/* Motor Atlas responsive enhancement layer
   Preserves the existing blue-hour design, branding and content.
   This file is intentionally loaded after style.css/views.css so it can
   correct fixed sizing and overflow without rewriting the original theme. */

/* ---------- 1. Global responsive safety ---------- */
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  overflow-x:clip;
}
body{
  min-width:0;
  overflow-x:hidden;
}
main,header,footer,section,article,div,nav,form,dialog{
  min-width:0;
}
img,picture,video,canvas,svg{
  display:block;
  max-width:100%;
  height:auto;
}
iframe{
  max-width:100%;
}
button,a,input,select,summary{
  -webkit-tap-highlight-color:transparent;
}
button,input,select,a[role="button"]{
  min-height:2.75rem;
}
input,select,textarea{
  max-width:100%;
}

/* ---------- 2. Fluid page shell and typography ---------- */
header{
  width:100%;
  height:auto;
  min-height:4.75rem;
  padding-inline:clamp(1rem,4.5vw,4.5rem);
  gap:clamp(.75rem,2vw,1.6rem);
  position:relative;
  z-index:50;
  transition:padding .2s ease,gap .2s ease;
}
main{
  width:min(100%,96rem);
  max-width:96rem;
  padding-inline:clamp(1rem,4.5vw,4.5rem);
  overflow:visible;
  transition:padding .2s ease;
}
.intro{
  padding-block:clamp(1.75rem,4vw,2.8rem);
  gap:clamp(1rem,4vw,2rem);
}
h1{
  font-size:clamp(2.35rem,7vw,4.125rem);
  overflow-wrap:anywhere;
}
.section-title h2,.method h2{
  font-size:clamp(1.8rem,5vw,2.35rem);
}
.card h2{
  font-size:clamp(1.65rem,4.8vw,2rem);
  overflow-wrap:anywhere;
}
.detailhero h2{
  font-size:clamp(2rem,6vw,2.8rem);
  overflow-wrap:anywhere;
}
body,p,input,select,button{
  font-size:clamp(.875rem,1.8vw,1rem);
}

/* ---------- 3. Mobile-first header/navigation ---------- */
.mobile-menu-toggle{
  display:inline-flex;
  width:2.75rem;
  height:2.75rem;
  min-width:2.75rem;
  padding:.62rem;
  margin-left:auto;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:.27rem;
  border:1px solid var(--border);
  border-radius:.45rem;
  background:#0c1928d9;
  color:#fff;
  z-index:52;
}
.mobile-menu-toggle span{
  width:1.25rem;
  height:2px;
  min-height:0;
  border-radius:99px;
  background:currentColor;
  transition:transform .22s ease,opacity .18s ease;
}
header.nav-open .mobile-menu-toggle span:nth-child(1){transform:translateY(.34rem) rotate(45deg)}
header.nav-open .mobile-menu-toggle span:nth-child(2){opacity:0}
header.nav-open .mobile-menu-toggle span:nth-child(3){transform:translateY(-.34rem) rotate(-45deg)}
header nav{
  position:absolute;
  top:calc(100% + .5rem);
  left:clamp(1rem,4.5vw,4.5rem);
  right:clamp(1rem,4.5vw,4.5rem);
  display:flex;
  flex-direction:column;
  gap:.25rem;
  padding:.65rem;
  border:1px solid var(--border);
  border-radius:.7rem;
  background:#071422f5;
  box-shadow:0 1.2rem 3rem #0008;
  backdrop-filter:blur(16px);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(-.5rem);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
header.nav-open nav{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translateY(0);
}
header nav a,header nav button{
  display:flex!important;
  width:100%;
  min-height:2.75rem;
  align-items:center;
  justify-content:flex-start;
  padding:.72rem .9rem;
  border-radius:.4rem;
  font-size:.9rem;
  text-align:left;
}
header nav a:hover,header nav button:hover{
  background:#12304a;
}
.regional{display:none}
.brand{
  min-width:0;
  font-size:clamp(.78rem,3vw,1.05rem);
  gap:clamp(.45rem,2vw,.8rem);
  white-space:nowrap;
}
.brand .edition{display:none}

/* ---------- 4. Forms, filters and touch controls ---------- */
.toolbar,
.trim-controls{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:.75rem;
}
.search,.selectlabel{
  width:100%;
  min-width:0!important;
}
.search{
  padding-inline:clamp(.75rem,3vw,1.125rem);
}
.search input,input{
  min-height:2.75rem;
  padding-block:.75rem;
}
.selectlabel{
  padding:.55rem .8rem;
}
select{
  min-height:2.3rem;
}
.collection-switch,.tabs,.viewer-tabs{
  max-width:100%;
  overflow-x:auto;
  overflow-y:hidden;
  overscroll-behavior-inline:contain;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
}
.collection-switch button,.tabs button,.viewer-tabs button{
  flex:0 0 auto;
  min-height:2.75rem;
}
.filterline{
  display:block;
  margin-top:clamp(1rem,4vw,1.7rem);
}
#count{
  display:block;
  margin:.65rem 0 0;
  padding-bottom:.75rem;
  white-space:normal;
}
.scope{
  overflow-wrap:anywhere;
}

/* ---------- 5. Responsive car, family and BMW grids ---------- */
.grid,
.family-grid,
.ma-bmw-grid{
  grid-template-columns:minmax(0,1fr)!important;
  gap:clamp(1rem,3vw,1.5rem)!important;
}
.card,.family,.ma-bmw-card{
  width:100%;
  max-width:100%;
}
.photo{
  height:auto!important;
  aspect-ratio:16/9;
}
.photo img,.photo-open img{
  width:100%;
  height:100%!important;
  object-fit:cover;
}
.family img{
  width:100%;
  height:auto!important;
  aspect-ratio:16/9;
  object-fit:cover;
}
.cardbody{
  padding:clamp(1rem,4vw,1.35rem);
}
.specstrip{
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(.4rem,2vw,.75rem);
}
.specstrip>*{
  min-width:0;
  overflow-wrap:anywhere;
}
.cardactions{
  flex-wrap:wrap;
  gap:.65rem;
}
.cardactions .view{
  min-height:2.75rem;
}
.compare{
  min-height:2.75rem;
  padding:.25rem 0;
}
.compare input{
  width:1.15rem;
  height:1.15rem;
  min-height:0;
}

/* ---------- 6. JDM trim catalogue and specification tables ---------- */
.section-title{
  flex-direction:column;
  align-items:flex-start;
  gap:.45rem;
}
.trim-panel{
  width:100%;
  padding:clamp(.85rem,3vw,1.4rem);
  overflow:hidden;
}
.trim-heading{
  align-items:flex-start;
  flex-wrap:wrap;
  gap:.6rem;
}
.tablewrap{
  width:100%;
  max-width:100%;
  overflow-x:auto;
  overscroll-behavior-inline:contain;
  -webkit-overflow-scrolling:touch;
}
.tablewrap table{
  width:100%;
  min-width:max-content;
}
.trim-pages{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:.65rem;
}
.trim-pages button{
  min-height:2.75rem;
}

/* ---------- 7. Dialogs, details, comparison and 3D viewer ---------- */
dialog,.ma-bmw-dialog{
  width:min(58rem,calc(100vw - 1rem))!important;
  max-width:calc(100vw - 1rem)!important;
  max-height:calc(100dvh - 1rem)!important;
  margin:auto;
  overflow:auto;
}
.dialogtop{
  padding:clamp(.7rem,3vw,1rem) clamp(.85rem,4vw,1.6rem);
}
#dialogContent{
  padding:clamp(.9rem,4vw,1.65rem);
}
.detailhero,.specsections{
  grid-template-columns:minmax(0,1fr)!important;
  gap:clamp(1rem,3vw,1.5rem);
}
.detailhero img,.detail-photo img{
  width:100%;
  height:auto!important;
  aspect-ratio:16/9;
  object-fit:cover;
}
dl>div,.ma-bmw dl>div,.ma-bmw-dialog dl>div{
  min-width:0;
  overflow-wrap:anywhere;
}
dd{
  max-width:58%;
  overflow-wrap:anywhere;
}
.vehicle-viewer{
  width:100%;
  max-width:100%;
}
.viewer-heading{
  display:block;
  padding:clamp(.9rem,3vw,1.35rem);
}
.viewer-heading>span{
  display:block;
  margin-top:.45rem;
}
.vehicle-stage iframe{
  width:100%;
  height:auto!important;
  aspect-ratio:16/10;
  min-height:16rem;
}
.comparebar{
  width:min(40rem,calc(100vw - 1rem));
  max-width:calc(100vw - 1rem);
  bottom:max(.5rem,env(safe-area-inset-bottom));
  padding:.75rem;
  gap:.5rem;
  flex-wrap:wrap;
}
.comparebar>div:last-child{
  display:flex;
  gap:.45rem;
  margin-left:auto;
}

/* ---------- 8. Footer and safe-area spacing ---------- */
footer{
  margin-bottom:clamp(4rem,12vw,6.25rem);
  padding-top:clamp(1rem,3vw,1.6rem);
  flex-direction:column;
  align-items:flex-start;
  gap:.75rem;
  overflow-wrap:anywhere;
}
.empty{
  padding:clamp(2.5rem,10vw,4.5rem) 1rem;
}
.quick-download{
  right:max(.75rem,env(safe-area-inset-right))!important;
  bottom:max(.75rem,env(safe-area-inset-bottom))!important;
}

/* ---------- 9. BMW add-on responsive integration ---------- */
.ma-bmw{
  width:100%;
  max-width:100%!important;
  margin:clamp(2rem,6vw,3.5rem) auto;
  padding:clamp(1rem,4vw,1.75rem)!important;
}
.ma-bmw-heading{
  display:block!important;
}
.ma-bmw-controls{
  grid-template-columns:minmax(0,1fr)!important;
  gap:.75rem!important;
}
.ma-bmw-image img{
  width:100%;
  height:auto!important;
  aspect-ratio:16/9;
  object-fit:cover;
}
.ma-bmw-card-body{
  padding:clamp(1rem,4vw,1.2rem);
}
.ma-bmw-card h3{
  font-size:clamp(1.45rem,5vw,1.65rem);
}
.ma-bmw-detail-photo{
  width:100%;
  max-height:none!important;
  height:auto!important;
  object-fit:contain;
}

/* ---------- 10. Small phones: 320px–479px ---------- */
@media (max-width:29.99rem){
  header{
    min-height:4.25rem;
    padding-inline:.8rem;
  }
  main{
    padding-inline:.8rem;
  }
  header nav{
    left:.8rem;
    right:.8rem;
  }
  .mark{font-size:1.65rem}
  .intro p{font-size:.86rem}
  .index-note{display:none}
  .specstrip{
    grid-template-columns:1fr;
  }
  .specstrip>div{
    padding:.35rem 0;
  }
  .family-grid{
    grid-template-columns:1fr!important;
  }
  dl>div,.ma-bmw dl>div,.ma-bmw-dialog dl>div{
    display:grid;
    grid-template-columns:1fr;
    gap:.25rem;
  }
  dd{
    max-width:100%;
    text-align:left;
  }
  .comparebar span{display:none}
  .comparebar>div:last-child{width:100%;margin-left:0}
  .comparebar button{flex:1}
}

/* ---------- 11. Larger phones: 480px–767px ---------- */
@media (min-width:30rem) and (max-width:47.99rem){
  .toolbar{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .toolbar .search{
    grid-column:1/-1;
  }
  .trim-controls{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .trim-controls .search{
    grid-column:1/-1;
  }
  .family-grid{
    grid-template-columns:repeat(2,minmax(0,1fr))!important;
  }
}

/* ---------- 12. Tablets: 768px–1024px ---------- */
@media (min-width:48rem) and (max-width:64rem){
  .mobile-menu-toggle{display:none}
  header nav{
    position:static;
    width:auto;
    margin-left:auto;
    padding:0;
    border:0;
    border-radius:0;
    background:transparent;
    box-shadow:none;
    backdrop-filter:none;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
    flex-direction:row;
    align-items:center;
    gap:clamp(.55rem,2vw,1.2rem);
  }
  header nav a,header nav button{
    width:auto;
    min-height:2.75rem;
    padding:.55rem .35rem;
    justify-content:center;
    white-space:nowrap;
    font-size:.78rem;
  }
  .grid,.ma-bmw-grid{
    grid-template-columns:repeat(2,minmax(0,1fr))!important;
  }
  .family-grid{
    grid-template-columns:repeat(2,minmax(0,1fr))!important;
  }
  .toolbar{
    grid-template-columns:minmax(0,2fr) minmax(10rem,1fr) minmax(10rem,1fr);
  }
  .trim-controls,.ma-bmw-controls{
    grid-template-columns:repeat(2,minmax(0,1fr))!important;
  }
  .detailhero,.specsections{
    grid-template-columns:repeat(2,minmax(0,1fr))!important;
  }
  footer{
    flex-direction:row;
    flex-wrap:wrap;
    align-items:center;
  }
}

/* ---------- 13. Desktop/laptop: 1025px+ ---------- */
@media (min-width:64.01rem){
  .mobile-menu-toggle{display:none}
  header nav{
    position:static;
    width:auto;
    margin-left:auto;
    padding:0;
    border:0;
    border-radius:0;
    background:transparent;
    box-shadow:none;
    backdrop-filter:none;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
    flex-direction:row;
    align-items:center;
    gap:clamp(1rem,2vw,1.9rem);
  }
  header nav a,header nav button{
    width:auto;
    min-height:2.75rem;
    padding:.4rem 0;
    justify-content:center;
    white-space:nowrap;
    font-size:.875rem;
  }
  .regional{display:inline}
  .brand .edition{display:inline-block}
  .grid,.ma-bmw-grid{
    grid-template-columns:repeat(3,minmax(0,1fr))!important;
  }
  .family-grid{
    grid-template-columns:repeat(4,minmax(0,1fr))!important;
  }
  .toolbar{
    display:flex;
  }
  .toolbar .search{flex:1 1 24rem}
  .toolbar .selectlabel{flex:0 1 13rem}
  .trim-controls{
    grid-template-columns:minmax(15rem,2fr) repeat(3,minmax(9rem,1fr));
  }
  .ma-bmw-controls{
    grid-template-columns:2fr 1fr 1fr 1fr!important;
  }
  .detailhero,.specsections{
    grid-template-columns:repeat(2,minmax(0,1fr))!important;
  }
  .section-title{
    flex-direction:row;
    align-items:flex-end;
  }
  footer{
    flex-direction:row;
    align-items:center;
  }
}

/* ---------- 14. Landscape phones/tablets ---------- */
@media (orientation:landscape) and (max-width:64rem){
  .intro{
    padding-block:1.1rem;
  }
  h1{
    font-size:clamp(2rem,7vh,3.3rem);
  }
  header.nav-open nav{
    max-height:calc(100dvh - 5rem);
    overflow-y:auto;
  }
  .vehicle-stage iframe{
    min-height:14rem;
    max-height:72dvh;
  }
  dialog,.ma-bmw-dialog{
    max-height:96dvh!important;
  }
}
@media (orientation:landscape) and (min-width:37.5rem) and (max-width:47.99rem){
  .grid,.ma-bmw-grid,.family-grid{
    grid-template-columns:repeat(2,minmax(0,1fr))!important;
  }
}

/* ---------- 15. Motion and resizing ---------- */
@media (prefers-reduced-motion:no-preference){
  .grid,.family-grid,.toolbar,.trim-controls,.ma-bmw-grid,.ma-bmw-controls,
  .card,.family,.ma-bmw-card,main,header{
    transition:gap .2s ease,padding .2s ease,grid-template-columns .2s ease;
  }
}
@media (prefers-reduced-motion:reduce){
  .mobile-menu-toggle span{transition:none}
}