/* ============================================================
   VistaCore — Website v2
   Etablierter deutscher Fensterhersteller — hell, fotogeführt
   ============================================================ */
:root{
  --navy:#0C1E36; --ink:#0A1622; --steel:#284C73;
  --cyan:#2FB8D6; --cyan-deep:#16809B; --glass:#E7F2F6;
  --paper:#FFFFFF; --paper-2:#F4F6F8; --stone:#F2F0EC;
  --line:#E3E8ED; --line-2:#EDF0F3;
  --line-d:rgba(255,255,255,.14); --mute-d:rgba(255,255,255,.62);
  --ink-soft:#3C4B57; --mid:#536270; --mute:#7A8794;
  --wa:#1FAE54;
  --maxw:1180px; --pad:46px; --nav-h:78px;
  --ff-d:"Libre Franklin",system-ui,sans-serif;
  --ff-b:"IBM Plex Sans",system-ui,sans-serif;
  --ff-m:"IBM Plex Mono",ui-monospace,monospace;
  --sh-sm:0 1px 2px rgba(10,22,34,.05),0 8px 24px -16px rgba(10,22,34,.28);
  --sh-md:0 24px 60px -38px rgba(10,22,34,.5);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
body{margin:0;background:var(--paper);color:var(--ink-soft);font-family:var(--ff-b);font-size:17px;line-height:1.65;}
h1,h2,h3,h4{font-family:var(--ff-d);font-weight:700;letter-spacing:-0.018em;margin:0;color:var(--ink);}
a{color:inherit;}
img{max-width:100%;display:block;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);}
.section{padding:118px 0;}
.section--tight{padding:90px 0;}
.section--alt{background:var(--paper-2);}

/* ---------- shared heads ---------- */
.eyebrow{font-family:var(--ff-b);font-weight:600;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan-deep);display:flex;align-items:center;gap:13px;margin:0 0 20px;}
.eyebrow .bar{flex:0 0 26px;height:2px;background:var(--cyan);border-radius:2px;}
.dark .eyebrow{color:#7FD4E6;}
.dark .eyebrow .bar{background:var(--cyan);}
.sec-title{font-size:clamp(31px,4vw,49px);line-height:1.06;margin:0 0 20px;}
.lede{font-size:19px;line-height:1.62;color:var(--mid);max-width:60ch;}
.dark .lede{color:rgba(255,255,255,.74);}
.dark .sec-title{color:#fff;}

/* ---------- wordmark ---------- */
.wordmark{font-family:var(--ff-d);font-weight:600;letter-spacing:-0.02em;white-space:nowrap;}
.wordmark b{font-weight:800;}
.lockup{display:inline-flex;align-items:center;gap:.5em;text-decoration:none;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--ff-b);font-weight:600;font-size:16px;
  text-decoration:none;padding:15px 28px;border-radius:3px;border:1.5px solid transparent;cursor:pointer;transition:.16s ease;white-space:nowrap;}
.btn svg{flex:none;}
.btn--primary{background:var(--navy);color:#fff;}
.btn--primary:hover{background:#13294a;transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(12,30,54,.7);}
.btn--ghost{background:transparent;color:var(--navy);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--navy);}
.btn--ghost-d{background:transparent;color:#fff;border-color:var(--line-d);}
.btn--ghost-d:hover{border-color:#fff;background:rgba(255,255,255,.06);}
.btn--wa{background:#fff;color:var(--navy);border-color:var(--line);}
.btn--wa:hover{border-color:var(--wa);color:var(--wa);}
.btn--wa svg{color:var(--wa);}
.btn--lg{padding:17px 32px;font-size:17px;}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;height:var(--nav-h);background:rgba(255,255,255,.86);
  backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid transparent;transition:.2s;}
.nav.scrolled{background:rgba(255,255,255,.96);border-bottom-color:var(--line);}
.nav__in{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px;}
.nav__links{display:flex;gap:30px;align-items:center;}
.nav__links a{text-decoration:none;color:var(--mid);font-size:15.5px;font-weight:500;transition:.15s;}
.nav__links a:hover{color:var(--navy);}
.nav__cta{display:flex;align-items:center;gap:16px;}
.nav__tel{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--navy);text-decoration:none;}
.nav__tel:hover{color:var(--cyan-deep);}
.nav__burger{display:none;background:none;border:0;cursor:pointer;padding:8px;color:var(--navy);}

/* ---------- window-frame image treatment ---------- */
.frame{position:relative;background:var(--paper-2);overflow:hidden;border:1px solid var(--line);}
.frame::before,.frame::after{content:"";position:absolute;background:rgba(12,30,54,.10);z-index:2;pointer-events:none;}
.frame::before{left:50%;top:0;bottom:0;width:1px;transform:translateX(-.5px);}
.frame::after{top:50%;left:0;right:0;height:1px;transform:translateY(-.5px);}
.frame.frame--nomull::before,.frame.frame--nomull::after{display:none;}

/* placeholder fill (neutral, light) */
.ph{position:relative;background:
   repeating-linear-gradient(135deg,rgba(40,76,115,.05) 0 1px,transparent 1px 13px), var(--paper-2);
  display:grid;place-items:center;color:var(--steel);overflow:hidden;}
.ph--sky{background:repeating-linear-gradient(135deg,rgba(40,76,115,.05) 0 1px,transparent 1px 13px),linear-gradient(180deg,#EAF1F5,#F4F6F8);}
.ph--dark{background:repeating-linear-gradient(135deg,rgba(255,255,255,.045) 0 1px,transparent 1px 13px),#102742;color:rgba(255,255,255,.6);}
.ph__tag{position:relative;z-index:3;font-family:var(--ff-m);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;text-align:center;line-height:1.5;padding:9px 15px;background:rgba(255,255,255,.78);border:1px solid var(--line);border-radius:3px;color:var(--steel);max-width:82%;}
.ph--dark .ph__tag{background:rgba(12,30,54,.5);border-color:var(--line-d);color:rgba(255,255,255,.7);}

/* real images inside frames */
.frame>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;z-index:1;}
.frame.has-img{background:#0a1622;}
.frame.has-img::before,.frame.has-img::after{display:none;}
.tech__media{aspect-ratio:4/3;border-radius:5px;border-color:var(--line-d);}
.ablauf__media{aspect-ratio:16/9;border-radius:5px;margin-top:54px;}
.ablauf__media img{object-position:center 40%;}

/* ---------- hero (full-bleed photo) ---------- */
.hero{position:relative;background:var(--navy);overflow:hidden;border-bottom:1px solid var(--line);}
.hero__bg{position:absolute;inset:0;z-index:0;}
.hero__bg img{width:100%;height:100%;object-fit:cover;object-position:center 42%;display:block;}
.hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(255,255,255,.72) 0%,rgba(255,255,255,.34) 40%,rgba(255,255,255,0) 64%);}
.hero__in{position:relative;z-index:2;display:flex;align-items:center;min-height:min(82vh,720px);padding:80px 0;}
.hero__card{background:rgba(255,255,255,.92);backdrop-filter:saturate(140%) blur(3px);border:1px solid rgba(255,255,255,.7);border-radius:7px;padding:48px 50px;max-width:580px;box-shadow:0 40px 90px -50px rgba(10,22,34,.6);}
.hero__note{display:inline-flex;align-items:center;gap:9px;font-size:14px;font-weight:600;color:var(--cyan-deep);margin-bottom:20px;letter-spacing:.01em;}
.hero__note .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:none;}
.hero h1{font-size:clamp(38px,5vw,62px);line-height:1.03;margin:0 0 20px;letter-spacing:-0.025em;}
.hero h1 .accent{color:var(--steel);}
.hero__sub{font-size:18.5px;line-height:1.55;color:var(--mid);max-width:44ch;margin:0 0 30px;}
.hero__actions{display:flex;gap:13px;flex-wrap:wrap;align-items:center;}
.hero__micro{margin-top:22px;font-size:14px;color:var(--mid);display:flex;gap:9px;align-items:center;}
.hero__micro svg{color:var(--cyan-deep);flex:none;}
.hero__seal{position:absolute;right:46px;bottom:40px;z-index:3;}
.seal{width:124px;height:124px;border-radius:50%;background:var(--navy);display:grid;place-items:center;text-align:center;box-shadow:0 22px 44px -20px rgba(10,22,34,.6);border:1.5px solid rgba(255,255,255,.12);}
.seal .t1{font-family:var(--ff-b);font-weight:600;font-size:8.5px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.72);}
.seal .pct{font-family:var(--ff-d);font-weight:800;font-size:34px;color:#fff;line-height:1.05;}
.seal .pct b{color:var(--cyan);font-weight:800;}
.seal .t2{font-size:8.5px;color:var(--cyan);letter-spacing:.04em;}

/* ---------- trust ---------- */
.trust{background:var(--paper);border-bottom:1px solid var(--line);}
.trust__in{display:grid;grid-template-columns:repeat(4,1fr);}
.trust__cell{padding:36px 32px;border-left:1px solid var(--line);}
.trust__cell:first-child{border-left:0;}
.trust__n{font-family:var(--ff-d);font-weight:700;font-size:40px;color:var(--navy);line-height:1;letter-spacing:-0.03em;}
.trust__n .u{color:var(--cyan-deep);font-size:.62em;font-weight:700;}
.trust__t{font-size:14.5px;color:var(--mid);margin-top:9px;line-height:1.45;}

/* ---------- section header (centered option) ---------- */
.shead{max-width:760px;}
.shead--c{margin:0 auto;text-align:center;}
.shead--c .eyebrow{justify-content:center;}
.shead--c .lede{margin-left:auto;margin-right:auto;}

/* ---------- services ---------- */
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:48px;}
.scard{background:#fff;border:1px solid var(--line);border-radius:5px;overflow:hidden;display:flex;flex-direction:column;transition:.2s ease;}
.scard:hover{box-shadow:var(--sh-sm);transform:translateY(-3px);border-color:#d5dde4;}
.scard__img{aspect-ratio:4/3;}
.scard__b{padding:28px 28px 32px;display:flex;flex-direction:column;gap:12px;flex:1;}
.scard__n{font-size:22px;font-weight:700;}
.scard__d{font-size:15.5px;color:var(--mid);line-height:1.55;margin:0;}
.scard__list{list-style:none;padding:14px 0 0;margin:auto 0 0;border-top:1px solid var(--line-2);display:flex;flex-direction:column;gap:9px;}
.scard__list li{font-size:14.5px;color:var(--mid);display:flex;gap:11px;align-items:flex-start;}
.scard__list li::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--cyan);margin-top:7px;flex:none;transform:rotate(45deg);}

/* ---------- Technik / Markenprofile (dark band) ---------- */
.tech{background:var(--navy);color:#fff;}
.tech__top{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.tech__lede{color:rgba(255,255,255,.74);font-size:18px;line-height:1.6;}
.brands{margin-top:52px;border-top:1px solid var(--line-d);border-bottom:1px solid var(--line-d);}
.brands__grid{display:grid;grid-template-columns:repeat(4,1fr);}
.brand-cell{padding:34px 22px;border-left:1px solid var(--line-d);border-bottom:1px solid var(--line-d);display:flex;flex-direction:column;gap:5px;align-items:flex-start;justify-content:center;min-height:118px;}
.brand-cell:nth-child(4n+1){border-left:0;}
.brand-cell__nm{font-family:var(--ff-d);font-weight:700;font-size:23px;letter-spacing:-0.01em;color:#fff;}
.brand-cell__cat{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#7FD4E6;font-weight:600;}
.brand-note{font-family:var(--ff-m);font-size:11.5px;color:rgba(255,255,255,.45);margin-top:18px;line-height:1.6;max-width:80ch;}
.specs{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:54px;}
.spec{}
.spec__v{font-family:var(--ff-d);font-weight:700;font-size:34px;color:#fff;line-height:1;letter-spacing:-0.02em;}
.spec__v .un{font-family:var(--ff-m);font-size:15px;font-weight:500;color:#7FD4E6;letter-spacing:0;margin-left:4px;}
.spec__k{font-size:14px;color:rgba(255,255,255,.66);margin-top:10px;line-height:1.45;}

/* ---------- BAFA + calculator (light, calm) ---------- */
.bafa__in{display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:center;}
.bafa__steps{list-style:none;padding:0;margin:30px 0 0;display:flex;flex-direction:column;gap:18px;}
.bafa__steps li{display:flex;gap:16px;align-items:flex-start;font-size:16.5px;color:var(--ink-soft);}
.bafa__steps .ic{flex:none;width:30px;height:30px;border-radius:3px;background:var(--glass);color:var(--cyan-deep);display:grid;place-items:center;font-family:var(--ff-d);font-weight:700;font-size:14px;}

.calc{background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:6px;padding:38px;box-shadow:var(--sh-sm);}
.calc__h{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:6px;}
.calc__h .t{font-family:var(--ff-d);font-weight:700;font-size:21px;color:var(--ink);}
.calc__h .pill{font-family:var(--ff-b);font-weight:600;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan-deep);background:var(--glass);border-radius:3px;padding:5px 11px;}
.calc__sub{font-size:14.5px;color:var(--mute);margin:0 0 28px;line-height:1.55;}
.calc__amt{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:13px;}
.calc__amt .k{font-size:14.5px;color:var(--mid);font-weight:500;}
.calc__amt .v{font-family:var(--ff-d);font-weight:700;font-size:30px;color:var(--navy);}
.calc input[type=range]{width:100%;-webkit-appearance:none;appearance:none;height:5px;border-radius:100px;background:var(--line);outline:none;margin:6px 0 4px;}
.calc input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--navy);border:3px solid #fff;box-shadow:0 2px 8px rgba(12,30,54,.35);cursor:pointer;}
.calc input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--navy);border:3px solid #fff;cursor:pointer;}
.calc__minmax{display:flex;justify-content:space-between;font-family:var(--ff-m);font-size:11.5px;color:var(--mute);}
.calc__out{margin-top:26px;border-top:1px solid var(--line);padding-top:24px;display:grid;gap:14px;}
.calc__row{display:flex;justify-content:space-between;align-items:center;}
.calc__row .k{font-size:15px;color:var(--mid);}
.calc__row .v{font-family:var(--ff-d);font-weight:600;font-size:18px;color:var(--ink);}
.calc__row.is-hi{background:var(--glass);margin:4px -18px 0;padding:16px 18px;border-radius:4px;}
.calc__row.is-hi .k{color:var(--cyan-deep);font-weight:600;}
.calc__row.is-hi .v{font-family:var(--ff-d);font-weight:700;font-size:26px;color:var(--cyan-deep);}
.calc__note{font-size:11.5px;color:var(--mute);margin-top:18px;line-height:1.6;}

/* ---------- Ablauf ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:22px;margin-top:48px;}
.step{position:relative;padding-top:56px;}
.step__n{position:absolute;top:0;left:0;width:42px;height:42px;border-radius:3px;background:var(--navy);color:#fff;display:grid;place-items:center;font-family:var(--ff-d);font-weight:700;font-size:18px;}
.step::after{content:"";position:absolute;top:21px;left:52px;right:-12px;height:1px;background:var(--line);}
.step:last-child::after{display:none;}
.step__t{font-family:var(--ff-d);font-weight:700;font-size:17.5px;margin:0 0 8px;color:var(--ink);}
.step__d{font-size:14.5px;color:var(--mid);line-height:1.55;margin:0;}

/* ---------- Über uns ---------- */
.about{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center;}
.about__art{aspect-ratio:4/3;border-radius:4px;}
.founder{display:flex;gap:16px;align-items:center;margin-top:32px;padding-top:28px;border-top:1px solid var(--line);}
.founder__av{width:62px;height:62px;border-radius:50%;flex:none;}
.founder__nm{font-family:var(--ff-d);font-weight:700;font-size:18px;color:var(--ink);}
.founder__ti{font-size:13.5px;color:var(--cyan-deep);font-weight:600;margin-top:2px;}

/* ---------- FAQ ---------- */
.faqwrap{max-width:820px;margin:48px auto 0;}
.faq__item{border-bottom:1px solid var(--line);}
.faq__q{width:100%;background:none;border:0;cursor:pointer;text-align:left;display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:25px 4px;font-family:var(--ff-d);font-weight:600;font-size:19px;color:var(--navy);}
.faq__q .ic{flex:none;width:22px;height:22px;position:relative;transition:.2s;}
.faq__q .ic::before,.faq__q .ic::after{content:"";position:absolute;background:var(--cyan-deep);border-radius:2px;}
.faq__q .ic::before{top:10px;left:2px;right:2px;height:2px;}
.faq__q .ic::after{left:10px;top:2px;bottom:2px;width:2px;transition:.2s;}
.faq__item.open .ic::after{transform:scaleY(0);}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq__a-in{padding:0 4px 26px;font-size:16px;color:var(--mid);line-height:1.66;max-width:70ch;}

/* ---------- Contact ---------- */
.contact{background:var(--navy);color:#fff;}
.contact__in{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;}
.contact__cta{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
.contact__lines{margin-top:34px;display:flex;flex-direction:column;gap:15px;}
.contact__row{display:flex;gap:16px;align-items:center;font-size:16px;color:rgba(255,255,255,.86);text-decoration:none;}
.contact__row .k{font-family:var(--ff-m);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:#7FD4E6;width:46px;flex:none;}
a.contact__row:hover{color:#fff;}
.form{background:rgba(255,255,255,.04);border:1px solid var(--line-d);border-radius:6px;padding:34px;}
.form__grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px;}
.field.full{grid-column:1/-1;}
.field label{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:rgba(255,255,255,.6);}
.field input,.field textarea,.field select{background:rgba(255,255,255,.06);border:1px solid var(--line-d);border-radius:3px;color:#fff;font-family:var(--ff-b);font-size:15.5px;padding:13px 15px;outline:none;transition:.15s;}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.4);}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--cyan);background:rgba(47,184,214,.08);}
.field textarea{resize:vertical;min-height:104px;}
.field select option{color:#0A1622;}
.form__note{font-size:11.5px;color:rgba(255,255,255,.5);margin-top:8px;line-height:1.6;}

/* ---------- Footer ---------- */
.foot{background:var(--ink);color:rgba(255,255,255,.56);border-top:1px solid var(--line-d);padding:48px 0;}
.foot__in{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center;font-size:13.5px;}
.foot__links{display:flex;gap:24px;}
.foot__links a{text-decoration:none;color:rgba(255,255,255,.56);}
.foot__links a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media(max-width:980px){
  :root{--pad:26px;}
  .hero__in,.bafa__in,.about,.contact__in{grid-template-columns:1fr;gap:42px;}
  .tech__top{grid-template-columns:1fr;gap:32px;}
  .hero__in{min-height:0;padding:64px 0;}
  .hero__card{padding:36px 30px;max-width:none;}
  .hero__seal{right:24px;bottom:24px;}
  .hero__seal .seal{width:104px;height:104px;}
  .cards3{grid-template-columns:1fr;}
  .brands__grid{grid-template-columns:repeat(2,1fr);}
  .brand-cell:nth-child(4n+1){border-left:1px solid var(--line-d);}
  .brand-cell:nth-child(2n+1){border-left:0;}
  .specs{grid-template-columns:repeat(2,1fr);gap:32px 26px;}
  .steps{grid-template-columns:1fr 1fr;}
  .step::after{display:none;}
  .trust__in{grid-template-columns:1fr 1fr;}
  .trust__cell:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .trust__cell:nth-child(odd){border-left:0;}
  .nav__links,.nav__tel{display:none;}
  .nav__burger{display:block;}
  .nav__links.open{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:18px 26px;gap:18px;box-shadow:0 20px 40px -20px rgba(8,19,32,.3);}
  .form__grid{grid-template-columns:1fr;}
  .section{padding:84px 0;}
}
@media(max-width:560px){
  .trust__in{grid-template-columns:1fr 1fr;}
  .steps,.specs{grid-template-columns:1fr;}
  .brands__grid{grid-template-columns:1fr;}
  .brand-cell:nth-child(2n+1){border-left:0;}
  .calc{padding:26px;}
  .hero h1{font-size:clamp(36px,11vw,48px);}
}