body {
    margin: 0;
    padding: 20px;
    font-family: sans-serif;
    height: 100vh;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

h1{
    margin: 10px 10px 10px 10px;
    font-size: 18px;
    background-image: url(../favicon.png);
    background-size: 24px 24px;
    background-repeat: no-repeat;
    background-position: left center;
    padding-left: 32px;
}

header {
    margin: 0px;
    display: flex;
    align-items: center;
    margin-bottom: 0px;
    background-color: #c5d6fa;
}

h2{
    margin-top: 0;
    font-size: 16px;
}

.container {
    display: flex;
    max-width: 100%;
    gap: 20px;
    align-items: stretch;
    flex: 1;
}

.input-area {
    flex: 0 0 30%;
    min-width: 300px;
    display: flex;
    flex-direction: column;
}

#dslInput {
    width: 100%;
    font-family: monospace;
    font-size: 14px;
    padding: 10px;
    box-sizing: border-box;
}


.graph-area {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.graph-area h2 {
    margin-top: 0;
}

#graph {
    flex: 1;
    align-items: center;
    justify-content: left;
}

#graph svg {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: calc(100vh - 10em);
}

navigation {
    display: inline-flex;
    margin-bottom: 0px;
    gap: 10px;
}

navigation button {
    padding: 8px 16px;
    cursor: pointer;
}

#selectLoop {
    margin-bottom: 0px;
}

#selectLoop label {
    display: inline-block;
    margin-right: 15px;
    cursor: pointer;
}

/* スマートフォン・タブレット用（縦並び） */
@media (max-width: 1024px) {
    body {
        padding: 10px;
    }
    
    .container {
        flex-direction: column;
    }
    
    .input-area,
    .graph-area {
        flex: none;
        width: 100%;
        min-width: 0;
    }
    
    #dslInput {
        font-size: 12px;
        max-width: 100%;
    }
    
    navigation button {
        display: block;
        width: 100%;
        margin-bottom: 10px;
        margin-right: 0;
    }
    
    #selectLoop label {
        display: block;
        margin-bottom: 8px;
    }
}