:root {
    color-scheme: light;
    --brand: #183672;
    --brand-strong: #10244c;
    --link: #183672;
    --link-hover: #10244c;
    --brand-hover: #10244c;
    --brand-soft: #eef2f9;
    --page: #f4f6f8;
    --surface: #ffffff;
    --surface-muted: #eef1f4;
    --text: #141a22;
    --muted: #3a4755;
    --border: #5c6d7e;
    --border-soft: #cdd4dc;
    --error: #a32223;
    --error-surface: #fdeaea;
    --focus: #8e6015;
    --success: #0a6341;
    --success-surface: #e6f6f0;
}

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

html {
    background: var(--page);
    color: var(--text);
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 100%;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
}

body {
    min-block-size: 100vh;
    margin: 0;
    background: var(--page);
    color: var(--text);
}

.site-header {
    display: flex;
    align-items: center;
    width: min(100% - 2rem, 72rem);
    min-block-size: 4.75rem;
    margin-inline: auto;
    padding-block: 1rem;
}

.brand {
    display: inline-block;
    color: #0f766e;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 800;
    letter-spacing: .01em;
    text-decoration: none;
}

.brand:hover { color: var(--link-hover); }

.skip-link {
    position: absolute;
    inset-block-start: -5rem;
    inset-inline-start: 1rem;
    z-index: 10;
    padding: .75rem 1rem;
    border: 2px solid var(--brand-strong);
    border-radius: .4rem;
    background: var(--surface);
    color: var(--brand-strong);
    font-weight: 700;
}

.skip-link:focus { inset-block-start: 1rem; }

main {
    width: min(100% - 2rem, 72rem);
    min-block-size: 24rem;
    margin: 1rem auto 3rem;
    padding: clamp(1.25rem, 4vw, 2.75rem);
    border: 1px solid var(--border-soft);
    border-radius: 1rem;
    background: var(--surface);
    box-shadow: 0 .75rem 2rem rgb(20 26 34 / 8%);
}

main:focus { outline: none; }

h1, h2, h3 { color: var(--text); line-height: 1.2; }
h1 { max-inline-size: 24ch; margin: 0 0 1.5rem; font-size: clamp(1.8rem, 5vw, 2.5rem); letter-spacing: -.02em; }
h2 { margin: 0 0 1rem; font-size: clamp(1.25rem, 3vw, 1.6rem); }
h3 { margin: 0 0 .35rem; font-size: 1.05rem; }
p { max-inline-size: 72ch; }

form {
    display: grid;
    gap: 1rem;
    max-inline-size: 38rem;
    margin-block: 1.5rem;
}

label {
    display: grid;
    gap: .4rem;
    color: var(--text);
    font-weight: 700;
}

input {
    inline-size: 100%;
    min-block-size: 3rem;
    padding: .7rem .8rem;
    border: 2px solid var(--border);
    border-radius: .45rem;
    background: var(--surface);
    color: var(--text);
    font: inherit;
}

input::placeholder { color: var(--muted); opacity: 1; }

button, .button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    inline-size: fit-content;
    min-block-size: 3rem;
    padding: .7rem 1.15rem;
    border: 2px solid var(--brand);
    border-radius: .45rem;
    background: var(--brand);
    color: #ffffff;
    font: inherit;
    font-weight: 750;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
}

button:hover, .button-link:hover { background: var(--brand-hover); border-color: var(--brand-hover); color: #ffffff; }
button.secondary { background: var(--surface); color: var(--link); }
button.secondary:hover { background: var(--brand-soft); color: var(--brand-strong); }
button.danger { border-color: var(--error); background: var(--error); }
button.danger:hover { border-color: #7f1d1d; background: #7f1d1d; }
button:disabled { cursor: not-allowed; opacity: .55; }

a {
    color: var(--link);
    text-decoration-thickness: .1em;
    text-underline-offset: .18em;
}

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

:is(a, button, input, select, textarea, summary):focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

p[role="alert"] {
    max-inline-size: 38rem;
    margin-block: 1rem;
    padding: .85rem 1rem;
    border-inline-start: .35rem solid var(--error);
    background: var(--error-surface);
    color: var(--error);
    font-weight: 700;
}

p[role="status"] {
    max-inline-size: 38rem;
    margin-block: 1rem;
    padding: .85rem 1rem;
    border-inline-start: .35rem solid var(--success);
    background: var(--success-surface);
    color: var(--success);
    font-weight: 650;
}

.muted { color: var(--muted); font-size: .95rem; }
.subject { overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .85rem; }

.admin-nav {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem 1.25rem;
    margin-block-end: 1.5rem;
    padding-block-end: .85rem;
    border-block-end: 1px solid var(--border-soft);
}

.admin-nav a[aria-current="page"] { font-weight: 800; text-decoration-thickness: .18rem; }
.admin-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin-block: 1.5rem 2rem; }
.admin-card, .admin-panel, .admin-access-card { border: 1px solid var(--border-soft); border-radius: .65rem; background: var(--surface); }
.admin-card { display: grid; gap: .25rem; padding: 1rem; }
.admin-card strong { color: var(--brand-strong); font-size: 1.7rem; }
.admin-panel { margin-block: 1.25rem; padding: 1.25rem; }
.admin-panel-heading { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 1rem; }
.admin-list { display: grid; gap: .75rem; padding: 0; list-style: none; }
.admin-list li { padding: .85rem 1rem; border-inline-start: .35rem solid #0f766e; background: var(--surface-muted); }
.admin-search { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: .75rem; margin-block: 1rem 1.5rem; }
.admin-search label { grid-column: 1 / -1; }
.admin-search button { grid-column: 2; grid-row: 2; }
.table-wrap { overflow-x: auto; }
.admin-table { inline-size: 100%; min-inline-size: 58rem; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: .8rem; border-block-end: 1px solid var(--border-soft); text-align: start; vertical-align: top; }
.admin-table th { background: var(--surface-muted); font-size: .92rem; }
.status-badge { display: inline-block; padding: .18rem .55rem; border: 1px solid var(--border); border-radius: 999px; background: var(--surface-muted); font-size: .85rem; font-weight: 750; }
.admin-notice { margin-block: 1rem; padding: .85rem 1rem; border-inline-start: .35rem solid var(--success); background: var(--success-surface); color: var(--success); font-weight: 700; }
.admin-details { display: grid; grid-template-columns: minmax(9rem, .35fr) 1fr; gap: .5rem 1rem; margin: 0; }
.admin-details dt { color: var(--muted); font-weight: 750; }
.admin-details dd { margin: 0; overflow-wrap: anywhere; }
.admin-action { display: flex; flex-wrap: wrap; align-items: end; gap: .75rem; }
.admin-action label { min-inline-size: 15rem; flex: 1; }
.admin-action input { min-inline-size: 15rem; }
.admin-access-list { display: grid; gap: 1rem; }
.admin-access-card { display: flex; align-items: end; justify-content: space-between; gap: 1.5rem; padding: 1rem; }
.admin-access-card p { margin-block: .1rem .5rem; }
.admin-access-card form { min-inline-size: min(22rem, 100%); margin: 0; }

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

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
        --brand: #285abe;
        --brand-strong: #537bcb;
        --link: #a9bde5;
        --link-hover: #d4def2;
        --brand-hover: #204898;
        --brand-soft: #1a2a4a;
        --page: #101722;
        --surface: #182331;
        --surface-muted: #232f40;
        --text: #f0f3f6;
        --muted: #d9e1e9;
        --border: #a8b8c9;
        --border-soft: #556b85;
        --error: #f2a5a5;
        --error-surface: #3d1a1a;
        --focus: #f5c67b;
        --success: #83e0b6;
        --success-surface: #1a3d2a;
    }

    button, .button-link { color: #ffffff; }
    button.secondary { color: var(--text); }
}

@media (max-width: 52rem) {
    .admin-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .admin-access-card { display: grid; align-items: stretch; }
    .admin-access-card form { min-inline-size: 0; }
}

@media (max-width: 38rem) {
    .site-header, main { width: min(100% - 1.5rem, 72rem); }
    main { min-block-size: 20rem; margin-block: .5rem 2rem; padding: 1.25rem; border-radius: .65rem; }
    .admin-cards { grid-template-columns: 1fr; }
    .admin-search { grid-template-columns: 1fr; }
    .admin-search button { grid-column: auto; grid-row: auto; }
    .admin-action { display: grid; align-items: stretch; }
    .admin-action label, .admin-action input { min-inline-size: 0; }
    .admin-details { grid-template-columns: 1fr; gap: .25rem; }
    .admin-details dd { margin-block-end: .5rem; }
    form button, form .button-link { inline-size: 100%; }
}

@media (forced-colors: active) {
    main, input, button, .button-link, .admin-panel, .admin-card, .admin-access-card { border: 2px solid CanvasText; box-shadow: none; }
    .brand, a { color: LinkText; }
    button, .button-link { background: ButtonFace; color: ButtonText; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}