@font-face {
  font-family: "Vazirmatn";
  src: url("fonts/Vazirmatn-Variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: light;
  font-family: Tahoma, "Noto Sans Arabic", "Noto Sans", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.6;
  color: #111;
  background: #fff;
  --ink: #111;
  --muted: #444;
  --line: #777;
}

html[lang="fa"], [lang="fa"] { font-family: "Vazirmatn", Tahoma, sans-serif; }

* { box-sizing: border-box; }
html { scrollbar-gutter: stable both-edges; }
[hidden] { display: none !important; }
/* Prevent double-tap zoom while preserving scrolling and pinch-to-zoom. */
body { margin: 0; touch-action: manipulation; }
button, input { font: inherit; color: inherit; }
button, a, summary, input { -webkit-tap-highlight-color: #ddd; }
button {
  min-block-size: 50px;
  border: 2px solid var(--ink);
  border-radius: 0;
  padding: .5rem 1rem;
  background: #fff;
  font-weight: bold;
  line-height: 1.4;
  cursor: pointer;
}
button:disabled { border-color: #aaa; color: #666; background: #f4f4f4; cursor: default; }
a { color: var(--ink); text-underline-offset: .2em; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 4px;
}
input {
  min-inline-size: 0;
  inline-size: 100%;
  min-block-size: 56px;
  border: 2px solid var(--ink);
  border-radius: 0;
  padding: .6rem .8rem;
  background: #fff;
}
input::placeholder { color: #666; opacity: 1; }
#query { text-align: start; }
html[dir="rtl"] #query:placeholder-shown { direction: rtl; text-align: right; }
html[dir="ltr"] #query:placeholder-shown { direction: ltr; text-align: left; }
input[aria-invalid="true"] { border-style: dashed; outline: 2px solid var(--ink); outline-offset: 2px; }
h1, h2, h3, p { margin-block-start: 0; }
h1 { font-size: 1.9rem; line-height: 1.35; margin-block-end: .35rem; }
h2 { font-size: 1.2rem; line-height: 1.6; }
h3 { font-size: 1.1rem; line-height: 1.65; }
bdi { overflow-wrap: anywhere; }
.app-shell { max-inline-size: 68rem; margin-inline: auto; padding: 1rem 1.1rem; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline; column-gap: .35rem; margin-block-start: 2rem; padding-block: 1rem; border-block-start: 1px solid var(--line); color: var(--muted); font-size: .85rem; text-align: center; }
.site-footer a { display: inline-block; padding-block: .5rem; }
.masthead { display: grid; justify-items: center; gap: 1rem; padding-block: 1rem 1.8rem; text-align: center; }
.site-title { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2rem, 6vw, 2.8rem); line-height: 1.2; letter-spacing: .025em; }
.language-switch { font-family: Tahoma, Arial, sans-serif; display: inline-flex; flex-shrink: 0; gap: 0; }
.language-switch button { font-size: .9rem; padding-inline: .65rem; border-radius: 0; }
.language-switch button + button { margin-inline-start: -2px; }
.language-switch button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.search-panel { padding-block: .7rem; }
.search-controls { display: flex; gap: 0; border: 2px solid var(--ink); }
.search-controls input { flex: 1; border: 0; min-block-size: 60px; }
#query:focus { outline: none; box-shadow: none; }
#query[aria-invalid="true"] { box-shadow: inset 0 0 0 2px var(--ink); }
.search-controls .primary-button { border: 0; }
.primary-button { background: var(--ink); color: #fff; min-inline-size: 6rem; }
.hint { color: var(--muted); font-size: .9rem; margin-block: .6rem 0; }
.field-error { font-weight: bold; margin-block: .7rem 0; }
.status:empty { display: none; }
.status { padding-block: 1rem; font-weight: bold; }
.visually-hidden {
  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;
}
.error-box { border: 2px solid var(--ink); border-inline-start-width: 7px; padding: 1rem; margin-block: 1.25rem; background: #ddd; }
.error-box p { margin-block-end: .6rem; }
.empty-state { text-align: center; padding: 2.4rem .6rem; }
.empty-state h2, .empty-state h3 { margin-block-end: .5rem; }
.empty-state p { color: var(--muted); margin-block-end: 0; }
.results-header { padding-block: .6rem .5rem; }
.results-header h2 { margin-block-end: 0; font-size: 1.05rem; }
.results-header .hint { margin-block-start: .15rem; }
.result-list { list-style: none; margin: 0; padding: 0; }
.result-list > li + li { border-block-start: 1px solid var(--line); }
.book { padding-block: .65rem; cursor: pointer; }
.book:has(.book-download-trigger:focus-visible) { outline: 2px solid var(--ink); outline-offset: 2px; }
.book-main { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: .65rem; align-items: center; }
.cover { position: relative; inline-size: 76px; block-size: 108px; background: #f4f4f4; box-shadow: 3px 4px 0 #777; display: grid; align-items: center; justify-items: center; }
.cover-link { display: block; inline-size: 76px; block-size: 108px; min-block-size: 0; padding: 0; border: 0; border-radius: 0; background: none; cursor: zoom-in; }
.cover img { display: block; inline-size: 100%; block-size: 108px; object-fit: contain; background: #fff; }
.cover-viewer-open { overflow: hidden; }
.cover-viewer { position: fixed; inset: 0; inline-size: 100%; block-size: 100%; max-inline-size: none; max-block-size: none; margin: 0; padding: 3rem 1rem 1rem; border: 0; background: transparent; cursor: zoom-out; }
.cover-viewer[open] { display: grid; place-items: center; }
.cover-viewer::backdrop { background: rgb(0 0 0 / 82%); }
.cover-viewer-panel { display: grid; place-items: center; max-inline-size: 100%; padding: .5rem; background: #fff; box-shadow: 0 4px 24px #0006; }
.cover-viewer-panel img { display: block; inline-size: auto; block-size: auto; max-inline-size: 100%; max-block-size: calc(100vh - 5rem); max-block-size: calc(100dvh - 5rem); object-fit: contain; }
.cover-viewer-panel p { margin: 0; padding: 1rem; text-align: center; }
.cover-viewer-close { position: absolute; top: .5rem; right: .5rem; min-inline-size: 44px; min-block-size: 44px; padding: 0; border: 2px solid var(--ink); border-radius: 0; background: #fff; color: #111; font-size: 1.5rem; cursor: pointer; }
.cover-placeholder { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; gap: 8px; padding: 5px; border: 2px solid var(--ink); background: #fff; pointer-events: none; }
.cover.is-loading img { opacity: 0; }
.cover.is-loading .cover-link { pointer-events: none; }
.cover-skeleton-art { block-size: 37px; border: 2px solid var(--ink); background: #ccc; }
.cover-skeleton-line { block-size: 5px; background: #555; }
.cover-skeleton-line.short { inline-size: 65%; }
.cover.is-unavailable .cover-skeleton-art, .cover.is-unavailable .cover-skeleton-line { display: none; }
.cover.is-unavailable .cover-placeholder { border-style: dashed; }
.book-heading { display: flex; align-items: flex-start; gap: .25rem; }
.book-title { flex: 1; min-inline-size: 0; margin-block-end: .15rem; font-size: 1rem; line-height: 1.4; font-weight: bold; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; }
.book-authors { margin-block-end: 0; font-size: .9rem; line-height: 1.4; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.metadata { display: flex; flex-wrap: wrap; gap: .3rem .85rem; margin: 0; font-size: .9rem; font-weight: 400; }
.metadata div { display: inline-flex; gap: .3rem; min-inline-size: 0; }
.metadata dt { color: var(--ink); font-weight: 700; }
.metadata dt::after { content: ":"; }
.metadata dd { margin: 0; color: var(--ink); font-weight: 400; overflow-wrap: anywhere; }
.book-footer { margin-block-start: .25rem; }
.book-meta { min-inline-size: 0; gap: .15rem .65rem; font-size: .9rem; font-weight: 400; line-height: 1.45; }
.source-link { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 40px; block-size: 40px; margin-block-start: -.2rem; border: 1px solid var(--ink); background: #fff; font-size: 1rem; text-decoration: none; border-radius: 0; }
.source-link:hover { background: #eee; }
.details-panel { grid-column: 1 / -1; min-inline-size: 0; padding: .65rem; border: 2px solid var(--ink); border-radius: 0; background: #ddd; overflow-anchor: none; cursor: auto; }
.download-title { margin: 0 0 .25rem; font-size: .8rem; color: var(--muted); }
.mirror-list { list-style: none; padding: 0; margin: 0; display: grid; }
.mirror-list li { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; column-gap: .65rem; min-inline-size: 0; min-block-size: 48px; padding-inline: .1rem; }
.mirror-list li + li { border-block-start: 1px dashed var(--muted); }
.mirror-source { grid-column: 1; grid-row: 1; display: inline-flex; align-items: center; min-block-size: 44px; min-inline-size: 0; font-size: .85rem; text-decoration: none; }
.mirror-source bdi, .resolved-link bdi { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mirror-source:hover { text-decoration: underline; }
.mirror-status { grid-column: 2; grid-row: 1; min-inline-size: 0; display: block; margin: 0; font-size: .75rem; color: var(--muted); text-align: end; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.resolved-links { grid-column: 2; grid-row: 1; min-inline-size: 0; display: flex; justify-content: flex-end; gap: .25rem; }
.resolved-link { display: inline-flex; align-items: center; min-inline-size: 0; min-block-size: 44px; font-size: .8rem; text-decoration: underline; }
.resolved-link:hover { text-decoration-thickness: 2px; }
.resolve-mirrors { display: block; min-block-size: 44px; margin-block-start: .55rem; margin-inline-start: auto; padding: .3rem .6rem; border-width: 1px; font-size: .75rem; font-weight: 400; background: transparent; }
.pagination { padding-block: 1.25rem 1.5rem; }
.pagination-top { padding-block: .65rem; }
.result-filters { display: flex; gap: .65rem; justify-content: center; margin-block-start: 0; padding: .55rem; border: 2px solid var(--ink); border-block-start: 0; background: #ddd; }
.filter-dropdown { position: relative; flex: 1 1 0; min-inline-size: 0; max-inline-size: 100%; font-size: 1rem; }
.filter-dropdown summary { display: flex; align-items: center; justify-content: space-between; gap: .65rem; min-block-size: 56px; padding: .65rem 1rem; border: 2px solid var(--ink); background: #fff; cursor: pointer; overflow-wrap: anywhere; list-style: none; -webkit-user-select: none; user-select: none; }
.filter-dropdown summary::-webkit-details-marker { display: none; }
.filter-dropdown summary::after { content: "▾"; flex-shrink: 0; }
.filter-dropdown summary > span { min-inline-size: 0; }
.filter-dropdown summary [data-i18n="language"], .filter-dropdown summary [data-i18n="extension"] { font-size: .9rem; font-weight: bold; }
.filter-dropdown[open] summary { background: var(--ink); color: #fff; }
.filter-dropdown[open] summary::after { content: "▴"; }
.filter-dropdown fieldset { position: absolute; z-index: 2; inset-inline-start: 0; inline-size: 100%; min-inline-size: 0; max-inline-size: 100%; max-block-size: 16rem; overflow: auto; margin: 0; padding: .4rem; border: 2px solid var(--ink); border-block-start: 0; background: #fff; }
.filter-option bdi { min-inline-size: 0; overflow-wrap: anywhere; }
.filter-option { display: flex; align-items: center; gap: .65rem; min-block-size: 52px; padding-inline: .5rem; cursor: pointer; }
.filter-option input { inline-size: 1.4rem; block-size: 1.4rem; min-block-size: 0; flex: 0 0 auto; margin: 0; padding: 0; accent-color: var(--ink); }
.back-to-top { position: fixed; inset-block-end: 1rem; inset-inline-end: 1rem; z-index: 3; inline-size: 44px; min-block-size: 44px; padding: 0; border-width: 1px; border-radius: 0; box-shadow: none; }
.app-shell { padding-block-end: 4rem; }
.page-controls { display: flex; align-items: center; justify-content: space-between; gap: .6rem; }
.page-controls button { font-size: .95rem; }
button:not(:disabled):hover { background: #ddd; }
.primary-button:not(:disabled):hover, .language-switch button[aria-pressed="true"]:hover { background: #333; color: #fff; }
.page-label { text-align: center; font-size: .9rem; white-space: nowrap; }
.skip-link { position: absolute; inset-block-start: -150px; inset-inline-start: 1rem; background: #fff; border: 2px solid #111; padding: .7rem; z-index: 1; }
.skip-link:focus { inset-block-start: .5rem; }

@media (max-width: 520px) {
  .app-shell { padding-block-start: 1rem; padding-inline: .8rem; }
  .search-controls { flex-wrap: wrap; }
  .search-controls input { flex-basis: 100%; }
  .search-controls button { inline-size: 100%; }
  .filter-dropdown summary { padding-inline: .55rem; gap: .35rem; }
  .result-filters { gap: .45rem; }
  .page-controls { flex-wrap: wrap; }
  .page-label { order: -1; flex-basis: 100%; margin-block-end: .2rem; }
  .page-controls button { flex: 1; padding-inline: .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}