/* ═══════════════════════════════════════════════════
   HELVESTA Immobilien AG – Design System v6.3
   ═══════════════════════════════════════════════════ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --dark:#1D2222;--light:#EEEEEF;--mid:#3A3F3F;--subtle:#D8D8D9;--muted:#6B7070;--hover:#2A3030;--accent:#8B7355;
  --content:88rem;--narrow:52rem;--text:44rem;
  --gutter:clamp(1rem,2vw + .45rem,2.5rem);
  --header-height-mobile:5rem;--header-height-desktop:6rem;
  --ease-out-expo:cubic-bezier(.16,1,.3,1);--ease-out-quint:cubic-bezier(.22,1,.36,1);
  --font-display:'Playfair Display',Georgia,'Times New Roman',serif;
  --font-body:'DM Sans',system-ui,-apple-system,sans-serif;
}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:var(--font-body);color:#1D2222;background:#fff;min-height:100vh;display:flex;flex-direction:column;line-height:1.7;font-size:clamp(17px,.28vw + 16px,19px);overflow-x:hidden;width:100%;max-width:100vw}

/* ── Typography ── */
.display{font-family:var(--font-display);font-size:clamp(2.75rem,5.5vw,5rem);font-weight:400;letter-spacing:-0.02em;line-height:1.1}
.display em,.display i{font-style:italic}
.display-sm{font-family:var(--font-display);font-size:clamp(2rem,3.5vw,3.25rem);font-weight:400;letter-spacing:-0.015em;line-height:1.15}
.display-sm em,.display-sm i{font-style:italic}
.h1{font-family:var(--font-display);font-size:clamp(1.75rem,2.5vw,2.25rem);font-weight:400;letter-spacing:-0.015em;line-height:1.2}
.h2{font-family:var(--font-display);font-size:1.75rem;font-weight:400;letter-spacing:-0.01em;line-height:1.25}
.h3{font-family:var(--font-body);font-size:1.25rem;font-weight:500;letter-spacing:-0.01em;line-height:1.3}
.body-lg{font-size:clamp(1.125rem,.35vw + 1rem,1.3rem);font-weight:400;line-height:1.75}
.body{font-size:clamp(1rem,.18vw + .97rem,1.08rem);font-weight:400;line-height:1.72}
.body-sm{font-size:clamp(0.92rem,.12vw + .88rem,1rem);font-weight:400;line-height:1.62}
.overline{font-family:var(--font-body);font-size:0.75rem;font-weight:500;letter-spacing:0.12em;text-transform:uppercase}
.caption{font-size:0.8125rem;font-weight:400}

/* ── Colors ── */
.text-dark{color:#1D2222}.text-light{color:#EEEEEF}.text-muted{color:#6B7070}
.text-muted-50{color:rgba(107,112,112,0.5)}.text-light-40{color:rgba(238,238,239,0.4)}
.text-light-60{color:rgba(238,238,239,0.6)}.text-light-70{color:rgba(238,238,239,0.7)}
.text-light-30{color:rgba(238,238,239,0.3)}.text-muted-60{color:rgba(107,112,112,0.6)}
.bg-dark{background:#1D2222}.bg-light{background:#EEEEEF}.bg-white{background:#fff}

/* ── Layout ── */
.container{width:min(100%,var(--content));max-width:var(--content);margin:0 auto;padding:0 var(--gutter)}
.section-py{padding:clamp(4rem,6vw,6rem) 0}.section-py-lg{padding:clamp(5rem,8vw,8rem) 0}
main{flex:1}

/* ── Header ── */
.header{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(29,34,34,0.96);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:background .4s ease,box-shadow .4s ease;border-bottom:1px solid rgba(238,238,239,0.08);box-shadow:0 8px 24px rgba(0,0,0,0.08)}
.header.scrolled{background:rgba(29,34,34,0.98);border-bottom-color:rgba(238,238,239,0.12)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-height-mobile);gap:1rem}
@media(min-width:1024px){.header-inner{height:var(--header-height-desktop)}}
.nav-desktop{display:none;align-items:center;gap:clamp(1.5rem,2.4vw,2.75rem)}
@media(min-width:1024px){.nav-desktop{display:flex}}
.nav-desktop a{font-size:clamp(1rem,.18vw + .98rem,1.1rem);letter-spacing:0.015em;color:rgba(238,238,239,0.72);text-decoration:none;transition:color .3s ease;cursor:pointer;position:relative}
.nav-desktop a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:1px;background:#EEEEEF;transition:width .3s var(--ease-out-expo)}
.nav-desktop a:hover,.nav-desktop a.active{color:#EEEEEF}
.nav-desktop a:hover::after,.nav-desktop a.active::after{width:100%}

/* ── Burger ── */
.burger{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;width:2.9rem;height:2.9rem;padding:0;cursor:pointer;background:none;border:none;z-index:60;position:relative;-webkit-tap-highlight-color:transparent;flex-shrink:0}
@media(min-width:1024px){.burger{display:none}}
.burger span{display:block;width:24px;height:1.5px;background:#EEEEEF;transition:all .35s var(--ease-out-expo);transform-origin:center}
.burger.open span:nth-child(1){transform:rotate(45deg) translate(4.5px,4.5px)}
.burger.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.burger.open span:nth-child(3){transform:rotate(-45deg) translate(4.5px,-4.5px)}

/* ── Mobile Menu ── */
.mobile-menu{position:fixed;inset:var(--header-height-mobile) 0 0 0;background:rgba(29,34,34,0.985);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);z-index:999;padding:clamp(1rem,4vw,2rem) 0 max(2rem,env(safe-area-inset-bottom));display:block;opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .3s ease,transform .3s var(--ease-out-expo),visibility 0s linear .3s;overflow-y:auto;-webkit-overflow-scrolling:touch;border-top:1px solid rgba(238,238,239,0.08)}
.mobile-menu.open{opacity:1;visibility:visible;transform:translateY(0);transition:opacity .3s ease,transform .3s var(--ease-out-expo),visibility 0s linear 0s}
@media(min-width:1024px){.mobile-menu{display:none!important}}
.mobile-menu-inner{width:min(100%,var(--content));margin:0 auto;padding:0 var(--gutter) max(1.25rem,env(safe-area-inset-bottom))}
.mobile-menu a{display:block;width:100%;padding:clamp(1rem,1.6vw,1.35rem) 0;font-family:var(--font-display);font-size:clamp(1.7rem,5.8vw,2.35rem);font-weight:400;letter-spacing:-0.01em;border-bottom:1px solid rgba(216,216,217,0.3);color:rgba(238,238,239,0.78);text-decoration:none;transition:color .3s ease,transform .4s var(--ease-out-expo),opacity .4s ease;cursor:pointer;opacity:0;transform:translateY(20px)}
.mobile-menu.open a{opacity:1;transform:translateY(0)}
.mobile-menu.open a:nth-child(1){transition-delay:.05s}
.mobile-menu.open a:nth-child(2){transition-delay:.1s}
.mobile-menu.open a:nth-child(3){transition-delay:.15s}
.mobile-menu.open a:nth-child(4){transition-delay:.2s}
.mobile-menu a:hover,.mobile-menu a.active{color:#EEEEEF}

/* ── Footer ── */
.footer{background:#1D2222;color:rgba(238,238,239,0.7)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:3rem;padding:4rem 0}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.2fr 1fr 1fr;padding:5.5rem 0;gap:2.5rem}}
.footer h3{font-family:var(--font-body);font-size:0.75rem;font-weight:500;letter-spacing:0.1em;text-transform:uppercase;color:rgba(238,238,239,0.4);margin-bottom:1.25rem}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:0.75rem}
.footer a{font-size:0.875rem;color:rgba(238,238,239,0.7);text-decoration:none;transition:color .3s;cursor:pointer}
.footer a:hover{color:#EEEEEF}
.footer-bar{border-top:1px solid rgba(238,238,239,0.1);padding:1.5rem 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem}
.footer-bar span,.footer-bar a{font-size:0.8125rem;color:rgba(238,238,239,0.3)}
.footer-bar a{text-decoration:none;transition:color .3s;cursor:pointer}
.footer-bar a:hover{color:rgba(238,238,239,0.6)}
.footer-social{display:inline-flex;align-items:center;gap:0.875rem;margin-left:0.25rem}
.footer-social a{display:inline-flex;align-items:center;justify-content:center;width:1.75rem;height:1.75rem;color:rgba(238,238,239,0.35);transition:color .3s ease}
.footer-social a:hover{color:rgba(238,238,239,0.85)}
.footer-social svg{width:1rem;height:1rem;display:block}

/* ── Logo ── */
.logo{display:flex;align-items:center;gap:0.875rem;text-decoration:none;cursor:pointer;z-index:55;position:relative}
.logo svg{height:2rem;width:auto}
.logo-icon{display:none!important;height:0!important;width:0!important}
@media(min-width:1024px){.logo svg{height:2.25rem}}
.logo img{display:block;height:auto}
.logo-wordmark{width:auto;height:clamp(1.05rem,1.2vw + .85rem,1.4rem);max-width:min(58vw,18rem);object-fit:contain}
@media(min-width:1024px){.logo-wordmark{height:1.4rem;max-width:19rem}}
.header .logo img{filter:brightness(0) invert(1)}
.footer .logo img{filter:brightness(0) invert(1)}
.footer .logo{opacity:.98}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;padding:clamp(.9rem,.3vw + .85rem,1.05rem) clamp(1.35rem,1.2vw + 1rem,2.15rem);font-size:clamp(.92rem,.1vw + .9rem,1rem);letter-spacing:0.03em;text-decoration:none;transition:all .35s var(--ease-out-expo);border:none;cursor:pointer;font-family:var(--font-body);font-weight:500;border-radius:0}
.btn-primary{background:#1D2222;color:#EEEEEF}.btn-primary:hover{background:#2A3030;transform:translateY(-1px)}
.btn-outline{border:1px solid rgba(29,34,34,0.2);color:#1D2222;background:transparent}.btn-outline:hover{border-color:rgba(29,34,34,0.5);transform:translateY(-1px)}
.btn-primary-inv{background:#EEEEEF;color:#1D2222}.btn-primary-inv:hover{background:#fff;transform:translateY(-1px)}
.btn-outline-inv{border:1px solid rgba(238,238,239,0.2);color:rgba(238,238,239,0.7);background:transparent}.btn-outline-inv:hover{border-color:rgba(238,238,239,0.5);color:#EEEEEF;transform:translateY(-1px)}

/* ── Grids ── */
.grid-12{display:grid;grid-template-columns:1fr;gap:3rem}
@media(min-width:1024px){.grid-12{grid-template-columns:repeat(12,1fr);gap:4rem}}
@media(min-width:1024px){.col-4{grid-column:span 4}.col-5{grid-column:span 5}.col-6{grid-column:span 6}.col-7{grid-column:span 7}.col-8{grid-column:span 8}}
.grid-3{display:grid;grid-template-columns:1fr;gap:3rem}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(3,1fr);gap:4rem}}
.grid-2{display:grid;grid-template-columns:1fr;gap:1.5rem}
@media(min-width:640px){.grid-2{grid-template-columns:repeat(2,1fr)}}

/* ── Utilities ── */
.text-balance{text-wrap:balance}
.divider{height:1px;background:rgba(29,34,34,0.08)}
.italic{font-style:italic}
address{font-style:normal}
img{max-width:100%;height:auto}
a{color:inherit}
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{left:1rem;top:1rem;width:auto;height:auto;background:#fff;padding:.75rem 1rem;z-index:200;border:1px solid rgba(29,34,34,.15)}
:focus-visible{outline:2px solid rgba(29,34,34,.45);outline-offset:2px}
.fade-up{opacity:1}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.gap-px-grid{display:grid;gap:1px;background:rgba(29,34,34,0.08)}
.gap-px-grid>*{background:#fff}
@media(min-width:768px){.gap-px-grid.cols-2{grid-template-columns:repeat(2,1fr)}.gap-px-grid.cols-3{grid-template-columns:repeat(3,1fr)}}
.line-grow{width:3rem;height:1px;background:rgba(29,34,34,0.2);margin-bottom:2rem;transition:width .6s var(--ease-out-expo)}
.group:hover .line-grow{width:5rem}
.hero-accent-line{width:4rem;height:2px;background:linear-gradient(90deg,#8B7355,rgba(139,115,85,0.15));margin-top:2.5rem;animation:lineExpand 1.2s var(--ease-out-expo) .5s both}
@keyframes lineExpand{from{width:0;opacity:0}to{width:4rem;opacity:1}}

/* ── Founder Cards (legacy compat) ── */
.founder-card{position:relative;background:#fff;padding:2.5rem;cursor:pointer;transition:all .4s var(--ease-out-expo);overflow:hidden;border:none;text-align:left;width:100%;font-family:inherit}
button.founder-card{appearance:none}
.founder-card:hover{background:#f5f5f6;transform:translateY(-3px)}
.founder-card:focus-visible{outline:2px solid rgba(29,34,34,.45);outline-offset:-2px}
.founder-card .founder-role{margin-bottom:0.5rem}
.founder-card .founder-name{margin-bottom:0;font-family:var(--font-display)}
.founder-card .founder-hint{margin-top:1rem;font-size:0.8125rem;color:#6B7070;opacity:0.5;transition:opacity .3s,transform .3s var(--ease-out-expo)}
.founder-card:hover .founder-hint{opacity:1;transform:translateX(4px)}

/* ── Person Cards (Organe) – BULLETPROOF ── */
#organe-cards{display:grid;grid-template-columns:1fr;gap:1.5rem;max-width:52rem}
@media(min-width:640px){#organe-cards{grid-template-columns:1fr 1fr}}
.person-card{
  background:#ffffff;
  overflow:hidden;
  border:1px solid rgba(29,34,34,0.08);
  transition:box-shadow 0.4s cubic-bezier(.16,1,.3,1),border-color 0.3s ease;
}
.person-card.is-open{
  border-color:rgba(29,34,34,0.15);
  box-shadow:0 8px 32px rgba(29,34,34,0.07);
}
.person-card-header{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:1rem;
  padding:1.75rem 1.5rem;
  cursor:pointer;
  background:none;
  border:none;
  width:100%;
  text-align:left;
  font-family:'DM Sans',system-ui,-apple-system,sans-serif;
  font-size:1rem;
  color:#1D2222;
  -webkit-tap-highlight-color:transparent;
  transition:background 0.25s ease;
}
@media(min-width:640px){
  .person-card-header{padding:2rem 2.25rem}
}
.person-card-header:hover{background:rgba(29,34,34,0.015)}

.person-toggle{
  width:2rem;height:2rem;
  flex-shrink:0;
  margin-top:0.125rem;
  display:flex;align-items:center;justify-content:center;
  position:relative;
}
.person-toggle span{
  display:block;position:absolute;
  background:#6B7070;
  transition:transform 0.4s cubic-bezier(.16,1,.3,1),opacity 0.3s ease;
}
.person-toggle span:first-child{width:12px;height:1.5px}
.person-toggle span:last-child{width:1.5px;height:12px}
.person-card.is-open .person-toggle span:last-child{
  transform:rotate(90deg);opacity:0;
}

.person-card-body{
  max-height:0;
  overflow:hidden;
  transition:max-height 0.45s cubic-bezier(.16,1,.3,1),opacity 0.35s ease;
  opacity:0;
}
.person-card.is-open .person-card-body{opacity:1}

.person-card-content{
  padding:0 1.5rem 1.75rem;
}
@media(min-width:640px){
  .person-card-content{padding:0 2.25rem 2rem}
}

.person-contact-row{
  display:flex;align-items:center;gap:0.875rem;
  padding:0.875rem 1rem;
  background:#EEEEEF;
  color:#1D2222;
  text-decoration:none;
  font-size:0.9375rem;
  font-family:'DM Sans',system-ui,-apple-system,sans-serif;
  transition:background 0.25s ease,transform 0.25s cubic-bezier(.16,1,.3,1);
}
.person-contact-row:hover{
  background:rgba(29,34,34,0.06);
  transform:translateX(3px);
}
.person-contact-row svg{
  width:1rem;height:1rem;flex-shrink:0;color:#6B7070;
}

/* ── Project Cards (home) ── */
.project-card{background:#fff;padding:2.5rem;transition:all .4s var(--ease-out-expo);display:block}
.project-card:hover{background:#EEEEEF;transform:translateY(-2px)}
.project-status{display:inline-block;padding:0.25rem 0.75rem;font-size:0.6875rem;font-weight:500;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:1.25rem}
.status-completed{background:rgba(29,34,34,0.08);color:#1D2222}
.status-active{background:#1D2222;color:#EEEEEF}
.status-planned{background:rgba(29,34,34,0.04);color:#6B7070}

/* ── Project Accordion ── */
.project-accordion{display:flex;flex-direction:column;gap:0;border-top:1px solid rgba(29,34,34,0.1)}
.project-accordion-item{border-bottom:1px solid rgba(29,34,34,0.1);overflow:hidden}
.project-accordion-header{display:flex;align-items:center;justify-content:space-between;padding:2rem 0;cursor:pointer;background:none;border:none;width:100%;text-align:left;font-family:inherit;transition:padding .4s var(--ease-out-expo);-webkit-tap-highlight-color:transparent}
@media(min-width:768px){.project-accordion-header{padding:2.5rem 0}}
.project-accordion-header:hover{padding-left:0.5rem}
.project-header-left{display:flex;align-items:center;gap:1.25rem;flex:1;min-width:0}
@media(min-width:768px){.project-header-left{gap:2rem}}
.project-number{font-family:var(--font-display);font-size:clamp(1.25rem,2vw,1.75rem);color:rgba(29,34,34,0.12);font-weight:400;flex-shrink:0;width:2.5rem;transition:color .4s ease}
@media(min-width:768px){.project-number{width:3rem;font-size:clamp(1.5rem,2vw,2rem)}}
.project-accordion-item.is-open .project-number{color:#1D2222}
.project-header-info{display:flex;flex-direction:column;gap:0.35rem;min-width:0}
.project-header-info h2{font-family:var(--font-display);font-size:clamp(1.125rem,2vw,1.75rem);font-weight:400;color:#1D2222;letter-spacing:-0.01em}
.project-header-meta{display:flex;align-items:center;gap:0.75rem;flex-wrap:wrap}
@media(min-width:768px){.project-header-meta{gap:1rem}}
.project-accordion-toggle{width:2.5rem;height:2.5rem;flex-shrink:0;display:flex;align-items:center;justify-content:center;position:relative}
.project-accordion-toggle span{display:block;position:absolute;background:#1D2222;transition:transform .4s var(--ease-out-expo),opacity .3s ease}
.project-accordion-toggle span:first-child{width:14px;height:1.5px}
.project-accordion-toggle span:last-child{width:1.5px;height:14px}
.project-accordion-item.is-open .project-accordion-toggle span:last-child{transform:rotate(90deg);opacity:0}
.project-accordion-body{max-height:0;overflow:hidden;transition:max-height .55s var(--ease-out-expo),opacity .4s ease;opacity:0}
.project-accordion-item.is-open .project-accordion-body{max-height:600px;opacity:1}
.project-accordion-content{padding:0 0 2.5rem 0}
@media(min-width:768px){.project-accordion-content{padding:0 0 3rem 3.75rem}}
@media(min-width:1024px){.project-accordion-content{padding:0 0 3rem 5rem}}
.project-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.5rem}
@media(min-width:1024px){.project-detail-grid{grid-template-columns:repeat(4,1fr);gap:1.5rem}}
.project-detail-item{padding:1.25rem;background:#EEEEEF;transition:background .3s ease}
.project-detail-item:hover{background:rgba(29,34,34,0.06)}
.project-detail-item .overline{margin-bottom:0.5rem;display:block}

/* ── Scroll Reveal ── */
.reveal{opacity:0;transform:translate3d(0,12px,0);filter:blur(0.8px);transition:opacity .38s var(--ease-out-quint),transform .38s var(--ease-out-quint),filter .38s var(--ease-out-quint);will-change:opacity,transform,filter}
.reveal.is-visible{opacity:1;transform:translate3d(0,0,0);filter:blur(0)}
.reveal-delay-1{transition-delay:.02s}.reveal-delay-2{transition-delay:.04s}.reveal-delay-3{transition-delay:.06s}.reveal-delay-4{transition-delay:.08s}

/* ── Transitions ── */
html{view-transition-name:none}
body.site-body{opacity:1;transform:translateY(0);transition:opacity .28s ease,transform .28s ease,background-color .25s ease}
body.site-body.is-entering{opacity:0;transform:translateY(14px)}
body.site-body.is-leaving{opacity:0;transform:translateY(10px);pointer-events:none}
main{transition:filter .28s ease}
body.site-body.is-leaving main{filter:blur(4px)}
.group,.project-card,.footer-grid>div,.grid-12>div,.gap-px-grid>a,.gap-px-grid>div{transform:translateZ(0)}
@supports(view-transition-name:none){::view-transition-old(root),::view-transition-new(root){animation-duration:.32s;animation-timing-function:var(--ease-out-quint)}}
body.is-locked{overflow:hidden!important;touch-action:none}

/* ── Reduced motion ── */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important}
  .mobile-menu a{opacity:1!important;transform:none!important}
}
@media(min-width:1400px){
  .display{font-size:clamp(3.25rem,4.75vw,5.6rem)}
  .display-sm{font-size:clamp(2.35rem,3vw,3.9rem)}
}
@media(max-width:767px){
  .grid-12,.grid-3{gap:2rem}
  .hero-accent-line{margin-top:2rem}
}
@media print{.header,.footer,.burger,.mobile-menu,.skip-link{display:none!important}body{font-size:12pt;color:#000}.container{max-width:100%;padding:0}}

@media(max-width:1023px){
  .header{backdrop-filter:none;-webkit-backdrop-filter:none}
  .mobile-menu{top:var(--header-height-mobile)}
}