシック", YuGothic, "ヒラギノ角ゴ ProN W3", "Hiragino Kaku Gothic ProN", "メイリオ", Meiryo, "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #1d1b20;
    background-color: #5f8a9d;
    -webkit-text-size-adjust: 100%;
}

:root {
    --light-green: #f7feff;
    --green: #5f8a9d;
    --dark-green: #293b43;
    --border: #cac4d0;
}

.hidden {
    display: none !important;
}

/********** header **********/
header {
    background-color: #5f8a9d;
    padding: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header .logo-container {
    flex-grow: 0;
    flex-shrink: 0;
    height: 40px;
    width: auto;
}
header .logo-container img {
    height: 40px;
    width: auto;
    fill: #2b3e46;
    stroke: #2b3e46;
}
header .title-container {
    flex-grow: 1;
    flex-shrink: 1;
    padding-left: 10px;
    color: #fff;
}
header .logout-container {
    display: inline-block;
}
header .logout-container a {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 40px;
    color: #fff;
}
header .logout-container a span {
    white-space: nowrap;
    font-size: 0.8rem;
}

header #menu_button {
    height: 30px;
}

#menu_button svg,
#menu_close_button svg {
    color: #fff; 
    transition: all 0.3s ease;
}

#menu_button:hover svg,
#menu_close_button:hover svg {
    transform: scale(1.1);
}

/********** main **********/
main {
    background-color: #fff;
    padding: 5px 5px 20px 5px;
}

a {
    text-decoration: none;
    color: #096;
}

.headline {
    text-align: center;
    margin-top: 10px;
}

input[type=text] {
    border: 1px solid #999;
    background-color: #fff;
    padding: 10px 5px;
    border-radius: 5px;
    width: calc(100% - 12px);
    color: #333;
}
input[type=text]:focus {
    background-color: #ffc;
}
input[type=text].error {
    color: #f00;
}
.error-message {
    color: #f00;
    font-weight: bold;
    font-size: 0.8rem;
}
input[type=number] {
    border: 1px solid #999;
    background-color: #fff;
    padding: 10px 5px;
    border-radius: 5px;
    width: calc(100% - 12px);
    color: #333;
}
input[type=number]:focus {
    background-color: #ffc;
}
input[type=number].error {
    color: #f00;
}
.error-message {
    color: #f00;
    font-weight: bold;
    font-size: 0.8rem;
}


/********** back-to-home-container **********/
.back-to-home-container {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}
.back-to-home-container svg {
    stroke: #096;
}
.back-to-home-container a {
    text-decoration: underline;
}
.back-to-home-container .back-to-home-button {
    padding-left: 0px;
    padding-right: 0px;
}

/********** type0-container **********/
.type0-container {
    border: 1px solid var(--border);
    background-color: #f7feff;
    margin: 5px;
    padding: 10px;
    border-radius: 10px;
}
.type0-container .header {
    font-weight: bold;
}

/********** notice **********/
.notice-container {
    background-color: #F7FEFF;
    color: #3F3B26;
    border-radius: 5px;
    padding: 5px;
    margin-top: 10px;
}

/********** image-container **********/
.image-container {
    max-width: 100%;       
}
.image-container img {
    max-width: 100%;
    height: auto;  
    display: block;   
    margin: 0 auto; 
}

@media (max-width: 480px) {
    .type0-container {
        padding: 8px 10px;
        margin: 5px 8px;
    }

    .button-container {
        padding: 0 10px;
    }
}

/********** caution **********/
.caution-container {
    background-color: #FFD4CC;
    color: #3F2A26;
    border-radius: 5px;
    padding: 5px;
    margin-top: 10px;
}
.caution-container .caption {
    color: #ef5350;
    font-weight: bold;
    font-size: 1.1rem;
}

.caution-container .caption:before {
    content: '';
    display: inline-block;
    width: 1em;
    height: 1em;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23ef5350' class='bi bi-exclamation-triangle-fill' viewBox='0 0 16 16'%3E%3Cpath d='M8.982 1.566a1.13 1.13 0 0 0-1.96 0L.165 13.233c-.457.778.091 1.767.98 1.767h13.713c.889 0 1.438-.99.98-1.767L8.982 1.566zM8 5c.535 0 .954.462.9.995l-.35 3.507a.552.552 0 0 1-1.1 0L7.1 5.995A.905.905 0 0 1 8 5zm.002 6a1 1 0 1 1 0 2 1 1 0 0 1 0-2z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
}

/********** button **********/
.button-container {
    margin-top: 10px;
    display: flex;
    justify-content: center;
}
.button-container > * {
    margin: 0px 5px;
}
.button {
    border: 1px solid transparent;
    border-radius: 100vh;
    padding: 10px 20px;
    text-align: center;
    min-width: 110px;
    font-size: 1rem;
}
a.button {
    display: inline-block;
}
.button0 {
    border-color: #293b43;
    background-color: #293b43;
    color: #FFF;
}
.button1 {
    border-color: #5f8a9d;
    background-color: #fff;
    color: #5f8a9d;
}
.button2 {
    border-color: #fff;
    background-color: #9B1F1F;
    color: #fff;
}