/* Aukcio.net Mike es tsa Antikvarium
   European Antiquarium × Auction Catalogue × Heritage Editorial
   Fully offline. HTML + CSS only. */

:root {
  --parchment: #efe3cc;
  --ivory: #f8f3e8;
  --paper: #fbf7ef;
  --burgundy: #6f2f3b;
  --forest: #2f4a3c;
  --charcoal: #2d2d2a;
  --walnut: #6b4a35;
  --brass: #a68a53;
  --gold-soft: #c8ad74;
  --line: rgba(45, 45, 42, 0.15);
  --serif: Georgia, "Times New Roman", serif;
  --sans: Arial, Helvetica, sans-serif;
  --mono: "Courier New", Courier, monospace;
  --shadow: 0 18px 48px rgba(74, 54, 36, 0.10);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--charcoal);
  background:
    linear-gradient(180deg, rgba(166,138,83,0.05), transparent 20rem),
    var(--ivory);
  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(--forest);
  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;
  border-bottom: 1px solid var(--line);
  background: rgba(248,243,232,0.95);
  backdrop-filter: blur(10px);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

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

.brand-main {
  font-family: var(--serif);
  font-size: 1.28rem;
}

.brand-sub {
  margin-top: 0.18rem;
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.main-nav,
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
}

.main-nav a,
.footer-nav a {
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.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(--burgundy);
  border-color: currentColor;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

.hero-ref {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: center;
  max-width: 560px;
  margin-bottom: 1rem;
  color: var(--brass);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.09em;
}

.hero-rule {
  height: 1px;
  background: var(--line);
}

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

h1 {
  max-width: 760px;
  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, 4.15rem);
  line-height: 1.03;
}

h3 {
  margin-bottom: 0.45rem;
  font-size: 1.45rem;
}

p {
  margin-top: 0;
  color: #57584f;
}

.hero-text {
  max-width: 640px;
  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;
  border: 1px solid var(--forest);
  background: var(--forest);
  color: var(--paper);
  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(47,74,60,0.18);
}

.hero-note {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 0.9rem;
  max-width: 540px;
  margin-top: 2rem;
}

.ornament {
  position: relative;
  width: 30px;
  height: 42px;
}

.ornament::before,
.ornament::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 1px;
  background: var(--brass);
}

.ornament::before {
  top: 0;
  height: 42px;
}

.ornament::after {
  top: 10px;
  left: 5px;
  width: 20px;
  height: 20px;
  border: 1px solid var(--brass);
  border-radius: 50%;
  background: transparent;
}

.hero-note p {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: 0.95rem;
}

.hero-display {
  position: relative;
  min-height: 520px;
}

.paper-layer {
  position: absolute;
  border: 1px solid rgba(45,45,42,0.14);
  box-shadow: var(--shadow);
}

.layer-back {
  inset: 38px 0 0 54px;
  background: var(--parchment);
  transform: rotate(2.2deg);
}

.layer-front {
  inset: 0 30px 28px 0;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(166,138,83,0.06), transparent 58%),
    var(--paper);
}

.layer-front::before {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(111,47,59,0.14);
}

.catalogue-card {
  position: absolute;
  left: 42px;
  top: 42px;
  width: 230px;
  padding: 1rem;
  border: 1px solid var(--charcoal);
  background: var(--ivory);
}

.catalogue-card span,
.catalogue-card strong,
.catalogue-card small {
  display: block;
}

.card-kicker {
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
}

.catalogue-card strong {
  margin: 0.25rem 0;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 400;
}

.catalogue-card > span:nth-of-type(2) {
  color: var(--forest);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.card-rule {
  height: 1px;
  margin: 0.75rem 0 0.55rem;
  background: var(--line);
}

.catalogue-card small {
  color: #78776f;
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.06em;
}

.book-stack {
  position: absolute;
  left: 54px;
  bottom: 56px;
  width: 250px;
}

.book {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  height: 50px;
  padding: 0 1rem;
  color: var(--paper);
  border: 1px solid rgba(45,45,42,0.18);
}

.book span {
  font-family: var(--mono);
  font-size: 0.6rem;
}

.book strong {
  font-family: var(--serif);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.book-one {
  width: 100%;
  background: var(--forest);
}

.book-two {
  width: 88%;
  margin-left: 20px;
  background: var(--burgundy);
}

.book-three {
  width: 76%;
  margin-left: 40px;
  background: var(--walnut);
}

.stamp-mark {
  position: absolute;
  right: 44px;
  top: 56px;
  display: grid;
  place-items: center;
  width: 108px;
  height: 108px;
  border: 2px solid rgba(166,138,83,0.52);
  border-radius: 50%;
  color: rgba(111,47,59,0.66);
  font-family: var(--mono);
  font-size: 0.58rem;
  text-align: center;
  transform: rotate(-8deg);
}

.stamp-mark strong {
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 400;
}

.lot-grid {
  position: absolute;
  right: 38px;
  bottom: 46px;
  display: grid;
  grid-template-columns: repeat(2, 74px);
  gap: 8px;
}

.lot-grid span {
  padding: 0.65rem 0.4rem;
  border: 1px solid var(--line);
  background: rgba(248,243,232,0.72);
  color: var(--brass);
  font-family: var(--mono);
  font-size: 0.58rem;
  text-align: center;
}

.section-heading {
  max-width: 800px;
  margin-bottom: 2.2rem;
}

.section-heading > p:last-child {
  max-width: 680px;
}

.collection-section {
  background:
    linear-gradient(90deg, rgba(47,74,60,0.045), transparent 32%),
    #faf6ee;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.collection-card {
  position: relative;
  min-height: 235px;
  padding: 1.5rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(251,247,239,0.64);
}

.lot-no {
  display: block;
  margin-bottom: 3.4rem;
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}

.card-ref {
  position: absolute;
  left: 1.5rem;
  bottom: 1rem;
  color: var(--brass);
  font-family: var(--mono);
  font-size: 0.58rem;
}

.antiquarium-grid {
  display: grid;
  grid-template-columns: 1fr minmax(360px, 0.85fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
}

.antiquarium-copy {
  max-width: 700px;
}

.spine-shelf {
  position: relative;
  min-height: 340px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 8px;
  padding: 52px 34px 58px;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(45,45,42,0.03) 1px, transparent 1px) 0 0 / 34px 100%,
    var(--parchment);
}

.vertical-book {
  display: grid;
  grid-template-rows: auto 1fr;
  align-items: center;
  width: 52px;
  padding: 0.7rem 0.35rem;
  color: var(--paper);
}

.vertical-book span {
  font-family: var(--mono);
  font-size: 0.56rem;
  text-align: center;
}

.vertical-book strong {
  justify-self: center;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--serif);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.vb1 { height: 220px; background: var(--forest); }
.vb2 { height: 250px; background: var(--burgundy); }
.vb3 { height: 200px; background: var(--walnut); }
.vb4 { height: 270px; background: #56554f; }

.shelf-line {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 46px;
  height: 8px;
  background: var(--walnut);
  box-shadow: 0 8px 0 rgba(107,74,53,0.18);
}

.shelf-tag {
  position: absolute;
  left: 26px;
  top: 24px;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--charcoal);
  background: var(--ivory);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.auction-section {
  background: #eee2ce;
}

.auction-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.auction-card {
  min-height: 220px;
  padding: 1.4rem;
  border: 1px solid rgba(45,45,42,0.13);
  background: rgba(251,247,239,0.70);
}

.auction-index {
  display: block;
  margin-bottom: 2.7rem;
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.64rem;
}

.about-section {
  background: #faf6ee;
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(3rem, 6vw, 6rem);
}

.discover-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.discover-grid article {
  min-height: 190px;
  padding: 1.3rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.discover-grid article > span {
  display: block;
  margin-bottom: 2rem;
  color: var(--brass);
  font-family: var(--mono);
  font-size: 0.64rem;
}

.feature-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
  min-height: 360px;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(166,138,83,0.08), transparent 60%),
    var(--paper);
}

.feature-copy {
  max-width: 690px;
}

.feature-visual {
  position: relative;
  min-height: 240px;
}

.feature-frame {
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(111,47,59,0.18);
}

.feature-book {
  position: absolute;
  bottom: 38px;
  width: 44px;
  border: 1px solid rgba(45,45,42,0.12);
}

.fb1 {
  left: 24%;
  height: 150px;
  background: var(--forest);
}

.fb2 {
  left: 42%;
  height: 188px;
  background: var(--burgundy);
}

.fb3 {
  left: 60%;
  height: 168px;
  background: var(--walnut);
}

.feature-label {
  position: absolute;
  right: 20px;
  top: 20px;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  background: var(--ivory);
  color: var(--brass);
  font-family: var(--mono);
  font-size: 0.6rem;
}

.legal-section {
  background: #e6dac6;
}

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

.legal-card {
  padding: 2rem;
  border: 1px solid rgba(45,45,42,0.12);
  background: rgba(251,247,239,0.62);
}

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

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

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid rgba(45,45,42,0.12);
  background: #e6dac6;
}

.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: 1000px) {
  .header-inner {
    min-height: auto;
    padding: 1rem 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.7rem;
  }

  .hero-grid,
  .antiquarium-grid,
  .feature-panel {
    grid-template-columns: 1fr;
  }

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

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

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

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

  .hero-rule {
    display: none;
  }

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

  .layer-back {
    inset: 22px 0 0 34px;
  }

  .layer-front {
    inset: 0 20px 18px 0;
  }

  .catalogue-card {
    left: 24px;
    top: 26px;
    width: 190px;
  }

  .stamp-mark {
    right: 24px;
    top: 34px;
    width: 86px;
    height: 86px;
  }

  .book-stack {
    left: 28px;
    bottom: 40px;
    width: 205px;
  }

  .lot-grid {
    right: 22px;
    bottom: 36px;
    grid-template-columns: repeat(2, 62px);
  }

  .collection-grid,
  .auction-grid,
  .discover-grid {
    grid-template-columns: 1fr;
  }

  .collection-card,
  .auction-card,
  .discover-grid article {
    min-height: auto;
  }

  .lot-no {
    margin-bottom: 1.8rem;
  }

  .spine-shelf {
    min-height: 300px;
  }

  .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: 0.72rem;
  }

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

  .catalogue-card {
    max-width: 58%;
  }

  .stamp-mark {
    opacity: 0.5;
  }

  .lot-grid {
    display: none;
  }

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

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

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