/* Вендоренные шрифты (Google Fonts, подмножества cyrillic+latin) — офлайн, без CDN. */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/JetBrainsMono-400-normal-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/JetBrainsMono-400-normal-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/JetBrainsMono-500-normal-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/JetBrainsMono-500-normal-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/JetBrainsMono-600-normal-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/JetBrainsMono-600-normal-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Spectral';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/Spectral-400-italic-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Spectral';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/Spectral-400-italic-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Spectral';
  font-style: italic;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/Spectral-500-italic-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Spectral';
  font-style: italic;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/Spectral-500-italic-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Spectral';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/Spectral-400-normal-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Spectral';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/Spectral-400-normal-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Spectral';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/Spectral-500-normal-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Spectral';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/Spectral-500-normal-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Spectral';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/Spectral-600-normal-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Spectral';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/Spectral-600-normal-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ============================================================= *
 *  Глиняные таблички — статический сайт математического дневника
 *  Дизайн-токены портированы из шаблона Math Diary (oklch, две темы).
 *  Тема выбирается атрибутом data-theme на <html> (см. bootstrap в шапке
 *  страницы и переключатель в palette.js); дефолт — из prefers-color-scheme.
 * ============================================================= */

:root,
:root[data-theme="dark"] {
  --bg: oklch(0.16 0.008 255);
  --panel: oklch(0.185 0.008 255);
  --panel-top: oklch(0.175 0.008 255);
  --card: oklch(0.205 0.009 255);
  --border: oklch(0.26 0.01 255);
  --border-soft: oklch(0.24 0.01 255);
  --text-hi: oklch(0.94 0.006 255);
  --text-mid: oklch(0.80 0.008 255);
  --text-lo: oklch(0.55 0.008 255);
  --text-faint: oklch(0.48 0.008 255);
  --accent: oklch(0.80 0.10 82);
  --accent-ink: oklch(0.18 0.02 82);
  --accent-soft: oklch(0.26 0.02 82 / 0.35);
  --input-bg: oklch(0.145 0.008 255);
  --rule: oklch(0.34 0.01 255);
  --rule-accent: oklch(0.80 0.10 82 / 0.5);
  /* окружения (определение / утверждение / вычисление / доказательство) */
  --def: oklch(0.72 0.10 245);
  --thm: oklch(0.74 0.12 155);
  --comp: oklch(0.80 0.10 82);
  --proof: oklch(0.55 0.008 255);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}

:root[data-theme="light"] {
  --bg: oklch(0.972 0.006 90);
  --panel: oklch(0.945 0.008 90);
  --panel-top: oklch(0.955 0.007 90);
  --card: oklch(0.995 0.004 90);
  --border: oklch(0.88 0.01 90);
  --border-soft: oklch(0.91 0.008 90);
  --text-hi: oklch(0.27 0.012 80);
  --text-mid: oklch(0.42 0.012 80);
  --text-lo: oklch(0.54 0.01 80);
  --text-faint: oklch(0.62 0.01 80);
  --accent: oklch(0.56 0.12 62);
  --accent-ink: oklch(0.99 0.01 90);
  --accent-soft: oklch(0.56 0.12 62 / 0.14);
  --input-bg: oklch(0.99 0.004 90);
  --rule: oklch(0.80 0.01 90);
  --rule-accent: oklch(0.56 0.12 62 / 0.45);
  --def: oklch(0.50 0.12 245);
  --thm: oklch(0.50 0.13 155);
  --comp: oklch(0.55 0.12 62);
  --proof: oklch(0.62 0.01 80);
  --shadow: 0 24px 64px rgba(40, 34, 20, 0.18);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-mid);
  font-family: "Spectral", Georgia, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.82; }

::selection { background: var(--accent-soft); }
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 6px;
  border: 3px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-track { background: transparent; }

.mono, kbd, .art-kind, .card-kind, .card-date, .art-date, .nav-dir,
.chip, .secnum, .toc, .bar-btn {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

/* ---------------------------------------------------- app bar */

.app-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px max(18px, env(safe-area-inset-left)) 12px;
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 17px;
  color: var(--text-hi);
}
.brand-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-soft);
  flex: none;
}
.brand-dot.big { width: 13px; height: 13px; }
.bar-spacer, .crumbs { flex: 1; }
.crumbs { color: var(--text-lo); font-size: 14px; }
.crumbs a { color: var(--text-lo); }
.bar-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--text-lo);
  font-size: 12px;
  cursor: pointer;
  transition: border-color .15s, color .15s;
}
.bar-btn:hover { border-color: var(--accent); color: var(--text-mid); }
.bar-btn kbd {
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 10.5px;
}
.theme-toggle { min-width: 40px; justify-content: center; }

main {
  max-width: 50rem;
  margin: 0 auto;
  padding: 30px 26px 90px;
}

/* ---------------------------------------------------- feed */

.feed-head { margin-bottom: 26px; }
.site-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 30px;
  font-weight: 600;
  color: var(--text-hi);
  margin: 6px 0 2px;
}
.site-sub { color: var(--text-lo); margin: 0; font-size: 15px; }

.feed-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  margin-bottom: 8px;
}
.feed-filters .filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 16px;
  padding: 4px 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  cursor: pointer;
}
.feed-filters .filter-count {
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: var(--text-lo);
  margin-left: 2px;
}
.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
}

.feed { border-top: 1px solid var(--border-soft); }
.card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 15px 10px;
  border-bottom: 1px solid var(--border-soft);
  cursor: pointer;
  transition: background .12s;
}
.card:hover { background: var(--card); }
.card.is-hidden { display: none; }
.card-mark {
  flex: none;
  width: 3px;
  align-self: stretch;
  border-radius: 1px;
  background: var(--border);
}
.card.kind-conv .card-mark { background: var(--accent); }
.card.kind-entry .card-mark { background: var(--thm); }
.card-main { flex: 1; min-width: 0; }
.card-head { display: flex; align-items: baseline; gap: 12px; }
.card-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-hi);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.card:hover .card-title { color: var(--text-hi); }
.card-kind {
  flex: none;
  font-size: 10.5px;
  letter-spacing: 0.5px;
  color: var(--text-lo);
  text-transform: uppercase;
}
.card-kind.conv { color: var(--accent); }
.card-kind.entry { color: var(--thm); }
.card-sum {
  line-height: 1.5;
  font-size: 14px;
  color: var(--text-lo);
  margin: 3px 0 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}
.card-tags {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  margin-top: 8px;
  overflow: hidden;
  max-height: 24px;
}
.card-tags:empty { display: none; }
.card-date {
  flex: none;
  align-self: flex-start;
  padding-top: 3px;
  width: 84px;
  text-align: right;
  font-size: 11px;
  color: var(--text-faint);
}
.card-date .card-year { display: block; opacity: 0.7; }

/* tag chips (feed cards + article) */
.chip {
  display: inline-block;
  background: transparent;
  color: var(--text-lo);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 9px;
  font-size: 11px;
  cursor: pointer;
  white-space: nowrap;
}
.chip:hover { border-color: var(--accent); color: var(--accent); opacity: 1; }

.feed-empty {
  text-align: center;
  padding: 70px 20px;
  color: var(--text-lo);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
}

/* ---------------------------------------------------- article */

.dialog { max-width: 44rem; margin: 0 auto; }

.art-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-lo);
  margin-bottom: 16px;
}
.art-date { color: var(--text-mid); }
.art-kind { letter-spacing: 0.5px; text-transform: uppercase; }
.art-kind.conv { color: var(--accent); }
.art-kind.entry { color: var(--thm); }

h1, h2, h3 { color: var(--text-hi); font-weight: 600; line-height: 1.2; }
.dialog > h1, h1#top {
  font-size: 33px;
  margin: 0 0 22px;
  letter-spacing: 0.1px;
  text-wrap: pretty;
}
h2 { font-size: 22px; margin: 2rem 0 0.7rem; }
h3 { font-size: 18px; margin: 1.5rem 0 0.5rem; }
.secnum { color: var(--text-lo); font-weight: 400; margin-right: 0.15em; }

/* question box — стилизован как реплика «я спрашиваю» из шаблона */
.question {
  border-left: 2px solid var(--rule-accent);
  background: var(--panel);
  border-radius: 0 8px 8px 0;
  padding: 12px 18px;
  margin: 0 0 26px;
}
.question p { margin: 0.3rem 0; }
.question p:first-child { margin-top: 0; }
.question p:last-child { margin-bottom: 0; }
.question strong:first-child {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 5px;
  font-weight: 500;
}

/* local TOC */
.toc {
  font-size: 13.5px;
  margin: 0 0 2rem;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
}
.toc-title {
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-mid);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-size: 10.5px;
}
.toc ol { margin: 0; padding-left: 0; list-style: none; }
.toc ol ol { padding-left: 1.2rem; }
.toc li { margin: 0.2rem 0; }
.toc a { color: var(--text-mid); }
.toc a:hover { color: var(--accent); }

/* numbered environments (mirror dialogs/lib.typ) */
.env {
  margin: 1.2rem 0;
  padding: 0.4rem 0 0.4rem 0.9rem;
  border-left: 2px solid;
}
.env p:first-child { margin-top: 0; }
.env p:last-child { margin-bottom: 0; }
.env-def  { border-color: var(--def); }
.env-thm  { border-color: var(--thm); }
.env-comp { border-color: var(--comp); }
.env-proof { border-color: var(--proof); border-left-style: dotted; }
.env-proof > p:last-of-type::after { content: " ∎"; }
.envhead { color: var(--text-hi); }

/* math */
span.math.display {
  display: block;
  overflow-x: auto;
  overflow-y: hidden;
  text-align: center;
  margin: 0.9rem 0;
}
.katex { font-size: 1.04em; }
.math-error, .xref-broken { color: #e0555f; }
.xref { color: var(--accent); }
.diagram-stub { color: var(--text-lo); font-style: italic; }

img { max-width: 100%; }
:root[data-theme="dark"] img.invertible,
:root[data-theme="dark"] .dialog img {
  filter: invert(0.92) hue-rotate(180deg);
  background: transparent;
}

/* article tag chips + prev/next nav */
.art-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--border-soft);
}
.art-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 24px;
}
.nav-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  min-width: 0;
}
.nav-card:hover { border-color: var(--accent); opacity: 1; }
.nav-card.prev { grid-column: 1; align-items: flex-start; text-align: left; }
.nav-card.next { grid-column: 2; align-items: flex-end; text-align: right; }
.nav-dir { font-size: 10.5px; color: var(--text-lo); }
.nav-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-hi);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

/* ---------------------------------------------------- day page */
.day-title { color: var(--text-hi); font-size: 30px; margin: 0 0 0.5rem; }
.day-toc { margin-bottom: 2.5rem; }
hr.dialog-sep {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3.5rem 0;
}

/* ---------------------------------------------------- palette (injected by palette.js) */
.pal-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
}
.pal {
  position: fixed;
  left: 50%;
  top: 80px;
  transform: translateX(-50%);
  z-index: 90;
  width: min(92vw, 600px);
  max-height: calc(100vh - 140px);
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.pal-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--border-soft);
}
.pal-search .slash { color: var(--accent); font-family: "JetBrains Mono", monospace; }
.pal-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-hi);
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
}
.pal-search input::placeholder { color: var(--text-faint); }
.pal-esc {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
  color: var(--text-lo);
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  cursor: pointer;
}
.pal-types {
  display: flex;
  gap: 7px;
  padding: 11px 18px;
  border-bottom: 1px solid var(--border-soft);
}
.pal-type {
  background: transparent;
  color: var(--text-mid);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  cursor: pointer;
}
.pal-type.active {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 600;
}
.pal-body { flex: 1; overflow-y: auto; padding: 8px; }
.pal-section {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 1.2px;
  color: var(--text-lo);
  text-transform: uppercase;
  padding: 10px 12px 4px;
}
.pal-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  background: transparent;
  color: var(--text-mid);
  border: none;
  border-radius: 9px;
  padding: 10px 12px;
  font-family: "Spectral", serif;
  font-size: 15px;
  cursor: pointer;
}
.pal-row:hover, .pal-row.sel { background: var(--accent-soft); color: var(--accent); }
.pal-row .r-left { display: flex; align-items: center; gap: 9px; min-width: 0; }
.pal-row .r-title {
  color: var(--text-hi);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.pal-row.sel .r-title { color: var(--accent); }
.pal-row .r-meta, .pal-row .r-count {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--text-faint);
  flex: none;
}
.pal-row .r-caret { font-size: 9px; color: var(--text-lo); width: 12px; }
.pal-row.day { padding-left: 34px; font-size: 14px; }
.pal-foot {
  display: flex;
  gap: 14px;
  padding: 10px 18px;
  border-top: 1px solid var(--border-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  color: var(--text-faint);
}
.pal-empty {
  text-align: center;
  padding: 30px;
  color: var(--text-lo);
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
}

/* ---------------------------------------------------- chat (ask.html) */
.ask-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}
.ask-btn:hover { opacity: 0.9; color: var(--accent-ink); border-color: var(--accent); }

.chat { max-width: 47.5rem; margin: 0 auto; }
.chat-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--text-lo);
}
.chat-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 10.5px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}
.live-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-soft);
}
.chat-date { color: var(--text-mid); }
.save-btn {
  background: var(--accent);
  border: none;
  border-radius: 7px;
  padding: 7px 14px;
  color: var(--accent-ink);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}
.save-btn[disabled] { opacity: 0.6; cursor: default; }

.chat-settings {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  margin-bottom: 26px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.cs-title {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 1.2px;
  color: var(--text-lo);
  text-transform: uppercase;
  margin-bottom: 9px;
}
.cs-opts { display: flex; gap: 7px; flex-wrap: wrap; }
.cs-opt {
  background: var(--input-bg);
  color: var(--text-mid);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 5px 13px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  cursor: pointer;
}
.cs-opt.active {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 600;
}
.cs-group textarea {
  width: 100%;
  resize: vertical;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 12px;
  color: var(--text-hi);
  font-family: "Spectral", serif;
  font-size: 14.5px;
  line-height: 1.5;
  outline: none;
}
.cs-note {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  color: var(--text-faint);
}

.chat-title {
  font-size: 33px;
  margin: 0 0 26px;
  letter-spacing: 0.1px;
}
.chat-offline {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--comp);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 24px;
  font-size: 15px;
  color: var(--text-mid);
}
.chat-log { display: flex; flex-direction: column; gap: 16px; }
.chat-hint { color: var(--text-lo); font-size: 15.5px; line-height: 1.6; font-style: italic; }
.chat-msg { border-left: 2px solid var(--rule); padding-left: 16px; }
.chat-msg.claude { border-left-color: var(--rule-accent); }
.chat-role {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.8px;
  color: var(--text-lo);
  margin-bottom: 5px;
}
.chat-msg.claude .chat-role { color: var(--accent); }
.chat-body { line-height: 1.7; font-size: 16.5px; color: var(--text-mid); }
.chat-body p { margin: 0 0 0.7em; }
.chat-body p:last-child { margin-bottom: 0; }
.stream-cursor {
  display: inline-block;
  width: 8px; height: 15px;
  background: var(--accent);
  vertical-align: -2px;
  margin-left: 2px;
}
/* формула появляется целиком (math-безопасный стрим) — смягчаем всплытие */
@keyframes math-fade { from { opacity: 0; } to { opacity: 1; } }
.math-pop { animation: math-fade 0.35s ease; }
/* скрытые размышления Claude 5+: только счётчик токенов */
.think-note {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--accent);
  margin: 0 0 7px;
}
.think-note.done { color: var(--text-lo); }
.think-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  background: none;
  border: none;
  padding: 0;
  margin: 0 0 7px;
  color: var(--text-lo);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  cursor: pointer;
}
.think-toggle .caret { font-size: 9px; }
.think-body {
  border-left: 2px solid var(--border-soft);
  padding: 2px 0 2px 12px;
  margin: 0 0 10px;
  color: var(--text-lo);
  font-size: 14px;
  line-height: 1.6;
  font-style: italic;
}
.chat-busy {
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: var(--accent);
  margin-top: 14px;
}
.chat-error {
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: oklch(0.68 0.16 25);
  margin-top: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.chat-inputbox {
  margin-top: 32px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 6px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
  transition: border-color 0.15s;
}
.chat-inputbox:focus-within { border-color: var(--accent); }
.chat-inputbox textarea {
  width: 100%;
  min-height: 84px;
  resize: none;
  background: transparent;
  border: none;
  padding: 12px 14px 4px;
  color: var(--text-hi);
  font-family: "Spectral", serif;
  font-size: 16px;
  line-height: 1.55;
  outline: none;
}
.chat-inputbox textarea::placeholder { color: var(--text-faint); }
.chat-input-foot {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 8px 6px 14px;
}
.chat-kbd-hint {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  color: var(--text-faint);
}
#send-btn {
  width: 34px; height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent-ink);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
#send-btn[disabled] {
  background: var(--input-bg);
  border-color: var(--border);
  color: var(--text-faint);
  cursor: default;
}

/* ---------------------------------------------------- setup (авторизация) */
.setup { max-width: 44rem; margin: 0 auto; }
.setup-status {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--comp);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 15px;
}
.setup-status.ok { border-left-color: var(--thm); }
.setup-steps { line-height: 1.7; padding-left: 1.4rem; }
.setup-steps code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85em;
  background: var(--panel);
  padding: 1px 5px;
  border-radius: 4px;
}
.setup-link {
  margin-top: 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
}
.setup-link a { font-family: "JetBrains Mono", monospace; font-size: 13px; word-break: break-all; }
.setup-link input {
  width: 100%;
  margin: 10px 0;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 12px;
  color: var(--text-hi);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  outline: none;
}
.setup-link input:focus { border-color: var(--accent); }
.setup-done { color: var(--thm); }

/* ---------------------------------------------------- login */
body.login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.login-theme { position: absolute; top: 22px; right: 24px; }
.login-card {
  width: min(92vw, 420px);
  display: flex;
  flex-direction: column;
}
.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-hi);
  letter-spacing: 0.2px;
  margin-bottom: 10px;
}
.login-sub {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.4px;
  color: var(--text-lo);
  margin-bottom: 34px;
}
.login-path {
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  color: var(--text-faint);
  margin-bottom: 22px;
}
.login-path span { color: var(--accent); }
.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-form label {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 1.2px;
  color: var(--text-lo);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.login-form input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 12px 14px;
  color: var(--text-hi);
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}
.login-form input:focus { border-color: var(--accent); }
.login-passwrap { position: relative; }
.login-passwrap input { padding-right: 86px; }
.login-passwrap button {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  min-height: 32px;
  background: none;
  border: none;
  color: var(--text-faint);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  cursor: pointer;
}
#login-btn {
  width: 100%;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 9px;
  padding: 13px;
  color: var(--accent-ink);
  font-family: "JetBrains Mono", monospace;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  margin-top: 4px;
}
#login-btn[disabled] {
  background: var(--input-bg);
  border-color: var(--border);
  color: var(--text-lo);
  cursor: default;
}
.login-hints, .login-foot {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--text-faint);
}
.login-foot {
  justify-content: space-between;
  margin-top: 42px;
  padding-top: 18px;
  border-top: 1px solid var(--border-soft);
}
@media (pointer: coarse) {
  .login-card input { font-size: 16.5px; }
  .login-card button { min-height: 44px; }
}

/* ---------------------------------------------------- folders (навигация) */
.folders { max-width: 47rem; margin: 0 auto; }
.folders-head { display: flex; align-items: baseline; gap: 14px; }
.folders-head .chat-title { margin-bottom: 8px; }
.folders-stats {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--text-lo);
}
.folders-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 6px 0 18px;
}
#folder-filter {
  flex: 1;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text-hi);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  outline: none;
}
#folder-filter:focus { border-color: var(--accent); }
.ftool {
  background: none;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 7px 12px;
  color: var(--text-mid);
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  cursor: pointer;
}
.ftool:hover { border-color: var(--accent); color: var(--accent); }
.folder-root {
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  color: var(--text-lo);
  padding: 0 0 8px 2px;
}
.folder-tree { font-family: "JetBrains Mono", monospace; font-size: 13.5px; }
.tree-row {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 8px;
  border-radius: 7px;
  text-align: left;
  line-height: 1.3;
}
.tree-dir { cursor: pointer; color: var(--text-mid); }
.tree-dir:hover, a.tree-file:hover { background: var(--card); }
.tree-dir .tw { width: 12px; color: var(--text-lo); font-size: 10px; }
.tree-dir .tname { color: var(--accent); }
.tree-dir .tcount { color: var(--text-faint); font-size: 11px; }
a.tree-file { color: var(--text-mid); }
a.tree-file .tname { color: var(--text-hi); }
.tree-file.disabled { color: var(--text-faint); cursor: default; }
.tree-file .tnote {
  color: var(--text-faint);
  font-size: 10.5px;
  margin-left: 8px;
}
.tree-empty {
  padding: 40px 10px;
  text-align: center;
  color: var(--text-lo);
}
.tree-dir { position: relative; }
.tmenu {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 15px;
  cursor: pointer;
  padding: 0 6px;
  border-radius: 5px;
}
.tmenu:hover { color: var(--accent); background: var(--panel); }
.tree-menu { display: flex; gap: 8px; flex-wrap: wrap; padding-top: 2px; padding-bottom: 6px; }
.tmact {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 6px 12px;
  color: var(--text-mid);
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  cursor: pointer;
}
.tmact:hover { border-color: var(--accent); color: var(--accent); }
.tmact.danger:hover { border-color: oklch(0.6 0.16 25); color: oklch(0.65 0.17 25); }

/* исходник и markdown-страницы */
.src-note {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--text-lo);
  margin-bottom: 10px;
}
pre.src {
  background: var(--panel);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 16px 18px;
  overflow-x: auto;
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text-mid);
  white-space: pre;
}
.md-page h1 { font-size: 30px; margin: 0 0 18px; }
.md-page pre {
  background: var(--panel);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
}
.md-page code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.88em;
}

/* ---------------------------------------------------- mobile */
@media (pointer: coarse), (max-width: 640px) {
  body { font-size: 17px; }
  main { padding: 22px 18px 80px; }
  .dialog > h1, h1#top { font-size: 27px; }
  .art-nav { grid-template-columns: 1fr; }
  .nav-card.prev, .nav-card.next {
    grid-column: 1;
    align-items: flex-start;
    text-align: left;
  }
  .bar-btn span { display: none; }
  .card-date { width: 58px; }
  .chat-title { font-size: 27px; }
  .chat-body { font-size: 16px; }
}