/* İstanbul Antika Alım — ortak stil dosyası */
:root{
  --ink:#16221D;--ink-2:#22332C;--ink-3:#2E443A;
  --brass:#CDB078;--brass-d:#A88B52;
  --paper:#F5F0E6;--paper-2:#EDE5D5;--line:#D9CDB4;
  --text:#2A2723;--muted:#6B645A;--on-ink:#E9E2D3;--on-ink-m:#A9B3AC;
  --serif:"Cormorant Garamond",Georgia,serif;--sans:"Jost",system-ui,sans-serif;
  --w:1160px;--r:2px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font:400 17px/1.65 var(--sans)}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0 0 .5em;color:var(--ink)}
h1{font-size:clamp(2.2rem,5vw,3.6rem)}
h2{font-size:clamp(1.8rem,3.4vw,2.5rem)}
h3{font-size:1.4rem}
p{margin:0 0 1em}
.wrap{max-width:var(--w);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:var(--brass);color:var(--ink);padding:8px 14px;z-index:99}
.skip:focus{left:10px}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px}

/* Butonlar */
.btn{display:inline-flex;align-items:center;gap:.55em;padding:.8em 1.35em;border:1px solid transparent;border-radius:var(--r);font:500 .95rem/1 var(--sans);letter-spacing:.02em;text-decoration:none;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn svg{width:18px;height:18px;flex:none}
.btn-brass{background:var(--brass);color:var(--ink)}
.btn-brass:hover{background:#DCC390}
.btn-line{border-color:currentColor;color:var(--on-ink)}
.btn-line:hover{background:rgba(205,176,120,.12);color:var(--brass)}
.btn-dark{background:var(--ink);color:var(--on-ink)}
.btn-dark:hover{background:var(--ink-3)}
.link-more{display:inline-flex;align-items:center;gap:.4em;font-weight:500;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--brass-d);padding-bottom:2px}
.link-more:hover{color:var(--brass-d)}

/* Üst bilgi */
.site-header{background:var(--ink);color:var(--on-ink);position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(205,176,120,.25)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{width:42px;height:42px}
.brand-name{display:block;font:600 1.3rem/1.1 var(--serif);color:#F1EADB}
.brand-sub{display:block;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--brass)}
.nav{display:flex;align-items:center;gap:26px}
.nav a:not(.btn){text-decoration:none;font-size:.93rem;color:var(--on-ink);padding:6px 0;border-bottom:1px solid transparent}
.nav a:not(.btn):hover,.nav a[aria-current="page"]{color:var(--brass);border-bottom-color:var(--brass)}
.nav-toggle{display:none;background:none;border:1px solid rgba(205,176,120,.5);color:var(--on-ink);font:500 .9rem var(--sans);padding:8px 14px;border-radius:var(--r);cursor:pointer}

/* Anasayfa hero */
.hero{background:var(--ink);color:var(--on-ink);padding:40px 0 64px}
.hero-frame{position:relative;border:1px solid rgba(205,176,120,.35);padding:clamp(28px,5vw,64px)}
.corner{position:absolute;width:26px;height:26px;color:var(--brass)}
.corner.tl{top:-1px;left:-1px}.corner.tr{top:-1px;right:-1px;transform:scaleX(-1)}
.corner.bl{bottom:-1px;left:-1px;transform:scaleY(-1)}.corner.br{bottom:-1px;right:-1px;transform:scale(-1)}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.hero h1{color:#F4EDDD}
.hero-lead{font-size:1.15rem;color:var(--on-ink-m);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 34px}
.assurances{list-style:none;margin:0;padding:24px 0 0;border-top:1px solid rgba(205,176,120,.25);display:grid;grid-template-columns:repeat(3,1fr);gap:20px;font-size:.9rem;color:var(--on-ink-m)}
.assurances strong{display:block;font:600 1.15rem var(--serif);color:var(--brass);margin-bottom:2px}
.seal{color:var(--brass);width:100%;max-width:340px;justify-self:center}
.seal text{fill:currentColor;font-family:var(--sans);letter-spacing:.2em}

/* Alt sayfa başlığı */
.page-hero{background:var(--ink);color:var(--on-ink);padding:42px 0 52px;border-bottom:3px double rgba(205,176,120,.4)}
.page-hero h1{color:#F4EDDD;margin-top:10px;font-size:clamp(2rem,4.4vw,3.1rem)}
.page-hero p{color:var(--on-ink-m);font-size:1.1rem;max-width:40em;margin:0}
.crumbs{font-size:.82rem;letter-spacing:.04em;color:var(--on-ink-m)}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"›";margin-right:6px;color:var(--brass)}
.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--brass)}

/* Bölümler */
.section{padding:clamp(56px,8vw,96px) 0}
.section.alt{background:var(--paper-2)}
.section-head{max-width:640px;margin-bottom:40px}
.section-head p{color:var(--muted)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:block;font-size:.75rem;letter-spacing:.2em;text-transform:uppercase;color:var(--brass-d);margin-bottom:10px}
.section-foot{margin-top:36px}

/* Eser kartları */
.catalogue{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.catalogue-item{background:var(--paper);padding:26px 24px;display:flex;flex-direction:column;text-decoration:none;transition:background .2s}
a.catalogue-item:hover{background:#FBF8F1}
a.catalogue-item:hover h3{color:var(--brass-d)}
.catalogue-item h3{margin-bottom:.3em;transition:color .2s}
.catalogue-item p{color:var(--muted);font-size:.93rem;margin:0}
.catalogue-item .arrow{margin-top:auto;padding-top:14px;font-size:.85rem;color:var(--brass-d)}
.catalogue.compact{grid-template-columns:repeat(4,1fr)}
.catalogue.compact .catalogue-item{padding:22px 20px}

/* Adımlar */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.steps li{border-top:1px solid var(--brass-d);padding-top:18px}
.step-no{display:inline-block;font:600 1.6rem var(--serif);color:var(--brass-d);margin-bottom:6px}
.steps p{color:var(--muted);font-size:.95rem;margin:0}
.steps.short h3{font-size:1.25rem;margin:0}

/* Semtler */
.region-names{font:500 clamp(1.25rem,2.4vw,1.6rem)/1.9 var(--serif);color:var(--ink);display:flex;flex-wrap:wrap;align-items:center;gap:4px 14px;margin:0}
.region-names .primary{color:var(--brass-d);font-weight:600}
.gem{width:6px;height:6px;background:var(--brass);transform:rotate(45deg);display:inline-block}
.regions-note{color:var(--muted);margin-top:20px}
.district-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.district{border:1px solid var(--line);padding:22px;background:var(--paper)}
.district h3{margin-bottom:.25em}
.district p{margin:0;color:var(--muted);font-size:.93rem}

/* Bant */
.band{background:var(--ink-2);color:var(--on-ink);padding:clamp(44px,6vw,70px) 0}
.band .wrap{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.band h2{color:#F4EDDD;margin:0 0 .25em}
.band p{color:var(--on-ink-m);margin:0;max-width:36em}
.band-actions{display:flex;flex-wrap:wrap;gap:12px}

/* İçerik sayfaları */
.prose{max-width:720px}
.prose h2{margin-top:1.6em;font-size:clamp(1.6rem,3vw,2.1rem)}
.prose h2:first-child{margin-top:0}
.prose ul{padding-left:1.1em;margin:0 0 1.2em}
.prose li{margin-bottom:.4em}
.prose li::marker{color:var(--brass-d)}
.two-col{display:grid;grid-template-columns:1fr 320px;gap:56px;align-items:start}
.aside-card{background:var(--ink);color:var(--on-ink);padding:28px;position:sticky;top:100px}
.aside-card h3{color:var(--brass)}
.aside-card p{color:var(--on-ink-m);font-size:.95rem}
.aside-card .btn{width:100%;justify-content:center;margin-top:10px}
.aside-card .btn-line{color:var(--on-ink)}
.note{border-left:3px solid var(--brass);background:var(--paper-2);padding:16px 20px;font-size:.95rem;color:var(--muted)}

/* İlkeler */
.principles{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 48px}
.principles h3{margin-bottom:.3em}
.principles p{color:var(--muted);margin:0}

/* SSS */
.faq{max-width:820px}
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:20px 36px 20px 0;position:relative;font:600 1.3rem var(--serif);color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:16px;font:400 1.6rem var(--sans);color:var(--brass-d)}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--muted);margin:0 0 20px}
.faq-group+.faq-group{margin-top:48px}
.faq-group h2{font-size:1.6rem}

/* İletişim */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:start}
.contact-list{list-style:none;margin:24px 0 0;padding:0}
.contact-list li{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.contact-list span{color:var(--muted);font-size:.9rem}
.contact-list a,.contact-list b{font-weight:500;color:var(--ink);text-align:right}
.form{background:#FBF8F1;border:1px solid var(--line);padding:clamp(22px,4vw,36px)}
.form-note{color:var(--muted);font-size:.9rem}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;margin-bottom:16px}
.field label{font-size:.85rem;font-weight:500;margin-bottom:6px}
.field input,.field select,.field textarea{font:inherit;font-size:1rem;padding:11px 12px;border:1px solid var(--line);background:#fff;border-radius:var(--r);color:var(--text)}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brass-d);box-shadow:0 0 0 3px rgba(205,176,120,.25)}
.form-error{color:#9B2C2C;font-size:.9rem;min-height:1.2em;margin:0 0 10px}

/* Alt bilgi */
.site-footer{background:var(--ink);color:var(--on-ink-m);padding:60px 0 28px;font-size:.93rem}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:36px}
.site-footer h3{color:var(--brass);font-size:1.25rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:8px}
.site-footer a{text-decoration:none}.site-footer a:hover{color:var(--brass)}
.legal{margin-top:40px;padding-top:20px;border-top:1px solid rgba(205,176,120,.2);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:.82rem}
.legal p{margin:0}
.mobile-bar{display:none}

/* Duyarlı */
@media (max-width:1020px){
  .nav-toggle{display:block}
  .nav{position:absolute;top:100%;left:0;right:0;background:var(--ink);flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;border-bottom:1px solid rgba(205,176,120,.3);display:none}
  .nav.open{display:flex}
  .nav a:not(.btn){padding:12px 0;border-bottom:1px solid rgba(205,176,120,.12)}
  .nav .btn{margin-top:14px;justify-content:center}
  .catalogue.compact{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .hero-grid,.contact-grid,.two-col{grid-template-columns:1fr}
  .seal{max-width:220px;order:-1}
  .aside-card{position:static}
  .principles{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:16px;padding-bottom:62px}
  .wrap{padding:0 16px}
  .brand-sub{display:none}
  .hero{padding:20px 0 40px}
  .assurances,.steps,.field-row,.footer-grid{grid-template-columns:1fr}
  .catalogue.compact{grid-template-columns:1fr}
  .hero-actions .btn{width:100%;justify-content:center}
  .mobile-bar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--ink);border-top:1px solid rgba(205,176,120,.35)}
  .mobile-bar a{display:flex;align-items:center;justify-content:center;gap:8px;padding:15px 8px;color:var(--on-ink);text-decoration:none;font-weight:500;font-size:.95rem}
  .mobile-bar a+a{background:var(--brass);color:var(--ink)}
  .mobile-bar svg{width:18px;height:18px}
  .contact-list li{flex-direction:column;gap:2px}
  .contact-list a,.contact-list b{text-align:left}
}