:root {
  --black: #030303;
  --anthracite: #111111;
  --silver: #d7d7d7;
  --white: #f7f7f7;
  --line: rgba(255, 255, 255, 0.12);
  --muted: rgba(255, 255, 255, 0.78);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.hero {
  background: var(--black);
}

.site-menu {
  position: relative;
  z-index: 4;
  min-height: 64px;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--line);
}

.site-name {
  border: 0;
  background: transparent;
  color: var(--white);
  font-size: clamp(1rem, 2vw, 1.55rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.site-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 3;
  min-width: 180px;
  padding: 8px;
  display: grid;
  gap: 4px;
  border: 1px solid var(--line);
  background: rgba(3, 3, 3, 0.96);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -6px);
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
}

.site-dropdown a,
.site-dropdown button {
  padding: 10px 12px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.site-dropdown a:hover,
.site-dropdown button:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
}

.site-menu.is-open .site-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav {
  min-height: 66px;
  width: min(980px, calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
  text-align: center;
  border-bottom: 1px solid var(--line);
  text-transform: uppercase;
  font-size: clamp(0.95rem, 1.8vw, 1.3rem);
  font-weight: 700;
}

.hero-art {
  position: relative;
  aspect-ratio: 1448 / 894;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.12)),
    url("assets/hero-metallbau.png") center -218px / 100% auto no-repeat;
}

.cta-hitarea {
  position: absolute;
  left: 50%;
  bottom: clamp(62px, 8vw, 110px);
  width: min(34vw, 490px);
  height: min(8vw, 92px);
  transform: translateX(-50%);
}

.section {
  padding: 72px 24px;
  background: var(--black);
}

.section-dark {
  background: var(--anthracite);
}

.section-inner {
  width: min(1100px, 100%);
  margin: 0 auto;
}

h2 {
  margin: 0 0 28px;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.service-grid article {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.service-grid h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.service-grid p,
.split p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.split {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(280px, 1fr);
  gap: 32px;
  align-items: start;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  color: var(--muted);
}

.contact-links button {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 160ms ease, visibility 160ms ease;
}

.contact-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.contact-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
}

.contact-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(520px, 100%);
  padding: 28px;
  border: 1px solid var(--line);
  background: rgba(17, 17, 17, 0.98);
}

.contact-modal-dialog h2 {
  margin-bottom: 22px;
}

.contact-modal-close {
  position: absolute;
  top: 10px;
  right: 12px;
  border: 0;
  background: transparent;
  color: var(--white);
  font-size: 1.6rem;
  cursor: pointer;
}

.contact-modal form {
  display: grid;
  gap: 16px;
}

.contact-modal label {
  display: grid;
  gap: 8px;
}

.contact-modal span {
  color: var(--silver);
  font-size: 0.95rem;
}

.contact-modal input,
.contact-modal textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--white);
  font: inherit;
  padding: 12px;
}

.contact-modal textarea {
  resize: vertical;
}

.form-honey {
  display: none;
}

.submit-button {
  min-height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 760px) {
  .site-menu {
    min-height: 56px;
    padding: 0 16px;
  }

  .nav {
    min-height: auto;
    padding: 18px 16px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    text-align: center;
  }

  .hero-art {
    aspect-ratio: auto;
    min-height: 500px;
    background-size: auto 125%;
    background-position: center bottom;
  }

  .cta-hitarea {
    bottom: 42px;
    width: 72vw;
    height: 72px;
  }

  .section {
    padding: 56px 16px;
  }

  .service-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .contact-links {
    flex-direction: column;
    gap: 12px;
  }
}