/* ============ Tokens ============ */
:root {
  --dark: #12100D;
  --dark-2: #1C1912;
  --dark-3: #24201760;
  --cream: #F5F1EA;
  --cream-2: #EDE6DA;
  --white: #FFFFFF;
  --accent: #C1652F;
  --accent-2: #8C6A4F;
  --text-dark: #12100D;
  --text-muted-dark: #6B6255;
  --text-on-dark: #FFFFFF;
  --text-muted-on-dark: #C9C2B6;
  --border-on-dark: rgba(255,255,255,0.14);
  --border-on-light: rgba(18,16,13,0.12);
  --max-w: 1180px;
  --gap: clamp(1.5rem, 4vw, 4rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; color-scheme: light; }
section[id], #top { scroll-margin-top: 90px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--cream);
  color: var(--text-dark);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', 'Arial Narrow', Arial, sans-serif;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { display: block; max-width: 100%; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 1.1rem;
}
.section-mark {
  width: 15px;
  height: 15px;
  flex: none;
  position: relative;
  border: 1.5px solid currentColor;
}
.section-mark::before,
.section-mark::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.section-mark::before { top: 0; bottom: 0; left: 50%; width: 1.5px; transform: translateX(-50%); }
.section-mark::after { left: 0; right: 0; top: 50%; height: 1.5px; transform: translateY(-50%); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.9rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: #a8531f; }

.btn-ghost-dark {
  background: transparent;
  color: var(--white);
  border-color: var(--border-on-dark);
}
.btn-ghost-dark:hover { background: rgba(255,255,255,0.08); }

.btn-ghost-light {
  background: transparent;
  color: var(--text-dark);
  border-color: var(--border-on-light);
}
.btn-ghost-light:hover { background: rgba(18,16,13,0.06); }

/* ============ Ansprechpartner ============ */
.ansprechpartner-grid {
  display: grid;
  grid-template-columns: 0.55fr 1fr;
  gap: var(--gap);
  align-items: center;
}
.ansprechpartner-photo img {
  width: 100%;
  max-width: 260px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}
.ansprechpartner-grid h2 { margin-top: 0.35rem; }
.role-tag {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  color: var(--accent);
  margin-top: 0.35rem;
  margin-bottom: 1rem;
}

/* ============ Partner ============ */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: clamp(2rem, 6vw, 4.5rem);
  margin-top: 2.5rem;
}
.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  filter: grayscale(1);
  opacity: 0.6;
  transition: filter 0.25s ease, opacity 0.25s ease, transform 0.25s ease;
}
.partner-logo:hover {
  filter: grayscale(0);
  opacity: 1;
  transform: translateY(-2px);
}
.partner-logo img {
  height: 64px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
}

/* ============ Header ============ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.1rem 0;
  transition: background 0.3s ease, border-color 0.3s ease, padding 0.3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(18,16,13,0.92);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--border-on-dark);
  padding: 0.8rem 0;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
}
.brand img { width: 30px; height: 30px; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.main-nav a {
  font-size: 0.9rem;
  color: var(--text-muted-on-dark);
  transition: color 0.2s ease;
}
.main-nav a:hover { color: var(--white); }

.header-cta { display: flex; align-items: center; gap: 1rem; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-on-dark);
  color: var(--white);
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--dark);
  overflow: hidden;
  color: var(--white);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(180deg, rgba(18,16,13,0.55) 0%, rgba(18,16,13,0.75) 55%, var(--dark) 100%),
    repeating-linear-gradient(90deg, #1C1912 0 118px, #211D15 118px 120px),
    repeating-linear-gradient(0deg, transparent 0 118px, rgba(0,0,0,0.15) 118px 120px);
  background-size: cover, 120px 120px, 120px 120px;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 50% at 80% 20%, rgba(193,101,47,0.22), transparent 70%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 6rem 0 4rem;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}
.tag {
  font-size: 0.78rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border-on-dark);
  color: var(--text-muted-on-dark);
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  max-width: 16ch;
  color: var(--white);
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero-sub {
  margin-top: 1.75rem;
  max-width: 46ch;
  font-size: 1.1rem;
  color: var(--text-muted-on-dark);
}
.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.hero-scroll {
  position: absolute;
  right: clamp(1.25rem, 4vw, 2.5rem);
  bottom: 2.5rem;
  z-index: 2;
  color: var(--text-muted-on-dark);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  writing-mode: vertical-rl;
}
.hero-scroll::after {
  content: "";
  width: 1px;
  height: 50px;
  background: var(--border-on-dark);
}

/* ============ Section shells ============ */
section { position: relative; }
.section-pad { padding: clamp(4.5rem, 10vw, 7.5rem) 0; }
.on-dark { background: var(--dark); color: var(--white); }
.on-dark .text-muted { color: var(--text-muted-on-dark); }
.on-light { background: var(--cream); color: var(--text-dark); }
.on-light .text-muted { color: var(--text-muted-dark); }
.on-white { background: var(--white); color: var(--text-dark); }

.section-head {
  max-width: 62ch;
  margin-bottom: 3.5rem;
}
.section-head h2 {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
}
.section-head p { margin-top: 1.25rem; font-size: 1.05rem; }

/* ============ About / stats ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--gap);
  align-items: start;
}
.about-grid .section-head { margin-bottom: 1.75rem; }
.stats-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 380px;
  border-top: 1px solid var(--border-on-light);
  padding-top: 2rem;
}
.stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 4vw, 2.75rem);
  color: var(--accent);
}
.stat-label {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-muted-dark);
}
.about-note {
  font-size: 0.8rem;
  color: var(--text-muted-dark);
  margin-top: 1rem;
}

/* ============ Leistungen ============ */
.services-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
}
.service-tiles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border-on-dark);
  border: 1px solid var(--border-on-dark);
}
.service-tile {
  background: var(--dark);
  padding: 1.6rem 1.5rem;
}
.service-tile-head {
  all: unset;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  width: 100%;
  cursor: pointer;
}
.service-tile.wide .service-tile-head { flex-direction: row; align-items: center; }
.service-tile .section-mark { color: var(--accent); }
.service-tile.wide { grid-column: span 2; }
.head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex: 1;
}
.service-tile span.name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  color: var(--white);
}
.chevron {
  position: relative;
  width: 13px;
  height: 13px;
  flex: none;
  color: var(--text-muted-on-dark);
}
.chevron::before, .chevron::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.chevron::before { top: 50%; left: 0; right: 0; height: 1.5px; transform: translateY(-50%); }
.chevron::after {
  left: 50%; top: 0; bottom: 0; width: 1.5px;
  transform: translateX(-50%);
  transition: transform 0.2s ease;
}
.service-tile.is-open .chevron::after { transform: translateX(-50%) scaleY(0); }
.service-tile-detail {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease;
}
.service-tile.is-open .service-tile-detail { max-height: 160px; }
.service-tile-detail p {
  padding-top: 1rem;
  font-size: 0.92rem;
  color: var(--text-muted-on-dark);
  max-width: 42ch;
}
.service-tile.wide .service-tile-detail p { max-width: 60ch; }

/* ============ Projekte (Case Studies) ============ */
.case-study {
  border-top: 1px solid var(--border-on-light);
  padding-top: 2.75rem;
  margin-top: 2.75rem;
}
.case-study:first-of-type { border-top: none; padding-top: 0; margin-top: 0; }
.projekte-more {
  display: flex;
  justify-content: center;
  margin-top: 2.75rem;
  padding-top: 2.75rem;
  border-top: 1px solid var(--border-on-light);
}
.case-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-bottom: 1.5rem;
}
.case-head h3 { font-size: 1.35rem; }
.project-tag {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
}
.case-final {
  display: grid;
  gap: 1.25rem;
}
.case-final-1 { grid-template-columns: 1fr; max-width: 640px; }
.case-final-1.case-final-wide { max-width: 620px; }
.case-img.case-img-wide { aspect-ratio: 4/3; }
.case-final-2 { grid-template-columns: repeat(2, 1fr); }
.case-final-3 { grid-template-columns: repeat(3, 1fr); }
.case-final-4 { grid-template-columns: repeat(4, 1fr); }
.case-img { background: var(--white); border: 1px solid var(--border-on-light); overflow: hidden; aspect-ratio: 3/4; }
.case-final-3 .case-img { aspect-ratio: 3/4; }
.case-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.case-beforeafter { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; max-width: 640px; }
.case-imgcap { margin-top: 0.6rem; font-size: 0.82rem; color: var(--text-muted-dark); }
.case-progress { margin-top: 1.5rem; }
.case-progress-label {
  font-size: 0.85rem;
  color: var(--text-muted-dark);
  margin-bottom: 0.9rem;
}
.case-progress-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}
.case-progress-grid .case-img { aspect-ratio: 3/4; }
.project-note {
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-muted-dark);
}

/* ============ Prozess ============ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.process-step {
  border-top: 1px solid var(--border-on-dark);
  padding-top: 1.5rem;
}
.process-step .num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.25rem;
  color: var(--accent);
}
.process-step h3 {
  margin-top: 0.9rem;
  font-size: 1.15rem;
  color: var(--white);
}
.process-step p {
  margin-top: 0.6rem;
  font-size: 0.92rem;
  color: var(--text-muted-on-dark);
}

/* ============ Kontakt ============ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-items: start;
}
.contact-cards {
  display: grid;
  gap: 1px;
  background: var(--border-on-light);
  border: 1px solid var(--border-on-light);
}
.contact-card {
  background: var(--cream);
  padding: 1.5rem 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.contact-card .label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted-dark);
}
.contact-card .value {
  margin-top: 0.3rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
}
.contact-card a.value:hover { color: var(--accent); }

.contact-cta-box {
  background: var(--dark-2);
  color: var(--white);
  padding: 2.5rem;
}
.contact-cta-box h3 { font-size: 1.6rem; max-width: 20ch; }
.contact-cta-box p { margin-top: 1rem; color: var(--text-muted-on-dark); }
.contact-cta-box .btn { margin-top: 1.75rem; }

/* ============ Footer ============ */
.site-footer {
  background: var(--dark);
  color: var(--text-muted-on-dark);
  padding: 2.25rem 0;
  border-top: 1px solid var(--border-on-dark);
  font-size: 0.85rem;
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ============ Utilities ============ */
.lede { margin-top: 1.5rem; font-size: 1.05rem; }
.u-mt-2 { margin-top: 2rem; }
.u-mt-1 { margin-top: 1rem; }
.footer-brand { color: var(--white); font-size: 1rem; }
.footer-brand img { width: 24px; height: 24px; }
.footer-credit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-on-dark);
  font-size: 0.78rem;
  opacity: 0.75;
  text-align: center;
}
.footer-credit-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-credit-logo { height: 13px; width: auto; }
.footer-credit a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.footer-credit a:hover { color: var(--white); }
.footer-credit-sep { opacity: 0.5; }
.swiss-cross {
  width: 13px;
  height: 13px;
  vertical-align: -2px;
}

/* ============ Reveal animation ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ============ Mobile ============ */
@media (max-width: 900px) {
  .main-nav { display: none; }
  .header-cta .btn-primary { display: none; }
  .nav-toggle { display: flex; }
  .about-grid, .services-layout, .contact-layout, .ansprechpartner-grid { grid-template-columns: 1fr; }
  .ansprechpartner-photo { display: flex; justify-content: center; margin-bottom: 0.5rem; }
  .case-final-2, .case-final-3, .case-final-4 { grid-template-columns: repeat(2, 1fr); }
  .case-progress-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}

@media (max-width: 560px) {
  .process-grid { grid-template-columns: 1fr; }
  .service-tiles { grid-template-columns: 1fr; }
  .service-tile.wide { grid-column: auto; }
  .service-tile.wide .service-tile-head { flex-direction: column; }
  .case-final-2, .case-final-3, .case-final-4 { grid-template-columns: 1fr; }
  .case-beforeafter { grid-template-columns: repeat(2, 1fr); }
  .case-progress-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-scroll { display: none; }
  .contact-card { flex-direction: column; align-items: flex-start; }
}

/* ============ Mobile nav dialog ============ */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--dark);
  display: none;
  flex-direction: column;
  padding: 1.5rem clamp(1.25rem, 4vw, 2.5rem);
}
.mobile-nav.open { display: flex; }
.mobile-nav-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mobile-nav-close {
  background: none;
  border: 1px solid var(--border-on-dark);
  color: var(--white);
  width: 42px; height: 42px;
  cursor: pointer;
}
.mobile-nav-links {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}
.mobile-nav-links a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.9rem;
  color: var(--white);
}