/* Abai Optika — premium minimal design system
   Palette: white + deep blue (navy) */

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:#0d1b2a;
  background:#fff;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
:root{
  --navy:#0b3d91;
  --navy-2:#092c69;
  --ink:#0d1b2a;
  --muted:#5a6b80;
  --soft:#f4f7fb;
  --line:#e5ecf5;
  --accent:#3b7dff;
  --radius:18px;
  --shadow-sm:0 4px 20px rgba(11,61,145,.08);
  --shadow-md:0 20px 60px rgba(11,61,145,.15);
}
.container{width:min(1200px,92%);margin-inline:auto}

.eyebrow{
  display:inline-block;font-size:.78rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--navy);font-weight:700;
  padding:.35rem .7rem;border:1px solid var(--line);border-radius:999px;
  background:#fff;
}
.eyebrow.light{color:#cfe0ff;border-color:rgba(255,255,255,.25);background:rgba(255,255,255,.05)}

h1,h2,h3{font-family:'Inter',sans-serif;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.1}
h1{font-size:clamp(2.4rem,6vw,4.6rem);margin:.5rem 0 1rem}
h2{font-size:clamp(1.8rem,3.6vw,2.8rem);margin:.3rem 0 1.2rem}
h3{font-size:1.25rem;margin:0 0 .6rem}
p{color:var(--muted);margin:0 0 1rem}
.serif{font-family:'Instrument Serif',serif;font-style:normal;font-weight:800}

.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.95rem 1.4rem;border-radius:999px;
  font-weight:600;font-size:.98rem;transition:transform .2s,box-shadow .2s,background .2s;
  border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--navy);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--navy-2);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{background:var(--soft)}

/* Scroll progress */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--navy);z-index:100}

/* NAV */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.75);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:.25s}
.nav.scrolled{background:rgba(255,255,255,.9);border-color:var(--line);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:.85rem 0}
.brand{display:flex;align-items:center;gap:.65rem;font-weight:700}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--navy);color:#fff;
  display:grid;place-items:center;font-family:'Instrument Serif',serif;font-size:1.2rem;font-weight:800;
}
.brand-text{font-size:1.1rem;letter-spacing:-.01em}
.brand-text b{color:var(--navy)}
.nav-links{display:flex;align-items:center;gap:1.6rem}
.nav-links a{font-size:.95rem;color:var(--ink);opacity:.85;transition:.2s}
.nav-links a:hover{opacity:1;color:var(--navy)}
.nav-cta{background:var(--navy);color:#fff !important;padding:.55rem 1rem;border-radius:999px;opacity:1 !important}
.nav-cta:hover{background:var(--navy-2)}
.hamburger{display:none;background:none;border:0;cursor:pointer;padding:.5rem}
.hamburger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;transition:.25s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* HERO */
.hero{position:relative;min-height:92svh;display:flex;align-items:center;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-1}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(255,255,255,.85) 0%,rgba(255,255,255,.65) 60%,rgba(255,255,255,.95) 100%);}
.hero-inner{padding:6rem 0 5rem}
.hero-title{max-width:16ch}
.hero-title .serif{color:var(--navy)}
.hero-sub{font-size:1.15rem;max-width:60ch;color:var(--ink);opacity:.75}
.hero-cta{display:flex;gap:.8rem;flex-wrap:wrap;margin:1.8rem 0}
.hero-badges{display:flex;gap:2rem;flex-wrap:wrap;margin-top:2rem;padding-top:1.6rem;border-top:1px solid var(--line)}
.hero-badges div{display:flex;flex-direction:column}
.hero-badges b{font-family:'Instrument Serif',serif;font-size:1.8rem;color:var(--navy);font-weight:800}
.hero-badges span{font-size:.85rem;color:var(--muted)}
.scroll-hint{position:absolute;bottom:1.5rem;left:50%;transform:translateX(-50%);
  color:var(--navy);font-size:1.4rem;animation:bounce 2s infinite}
@keyframes bounce{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,-8px)}}

/* Trust bar */
.trust{background:var(--navy);color:#fff;padding:2rem 0}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.trust-grid b{font-family:'Instrument Serif',serif;font-size:2.4rem;display:block;color:#fff;font-weight:800}
.trust-grid span{font-size:.85rem;color:#cfe0ff;letter-spacing:.08em}

/* SECTIONS */
.section{padding:6rem 0}
.section.soft{background:var(--soft)}
.section.dark{background:linear-gradient(180deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff}
.section.dark p,.section.dark .light{color:#cfe0ff}
.section.dark h2.light{color:#fff}
.section-head{max-width:720px;margin-bottom:3rem}
.section-head h2 .serif{color:var(--navy)}
.section.dark .section-head h2 .serif{color:#8ab4ff}

.two-col{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.two-col.reverse .col-media{order:2}
.col-media img{border-radius:var(--radius);box-shadow:var(--shadow-md);width:100%;height:100%;object-fit:cover;max-height:560px}
.col-media{transition:transform .3s ease}
.col-copy h2 .serif{color:var(--navy)}
.section.dark .col-copy h2 .serif{color:#8ab4ff}

.zeiss-media{position:relative}
.floating-badge{
  position:absolute;top:1.2rem;right:1.2rem;
  background:#fff;color:var(--navy);padding:.9rem 1.1rem;border-radius:14px;
  font-weight:800;text-align:center;box-shadow:var(--shadow-md);font-size:1.05rem;
  line-height:1.1
}
.floating-badge small{font-weight:500;font-size:.7rem;color:var(--muted);letter-spacing:.15em;text-transform:uppercase}

/* Compare */
.compare-wrap{margin-top:5rem}
.compare-head{text-align:center;margin-bottom:1.5rem}
.compare{
  position:relative;width:100%;aspect-ratio:16/9;
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);
  background:#000;
}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.compare-blur{filter:blur(4px) saturate(.8);transform:scale(1.05)}
.compare-sharp{clip-path:inset(0 0 0 50%)}
.compare-handle{
  position:absolute;top:0;bottom:0;left:50%;width:3px;background:#fff;
  transform:translateX(-50%);pointer-events:none;
  box-shadow:0 0 0 1px rgba(11,61,145,.35);
}
.compare-handle span{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  background:#fff;color:var(--navy);width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;font-weight:800;box-shadow:var(--shadow-md);
}
.compare input[type=range]{
  position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;
}

/* CARDS */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:2rem;position:relative;transition:.3s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.card-num{font-family:'Instrument Serif',serif;color:var(--navy);opacity:.35;font-size:2.2rem;font-weight:800;margin-bottom:.5rem}
.card ul{margin:.6rem 0 0;padding-left:1.1rem;color:var(--muted)}
.card ul li{margin:.25rem 0}
.card ul.two-cols{columns:2;column-gap:1.2rem}

/* PRODUCTS */
.products{display:grid;grid-template-columns:repeat(2,1fr);gap:1.6rem}
.product{
  display:grid;grid-template-columns:1fr 1.4fr;background:#fff;border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:.3s;
}
.product:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.product-media img{width:100%;height:100%;object-fit:cover;min-height:100%}
.product-body{padding:1.6rem}
.product-body ul{margin:.6rem 0;padding-left:1.1rem;color:var(--muted)}
.product-body ul.two-cols{columns:2;column-gap:1.2rem}
.brand-strip{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1rem}
.brand-strip span{
  background:var(--soft);color:var(--navy);padding:.35rem .7rem;
  border-radius:999px;font-size:.8rem;font-weight:600
}

/* PROMO */
.promo{}
.promo-inner{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 100%);
  color:#fff;border-radius:24px;padding:4rem;text-align:center;
  box-shadow:var(--shadow-md);
}
.promo-inner h2{color:#fff}
.promo-inner h2 .serif{color:#8ab4ff}
.promo-inner p{color:#cfe0ff;max-width:60ch;margin-inline:auto}
.promo-inner .btn{margin-top:1rem;background:#fff;color:var(--navy)}

/* FAQ */
.faq{max-width:820px;margin-inline:auto;display:flex;flex-direction:column;gap:.75rem}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:1.1rem 1.4rem;transition:.2s;
}
.faq details[open]{box-shadow:var(--shadow-sm);border-color:transparent}
.faq summary{cursor:pointer;font-weight:600;color:var(--ink);list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';color:var(--navy);font-size:1.4rem;transition:.2s;font-weight:400}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin-top:.8rem;color:var(--muted)}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:2rem}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2rem;
}
.contact-line{margin:.4rem 0;color:var(--ink)}
.contact-line a{color:var(--navy);font-weight:600}
.hours table{width:100%;border-collapse:collapse;margin-top:.6rem}
.hours th,.hours td{text-align:left;padding:.55rem 0;border-bottom:1px solid var(--line);font-weight:500;color:var(--ink)}
.hours th{color:var(--muted);font-weight:500}
.hours tr.today{background:var(--soft)}
.hours tr.today th,.hours tr.today td{color:var(--navy);font-weight:700}
.hours-status{display:flex;align-items:center;gap:.5rem;margin-bottom:.6rem;font-weight:600;color:var(--ink)}
.hours-status .dot{width:10px;height:10px;border-radius:50%;background:#c94141}
.hours-status .dot.on{background:#2fbf6a;box-shadow:0 0 0 4px rgba(47,191,106,.18)}
.cta-row{display:flex;gap:.6rem;margin-top:1.2rem;flex-wrap:wrap}
.map{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);min-height:460px}
.map iframe{width:100%;height:100%;min-height:460px;border:0;display:block}

/* FOOTER */
.footer{background:var(--ink);color:#fff;padding:2.4rem 0}
.footer .brand-text{color:#fff}
.footer .brand-text b{color:#8ab4ff}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:1.5rem;flex-wrap:wrap}
.footer .muted{color:#8fa1b8}
.footer .small{font-size:.85rem}

/* Sticky call bar */
.call-bar{
  display:none;position:fixed;bottom:0;left:0;right:0;z-index:60;
  background:var(--navy);color:#fff;text-align:center;padding:.9rem;
  font-weight:700;letter-spacing:.02em;box-shadow:0 -8px 24px rgba(0,0,0,.15);
}

/* Back to top */
.to-top{
  position:fixed;bottom:1.2rem;right:1.2rem;width:46px;height:46px;
  border-radius:50%;background:var(--navy);color:#fff;border:0;font-size:1.2rem;cursor:pointer;
  opacity:0;pointer-events:none;transition:.25s;z-index:55;box-shadow:var(--shadow-md);
}
.to-top.visible{opacity:1;pointer-events:auto}

/* Reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s,transform .8s}
.reveal.in{opacity:1;transform:none}

/* MOBILE */
@media (max-width: 900px){
  .nav-links{
    position:fixed;top:64px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:flex-start;padding:1.4rem 6%;gap:1rem;
    border-bottom:1px solid var(--line);
    transform:translateY(-120%);transition:transform .3s;
  }
  .nav-links.open{transform:none}
  .hamburger{display:block}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:1.5rem}
  .two-col,.contact-grid,.cards,.products{grid-template-columns:1fr}
  .two-col.reverse .col-media{order:0}
  .product{grid-template-columns:1fr}
  .product-media img{max-height:240px}
  .section{padding:4rem 0}
  .promo-inner{padding:2.4rem 1.5rem}
  .hero{min-height:auto}
  .hero-inner{padding:4rem 0 3rem}
  .hero-badges{gap:1.2rem}
  .hero-badges b{font-size:1.4rem}
  .call-bar{display:block}
  body{padding-bottom:56px}
  .to-top{bottom:70px}
  .card ul.two-cols,.product-body ul.two-cols{columns:1}
  .compare-handle span{width:36px;height:36px;font-size:.85rem}
  .footer-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width: 500px){
  h1{font-size:2.2rem}
  h2{font-size:1.6rem}
  .promo-inner{padding:2rem 1.2rem}
}