/* ==========================================================================
   Design "B — Архивная картотека" (card-catalog look).
   Loaded after style.css and themes.css. Colors come from variables so all
   four themes (sepia, parchment, midnight, ink) work; per-theme overrides
   are at the bottom of this file.
   ========================================================================== */

:root {
  /* category colors: tab + top edge of each index card */
  --cat-diary: #8a3b2b;
  --cat-memoirs: #2f5560;
  --cat-letters: #8c6322;
  --cat-other: #4c5a3e;
  --cat-text: #fdf6ea;

  /* index cards */
  --card-paper: #fffdf5;
  --card-rule: rgba(90, 130, 170, 0.18);
  --card-margin: rgba(196, 70, 60, 0.45);
  --card-edge: #d9ccb1;
  --card-shadow: rgba(50, 35, 20, 0.16);

  /* snapshots */
  --snap-paper: #fffdf7;
  --snap-corner: #2a221a;
  --snap-empty: #efe5d2;
  --snap-photo-bg: #cbbda3;

  /* hero band (when no picture is uploaded) */
  --hero-bg: #4a3b2c;
  --hero-ink: #fbf3e2;
  --hero-kicker: #e3c999;
}

/* ---- Page background: subtle paper grain over the theme color ---- */
body { background-image: url(/images/paper-grain.png); }

/* ---- Header ---- */
.site-header { padding: 0.9rem 0; }
.brand-logo { height: 52px; width: auto; display: block; }
.brand-logo-dark { display: none; }
html[data-theme="midnight"] .brand-logo-light { display: none; }
html[data-theme="midnight"] .brand-logo-dark { display: block; }
.main-nav { gap: 1.35rem; }
.main-nav a { font-size: 1.2rem; }
.main-nav a:hover { color: var(--color-accent); text-decoration: none; }
.nav-search input { font: inherit; padding: 0.45rem 0.7rem; background: var(--color-bg); color: var(--color-ink); }

/* ---- Section headings ---- */
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 1rem; margin: 3rem 0 1.75rem; }
.section-head h1, .section-head h2 { margin: 0; font-size: 2rem; }
.section-more { font-size: 0.95rem; }

/* ---- Hero band (home page) ---- */
.hero-band {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  background-color: var(--hero-bg);
  background-image: url(/images/paper-grain.png);
  overflow: hidden;
}
.hero-band.has-image { background-size: cover; background-position: center; }
.hero-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(36, 26, 16, 0.85) 0%, rgba(36, 26, 16, 0.6) 55%, rgba(36, 26, 16, 0.2) 100%);
}
.hero-band:not(.has-image)::before { background: radial-gradient(ellipse at 80% 30%, rgba(227, 201, 153, 0.18), transparent 60%); }
.hero-inner { position: relative; width: 100%; padding-top: 2.5rem; padding-bottom: 2.5rem; display: flex; flex-direction: column; gap: 1.1rem; }
.hero-kicker { font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--hero-kicker); }
.hero-title { margin: 0; max-width: 680px; font-size: clamp(2rem, 4.5vw, 3rem); line-height: 1.12; color: var(--hero-ink); }
.hero-search { display: flex; max-width: 560px; }
.hero-search input {
  flex: 1; min-width: 0; height: 50px; padding: 0 1.1rem;
  font: inherit; font-size: 1rem; border: none; border-radius: 4px 0 0 4px;
  background: #fbf7ee; color: #2a221a;
}
.hero-search button {
  height: 50px; padding: 0 1.5rem; font: inherit; font-size: 1rem; font-weight: 700;
  color: #2a221a; background: var(--hero-kicker); border: none; border-radius: 0 4px 4px 0; cursor: pointer;
}
.hero-search button:hover { filter: brightness(1.06); }

/* ---- Category filter buttons ---- */
.cat-filter { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.cat-filter a {
  padding: 0.45rem 0.9rem; border-radius: 4px; border: 1px solid var(--color-border);
  color: var(--color-ink); font-size: 0.9rem; text-decoration: none; background: var(--color-card-bg);
}
.cat-filter a:hover { border-color: var(--color-accent); }
.cat-filter a.active { background: var(--color-ink); color: var(--color-bg); border-color: var(--color-ink); }

/* ---- Index cards (diaries) ---- */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 2.5rem 1.75rem;
  margin: 0 0 1rem;
}
.index-card { display: flex; flex-direction: column; color: var(--color-ink); text-decoration: none; }
.index-card:hover { text-decoration: none; }
.index-card-tab {
  align-self: flex-start;
  margin-left: calc(14px + var(--tab-step, 0) * 48px);
  padding: 0.35rem 1rem 0.3rem;
  border-radius: 6px 6px 0 0;
  background: var(--cat-color);
  color: var(--cat-text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.index-card-body {
  min-height: 190px;
  padding: 1.2rem 1.35rem;
  display: flex; flex-direction: column; gap: 0.6rem;
  background-color: var(--card-paper);
  background-image:
    linear-gradient(to bottom, transparent 58px, var(--card-margin) 58px, var(--card-margin) 59px, transparent 59px),
    repeating-linear-gradient(to bottom, transparent 0, transparent 27px, var(--card-rule) 27px, var(--card-rule) 28px);
  border: 1px solid var(--card-edge);
  border-top: 4px solid var(--cat-color);
  box-shadow: 0 4px 10px var(--card-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.index-card:hover .index-card-body, .index-card:focus-visible .index-card-body { transform: translateY(-5px); box-shadow: 0 14px 24px var(--card-shadow); }
.index-card-meta { display: flex; justify-content: space-between; gap: 0.5rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-muted); }
.index-card-lock { display: inline-flex; align-items: center; gap: 0.25rem; }
.index-card-title { margin: 0.5rem 0 0; font-family: var(--font-serif); font-size: 1.35rem; line-height: 1.25; font-weight: 700; color: var(--color-ink); }
.index-card-author { font-family: var(--font-mono); font-size: 0.85rem; color: var(--color-ink); opacity: 0.85; }

.cat-diary   { --cat-color: var(--cat-diary);   --tab-step: 0; }
.cat-memoirs { --cat-color: var(--cat-memoirs); --tab-step: 1; }
.cat-letters { --cat-color: var(--cat-letters); --tab-step: 2; }
.cat-other   { --cat-color: var(--cat-other);   --tab-step: 3; }

/* ---- Snapshots (authors) ---- */
.snap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 2.25rem 1.75rem;
  margin: 0 0 1rem;
}
.snapshot {
  position: relative;
  display: block;
  padding: 0.75rem 0.75rem 0.9rem;
  background: var(--snap-paper);
  color: var(--color-ink);
  text-decoration: none;
  box-shadow: 0 5px 12px var(--card-shadow);
  transform: rotate(var(--tilt, -1.5deg));
  transition: transform 0.2s ease;
}
.snapshot:hover, .snapshot:focus-visible { transform: rotate(0deg) scale(1.03); text-decoration: none; }
.snap-grid > :nth-child(5n+1) { --tilt: -2deg; }
.snap-grid > :nth-child(5n+2) { --tilt: 1.5deg; }
.snap-grid > :nth-child(5n+3) { --tilt: -1deg; }
.snap-grid > :nth-child(5n+4) { --tilt: 2deg; }
.snap-grid > :nth-child(5n+5) { --tilt: -2.5deg; }
.snapshot::before, .snapshot::after {
  content: ""; position: absolute; top: 4px; width: 0; height: 0; z-index: 1;
  border-top: 18px solid var(--snap-corner);
}
.snapshot::before { left: 4px; border-right: 18px solid transparent; }
.snapshot::after { right: 4px; border-left: 18px solid transparent; }
.snapshot-photo {
  height: 180px; display: flex; align-items: center; justify-content: center;
  background: var(--snap-empty); overflow: hidden;
}
.snapshot-photo img { width: 100%; height: 100%; object-fit: cover; filter: sepia(0.25); }
.snapshot-initials { font-family: var(--font-serif); font-size: 3.2rem; color: var(--cat-diary); }
.snap-grid > :nth-child(4n+2) .snapshot-initials { color: var(--cat-memoirs); }
.snap-grid > :nth-child(4n+3) .snapshot-initials { color: var(--cat-letters); }
.snap-grid > :nth-child(4n+4) .snapshot-initials { color: var(--cat-other); }
.snapshot-name { margin-top: 0.6rem; font-family: var(--font-hand); font-size: 1.55rem; line-height: 1.1; text-align: center; }
.snapshot-meta { margin-top: 0.25rem; font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-muted); text-align: center; }

/* ---- Author page: larger snapshot next to the bio ---- */
.author-snapshot { float: right; width: 220px; margin: 0 0 1.5rem 2rem; }
.author-snapshot .snapshot-photo { height: 240px; }
@media (max-width: 640px) { .author-snapshot { float: none; margin: 0 auto 1.5rem; } }

/* ---- Admin: site picture ---- */
.hero-preview { max-width: 100%; border-radius: 6px; border: 1px solid var(--color-border); }

/* ==========================================================================
   Theme overrides
   ========================================================================== */
html[data-theme="parchment"] {
  --card-paper: #fffaf0;
  --snap-paper: #fffaf0;
}

html[data-theme="midnight"] {
  --cat-diary: #a5513f;
  --cat-memoirs: #3f7482;
  --cat-letters: #a87a33;
  --cat-other: #66774f;
  --card-paper: #2a2723;
  --card-rule: rgba(150, 180, 210, 0.10);
  --card-margin: rgba(220, 110, 100, 0.35);
  --card-edge: #3a382f;
  --card-shadow: rgba(0, 0, 0, 0.45);
  --snap-paper: #2e2b26;
  --snap-corner: #0f0e0c;
  --snap-empty: #3a352d;
  --hero-bg: #2a2219;
}
html[data-theme="midnight"] .snapshot-initials { filter: brightness(1.4); }
html[data-theme="midnight"] .hero-search input { background: #f0e9dc; }

html[data-theme="ink"] {
  --card-paper: #ffffff;
  --card-rule: rgba(0, 0, 0, 0.06);
  --card-margin: rgba(0, 0, 0, 0.25);
  --card-edge: #cccccc;
  --snap-paper: #ffffff;
  --snap-corner: #111111;
  --snap-empty: #f0f0f0;
  --hero-bg: #222222;
}
html[data-theme="ink"] body { background-image: none; }
html[data-theme="ink"] .index-card, html[data-theme="ink"] .snapshot { text-decoration: none; }
html[data-theme="ink"] .snapshot { transform: none; }

.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---- Small screens: let the header wrap instead of running off the edge ---- */
@media (max-width: 700px) {
  .header-row { gap: 0.8rem 1rem; }
  .main-nav { flex-wrap: wrap; flex-basis: 100%; gap: 0.4rem 1.1rem; }
  .nav-search { flex: 1 1 100%; }
  .nav-search input { width: 100%; }
  .nav-admin { flex-wrap: wrap; }
  .section-head h1, .section-head h2 { font-size: 1.6rem; }
}

/* ---- Photos page: back button + zoomed photo viewer ---- */
.photos-head { margin-top: 1.5rem; }
.back-button { white-space: nowrap; text-decoration: none; }
.back-button:hover { text-decoration: none; }
.photos-foot { margin: 2rem 0 0; }
.photo-zoom { display: block; cursor: zoom-in; }

.lightbox {
  width: 100vw; height: 100vh; max-width: 100vw; max-height: 100vh;
  margin: 0; padding: 0; border: none;
  background: rgba(20, 15, 10, 0.92); color: #f0e6d2;
}
.lightbox::backdrop { background: rgba(20, 15, 10, 0.6); }
.lightbox[open] { display: flex; align-items: center; justify-content: center; }
.lb-figure {
  flex: 1; height: 100%; margin: 0; padding: 3.5rem 0 1rem;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.8rem;
  min-width: 0;
}
.lb-img {
  max-width: 100%; max-height: calc(100vh - 8rem); object-fit: contain;
  background: #fbf7ee; padding: 8px; box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}
.lb-caption { display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; justify-content: center; align-items: baseline; text-align: center; padding: 0 1rem; }
.lb-text { font-size: 1rem; }
.lb-diary { color: #e3c999; }
.lb-counter { font-family: var(--font-mono); font-size: 0.8rem; opacity: 0.7; }
.lb-close, .lb-nav {
  background: none; border: none; color: #f0e6d2; cursor: pointer; line-height: 1;
  opacity: 0.8; transition: opacity 0.15s;
}
.lb-close:hover, .lb-nav:hover { opacity: 1; }
.lb-close { position: absolute; top: 0.6rem; right: 1rem; font-size: 2.6rem; padding: 0.2rem 0.6rem; }
.lb-nav { font-size: 4rem; padding: 1rem 1.2rem; align-self: stretch; }
.lb-nav[hidden] { visibility: hidden; display: block; }
@media (max-width: 640px) {
  .lb-nav { font-size: 2.6rem; padding: 0.5rem; }
  .lb-img { max-height: calc(100vh - 9rem); padding: 4px; }
}
.lb-close:focus:not(:focus-visible), .lb-nav:focus:not(:focus-visible) { outline: none; }
.lb-close:focus-visible, .lb-nav:focus-visible { outline: 2px solid rgba(240, 230, 210, 0.5); outline-offset: 2px; }

/* ---- Progress: background scan box (document page) + import overlay ---- */
.progress-track { position: relative; height: 8px; border-radius: 4px; background: var(--color-border); overflow: hidden; }
.progress-fill { height: 100%; width: 0; border-radius: 4px; background: var(--color-accent); transition: width 0.4s ease; }
.progress-track.indeterminate .progress-fill {
  width: 35%; position: absolute; left: -35%;
  animation: progress-slide 1.4s ease-in-out infinite;
}
@keyframes progress-slide { 0% { left: -35%; } 100% { left: 100%; } }

.scan-progress {
  margin-top: 1.5rem; padding: 1rem 1.2rem; display: flex; flex-direction: column; gap: 0.6rem;
  background: var(--card-paper); border: 1px solid var(--card-edge); border-left: 4px solid var(--color-accent); border-radius: 4px;
}
.scan-progress-head { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 0.8rem; }
.scan-count { margin-left: auto; font-family: var(--font-mono); font-size: 0.85rem; color: var(--color-muted); }
.scan-note, .scan-message { margin: 0; font-size: 0.9rem; }
.scan-spinner {
  width: 16px; height: 16px; border-radius: 50%; display: none;
  border: 2px solid var(--color-border); border-top-color: var(--color-accent);
  animation: spin 0.9s linear infinite;
}
.scan-progress.is-running .scan-spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

.busy-overlay {
  position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 16px;
  background: rgba(36, 26, 16, 0.55);
}
.busy-overlay[hidden] { display: none; }
.busy-card {
  width: min(460px, 100%); padding: 1.8rem 1.8rem 1.4rem; text-align: center;
  background: var(--card-paper); color: var(--color-ink);
  border-top: 4px solid var(--color-accent); border-radius: 4px; box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}
.busy-stage { margin: 0.9rem 0 0.8rem; font-family: var(--font-serif); font-size: 1.15rem; }
.busy-elapsed { margin: 0.7rem 0 0; font-family: var(--font-mono); font-size: 0.85rem; }
.busy-note { margin: 0.4rem 0 0; font-size: 0.85rem; }
/* three ink dots "being written" */
.busy-quill { display: inline-flex; gap: 8px; }
.busy-quill span { width: 10px; height: 10px; border-radius: 50%; background: var(--color-accent); animation: ink 1.2s ease-in-out infinite; }
.busy-quill span:nth-child(2) { animation-delay: 0.2s; }
.busy-quill span:nth-child(3) { animation-delay: 0.4s; }
@keyframes ink { 0%, 80%, 100% { opacity: 0.2; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-5px); } }
@media (prefers-reduced-motion: reduce) {
  .busy-quill span, .scan-spinner, .progress-track.indeterminate .progress-fill { animation-duration: 3s; }
}

/* ---- Footnotes / endnotes in entries ---- */
.fn-ref { line-height: 0; font-size: 0.72em; vertical-align: super; }
.fn-ref a {
  display: inline-block; padding: 0.08em 0.08em; margin: 0 -0.02em 0 0.02em; line-height: 1.1;
  font-family: var(--font-mono); font-weight: 700; text-align: center; text-decoration: none;
  color: var(--color-accent); border-radius: 3px;
}
.fn-ref a:hover, .fn-ref a[aria-expanded="true"] { background: var(--color-accent); color: var(--color-bg); }
.footnotes { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--color-border); font-size: 0.92rem; }
.footnotes h2 { font-size: 1.05rem; margin: 0 0 0.75rem; font-family: var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-muted); }
.footnotes ol { margin: 0; padding-left: 1.8rem; }
.footnotes li { margin: 0 0 0.5rem; padding-left: 0.2rem; }
.footnotes li::marker { font-family: var(--font-mono); color: var(--color-accent); font-weight: 700; }
.footnotes li:target { background: rgba(227, 201, 153, 0.35); border-radius: 3px; }
.footnote-back { margin-left: 0.35rem; text-decoration: none; }
.fn-pop {
  position: absolute; z-index: 900; padding: 0.75rem 0.95rem; font-size: 0.92rem; line-height: 1.45;
  background: var(--card-paper); color: var(--color-ink);
  border: 1px solid var(--card-edge); border-top: 3px solid var(--color-accent); border-radius: 4px;
  box-shadow: 0 10px 28px var(--card-shadow);
}
.fn-pop[hidden] { display: none; }
.fn-pop-num { font-family: var(--font-mono); font-weight: 700; color: var(--color-accent); }
.footnote-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; margin-top: -0.4rem; }
.footnote-tools .button { margin: 0; }
.footnote-tools small { flex: 1 1 260px; }