/* ═══════════════════════════════════════════════════════════════
   UniPod Showroom — Interactive sections (Tester 1 index/models)
   1. Showroom hero switcher   2. 3D assembly scroll
   3. Packed↔Camp compare      4. Off-grid calculator
   ═══════════════════════════════════════════════════════════════ */

/* ═══════════ 1 · SHOWROOM HERO (moodboard: Porsche card) ═══════════ */
.showroom {
  position: relative;
  min-height: 100vh;
  background: var(--cream);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--nav-height) + 32px) 0 56px;
}
/* diagonal slash panel (moodboard 3) */
.showroom::before {
  content: "";
  position: absolute;
  top: 0;
  right: -12%;
  width: 46%;
  height: 100%;
  background: linear-gradient(160deg, var(--sand) 0%, var(--parchment) 100%);
  transform: skewX(-14deg);
  pointer-events: none;
}
.showroom__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(24px, 4vw, 64px);
  align-items: center;
}

/* left rail — model list */
.showroom__rail { display: flex; flex-direction: column; gap: 4px; }
.showroom__rail-label {
  font-family: var(--font-spec);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--stone);
  margin-bottom: 14px;
}
.showroom__model-btn {
  position: relative;
  text-align: left;
  padding: 12px 14px 12px 20px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-on-light-sub);
  border-left: 2px solid var(--parchment);
  transition: color var(--duration-sm) var(--ease), border-color var(--duration-sm) var(--ease), padding-left var(--duration-sm) var(--ease);
}
.showroom__model-btn:hover { color: var(--text-on-light); padding-left: 26px; }
.showroom__model-btn.is-active { color: var(--text-on-light); border-left-color: var(--ember); }
.showroom__model-btn.is-active::after {
  content: "";
  position: absolute;
  left: -2px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--ember);
  box-shadow: 0 0 12px var(--ochre-glow);
}
.showroom__model-btn small {
  display: block;
  font-family: var(--font-spec);
  font-size: 9px;
  letter-spacing: 1.5px;
  color: var(--stone);
  margin-top: 2px;
}

/* stage — ghost type + image */
.showroom__stage { position: relative; min-height: 520px; display: flex; flex-direction: column; justify-content: center; }
.showroom__ghost {
  position: absolute;
  top: 4%;
  left: -2%;
  z-index: 0;
}
.showroom__series {
  position: relative;
  z-index: 2;
  font-family: var(--font-spec);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--ember);
}
.showroom__name {
  position: relative;
  z-index: 2;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(44px, 6vw, 88px);
  letter-spacing: -2px;
  line-height: 0.95;
  text-transform: uppercase;
  color: var(--text-on-light);
  margin-top: 8px;
}
.showroom__img-wrap {
  position: relative;
  z-index: 1;
  margin-top: 12px;
  aspect-ratio: 16 / 8.4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--sand);
}
.showroom__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: translateX(40px) scale(1.02);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}
.showroom__img.is-active { opacity: 1; transform: translateX(0) scale(1); }

/* stat strip + actions (moodboard 1 bottom strip) */
.showroom__strip {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, auto) 1fr auto;
  align-items: center;
  gap: clamp(18px, 3vw, 44px);
  margin-top: 26px;
  padding: 22px 28px;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.showroom__stat { border-left: 1px solid var(--parchment); padding-left: clamp(18px, 3vw, 44px); }
.showroom__stat:first-child { border-left: none; padding-left: 0; }
.showroom__stat b {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.5px;
  color: var(--text-on-light);
}
.showroom__stat span {
  display: block;
  font-family: var(--font-spec);
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-on-light-sub);
  margin-top: 3px;
}
.showroom__count {
  justify-self: end;
  font-family: var(--font-spec);
  font-size: 12px;
  color: var(--stone);
  letter-spacing: 2px;
}
.showroom__count b { color: var(--text-on-light); font-size: 20px; font-weight: 500; }

/* prev/next arrows */
.showroom__nav {
  position: absolute;
  z-index: 3;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.showroom__arrow {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-on-light);
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: background var(--duration-sm) var(--ease), color var(--duration-sm) var(--ease), transform var(--duration-sm) var(--ease);
}
.showroom__arrow:hover { background: var(--ember); color: #fff; transform: translateY(-2px); }

/* ═══════════ 2 · 3D ASSEMBLY SCROLL ═══════════ */
.assembly { position: relative; background: var(--void); }
.assembly__track { height: 420vh; position: relative; }
.assembly__viewport {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.assembly__canvas { position: absolute; inset: 0; }
.assembly__canvas canvas { width: 100% !important; height: 100% !important; }
/* ember glow backdrop (moodboard 2) */
.assembly__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 55% at 68% 62%, rgba(228, 86, 10, 0.20) 0%, transparent 60%);
  pointer-events: none;
}
.assembly__head {
  position: absolute;
  top: clamp(80px, 12vh, 130px);
  left: 0;
  right: 0;
  text-align: center;
  z-index: 3;
  pointer-events: none;
  padding: 0 var(--gutter);
}
.assembly__progress {
  position: absolute;
  left: var(--gutter);
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 26px;
}
.assembly__step { display: flex; align-items: center; gap: 14px; opacity: 0.32; transition: opacity 0.4s var(--ease); }
.assembly__step.is-active { opacity: 1; }
.assembly__step-num {
  font-family: var(--font-spec);
  font-size: 11px;
  color: var(--ember);
  letter-spacing: 1px;
}
.assembly__step-lbl {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--cream);
}
.assembly__step-sub {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 12px;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-on-dark-sub);
  margin-top: 2px;
}
.assembly__hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  font-family: var(--font-spec);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--stone);
}
.assembly__fallback {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
}
.assembly__fallback img { max-width: 72%; border-radius: var(--radius-lg); }
.assembly--no-webgl .assembly__fallback { display: flex; }
.assembly--no-webgl .assembly__canvas { display: none; }

/* ═══════════ 3 · PACKED ↔ CAMP COMPARE ═══════════ */
.campmode { background: var(--sand); }
.campmode__frame {
  position: relative;
  margin-top: 48px;
  aspect-ratio: 16 / 8;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  user-select: none;
  touch-action: none;
  cursor: ew-resize;
}
.campmode__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}
.campmode__after-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  clip-path: inset(0 0 0 50%);
  will-change: clip-path;
}
.campmode__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: var(--cream);
  box-shadow: 0 0 20px rgba(0,0,0,0.35);
  will-change: left;
}
.campmode__handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--ember);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 15px;
  box-shadow: var(--shadow-ochre);
  will-change: left;
  pointer-events: none;
}
.campmode__tag {
  position: absolute;
  top: 22px;
  z-index: 2;
  padding: 8px 14px;
  font-family: var(--font-spec);
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--cream);
  background: rgba(14, 13, 11, 0.65);
  backdrop-filter: blur(6px);
  border-radius: 2px;
  pointer-events: none;
}
.campmode__tag--left { left: 22px; }
.campmode__tag--right { right: 22px; }

/* ═══════════ 4 · OFF-GRID CALCULATOR ═══════════ */
.calc { background: var(--void); position: relative; overflow: hidden; }
.calc::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -30%;
  width: 55%;
  height: 120%;
  background: radial-gradient(ellipse at center, rgba(228, 86, 10, 0.13) 0%, transparent 65%);
  pointer-events: none;
}
.calc__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 100px);
  margin-top: 56px;
  position: relative;
  z-index: 2;
}
.calc__controls { display: flex; flex-direction: column; gap: 38px; }
.calc__field label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-spec);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--dust);
  margin-bottom: 14px;
}
.calc__field label output {
  font-size: 15px;
  color: var(--cream);
  letter-spacing: 0;
}
.calc__slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--earth-line);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.calc__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--ember);
  border: 4px solid var(--void);
  box-shadow: 0 0 0 1px var(--ember), 0 4px 14px var(--ochre-glow);
  transition: transform var(--duration-sm) var(--ease);
}
.calc__slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
.calc__slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--ember);
  border: 4px solid var(--void);
  box-shadow: 0 0 0 1px var(--ember);
}
.calc__result {
  background: var(--earth-dark);
  border: 1px solid var(--earth-line);
  border-radius: var(--radius-lg);
  padding: 44px 44px 40px;
  display: flex;
  flex-direction: column;
}
.calc__days {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(72px, 9vw, 128px);
  letter-spacing: -4px;
  line-height: 0.9;
  color: var(--cream);
}
.calc__days em { font-style: normal; color: var(--ember); }
.calc__days-lbl {
  font-family: var(--font-spec);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--dust);
  margin-top: 14px;
}
.calc__bars { margin-top: 34px; display: flex; flex-direction: column; gap: 20px; }
.calc__bar-row { display: grid; grid-template-columns: 90px 1fr 60px; gap: 14px; align-items: center; }
.calc__bar-name {
  font-family: var(--font-spec);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--dust);
}
.calc__bar { height: 6px; background: var(--earth-mid); border-radius: 3px; overflow: hidden; }
.calc__bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--ochre-dark), var(--ember));
  border-radius: 3px;
  transition: width 0.5s var(--ease);
}
.calc__bar-val {
  font-family: var(--font-spec);
  font-size: 11px;
  color: var(--cream);
  text-align: right;
}
.calc__note { font-size: 12px; color: var(--text-on-dark-muted); margin-top: 28px; line-height: 1.6; }

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 1024px) {
  .showroom__inner { grid-template-columns: 1fr; gap: 32px; }
  .showroom__rail { flex-direction: row; flex-wrap: wrap; gap: 8px; }
  .showroom__rail-label { width: 100%; margin-bottom: 4px; }
  .showroom__model-btn { border-left: none; border-bottom: 2px solid var(--parchment); padding: 8px 12px; }
  .showroom__model-btn.is-active { border-bottom-color: var(--ember); }
  .showroom__model-btn.is-active::after { display: none; }
  .showroom__nav { display: none; }
  .assembly__progress { left: 20px; gap: 16px; }
  .assembly__step-sub { display: none; }
  .calc__layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .showroom__strip { grid-template-columns: 1fr 1fr; gap: 18px; padding: 18px 20px; }
  .showroom__stat { border-left: none; padding-left: 0; }
  .showroom__count { display: none; }
  .showroom__img-wrap { aspect-ratio: 4 / 3; }
  .campmode__frame { aspect-ratio: 4 / 3; }
  .assembly__track { height: 320vh; }
  .assembly__progress { flex-direction: row; top: auto; bottom: 64px; transform: none; left: var(--gutter); right: var(--gutter); justify-content: space-between; }
  .assembly__step { flex-direction: column; align-items: flex-start; gap: 4px; }
  .assembly__step-lbl { font-size: 11px; }
}