/* ============================================================
   studio.INTERVAL — Website v2 · "Swiss minimal"
   Self-contained. v1 untouched. Black on white, one typeface,
   the dot is the only recurring accent.
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --bg:#ffffff;
  --ink:#111111;
  --ink-2:#444444;
  --grey:#8a8a8a;
  --grey-2:#b4b4b4;
  --line:#e4e4e4;
  --line-2:#efefef;
  --accent:#C8612B;            /* used only on the dot + hover */
  --font:"Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, Menlo, monospace;
  --margin:clamp(20px, 4vw, 64px);
  --gap:clamp(16px, 2vw, 30px);
  --maxw:1700px;
}

*{ box-sizing:border-box; }
html{ -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; }

/* mono accents: nav, view-switch labels, project numbers */
.v2 .hdr nav a{ font-family:var(--mono); font-size:12px; letter-spacing:0.02em; }
.v2 .tile__t .no{ font-family:var(--mono); font-size:12px; letter-spacing:0.03em; }
body.v2{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--font); font-size:15px; line-height:1.5;
  letter-spacing:-0.006em; font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body.v2 a{ color:inherit; text-decoration:none; }
body.v2 img{ display:block; max-width:100%; }
::selection{ background:var(--ink); color:var(--bg); }

.dot{ color:var(--accent); }

/* ---------- layout ---------- */
.v2 .wrap{ max-width:var(--maxw); margin:0 auto; padding-inline:var(--margin); }
.v2 .pad-top{ padding-top:96px; }
.v2 section{ padding-block:clamp(40px,6vw,96px); }

/* ---------- header ---------- */
.v2 .hdr{
  position:fixed; inset:0 0 auto 0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:18px var(--margin);
}
/* bar blur lives on a pseudo-element, NOT the header itself — otherwise the
   header would be a "backdrop root" and the burger dropdown (a header child)
   could only blur the empty header area instead of the real page behind it. */
.v2 .hdr::before{
  content:""; position:absolute; inset:0; z-index:-1;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter:blur(8px); backdrop-filter:blur(8px);
}
.v2 .hdr__brand{ font-size:16px; font-weight:500; letter-spacing:-0.02em; }
.v2 .hdr__tools{ display:flex; align-items:center; gap:22px; }
.v2 .hdr nav{ display:flex; gap:28px; }
.v2 .hdr nav a{ font-size:14px; color:var(--ink-2); transition:color .18s; position:relative; }
/* brackets are absolutely placed OUTSIDE the text box, so they never
   reflow the label or reorder the nav — they only fade in/out */
.v2 .hdr nav a::before,
.v2 .hdr nav a::after{
  position:absolute; top:0; color:var(--accent); opacity:0;
  transition:opacity .16s ease; pointer-events:none; font-weight:400;
}
.v2 .hdr nav a::before{ content:"["; right:100%; margin-right:3px; }
.v2 .hdr nav a::after{ content:"]"; left:100%; margin-left:3px; }
.v2 .hdr nav a:hover{ color:var(--ink); }
.v2 .hdr nav a:hover::before, .v2 .hdr nav a:hover::after,
.v2 .hdr nav a:active::before, .v2 .hdr nav a:active::after,
.v2 .hdr nav a[aria-current="page"]::before,
.v2 .hdr nav a[aria-current="page"]::after{ opacity:1; }
.v2 .hdr nav a[aria-current="page"]{ color:var(--ink); }

/* ---------- mobile: hamburger + dropdown nav ---------- */
.hdr__burger{ display:none; }
@media(max-width:640px){
  .v2 .hdr{ position:fixed; }
  .hdr__burger{
    display:flex; flex-direction:column; justify-content:center; gap:4px;
    width:28px; height:26px; padding:7px; margin:-7px;
    background:none; border:none; cursor:pointer;
  }
  .hdr__burger span{ display:block; height:1.5px; width:100%; background:var(--ink);
    transition:transform .24s ease, opacity .2s ease; transform-origin:center; }
  .v2 .hdr.nav-open .hdr__burger span:nth-child(1){ transform:translateY(5.5px) rotate(45deg); }
  .v2 .hdr.nav-open .hdr__burger span:nth-child(2){ opacity:0; }
  .v2 .hdr.nav-open .hdr__burger span:nth-child(3){ transform:translateY(-5.5px) rotate(-45deg); }

  /* dropdown matches the Projekte search suggestion popup exactly, + soft radius */
  .v2 .hdr nav[data-tabs]{
    position:absolute; top:100%; right:var(--margin); left:auto; min-width:190px;
    flex-direction:column; gap:0; align-items:stretch;
    background:color-mix(in srgb,var(--bg) 78%, transparent);
    -webkit-backdrop-filter:blur(14px) saturate(1.4); backdrop-filter:blur(14px) saturate(1.4);
    border:1px solid var(--line-2);
    box-shadow:0 16px 40px rgba(0,0,0,.10);
    border-radius:10px; overflow:hidden;
    padding:5px 0; margin-top:10px;
    opacity:0; transform:translateY(-8px); pointer-events:none;
    transition:opacity .2s ease, transform .22s cubic-bezier(.2,.7,.2,1);
  }
  .v2 .hdr.nav-open nav[data-tabs]{ opacity:1; transform:none; pointer-events:auto; }
  .v2 .hdr nav[data-tabs] a{ display:block; font-family:var(--mono); font-size:12.5px;
    letter-spacing:0.02em; padding:10px 16px; color:var(--ink-2); transition:color .15s; }
  .v2 .hdr nav[data-tabs] a:hover,
  .v2 .hdr nav[data-tabs] a[aria-current="page"]{ color:var(--accent); }
  /* brackets don't belong in the stacked dropdown */
  .v2 .hdr nav[data-tabs] a::before,
  .v2 .hdr nav[data-tabs] a::after{ display:none; }
}

/* ---------- page-swipe transition ---------- */
/* only the page CONTENT slides L/R — the fixed header stays put */
.v2 .pg-swipe-anim{ transition:transform .46s cubic-bezier(.5,.05,.15,1), opacity .46s ease; will-change:transform,opacity; }

/* ---------- bilingual flag toggle (top-left, tiny, monochrome) ---------- */
.si-lang{ position:fixed; top:14px; left:16px; z-index:80;
  display:inline-flex; align-items:center; gap:6px; line-height:0;
  background:none; border:none; cursor:pointer; color:var(--ink-2); padding:4px; opacity:.55;
  transition:opacity .2s, color .2s; }
.si-lang:hover{ opacity:1; color:var(--accent); }
.si-lang svg{ width:19px; height:13px; display:block; }
.si-lang__t{ font-family:var(--mono); font-size:10px; letter-spacing:0.08em; }
@media(max-width:640px){
  /* phones: leave the top-left corner, join the header flow directly left of the burger */
  .si-lang{ position:static; top:auto; left:auto; z-index:auto; opacity:.7; }
  .si-lang__t{ display:none; }
}
.v2.lay-center .hdr{ flex-direction:column; gap:12px; align-items:center; }
.v2.lay-center .hdr nav{ justify-content:center; }
.v2.lay-center .proj-head__row{ justify-content:center; }
.v2.lay-center [data-bigtitle]{ display:none; }
.v2.lay-center .vtools{ width:100%; justify-content:center; }
.v2.lay-center .vswitch{ justify-content:center; }
/* centered: the search is the LAST element but the whole row stays centred
   (drop the margin-left:auto that pushes it right in the left-aligned layout) */
.v2.lay-center .si-search--flow{ margin-left:0; }
.v2.lay-center .proj-sub{ justify-content:center; text-align:center; }
.v2.lay-center main.wrap{ padding-top:132px; }

/* ---------- mobile overrides (win by source order) ---------- */
@media(max-width:640px){
  /* even in 'zentriert', the header is a normal row: brand left, burger right */
  .v2.lay-center .hdr{ flex-direction:row; gap:0; align-items:center; justify-content:space-between; }
  .v2.lay-center .hdr nav{ justify-content:flex-end; }
  .v2.lay-center main.wrap{ padding-top:96px; }
  /* graph + 3D space + the 3D-model toggle don't belong on a small screen */
  .vswitch [data-view-btn="graph"],
  .vswitch [data-view-btn="raum"],
  #modelsToggle{ display:none; }
}
/* centered: no gap between nav row and view-switch */
.v2.lay-center .proj-head{ padding-top:0; }
.v2.lay-center .proj-head__row{ margin-top:0; }

/* layout switch button (corner, next to version switch) */
.v2 .lay-switch{ position:fixed; right:16px; bottom:46px; z-index:60; font-size:12px; color:var(--grey);
  background:color-mix(in srgb,var(--bg) 86%, transparent); -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
  border:1px solid var(--line); padding:6px 11px; cursor:pointer; }
.v2 .lay-switch:hover{ color:var(--ink); border-color:var(--ink); }
.v2 .lay-switch b{ color:var(--ink); font-weight:500; }

/* ---------- type ---------- */
.v2 .intro{
  font-size:clamp(22px, 2.7vw, 40px); font-weight:400; line-height:1.18;
  letter-spacing:-0.02em; max-width:24ch; text-wrap:balance;
}
.v2 .intro b{ font-weight:500; }
.v2 .lead{ font-size:clamp(17px,1.5vw,21px); line-height:1.4; letter-spacing:-0.012em; max-width:46ch; }
.v2 .body{ font-size:15px; line-height:1.6; color:var(--ink-2); max-width:60ch; }
.v2 .h2{ font-size:clamp(18px,1.7vw,22px); font-weight:500; letter-spacing:-0.015em; margin:0; }
.v2 .label{ font-size:13px; color:var(--grey); font-weight:400; }
.v2 .num{ font-variant-numeric:tabular-nums; }

/* rule */
.v2 .rule{ border:0; border-top:1px solid var(--line); margin:0; }

/* ---------- intro row (landing) ---------- */
.v2 .opener{ display:grid; grid-template-columns:repeat(12,1fr); gap:var(--gap); align-items:end; }
.v2 .opener__intro{ grid-column:1 / 8; }
.v2 .opener__meta{ grid-column:9 / 13; }
@media(max-width:820px){ .v2 .opener__intro,.v2 .opener__meta{ grid-column:1/-1; } .v2 .opener__meta{ margin-top:18px; } }

/* ---------- work grid ---------- */
.v2 .work-head{ display:flex; justify-content:space-between; align-items:baseline; margin-bottom:22px; }
.v2 .grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:var(--gap) var(--gap); }
.v2 .grid--3{ grid-template-columns:repeat(3,1fr); }
@media(max-width:820px){ .v2 .grid,.v2 .grid--3{ grid-template-columns:1fr; } }

.v2 .tile{ display:block; }
.v2 .tile__img{ position:relative; aspect-ratio:3/2; overflow:hidden; background:#fafafa; }
.v2 .tile__img img{ width:100%; height:100%; object-fit:cover; transition:transform .6s cubic-bezier(.2,.7,.2,1); }
.v2 .tile:hover .tile__img img{ transform:scale(1.03); }
.v2 .tile__cap{ display:flex; justify-content:space-between; gap:14px; margin-top:11px; align-items:baseline; opacity:0; transition:opacity .28s ease; }
.v2 .tile:hover .tile__cap,
.v2 .tile:focus-visible .tile__cap{ opacity:1; }
.v2 .tile__t{ font-size:15px; font-weight:500; letter-spacing:-0.012em; }
.v2 .tile__t .no{ color:var(--grey); font-weight:400; margin-right:9px; }
.v2 .tile:hover .tile__t{ color:var(--accent); }
.v2 .tile__m{ display:none; }
.v2 .tile--wide{ grid-column:1 / -1; }
.v2 .tile--wide .tile__img{ aspect-ratio:16/7; }

/* ---------- index list ---------- */
.v2 .ix{ border-top:1px solid var(--ink); }
.v2 .ix__row{ display:grid; grid-template-columns:54px 1fr 1.1fr 0.8fr 24px; gap:var(--gap);
  align-items:center; padding:17px 0; border-bottom:1px solid var(--line); transition:padding .3s cubic-bezier(.2,.7,.2,1); }
.v2 .ix__row:hover{ padding-left:14px; }
.v2 .ix__no{ font-size:13px; color:var(--grey); }
.v2 .ix__t{ font-size:clamp(16px,1.5vw,19px); font-weight:500; letter-spacing:-0.015em; }
.v2 .ix__row:hover .ix__t{ color:var(--accent); }
.v2 .ix__m{ font-size:13px; color:var(--grey); }
.v2 .ix__a{ text-align:right; color:var(--grey-2); transition:transform .3s,color .2s; }
.v2 .ix__row:hover .ix__a{ color:var(--accent); transform:translateX(4px); }
@media(max-width:760px){
  .v2 .ix__row{ grid-template-columns:40px 1fr 24px; }
  .v2 .ix__m{ display:none; }
}

/* ---------- footer (compact) ---------- */
.v2 .ft{ border-top:1px solid var(--ink); padding-block:22px 26px; }
.v2 .ft__row{ display:flex; align-items:baseline; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.v2 .ft__brand{ font-size:16px; font-weight:600; letter-spacing:-0.02em; color:var(--ink); }
.v2 .ft__brand .dot{ color:var(--accent); }
.v2 .ft__nav{ display:flex; gap:26px; flex-wrap:wrap; }
.v2 .ft__nav a{ font-size:13.5px; color:var(--ink-2); letter-spacing:-0.005em; }
.v2 .ft__nav a:hover{ color:var(--accent); }
.v2 .ft__base{ display:flex; justify-content:space-between; margin-top:16px; padding-top:14px; border-top:1px solid var(--line); font-family:var(--mono); font-size:11px; letter-spacing:0.03em; color:var(--grey); flex-wrap:wrap; gap:10px 24px; }
@media(max-width:820px){ .v2 .ft__row{ flex-direction:column; gap:14px; } .v2 .ft__nav{ gap:18px; } }

/* ---------- reveal (declarative) ---------- */
.v2 .rv{ opacity:1; }
@media (prefers-reduced-motion:no-preference){
  @supports (animation-timeline:view()){
    .v2 .rv{ animation:v2rise linear both; animation-timeline:view(); animation-range:entry 2% entry 30%; }
  }
}
@keyframes v2rise{ from{ opacity:0; transform:translateY(14px); } to{ opacity:1; transform:none; } }

/* ---------- version switch (tiny, corner) ---------- */
.v2 .ver-switch{ position:fixed; right:16px; bottom:14px; z-index:60; font-size:12px; color:var(--grey);
  background:color-mix(in srgb,var(--bg) 86%, transparent); -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
  border:1px solid var(--line); padding:6px 11px; }
.v2 .ver-switch a{ color:var(--ink); }
.v2 .ver-switch a:hover{ color:var(--accent); }

/* ---------- project detail ---------- */
.v2 .pd-top{ display:grid; grid-template-columns:repeat(12,1fr); gap:var(--gap); align-items:end; }
.v2 .pd-title{ grid-column:1 / 9; font-size:clamp(28px,4vw,56px); font-weight:500; letter-spacing:-0.03em; line-height:1; }
.v2 .pd-title .no{ display:block; font-size:14px; color:var(--grey); font-weight:400; letter-spacing:0; margin-bottom:16px; }
.v2 .pd-unter{ grid-column:10 / 13; font-size:15px; color:var(--ink-2); line-height:1.45; }
@media(max-width:820px){ .v2 .pd-title,.v2 .pd-unter{ grid-column:1/-1; } .v2 .pd-unter{ margin-top:10px; } }

.v2 .pd-meta{ display:grid; grid-template-columns:repeat(6,1fr); gap:var(--gap); border-top:1px solid var(--ink);
  border-bottom:1px solid var(--line); padding:18px 0; margin-top:34px; }
.v2 .pd-meta div{ }
.v2 .pd-meta dt{ font-size:12px; color:var(--grey); margin-bottom:5px; }
.v2 .pd-meta dd{ margin:0; font-size:15px; font-weight:500; letter-spacing:-0.01em; }
@media(max-width:760px){ .v2 .pd-meta{ grid-template-columns:repeat(2,1fr); row-gap:16px; } }

.v2 .pd-text{ display:grid; grid-template-columns:repeat(12,1fr); gap:var(--gap); margin-top:40px; }
.v2 .pd-text .lead{ grid-column:1 / 7; }
.v2 .pd-text .body{ grid-column:8 / 12; }
@media(max-width:820px){ .v2 .pd-text .lead,.v2 .pd-text .body{ grid-column:1/-1; } }

.v2 .pd-figs{ display:flex; flex-direction:column; gap:var(--gap); margin-top:54px; }
.v2 .pd-fig img{ width:100%; height:auto; background:#f2f1ee; }
.v2 .pd-fig.plan img{ background:#fafafa; }
.v2 .pd-fig figcaption{ font-size:13px; color:var(--grey); margin-top:9px; display:flex; justify-content:space-between; }
.v2 .pd-figrow{ display:grid; grid-template-columns:1fr 1fr; gap:var(--gap); }
@media(max-width:760px){ .v2 .pd-figrow{ grid-template-columns:1fr; } }

.v2 .pd-next{ border-top:1px solid var(--ink); margin-top:64px; padding-top:30px; display:flex;
  justify-content:space-between; align-items:center; gap:20px; }
.v2 .pd-next .l{ font-size:13px; color:var(--grey); }
.v2 .pd-next a{ font-size:clamp(22px,3vw,40px); font-weight:500; letter-spacing:-0.025em; transition:color .2s,transform .3s; display:inline-flex; gap:14px; align-items:center; }
.v2 .pd-next a:hover{ color:var(--accent); transform:translateX(6px); }

/* ---------- studio page ---------- */
.v2 .st-intro{ display:grid; grid-template-columns:repeat(12,1fr); gap:var(--gap); }
.v2 .st-intro .big{ grid-column:1 / 9; font-size:clamp(24px,3vw,44px); font-weight:400; letter-spacing:-0.025em; line-height:1.16; text-wrap:balance; }
.v2 .st-intro .big b{ font-weight:500; }
@media(max-width:820px){ .v2 .st-intro .big{ grid-column:1/-1; } }
.v2 .st-cols{ display:grid; grid-template-columns:repeat(12,1fr); gap:var(--gap); margin-top:10px; }
.v2 .st-cols .c{ grid-column:span 4; }
@media(max-width:820px){ .v2 .st-cols .c{ grid-column:span 12; } }
.v2 .st-cols .c b{ display:block; font-size:13px; color:var(--grey); font-weight:400; margin-bottom:10px; border-top:1px solid var(--ink); padding-top:10px; }
.v2 .st-list{ display:flex; flex-direction:column; }
.v2 .st-list .r{ display:flex; justify-content:space-between; gap:14px; padding:9px 0; border-bottom:1px solid var(--line); font-size:14px; }
.v2 .st-list .r span:last-child{ color:var(--grey); text-align:right; }