/* ====================================================================
   ATGRIEŠANĀS — the return
   Two surfaces, one family:
     .surface-deep  — ink + amber, the Studio Zalktis house style (landing,
                      the return, data, appendix index)
     .surface-paper — warm paper, dark ink, for reading 83,000 words without
                      going blind. The reader defaults here; a toggle flips it.
   ==================================================================== */

:root {
  /* house palette — matches studiozalktis.com */
  --ink:        #0e0f12;
  --ink-2:      #15171c;
  --ink-3:      #1c1f26;
  --line:       rgba(255,255,255,0.10);
  --line-2:     rgba(255,255,255,0.18);
  --text:       #ece9e2;
  --text-soft:  #a9a59b;
  --text-dim:   #76736b;
  --amber:      #e9a13b;
  --amber-soft: #f0c074;
  --green:      #5dcaa5;

  /* project accents — the three places */
  --reef:       #4bb3c4;   /* Fiji — reef water */
  --mangrove:   #6faa5c;   /* Belize — mangrove green */
  --baltic:     #c9a227;   /* Latvia — amber */

  --maxw:       1120px;
  --measure:    34rem;     /* reading measure */

  --font-disp:  "Fraunces", Georgia, serif;
  --font-read:  "Literata", Georgia, "Times New Roman", serif;
  --font-body:  "Inter", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { -webkit-font-smoothing: antialiased; overflow-x: hidden; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

/* ------------------------------------------------------- surfaces ---- */
.surface-deep {
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
}
.surface-deep ::selection { background: var(--amber); color: var(--ink); }

.surface-paper {
  --paper:      #f7f3ea;
  --paper-2:    #efe9dc;
  --p-text:     #1e1c18;
  --p-soft:     #55504a;
  --p-dim:      #857f75;
  --p-line:     rgba(30,28,24,0.14);
  --p-accent:   #9a6a1e;
  background: var(--paper);
  color: var(--p-text);
  font-family: var(--font-body);
}
.surface-paper ::selection { background: #f3d9a4; color: #1e1c18; }

/* reader dark mode — same document, night surface */
.surface-paper[data-reading="night"] {
  --paper:      #14161a;
  --paper-2:    #1a1d22;
  --p-text:     #ddd8ce;
  --p-soft:     #a29c92;
  --p-dim:      #7a746a;
  --p-line:     rgba(255,255,255,0.12);
  --p-accent:   var(--amber);
}

/* ------------------------------------------------------------ nav ---- */
.nav {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .85rem clamp(1.1rem, 4vw, 3rem);
  backdrop-filter: blur(14px);
  font-size: .9rem;
}
.surface-deep .nav  { background: rgba(14,15,18,.74); border-bottom: 1px solid var(--line); }
.surface-paper .nav { background: color-mix(in srgb, var(--paper) 82%, transparent); border-bottom: 1px solid var(--p-line); }

.nav__brand {
  display: flex; align-items: baseline; gap: .55rem;
  font-family: var(--font-disp); font-weight: 500; font-size: 1.02rem;
  letter-spacing: .06em; white-space: nowrap;
}
.nav__brand b { font-weight: 500; }
.surface-deep  .nav__brand b { color: var(--amber); }
.surface-paper .nav__brand b { color: var(--p-accent); }
.nav__brand span { font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; opacity: .6; }

.nav__links { display: flex; gap: clamp(.8rem, 2.4vw, 1.8rem); align-items: center; flex-wrap: wrap; }
.surface-deep  .nav__links a { color: var(--text-soft); }
.surface-paper .nav__links a { color: var(--p-soft); }
.nav__links a { transition: color .2s; }
.surface-deep  .nav__links a:hover, .surface-deep  .nav__links a[aria-current] { color: var(--amber); }
.surface-paper .nav__links a:hover, .surface-paper .nav__links a[aria-current] { color: var(--p-accent); }

/* ---------------------------------------------------------- shell ---- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1.1rem, 4vw, 3rem); }
.eyebrow {
  font-size: .74rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--amber); margin-bottom: 1.1rem;
}
.surface-paper .eyebrow { color: var(--p-accent); }

h1, h2, h3, h4 { font-family: var(--font-disp); font-weight: 400; line-height: 1.12; letter-spacing: -.015em; }

/* ---------------------------------------------------------- hero ---- */
.hero { position: relative; padding: clamp(4.5rem, 13vh, 8.5rem) 0 clamp(3rem, 8vh, 5.5rem); overflow: hidden; }
.hero__title { font-size: clamp(2.6rem, 8vw, 5.6rem); margin-bottom: 1.2rem; }
.hero__title em { font-style: normal; color: var(--amber-soft); }
.hero__sub {
  font-family: var(--font-disp); font-size: clamp(1.1rem, 2.4vw, 1.6rem);
  color: var(--text-soft); margin-bottom: 1.8rem; max-width: 30ch; line-height: 1.3;
}
.hero__lede { font-size: clamp(1rem, 1.5vw, 1.14rem); color: var(--text-soft); max-width: 60ch; }
.hero__lede + .hero__lede { margin-top: 1rem; }

/* the sea-floor gradient behind the hero */
.hero::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 60%;
  background: radial-gradient(120% 100% at 20% 100%, rgba(75,179,196,.16), transparent 60%),
              radial-gradient(90% 90% at 85% 100%, rgba(233,161,59,.10), transparent 60%);
  pointer-events: none; z-index: 0;
}
.hero > * { position: relative; z-index: 1; }

/* ---------------------------------------------------------- cards ---- */
.grid { display: grid; gap: 1.1rem; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }

.card {
  display: block; padding: 1.5rem 1.4rem; border-radius: 14px;
  background: var(--ink-2); border: 1px solid var(--line);
  transition: border-color .22s, transform .22s, background .22s;
}
.card:hover { border-color: var(--line-2); transform: translateY(-2px); background: var(--ink-3); }
.card__k { font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--text-dim); margin-bottom: .7rem; }
.card__t { font-family: var(--font-disp); font-size: 1.32rem; margin-bottom: .55rem; }
.card__d { color: var(--text-soft); font-size: .95rem; }
.card[data-place="fiji"]   { border-left: 3px solid var(--reef); }
.card[data-place="belize"] { border-left: 3px solid var(--mangrove); }
.card[data-place="latvia"] { border-left: 3px solid var(--baltic); }
.card[data-place] .card__k { color: var(--text-soft); }

/* --------------------------------------------------------- prose ----- */
.section { padding: clamp(3rem, 8vh, 5.5rem) 0; }
.section + .section { border-top: 1px solid var(--line); }
.surface-paper .section + .section { border-top: 1px solid var(--p-line); }
.section__h { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin-bottom: 1.4rem; }
.prose { max-width: 64ch; }
.prose p { margin-bottom: 1rem; color: var(--text-soft); }
.surface-paper .prose p { color: var(--p-soft); }
.prose strong { color: var(--text); font-weight: 600; }
.surface-paper .prose strong { color: var(--p-text); }
.prose a { border-bottom: 1px solid currentColor; }
.surface-deep .prose a { color: var(--amber-soft); }

/* ---------------------------------------------------------- notes ---- */
.note {
  border-left: 2px solid var(--amber); padding: .9rem 0 .9rem 1.1rem;
  color: var(--text-soft); font-size: .95rem; margin: 1.6rem 0; max-width: 62ch;
}
.surface-paper .note { border-left-color: var(--p-accent); color: var(--p-soft); }

/* ================================================== READER =========== */
.reader { display: grid; grid-template-columns: minmax(0,1fr); }
@media (min-width: 62rem) {
  .reader { grid-template-columns: 17.5rem minmax(0,1fr); align-items: start; }
}

/* --- contents rail --- */
.toc {
  position: sticky; top: 3.4rem; align-self: start;
  max-height: calc(100vh - 3.4rem); overflow-y: auto;
  padding: 1.6rem clamp(1.1rem,3vw,1.6rem) 3rem;
  border-right: 1px solid var(--p-line);
  font-size: .86rem;
  scrollbar-width: thin;
}
@media (max-width: 61.99rem) {
  .toc { position: static; max-height: none; border-right: 0; border-bottom: 1px solid var(--p-line); }
}
.toc__h { font-size: .7rem; letter-spacing: .22em; text-transform: uppercase; color: var(--p-dim); margin-bottom: .9rem; }
.toc ol { list-style: none; }
.toc__sec { margin: 1.3rem 0 .5rem; font-family: var(--font-disp); font-size: .82rem;
            color: var(--p-dim); letter-spacing: .04em; }
.toc a { display: block; padding: .32rem 0; color: var(--p-soft); line-height: 1.35; transition: color .18s; }
.toc a:hover { color: var(--p-accent); }
.toc a[aria-current] { color: var(--p-accent); font-weight: 600; }
.toc__n { color: var(--p-dim); font-variant-numeric: tabular-nums; margin-right: .45rem; }

/* --- the page --- */
.page { padding: clamp(2rem, 6vh, 4rem) clamp(1.1rem, 5vw, 3rem) 6rem; min-width: 0; }
.page__inner { max-width: var(--measure); margin: 0 auto; }
@media (min-width: 62rem) { .page__inner { margin: 0 auto 0 clamp(0rem, 4vw, 5rem); } }

.chapter__k { font-size: .74rem; letter-spacing: .24em; text-transform: uppercase; color: var(--p-accent); margin-bottom: .8rem; }
.chapter__t { font-size: clamp(1.8rem, 4.2vw, 2.6rem); margin-bottom: 2.2rem; line-height: 1.14; }

.doc { font-family: var(--font-read); font-size: 1.055rem; line-height: 1.72; color: var(--p-text); }
.doc p { margin-bottom: 1.15em; text-wrap: pretty; }
.doc p + p { text-indent: 1.4em; }          /* traditional continuous setting */
.doc p.lead, .doc h2 + p, .doc h3 + p { text-indent: 0; }
.doc h2 {
  font-family: var(--font-disp); font-size: 1.42rem; margin: 2.6em 0 .9em;
  padding-top: .3em; line-height: 1.2;
}
.doc h3 { font-family: var(--font-disp); font-size: 1.13rem; margin: 2em 0 .7em; color: var(--p-soft); }
.doc h2:first-child, .doc h3:first-child { margin-top: 0; }
.doc em { font-style: italic; }

/* section anchors, revealed on hover */
.doc h2, .doc h3 { position: relative; }
.doc .anchor {
  position: absolute; left: -1.4em; top: .1em; opacity: 0;
  color: var(--p-dim); font-family: var(--font-body); font-size: .8em;
  transition: opacity .18s; text-decoration: none;
}
.doc h2:hover .anchor, .doc h3:hover .anchor, .anchor:focus { opacity: 1; }

/* abstract block */
.doc .abstract {
  background: var(--paper-2); border-radius: 10px; padding: 1.3rem 1.4rem;
  font-size: .98rem; margin-bottom: 2rem;
}
.doc .abstract p { text-indent: 0; margin-bottom: .7em; }
.doc .abstract p:last-child { margin-bottom: 0; }
.doc .abstract .abstract__k {
  font-family: var(--font-body); font-size: .68rem; letter-spacing: .22em;
  text-transform: uppercase; color: var(--p-dim); display: block; margin-bottom: .6rem;
}

/* references */
.refs { font-family: var(--font-body); font-size: .89rem; line-height: 1.55; }
.refs li {
  list-style: none; padding-left: 1.6em; text-indent: -1.6em;
  margin-bottom: .62em; color: var(--p-soft);
}

/* editorial correction marks */
.corr { border-bottom: 1px dotted var(--p-accent); cursor: help; }

/* figures */
figure.fig { margin: 2rem 0; }
figure.fig img { border-radius: 6px; background: #fff; border: 1px solid var(--p-line); }
figure.fig figcaption {
  font-family: var(--font-body); font-size: .82rem; color: var(--p-dim);
  margin-top: .6rem; line-height: 1.5;
}

/* chapter foot nav */
.pager { display: flex; justify-content: space-between; gap: 1rem; margin-top: 4rem;
         padding-top: 1.6rem; border-top: 1px solid var(--p-line); font-size: .9rem; }
.pager a { color: var(--p-soft); max-width: 46%; }
.pager a:hover { color: var(--p-accent); }
.pager .pager__k { display: block; font-size: .68rem; letter-spacing: .2em;
                   text-transform: uppercase; color: var(--p-dim); margin-bottom: .3rem; }
.pager a:last-child { text-align: right; }

/* reading progress */
.progress { position: fixed; top: 0; left: 0; height: 2px; background: var(--p-accent);
            z-index: 70; width: 0; transition: width .1s linear; }

/* reader controls */
.rc { display: flex; gap: .5rem; align-items: center; }
.rc button {
  font: inherit; font-size: .78rem; padding: .3rem .6rem; border-radius: 6px;
  background: transparent; border: 1px solid var(--p-line); color: var(--p-soft);
  cursor: pointer; transition: border-color .18s, color .18s;
}
.rc button:hover { color: var(--p-accent); border-color: var(--p-accent); }

/* ------------------------------------------------------- footer ------ */
.foot { padding: 3rem 0 4rem; font-size: .86rem; }
.surface-deep  .foot { border-top: 1px solid var(--line);  color: var(--text-dim); }
.surface-paper .foot { border-top: 1px solid var(--p-line); color: var(--p-dim); }
.foot__row { display: flex; flex-wrap: wrap; gap: 1.4rem; justify-content: space-between; }
.foot a { border-bottom: 1px solid transparent; }
.surface-deep .foot a:hover  { color: var(--amber); }
.surface-paper .foot a:hover { color: var(--p-accent); }

/* --------------------------------------------------------- misc ------ */
.tag {
  display: inline-block; font-size: .68rem; letter-spacing: .16em; text-transform: uppercase;
  padding: .22rem .55rem; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-soft);
}
.surface-paper .tag { border-color: var(--p-line); color: var(--p-dim); }

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .7rem 1.15rem; border-radius: 999px; font-size: .9rem;
  border: 1px solid var(--line-2); color: var(--text); transition: all .2s;
}
.btn:hover { border-color: var(--amber); color: var(--amber); }
.btn--solid { background: var(--amber); color: var(--ink); border-color: var(--amber); font-weight: 500; }
.btn--solid:hover { background: var(--amber-soft); border-color: var(--amber-soft); color: var(--ink); }
.btn-row { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 2rem; }

.stat { font-family: var(--font-disp); font-size: clamp(1.9rem, 4vw, 2.7rem); color: var(--amber-soft); line-height: 1; }
.stat + .stat__l { display: block; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase;
                   color: var(--text-dim); margin-top: .5rem; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

.chapter__sub {
  font-family: var(--font-disp); font-size: 1.06rem; line-height: 1.35;
  color: var(--p-soft); margin: -1.5rem 0 2.2rem; max-width: 40ch;
}