/* =========================================================
   SIGNATURE FEATURE STYLES
   ========================================================= */

/* ---------- FEATURE 1: Color & Design Visualizer ---------- */
.viz{
  background:var(--ink);border-radius:var(--radius-lg);overflow:hidden;
  display:grid;grid-template-columns:1fr 1.15fr;border:1px solid rgba(241,238,230,.1);
}
@media(max-width:900px){.viz{grid-template-columns:1fr}}

.viz-controls{padding:40px 38px;color:#fff}
.viz-steps{display:flex;gap:6px;margin-bottom:30px}
.viz-step-dot{flex:1;height:3px;background:rgba(241,238,230,.15);border-radius:2px;position:relative;overflow:hidden}
.viz-step-dot::after{content:'';position:absolute;inset:0;background:var(--rust);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.viz-step-dot.done::after,.viz-step-dot.active::after{transform:scaleX(1)}

.viz-step{display:none}
.viz-step.active{display:block;animation:vizIn .45s var(--ease)}
@keyframes vizIn{from{opacity:0;transform:translateX(10px)}to{opacity:1;transform:translateX(0)}}
.viz-step h4{color:var(--safety);font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px;font-weight:600}
.viz-step h3{color:#fff;font-size:22px;margin-bottom:20px}

.viz-option-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.viz-opt{
  padding:13px 14px;border:1px solid rgba(241,238,230,.18);border-radius:var(--radius);
  color:rgba(241,238,230,.85);font-size:13.5px;text-align:left;background:rgba(241,238,230,.03);
  transition:.2s;
}
.viz-opt:hover{border-color:rgba(241,238,230,.4)}
.viz-opt.sel{border-color:var(--rust);background:rgba(208,80,28,.15);color:#fff}

.viz-color-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.viz-color{display:flex;flex-direction:column;align-items:center;gap:7px;background:none;border:none;padding:4px}
.viz-swatch{width:100%;aspect-ratio:1;border-radius:50%;border:2px solid transparent;transition:.2s;position:relative}
.viz-color.sel .viz-swatch{border-color:var(--safety);transform:scale(1.08)}
.viz-color span{font-family:'IBM Plex Mono',monospace;font-size:10px;color:rgba(241,238,230,.6);text-align:center}
.viz-color.sel span{color:#fff}

.viz-surface-select select{
  width:100%;padding:14px;background:rgba(241,238,230,.05);border:1px solid rgba(241,238,230,.18);
  color:#fff;border-radius:var(--radius);font-family:'Inter',sans-serif;font-size:14.5px;
}
.viz-calc{display:flex;gap:10px;align-items:flex-end;margin-bottom:10px}
.viz-calc .field{flex:1;margin:0}
.viz-calc input{background:rgba(241,238,230,.05);border-color:rgba(241,238,230,.18);color:#fff}
.viz-calc select{padding:13px 10px;background:rgba(241,238,230,.05);border:1px solid rgba(241,238,230,.18);color:#fff;border-radius:var(--radius)}
.viz-result{
  margin-top:18px;padding:18px;background:rgba(241,238,230,.05);border-left:2px solid var(--rust);border-radius:2px;
}
.viz-result .row{display:flex;justify-content:space-between;padding:6px 0;font-size:13.5px;color:rgba(241,238,230,.8)}
.viz-result .row b{color:#fff;font-family:'IBM Plex Mono',monospace}

.viz-nav{display:flex;justify-content:space-between;margin-top:28px;gap:12px}

.viz-summary{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.viz-summary .row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid rgba(241,238,230,.1);font-size:13.5px}
.viz-summary .row span:first-child{color:rgba(241,238,230,.55);font-family:'IBM Plex Mono',monospace;font-size:11.5px;text-transform:uppercase;letter-spacing:.05em}
.viz-summary .row span:last-child{color:#fff;font-weight:500}

/* preview pane */
.viz-preview{position:relative;background:var(--paper-deep);overflow:hidden;min-height:420px}
.viz-preview-surface{
  position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(90deg, var(--pv-color,#B9B2A1) 0 38px, rgba(0,0,0,.08) 38px 40px),
    repeating-linear-gradient(0deg, transparent 0 18px, rgba(0,0,0,.05) 18px 20px);
  transition:background-image .4s;
}
.viz-preview-surface.pattern-herringbone{
  background-image:
    linear-gradient(45deg, var(--pv-color,#B9B2A1) 25%, transparent 25%),
    linear-gradient(-45deg, var(--pv-color,#B9B2A1) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(0,0,0,.06) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(0,0,0,.06) 75%);
  background-size:44px 44px;background-position:0 0,0 22px,22px -22px,-22px 0;
}
.viz-preview-surface.pattern-stack{
  background-image:repeating-linear-gradient(90deg, var(--pv-color,#B9B2A1) 0 60px, rgba(0,0,0,.08) 60px 62px),
    repeating-linear-gradient(0deg, transparent 0 30px, rgba(0,0,0,.05) 30px 32px);
}
.viz-preview-label{
  position:absolute;top:18px;left:18px;background:rgba(21,24,27,.85);color:#fff;
  padding:8px 14px;border-radius:20px;font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.05em;text-transform:uppercase;
}
.viz-preview-badge{
  position:absolute;bottom:18px;left:18px;right:18px;background:rgba(255,255,255,.92);backdrop-filter:blur(6px);
  border-radius:var(--radius);padding:14px 16px;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;
}
.viz-preview-badge .p{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink-45);text-transform:uppercase;letter-spacing:.04em}
.viz-preview-badge .v{font-weight:700;font-size:14.5px;color:var(--ink)}

/* ---------- FEATURE 2: Precision Cutaway / Hotspot Diagram ---------- */
.cutaway-wrap{
  position:relative;background:var(--panel);border:1px solid var(--line-soft);border-radius:var(--radius-lg);
  padding:40px 20px;overflow:hidden;
}
.cutaway-wrap .blueprint-grid{position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(203,194,172,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(203,194,172,.5) 1px,transparent 1px);
  background-size:36px 36px;
}
.cutaway-svg{position:relative;z-index:1;width:100%;height:auto;display:block;margin:0 auto;max-width:820px}
.hotspot{cursor:pointer}
.hotspot circle.pulse-ring{fill:none;stroke:var(--rust);stroke-width:1.5;opacity:.6;transform-origin:center;animation:hspulse 2.6s ease-out infinite}
.hotspot:nth-child(2) circle.pulse-ring{animation-delay:.4s}
.hotspot:nth-child(3) circle.pulse-ring{animation-delay:.8s}
.hotspot:nth-child(4) circle.pulse-ring{animation-delay:1.2s}
@keyframes hspulse{0%{transform:scale(.5);opacity:.7}100%{transform:scale(2.4);opacity:0}}
.hotspot circle.core{fill:var(--rust);stroke:#fff;stroke-width:2}
.hotspot:hover circle.core,.hotspot.active circle.core{fill:var(--teal)}

.hs-tooltip{
  position:absolute;max-width:250px;background:var(--ink);color:#fff;padding:16px 18px;border-radius:var(--radius);
  font-size:13px;line-height:1.5;box-shadow:var(--shadow-lift);z-index:5;opacity:0;pointer-events:none;
  transition:opacity .25s var(--ease), transform .25s var(--ease);transform:translateY(8px);
}
.hs-tooltip.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.hs-tooltip .t{font-family:'IBM Plex Mono',monospace;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--safety);margin-bottom:6px;display:block}
.hs-hint{text-align:center;margin-top:22px;font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.04em;color:var(--ink-45);text-transform:uppercase}
.stress-line{stroke:var(--teal);stroke-width:1.4;fill:none;stroke-dasharray:6 5;opacity:.55;animation:stressflow 3s linear infinite}
@keyframes stressflow{to{stroke-dashoffset:-22}}

/* ---------- FEATURE 3: Timeline / Scrollytelling ---------- */
.tl-wrap{display:grid;grid-template-columns:0.85fr 1.15fr;gap:60px;align-items:start}
@media(max-width:900px){.tl-wrap{grid-template-columns:1fr;gap:36px}}
.tl-rail{position:relative;padding-left:30px}
.tl-rail::before{content:'';position:absolute;left:5px;top:6px;bottom:6px;width:1px;background:rgba(241,238,230,.18)}
.tl-item{position:relative;padding-bottom:52px;cursor:pointer}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:'';position:absolute;left:-30px;top:4px;width:11px;height:11px;border-radius:50%;
  background:var(--ink);border:2px solid rgba(241,238,230,.3);transition:.3s;
}
.tl-item.active::before{background:var(--rust);border-color:var(--rust);box-shadow:0 0 0 4px rgba(208,80,28,.25)}
.tl-year{font-family:'IBM Plex Mono',monospace;color:var(--safety);font-size:13px;letter-spacing:.06em;margin-bottom:6px;opacity:.6;transition:.3s}
.tl-item.active .tl-year{opacity:1}
.tl-item h4{color:#fff;font-size:19px;margin-bottom:8px;opacity:.45;transition:.3s}
.tl-item.active h4{opacity:1}
.tl-item p{color:rgba(241,238,230,.55);font-size:14px;margin:0;max-width:44ch;opacity:0;max-height:0;overflow:hidden;transition:opacity .35s,max-height .35s}
.tl-item.active p{opacity:1;max-height:100px}

.tl-media{position:sticky;top:120px;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:4/3;background:#000}
.tl-media-slide{position:absolute;inset:0;opacity:0;transition:opacity .6s var(--ease);}
.tl-media-slide.active{opacity:1}
.tl-media-slide img,.tl-media-slide video{width:100%;height:100%;object-fit:cover}
.tl-media-cap{position:absolute;bottom:0;left:0;right:0;padding:20px;background:linear-gradient(0deg,rgba(0,0,0,.75),transparent);color:#fff;font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.04em}

/* ---------- Testimonial carousel ---------- */
.tcarousel{overflow:hidden;position:relative}
.tcarousel-track{display:flex;gap:24px;transition:transform .6s var(--ease)}
.tcard{
  flex:0 0 min(400px,85vw);background:var(--panel);border:1px solid var(--line-soft);border-radius:var(--radius-lg);
  padding:28px 26px;display:flex;flex-direction:column;gap:16px;
}
.tcard .stars{color:var(--safety);letter-spacing:2px;font-size:14px}
.tcard .quote{font-size:15px;color:var(--ink-70);line-height:1.6;flex:1}
.tcard .who{display:flex;gap:12px;align-items:center;border-top:1px solid var(--line-soft);padding-top:14px}
.tcard .who img{width:44px;height:44px;border-radius:50%;object-fit:cover;flex:none}
.tcard .who .n{font-weight:600;font-size:14px}
.tcard .who .r{font-size:12.5px;color:var(--ink-45)}
.tcarousel-nav{display:flex;gap:10px;margin-top:26px;justify-content:flex-end}
.tcarousel-nav button{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:transparent;display:flex;align-items:center;justify-content:center}
.tcarousel-nav button:hover{border-color:var(--ink)}
.tcarousel-nav svg{width:16px;height:16px}

/* ---------- FAQ ---------- */
.faq-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:34px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--panel);overflow:hidden}
.faq-q{width:100%;text-align:left;padding:20px 22px;display:flex;justify-content:space-between;align-items:center;gap:14px;background:none;border:none;font-weight:600;font-size:15.5px}
.faq-q .plus{width:22px;height:22px;flex:none;position:relative}
.faq-q .plus::before,.faq-q .plus::after{content:'';position:absolute;background:var(--rust);top:50%;left:50%;transform:translate(-50%,-50%)}
.faq-q .plus::before{width:14px;height:2px}
.faq-q .plus::after{width:2px;height:14px;transition:transform .3s}
.faq-item.open .plus::after{transform:translate(-50%,-50%) rotate(90deg) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a p{padding:0 22px 22px;color:var(--ink-70);margin:0;font-size:14.5px;max-width:70ch}
.faq-panel{display:none}
.faq-panel.active{display:block}

/* ---------- gallery lightbox ---------- */
.gallery-item{position:relative;aspect-ratio:4/3;overflow:hidden;border-radius:var(--radius);cursor:pointer}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.gallery-item:hover img{transform:scale(1.08)}
.gallery-item .gcap{position:absolute;inset:0;background:linear-gradient(0deg,rgba(15,18,20,.8),transparent 55%);
  display:flex;align-items:flex-end;padding:16px;opacity:0;transition:opacity .3s}
.gallery-item:hover .gcap{opacity:1}
.gallery-item .gcap div span{display:block}
.gallery-item .gcap .gt{color:#fff;font-weight:600;font-size:14px}
.gallery-item .gcap .gl{color:rgba(255,255,255,.7);font-family:'IBM Plex Mono',monospace;font-size:11px;text-transform:uppercase;letter-spacing:.04em}
.lightbox{position:fixed;inset:0;background:rgba(10,12,13,.94);z-index:1100;display:none;align-items:center;justify-content:center;padding:40px}
.lightbox.show{display:flex}
.lightbox img{max-width:90vw;max-height:82vh;object-fit:contain;border-radius:2px}
.lightbox-cap{position:absolute;bottom:34px;left:0;right:0;text-align:center;color:#fff;font-family:'IBM Plex Mono',monospace;font-size:13px}
.lightbox-close{position:absolute;top:26px;right:30px;color:#fff;background:none;border:1px solid rgba(255,255,255,.4);width:42px;height:42px;border-radius:50%}
.lightbox-nav{position:absolute;top:50%;transform:translateY(-50%);color:#fff;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.25);width:48px;height:48px;border-radius:50%}
.lightbox-nav.prev{left:24px}.lightbox-nav.next{right:24px}

/* ---------- misc sections ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:34px}}
.spec-table{width:100%;border-collapse:collapse}
.spec-table th,.spec-table td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line-soft);font-size:14px}
.spec-table th{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-45);font-weight:500}
.spec-table td{color:var(--ink-70)}
.spec-table tr:last-child td{border-bottom:none}
.table-scroll{overflow-x:auto;border:1px solid var(--line-soft);border-radius:var(--radius-lg);background:var(--panel)}
.table-scroll .spec-table{min-width:560px}
.table-scroll .spec-table th,.table-scroll .spec-table td{padding:14px 20px}

.color-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
@media(max-width:768px){.color-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:480px){.color-grid{grid-template-columns:repeat(3,1fr)}}
.color-chip{display:flex;flex-direction:column;align-items:center;gap:8px;background:none;border:none;padding:4px}
.color-chip .sw{width:100%;aspect-ratio:1;border-radius:50%;border:2px solid var(--line-soft);box-shadow:inset 0 2px 4px rgba(0,0,0,.15)}
.color-chip span{font-family:'IBM Plex Mono',monospace;font-size:10.5px;color:var(--ink-70);text-align:center}
.color-chip.active .sw{border-color:var(--rust);transform:scale(1.06)}

.crosssell-track{display:flex;gap:20px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory}
.crosssell-track .product-card{flex:0 0 260px;scroll-snap-align:start}