/* KORALI catalogue pages — "the architect's binder".
   Loaded after style.css; inherits :root tokens (--bg, --brand, --accent,
   --serif, --sans, --mono). Signature: mono file-tab product codes +
   a sticky table-of-contents rail with real counts. */

:root{
  --paper:#fffefb;
  --rule:rgba(31,58,46,.16);
  --rule-soft:rgba(31,58,46,.09);
}

/* ---------- page scaffolding ---------- */
.kat-body{background:var(--bg)}
.kat-main{max-width:var(--max);margin:0 auto;padding:0 1.5rem}

/* ---------- hero ---------- */
.kat-hero{background:var(--brand);color:#f3efe6;padding:9.5rem 1.5rem 4.5rem;position:relative;overflow:hidden}
.kat-hero-inner{max-width:var(--max);margin:0 auto;position:relative;z-index:1}
.kat-hero .eyebrow{color:var(--accent);letter-spacing:.22em;text-transform:uppercase;font-size:.78rem;font-weight:600;display:block;margin-bottom:1.1rem}
.kat-hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(2.4rem,5.4vw,4.4rem);line-height:1.02;letter-spacing:-.02em;max-width:14em}
.kat-hero h1 em{font-style:italic;color:var(--accent)}
.kat-hero-lead{max-width:58ch;color:rgba(243,239,230,.78);font-size:1.04rem;line-height:1.7;margin-top:1.6rem}
.kat-hero-meta{display:flex;flex-wrap:wrap;gap:2.4rem;margin-top:2.6rem;padding-top:1.6rem;border-top:1px solid rgba(243,239,230,.18)}
.kat-hero-meta div{display:flex;flex-direction:column;gap:.25rem}
.kat-hero-meta strong{font-family:var(--mono);font-weight:500;font-size:1.35rem;color:var(--accent)}
.kat-hero-meta span{font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:rgba(243,239,230,.6)}
.kat-hero-img{position:absolute;inset:0;z-index:0}
.kat-hero-img img{width:100%;height:100%;object-fit:cover;opacity:.26;filter:saturate(.85)}
.kat-hero-img::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,var(--brand) 30%,rgba(31,58,46,.55))}

/* hero actions */
.kat-actions{display:flex;gap:.9rem;flex-wrap:wrap;margin-top:2.2rem}
.kat-actions .btn-pdf{display:inline-flex;align-items:center;gap:.55rem;border:1px solid rgba(243,239,230,.35);color:#f3efe6;border-radius:999px;padding:.7rem 1.3rem;font-size:.9rem;transition:background .25s var(--t),border-color .25s var(--t)}
.kat-actions .btn-pdf:hover{background:rgba(243,239,230,.1);border-color:rgba(243,239,230,.6)}
.kat-actions .btn-other{display:inline-flex;align-items:center;gap:.55rem;color:rgba(243,239,230,.65);padding:.7rem .4rem;font-size:.9rem}
.kat-actions .btn-other:hover{color:#f3efe6}

/* ---------- top bar ---------- */
.kat-nav-current{font-family:var(--mono);font-size:.78rem;color:var(--muted);letter-spacing:.04em}

/* ---------- language toggle (page-level) ---------- */
.kat-lang{display:inline-flex;border:1px solid var(--rule);border-radius:999px;overflow:hidden;background:var(--paper)}
.kat-lang button{padding:.42rem 1rem;font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;color:var(--muted);transition:background .2s,color .2s}
.kat-lang button.active{background:var(--brand);color:#fff}

/* ---------- layout: TOC rail + content ---------- */
.kat-layout{display:grid;grid-template-columns:240px 1fr;gap:3.5rem;align-items:start;padding:3.5rem 0 5rem}
.kat-toc{position:sticky;top:96px}
.kat-toc-h{font-size:.75rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:1rem;padding-bottom:.7rem;border-bottom:1px solid var(--rule)}
.kat-toc a{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;padding:.5rem .6rem .5rem 0;color:var(--ink-2);font-size:.92rem;border-left:2px solid transparent;padding-left:.7rem;margin-left:-.7rem;transition:color .2s,border-color .2s,background .2s}
.kat-toc a small{font-family:var(--mono);font-size:.72rem;color:var(--muted)}
.kat-toc a:hover{color:var(--ink)}
.kat-toc a.active{color:var(--brand);border-left-color:var(--accent);font-weight:600;background:linear-gradient(90deg,rgba(201,169,107,.08),transparent)}
.kat-toc-pdf{margin-top:1.4rem;padding-top:1.1rem;border-top:1px solid var(--rule)}
.kat-toc-pdf a{display:inline-flex;align-items:center;gap:.5rem;font-size:.85rem;color:var(--brand);border-left:0;margin-left:0;padding-left:0}
.kat-toc-pdf a:hover{color:var(--brand-2)}

/* ---------- category sections ---------- */
.kat-section{padding:2.2rem 0 1.4rem;scroll-margin-top:90px}
.kat-section + .kat-section{border-top:1px solid var(--rule-soft);margin-top:2.2rem}
.kat-section-head{max-width:64ch;margin-bottom:2rem}
.kat-section-head h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.8rem,3.4vw,2.6rem);letter-spacing:-.015em;line-height:1.08;display:flex;align-items:baseline;gap:1rem}
.kat-section-head h2 small{font-family:var(--mono);font-size:.85rem;color:var(--accent-2);font-weight:500;letter-spacing:.04em}
.kat-section-head p{color:var(--muted);line-height:1.7;font-size:.98rem;margin-top:.9rem}

/* ---------- product cards: the file-tab ---------- */
.kat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem 1.3rem}
.kat-card{position:relative;background:var(--paper);border:1px solid var(--rule-soft);border-radius:0 var(--radius) var(--radius) var(--radius);cursor:pointer;transition:transform .3s var(--t),box-shadow .3s var(--t),border-color .3s var(--t);margin-top:1.5rem}
.kat-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(14,15,13,.09);border-color:var(--rule)}
.kat-card:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.kat-tab{position:absolute;top:-1.45rem;left:-1px;display:inline-flex;align-items:center;background:var(--brand);color:#f3efe6;font-family:var(--mono);font-weight:500;font-size:.72rem;letter-spacing:.05em;padding:.36rem .8rem;border-radius:6px 6px 0 0;max-width:92%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:background .25s var(--t)}
.kat-card:hover .kat-tab{background:var(--brand-2)}
.kat-card-img{aspect-ratio:4/3;overflow:hidden;border-radius:0 var(--radius) 0 0;background:#fff;display:grid;place-items:center}
.kat-card-img img{width:100%;height:100%;object-fit:contain;padding:1.1rem;transition:transform .45s var(--t)}
.kat-card:hover .kat-card-img img{transform:scale(1.045)}
.kat-card-body{padding:.9rem 1.1rem 1.05rem;border-top:1px solid var(--rule-soft);display:flex;align-items:center;justify-content:space-between;gap:.8rem}
.kat-card-body p{font-size:.9rem;color:var(--ink-2);line-height:1.45}
.kat-card-more{flex:0 0 auto;color:var(--accent-2);font-size:1.05rem;transition:transform .25s var(--t)}
.kat-card:hover .kat-card-more{transform:translateX(4px)}

/* staggered reveal */
@media (prefers-reduced-motion:no-preference){
  .kat-card.reveal{opacity:0;transform:translateY(14px)}
  .kat-card.reveal.in{opacity:1;transform:none;transition:opacity .5s var(--t),transform .5s var(--t)}
  .kat-card.reveal.in:hover{transform:translateY(-4px)}
}

/* ---------- underground: model dossiers ---------- */
.kat-sheet{display:grid;grid-template-columns:1.05fr 1fr;gap:0;background:var(--paper);border:1px solid var(--rule-soft);border-radius:0 var(--radius-lg) var(--radius-lg) var(--radius-lg);margin:2.6rem 0 0;position:relative}
.kat-sheet .kat-tab{font-size:.8rem;padding:.45rem 1rem}
.kat-sheet-media{background:#fff;border-radius:0 0 0 var(--radius-lg);display:flex;flex-direction:column;gap:.7rem;padding:1.6rem;justify-content:center}
.kat-sheet-media .main{width:100%;aspect-ratio:4/3;object-fit:contain}
.kat-sheet-thumbs{display:flex;gap:.6rem;flex-wrap:wrap}
.kat-sheet-thumbs img{width:62px;height:48px;object-fit:cover;border-radius:6px;cursor:pointer;opacity:.55;border:2px solid transparent;transition:opacity .2s,border-color .2s}
.kat-sheet-thumbs img.active,.kat-sheet-thumbs img:hover{opacity:1;border-color:var(--accent)}
.kat-sheet-info{padding:2.2rem 2.2rem 2.4rem;border-left:1px solid var(--rule-soft)}
.kat-sheet-info h3{font-family:var(--serif);font-weight:400;font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.1;letter-spacing:-.01em}
.kat-sheet-info .kat-desc{color:var(--muted);line-height:1.7;font-size:.95rem;margin-top:1rem}
.kat-sheet:nth-of-type(even){grid-template-columns:1fr 1.05fr}
.kat-sheet:nth-of-type(even) .kat-sheet-media{order:2;border-radius:0 0 var(--radius-lg) 0}
.kat-sheet:nth-of-type(even) .kat-sheet-info{order:1;border-left:0;border-right:1px solid var(--rule-soft)}

/* spec table (shared look with modal, denser) */
.kat-specs{border-collapse:collapse;width:100%;font-size:.9rem;margin-top:1.4rem}
.kat-specs caption{text-align:left;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-2);font-weight:600;padding-bottom:.55rem}
.kat-specs tr{border-bottom:1px solid var(--rule-soft)}
.kat-specs tr:first-child{border-top:1px solid var(--rule)}
.kat-specs th{text-align:left;padding:.55rem 1rem .55rem 0;color:var(--ink-2);font-weight:500;white-space:nowrap;vertical-align:top}
.kat-specs td{padding:.55rem 0;color:var(--ink);font-family:var(--mono);font-size:.84rem}

/* ---------- comparison matrix ---------- */
.kat-matrix-wrap{overflow-x:auto;margin-top:2.4rem;border:1px solid var(--rule-soft);border-radius:var(--radius);background:var(--paper)}
.kat-matrix{border-collapse:collapse;width:100%;min-width:640px;font-size:.9rem}
.kat-matrix th,.kat-matrix td{padding:.85rem 1.2rem;text-align:left;border-bottom:1px solid var(--rule-soft)}
.kat-matrix thead th{font-family:var(--mono);font-weight:500;font-size:.78rem;letter-spacing:.03em;color:#f3efe6;background:var(--brand);white-space:nowrap}
.kat-matrix thead th:first-child{background:var(--brand);color:rgba(243,239,230,.55);font-family:var(--sans);text-transform:uppercase;letter-spacing:.14em;font-size:.7rem}
.kat-matrix tbody th{font-weight:500;color:var(--ink-2);white-space:nowrap}
.kat-matrix tbody td{font-family:var(--mono);font-size:.85rem;color:var(--ink)}
.kat-matrix tbody tr:nth-child(odd){background:rgba(31,58,46,.025)}
.kat-matrix tbody tr:last-child th,.kat-matrix tbody tr:last-child td{border-bottom:0}

/* ---------- install gallery strip ---------- */
.kat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:2.2rem}
.kat-strip figure{border-radius:var(--radius);overflow:hidden;background:#1a1b18;position:relative}
.kat-strip .kat-tab{position:absolute;top:.6rem;left:.6rem;border-radius:6px;z-index:2}
.kat-strip img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform .6s var(--t)}
.kat-strip figure:hover img{transform:scale(1.05)}
.kat-strip figcaption{padding:.7rem 1rem;font-size:.82rem;color:rgba(243,239,230,.8);background:#1a1b18}

/* ---------- closing CTA ---------- */
.kat-cta{background:var(--brand);border-radius:var(--radius-lg);color:#f3efe6;padding:3.2rem;display:flex;align-items:center;justify-content:space-between;gap:2rem;flex-wrap:wrap;margin:4rem 0 5rem}
.kat-cta h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.7rem,3vw,2.4rem);letter-spacing:-.015em;max-width:18em}
.kat-cta h2 em{font-style:italic;color:var(--accent)}
.kat-cta .btn-primary{background:var(--accent);color:var(--ink);border-radius:999px;padding:.95rem 1.7rem;font-weight:600;font-size:.95rem;display:inline-flex;align-items:center;gap:.5rem;transition:transform .25s var(--t),background .25s var(--t)}
.kat-cta .btn-primary:hover{background:var(--accent-2);transform:translateY(-2px)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .kat-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .kat-layout{grid-template-columns:1fr;gap:0}
  .kat-toc{position:sticky;top:58px;z-index:30;background:rgba(250,248,244,.95);backdrop-filter:blur(10px);display:flex;gap:.2rem;overflow-x:auto;padding:.6rem .2rem;margin:0 -1.5rem;padding-left:1.5rem;border-bottom:1px solid var(--rule-soft);scrollbar-width:none}
  .kat-toc::-webkit-scrollbar{display:none}
  .kat-toc-h,.kat-toc-pdf{display:none}
  .kat-toc a{flex:0 0 auto;border:1px solid var(--rule-soft);border-radius:999px;padding:.45rem .95rem;margin-left:0;font-size:.85rem;background:var(--paper)}
  .kat-toc a.active{background:var(--brand);color:#fff;border-color:var(--brand)}
  .kat-toc a small{display:none}
  .kat-sheet,.kat-sheet:nth-of-type(even){grid-template-columns:1fr}
  .kat-sheet:nth-of-type(even) .kat-sheet-media{order:0;border-radius:0}
  .kat-sheet:nth-of-type(even) .kat-sheet-info{order:1;border-right:0}
  .kat-sheet-info{border-left:0;border-top:1px solid var(--rule-soft);padding:1.6rem 1.4rem 1.9rem}
  .kat-strip{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .kat-grid{grid-template-columns:1fr 1fr;gap:1.6rem .8rem}
  .kat-card-body{padding:.7rem .8rem .8rem}
  .kat-card-body p{font-size:.8rem}
  .kat-tab{font-size:.66rem;max-width:96%}
  .kat-hero{padding:7.5rem 1.5rem 3.2rem}
  .kat-strip{grid-template-columns:1fr}
  .kat-cta{padding:2.2rem;margin:3rem 0}
}
@media (max-width:420px){
  .kat-grid{grid-template-columns:1fr}
}