/* Karpati es Fia Antikvarium — Website #90
   Fully offline. HTML + CSS only. */

:root {
  --parchment: #f0e5cf;
  --paper: #f8f1e4;
  --paper-light: #fbf7ef;
  --forest: #273b31;
  --forest-soft: #405748;
  --ink: #20211f;
  --burgundy: #6f3135;
  --brass: #a38752;
  --brown: #6f523a;
  --brown-soft: #9a7d63;
  --line: rgba(32, 33, 31, 0.17);
  --shadow: 0 20px 48px rgba(59, 45, 31, 0.10);
  --serif: Georgia, "Times New Roman", serif;
  --sans: Arial, Helvetica, sans-serif;
  --mono: "Courier New", Courier, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(163, 135, 82, 0.05), transparent 18rem),
    var(--paper);
  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-light);
  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, 241, 228, 0.94);
  backdrop-filter: blur(10px);
}

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

.brand {
  display: grid;
  gap: 0;
  text-decoration: none;
}

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

.brand-sub {
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.66rem;
  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 {
  color: var(--ink);
  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(--burgundy);
  border-color: currentColor;
}

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

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(360px, 0.94fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

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(2.25rem, 4.7vw, 4.15rem);
  line-height: 1.03;
}

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

p {
  margin-top: 0;
  color: #55584f;
}

.hero-text {
  max-width: 630px;
  margin-bottom: 1.8rem;
  font-size: 1.06rem;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.78rem 1.25rem;
  border: 1px solid var(--forest);
  background: var(--forest);
  color: var(--paper-light);
  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(39, 59, 49, 0.18);
}

.catalogue-note {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.8rem;
  align-items: center;
  max-width: 580px;
  color: var(--brown);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

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

.spine-display {
  position: relative;
  min-height: 510px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 8px;
  overflow: hidden;
  padding: 70px 34px 44px;
  border: 1px solid rgba(32, 33, 31, 0.16);
  background:
    linear-gradient(90deg, rgba(163,135,82,0.05) 1px, transparent 1px) 0 0 / 34px 34px,
    linear-gradient(180deg, #efe4cf, #e8d9be);
  box-shadow: var(--shadow);
}

.spine-display::after {
  content: "";
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 31px;
  height: 7px;
  background: var(--brown);
  box-shadow: 0 10px 0 rgba(111, 82, 58, 0.20);
}

.shelf-label {
  position: absolute;
  left: 26px;
  top: 24px;
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--ink);
  background: var(--paper-light);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
}

.spine {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-rows: auto 1fr auto;
  align-items: center;
  width: 58px;
  padding: 0.75rem 0.4rem;
  color: var(--paper-light);
  border: 1px solid rgba(32,33,31,0.22);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.07);
}

.spine strong {
  justify-self: center;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--serif);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.spine-code,
.spine-year {
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  text-align: center;
}

.spine-one {
  height: 310px;
  background: var(--forest);
}

.spine-two {
  height: 355px;
  background: var(--burgundy);
}

.spine-three {
  width: 70px;
  height: 392px;
  background: var(--brown);
}

.spine-four {
  height: 340px;
  background: #8e7443;
}

.spine-five {
  width: 54px;
  height: 286px;
  background: #4a4a43;
}

.ledger-lines {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent 0 95%, rgba(32,33,31,0.06) 95% 100%) 0 0 / 100% 32px;
  pointer-events: none;
}

.library-stamp {
  position: absolute;
  right: 24px;
  top: 24px;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  border: 1px solid rgba(111,49,53,0.5);
  border-radius: 50%;
  color: rgba(111,49,53,0.74);
  font-family: var(--mono);
  font-size: 0.62rem;
  line-height: 1.2;
  text-align: center;
  transform: rotate(9deg);
}

.about {
  background:
    linear-gradient(90deg, rgba(163,135,82,0.10), transparent 28%),
    var(--paper-light);
}

.about-grid {
  display: grid;
  grid-template-columns: 80px 0.9fr 1.1fr;
  gap: clamp(1.8rem, 4vw, 4rem);
  align-items: start;
}

.section-number {
  color: var(--brass);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.about-copy {
  border-top: 1px solid var(--line);
  padding-top: 1.4rem;
}

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

.section-heading {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: clamp(1.8rem, 4vw, 4rem);
  margin-bottom: 2rem;
}

.ledger-table {
  border-top: 1px solid var(--line);
}

.ledger-row {
  display: grid;
  grid-template-columns: 64px 86px 1fr auto;
  gap: 1.5rem;
  align-items: stretch;
  min-height: 150px;
  border-bottom: 1px solid var(--line);
}

.ledger-index {
  align-self: center;
  font-family: var(--mono);
  color: var(--burgundy);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
}

.ledger-spine {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 150px;
  color: var(--paper-light);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--serif);
  letter-spacing: 0.1em;
  border-left: 1px solid rgba(255,255,255,0.15);
  border-right: 1px solid rgba(32,33,31,0.15);
}

.spine-green { background: var(--forest); }
.spine-burgundy { background: var(--burgundy); }
.spine-brown { background: var(--brown); }

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

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

.ledger-ref {
  align-self: center;
  color: var(--brown-soft);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

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

.shelves-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid rgba(32,33,31,0.14);
  background:
    linear-gradient(90deg, rgba(32,33,31,0.05) 1px, transparent 1px) 0 0 / 40px 100%,
    linear-gradient(180deg, rgba(163,135,82,0.08), transparent 60%),
    #efe4cf;
}

.shelves-heading {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: clamp(1.8rem, 4vw, 4rem);
  max-width: 800px;
  margin-bottom: 3rem;
}

.shelves-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-step {
  position: relative;
  min-height: 190px;
  padding: 1.2rem;
  border: 1px solid rgba(32,33,31,0.13);
  background: rgba(248,241,228,0.74);
}

.sequence-num {
  display: block;
  margin-bottom: 2rem;
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.sequence-name {
  position: relative;
  z-index: 2;
  font-family: var(--serif);
  font-size: 1.8rem;
}

.sequence-bar {
  position: absolute;
  left: 1.2rem;
  right: 1.2rem;
  bottom: 1.15rem;
  height: 12px;
}

.bar-green { background: var(--forest); }
.bar-brass { background: var(--brass); }
.bar-burgundy { background: var(--burgundy); }
.bar-brown { background: var(--brown); }

.archive-stamp {
  position: absolute;
  right: 4%;
  top: 9%;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 160px;
  height: 160px;
  border: 2px solid rgba(111,49,53,0.18);
  border-radius: 50%;
  color: rgba(111,49,53,0.32);
  font-family: var(--mono);
  text-align: center;
  transform: rotate(-8deg);
}

.archive-stamp strong {
  font-family: var(--serif);
  font-size: 3rem;
  font-weight: 400;
}

.visit-section {
  background: #e7dac4;
}

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

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

.address-card {
  position: relative;
  display: grid;
  gap: 0.3rem;
  min-height: 285px;
  padding: 2rem;
  border: 1px solid rgba(32,33,31,0.15);
  background:
    linear-gradient(90deg, rgba(32,33,31,0.04) 1px, transparent 1px) 0 0 / 42px 100%,
    var(--paper-light);
  box-shadow: var(--shadow);
  font-style: normal;
}

.address-card::before {
  content: "";
  position: absolute;
  inset: 15px;
  border: 1px solid rgba(163,135,82,0.24);
  pointer-events: none;
}

.address-kicker {
  margin-bottom: 3.2rem;
  color: var(--burgundy);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.address-card strong {
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 400;
}

.address-rule {
  width: 100%;
  height: 1px;
  margin: 1.2rem 0 0.4rem;
  background: var(--line);
}

.address-code {
  color: var(--brown-soft);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
}

.legal-section {
  background: #e1d4bf;
}

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

.legal-card {
  padding: 2rem;
  border: 1px solid rgba(32,33,31,0.13);
  background: rgba(248,241,228,0.62);
}

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

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

.site-footer {
  padding: 2rem 0;
  background: #e1d4bf;
  border-top: 1px solid rgba(32,33,31,0.14);
}

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

.footer-address {
  display: grid;
  gap: 0.1rem;
  font-size: 0.84rem;
}

.footer-address strong {
  margin-bottom: 0.2rem;
  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,
  .visit-grid {
    grid-template-columns: 1fr;
  }

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

  .about-grid {
    grid-template-columns: 60px 1fr;
  }

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

  .ledger-row {
    grid-template-columns: 54px 70px 1fr;
  }

  .ledger-ref {
    grid-column: 3;
    padding-bottom: 1rem;
  }

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

  .archive-stamp {
    opacity: 0.45;
  }

  .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;
  }

  .catalogue-note {
    grid-template-columns: 1fr;
  }

  .note-rule {
    display: none;
  }

  .spine-display {
    min-height: 360px;
    padding: 60px 20px 40px;
    gap: 5px;
  }

  .spine {
    width: 45px;
  }

  .spine-one { height: 240px; }
  .spine-two { height: 280px; }
  .spine-three { width: 54px; height: 310px; }
  .spine-four { height: 265px; }
  .spine-five { width: 42px; height: 220px; }

  .library-stamp {
    width: 70px;
    height: 70px;
    right: 18px;
    top: 18px;
  }

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

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

  .ledger-row {
    grid-template-columns: 40px 58px 1fr;
    gap: 0.8rem;
  }

  .ledger-spine {
    min-height: 132px;
    font-size: 0.8rem;
  }

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

  .sequence-step {
    min-height: 135px;
  }

  .archive-stamp {
    right: -30px;
    top: 18px;
    transform: rotate(-8deg) scale(0.75);
  }

  .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;
  }

  .spine-display {
    min-height: 330px;
    padding-inline: 14px;
  }

  .spine strong {
    font-size: 0.74rem;
  }

  .ledger-row {
    grid-template-columns: 32px 50px 1fr;
  }

  .ledger-index {
    font-size: 0.64rem;
  }

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

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

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