/* MNEMO Kompendium — reading experience */

:root {
  --paper: #f5f1e8;
  --paper-deep: #ece6d6;
  --paper-page: #faf6ec;
  --ink: #0e0e0d;
  --ink-soft: #2a2825;
  --ink-mute: #6b6b6b;
  --rule: rgba(14,14,13,0.12);
  --vermillion: #c8401f;
  --vermillion-deep: #9c2d10;
  --gold: #b8924a;
  --gold-deep: #8a6f2f;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'Inter', -apple-system, system-ui, sans-serif;
  --mono: 'JetBrains Mono', Menlo, monospace;
  --ease: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --w-text: 720px;
}
[data-theme="dark"] {
  --paper: #0e0e0d;
  --paper-deep: #1a1816;
  --paper-page: #14110e;
  --ink: #f5f1e8;
  --ink-soft: #d4cfc1;
  --ink-mute: #8a8680;
  --rule: rgba(245,241,232,0.15);
  --vermillion: #e84e2c;
  --gold: #d4ad64;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  transition: background 0.5s var(--ease), color 0.5s var(--ease);
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 36px;
}

/* TOPBAR ============================================ */
.kompendium-topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 36px;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.back-link {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
  transition: color 0.2s;
}
.back-link:hover { color: var(--vermillion); }
.kompendium-brand {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.06em;
}
.kompendium-brand em { color: var(--vermillion); font-style: italic; font-weight: 500; }
.k-controls { display: flex; gap: 10px; align-items: center; }
.lang-toggle {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 6px 10px;
  border: 1px solid var(--rule);
}
[data-lang="pl"] .lang-pl { color: var(--vermillion); font-weight: 700; }
[data-lang="pl"] .lang-en { opacity: 0.4; }
[data-lang="en"] .lang-en { color: var(--vermillion); font-weight: 700; }
[data-lang="en"] .lang-pl { opacity: 0.4; }
.lang-sep { padding: 0 4px; opacity: 0.4; }
.theme-toggle {
  width: 32px; height: 32px;
  border: 1px solid var(--rule);
  font-size: 16px;
  display: grid; place-items: center;
}

/* INDEX PAGE ======================================== */
.index-main { padding: 80px 0 140px; }

.index-hero {
  text-align: center;
  margin-bottom: 100px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--rule);
}
.index-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 30px;
}
.index-title {
  font-family: var(--serif);
  font-size: clamp(60px, 10vw, 140px);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
}
.index-lead {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.4;
  max-width: 720px;
  margin: 0 auto 60px;
  color: var(--ink-soft);
}
.index-meta {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
}
.index-meta > div {
  display: flex; flex-direction: column; align-items: center;
}
.meta-num {
  font-family: var(--serif);
  font-size: 48px;
  font-weight: 500;
  line-height: 1;
  margin-bottom: 8px;
}
.meta-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.part {
  margin-bottom: 100px;
}
.part-header {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 40px;
  align-items: baseline;
  margin-bottom: 50px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--ink);
}
.part-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 56px;
  color: var(--vermillion);
  line-height: 1;
  font-weight: 400;
}
.part-title {
  font-family: var(--serif);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
  grid-column: 2;
}
.part-lead {
  grid-column: 2;
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  color: var(--ink-mute);
}
@media (max-width: 700px) {
  .part-header { grid-template-columns: 1fr; gap: 8px; }
  .part-title, .part-lead { grid-column: 1; }
}

.chapters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}
.chapter-card {
  padding: 30px 26px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
  transition: all 0.3s var(--ease);
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 220px;
  position: relative;
  overflow: hidden;
}
.chapter-card:nth-child(odd) { background: var(--paper); }
.chapter-card:nth-child(even) { background: var(--paper-deep); }
.chapter-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: translateY(100%);
  transition: transform 0.4s var(--ease);
}
.chapter-card:hover::before { transform: translateY(0); }
.chapter-card:hover { color: var(--paper); }
.chapter-card:hover .ch-num { color: var(--vermillion); }
.chapter-card:hover .ch-meta { color: var(--gold); }
.chapter-card > * { position: relative; z-index: 1; }

.ch-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--vermillion);
  transition: color 0.3s;
}
.ch-title {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.ch-title em {
  color: var(--vermillion);
  font-style: italic;
  font-weight: 500;
}
.ch-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-mute);
  flex: 1;
  transition: color 0.3s;
}
.chapter-card:hover .ch-desc { color: color-mix(in srgb, var(--paper) 82%, transparent); }
.ch-meta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.chapter-bruno {
  background:
    linear-gradient(45deg, color-mix(in srgb, var(--vermillion) 8%, transparent) 25%, transparent 25%),
    linear-gradient(-45deg, color-mix(in srgb, var(--vermillion) 8%, transparent) 25%, transparent 25%),
    var(--paper);
  background-size: 24px 24px;
}
.chapter-bruno .ch-title em { font-size: 1.05em; }
.chapter-bruno::before { background: linear-gradient(135deg, var(--ink), var(--vermillion-deep)); }
.chapter-bruno:hover .ch-title em { color: var(--gold); }

.chapter-en .ch-num { color: var(--gold); }

.part-bruno .part-num { color: var(--vermillion); }

@media (max-width: 1000px) { .chapters-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .chapters-grid { grid-template-columns: 1fr; } }

/* VIEWER PAGE ======================================= */
.page-viewer { background: var(--paper); }

.viewer-progress {
  position: fixed; top: 0; left: 0;
  height: 2px;
  background: var(--vermillion);
  z-index: 100;
  width: 0;
  transition: width 0.05s linear;
}

.viewer-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 240px;
  gap: 60px;
  padding: 60px 36px 120px;
  max-width: 1400px;
  margin: 0 auto;
}

.viewer-toc {
  position: sticky; top: 80px;
  align-self: start;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 20px;
}
.toc-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--vermillion);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}
.toc-list { list-style: none; padding: 0; }
.toc-list li {
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.4;
}
.toc-list a {
  display: block;
  padding: 6px 0 6px 16px;
  color: var(--ink-mute);
  border-left: 1px solid var(--rule);
  transition: all 0.2s;
}
.toc-list a:hover { color: var(--ink); border-left-color: var(--vermillion); }
.toc-list a.active { color: var(--vermillion); border-left-color: var(--vermillion); }
.toc-list .toc-h3 { padding-left: 32px; font-size: 12px; opacity: 0.85; }

.viewer-meta {
  position: sticky; top: 80px;
  align-self: start;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.viewer-meta > div { margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--rule); }
.viewer-meta .meta-label { display: block; margin-bottom: 6px; }
.viewer-meta .meta-value {
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
}

@media (max-width: 1100px) {
  .viewer-layout { grid-template-columns: 1fr; gap: 40px; }
  .viewer-toc, .viewer-meta { position: static; max-height: none; overflow-y: visible; padding-right: 0; display: none; }
}

/* ARTICLE TYPOGRAPHY =============================== */
.article {
  max-width: var(--w-text);
  margin: 0 auto;
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.article-header {
  margin-bottom: 80px;
  padding-bottom: 40px;
  border-bottom: 2px solid var(--ink);
}
.article-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--vermillion);
  margin-bottom: 24px;
}
.article-title {
  font-family: var(--serif);
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 24px;
}
.article-lead {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink-mute);
}

/* article body content (markdown rendered) */
.article-body h1 { display: none; } /* H1 is the title, hide doubled */
.article-body h2 {
  font-family: var(--serif);
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 80px 0 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ink);
  scroll-margin-top: 80px;
}
.article-body h2:first-child { margin-top: 0; }
.article-body h3 {
  font-family: var(--serif);
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 500;
  line-height: 1.2;
  color: var(--ink);
  margin: 50px 0 16px;
  scroll-margin-top: 80px;
}
.article-body h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--vermillion);
  margin: 36px 0 12px;
}
.article-body p {
  margin-bottom: 22px;
}
.article-body p:first-of-type::first-letter,
.article-body > p:first-child::first-letter {
  font-family: var(--serif);
  float: left;
  font-size: 84px;
  line-height: 0.85;
  font-weight: 500;
  padding: 8px 14px 0 0;
  color: var(--vermillion);
}
/* drop-cap only on first <p> after h2 */
.article-body h2 + p::first-letter {
  font-family: var(--serif);
  float: left;
  font-size: 84px;
  line-height: 0.85;
  font-weight: 500;
  padding: 8px 14px 0 0;
  color: var(--vermillion);
}

.article-body strong {
  font-weight: 600;
  color: var(--ink);
}
.article-body em {
  font-style: italic;
  font-family: var(--serif);
  font-size: 1.05em;
}

.article-body a {
  color: var(--vermillion);
  border-bottom: 1px solid var(--vermillion);
  transition: all 0.2s;
}
.article-body a:hover { background: var(--vermillion); color: var(--paper); border-bottom-color: var(--vermillion); }

.article-body ul, .article-body ol {
  padding-left: 28px;
  margin-bottom: 28px;
}
.article-body li {
  margin-bottom: 10px;
  padding-left: 8px;
}
.article-body li::marker { color: var(--vermillion); }

.article-body blockquote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink);
  padding: 30px 0 30px 32px;
  margin: 40px 0;
  border-left: 3px solid var(--vermillion);
  background: linear-gradient(to right, var(--paper-deep), transparent);
}
.article-body blockquote p { margin-bottom: 0; }
.article-body blockquote p::first-letter { all: unset; }

.article-body table {
  width: 100%;
  margin: 32px 0;
  border-collapse: collapse;
  font-size: 15px;
  font-family: var(--sans);
}
.article-body th, .article-body td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
}
.article-body th {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vermillion);
  font-weight: 500;
  border-bottom-color: var(--ink);
}
.article-body tr:hover { background: var(--paper-deep); }

.article-body code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--paper-deep);
  padding: 2px 6px;
  border: 1px solid var(--rule);
}
.article-body pre {
  background: var(--paper-deep);
  padding: 24px;
  border-left: 3px solid var(--gold);
  margin: 28px 0;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
}
.article-body pre code { background: transparent; padding: 0; border: 0; }

.article-body hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 60px 0;
  position: relative;
  text-align: center;
}
.article-body hr::after {
  content: '✦';
  position: absolute;
  left: 50%; top: -10px;
  transform: translateX(-50%);
  background: var(--paper);
  padding: 0 16px;
  color: var(--vermillion);
  font-size: 14px;
}

/* navigation between chapters */
.chapter-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 100px;
  padding-top: 40px;
  border-top: 2px solid var(--ink);
}
.chapter-nav a {
  padding: 24px;
  border: 1px solid var(--ink);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.3s var(--ease);
}
.chapter-nav a:hover {
  background: var(--ink);
  color: var(--paper);
}
.chapter-nav .nav-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--vermillion);
}
.chapter-nav .nav-title {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.1;
  font-weight: 500;
}
.chapter-nav a:nth-child(2) { text-align: right; }

/* loading state */
.article-loading {
  text-align: center;
  padding: 100px 0;
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* article-error */
.article-error {
  padding: 60px 30px;
  text-align: center;
  border: 1px solid var(--vermillion);
  margin: 40px 0;
}

/* selection */
::selection { background: var(--vermillion); color: var(--paper); }

/* scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--paper-deep); }
::-webkit-scrollbar-thumb { background: var(--ink); border: 2px solid var(--paper-deep); }
::-webkit-scrollbar-thumb:hover { background: var(--vermillion); }