/* colors */
:root {
    --bg: #eee;
    --fg: black;
    --link: #00a;
}
@media screen and (prefers-color-scheme: dark) {
    :root {
        --bg: #111;
        --fg: #ddd;
        --link: #66f;
    }
}

/* basic elements */
*, *::before, *::after {
    box-sizing: border-box;
}

a {
    color: var(--link);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

li {
    margin-bottom: 0.5rem;
}

button, .button {
    display: inline-block;
    cursor: pointer;
    user-select: none;
    text-decoration: none !important;
    padding: 0.5em 1em;
    border: none;
    border-radius: 2px;
    line-height: 1.15;
    text-align: center;
    color: black;
    background-color: #ccc;
    white-space: nowrap;
}
button.primary, .button.primary {
    background-color: var(--link);
    color: white;
}
button.danger, .button.danger {
    background-color: #a00;
    color: white;
}
button:hover, .button:hover {
    filter: brightness(90%);
}
button[disabled], .button[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}
table button, table .button {
    padding: 0.2rem 0.5rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="tel"],
input[type="date"],
input[type="search"],
select, textarea {
    background-color: var(--bg);
    color: var(--fg);
    border: var(--fg) 1px solid;
    border-radius: 2px;
    padding: 0.4rem;
}
input:disabled {
    background-color: #8888;
}
@media screen and (prefers-color-scheme: dark) {
    ::-webkit-calendar-picker-indicator {
        filter: invert(93.33);
    }
}

.form-row {
    display: grid;
    grid-template-columns: auto;
    align-items: baseline;
    gap: 0.5rem 1rem;
    margin: 0.5rem 0 1rem;
}
.form-row > label:first-child {
    grid-column-start: 1;
    font-size: 1.1rem;
}
@media screen and (min-width: 568px) {
    .form-row {
        grid-template-columns: 8rem auto;
    }
    .form-row > * {
        grid-column-start: 2;
    }
    .form-row > label:first-child {
        text-align: right;
    }
}
.form-row > :nth-child(n+3) {
    filter: contrast(0.5);
    font-size: 0.9rem;
}
.form-row .sub-row {
    margin-bottom: 0.5rem;
}

div.infobox {
    background-color: #7ce5;
    border-radius: 2px;
    width: 100%;
    padding: 1rem;
    margin: 1rem 0;
}
div.infobox > :first-child {
    margin-top: 0;
}
div.infobox > :last-child {
    margin-bottom: 0;
}
div.infobox.warning {
    background-color: #fa75;
}
div.infobox.error {
    background-color: #d885;
}

details summary {
    margin: 1em 0;
}

table {
    display: block;
    border-collapse: collapse;
    line-height: 2rem;
    text-align: left;
    white-space: nowrap;
    overflow-x: auto;
}
table tr {
    vertical-align: top;
}
table tr > * {
    padding: 0 0.5rem;
    border-bottom: #bbb5 solid 1px;
}
table tr a {
    padding: 0;
}
table th {
    font-weight: bold;
    white-space: nowrap;
}
table thead tr > * {
    border-bottom: var(--link) solid 2px;
}
table tfoot tr > * {
    border-top: var(--link) solid 2px;
}
table td.wrap {
    word-break: break-all;
    white-space: normal;
}
table tbody tr:hover,
table tbody tr:target {
    background-color: #bbb5;
}
table form {
    display: inline-block;
}

span.price {
    display: inline-block;
    text-align: right;
    white-space: nowrap;
}
table span.price {
    width: 100%;
}
span.price span {
    float: left;
}

/* layout */
body {
    min-height: 100vh;
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-flow: column nowrap;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--fg);
    background-color: var(--bg);
}
body.debug {
    background-image:  linear-gradient(#f003 1px, transparent 1px), linear-gradient(to right, #f003 1px, transparent 1px);
    background-size: 1rem 1rem;
}
body.debug > header {
    background-color: darkred;
    color: white;
    text-align: center;
    padding: 1rem;
}
body > * {
    padding: 0 1rem;
}
main {
    margin: auto 0;
}

h1 .status {
    display: inline-block;
    border-radius: 2px;
    padding: 0.2rem 0.5rem;
    color: white;
    font-size: 0.8rem;
}
h1 .status.registered {
    background-color: #0b0;
}
h1 .status.not-registered {
    background-color: #b00;
}
h1 .status.arrived {
    background-color: #d70;
}

nav, nav > div {
    display: flex;
    flex-flow: row wrap;
    row-gap: 0.5rem;
}
nav > div {
    flex: 1 0 fit-content;
}
nav div.spacer {
    flex: 10;
    pointer-events: none;
}
nav a.button {
    border-radius: 0;
    border-right: black solid 1px;
    padding: 0.6rem;
    flex: 1 0 fit-content;
}
nav a.button:first-of-type {
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
}
nav a.button:last-of-type {
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
    border-right: none;
}

footer {
    font-style: italic;
    filter: contrast(80%);
}