@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,100..900;1,100..900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100..900&display=swap');

:root {
    --background-color: #ffffff;
    --base-color: #e3f2fd;
    --main-color: #3498db;
    --accent-color: #FE483B;
    --accent-color-thin: #f8cecb;
    --text-color-default: #1f1f1f;
    --text-color-white: #f1f1f1;
    --text-color-link: #3498db;
    --sub-color: #a3bcd6;
}

* {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    box-sizing: border-box;
}

html {
    background-color: var(--base-color);
    box-sizing: border-box;
    margin: 0;
}

body {
    width: stretch;
    margin: 0;
    color: var(--text-color-default);
}

header {
    margin: 0;
    border-radius: 0;
    background-color: var(--main-color);
    color: var(--text-color-white);
    width: stretch;
    text-align: center;
    padding: 0.5rem;
}

header h1 {
    margin: 2rem 0.5rem;
    color: var(--text-color-white);
}

header a:hover {
    color: var(--text-color-white);
}

h1 {
    padding: 1rem;
}

main {
    margin: 0 auto auto;
    max-width: 960px;
}

footer {
    width: stretch;
    padding: 1rem 1.5rem;
    background-color: var(--main-color);
    color: var(--text-color-white);
}

footer a {
    color: var(--text-color-white);
}

footer a:hover {
    color: var(--text-color-white);
}

::selection,
::-moz-selection {
    color: var(--text-color-white);
    background: var(--main-color);
}

h1 a {
    color: var(--text-color-white);
}

.header__breadcrumb a {
    color: var(--text-color-white);
    white-space: nowrap;
}

.header__breadcrumb a::after {
    content: ' / ';
    margin: 0 0.5rem;
}

i {
    width: 1.5rem;
    text-align: center;
    margin-right: 0.5rem;
}

.main__classlist iframe {
    width: 400px;
    height: 300px;
}

a {
    color: var(--text-color-link);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-color);
}

a[href^="http"]:after,
a[href^="//"]:after {
    margin-left: 3px;
    font: var(--fa-font-solid);
    content: '\f08e';
}

.table-container {
    width: calc(100% - 2rem);
    overflow: auto;
}

.table-container th,
.table-container td {
    min-width: 10rem;
}

table {
    box-sizing: border-box;
    border-spacing: 2px;
    width: 100%;
    table-layout: auto;
    margin: auto;
}

th,
td {
    width: fit-content;
    text-align: center;
    border-top: 2px dashed var(--text-color-default);
    padding: 0.5rem 1rem;
    white-space: nowrap;
}

th {
    border: 2px dashed var(--text-color-default);
    border-bottom: none;
}

tr td:nth-child(3),
tr td:nth-child(4) {
    white-space: normal;
}

input,
textarea {
    color: var(--text-color-default);
    background-color: var(--background-color);
    padding: 0.5rem;
    border-radius: 5px;
    box-shadow: 0px 0px 5px -1px rgba(0, 0, 0, 0.2) inset;
    border: 1px solid var(--main-color);
    margin: 0.5rem;
}

textarea {
    vertical-align: top;
    width: 20rem;
    height: 3rem;
}

button {
    color: var(--text-color-white);
    background-color: var(--main-color);
    border-radius: 5px;
    border: 1px solid var(--base-color);
    margin: 0.5rem;
    transition: color 0.3s ease, background-color 0.3s ease;
}

button:active {
    color: var(--text-color-white);
    background-color: var(--accent-color);
}

.faster {
    color: var(--accent-color);
}

.pochimon {
    filter: drop-shadow(0px 0px 16px rgba(0, 0, 0, 0.6));
    margin: 0;
    transition: all 0.3s ease;
}

.pochimon:active {
    transform: scale(0.9);
}

.pochimon__container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-direction: row;
    font-size: 1.5rem;
}

.pochimon__container img {
    width: 100px;
    margin: 0 1rem;
}

section {
    background-color: #ffffff;
    border-radius: 1rem;
    margin: 2rem auto;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
    padding-bottom: 1rem;
}

section h2 {
    display: block;
    color: var(--text-color-white);
    background-color: var(--main-color);
    width: 100%;
    margin: 0;
    margin-bottom: 1rem;
    border-top-left-radius: 1rem;
    border-top-right-radius: 1rem;
    padding: 1.5rem 1.5rem;
}

section>*:not(h2, p) {
    margin-left: 1rem;
    margin-right: 1rem;
}

section p {
    margin: auto 1rem;
}

section.highlight {
    background-color: var(--accent-color-thin);
}

section.highlight h2 {
    background-color: var(--accent-color);
}

main h1 {
    background-color: var(--main-color);
    color: var(--text-color-white);
    border-radius: 10px;
}

.main__student table{
    width: calc(100% - 2rem);
}

main>a {
    display: block;
    width: fit-content;
    margin: 1rem 0;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: 5px;
}

.thread-item {
    display: block;
    width: 100%;
    padding: 0.5rem 1rem;
}

code {
    background-color: var(--base-color);
    padding: 0.2rem 0.4rem;
    border-radius: 5px;
    font-family: 'Courier New', Courier, monospace;
}

/* タブレット対応 */
@media (max-width: 960px) {
    main {
        margin-left: 0.5rem;
        margin-right: 0.5rem;
    }
}

/* スマホ対応 */
@media (max-width: 428px) {
    header h1 {
        margin: 0.5rem;
        font-size: 1.5rem;
    }

    table {
        overflow: auto;
    }

    th,
    td {
        padding: 0.3rem 0.5rem;
    }

    .main__classlist iframe {
        width: calc(100% - 2rem);
    }

    textarea {
        width: 100%;
    }
}