* { box-sizing: border-box; }
[hidden], .validation-summary-valid { display: none !important; }
html { scroll-padding-block: 1rem; }
body { position: relative; isolation: isolate; margin: 0; background: var(--background); color: var(--text); font-family: system-ui, sans-serif; line-height: 1.6; overflow-wrap: anywhere; }
body::before { content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; background-image: linear-gradient(120deg, rgba(7, 19, 25, .64), rgba(7, 19, 25, .78)), url("/images/backgrounds/biblioteca-gotica.webp"); background-position: center; background-size: cover; background-repeat: no-repeat; opacity: .6; }
body.account-page main, body.home-page main { background: rgba(7, 19, 25, .7); border: 1px solid rgba(102, 136, 140, .32); border-radius: var(--radius); }
body.library-page main, body.search-page main { background: rgba(16, 36, 44, .88); border: 1px solid rgba(102, 136, 140, .26); border-radius: var(--radius); }
body.library-page::before, body.search-page::before { opacity: .22; }
body.reader-page::before { background-image: linear-gradient(120deg, rgba(7, 19, 25, .82), rgba(7, 19, 25, .9)), url("/images/backgrounds/biblioteca-gotica.webp"); opacity: .12; }
body.reader-page main { background: rgba(7, 19, 25, .62); border: 1px solid rgba(102, 136, 140, .2); border-radius: var(--radius); }
body.admin-page::before { background-image: none; opacity: 0; }
body.admin-page main { background: var(--background); }
a { color: var(--accent); text-underline-offset: .22em; }
a:hover { text-decoration-thickness: .15em; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
main:focus { outline: none; }
.site-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4); padding: var(--space-4) max(1rem, calc((100vw - 1200px) / 2)); border-bottom: 1px solid var(--border-subtle); background: linear-gradient(115deg, var(--surface), var(--background)); }
.site-header nav, .admin-nav { display: flex; align-items: center; gap: var(--space-1) var(--space-4); flex-wrap: wrap; }
.site-header nav a, .admin-nav a { display: inline-flex; align-items: center; min-height: 44px; padding-block: var(--space-2); }
.site-header .logout-form { max-width: none; margin: 0; }
.site-header .logout-form button { margin: 0; padding-block: var(--space-2); background: transparent; border-color: var(--border-subtle); }
.nav-label { color: var(--muted); font-size: .65rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
.site-header .nav-label { flex-basis: 100%; }
.brand { display: inline-flex; align-items: center; gap: .8rem; font-weight: 700; letter-spacing: .06em; text-decoration: none; color: var(--text); }
.brand-mark { width: 48px; height: 48px; flex-shrink: 0; color: var(--accent); }
.brand small { display: block; color: var(--muted); font-size: .7rem; font-weight: 400; letter-spacing: .15em; text-transform: uppercase; }
.archive-note { color: var(--muted); max-width: 32ch; font-size: .85rem; }
.admin-nav { max-width: 1200px; margin: auto; padding: var(--space-2) var(--space-3); border-bottom: 1px solid var(--border-subtle); background: var(--surface); font-size: .85rem; }
.admin-nav .nav-label { color: var(--warning); padding-right: var(--space-3); border-right: 1px solid var(--border-subtle); }
main { max-width: 1200px; padding: var(--space-6) var(--space-3) 5rem; margin: auto; min-height: 65vh; }
main > :first-child { margin-top: 0; }
h1 { font-family: var(--reading-font); font-weight: 400; line-height: 1.15; font-size: clamp(2rem, 4vw, 3.4rem); margin-block: 0 var(--space-5); }
h2 { font-size: 1.35rem; line-height: 1.35; margin-block: var(--space-5) var(--space-3); }
h3 { line-height: 1.4; }
.eyebrow { color: var(--warning); text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; }
.page-intro { margin-bottom: var(--space-5); padding-bottom: var(--space-4); border-bottom: 1px solid var(--border-subtle); }
.page-intro .eyebrow { margin: 0 0 var(--space-2); }
.page-intro h1 { margin-bottom: 0; }
.page-intro > a { display: inline-block; margin-top: var(--space-3); }
p { max-width: 75ch; }
section + section { margin-top: var(--space-6); }
form { max-width: 75ch; margin-block: var(--space-4); }
label { display: block; margin-block: var(--space-3) var(--space-1); }
input, select, textarea, button { font: inherit; border: 1px solid var(--border); border-radius: .25rem; padding: .6rem .8rem; max-width: 100%; min-height: 44px; }
input, select, textarea { color: var(--text); background: var(--background); }
input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]), select, textarea { display: block; width: 100%; }
input[type="checkbox"], input[type="radio"] { min-height: 24px; width: 24px; vertical-align: middle; accent-color: var(--accent); }
input[type="file"] { padding: .5rem; }
input[type="file"]::file-selector-button { font: inherit; max-width: 100%; }
textarea { min-height: 12rem; resize: vertical; }
button { cursor: pointer; background: var(--surface-raised); color: var(--text); white-space: normal; margin-block: var(--space-3) var(--space-2); }
button:hover { border-color: var(--accent); }
button:disabled { cursor: not-allowed; opacity: .65; }
fieldset { min-width: 0; padding: var(--space-3); border: 1px solid var(--border-subtle); border-radius: var(--radius); margin-block: var(--space-4); }
legend { padding-inline: var(--space-2); font-weight: 600; }
fieldset label { padding: .25rem 0; }
[role="status"], .validation-summary-errors { padding: var(--space-3); border: 1px solid var(--accent); border-radius: var(--radius); background: var(--surface); }
.validation-summary-errors { border-color: var(--danger); color: var(--danger); }
.validation-summary-errors ul { padding-left: 1.5rem; }
code, pre { white-space: pre-wrap; overflow-wrap: anywhere; }
table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: .85rem; }
.table-scroll { overflow-x: auto; }
.table-scroll table { min-width: 60rem; }
th, td { text-align: left; border-bottom: 1px solid var(--border-subtle); padding: .6rem .4rem; vertical-align: top; }
caption { text-align: left; color: var(--muted); padding-block: var(--space-3); }
dt { color: var(--muted); } dd { margin: 0 0 .75rem; }
.account-page main { max-width: 560px; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-3); max-width: 1200px; margin: auto; padding: var(--space-4) var(--space-3); color: var(--muted); border-top: 1px solid var(--border-subtle); font-size: .8rem; }
.skip-link { position: absolute; transform: translateY(-200%); top: 1rem; left: 1rem; background: var(--background); padding: .7rem; z-index: 10; }
.skip-link:focus { transform: translateY(0); }
[contenteditable="true"] { min-height: 16rem; padding: var(--space-3); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
[contenteditable="true"] img, .reader-content img { max-width: 100%; height: auto; }
.editor-toolbar { display: flex; flex-wrap: wrap; gap: .35rem; }
.permission-matrix { max-width: none; }
.permission-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); align-items: start; gap: var(--space-4); }
.permission-layout fieldset { margin: 0; background: var(--surface); }
.permission-layout legend { color: var(--warning); }
.permission-layout fieldset label { display: flex; align-items: start; gap: var(--space-2); margin: 0; padding: .6rem 0; border-bottom: 1px solid var(--border-subtle); }
.permission-layout fieldset label:last-child { border-bottom: 0; }
.permission-layout input[type="checkbox"] { flex-shrink: 0; margin: 0; }
.permission-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); margin-bottom: var(--space-4); }
.permission-options label { margin-top: 0; }
.permission-resources fieldset p { margin-top: 0; color: var(--muted); font-size: .85rem; }
.permission-matrix > button { margin-top: var(--space-4); border-color: var(--warning); }
/* Motion ends in the base appearance; no delays or persistent animation state. */
a { transition: color 160ms ease-out, text-decoration-color 160ms ease-out; }
a:hover { text-decoration-color: var(--text); }
.brand:hover { color: var(--accent); }
button, .permission-layout fieldset { transition: border-color 180ms ease-out, background-color 180ms ease-out; }
.permission-layout fieldset:focus-within { border-color: var(--accent); }
.page-intro, .permission-layout fieldset { animation: archive-entry 200ms ease-out; }
.brand-ring { animation: seal-reveal 360ms ease-out; }
.brand-linework { animation: seal-reveal 420ms ease-out; }
.brand-diamond { color: var(--warning); animation: seal-reveal 480ms ease-out; }
@keyframes archive-entry {
    from { opacity: .75; transform: translateY(3px); }
    to { opacity: 1; transform: none; }
}

.authenticator-setup {
  display: grid;
  gap: var(--space-5);
  align-items: center;
  margin-block: var(--space-5);
}

.authenticator-qr {
  width: min(100%, 18rem);
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.authenticator-qr svg {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 44rem) {
  .authenticator-setup {
    grid-template-columns: minmax(13rem, 18rem) minmax(0, 1fr);
  }
}
@keyframes seal-reveal {
    from { opacity: .25; }
    to { opacity: 1; }
}
@media (max-width: 720px) {
    body::before { background-image: linear-gradient(120deg, rgba(7, 19, 25, .64), rgba(7, 19, 25, .78)), url("/images/backgrounds/biblioteca-gotica-mobile.webp"); }
    body.reader-page::before { background-image: linear-gradient(120deg, rgba(7, 19, 25, .82), rgba(7, 19, 25, .9)), url("/images/backgrounds/biblioteca-gotica-mobile.webp"); }
    main { padding-top: var(--space-5); }
    .site-header { align-items: flex-start; }
    .site-header nav, .admin-nav { column-gap: var(--space-3); width: 100%; font-size: .85rem; }
    .site-header nav .nav-label, .admin-nav .nav-label { flex-basis: 100%; border-right: 0; padding: 0; }
    .site-header nav a, .admin-nav a { padding-block: var(--space-1); }
    .permission-layout, .permission-options { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}