/* ============================================================
   ASKA — GRIDstore page styles
   The product page: unit detail, block scaling, standards, specs.
   ============================================================ */

/* ---------- navy hero with stats ---------- */
.gs-hero{background:var(--navy);border-bottom:none;padding-bottom:100px}
.gs-hero .page-eyebrow{color:var(--gold-warm)}
.gs-hero .page-eyebrow::before{background:var(--gold-warm)}
.gs-hero .page-title{color:var(--paper)}
.gs-hero .page-title em{color:var(--gold-warm)}
.gs-hero .page-lede{color:rgba(251,248,240,.75)}
.gs-hero .stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
  margin-top:72px;
}
@media(max-width:1000px){.gs-hero .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}}
@media(max-width:600px){.gs-hero .stats-grid{grid-template-columns:1fr}}
.stat{padding-top:24px;border-top:1px solid rgba(251,248,240,.2)}
.stat-num{
  font-family:'Source Serif 4',serif;
  font-weight:300;
  font-size:clamp(30px,3.4vw,44px);
  line-height:1;
  color:var(--gold-warm);
  letter-spacing:-.022em;
  margin-bottom:12px;
}
.stat-label{font-size:14px;line-height:1.5;color:rgba(251,248,240,.82);margin-bottom:10px}
.stat-source{font-size:11px;color:rgba(251,248,240,.45);letter-spacing:.04em;font-style:italic}

/* ---------- value grid ---------- */
.value-section{background:var(--bg);padding:120px 56px;border-top:1px solid var(--line-soft)}
@media(max-width:900px){.value-section{padding:80px 22px}}
.value-inner{max-width:1320px;margin:0 auto}
.value-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:36px 64px;
  margin-top:48px;
}
@media(max-width:900px){.value-grid{grid-template-columns:1fr;gap:28px}}
.value{padding-top:24px;border-top:1px solid var(--line-soft)}
.value-num{
  font-family:'Architects Daughter',cursive;
  color:var(--gold-deep);
  font-size:20px;
  margin-bottom:12px;
}
.value h3{
  font-family:'Source Serif 4',serif;
  font-weight:400;
  font-style:italic;
  font-size:24px;
  color:var(--ink);
  margin-bottom:14px;
  letter-spacing:-.012em;
}
.value p{font-size:15px;line-height:1.65;color:var(--ink-soft)}

/* ============================================================
   THE UNIT — blueprint illustration + headline specs
   ============================================================ */
.unit-section{background:var(--bg-soft);padding:120px 56px;border-top:1px solid var(--line-soft)}
@media(max-width:900px){.unit-section{padding:80px 22px}}
.unit-inner{max-width:1320px;margin:0 auto}

.unit-layout{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:64px;
  align-items:start;
  margin-top:56px;
}
@media(max-width:1000px){.unit-layout{grid-template-columns:1fr;gap:48px}}

.unit-visual{
  background:#fbf8f0;
  border:1px solid var(--line-soft);
  padding:20px;
  position:relative;
}
.unit-visual img{width:100%;height:auto;display:block}

.unit-headline-specs{padding-top:8px}
.uhs-row{
  display:grid;
  grid-template-columns:150px 1fr;
  gap:24px;
  padding:14px 0;
  border-bottom:1px solid var(--line-soft);
  align-items:baseline;
}
.uhs-row:first-of-type{border-top:1px solid var(--line-soft)}
.uhs-k{
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:500;
}
.uhs-v{
  font-family:'Source Serif 4',serif;
  font-weight:400;
  font-size:18px;
  color:var(--ink);
  letter-spacing:-.008em;
}
.uhs-sub{
  font-family:'Inter Tight',sans-serif;
  font-weight:400;
  font-size:13px;
  color:var(--muted);
  font-style:normal;
  margin-left:6px;
  letter-spacing:.01em;
}
.spec-link{
  display:inline-block;
  margin-top:28px;
  font-family:'Source Serif 4',serif;
  font-style:italic;
  font-size:17px;
  color:var(--navy);
  text-decoration:none;
  border-bottom:1px solid rgba(0,33,71,.3);
  padding-bottom:3px;
  transition:all .2s;
}
.spec-link:hover{border-color:var(--navy)}

/* ============================================================
   SCALE BY BLOCK — interactive stage (axonometric + slider unified)
   ============================================================ */
.scale-section{background:var(--bg);padding:120px 56px;border-top:1px solid var(--line-soft)}
@media(max-width:900px){.scale-section{padding:80px 22px}}
.scale-inner{max-width:1320px;margin:0 auto}

/* The sizer: one horizontal band — chips, slider, metrics across */
.sizer-h{margin-top:56px;margin-bottom:40px}

/* Navy metrics panel — the colour anchor of the sizer */
.metrics-panel{
  background:var(--navy);
  padding:36px 34px 32px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:30px 34px;
  margin:40px 0 4px;
}
@media(max-width:1000px){.metrics-panel{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.metrics-panel{grid-template-columns:1fr;gap:24px}}
.m-cell{padding-top:16px;border-top:1px solid rgba(251,248,240,.18)}
.m-tag{
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:rgba(251,248,240,.55);
  font-weight:500;
  margin-bottom:12px;
}
.m-val{
  font-family:'Source Serif 4',serif;
  font-weight:300;
  font-size:clamp(34px,3.4vw,50px);
  line-height:1;
  color:var(--paper);
  letter-spacing:-.022em;
  display:flex;
  align-items:baseline;
  gap:8px;
}
.m-unit{
  font-family:'Inter Tight',sans-serif;
  font-weight:400;
  font-size:15px;
  color:var(--gold-warm);
  letter-spacing:.03em;
}

/* Preset chips — quick-size shortcuts above the slider */
.preset-row{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:32px;
}
.preset-label{
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:500;
  margin-right:6px;
}
.preset-chip{
  font-family:'Inter Tight',sans-serif;
  font-size:13px;
  font-weight:400;
  letter-spacing:.02em;
  color:var(--ink-soft);
  background:transparent;
  border:1px solid var(--line);
  padding:8px 16px;
  border-radius:999px;
  cursor:pointer;
  transition:border-color .2s, color .2s, background .2s;
}
.preset-chip:hover{border-color:var(--navy);color:var(--navy)}
.preset-chip.active{
  border-color:var(--navy);
  background:var(--navy);
  color:var(--paper);
}

.slider-controls{position:relative;margin-bottom:36px}
.slider-labels{
  display:flex;
  justify-content:space-between;
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:500;
  margin-bottom:16px;
}
.sl-min,.sl-max{font-family:'Inter Tight',sans-serif}

#blockSlider{
  -webkit-appearance:none;
  appearance:none;
  width:100%;
  height:2px;
  background:var(--line);
  outline:none;
  border-radius:1px;
  margin:0;
  cursor:grab;
}
#blockSlider:active{cursor:grabbing}
#blockSlider::-webkit-slider-thumb{
  -webkit-appearance:none;
  appearance:none;
  width:22px;
  height:22px;
  background:var(--navy);
  border:2px solid var(--paper);
  border-radius:50%;
  cursor:grab;
  box-shadow:0 2px 8px rgba(0,33,71,.25);
  transition:transform .15s;
}
#blockSlider::-moz-range-thumb{
  width:22px;
  height:22px;
  background:var(--navy);
  border:2px solid var(--paper);
  border-radius:50%;
  cursor:grab;
  box-shadow:0 2px 8px rgba(0,33,71,.25);
}
#blockSlider:hover::-webkit-slider-thumb{transform:scale(1.1)}
#blockSlider:hover::-moz-range-thumb{transform:scale(1.1)}

.slider-tick-row{
  display:flex;
  justify-content:space-between;
  margin-top:8px;
  padding:0 2px;
}
.tick{
  width:14px;
  height:26px;
  position:relative;
  cursor:pointer;
}
.tick i{
  position:absolute;
  top:12px;
  left:50%;
  transform:translateX(-50%);
  font-size:9.5px;
  font-style:normal;
  color:var(--muted);
  letter-spacing:.02em;
  white-space:nowrap;
  font-family:'Inter Tight',sans-serif;
}
.tick:hover i{color:var(--navy)}
@media(max-width:680px){
  .tick i{display:none}
  .tick[data-i="0"] i,.tick[data-i="3"] i,.tick[data-i="7"] i,.tick[data-i="8"] i{display:block}
}
.tick::after{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  width:1px;
  height:6px;
  background:var(--line);
  transition:background .2s, height .2s;
}
.tick:hover::after{background:var(--navy);height:9px}
.tick[data-i="0"]::after,.tick[data-i="5"]::after,.tick[data-i="8"]::after{background:var(--muted)}

.slider-readout{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:40px;
  margin-bottom:20px;
}
@media(max-width:700px){.slider-readout{gap:28px}}

.sr-hero{padding-top:20px;border-top:1px solid var(--line-soft)}
.sr-tag{
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:500;
  margin-bottom:12px;
}
.sr-val{
  font-family:'Source Serif 4',serif;
  font-weight:300;
  line-height:1;
  color:var(--navy);
  letter-spacing:-.022em;
  display:flex;
  align-items:baseline;
  gap:8px;
}
.sr-val-hero{
  font-size:clamp(44px,5.6vw,72px);
}
.sr-unit{
  font-family:'Inter Tight',sans-serif;
  font-weight:400;
  font-size:16px;
  color:var(--muted);
  letter-spacing:.02em;
}

.sr-subtext{
  font-family:'Inter Tight',sans-serif;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--muted);
  padding:20px 0 24px;
  transition:opacity .2s;
  font-style:italic;
}

.slider-context{
  font-family:'Source Serif 4',serif;
  font-style:italic;
  font-weight:300;
  font-size:17px;
  color:var(--ink-soft);
  line-height:1.5;
  padding-top:24px;
  border-top:1px dashed var(--line);
  transition:opacity .2s;
}

/* Fallback plan-view reference below the interactive stage */
.scale-visual{
  background:var(--paper);
  border:1px solid var(--line-soft);
  padding:32px;
  margin-bottom:36px;
}
.scale-visual img{width:100%;height:auto;display:block}
.scale-visual-caption{
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:500;
  margin-top:16px;
  padding-left:4px;
}

.scale-note{
  background:transparent;
  padding:24px 32px;
  border-left:2px solid var(--gold);
}
.scale-note p{
  font-family:'Source Serif 4',serif;
  font-weight:300;
  font-style:normal;
  font-size:17px;
  line-height:1.55;
  color:var(--ink-soft);
  max-width:820px;
}
.scale-note em{font-style:italic;color:var(--ink);font-weight:400}

/* ============================================================
   STANDARDS & COMPLIANCE
   ============================================================ */
.standards-section{background:linear-gradient(180deg,#efe9d6 0%,#ece4cd 100%);padding:120px 56px;border-top:2px solid var(--gold)}
@media(max-width:900px){.standards-section{padding:80px 22px}}
.standards-inner{max-width:1320px;margin:0 auto}

.standards-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:56px;
  margin-top:56px;
}
@media(max-width:900px){.standards-grid{grid-template-columns:1fr;gap:40px}}

.std-group-title{
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gold-deep);
  font-weight:500;
  margin-bottom:20px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.std-item{padding:16px 0;border-bottom:1px solid var(--line-soft)}
.std-item:last-child{border-bottom:none;padding-bottom:0}
.std-code{
  font-family:'Source Serif 4',serif;
  font-weight:400;
  font-size:18px;
  color:var(--navy);
  letter-spacing:-.008em;
  margin-bottom:6px;
}
.std-desc{font-size:14px;line-height:1.55;color:var(--ink-soft)}

/* ============================================================
   FULL SPEC — expandable groups
   ============================================================ */
.fullspec-section{background:var(--paper);padding:120px 56px;border-top:1px solid var(--line-soft)}
@media(max-width:900px){.fullspec-section{padding:80px 22px}}
.fullspec-inner{max-width:1000px;margin:0 auto}

.spec-groups{margin-top:48px}
.spec-group{
  border-top:1px solid var(--line);
  padding:0;
}
.spec-group:last-child{border-bottom:1px solid var(--line)}
.spec-group summary{
  padding:24px 4px;
  font-family:'Source Serif 4',serif;
  font-weight:400;
  font-size:20px;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  letter-spacing:-.008em;
  transition:color .2s;
}
.spec-group summary::-webkit-details-marker{display:none}
.spec-group summary:hover{color:var(--navy)}
.spec-group summary::after{
  content:"+";
  font-family:'Inter Tight',sans-serif;
  font-weight:300;
  font-size:26px;
  color:var(--gold-deep);
  transition:transform .25s;
  line-height:1;
}
.spec-group[open] summary::after{content:"−"}

.spec-rows{padding:0 4px 28px}
.spec-row{
  display:grid;
  grid-template-columns:1fr 1.4fr;
  gap:24px;
  padding:11px 0;
  border-bottom:1px solid var(--line-soft);
  align-items:baseline;
  font-size:14.5px;
}
.spec-row:last-child{border-bottom:none}
.sk{color:var(--muted);letter-spacing:.02em}
.sv{color:var(--ink);font-weight:500}

/* ============================================================
   PATHWAY POINTER
   ============================================================ */
.pathway-cta{background:var(--bg);padding:120px 56px;border-top:1px solid var(--line-soft);text-align:center}
@media(max-width:900px){.pathway-cta{padding:80px 22px}}
.pathway-inner{max-width:880px;margin:0 auto}
.pathway-cta h2{
  font-family:'Source Serif 4',serif;
  font-weight:300;
  font-size:clamp(28px,3.4vw,42px);
  line-height:1.1;
  letter-spacing:-.018em;
  color:var(--ink);
  margin-bottom:20px;
}
.pathway-cta h2 em{color:var(--navy);font-style:italic;font-weight:400}
.pathway-cta p{font-size:16px;color:var(--ink-soft);max-width:600px;margin:0 auto 36px;line-height:1.65}
.pathway-cta a.link{
  font-family:'Source Serif 4',serif;
  font-style:italic;
  font-size:22px;
  color:var(--navy);
  text-decoration:none;
  border-bottom:1px solid rgba(0,33,71,.3);
  padding-bottom:4px;
  transition:all .2s;
}
.pathway-cta a.link:hover{border-color:var(--navy)}


/* Standards items inside collapsible groups */
.std-rows .std-item{padding:16px 0;border-bottom:1px solid var(--line-soft)}
.std-rows .std-item:last-child{border-bottom:none}