/* Hereditas Antikvarium — Website #127
   European Antiquarian Bookshop × Heritage Archive × Editorial Minimalism
   Fully offline. HTML + CSS only. */

:root{
  --parchment:#efe4d2;
  --ivory:#f8f1e5;
  --paper:#fcf8f0;
  --burgundy:#6d3743;
  --forest:#405448;
  --walnut:#6d513d;
  --char:#292a28;
  --brass:#b19763;
  --stone:#9e9b93;
  --line:rgba(41,42,40,.14);
  --serif:Georgia,"Times New Roman",serif;
  --sans:Arial,Helvetica,sans-serif;
  --mono:"Courier New",Courier,monospace;
  --shadow:0 18px 44px rgba(45,37,30,.10)
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--char);
  background:
    linear-gradient(rgba(109,55,67,.018) 1px,transparent 1px) 0 0/28px 28px,
    linear-gradient(90deg,rgba(109,81,61,.018) 1px,transparent 1px) 0 0/28px 28px,
    var(--parchment);
  font-family:var(--sans);line-height:1.6;overflow-x:hidden
}
a{color:inherit}
.shell{width:min(1160px,calc(100% - 40px));margin-inline:auto}
.section{padding:4.8rem 0;scroll-margin-top:7rem}
.skip-link{position:fixed;left:1rem;top:1rem;z-index:999;padding:.7rem 1rem;background:var(--char);color:#fff;text-decoration:none;transform:translateY(-160%)}
.skip-link:focus{transform:none}

.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);background:rgba(239,228,210,.95);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}
.brand-main{font-family:var(--serif);font-size:1.18rem;font-weight:400;letter-spacing:.018em}
.brand-sub{margin-top:.25rem;color:var(--burgundy);font-family:var(--mono);font-size:.61rem;letter-spacing:.1em}
.main-nav,.footer-nav{display:flex;flex-wrap:wrap;gap:1rem}
.main-nav a,.footer-nav a{text-decoration:none;font-size:.76rem;letter-spacing:.04em}
.main-nav a{padding:.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:4.7rem 0 5.2rem}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(400px,.95fr);gap:clamp(3rem,7vw,7rem);align-items:center}
.eyebrow{margin:0 0 .8rem;color:var(--burgundy);font-family:var(--mono);font-size:.69rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase}
.archive-ref{display:grid;grid-template-columns:auto 1fr auto;gap:.75rem;align-items:center;max-width:610px;margin-bottom:1rem;color:var(--stone);font-family:var(--mono);font-size:.63rem;letter-spacing:.08em}
.archive-rule{height:1px;background:var(--line)}

h1,h2,h3{margin-top:0}
h1,h2{font-family:var(--serif);font-weight:400;letter-spacing:-.035em}
h1{max-width:850px;margin-bottom:1.3rem;font-size:clamp(3.75rem,7.4vw,6.9rem);line-height:.96}
h2{margin-bottom:1rem;font-size:clamp(2.35rem,4.8vw,4.05rem);line-height:1}
h3{margin-bottom:.45rem;font-family:var(--serif);font-size:1.35rem;font-weight:400}
p{margin-top:0;color:#625c55}
.hero-text{max-width:640px;margin-bottom:1.8rem;font-size:1.04rem}

.cta{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:.82rem 1.3rem;border:1px solid var(--char);background:var(--char);color:#fff;text-decoration:none;font-size:.78rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;transition:transform .2s ease,box-shadow .2s ease}
.cta:hover,.cta:focus-visible{transform:translateY(-2px);box-shadow:0 12px 28px rgba(41,42,40,.18)}

.hero-note{display:grid;grid-template-columns:46px 1fr;gap:.9rem;max-width:570px;margin-top:2rem}
.hero-note p{margin-bottom:0;font-family:var(--mono);font-size:.74rem}
.stamp-glyph{position:relative;width:42px;height:42px;border:2px solid var(--burgundy);border-radius:50%}
.stamp-glyph::before{content:"HA";position:absolute;inset:6px;display:grid;place-items:center;border:1px solid var(--brass);border-radius:50%;font-family:var(--mono);font-size:.55rem;color:var(--forest)}

.hero-visual{position:relative;min-height:545px;overflow:hidden;border:1px solid var(--line);background:linear-gradient(145deg,rgba(177,151,99,.08),transparent 58%),var(--paper);box-shadow:var(--shadow)}
.paper-pattern{position:absolute;inset:0;background:linear-gradient(rgba(41,42,40,.026) 1px,transparent 1px) 0 0/46px 46px,linear-gradient(90deg,rgba(41,42,40,.026) 1px,transparent 1px) 0 0/46px 46px}

.archive-card{position:absolute;left:30px;top:30px;width:290px;padding:1rem;border:1px solid var(--char);background:rgba(248,241,229,.96);box-shadow:10px 10px 0 rgba(109,81,61,.08)}
.archive-card span,.archive-card strong,.archive-card small{display:block}
.archive-card span,.archive-card small{font-family:var(--mono);font-size:.57rem;letter-spacing:.08em}
.archive-card span{color:var(--burgundy)}
.archive-card strong{margin:.3rem 0;font-family:var(--serif);font-size:1.06rem;font-weight:400}
.archive-card small{color:var(--forest)}
.archive-card-rule{height:1px;margin-top:.9rem;background:var(--line)}

.book-stack{position:absolute;display:flex;align-items:flex-end;gap:7px}
.book-stack i{display:block;border:1px solid var(--char);box-shadow:3px 0 0 rgba(41,42,40,.05)}
.stack-a{right:42px;top:50px}
.stack-a i:nth-child(1){width:28px;height:168px;background:var(--burgundy)}
.stack-a i:nth-child(2){width:24px;height:142px;background:var(--forest)}
.stack-a i:nth-child(3){width:30px;height:185px;background:var(--walnut)}
.stack-a i:nth-child(4){width:25px;height:152px;background:var(--brass)}
.stack-a i:nth-child(5){width:26px;height:176px;background:var(--char)}
.stack-b{left:42%;bottom:62px;gap:6px}
.stack-b i:nth-child(1){width:30px;height:105px;background:var(--forest)}
.stack-b i:nth-child(2){width:22px;height:128px;background:var(--burgundy)}
.stack-b i:nth-child(3){width:28px;height:114px;background:var(--stone)}

.frame-box{position:absolute;border:4px solid}
.frame-a{left:44%;top:238px;width:132px;height:154px;border-color:var(--burgundy)}
.frame-b{right:54px;bottom:60px;width:102px;height:126px;border-color:var(--brass)}

.catalogue-mark{position:absolute;left:42px;bottom:56px;width:102px;height:102px;display:grid;place-items:center;border:1px solid var(--char);background:var(--ivory);text-align:center}
.catalogue-mark span{font-family:var(--mono);font-size:.54rem;color:var(--burgundy)}
.catalogue-mark strong{font-family:var(--serif);font-size:1.75rem;font-weight:400}
.quote-mark{position:absolute;right:178px;bottom:16px;font-family:var(--serif);font-size:7rem;line-height:1;color:rgba(109,55,67,.12)}
.brass-line{position:absolute;height:2px;background:var(--brass)}
.bl-a{left:162px;bottom:82px;width:120px}
.bl-b{right:48px;top:252px;width:142px}
.corner-ref{position:absolute;left:30px;bottom:18px;color:var(--stone);font-family:var(--mono);font-size:.55rem}

.section-heading{display:grid;grid-template-columns:70px 1fr;gap:clamp(1.8rem,4vw,4rem);margin-bottom:2rem}
.section-index{color:var(--stone);font-family:var(--mono);font-size:.72rem;letter-spacing:.12em}

.collection-section{background:linear-gradient(90deg,rgba(109,55,67,.045),transparent 34%),var(--ivory)}
.collection-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.collection-card{position:relative;min-height:220px;padding:1.35rem 1.2rem 1.2rem 2rem;border:1px solid var(--line);background:var(--paper)}
.collection-card::before{content:"";position:absolute;left:.8rem;top:1.1rem;bottom:1.1rem;width:1px;background:var(--line)}
.card-code{display:block;margin-bottom:2.2rem;color:var(--stone);font-family:var(--mono);font-size:.58rem;letter-spacing:.08em}
.spine-band{position:absolute;left:0;top:0;bottom:0;width:9px}
.spine-band.burgundy{background:var(--burgundy)}
.spine-band.forest{background:var(--forest)}
.spine-band.walnut{background:var(--walnut)}
.spine-band.brass{background:var(--brass)}
.spine-band.charcoal{background:var(--char)}
.spine-band.stone{background:var(--stone)}
.collection-card p{margin-bottom:0}

.heritage-section{background:#ece3d4}
.heritage-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(3rem,7vw,7rem);align-items:start}
.heritage-intro{position:sticky;top:110px}
.heritage-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.heritage-card{min-height:210px;padding:1.4rem;border:1px solid var(--line);background:rgba(252,248,240,.72)}
.heritage-card span{display:block;margin-bottom:2.6rem;color:var(--burgundy);font-family:var(--mono);font-size:.58rem}
.heritage-card:nth-child(2){border-top:5px solid var(--forest)}
.heritage-card:nth-child(3){border-top:5px solid var(--brass)}
.heritage-card:nth-child(4){border-top:5px solid var(--burgundy)}

.about-section{background:var(--paper)}
.about-grid{display:grid;grid-template-columns:70px .9fr 1.1fr;gap:clamp(1.8rem,4vw,4rem);align-items:start}
.about-copy{padding-top:1.35rem;border-top:1px solid var(--line)}
.about-copy p{font-size:1.02rem}

.discover-section{background:linear-gradient(180deg,var(--ivory),#eee6d8)}
.discover-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem}
.discover-card{position:relative;min-height:230px;padding:1.35rem;border:1px solid var(--line);background:var(--paper)}
.discover-card::after{content:"";position:absolute;left:1.35rem;right:1.35rem;bottom:1.1rem;height:2px;background:var(--brass)}
.discover-card span{display:block;margin-bottom:2.5rem;color:var(--stone);font-family:var(--mono);font-size:.58rem}

.feature-section{background:#e6dccd}
.feature-grid{display:grid;grid-template-columns:1fr minmax(360px,.85fr);gap:clamp(3rem,7vw,7rem);align-items:center}
.feature-art{position:relative;min-height:300px;overflow:hidden;border:1px solid var(--line);background:var(--paper)}
.feature-panel{position:absolute;left:26px;top:26px;width:245px;padding:1rem;border:1px solid var(--char);background:rgba(248,241,229,.96)}
.feature-panel span,.feature-panel strong,.feature-panel small{display:block}
.feature-panel span,.feature-panel small{font-family:var(--mono);font-size:.57rem;letter-spacing:.08em}
.feature-panel span{color:var(--burgundy)}
.feature-panel strong{margin:.25rem 0;font-family:var(--serif);font-size:1.1rem;font-weight:400}
.feature-books{position:absolute;right:36px;top:34px;display:flex;align-items:flex-end;gap:6px}
.feature-books i{display:block;width:22px;border:1px solid var(--char)}
.feature-books i:nth-child(1){height:120px;background:var(--burgundy)}
.feature-books i:nth-child(2){height:96px;background:var(--forest)}
.feature-books i:nth-child(3){height:132px;background:var(--brass)}
.feature-books i:nth-child(4){height:108px;background:var(--walnut)}
.feature-stamp{position:absolute;right:40px;bottom:34px;width:82px;height:82px;border:2px solid var(--burgundy);border-radius:50%;display:grid;place-items:center;text-align:center;transform:rotate(7deg)}
.feature-stamp span{font-family:var(--mono);font-size:.52rem;color:var(--forest)}
.feature-stamp strong{font-family:var(--serif);font-size:1.35rem;font-weight:400}
.feature-line{position:absolute;left:38px;height:2px}
.f-a{bottom:40px;width:42%;background:var(--burgundy)}
.f-b{bottom:62px;width:28%;background:var(--brass)}

.legal-section{background:#dcd3c5}
.legal-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
.legal-card{padding:2rem;border:1px solid var(--line);background:rgba(252,248,240,.72)}
.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 var(--line);background:#dcd3c5}
.footer-grid{display:flex;justify-content:space-between;align-items:flex-end;gap:2rem}
.footer-brand{display:grid;gap:.15rem}
.footer-brand strong{font-family:var(--serif);font-size:1rem;font-weight:400}
.footer-brand span{color:var(--burgundy);font-family:var(--mono);font-size:.6rem}

@media(max-width:1040px){
  .main-nav{gap:.8rem}
  .main-nav a{font-size:.72rem}
  .discover-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:980px){
  .header-inner{min-height:auto;padding:1rem 0;align-items:flex-start;flex-direction:column;gap:.7rem}
  .hero-grid,.feature-grid,.heritage-grid{grid-template-columns:1fr}
  .hero-visual{min-height:460px}
  .heritage-intro{position:static}
  .about-grid{grid-template-columns:56px 1fr}
  .about-copy{grid-column:2}
  .collection-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(3.15rem,15vw,4.9rem)}
  h2{font-size:clamp(2.15rem,10vw,3rem)}
  .hero{padding-top:3rem}
  .archive-ref{grid-template-columns:1fr}
  .archive-rule{display:none}
  .hero-visual{min-height:410px}
  .archive-card{left:20px;top:20px;width:220px}
  .stack-a{right:20px;top:34px;transform:scale(.78);transform-origin:top right}
  .frame-a{left:48%;top:202px;width:96px;height:116px}
  .stack-b{left:48%;bottom:44px;transform:scale(.78)}
  .catalogue-mark{left:20px;bottom:54px;width:76px;height:76px}
  .collection-grid,.heritage-cards,.discover-grid{grid-template-columns:1fr}
  .about-grid,.section-heading{grid-template-columns:1fr;gap:.8rem}
  .about-copy{grid-column:auto}
  .feature-art{min-height:270px}
  .footer-grid{flex-direction:column;align-items:flex-start}
}
@media(max-width:480px){
  .main-nav{display:grid;grid-template-columns:repeat(2,auto);justify-content:start;gap:.5rem 1rem}
  .hero-visual{min-height:365px}
  .archive-card{max-width:68%;padding:.8rem}
  .stack-a{right:4px;transform:scale(.65);transform-origin:top right}
  .frame-b,.quote-mark{display:none}
  .bl-b{opacity:.45}
  .feature-panel{left:18px;top:18px;max-width:68%}
  .feature-books{right:18px;transform:scale(.82);transform-origin:top right}
  .legal-card{padding:1.35rem}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important}
}