/* Eikens Antikvariat Bok og Kunst — Website #93
   Books & art antiquarian × gallery-shelf modernism
   Fully offline. HTML + CSS only. */

:root {
  --offwhite: #f7f4ed;
  --paper: #fbf9f3;
  --charcoal: #2b2c2b;
  --fjord: #667783;
  --fjord-dark: #43535e;
  --rust: #9a604d;
  --pine: #3e5b4c;
  --stone: #d9d5cc;
  --stone-light: #e9e5dc;
  --line: rgba(43, 44, 43, 0.15);
  --serif: Georgia, "Times New Roman", serif;
  --sans: Arial, Helvetica, sans-serif;
  --mono: "Courier New", Courier, monospace;
  --shadow: 0 18px 46px rgba(46, 48, 46, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--charcoal);
  background:
    linear-gradient(180deg, rgba(102,119,131,0.045), transparent 18rem),
    var(--offwhite);
  font-family: var(--sans);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 999;
  padding: 0.7rem 1rem;
  background: var(--charcoal);
  color: var(--paper);
  text-decoration: none;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(1160px, calc(100% - 40px));
  margin-inline: auto;
}

.section {
  padding: 5rem 0;
  scroll-margin-top: 7rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 244, 237, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: grid;
  text-decoration: none;
  line-height: 1.05;
}

.brand-main {
  font-family: var(--serif);
  font-size: 1.25rem;
}

.brand-sub {
  margin-top: 0.18rem;
  color: var(--fjord-dark);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.main-nav,
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.15rem;
}

.main-nav a,
.footer-nav a {
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.main-nav a {
  padding: 0.45rem 0;
  border-bottom: 1px solid transparent;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--fjord-dark);
  border-color: currentColor;
}

.hero {
  padding: 4.6rem 0 5.4rem;
  scroll-margin-top: 7rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.catalogue-ref {
  margin-bottom: 1rem;
  color: var(--fjord);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
}

h1,
h2,
h3 {
  margin-top: 0;
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 720px;
  margin-bottom: 1.35rem;
  font-size: clamp(3.4rem, 7vw, 6.7rem);
  line-height: 0.97;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2.3rem, 4.8vw, 4.2rem);
  line-height: 1.03;
}

h3 {
  margin-bottom: 0.45rem;
  font-size: 1.5rem;
}

p {
  margin-top: 0;
  color: #5a5c5a;
}

.hero-text {
  max-width: 620px;
  margin-bottom: 1.8rem;
  font-size: 1.05rem;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.8rem 1.25rem;
  background: var(--charcoal);
  color: var(--paper);
  border: 1px solid var(--charcoal);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta:hover,
.cta:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(43,44,43,0.16);
}

.caption-note {
  max-width: 520px;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.caption-label {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--fjord-dark);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
}

.caption-note p {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: 0.96rem;
}

.hero-gallery {
  position: relative;
  min-height: 510px;
  overflow: hidden;
  border: 1px solid rgba(43,44,43,0.14);
  background:
    linear-gradient(180deg, rgba(102,119,131,0.05), transparent 50%),
    var(--paper);
  box-shadow: var(--shadow);
}

.gallery-frame {
  position: absolute;
  border: 1px solid rgba(43,44,43,0.14);
}

.frame-large {
  inset: 30px 34px 44px 34px;
}

.frame-small {
  width: 160px;
  height: 112px;
  right: 58px;
  top: 54px;
  border-color: rgba(154,96,77,0.26);
}

.spine-group {
  position: absolute;
  left: 54px;
  bottom: 62px;
  display: flex;
  align-items: flex-end;
  gap: 7px;
}

.spine {
  display: grid;
  grid-template-rows: auto 1fr auto;
  align-items: center;
  width: 52px;
  padding: 0.7rem 0.35rem;
  color: var(--paper);
  border: 1px solid rgba(43,44,43,0.20);
}

.spine strong {
  justify-self: center;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--serif);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.spine span,
.spine small {
  font-family: var(--mono);
  font-size: 0.54rem;
  text-align: center;
}

.spine-a {
  height: 260px;
  background: var(--fjord-dark);
}

.spine-b {
  height: 302px;
  background: var(--rust);
}

.spine-c {
  width: 64px;
  height: 338px;
  background: var(--pine);
}

.spine-d {
  height: 282px;
  background: #60615e;
}

.gallery-label {
  position: absolute;
  right: 54px;
  bottom: 64px;
  width: 220px;
  padding: 1rem;
  border: 1px solid rgba(43,44,43,0.14);
  background: var(--offwhite);
}

.gallery-label span,
.gallery-label strong,
.gallery-label small {
  display: block;
}

.label-kicker {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
}

.gallery-label strong {
  margin-top: 0.25rem;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 400;
}

.gallery-label > span:nth-of-type(2) {
  color: var(--fjord-dark);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.label-rule {
  height: 1px;
  margin: 0.8rem 0 0.55rem;
  background: var(--line);
}

.gallery-label small {
  color: #767873;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.about-section {
  background:
    linear-gradient(90deg, rgba(102,119,131,0.08), transparent 32%),
    #faf8f3;
}

.about-grid {
  display: grid;
  grid-template-columns: 70px 0.9fr 1.1fr;
  gap: clamp(1.8rem, 4vw, 4rem);
  align-items: start;
}

.section-index {
  color: var(--fjord);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.about-copy {
  padding-top: 1.35rem;
  border-top: 1px solid var(--line);
}

.about-copy p {
  font-size: 1.03rem;
}

.section-heading {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: clamp(1.8rem, 4vw, 4rem);
  margin-bottom: 2rem;
}

.gallery-rows {
  border-top: 1px solid var(--line);
}

.gallery-row {
  display: grid;
  grid-template-columns: 58px 84px 1fr auto;
  gap: 1.4rem;
  align-items: stretch;
  min-height: 150px;
  border-bottom: 1px solid var(--line);
}

.row-number {
  align-self: center;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.shelf-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--paper);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--serif);
  letter-spacing: 0.1em;
}

.bar-books {
  background: var(--fjord-dark);
}

.bar-art {
  background: var(--rust);
}

.bar-print {
  background: var(--pine);
}

.row-copy {
  align-self: center;
  padding: 1.4rem 0;
}

.row-copy p {
  margin-bottom: 0;
}

.row-caption {
  align-self: center;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  color: var(--fjord);
  font-family: var(--mono);
  font-size: 0.62rem;
  white-space: nowrap;
}

.collection-section {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.collection-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid rgba(43,44,43,0.14);
  background:
    linear-gradient(90deg, rgba(43,44,43,0.035) 1px, transparent 1px) 0 0 / 38px 100%,
    linear-gradient(180deg, rgba(102,119,131,0.08), transparent 70%),
    #ece9e1;
}

.collection-heading {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: clamp(1.8rem, 4vw, 4rem);
  max-width: 820px;
  margin-bottom: 3rem;
}

.collection-heading p:last-child {
  max-width: 650px;
}

.sequence-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.sequence-card {
  position: relative;
  min-height: 185px;
  padding: 1.2rem;
  border: 1px solid rgba(43,44,43,0.13);
  background: rgba(251,249,243,0.78);
}

.sequence-num {
  display: block;
  margin-bottom: 2rem;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.sequence-name {
  display: block;
  font-family: var(--serif);
  font-size: 1.75rem;
}

.sequence-frame {
  position: absolute;
  left: 1.2rem;
  right: 1.2rem;
  bottom: 2.8rem;
  height: 28px;
  border: 1px solid var(--line);
}

.sequence-card small {
  position: absolute;
  left: 1.2rem;
  bottom: 1rem;
  color: var(--fjord);
  font-family: var(--mono);
  font-size: 0.6rem;
}

.vertical-spines {
  position: absolute;
  right: 4%;
  top: 10%;
  display: flex;
  align-items: flex-end;
  gap: 5px;
  opacity: 0.24;
}

.v-spine {
  display: block;
  width: 16px;
}

.vs1 { height: 130px; background: var(--fjord-dark); }
.vs2 { height: 165px; background: var(--rust); }
.vs3 { height: 145px; background: var(--pine); }
.vs4 { height: 118px; background: var(--charcoal); }

.closing-section {
  background: #f0eee8;
}

.closing-grid {
  display: grid;
  grid-template-columns: 1fr minmax(320px, 0.8fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
}

.closing-name {
  max-width: 720px;
}

.closing-mark {
  position: relative;
  min-height: 260px;
  border: 1px solid rgba(43,44,43,0.14);
  background: var(--paper);
}

.closing-frame {
  position: absolute;
  inset: 22px;
  border: 1px solid rgba(43,44,43,0.12);
}

.closing-shelf {
  position: absolute;
  left: 42px;
  right: 42px;
  bottom: 58px;
  height: 7px;
  background: var(--fjord-dark);
  box-shadow:
    34px -58px 0 0 var(--rust),
    68px -82px 0 0 var(--pine),
    102px -68px 0 0 var(--charcoal);
}

.closing-label {
  position: absolute;
  right: 36px;
  top: 36px;
  width: 180px;
  padding: 0.9rem;
  border: 1px solid var(--line);
  background: var(--offwhite);
}

.closing-label span,
.closing-label strong,
.closing-label small {
  display: block;
}

.closing-label span,
.closing-label small {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.closing-label strong {
  margin: 0.25rem 0;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 400;
}

.legal-section {
  background: #e6e2d9;
}

.legal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.legal-card {
  padding: 2rem;
  border: 1px solid rgba(43,44,43,0.12);
  background: rgba(251,249,243,0.62);
}

.legal-card h2 {
  font-size: clamp(2rem, 3.4vw, 3rem);
}

.legal-card p:last-child {
  margin-bottom: 0;
}

.site-footer {
  padding: 2rem 0;
  background: #e6e2d9;
  border-top: 1px solid rgba(43,44,43,0.12);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
}

.footer-brand strong {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 400;
}

@media (max-width: 960px) {
  .header-inner {
    min-height: auto;
    padding: 1rem 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.7rem;
  }

  .hero-grid,
  .closing-grid {
    grid-template-columns: 1fr;
  }

  .hero-gallery {
    min-height: 430px;
  }

  .about-grid {
    grid-template-columns: 56px 1fr;
  }

  .about-copy {
    grid-column: 2;
  }

  .gallery-row {
    grid-template-columns: 48px 72px 1fr;
  }

  .row-caption {
    grid-column: 3;
    justify-self: start;
    margin-bottom: 1rem;
  }

  .sequence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .legal-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .shell {
    width: min(100% - 28px, 1160px);
  }

  .section {
    padding: 4rem 0;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.8rem);
  }

  h2 {
    font-size: clamp(2.1rem, 10vw, 3.1rem);
  }

  .hero {
    padding-top: 3rem;
  }

  .hero-gallery {
    min-height: 360px;
  }

  .spine-group {
    left: 26px;
    bottom: 44px;
  }

  .spine {
    width: 40px;
  }

  .spine-a { height: 200px; }
  .spine-b { height: 238px; }
  .spine-c { width: 50px; height: 270px; }
  .spine-d { height: 220px; }

  .gallery-label {
    right: 24px;
    bottom: 40px;
    width: 175px;
  }

  .about-grid,
  .section-heading,
  .collection-heading {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .about-copy {
    grid-column: auto;
  }

  .gallery-row {
    grid-template-columns: 40px 60px 1fr;
    gap: 0.8rem;
  }

  .row-copy {
    padding: 1rem 0;
  }

  .sequence-grid {
    grid-template-columns: 1fr;
  }

  .sequence-card {
    min-height: 140px;
  }

  .vertical-spines {
    right: -20px;
    top: 20px;
    transform: scale(0.8);
  }

  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .main-nav {
    display: grid;
    grid-template-columns: repeat(3, auto);
    justify-content: start;
    gap: 0.55rem 1rem;
  }

  .main-nav a {
    font-size: 0.74rem;
  }

  .hero-gallery {
    min-height: 330px;
  }

  .gallery-label {
    max-width: 62%;
    padding: 0.75rem;
  }

  .gallery-row {
    grid-template-columns: 30px 50px 1fr;
  }

  .shelf-bar {
    font-size: 0.74rem;
  }

  .legal-card,
  .collection-panel {
    padding: 1.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}