/* ============================================
   Tokens
   ============================================ */
:root {
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --color-bg: #fffcf4;
  --color-text: #121212;
  --color-muted: #6e6358;
  --color-accent: #a0522d;
  --color-border: #e8e2d6;

  --space-xs: clamp(0.25rem, 0.2rem + 0.25vw, 0.5rem);
  --space-s: clamp(0.5rem, 0.4rem + 0.5vw, 1rem);
  --space-m: clamp(1rem, 0.8rem + 1vw, 1.5rem);
  --space-l: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
  --space-xl: clamp(2rem, 1.5rem + 2.5vw, 4rem);

  --text-xs: clamp(0.8125rem, 0.8016rem + 0.0543vi, 0.8438rem);
  --text-s: clamp(0.875rem, 0.8533rem + 0.1087vi, 0.9375rem);
  --text-base: clamp(0.9375rem, 0.894rem + 0.2174vi, 1.0625rem);
  --text-m: clamp(1.0312rem, 0.9769rem + 0.2717vi, 1.1875rem);
  --text-l: clamp(1.1562rem, 1.0802rem + 0.3804vi, 1.375rem);
  --text-xl: clamp(1.3125rem, 1.2038rem + 0.5435vi, 1.625rem);

  --shadow-s: 0 2px 12px rgba(0,0,0,.08);
  --shadow-m: 0 4px 20px rgba(0,0,0,.08), 0 1px 3px rgba(0,0,0,.04);
  --shadow-l: 0 8px 30px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.04);
}

/* ============================================
   Reset
   ============================================ */
*, *::before, *::after { box-sizing: border-box; }

body, h1, h2, h3, p, figure, blockquote, ol, ul { margin: 0; }
ol, ul { padding: 0; list-style: none; }

html {
  font-size: clamp(15px, 14.5px + 0.25vw, 17px);
  line-height: 1.75;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  background: var(--color-bg);
}

body {
  font-family: var(--font-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  overflow-wrap: break-word;
}

a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 0.15em; }
a:hover { opacity: 0.7; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: rgba(160, 82, 45, 0.15); }
img, picture, svg { display: block; max-inline-size: 100%; block-size: auto; margin-inline: auto; }
input, button, textarea, select { font: inherit; }

h1, h2 {
  font-size: var(--text-xl);
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-wrap: balance;
}

/* ============================================
   Compositions
   ============================================ */
.stack {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.stack > * { margin-block: 0; }
.stack > * + * { margin-block-start: var(--flow-space, var(--space-s)); }

.center {
  inline-size: 100%;
  max-inline-size: var(--measure, 34rem);
  margin-inline: auto;
  padding: var(--space-s) var(--space-m);
}

.cover {
  display: flex;
  flex-direction: column;
  min-block-size: 100vh;
  min-block-size: 100dvh;
}

.cover > * { margin-block: 0; }
.cover > main { display: flex; flex-direction: column; }
.cover:not(.home) > main { flex: 1; }

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap, var(--space-m));
  justify-content: var(--cluster-justify, center);
  align-items: var(--cluster-align, baseline);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(var(--grid-min, 15rem), 100%), 1fr));
  gap: var(--grid-gap, var(--space-l));
}

.frame {
  aspect-ratio: var(--frame-ratio, 3/4);
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  background-size: cover;
  background-position: center;

  & > img { inline-size: 100%; block-size: 100%; object-fit: cover; color: transparent; }
}

/* ============================================
   Utilities
   ============================================ */
.text-center { text-align: center; }

.titled > h1::after {
  content: "";
  display: block;
  inline-size: 1.5rem;
  block-size: 1px;
  background: var(--color-border);
  margin: var(--space-s) auto 0;
}

.tagline {
  --flow-space: var(--space-xs);
  font-size: var(--text-s);
  color: var(--color-muted);
  letter-spacing: 0.1em;
}

.meta {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}

.link-muted {
  font-family: var(--font-sans);
  color: var(--color-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xs) 0;
}

/* ============================================
   Blocks
   ============================================ */

/* -- Skip link -- */
.skip-link {
  position: absolute;
  inset-inline-start: -100%;
  padding: var(--space-xs) var(--space-s);
  background: var(--color-bg);
  text-decoration: none;

  &:focus { inset-inline-start: var(--space-s); inset-block-start: var(--space-s); z-index: 1; }
}

/* -- Site header -- */
.site-header {
  padding: var(--space-s) var(--space-l);
}

/* -- Breadcrumb -- */
.breadcrumb {
  font-size: var(--text-s);
  font-style: italic;
  --cluster-justify: flex-start;
  --gap: var(--space-xs);

  & ol { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-xs); align-items: baseline; }
  & li + li::before { content: "/"; color: var(--color-border); font-style: normal; margin-inline-end: var(--space-xs); }
  & a { color: var(--color-muted); text-decoration: none; }
  & a:hover { color: var(--color-text); }
}

/* -- Hero -- */
.hero {
  --flow-space: var(--space-xs);
  padding-block-start: var(--space-s);
}

.home-nav {
  --gap: var(--space-m);
  font-size: var(--text-s);
}

.hero-illustration {
  max-inline-size: min(16rem, 70vw);
  margin-block-start: var(--space-m);
}


/* -- Collections grid -- */
.collections-grid {
  --grid-min: min(16rem, 70vw);
  --grid-gap: var(--space-xl) var(--space-m);
  padding-block: var(--space-l) var(--space-xl);
  max-inline-size: min(56rem, 100%);
  margin-inline: auto;
}

/* -- Collection card -- */
.collection-card {
  --flow-space: var(--space-s);
  display: block;
  text-align: center;
  color: var(--color-text);

  &, &:hover { text-decoration: none; }
  & h2 { font-size: clamp(0.95rem, 0.91rem + 0.22vw, 1.1rem); font-weight: 400; font-style: italic; letter-spacing: 0.03em; line-height: 1.4; }
  & .frame { max-inline-size: 16rem; margin-inline: auto; border-radius: 2px; box-shadow: var(--shadow-m); }
}

/* -- Collection detail -- */
.collection-detail {
  --flow-space: var(--space-xs);
  padding-block: var(--space-s);
}

.cover-large {
  inline-size: min(16rem, 70vw);
  aspect-ratio: 3 / 4;
  object-fit: cover;
  margin-inline: auto;
  border-radius: 2px;
  box-shadow: var(--shadow-l);
  color: transparent;
}

.cover-figure {
  margin-block-start: var(--space-l);

  & figcaption { margin-block-start: var(--space-xs); font-style: italic; }
}

.credit {
  font-style: italic;
  font-size: var(--text-xs);
  opacity: 0.7;
}

.cover-link { text-decoration: none; }

/* -- Table of contents -- */
.toc {
  text-align: left;
  margin-block-start: var(--space-xl);
  padding-block-start: var(--space-l);
  border-block-start: 1px solid var(--color-border);

  & ol { list-style: none; }
  & li { padding: var(--space-xs) 0; }
}

.toc-section {
  padding-block-start: var(--space-m);

  & > a {
    font-style: italic;
    color: var(--color-accent);
    text-decoration: none;
    display: block;
    padding: var(--space-xs) 0;
  }
}

.toc-poems { padding-inline-start: var(--space-m); }

.toc-poem a {
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-xs) 0;

  &:hover { color: var(--color-accent); }
}

/* -- Interlude & image in ToC -- */
.toc-interlude {
  display: block;
  text-align: center;
  font-style: italic;
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-xs) 0;
  line-height: 1.6;

  &:hover { color: var(--color-accent); }
}
.interlude-page {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-text);
  line-height: 1.8;
  padding-block: var(--space-xl);
}

/* -- Poem -- */
.chapter-content {
  flex: 1;
  justify-content: center;

  & .poem-image img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
  }
}

.poem-content {
  --flow-space: var(--space-m);
  padding-block: var(--space-s) var(--space-m);

  & h1 { color: var(--color-accent); }

  & figure { margin-inline: auto; }
}

.poem-epigraph {
  font-style: italic;
  font-size: var(--text-s);
  color: var(--color-muted);
  text-align: center;
  max-inline-size: 38ch;
  margin-inline: auto;
  line-height: 1.6;
}

.poem-body {
  text-align: left;
  inline-size: fit-content;
  max-inline-size: 100%;
  margin-inline: auto;
  position: relative;

  & p {
    margin-block-end: var(--space-m);
    line-height: 1.6;
    font-size: var(--text-m);
  }
}

.poem-image {
  display: block;
  margin-inline: auto;

  & img {
    max-inline-size: 100%;
    block-size: auto;
    border-radius: 2px;
    box-shadow: var(--shadow-s);
  }
}

/* -- Poem navigation -- */
.poem-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-xs);
  margin-block-start: auto;
  padding-block: var(--space-m) var(--space-s);
  border-block-start: 1px solid var(--color-border);
  font-family: var(--font-sans);
  font-size: var(--text-s);

  & .nav-prev, & .nav-next {
    color: var(--color-muted);
    text-decoration: none;
    max-inline-size: 45%;
    padding: var(--space-xs) 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    &:hover { color: var(--color-text); }
  }

  & .nav-next { text-align: end; margin-inline-start: auto; }

  & .nav-copyright {
    inline-size: 100%;
    text-align: center;
    padding-block-start: var(--space-s);

    & a { color: inherit; text-decoration: none; }
  }
}

body:has(.poem-nav) > .site-footer { display: none; }

/* -- About -- */
.about {
  --flow-space: var(--space-m);
  padding-block: var(--space-s) var(--space-xl);
}

.about-photo {
  max-inline-size: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: var(--shadow-m);
  filter: grayscale(10%) sepia(40%) brightness(1.1);
}

.about-text {
  text-align: start;
  line-height: 1.75;
  color: var(--color-text);

  & p + p { margin-block-start: var(--space-m); }
}

/* -- Share button -- */
.share-btn {
  display: none;
  margin-inline: auto;
  padding: var(--space-xs) var(--space-s);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-muted);
  cursor: pointer;
}

/* -- Footer -- */
.site-footer {
  padding: var(--space-s) var(--space-m);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-muted);

  & a { color: var(--color-muted); text-decoration: none; border-bottom: 1px solid var(--color-border); padding: var(--space-xs) 0; }
}

/* ============================================
   Exceptions
   ============================================ */
@media (max-width: 600px) {
  .breadcrumb li:not(:first-child) { display: none; }
  .breadcrumb { --cluster-justify: center; }
  .site-header { padding-block: var(--space-l); }
}

.home .breadcrumb { visibility: hidden; }

@media (hover: none) and (pointer: coarse) {
  .share-btn.supported { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  html, *, *::before, *::after {
    scroll-behavior: auto !important;
  }
}

@media print {
  .site-header, .site-footer, .poem-nav, .skip-link, .share-btn { display: none; }
  .poem-content { padding: 0; }
  .poem-body { max-inline-size: 100%; }
  .poem-body p { break-inside: avoid; }
  @page { margin: 2cm; }
}