/* ==========================================================================
   MILPUBS, void theme
   Palette: Quad4 brand (Void / Void raised / Mist / Paper / Paper soft)
   Type: Public Sans (body) + IBM Plex Mono (labels, meta, wordmark)
   ========================================================================== */

@font-face {
  font-family: "Public Sans";
  src: url("/static/fonts/public-sans-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/static/fonts/ibm-plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/static/fonts/ibm-plex-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/static/fonts/ibm-plex-mono-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Quad4 palette */
  --void: #0a0a0b;
  --raised: #16161a;
  --overlay: #1d1d23;
  --line: rgba(161, 161, 170, 0.14);
  --line-strong: rgba(161, 161, 170, 0.3);
  --paper: #fafafa;
  --paper-soft: #f4f4f5;
  --mist: #a1a1aa;
  --mist-dim: #82828c;

  /* semantic */
  --bg: var(--void);
  --surface: var(--raised);
  --surface-hover: var(--overlay);
  --border: var(--line);
  --border-strong: var(--line-strong);
  --text: var(--paper);
  --text-2: var(--mist);
  --text-3: var(--mist-dim);
  --action-bg: var(--paper);
  --action-fg: var(--void);
  --action-hover: var(--paper-soft);
  --text-hover: var(--paper-soft);
  --active-bg: var(--overlay);
  --focus: var(--paper);
  --header-bg: rgba(10, 10, 11, 0.82);
  --accent-pdf: #e8a0a0;
  --accent-epub: #a8c8e8;

  color-scheme: dark;

  --font-body: "Public Sans", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius: 8px;
  --radius-sm: 5px;
  --wrap: 1180px;
  --header-h: 58px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Light theme, enabled only by the explicit toggle (dark is the default). */
:root[data-theme="light"] {
  --bg: #fafafa;
  --surface: #ffffff;
  --surface-hover: #f1f1f4;
  --border: rgba(10, 10, 11, 0.1);
  --border-strong: rgba(10, 10, 11, 0.24);
  --text: #0a0a0b;
  --text-2: #52525b;
  --text-3: #71717a;
  --action-bg: #0a0a0b;
  --action-fg: #fafafa;
  --action-hover: #27272a;
  --text-hover: #3f3f46;
  --active-bg: #ececf0;
  --focus: #0a0a0b;
  --header-bg: rgba(250, 250, 250, 0.85);
  --accent-pdf: #b3402f;
  --accent-epub: #2f5fa3;

  color-scheme: light;
}

/* OS light preference applies only when no explicit choice was stored;
   the bootstrap script always sets data-theme for JS users, so this
   fallback covers no-JS visitors. */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #fafafa;
    --surface: #ffffff;
    --surface-hover: #f1f1f4;
    --border: rgba(10, 10, 11, 0.1);
    --border-strong: rgba(10, 10, 11, 0.24);
    --text: #0a0a0b;
    --text-2: #52525b;
    --text-3: #71717a;
    --action-bg: #0a0a0b;
    --action-fg: #fafafa;
    --action-hover: #27272a;
    --text-hover: #3f3f46;
    --active-bg: #ececf0;
    --focus: #0a0a0b;
    --header-bg: rgba(250, 250, 250, 0.85);
    --accent-pdf: #b3402f;
    --accent-epub: #2f5fa3;

    color-scheme: light;
  }
}

/* ---------- reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scrollbar-color: var(--border-strong) transparent; scrollbar-width: thin; }
/* Never allow horizontal page scroll; clip keeps position:sticky working. */
html, body { overflow-x: clip; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 8px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }
::-webkit-scrollbar-corner { background: transparent; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.15; letter-spacing: -0.015em; }
p { margin: 0; }
a { color: var(--text); text-decoration: none; }
a:hover { color: var(--text-hover); }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}
::selection { background: rgba(161, 161, 170, 0.35); color: var(--text); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 20px; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark { width: 20px; height: 20px; }
.brand-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  color: var(--text);
}
.site-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.site-nav a {
  font-size: 0.875rem;
  color: var(--text-2);
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  transition: color 150ms var(--ease), background 150ms var(--ease);
}
.site-nav a:hover { color: var(--text); background: var(--surface); }
.theme-toggle {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  color: var(--text-2);
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 150ms var(--ease), background 150ms var(--ease);
}
.theme-toggle:hover { color: var(--text); background: var(--surface); }
.theme-toggle svg { width: 15px; height: 15px; }
.icon-moon { display: none; }
:root[data-theme="light"] .icon-sun { display: none; }
:root[data-theme="light"] .icon-moon { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .icon-sun { display: none; }
  :root:not([data-theme]) .icon-moon { display: block; }
}

/* ---------- search form ---------- */
.search-form { width: 100%; }
/* One fused control: input and submit share a single bordered box, the
   button sits flush against the right edge as a distinct segment. */
.search-box {
  position: relative;
  display: flex;
  align-items: stretch;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 150ms var(--ease), box-shadow 150ms var(--ease);
}
.search-box:focus-within {
  border-color: var(--mist);
  box-shadow: 0 0 0 3px rgba(161, 161, 170, 0.15);
}
.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  width: 16px;
  height: 16px;
  margin-top: -8px;
  color: var(--text-2);
  pointer-events: none;
}
.search-box input {
  flex: 1;
  min-width: 0;
  height: 52px;
  padding: 0 14px 0 44px;
  font: inherit;
  font-size: 1rem;
  color: var(--text);
  background: transparent;
  border: 0;
  border-radius: 0;
}
.search-box input::placeholder { color: var(--text-3); }
.search-box input:focus { outline: none; }
.search-btn {
  flex-shrink: 0;
  align-self: stretch;
  height: auto;
  margin: 0;
  padding: 0 22px;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--action-fg);
  background: var(--action-bg);
  border: 0;
  border-left: 1px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  transition: background 150ms var(--ease), transform 100ms var(--ease);
}
.search-btn:hover { background: var(--action-hover); }
.search-btn:active { transform: translateY(1px); }
.search-form-big .search-box { border-radius: 12px; }
.search-form-big .search-box input { height: 48px; font-size: 1.05rem; }
.htmx-indicator {
  position: absolute;
  right: 112px;
  top: 50%;
  width: 16px;
  height: 16px;
  margin-top: -8px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--mist);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
}
.htmx-indicator.htmx-request {
  opacity: 1;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- home / hero ---------- */
.home { padding-bottom: 72px; }
.hero { padding-top: 72px; padding-bottom: 48px; }
.hero-title {
  font-size: clamp(2.3rem, 5.4vw, 3.6rem);
  font-weight: 750;
  letter-spacing: -0.03em;
  max-width: 16ch;
}
.hero-sub {
  margin-top: 18px;
  max-width: 58ch;
  font-size: 1.075rem;
  color: var(--text-2);
  text-wrap: pretty;
}
.hero-search { margin-top: 34px; max-width: 680px; }
.hero-stats {
  margin: 44px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.stat dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-2);
}
.stat dd {
  margin: 4px 0 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.browse-section { padding-top: 24px; }
.section-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 18px;
}
.branch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
}
.branch-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 150ms var(--ease), background 150ms var(--ease);
}
.branch-card:hover { border-color: var(--border-strong); background: var(--surface-hover); color: var(--text); }
.branch-name { font-weight: 650; font-size: 1rem; }
.branch-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-2);
}
.browse-all { margin-top: 20px; font-size: 0.9rem; }
.browse-all a { color: var(--text-2); border-bottom: 1px solid var(--border-strong); padding-bottom: 1px; }
.browse-all a:hover { color: var(--text); }

/* ---------- catalog layout ---------- */
.catalog { padding-top: 36px; padding-bottom: 72px; }
.catalog-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}
.catalog-main { min-width: 0; }
.catalog-head { margin-bottom: 20px; }
.page-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}
.page-sub { margin-top: 8px; color: var(--text-2); font-size: 0.95rem; text-wrap: pretty; }
.catalog-search { margin-bottom: 8px; max-width: 560px; }
.catalog-search .search-box input { height: 46px; }
.catalog-search .search-box input { font-size: 0.95rem; }

/* ---------- facets ---------- */
.facets { position: sticky; top: calc(var(--header-h) + 24px); }
.facets-active {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.facets-label {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-2);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--text);
  background: var(--surface);
}
.chip:hover { border-color: var(--mist); }
.chip-active { background: var(--active-bg); }
.chip-clear { color: var(--text-2); border-style: dashed; }
.facet-group { margin-bottom: 26px; }
.facet-list { display: flex; flex-direction: column; }
.facet-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 8px;
  margin-inline: -8px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-2);
  transition: color 120ms var(--ease), background 120ms var(--ease);
}
.facet-link > span:first-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.facet-link:hover { color: var(--text); background: var(--surface); }
.facet-link.active { color: var(--text); background: var(--active-bg); font-weight: 600; }
.facet-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
}
.facet-list-scroll { max-height: 210px; overflow-y: auto; scrollbar-width: thin; }
.facets-mobile { display: none; }

/* ---------- refine / advanced forms ---------- */
.refine-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.refine-field { display: flex; flex-direction: column; gap: 4px; }
.refine-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
}
.refine-input {
  width: 100%;
  height: 34px;
  padding: 0 10px;
  font: inherit;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 150ms var(--ease);
}
.refine-input::placeholder { color: var(--text-3); }
.refine-input:focus { border-color: var(--border-strong); outline: none; }
.refine-years { display: flex; align-items: center; gap: 6px; }
.refine-years .refine-input { flex: 1; min-width: 0; }
.refine-dash { color: var(--text-3); font-family: var(--font-mono); }
.refine-select { appearance: auto; }
.refine-apply {
  height: 34px;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--action-fg);
  background: var(--action-bg);
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 150ms var(--ease);
}
.refine-apply:hover { background: var(--action-hover); }
.refine-reset {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  text-align: center;
}
.refine-reset:hover { color: var(--text); }

.adv-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 28px;
}
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.adv-field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.adv-span2 { grid-column: span 2; }
.adv-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
}
.adv-input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  font: inherit;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 150ms var(--ease);
}
.adv-input::placeholder { color: var(--text-3); }
.adv-input:focus { border-color: var(--border-strong); outline: none; }
select.adv-input { appearance: auto; }
.adv-actions { display: flex; gap: 10px; margin-top: 18px; }
.adv-hint { color: var(--text-3); font-size: 0.9rem; padding: 12px 4px; }
.head-link {
  color: var(--text-2);
  border-bottom: 1px solid var(--border-strong);
  white-space: nowrap;
}
.head-link:hover { color: var(--text); }
@media (max-width: 720px) {
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .adv-span2 { grid-column: 1 / -1; }
}
@media (max-width: 460px) {
  .adv-grid { grid-template-columns: 1fr; }
}

/* ---------- results ---------- */
.results-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 10px 4px 14px;
  border-bottom: 1px solid var(--border);
}
.results-count { font-size: 0.875rem; color: var(--text-2); font-variant-numeric: tabular-nums; }
.results-clear {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  border-bottom: 1px solid transparent;
}
.results-clear:hover { color: var(--text); border-bottom-color: var(--border-strong); }
.did-you-mean { padding: 14px 4px 0; font-size: 0.85rem; color: var(--text-2); }
.did-you-mean a { color: var(--text); border-bottom: 1px solid var(--border-strong); }
.did-you-mean a:hover { color: var(--text-hover); border-bottom-color: var(--mist); }

.pub-list { display: flex; flex-direction: column; }
.pub-row {
  display: flex;
  align-items: stretch;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}
.pub-row:last-child { border-bottom: 0; }
.pub-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 15px 10px;
  border-radius: var(--radius-sm);
  transition: background 120ms var(--ease);
}
.pub-row:hover .pub-main { background: var(--surface); }
.pub-title {
  font-size: 0.98rem;
  font-weight: 550;
  line-height: 1.4;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}
.pub-series {
  font-family: var(--font-mono);
  font-size: 0.8em;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-2);
}
.pub-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.pub-snippet {
  margin: 2px 0 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--text-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}
.pub-snippet mark {
  background: color-mix(in srgb, var(--paper) 16%, transparent);
  color: var(--text);
  padding: 0 1px;
  border-radius: 2px;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 7px;
}
.tag-strong { color: var(--text); border-color: var(--border-strong); }
.pub-formats {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 15px 4px 15px 0;
}
.fmt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 4px 9px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-2);
  text-align: center;
  min-width: 52px;
  transition: border-color 120ms var(--ease), background 120ms var(--ease), color 120ms var(--ease);
}
a.fmt:hover { border-color: var(--border-strong); background: var(--surface); color: var(--text); }
a.fmt svg { width: 11px; height: 11px; flex-shrink: 0; }
.fmt-pdf { color: var(--accent-pdf); border-color: color-mix(in srgb, var(--accent-pdf) 35%, transparent); }
.fmt-epub { color: var(--accent-epub); border-color: color-mix(in srgb, var(--accent-epub) 35%, transparent); }

/* ---------- pagination ---------- */
.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding: 22px 4px 4px;
}
.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: color 120ms var(--ease), border-color 120ms var(--ease), background 120ms var(--ease);
}
a.page-link:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface); }
.page-link.active { color: var(--action-fg); background: var(--action-bg); border-color: var(--action-bg); font-weight: 700; }
.page-link.disabled { opacity: 0.4; }
.page-ellipsis { padding: 0 4px; color: var(--text-3); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 150ms var(--ease), border-color 150ms var(--ease), transform 100ms var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--action-bg); color: var(--action-fg); }
.btn-primary:hover { background: var(--action-hover); color: var(--action-fg); }
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { border-color: var(--mist); background: var(--surface); }

/* ---------- pub detail ---------- */
.pub-page { padding-top: 36px; padding-bottom: 80px; }
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  margin-bottom: 28px;
}
.crumbs a { color: var(--text-2); }
.crumbs a:hover { color: var(--text); }
.crumbs { overflow-wrap: anywhere; }
.pub-head { max-width: 780px; }
.pub-kicker { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.pub-title {
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  letter-spacing: -0.025em;
}
.pub-fulltitle {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-2);
  word-break: break-word;
}
.downloads { margin-top: 44px; max-width: 780px; }
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}
.download-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 150ms var(--ease), background 150ms var(--ease);
}
.download-card:hover { border-color: var(--border-strong); background: var(--surface-hover); color: var(--text); }
.dl-format {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}
.dl-top {
  display: flex;
  align-items: center;
  gap: 8px;
}
.icon-dl { width: 15px; height: 15px; flex-shrink: 0; }
.download-card.fmt-pdf .icon-dl, .download-card.fmt-pdf .dl-format { color: var(--accent-pdf); }
.download-card.fmt-epub .icon-dl, .download-card.fmt-epub .dl-format { color: var(--accent-epub); }
.download-all {
  border-style: dashed;
  justify-content: center;
  text-align: center;
}
.download-all .dl-top { justify-content: center; }
.download-all .dl-format { color: var(--text-2); }
.download-all:hover { border-style: solid; }
.dl-name {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.dl-meta { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-3); }
.pub-meta-info { margin-top: 48px; max-width: 780px; }
.meta-list { border-top: 1px solid var(--border); }
.meta-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.meta-row dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
  padding-top: 2px;
}
.meta-row dd { margin: 0; color: var(--text-2); overflow-wrap: anywhere; }
.meta-row dd code { overflow-wrap: anywhere; }
.meta-row dd a { color: var(--text); border-bottom: 1px solid var(--border-strong); }

/* ---------- API docs ---------- */
.docs { padding-top: 44px; padding-bottom: 80px; max-width: 860px; }
.docs-head { margin-bottom: 40px; }
.docs-section { margin-bottom: 44px; }
.docs-h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-2);
  margin: 22px 0 10px;
}
.docs-note { color: var(--text-2); font-size: 0.92rem; margin-bottom: 14px; text-wrap: pretty; }
.endpoint-list { display: flex; flex-direction: column; gap: 10px; }
.endpoint {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.method {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-strong);
  color: var(--text-2);
}
.method.get { color: var(--accent-epub); border-color: color-mix(in srgb, var(--accent-epub) 40%, transparent); }
.ep-path {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text);
  overflow-wrap: anywhere;
}
.ep-desc { font-size: 0.85rem; color: var(--text-3); margin-left: auto; text-align: right; }
@media (max-width: 640px) {
  .endpoint { flex-wrap: wrap; }
  .ep-desc { margin-left: 0; text-align: left; width: 100%; }
}
.codeblock {
  margin: 0;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-2);
  overflow-x: auto;
  white-space: pre;
}
.codeblock code { background: none; border: 0; padding: 0; font-size: inherit; color: inherit; }
.docs .meta-list { border-top: 1px solid var(--border); }
.docs .meta-row dd { font-size: 0.88rem; text-wrap: pretty; }

/* ---------- feedback: progress bar + toast ---------- */
.page-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 100;
  background: var(--action-bg);
  transform: scaleX(0);
  transform-origin: left;
  opacity: 0;
  transition: opacity 200ms var(--ease);
  pointer-events: none;
}
.page-progress.on { opacity: 1; animation: progress 1.2s var(--ease) forwards; }
@keyframes progress {
  0% { transform: scaleX(0); }
  60% { transform: scaleX(0.7); }
  100% { transform: scaleX(0.9); }
}
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  padding: 10px 18px;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}
.toast[hidden] { display: none; }

/* ---------- empty / error ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 72px 8px;
  max-width: 560px;
}
.empty-code {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-2);
  line-height: 1;
}
.empty-title { font-size: 1.4rem; font-weight: 700; }
.empty-text { color: var(--text-2); }
.empty-state .btn + .btn { margin-left: 0; }
.error-page { min-height: 60vh; display: flex; align-items: center; }
.error-page .empty-state { padding: 0; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 0;
  margin-top: 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand { margin-bottom: 14px; }
.footer-tag {
  font-size: 0.85rem;
  color: var(--text-2);
  max-width: 34ch;
  line-height: 1.6;
  text-wrap: pretty;
}
.footer-col h2 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 14px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 9px; }
.footer-col a {
  font-size: 0.875rem;
  color: var(--text-2);
  transition: color 120ms var(--ease);
}
.footer-col a:hover { color: var(--text); }
.footer-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0 22px;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-2);
}
.footer-meta-start { font-family: var(--font-mono); font-size: 0.7rem; }
.footer-meta-end { font-family: var(--font-mono); font-size: 0.7rem; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .catalog-layout { grid-template-columns: 1fr; gap: 24px; }
  .facets { display: none; }
  .facets-mobile {
    display: block;
    margin-bottom: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
  }
  .facets-mobile > summary {
    cursor: pointer;
    padding: 12px 16px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-2);
    list-style: none;
  }
  .facets-mobile > summary::-webkit-details-marker { display: none; }
  .facets-mobile > summary::after { content: "+"; float: right; color: var(--text-3); }
  .facets-mobile[open] > summary::after { content: "-"; }
  .facets-mobile .facets-inner { padding: 4px 16px 20px; }
  .facets-mobile .facet-group { margin-bottom: 18px; }
  .facets-mobile .facet-list-scroll { max-height: 160px; }
}
@media (max-width: 720px) {
  .header-inner { gap: 12px; }
  .site-nav { display: none; }
  .header-search { flex: 1; }
  .hero { padding-top: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-col:first-child { grid-column: 1 / -1; }
  .footer-meta { grid-template-columns: 1fr; justify-items: center; gap: 10px; text-align: center; }
  .footer-meta-start, .footer-meta-end { justify-self: center; }
  .meta-row { grid-template-columns: 1fr; gap: 2px; }
  .pub-formats { flex-direction: row; padding: 0 10px 12px; }
}