/* RAKU Design — luxury slab site
   Palette: liver + silver. Display: Cormorant Garamond (Latin) / Noto Naskh Arabic (Persian). Body: Vazirmatn. */
:root{
  --night:#24090C;      /* deepest, cinematic sections */
  --deep:#3A0F12;
  --liver:#4A1418;
  --silver:#C0C2C6;
  --t1:#D6D7DA;         /* light grey text on dark */
  --t2:#A3A5AA;
  --paper:#F3F1EE;      /* gallery walls for browsing */
  --paper2:#E9E6E2;
  --ink:#2B2224;        /* text on paper */
  --ink2:#6E6567;
  --line-d:rgba(192,194,198,.22);
  --line-l:rgba(74,20,24,.14);
  --serif-lat:"Cormorant Garamond","Cormorant",Georgia,serif;
  --serif-fa:"Noto Naskh Arabic","Vazirmatn",serif;
  --sans:"Vazirmatn",system-ui,sans-serif;
  --wrap:1320px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.9;font-size:16px;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit}
:focus-visible{outline:1px solid var(--silver);outline-offset:3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 clamp(1.2rem,4vw,3rem)}
.lat{font-family:var(--serif-lat);direction:ltr;unicode-bidi:isolate}
h1,h2,h3{font-family:var(--serif-fa);font-weight:500;line-height:1.5}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(36,9,12,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-d)}
.bar{display:flex;align-items:center;gap:2rem;height:76px}
.brand img{height:46px;width:auto}
.menu{display:flex;gap:1.9rem;margin-inline-start:auto}
.menu a{color:var(--t2);text-decoration:none;font-size:.9rem;padding:.3rem 0;border-bottom:1px solid transparent;transition:color .3s,border-color .3s}
.menu a:hover,.menu a[aria-current]{color:var(--t1);border-color:var(--silver)}
.header-cta{color:var(--t1);text-decoration:none;font-size:.85rem;border:1px solid var(--line-d);padding:.55rem 1.2rem;transition:border-color .3s}
.header-cta:hover{border-color:var(--silver)}
.burger{display:none;background:none;border:0;margin-inline-start:auto;cursor:pointer;padding:.5rem}
.burger span{display:block;width:24px;height:1px;background:var(--t1);margin:6px 0}
@media (max-width:1060px){
  .burger{display:block}.header-cta{display:none}
  .menu{display:none;position:absolute;top:76px;inset-inline:0;flex-direction:column;gap:0;background:var(--night);padding:1rem clamp(1.2rem,4vw,3rem) 2rem;border-bottom:1px solid var(--line-d)}
  .menu.open{display:flex}.menu a{padding:.9rem 0;border-bottom:1px solid var(--line-d);font-size:1rem}
}

/* ---------- buttons ---------- */
.btn{display:inline-block;text-decoration:none;font-family:var(--sans);font-size:.9rem;padding:.9rem 2rem;cursor:pointer;border:1px solid currentColor;background:transparent;transition:background .3s,color .3s}
.on-dark .btn,.btn.light{color:var(--t1);border-color:var(--line-d)}
.on-dark .btn:hover,.btn.light:hover{border-color:var(--silver)}
.on-dark .btn.solid,.btn.solid.light{background:var(--silver);color:var(--night);border-color:var(--silver)}
.on-dark .btn.solid:hover{background:var(--t1)}
.btn.dark{color:var(--liver);border-color:var(--liver)}
.btn.dark:hover{background:var(--liver);color:#fff}
.btn.dark.solid{background:var(--liver);color:#fff}
.btn.dark.solid:hover{background:var(--deep)}
.actions{display:flex;flex-wrap:wrap;gap:.8rem}
.textlink{font-size:.88rem;text-decoration:none;border-bottom:1px solid currentColor;padding-bottom:2px;opacity:.85}
.textlink:hover{opacity:1}

/* ---------- dark sections ---------- */
.on-dark{background:var(--night);color:var(--t1)}
.on-dark.liver{background:var(--liver)}
.on-dark.deep{background:var(--deep)}
.on-dark p{color:var(--t2)}
.section{padding:clamp(4.5rem,9vw,8rem) 0}
.head{display:flex;justify-content:space-between;align-items:end;gap:2rem;margin-bottom:3rem;flex-wrap:wrap}
.head h2{font-size:clamp(1.7rem,3vw,2.5rem)}
.head p{max-width:34em;color:var(--ink2);font-size:.95rem}
.on-dark .head p{color:var(--t2)}

/* ---------- hero ---------- */
.hero{min-height:calc(100svh - 76px);display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:4rem;padding:4rem 0}
.hero .copy .lat-title{font-family:var(--serif-lat);font-weight:300;direction:ltr;text-align:right;font-size:clamp(3.2rem,7.4vw,7rem);line-height:.98;letter-spacing:-.01em;color:var(--t1)}
.hero .copy .fa-title{font-family:var(--serif-fa);font-size:clamp(1.4rem,2.4vw,2rem);color:var(--silver);margin:1.4rem 0 2rem}
.hero .copy p{max-width:26em;margin-bottom:2.4rem}
.hero .stage{display:flex;justify-content:center}
@media (max-width:900px){.hero{grid-template-columns:1fr;gap:3rem;padding:3rem 0 4rem}.hero .stage{order:-1}}

/* slab drawing: true-proportion slab with dimension lines (signature element) */
.slab-draw{position:relative;display:inline-flex;gap:3px;padding:0 0 34px 34px}
.slab-draw .s{height:min(64svh,560px);aspect-ratio:120/270;background:#ddd center/cover no-repeat;box-shadow:0 30px 60px rgba(0,0,0,.35)}
.slab-draw .s.mirror{transform:scaleX(-1)}
.slab-draw .dim-w,.slab-draw .dim-h{position:absolute;color:var(--t2);font:300 .82rem var(--serif-lat);letter-spacing:.06em}
.slab-draw .dim-w{left:34px;right:0;bottom:6px;border-top:1px solid var(--line-d);text-align:center;padding-top:6px}
.slab-draw .dim-h{top:0;bottom:34px;left:6px;border-right:1px solid var(--line-d);writing-mode:vertical-rl;transform:rotate(180deg);text-align:center;padding-right:6px}
.slab-draw.open .s{animation:open 1.6s cubic-bezier(.2,.7,.1,1) both}
.slab-draw.open .s.mirror{animation-name:openm}
@keyframes open{from{transform:translateX(30%) ;opacity:0}to{transform:none;opacity:1}}
@keyframes openm{from{transform:scaleX(-1) translateX(30%);opacity:0}to{transform:scaleX(-1);opacity:1}}

/* ---------- slab rack (product grid) ---------- */
.rack{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:3rem 1.6rem;align-items:end}
.slab-card{text-decoration:none;color:inherit;display:block}
.slab-card .frame{position:relative;display:flex;align-items:flex-end;justify-content:center;height:360px}
.slab-card .face{width:100%;background:var(--paper2) center/cover no-repeat;transition:transform .5s cubic-bezier(.2,.7,.1,1),box-shadow .5s}
.slab-card:hover .face{transform:translateY(-8px);box-shadow:0 24px 40px rgba(43,34,36,.18)}
.slab-card .face.r120x270{aspect-ratio:120/270;width:auto;height:100%}
.slab-card .face.r120x240{aspect-ratio:120/240;width:auto;height:94%}
.slab-card .face.r80x160{aspect-ratio:80/160;width:auto;height:70%}
.slab-card .face.r60x120{aspect-ratio:60/120;width:auto;height:52%}
.slab-card .face.r120x120{aspect-ratio:1;width:auto;height:52%}
.slab-card .face.empty{background:var(--paper2);display:flex;align-items:center;justify-content:center;color:var(--ink2);font-size:.75rem;border:1px solid var(--line-l)}
.slab-card .new{position:absolute;top:.6rem;inset-inline-start:.6rem;background:var(--liver);color:#fff;font-size:.7rem;padding:.15rem .6rem;z-index:2}
.slab-card .meta{margin-top:1.1rem;border-top:1px solid var(--line-l);padding-top:.8rem;display:flex;justify-content:space-between;align-items:baseline;gap:.5rem}
.slab-card .meta b{font-family:var(--serif-fa);font-weight:500;font-size:1.05rem}
.slab-card .meta span{font-size:.78rem;color:var(--ink2);white-space:nowrap}
.slab-card .meta .lat{display:block;font-size:.9rem;color:var(--ink2)}
.on-dark .slab-card .meta{border-color:var(--line-d)}.on-dark .slab-card .meta span,.on-dark .slab-card .meta .lat{color:var(--t2)}
.on-dark .slab-card .face.empty{background:rgba(255,255,255,.04);border-color:var(--line-d);color:var(--t2)}
@media (max-width:560px){.rack{grid-template-columns:1fr 1fr;gap:2.4rem 1rem}.slab-card .frame{height:280px}}

/* ---------- filters ---------- */
.filters{display:flex;flex-wrap:wrap;gap:2.2rem;align-items:flex-start;border-top:1px solid var(--line-l);border-bottom:1px solid var(--line-l);padding:1.4rem 0;margin-bottom:3.5rem}
.fgroup{display:flex;flex-direction:column;gap:.5rem}
.fgroup>span{font-size:.78rem;color:var(--ink2)}
.chips{display:flex;flex-wrap:wrap;gap:.4rem}
.chip{font:inherit;font-size:.82rem;background:none;border:1px solid var(--line-l);color:var(--ink);padding:.35rem .95rem;cursor:pointer;transition:all .25s}
.chip:hover{border-color:var(--liver)}
.chip[aria-pressed=true]{background:var(--liver);color:#fff;border-color:var(--liver)}
.filters input{font:inherit;font-size:.88rem;border:0;border-bottom:1px solid var(--line-l);background:none;padding:.35rem 0;min-width:180px}
.filters .count{margin-inline-start:auto;align-self:flex-end;font-size:.82rem;color:var(--ink2)}
.empty-state{grid-column:1/-1;padding:3rem 0;color:var(--ink2)}

/* ---------- page title ---------- */
.ptitle{padding:clamp(3.5rem,7vw,6rem) 0 clamp(2.5rem,5vw,4rem)}
.ptitle .crumbs{font-size:.8rem;color:var(--t2);margin-bottom:1.6rem}
.ptitle .crumbs a{text-decoration:none}
.ptitle h1{font-size:clamp(2rem,4.4vw,3.4rem)}
.ptitle .lat{display:block;font-size:clamp(1.1rem,2vw,1.5rem);color:var(--t2);font-style:italic;font-weight:300;margin-top:.2rem}
.ptitle p{max-width:36em;margin-top:1.2rem}

/* ---------- product detail ---------- */
.pd{display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(2rem,5vw,5rem);align-items:start;padding:3rem 0 5rem}
@media (max-width:900px){.pd{grid-template-columns:1fr}}
.viewer{position:sticky;top:100px}
.viewer .tabs{display:flex;gap:1.6rem;border-bottom:1px solid var(--line-l);margin-bottom:1.4rem;overflow-x:auto}
.viewer .tabs button{font:inherit;font-size:.86rem;background:none;border:0;border-bottom:1px solid transparent;margin-bottom:-1px;padding:.7rem 0;color:var(--ink2);cursor:pointer;white-space:nowrap}
.viewer .tabs button[aria-selected=true]{color:var(--ink);border-color:var(--liver)}
.view{background:var(--paper2);display:flex;align-items:center;justify-content:center;height:min(72svh,660px);overflow:hidden;position:relative}
.view .full{height:92%;background:center/cover no-repeat;box-shadow:0 20px 40px rgba(43,34,36,.2)}
.view .zoom{position:absolute;inset:0;background:center/260% no-repeat;cursor:zoom-in}
.view .book{display:flex;gap:2px;height:92%}
.view .book>div{height:100%;background:center/cover no-repeat}
.view .book>div:last-child{transform:scaleX(-1)}
.view .note{position:absolute;bottom:.8rem;inset-inline-start:1rem;font-size:.75rem;color:var(--ink2);background:rgba(243,241,238,.85);padding:.15rem .6rem}
.pinfo h1{font-size:clamp(2rem,3.4vw,2.8rem)}
.pinfo .lat{font-size:1.4rem;color:var(--ink2);font-style:italic;font-weight:300}
.pinfo .desc{color:var(--ink2);margin:1.4rem 0 2rem;max-width:30em}
.opt{margin-bottom:1.6rem}
.opt>span{display:block;font-size:.78rem;color:var(--ink2);margin-bottom:.5rem}
.spec{width:100%;border-collapse:collapse;margin:1rem 0 2.2rem;font-size:.9rem}
.spec th,.spec td{text-align:start;padding:.85rem 0;border-bottom:1px solid var(--line-l);font-weight:400}
.spec th{color:var(--ink2);width:42%}
.pinfo .actions .btn{flex:1 1 auto;text-align:center}
.pinfo .more{display:flex;gap:1.8rem;margin-top:1.4rem;flex-wrap:wrap}
.todo{background:#fff3c4;color:#5a4400;padding:.05rem .4rem;font-size:.85em}

/* ---------- room visualizer ---------- */
.room{position:relative;aspect-ratio:16/10;width:100%;overflow:hidden;background:#cfc9c2}
.room .wall{position:absolute;inset:0 0 24% 0;display:flex;gap:2px;background:#8d8680;justify-content:center}
.room .wall>div{flex:0 0 auto;height:100%;aspect-ratio:120/270;background:center/cover no-repeat}
.room .wall>div.m{transform:scaleX(-1)}
.room .wall>div.blank{background:linear-gradient(160deg,#d9d4ce,#bdb6ae)}
.room .floor{position:absolute;inset:76% 0 0 0;background:linear-gradient(180deg,#5b5450,#2f2a28)}
.room .shade{position:absolute;inset:0;background:radial-gradient(120% 90% at 50% 10%,transparent 40%,rgba(0,0,0,.35));pointer-events:none}
.room svg.furn{position:absolute;left:50%;bottom:6%;transform:translateX(-50%);width:62%;height:auto}
.room .cap{position:absolute;top:.8rem;inset-inline-start:1rem;font-size:.75rem;color:#fff;background:rgba(36,9,12,.55);padding:.15rem .6rem}
.vis{display:grid;grid-template-columns:1fr 300px;gap:2rem;align-items:start}
@media (max-width:900px){.vis{grid-template-columns:1fr}}
.vis .picker{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem;max-height:520px;overflow:auto}
.vis .picker button{font:inherit;font-size:.72rem;border:1px solid var(--line-l);background:var(--paper);cursor:pointer;padding:.4rem;text-align:center;color:var(--ink)}
.vis .picker button .sw{aspect-ratio:1;background:var(--paper2) center/cover;margin-bottom:.3rem}
.vis .picker button[aria-pressed=true]{border-color:var(--liver);box-shadow:inset 0 0 0 1px var(--liver)}
.scene-tabs{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:1.2rem}

/* ---------- editorial blocks ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2.5rem,6vw,6rem);align-items:center}
.split.flip>:first-child{order:2}
@media (max-width:900px){.split{grid-template-columns:1fr}.split.flip>:first-child{order:0}}
.split h2{font-size:clamp(1.8rem,3.2vw,2.6rem);margin-bottom:1.2rem}
.split p{margin-bottom:1.1rem;max-width:32em}
.split .actions{margin-top:2rem}
.photo{aspect-ratio:4/5;background:center/cover no-repeat}
.list-rows{border-top:1px solid var(--line-l)}
.on-dark .list-rows{border-color:var(--line-d)}
.list-rows>div{display:grid;grid-template-columns:1fr 2fr;gap:2rem;padding:1.4rem 0;border-bottom:1px solid var(--line-l)}
.on-dark .list-rows>div{border-color:var(--line-d)}
.list-rows h3{font-size:1.15rem}
.list-rows p{color:var(--ink2);font-size:.92rem}
@media (max-width:640px){.list-rows>div{grid-template-columns:1fr;gap:.3rem}}
ol.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;counter-reset:s}
ol.steps li{counter-increment:s;border-top:1px solid var(--line-d);padding-top:1.2rem}
ol.steps li::before{content:counter(s);font-family:var(--serif-lat);font-size:2.2rem;font-weight:300;color:var(--silver);display:block;line-height:1;margin-bottom:.8rem}
ol.steps h3{font-size:1.1rem;margin-bottom:.4rem}
ol.steps p{font-size:.88rem}
@media (max-width:860px){ol.steps{grid-template-columns:1fr 1fr}}
@media (max-width:500px){ol.steps{grid-template-columns:1fr}}

/* size ruler row */
.sizes{display:flex;align-items:flex-end;gap:clamp(1rem,3vw,3rem);flex-wrap:wrap}
.sizes a{text-decoration:none;color:inherit;display:flex;flex-direction:column;align-items:center;gap:.8rem}
.sizes .sh{border:1px solid var(--line-l);background:var(--paper2);transition:background .3s}
.sizes a:hover .sh{background:var(--liver)}
.sizes b{font-family:var(--serif-lat);font-weight:400;font-size:1.05rem;direction:ltr}
.sizes small{font-size:.75rem;color:var(--ink2)}

/* quote / manifesto */
.manifesto{text-align:center;max-width:46rem;margin:0 auto}
.manifesto .lat{font-size:clamp(1.8rem,3.6vw,3rem);font-weight:300;font-style:italic;color:var(--t1);line-height:1.3;display:block}
.manifesto p{margin-top:1.4rem;font-family:var(--serif-fa);font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--t2)}

/* catalog */
.cat{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}
.cat article{border:1px solid var(--line-l);background:#fff}
.cat .cover{aspect-ratio:3/4;background:var(--liver);display:flex;align-items:center;justify-content:center}
.cat .cover img{width:42%}
.cat .body{padding:1.6rem}
.cat h3{font-size:1.25rem;margin-bottom:.4rem}
.cat p{color:var(--ink2);font-size:.9rem;margin-bottom:1.4rem}

/* forms */
.form{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem 2rem;max-width:860px}
.form label{display:flex;flex-direction:column;gap:.4rem;font-size:.8rem;color:var(--ink2)}
.form .full{grid-column:1/-1}
.form input,.form select,.form textarea{font:inherit;font-size:.95rem;color:var(--ink);background:transparent;border:0;border-bottom:1px solid rgba(43,34,36,.3);padding:.55rem 0;border-radius:0}
.form textarea{min-height:110px;resize:vertical}
.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--liver)}
.form .submit{grid-column:1/-1;display:flex;gap:1.4rem;align-items:center;flex-wrap:wrap}
.form .hint{font-size:.78rem;color:var(--ink2)}
@media (max-width:640px){.form{grid-template-columns:1fr}}

/* contact */
.contacts{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));border-top:1px solid var(--line-l)}
.contacts>*{padding:1.6rem 0;border-bottom:1px solid var(--line-l);text-decoration:none;color:inherit}
.contacts b{display:block;font-family:var(--serif-fa);font-weight:500;font-size:1.1rem;margin-bottom:.2rem}
.contacts span{color:var(--ink2);font-size:.9rem}
details.faq{border-bottom:1px solid var(--line-l);padding:1.2rem 0;max-width:860px}
details.faq summary{cursor:pointer;font-family:var(--serif-fa);font-size:1.08rem;list-style:none;display:flex;justify-content:space-between}
details.faq summary::after{content:"+";font-family:var(--serif-lat);font-size:1.4rem;color:var(--ink2)}
details.faq[open] summary::after{content:"−"}
details.faq p{color:var(--ink2);margin-top:.8rem;font-size:.92rem}

/* footer */
.site-footer{background:var(--night);color:var(--t2);padding:5rem 0 2rem;font-size:.88rem}
.site-footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2.5rem}
@media (max-width:860px){.site-footer .cols{grid-template-columns:1fr 1fr}}
.site-footer img{height:58px;width:auto;margin-bottom:1.2rem}
.site-footer h4{color:var(--t1);font-weight:400;font-size:.9rem;margin-bottom:1rem}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:.55rem}
.site-footer a{text-decoration:none}.site-footer a:hover{color:var(--t1)}
.site-footer .bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;border-top:1px solid var(--line-d);margin-top:4rem;padding-top:1.6rem;font-size:.78rem}
.ptitle{padding-inline:clamp(1.2rem,4vw,3rem)}
.ptitle{padding-block:clamp(3.5rem,7vw,6rem) clamp(2.5rem,5vw,4rem);padding-inline:clamp(1.2rem,4vw,3rem)}
.ptitle .lat,.pinfo .lat,.slab-card .meta .lat{text-align:right}
.hero>*{min-width:0}
@media (max-width:900px){.slab-draw .s{height:auto;width:min(calc((100vw - 6rem)/2),190px)}}
.wrap.hero{padding-inline:clamp(1.2rem,4vw,3rem)}