:root {
    --bg: #f6f7f9;
    --surface: #ffffff;
    --ink: #16181d;
    --muted: #61656e;
    --line: #dfe2e8;
    --accent: #2f5bd7;
    --danger: #b3261e;
    --radius: 10px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #14161a;
        --surface: #1c1f25;
        --ink: #e9eaee;
        --muted: #9aa0ab;
        --line: #2c3038;
        --accent: #7f9cf5;
        --danger: #f2857c;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--ink);
    font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.shell {
    flex: 1;
    width: 100%;
    max-width: 33rem;
    margin: 0 auto;
    padding: 3rem 1.25rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.75rem;
}

h1 { margin: 0 0 .35rem; font-size: 1.4rem; letter-spacing: -0.01em; }

.error-code { font-size: 2.5rem; margin-bottom: .25rem; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

.muted { color: var(--muted); }
.small { font-size: .875rem; }

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: .875em;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: .1em .4em;
}

.facts {
    margin: 1.25rem 0;
    padding: 0;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: .4rem 1rem;
    align-items: baseline;
}

.facts dt { color: var(--muted); font-size: .875rem; }
.facts dd { margin: 0; }

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

.stack { display: grid; gap: 1.1rem; margin-top: 1.5rem; }

.field { display: grid; gap: .35rem; }

.field label,
.field .label { font-size: .875rem; font-weight: 600; }

.field input,
.field textarea,
.field select {
    width: 100%;
    padding: .6rem .7rem;
    font: inherit;
    color: var(--ink);
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 6px;
}

.field textarea {
    /* Redirect URIs go one per line, so wrapping must not look like a line break. */
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: .875rem;
    resize: vertical;
    white-space: pre;
    overflow-wrap: normal;
    overflow-x: auto;
}

.field input:focus-visible,
.field textarea:focus-visible,
.field select:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
    border-color: var(--accent);
}

/* Checkbox groups: scopes, grant types, and the standalone toggles. */
.checks { margin: 0; padding: 0; list-style: none; display: grid; gap: .5rem; }

.checks > li { display: grid; gap: .2rem; }

.checks label {
    display: flex;
    align-items: baseline;
    gap: .5rem;
    font-weight: 400;
}

.checks input[type="checkbox"] {
    width: auto;
    flex: none;
    margin: 0;
    padding: 0;
}

.checks .hint { margin-left: 1.5rem; }

.hint { margin: 0; font-size: .8125rem; color: var(--muted); }

.button {
    padding: .65rem 1.1rem;
    font: inherit;
    font-weight: 600;
    color: #fff;
    background: var(--accent);
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
}

.button:hover { filter: brightness(1.08); }

.button:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

.button-quiet {
    margin-top: 1rem;
    color: var(--ink);
    background: transparent;
    border-color: var(--line);
}

.scopes {
    margin: 1.25rem 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: .6rem;
}

.scopes li {
    padding: .7rem .85rem;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
}

.scope-name { flex: none; color: var(--muted); }

.actions { display: flex; gap: .6rem; margin-top: 1.5rem; }

.actions .button-quiet { margin-top: 0; }

.alert {
    margin: 1.25rem 0 0;
    padding: .8rem 1rem;
    border: 1px solid var(--danger);
    border-left-width: 3px;
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--danger);
    font-size: .9375rem;
}

.notice {
    margin: 1.25rem 0 0;
    padding: .8rem 1rem;
    border: 1px solid var(--line);
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    background: var(--bg);
    font-size: .9375rem;
}

.footer {
    padding: 1.25rem;
    text-align: center;
    color: var(--muted);
    font-size: .8125rem;
}

/* ---------------------------------------------------------------- admin */

body.admin .shell,
.shell.wide { max-width: 52rem; }

.adminnav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: .75rem;
    border-bottom: 1px solid var(--line);
    font-size: .9375rem;
}

.shell > .card + .card { margin-top: 1.25rem; }

h2 { margin: 0 0 .5rem; font-size: 1.05rem; }
.card h2:not(:first-child) { margin-top: 1.75rem; }

.rows { margin: 1rem 0; padding: 0; list-style: none; display: grid; gap: .5rem; }

.rows > li {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    align-items: center;
    justify-content: space-between;
    padding: .65rem .8rem;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 6px;
}

.rows-block > li { display: block; }
.rows-quiet > li { background: transparent; border-style: dashed; }

.tags { display: flex; flex-wrap: wrap; gap: .35rem; margin: .4rem 0; }

.tag {
    padding: .1rem .45rem;
    font-size: .75rem;
    color: var(--muted);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 999px;
}

.tag-warn { color: var(--danger); border-color: var(--danger); }

.button-small { padding: .3rem .6rem; font-size: .8125rem; }

.button-danger { background: var(--danger); }

.inline-form { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }

.inline-form select {
    flex: 1 1 14rem;
    padding: .5rem;
    font: inherit;
    color: var(--ink);
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 6px;
}

.check { display: flex; gap: .5rem; align-items: center; font-size: .9375rem; }

.facts-tight { margin: .5rem 0 0; font-size: .875rem; }

.wrap { word-break: break-all; }

.secret { border-color: var(--accent); border-left-width: 3px; }

.secret-value {
    margin: .75rem 0;
    font-size: 1.35rem;
    letter-spacing: .04em;
}

.secret-value code { padding: .35rem .6rem; user-select: all; }

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.divider {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin: 1.5rem 0 1rem;
    color: var(--muted);
    font-size: .8125rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--line);
}