:root {
  --ink: #161616;
  --muted: #5c5c5c;
  --paper: #f4f2ee;
  --white: #fff;
  --line: #d6d3cc;
  --accent: #59802d;
  --header-h: 4.25rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Roboto, "Helvetica Neue", sans-serif;
  font-size: 1.05rem;
  line-height: 1.55;
}

img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  display: block;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
#inhalt a { color: var(--accent); }
#inhalt a:hover { color: var(--ink); }
#inhalt p a,
#inhalt li a {
  text-decoration: none;
  border-bottom: 2px dotted var(--accent);
  padding-bottom: 0.12em;
}
#inhalt p a:hover,
#inhalt li a:hover {
  border-bottom-color: var(--ink);
}
a[href^="http"] {
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 12 12' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolygon fill='grey' points='2,2 5,2 5,3 3,3 3,9 9,9 9,7 10,7 10,10 2,10'/%3E%3Cpolygon fill='grey' points='6.2,2 10,2 10,5.8 8.6,4.4 6.5,6.5 5.5,5.5 7.6,3.4'/%3E%3C/svg%3E") no-repeat left center;
  padding-left: 1.25em;
  background-size: 0.85em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background: rgba(255,255,255,0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(1.2) blur(8px);
}
.logo img { width: 11.5rem; height: auto; }

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  font: inherit;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  cursor: pointer;
  padding: 0.4rem 0;
}
.nav-toggle:focus-visible { outline: 1px solid var(--accent); }

.primary-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem 1.75rem;
}
.primary-nav > a {
  font-family: "Encode Sans Condensed", sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  padding: 0.35rem 0;
  color: var(--ink);
  background: none;
  border: 0;
}
.primary-nav > a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--accent);
}

.leistung-block {
  margin: 0 0 3rem;
  padding: 0 0 2.5rem;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 0.8rem);
}
.leistung-block:last-of-type {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
  margin: 0 0 2rem;
  padding: 0 0 1.2rem;
  border-bottom: 1px solid var(--line);
  font-family: "Encode Sans Condensed", sans-serif;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.page-jumps a { color: var(--ink); }
.page-jumps a:hover { color: var(--accent); }

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  min-height: calc(100vh - var(--header-h));
}
.hero figure {
  margin: 0;
  background: #111;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  position: relative;
}
.hero img {
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: cover;
  object-position: center;
  min-height: 28rem;
}
.hero figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 0.7rem 1rem;
  max-width: 90%;
  font-size: 0.78rem;
  line-height: 1.35;
  color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,0.55));
  width: 100%;
}
.hero-copy {
  padding: 3.5rem 3rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--paper);
}
.hero-copy p { max-width: 34rem; margin: 0 0 1rem; }

.kicker {
  font-family: "Encode Sans Condensed", sans-serif;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.8rem;
}
h1, h2, h3 {
  font-family: "Encode Sans Condensed", sans-serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}
h1 { font-size: clamp(1.8rem, 3vw, 2.4rem); line-height: 1.15; }
h2 { font-size: 1.45rem; padding-top: 0.6rem; }
h3 { font-size: 1.15rem; padding-top: 0.4rem; }

.cta {
  display: inline-block;
  margin-top: 0.4rem;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 0.1rem;
  font-family: "Encode Sans Condensed", sans-serif;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--ink);
}

.page-main,
.section {
  padding: 2.5rem 1.5rem 4rem;
  max-width: 46rem;
  margin: 0 auto;
}
.section.wide { max-width: 72rem; }
.page-main p,
.section p,
#inhalt p { max-width: 40em; }
.page-head {
  padding: 2.5rem 1.5rem 0;
  max-width: 72rem;
  margin: 0 auto;
}
.page-head p { max-width: 40rem; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem 1.1rem;
  margin-top: 2rem;
}
.card {
  display: flex;
  flex-direction: column;
  color: var(--ink);
}
.card .frame {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #eceae6;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
}
.card h3 {
  font-size: 1.05rem;
  margin: 0.7rem 0 0;
}

#inhalt figure {
  margin: 1.6rem 0;
  padding: 0;
  max-width: 40em;
  background: transparent;
}
#inhalt figure img {
  width: auto;
  height: auto;
  max-width: 100%;
}
#inhalt figure.isometrie-wand img {
  max-width: min(100%, 1023px);
}
@media (min-width: 43.75em) {
  #inhalt figure.isometrie-wand img {
    max-width: min(100%, 1818px);
  }
}
html.iso-open { overflow: hidden; }
.iso-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.75rem 1.25rem 1.25rem;
  background: rgba(22, 22, 22, 0.88);
  cursor: pointer;
}
.iso-overlay[hidden] { display: none; }
.iso-overlay img {
  max-width: min(100%, 1818px);
  max-height: calc(100vh - 4rem);
  width: auto;
  height: auto;
  background: var(--white);
  cursor: default;
}
.iso-overlay-close {
  position: absolute;
  top: 0.55rem;
  right: 0.85rem;
  margin: 0;
  padding: 0.2em 0;
  border: 0;
  background: transparent;
  color: var(--white);
  font: inherit;
  cursor: pointer;
}
#inhalt figcaption {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.45rem;
}
.mobilscale { width: auto; height: auto; max-width: 100%; }
.portrait {
  width: auto;
  height: auto;
  max-width: 100%;
  border-radius: 0;
}
figure.planer { background: transparent; }

.projektinfo {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
  margin: 0 0 1.6rem;
  max-width: 40em;
}

#inhalt ul { margin: 0.5em 0 1.2em; padding-left: 1.2em; }
#inhalt li { margin: 0.35em 0; }

.werdegang {
  margin: 0.5em 0 1.8em;
  padding: 0;
  max-width: 40em;
}
.werdegang > div {
  display: grid;
  grid-template-columns: 7.5em 1fr;
  gap: 0.35em 1em;
  margin: 0 0 0.85em;
}
.werdegang dt {
  margin: 0;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}
.werdegang dd {
  margin: 0;
}
.werdegang time { font-style: normal; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.4rem 1.5rem 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.site-footer a {
  color: var(--muted);
  background: none;
  padding-left: 0;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  align-items: center;
}
.site-footer--home {
  justify-content: space-between;
  align-items: flex-end;
}
.footer-climate {
  margin-left: auto;
  text-align: right;
  text-decoration: none;
  max-width: 24rem;
}
.footer-climate span {
  display: block;
  font-size: 0.72rem;
  margin-top: 0.25rem;
  color: var(--muted);
  background: none;
  padding-left: 0;
}
.footer-climate img {
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
}

#contact-form { max-width: 28em; text-align: left; }
#contact-form p { margin: 0.5em 0; max-width: none; }
#contact-form .datenschutz label { display: inline; font-weight: 400; }
#contact-form .datenschutz input { margin-right: 0.4em; vertical-align: middle; }
#contact-form input[type=text],
#contact-form input[type=email],
#contact-form input[type=tel],
#contact-form textarea {
  display: block;
  width: 100%;
  box-sizing: border-box;
  font-family: inherit;
  font-size: 1em;
  line-height: 1.4;
  padding: 0.45em 0.5em;
  border: 1px solid var(--ink);
  background: var(--white);
  color: var(--ink);
}
#contact-form input:focus,
#contact-form textarea:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}
#contact-form textarea { min-height: 10em; resize: vertical; }
#contact-form button {
  font-family: inherit;
  font-size: 1em;
  padding: 0.4em 0.9em;
  border: 1px solid var(--ink);
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
}
#contact-form button:hover,
#contact-form button:focus { border-color: var(--accent); color: var(--accent); }
#contact-form button:disabled { opacity: 0.6; cursor: wait; }
.hp {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.form-message { margin-top: 1em; padding: 0.8em 1em; max-width: 28em; }
.form-message--ok { background: #eef5e4; border: 1px solid var(--accent); }
.form-message--err { background: #f6efe8; border: 1px solid var(--ink); }
.form-message[hidden] { display: none; }

@media (max-width: 52em) {
  .nav-toggle { display: block; }
  .primary-nav {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.8rem 0 2rem;
    background: var(--paper);
    overflow: auto;
    z-index: 39;
  }
  body.nav-open .primary-nav,
  html.nav-open .primary-nav,
  .primary-nav:target {
    display: flex;
    height: calc(100vh - var(--header-h));
    width: 100%;
    background: var(--paper);
  }
  body.nav-open,
  html.nav-open,
  body:has(.primary-nav:target) { overflow: hidden; }
  .primary-nav > a { padding: 0.75rem 1.5rem; }
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero img { min-height: 18rem; max-height: 55vh; object-fit: cover; }
  .hero-copy { padding: 1.8rem 1.25rem 2.2rem; }
  .project-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 32em) {
  .project-grid { grid-template-columns: 1fr; }
  .werdegang > div { grid-template-columns: 1fr; gap: 0.1em; }
}

@media (min-width: 56.25em) {
  body.home {
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  body.home .site-header {
    flex: 0 0 var(--header-h);
  }
  body.home .hero {
    flex: 1 1 auto;
    min-height: 0;
  }
  body.home .hero img {
    min-height: 0;
    object-fit: cover;
    object-position: center;
  }
  body.home .hero-copy {
    min-height: 0;
    overflow-y: auto;
  }
  body.home .site-footer--home {
    flex: 0 0 auto;
  }
}

@media print {
  .site-header, .nav-toggle, .site-footer { display: none; }
  body { font-size: 10pt; color: #000; background: #fff; }
  a[href^="http"]:link:after { content: " (" attr(href) ") "; }
  #inhalt, .page-main { max-width: none; padding: 0; }
  h1 { font-size: 14pt; }
  h2, h3 { font-size: 12pt; }
}