/* ==========================================================================
   Arzan Parket — design system (light minimal + Swiss structure)
   All design values live in :root tokens below.
   ========================================================================== */

@font-face{font-family:"IRANYekanX";src:url("../fonts/iranyekan/IRANYekanX-Regular.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"IRANYekanX";src:url("../fonts/iranyekan/IRANYekanX-Medium.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"IRANYekanX";src:url("../fonts/iranyekan/IRANYekanX-Bold.woff2") format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"IRANYekanX";src:url("../fonts/iranyekan/IRANYekanX-ExtraBold.woff2") format("woff2");font-weight:800;font-display:swap}

:root{
  /* colors */
  --color-primary:#fff200;
  --color-primary-hover:#e6d900;
  --color-secondary:#161616;
  --color-bg:#ffffff;
  --color-surface:#faf9ef;
  --color-text:#161616;
  --color-text-muted:#5f5f5f;
  --color-border:#e3e3e3;
  --color-on-primary:#161616;
  --color-success:#1b7a3d;
  --color-error:#b3261e;
  --color-focus:#0b57d0;

  /* typography */
  --font-family:"IRANYekanX",Tahoma,sans-serif;
  --fw-regular:400;--fw-medium:500;--fw-bold:700;--fw-black:800;
  --fs-caption:.8125rem;--fs-body:1rem;--fs-lead:1.125rem;
  --fs-h3:1rem;--fs-h2:clamp(1.625rem,3.4vw,2.375rem);--fs-h1:clamp(1.5rem,3vw,2.25rem);
  --fs-price:1.375rem;
  --lh-body:1.9;--lh-head:1.55;

  /* spacing (4px scale) */
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;

  /* layout */
  --max-w:1180px;
  --section-y:var(--sp-8);
  --radius:4px;
  --shadow:0 8px 24px rgba(0,0,0,.12);
  --header-h:72px;

  /* motion */
  --dur:.25s;--ease:cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
*{margin:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + var(--sp-4));-webkit-text-size-adjust:100%}
body{font-family:var(--font-family);font-size:var(--fs-body);line-height:var(--lh-body);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{padding:0;list-style:none}
address{font-style:normal}
h1,h2,h3{line-height:var(--lh-head);font-weight:var(--fw-bold)}
mark{background:linear-gradient(transparent 62%,var(--color-primary) 62%);color:inherit;padding:0 var(--sp-1)}
:focus-visible{outline:3px solid var(--color-focus);outline-offset:3px;border-radius:var(--radius)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{max-width:var(--max-w);margin-inline:auto;padding-inline:var(--sp-6)}
.muted{color:var(--color-text-muted)}
.skip{position:absolute;top:-100px;right:var(--sp-4);z-index:100;background:var(--color-secondary);color:var(--color-primary);padding:var(--sp-3) var(--sp-5);border-radius:var(--radius)}
.skip:focus{top:var(--sp-2)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);min-height:44px;padding:var(--sp-3) var(--sp-5);border:1px solid transparent;border-radius:var(--radius);font:inherit;font-size:.9375rem;font-weight:var(--fw-medium);line-height:1.4;cursor:pointer;transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease)}
.btn:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-primary{background:var(--color-secondary);border-color:var(--color-secondary);color:#fff}
.btn-primary:hover{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-on-primary)}
.btn-secondary{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-on-primary)}
.btn-secondary:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover)}
.btn-outlined{background:transparent;border-color:var(--color-secondary);color:var(--color-secondary)}
.btn-outlined:hover{background:var(--color-primary);border-color:var(--color-primary)}
.text-link{font-weight:var(--fw-medium);border-bottom:2px solid var(--color-primary)}
.text-link:hover{border-color:currentColor}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:70;background:var(--color-bg);border-bottom:1px solid var(--color-border)}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-5);height:var(--header-h)}
.brand img{height:34px;width:auto}
.nav{display:flex;gap:var(--sp-6);font-size:.875rem;font-weight:var(--fw-medium)}
.nav a{padding:var(--sp-2) 0;border-bottom:2px solid transparent;transition:border-color var(--dur) var(--ease)}
.nav a:hover,.nav a.is-active{border-color:var(--color-primary)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--color-secondary);border-radius:var(--radius);background:var(--color-bg);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--color-secondary);transition:transform var(--dur) var(--ease),opacity var(--dur)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- slider ---------- */
.slider{position:relative;height:min(76vh,600px);min-height:440px;overflow:hidden;background:#e9e9e9}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .7s var(--ease),visibility .7s}
.slide.is-active{opacity:1;visibility:visible}
.slide-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.slide-wrap{position:relative;height:100%;display:flex;align-items:center}
.panel{background:var(--color-bg);padding:var(--sp-6) var(--sp-7);max-width:470px;border-top:4px solid var(--color-primary)}
.panel-count{font-size:var(--fs-caption);color:var(--color-text-muted);margin-bottom:var(--sp-2)}
.panel h1,.panel h2{font-size:var(--fs-h1)}
.panel-text{color:var(--color-text-muted);margin:var(--sp-3) 0 var(--sp-5)}
.panel-actions{display:flex;flex-wrap:wrap;gap:var(--sp-3)}
.slider-ctrl{position:absolute;bottom:var(--sp-5);inset-inline-start:max(var(--sp-6),calc((100% - var(--max-w))/2 + var(--sp-6)));display:flex;align-items:center;gap:var(--sp-2);z-index:5;direction:ltr}
.ctrl-btn{width:44px;height:44px;border:1px solid var(--color-secondary);background:var(--color-bg);border-radius:var(--radius);cursor:pointer;font-size:1rem;color:var(--color-secondary);transition:background var(--dur) var(--ease)}
.ctrl-btn:hover{background:var(--color-primary);border-color:var(--color-primary)}
.slider-next{order:0}.slider-prev{order:1}.dots{order:2}
.dots{display:flex;gap:var(--sp-1);background:var(--color-bg);padding:0 var(--sp-2);border-radius:var(--radius);height:44px;align-items:center}
.dots button{width:48px;height:44px;border:0;background:none;cursor:pointer;position:relative;padding:0}
/* gray track */
.dots button::after{content:"";position:absolute;inset:50% var(--sp-2) auto;height:3px;margin-top:-1px;background:#d2d2d2}
/* progress fill: its animation length is the slide duration */
.dots button span{position:absolute;z-index:1;inset:50% var(--sp-2) auto;height:3px;margin-top:-1px;background:var(--color-secondary);transform:scaleX(0);transform-origin:left center}
.dots button[aria-selected="true"] span{animation:dot-fill var(--slide-duration) linear forwards}
.slider.is-paused .dots button[aria-selected="true"] span{animation-play-state:paused}
@keyframes dot-fill{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.slider{--slide-duration:6s;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.slide-img{-webkit-user-drag:none}

/* ---------- facts strip ---------- */
.facts{border-bottom:1px solid var(--color-border)}
.facts ul{display:grid;grid-template-columns:repeat(3,1fr)}
.facts li{display:flex;align-items:center;gap:var(--sp-3);padding-block:var(--sp-5);font-size:.875rem;font-weight:var(--fw-medium)}
.facts li+li{border-inline-start:1px solid var(--color-border);padding-inline-start:var(--sp-6)}
.facts li::before{content:"";width:8px;height:8px;background:var(--color-primary);outline:1px solid var(--color-secondary);outline-offset:2px;flex:none}

/* ---------- sections ---------- */
.section{padding-block:var(--section-y)}
.section-head{margin-bottom:var(--sp-7)}
.section h2{font-size:var(--fs-h2)}
.price-updated{font-size:var(--fs-caption);margin:calc(var(--sp-5) * -1) 0 var(--sp-5)}

/* ---------- product cards ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--sp-6)}
.card{position:relative}
.card-img{display:block;position:relative;width:100%;padding:0;overflow:hidden;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);cursor:zoom-in}
.card-img img{width:100%;aspect-ratio:988/600;object-fit:cover;transition:transform .5s var(--ease)}
.card-img:hover img{transform:scale(1.04)}
.card-body{padding-top:var(--sp-4)}
.card h3{font-size:var(--fs-h3);font-weight:var(--fw-medium);margin-bottom:var(--sp-2)}
.price{font-size:var(--fs-price);font-weight:var(--fw-bold);padding-top:var(--sp-3);border-top:1px solid var(--color-border)}
.price small{font-size:.75rem;font-weight:var(--fw-regular);color:var(--color-text-muted)}

/* ---------- about ---------- */
.about{background:var(--color-surface);border-block:1px solid var(--color-border)}
.about-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:var(--sp-7);align-items:start}
.about h2{font-size:1.75rem}
.about-text{color:#444;line-height:2.1;border-inline-start:3px solid var(--color-primary);padding-inline-start:var(--sp-5);max-width:62ch}

/* ---------- contact + map ---------- */
.contact-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));border:1px solid var(--color-border);border-radius:var(--radius);margin-bottom:var(--sp-6)}
.contact-card{padding:var(--sp-5) var(--sp-6)}
.contact-card+.contact-card{border-inline-start:1px solid var(--color-border)}
.label{display:block;font-size:var(--fs-caption);color:var(--color-text-muted);margin-bottom:var(--sp-1)}
.label i{color:var(--color-secondary);margin-inline-end:var(--sp-1)}
.contact-card p,.contact-link{font-size:1.125rem;font-weight:var(--fw-medium)}
.contact-link{display:inline-block;border-bottom:2px solid var(--color-primary);padding-block:var(--sp-1)}
.contact-link:hover{background:var(--color-primary)}
.map{position:relative;display:block;overflow:hidden;border:1px solid var(--color-border);border-radius:var(--radius);aspect-ratio:1200/520;background:#e9e9e9}
.map>img:first-child{width:100%;height:100%;object-fit:cover}
.map-pin{position:absolute;top:50%;left:50%;width:48px;height:60px;transform:translate(-50%,-92%);filter:drop-shadow(0 4px 4px rgba(0,0,0,.3))}
.map-cta{position:absolute;bottom:var(--sp-4);inset-inline-end:var(--sp-4);display:inline-flex;gap:var(--sp-2);align-items:center;min-height:44px;padding:var(--sp-2) var(--sp-5);background:var(--color-secondary);color:var(--color-primary);border-radius:var(--radius);font-weight:var(--fw-medium);font-size:.9375rem;transition:background var(--dur),color var(--dur)}
.map:hover .map-cta{background:var(--color-primary);color:var(--color-on-primary)}
.map-credit{position:absolute;bottom:0;inset-inline-start:0;background:rgba(255,255,255,.85);font-size:.6875rem;padding:0 var(--sp-2);direction:rtl}

/* ---------- footer ---------- */
.site-footer{background:var(--color-secondary);color:#d8d8d8;font-size:.9375rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:var(--sp-7);padding-block:var(--sp-7)}
.logo-inv{filter:invert(1);height:34px;width:auto;margin-bottom:var(--sp-4)}
.footer-brand p{margin-bottom:var(--sp-3);max-width:40ch}
.footer-brand .text-link{color:var(--color-primary)}
.footer-title{font-size:1rem;color:var(--color-primary);margin-bottom:var(--sp-4)}
.site-footer li{margin-bottom:var(--sp-2)}
.site-footer li a:hover{color:var(--color-primary)}
.site-footer li i{color:var(--color-primary);width:1.25em;text-align:center}
.footer-bottom{border-top:1px solid #333;padding-block:var(--sp-4);font-size:.8125rem;color:#aaa}

/* ---------- mobile contact bar ---------- */
.mobile-bar{display:none}

/* ---------- lightbox ---------- */
.lightbox{border:0;padding:0;background:transparent;max-width:min(96vw,1100px);width:100%;max-height:92vh;margin:auto;overflow:visible}
.lightbox::backdrop{background:rgba(0,0,0,.85)}
.lightbox figure{position:relative;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.lightbox img{-webkit-user-drag:none}
.lightbox img{width:100%;height:auto;max-height:80vh;object-fit:contain;border-radius:var(--radius);background:var(--color-surface)}
.lightbox figcaption{color:#fff;text-align:center;padding:var(--sp-3);font-size:.9375rem}
.lb-btn{position:absolute;z-index:2;width:48px;height:48px;border:0;border-radius:var(--radius);background:var(--color-primary);color:var(--color-secondary);font-size:1.125rem;cursor:pointer;transition:background var(--dur)}
.lb-btn:hover{background:#fff}
.lb-close{top:calc(var(--sp-4) * -1 - 48px);inset-inline-start:0}
.lb-prev,.lb-next{top:45%}
.lb-prev{right:var(--sp-3)}
.lb-next{left:var(--sp-3)}
body.is-locked{overflow:hidden}

/* ---------- 404 ---------- */
.notfound{min-height:100vh;display:grid;place-content:center;text-align:center;gap:var(--sp-4);padding:var(--sp-5)}
.notfound h1{font-size:4rem}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:767px){
  :root{--section-y:var(--sp-7);--header-h:64px}
  .wrap{padding-inline:var(--sp-4)}
  .header-tel{display:none}
  .menu-toggle{display:flex}
  .nav{position:absolute;top:var(--header-h);inset-inline:0;background:var(--color-bg);flex-direction:column;gap:0;border-bottom:1px solid var(--color-border);padding:var(--sp-2) var(--sp-4) var(--sp-4);display:none}
  .nav.is-open{display:flex}
  .nav-backdrop{position:fixed;inset:var(--header-h) 0 0;z-index:65;background:rgba(0,0,0,.55);animation:fade-in var(--dur) var(--ease)}
  .nav-backdrop[hidden]{display:none}
  /* smaller slider controls on mobile */
  .ctrl-btn{width:36px;height:36px;font-size:.8125rem}
  .dots{height:36px;padding:0 var(--sp-1)}
  .dots button{width:36px;height:36px}
  .dots button::after,.dots button span{inset-inline:var(--sp-2)}
  .slider-ctrl{gap:var(--sp-1)}
  .nav a{padding:var(--sp-4) 0;border-bottom:1px solid var(--color-border);font-size:1rem}
  .slider{height:min(78vh,560px);min-height:460px}
  .slide-wrap{align-items:flex-end;padding:0}
  .panel{max-width:none;width:100%;padding:var(--sp-5) var(--sp-4) calc(var(--sp-8) + var(--sp-2));border-top-width:4px}
  .panel-text{margin-bottom:var(--sp-4)}
  .slider-ctrl{inset-inline-start:var(--sp-4);bottom:var(--sp-4)}
  .facts ul{grid-template-columns:1fr}
  .facts li{padding-block:var(--sp-3)}
  .facts li+li{border-inline-start:0;padding-inline-start:0;border-top:1px solid var(--color-border)}
  .section-head{margin-bottom:var(--sp-5)}
  .about-grid{grid-template-columns:1fr;gap:var(--sp-4)}
  .contact-card+.contact-card{border-inline-start:0;border-top:1px solid var(--color-border)}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-5)}
  .map{aspect-ratio:4/3}
  .map>img:first-child{object-position:center}
  body{padding-bottom:64px}
  .mobile-bar{display:grid;grid-template-columns:repeat(3,1fr);position:fixed;bottom:0;inset-inline:0;z-index:60;background:var(--color-secondary);border-top:3px solid var(--color-primary)}
  .mobile-bar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:61px;color:#fff;font-size:.75rem;font-weight:var(--fw-medium)}
  .mobile-bar a i{color:var(--color-primary);font-size:1.0625rem}
  .mobile-bar a:active{background:#333}
  .mobile-bar a+a{border-inline-start:1px solid #333}
  .lb-prev,.lb-next{top:auto;bottom:calc(var(--sp-3) * -1 - 48px)}
}
@media (min-width:576px) and (max-width:767px){
  .grid{grid-template-columns:repeat(2,1fr)}
}

@keyframes fade-in{from{opacity:0}to{opacity:1}}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .card-img:hover img{transform:none}
}