:root {
    --fg: #1f2328;
    --muted: #59636e;
    --bg: #ffffff;
    --border: #d1d9e0;
    --accent: #0969da;
    --success-bg: #dafbe1;
    --success-border: #1a7f37;
    --failure-bg: #ffebe9;
    --failure-border: #cf222e;
    color-scheme: light;
}

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

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
    color: var(--fg);
    background: var(--bg);
}

header,
main {
    max-width: 40rem;
    margin: 0 auto;
    padding: 0 1rem;
}

header {
    padding-top: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.brand {
    font-weight: 600;
    color: var(--fg);
    text-decoration: none;
}

main {
    padding-top: 1.5rem;
    padding-bottom: 3rem;
}

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

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

label {
    font-weight: 600;
}

textarea,
input {
    width: 100%;
    padding: 0.5rem;
    font: inherit;
    border: 1px solid var(--border);
    border-radius: 6px;
}

textarea {
    min-height: 6rem;
    resize: vertical;
}

button {
    align-self: flex-start;
    padding: 0.5rem 1rem;
    font: inherit;
    font-weight: 600;
    color: #fff;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.notice {
    padding: 1rem;
    border: 1px solid;
    border-radius: 6px;
}

.notice.success {
    background: var(--success-bg);
    border-color: var(--success-border);
}

.notice.failure {
    background: var(--failure-bg);
    border-color: var(--failure-border);
}

blockquote {
    margin: 0;
    padding-left: 1rem;
    border-left: 3px solid var(--border);
    color: var(--muted);
    white-space: pre-wrap;
}

dl {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0.25rem 1rem;
}

dt {
    font-weight: 600;
}

dd {
    margin: 0;
}