/* ========================================================
   BW-BAUWERK GmbH — Stylesheet
   ======================================================== */

:root {
  --black: #0a0a0b;
  --charcoal: #121214;
  --charcoal-alt: #1a1a1d;
  --line: #2a2a2e;
  --white: #f5f4f0;
  --gray: #a3a3a8;
  --gray-dim: #6f6f76;
  --accent: #d9a441;
  --accent-bright: #f0bc5e;
  --accent-dim: #8a6a2c;
  --danger: #c1502e;

  --font-head: 'Archivo', 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container: 1180px;
  --radius: 6px;
  --ease: cubic-bezier(.22,.68,0,1.01);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.1;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

section { position: relative; padding: 110px 0; }
@media (max-width: 768px) { section { padding: 70px 0; } }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 16px 30px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .35s var(--ease), background .35s, color .35s, border-color .35s;
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--accent);
  color: var(--black);
}
.btn-primary:hover { background: var(--accent-bright); transform: translateY(-3px); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--line);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }

/* ---------- Intro ---------- */
#intro {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--black);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
  transition: opacity .7s var(--ease), visibility .7s;
}
#intro.hide { opacity: 0; visibility: hidden; pointer-events: none; }
#intro .intro-logo {
  width: min(360px, 62vw);
  opacity: 0;
  transform: scale(.88);
  filter: drop-shadow(0 0 40px rgba(217,164,65,.15));
  animation: introLogo .6s var(--ease) forwards;
  animation-delay: .1s;
}
@keyframes introLogo { to { opacity: 1; transform: scale(1); } }

body.locked { overflow: hidden; height: 100vh; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  padding: 26px 0;
  transition: padding .4s var(--ease), background .4s, box-shadow .4s;
}
.site-header.scrolled {
  padding: 14px 0;
  background: rgba(10,10,11,0.86);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 42px; height: auto; flex-shrink: 0; transition: transform .3s; }
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.05); }
.brand-name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.brand-name span { display: block; font-size: 0.6rem; letter-spacing: 0.22em; color: var(--accent); font-weight: 700; margin-top: 2px; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  position: relative;
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 10px 16px;
  color: var(--gray);
  transition: color .3s;
}
.nav-links a::after {
  content: '';
  position: absolute; left: 16px; right: 16px; bottom: 4px;
  height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-links .btn { margin-left: 8px; padding: 12px 22px; }
.nav-links a.btn-primary, .nav-links a.btn-primary:hover { color: var(--black); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: transparent;
  position: relative;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ''; position: absolute; left: 10px; right: 10px; height: 2px; background: var(--white);
  transition: transform .3s, opacity .3s;
}
.nav-toggle span { top: 20px; }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 940px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; top: 0; right: 0; height: 100vh; width: min(320px, 84vw);
    background: var(--charcoal); flex-direction: column; justify-content: center;
    align-items: flex-start; gap: 4px; padding: 40px;
    transform: translateX(100%); transition: transform .45s var(--ease);
    box-shadow: -10px 0 40px rgba(0,0,0,.4);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { width: 100%; padding: 14px 0; font-size: 1rem; }
  .nav-links .btn { margin-left: 0; margin-top: 12px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding-top: 140px;
  overflow: hidden;
  isolation: isolate;
}
.hero canvas#hero-canvas { position: absolute; inset: 0; z-index: -2; opacity: .55; }
.hero::after {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(ellipse at 30% 20%, rgba(217,164,65,.14), transparent 55%),
              linear-gradient(180deg, rgba(10,10,11,0.2), var(--black) 92%);
}
.hero-content { max-width: 760px; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); margin-bottom: 22px; }
.hero h1 .accent { color: var(--accent); }
.hero p.lead { font-size: 1.15rem; color: var(--gray); max-width: 560px; margin-bottom: 38px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-stagger.in > * { transition-delay: calc(var(--i, 0) * 90ms); }

/* ---------- Section heading ---------- */
.section-head { max-width: 640px; margin-bottom: 60px; }
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
.section-head p { color: var(--gray); margin-top: 16px; font-size: 1.05rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Services grid ---------- */
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
@media (max-width: 940px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .services-grid { grid-template-columns: 1fr; } }

.service-card {
  background: var(--charcoal);
  padding: 42px 32px;
  position: relative;
  transition: background .4s;
  cursor: default;
}
.service-card:hover { background: var(--charcoal-alt); }
.service-card .num {
  font-family: var(--font-head); font-size: 0.75rem; color: var(--accent); letter-spacing: 0.1em; margin-bottom: 18px; display: block;
}
.service-card .icon { width: 44px; height: 44px; margin-bottom: 20px; color: var(--accent); transition: transform .4s var(--ease); }
.service-card:hover .icon { transform: translateY(-4px) rotate(-4deg); }
.service-card h3 { font-size: 1.05rem; margin-bottom: 12px; text-transform: none; letter-spacing: 0; }
.service-card p { color: var(--gray); font-size: 0.94rem; }
.service-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 0;
  background: var(--accent); transition: width .4s var(--ease);
}
.service-card:hover::before { width: 3px; }

/* ---------- Stats ---------- */
.stats-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
@media (max-width: 768px) { .stats-bar { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--charcoal); padding: 40px 24px; text-align: center; }
.stat .num { font-family: var(--font-head); font-size: clamp(2.2rem, 5vw, 3.2rem); font-weight: 800; color: var(--accent); }
.stat .label { color: var(--gray); font-size: 0.85rem; letter-spacing: 0.05em; text-transform: uppercase; margin-top: 8px; }

/* ---------- Why us / values ---------- */
.values-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
@media (max-width: 768px) { .values-grid { grid-template-columns: 1fr; } }
.value-item { display: flex; gap: 20px; padding: 26px 0; border-top: 1px solid var(--line); }
.value-item .icon { width: 30px; height: 30px; color: var(--accent); flex-shrink: 0; margin-top: 4px; }
.value-item h4 { font-size: 1rem; text-transform: none; letter-spacing: 0; margin-bottom: 8px; }
.value-item p { color: var(--gray); font-size: 0.94rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--charcoal-alt), var(--charcoal));
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: ''; position: absolute; inset: -2px;
  background: radial-gradient(circle at 20% 0%, rgba(217,164,65,.18), transparent 60%);
}
.cta-band h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin-bottom: 18px; position: relative; }
.cta-band p { color: var(--gray); margin-bottom: 32px; position: relative; }
.cta-band .hero-actions { justify-content: center; position: relative; }

/* ---------- Footer ---------- */
.site-footer { background: var(--charcoal); border-top: 1px solid var(--line); padding: 70px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h5 { font-family: var(--font-head); font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 20px; color: var(--white); }
.footer-grid p, .footer-grid li { color: var(--gray); font-size: 0.92rem; margin-bottom: 10px; }
.footer-grid a:hover { color: var(--accent); }
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p { max-width: 320px; }
.footer-bottom {
  margin-top: 60px; padding-top: 26px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 0.82rem; color: var(--gray-dim);
}
.footer-bottom a:hover { color: var(--accent); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { padding: 190px 0 70px; }
.page-hero .eyebrow { color: var(--accent); }
.page-hero h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
.breadcrumb { color: var(--gray-dim); font-size: 0.85rem; margin-top: 14px; }
.breadcrumb a:hover { color: var(--accent); }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }
.about-visual {
  aspect-ratio: 4/5; border-radius: 12px; border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--charcoal-alt), var(--black));
  display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden;
}
.about-visual .about-logo { width: 58%; opacity: .95; position: relative; }
.about-visual::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(217,164,65,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(217,164,65,.06) 1px, transparent 1px);
  background-size: 32px 32px;
}
.about-text p { color: var(--gray); margin-bottom: 18px; font-size: 1.02rem; }

/* ---------- Timeline (leistungen detail) ---------- */
.service-detail {
  display: grid; grid-template-columns: 90px 1fr 240px; gap: 28px; align-items: center;
  padding: 40px 0; border-top: 1px solid var(--line);
}
.service-detail:last-child { border-bottom: 1px solid var(--line); }
.service-detail .icon { width: 52px; height: 52px; color: var(--accent); align-self: start; }
.service-detail h3 { font-size: 1.3rem; text-transform: none; letter-spacing: 0; margin-bottom: 10px; }
.service-detail p { color: var(--gray); margin-bottom: 14px; max-width: 680px; }
.service-detail ul { display: flex; flex-wrap: wrap; gap: 10px; }
.service-detail li {
  font-size: 0.82rem; color: var(--accent-bright); border: 1px solid var(--accent-dim);
  padding: 6px 14px; border-radius: 30px; background: rgba(217,164,65,.06);
}
.service-photo {
  aspect-ratio: 4/3; border-radius: 8px; overflow: hidden; border: 1px solid var(--line);
}
.service-photo img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(.92) brightness(.92);
  transition: transform .5s var(--ease), filter .5s;
}
.service-detail:hover .service-photo img { transform: scale(1.06); filter: saturate(1) brightness(1); }
@media (max-width: 900px) {
  .service-detail { grid-template-columns: 90px 1fr; }
  .service-photo { display: none; }
}
@media (max-width: 640px) { .service-detail { grid-template-columns: 1fr; } }

/* ---------- Projects ---------- */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 940px) { .projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .projects-grid { grid-template-columns: 1fr; } }
.project-card {
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  background: var(--charcoal); transition: transform .4s var(--ease), border-color .4s;
}
.project-card:hover { transform: translateY(-6px); border-color: var(--accent-dim); }
.project-thumb {
  aspect-ratio: 4/3; position: relative; overflow: hidden;
  background: linear-gradient(150deg, var(--charcoal-alt), var(--black));
  display: flex; align-items: center; justify-content: center;
}
.project-thumb svg { width: 40%; opacity: .5; transition: transform .5s var(--ease), opacity .5s; }
.project-card:hover .project-thumb svg { transform: scale(1.12); opacity: .8; }
.project-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(.92) brightness(.92);
  transition: transform .5s var(--ease), filter .5s;
}
.project-card:hover .project-thumb img { transform: scale(1.06); filter: saturate(1) brightness(1); }
.project-thumb::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,10,11,0) 55%, rgba(10,10,11,.55) 100%);
  pointer-events: none;
}
.project-info { padding: 22px 24px; }
.project-info .tag { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; display: block; }
.project-info h3 { font-size: 1.05rem; text-transform: none; letter-spacing: 0; }
.project-info p { color: var(--gray); font-size: 0.88rem; margin-top: 8px; }
.projects-note {
  margin-top: 40px; padding: 22px 26px; border: 1px dashed var(--line); border-radius: 8px;
  color: var(--gray-dim); font-size: 0.9rem; text-align: center;
}

/* ---------- Process steps ---------- */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
@media (max-width: 860px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .process-grid { grid-template-columns: 1fr; } }
.process-step { position: relative; padding-top: 10px; }
.process-step .step-num {
  font-family: var(--font-head); font-size: 2.6rem; font-weight: 800; color: transparent;
  -webkit-text-stroke: 1.5px var(--line); display: block; margin-bottom: 10px;
}
.process-step h4 { font-size: 1rem; text-transform: none; letter-spacing: 0; margin-bottom: 10px; }
.process-step p { color: var(--gray); font-size: 0.92rem; }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info-list { margin-top: 28px; }
.contact-info-item { display: flex; gap: 18px; padding: 20px 0; border-top: 1px solid var(--line); }
.contact-info-item:last-child { border-bottom: 1px solid var(--line); }
.contact-info-item .icon { width: 26px; height: 26px; color: var(--accent); flex-shrink: 0; margin-top: 3px; }
.contact-info-item h4 { font-size: 0.95rem; text-transform: none; letter-spacing: 0; margin-bottom: 4px; }
.contact-info-item p, .contact-info-item a { color: var(--gray); font-size: 0.94rem; }
.contact-info-item a:hover { color: var(--accent); }
.map-frame { margin-top: 30px; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); filter: grayscale(1) invert(0.92) contrast(0.85); }
.map-frame iframe { width: 100%; height: 260px; border: 0; display: block; }

.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-size: 0.8rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gray); margin-bottom: 10px; font-family: var(--font-head); font-weight: 700; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; background: var(--charcoal); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; color: var(--white); font-family: var(--font-body); font-size: 0.96rem;
  transition: border-color .3s, background .3s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent); background: var(--charcoal-alt);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.form-note { font-size: 0.82rem; color: var(--gray-dim); margin-top: 16px; }
.form-success {
  display: none; background: rgba(217,164,65,.08); border: 1px solid var(--accent-dim);
  padding: 18px 20px; border-radius: var(--radius); color: var(--accent-bright); margin-top: 20px; font-size: 0.92rem;
}

/* ---------- Legal pages ---------- */
.legal-content { max-width: 820px; }
.legal-content h2 { font-size: 1.3rem; text-transform: none; letter-spacing: 0; margin: 36px 0 14px; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p, .legal-content li { color: var(--gray); margin-bottom: 12px; font-size: 0.98rem; }
.legal-content li { margin-left: 20px; list-style: disc; }
.legal-content a { color: var(--accent); }
.legal-content strong { color: var(--white); }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; bottom: 28px; right: 28px; z-index: 300;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--accent); color: var(--black);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .3s, transform .3s, visibility .3s;
  cursor: pointer; border: none;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--accent-bright); }