/* ── BUNKER-BAU · MAIN STYLESHEET ── */
/* Fonts: Bebas Neue · DM Sans · DM Mono */

:root {
  --black: #0a0a0a;
  --anthracite: #1a1a1a;
  --anthracite-mid: #252525;
  --anthracite-light: #2e2e2e;
  --concrete: #3d3d3d;
  --concrete-light: #5a5a5a;
  --concrete-pale: #8a8a8a;
  --off-white: #e8e4df;
  --white: #f5f2ee;
  --accent: #c8a96e;
  --accent-dim: #9a7d4a;
  --danger: #8b2020;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--off-white);
  font-family: 'DM Sans', sans-serif;
  font-weight: 300;
  overflow-x: hidden;
  cursor: crosshair;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.6;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 4rem;
  background: linear-gradient(to bottom, rgba(10,10,10,0.97), transparent);
  backdrop-filter: blur(4px);
}

.nav-logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.6rem;
  letter-spacing: 0.15em;
  color: var(--white);
  text-decoration: none;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--concrete-pale);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--accent); }

.nav-cta {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--black);
  padding: 0.65rem 1.4rem;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--off-white); }

/* ── PAGE HERO (Unterseiten) ── */
.page-hero {
  padding: 10rem 4rem 6rem;
  background: var(--anthracite);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--anthracite-light);
}
.page-hero::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(to left, rgba(200,169,110,0.03), transparent);
  pointer-events: none;
}
.page-hero-tag {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.page-hero-tag::before {
  content: '';
  display: block;
  width: 2rem;
  height: 1px;
  background: var(--accent);
}
.page-hero h1 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(3rem, 6vw, 6rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  color: var(--white);
  margin-bottom: 1.5rem;
  animation: none;
}
.page-hero-sub {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--concrete-pale);
  max-width: 56ch;
}

/* ── BREADCRUMB ── */
.breadcrumb {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1.5rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--concrete-pale);
}
.breadcrumb a {
  color: var(--concrete-pale);
  text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--concrete); }

/* ── MARQUEE ── */
.marquee-wrap {
  background: var(--accent);
  padding: 0.8rem 0;
  overflow: hidden;
}
.marquee-track {
  display: flex;
  gap: 0;
  animation: marquee 22s linear infinite;
  white-space: nowrap;
}
.marquee-item {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.25em;
  color: var(--black);
  padding: 0 3rem;
  flex-shrink: 0;
}
.marquee-sep { color: rgba(0,0,0,0.3); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ── SECTION BASICS ── */
section { padding: 7rem 4rem; }

.section-tag {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-tag::before {
  content: '';
  display: block;
  width: 1.5rem;
  height: 1px;
  background: var(--accent);
}

h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: 0.03em;
  color: var(--white);
  line-height: 1;
  margin-bottom: 1.5rem;
}
h3 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.6rem;
  letter-spacing: 0.06em;
  color: var(--white);
  margin-bottom: 0.8rem;
}

/* ── BUTTONS ── */
.btn-primary {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--black);
  padding: 1rem 2rem;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
  display: inline-block;
}
.btn-primary:hover { background: var(--off-white); transform: translateY(-2px); }

.btn-secondary {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--concrete-pale);
  text-decoration: none;
  border-bottom: 1px solid var(--concrete);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.btn-secondary:hover { color: var(--white); border-color: var(--white); }

/* ── LEISTUNGEN GRID ── */
.leistungen-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 4rem;
  background: var(--concrete);
}
.leistung-card {
  background: var(--anthracite);
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.leistung-card:hover { background: var(--anthracite-mid); }
.leistung-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.leistung-card:hover::before { transform: scaleX(1); }
.leistung-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 3.5rem;
  color: rgba(200,169,110,0.08);
  line-height: 1;
  margin-bottom: 1.5rem;
}
.leistung-icon {
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 1.2rem;
  color: var(--accent);
}
.leistung-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--white);
  margin-bottom: 0.8rem;
}
.leistung-text {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--concrete-pale);
}

/* ── STANDARDS ── */
.standards-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--concrete);
}
.standard-item {
  background: var(--anthracite);
  padding: 1.5rem;
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  transition: background 0.2s;
  cursor: default;
}
.standard-item:hover { background: var(--anthracite-mid); }
.standard-code {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 0.15rem;
}
.standard-desc {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--concrete-pale);
}
.standard-desc strong {
  display: block;
  color: var(--off-white);
  font-weight: 400;
  margin-bottom: 0.2rem;
  font-size: 0.9rem;
}

/* ── PROZESS ── */
.prozess-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 4rem;
  position: relative;
}
.prozess-steps::before {
  content: '';
  position: absolute;
  top: 2rem;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent-dim), var(--accent-dim), transparent);
}
.prozess-step { padding: 0 1.5rem; position: relative; }
.step-dot {
  width: 1rem;
  height: 1rem;
  background: var(--anthracite);
  border: 2px solid var(--accent);
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}
.step-num {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.step-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: var(--white);
  margin-bottom: 0.6rem;
}
.step-text { font-size: 0.8rem; line-height: 1.6; color: var(--concrete-pale); }

/* ── ÜBER ── */
.ueber-box {
  background: var(--anthracite);
  border: 1px solid var(--anthracite-light);
  padding: 3rem;
  position: relative;
}
.ueber-box::before {
  content: '';
  position: absolute;
  top: -1px; left: 3rem;
  width: 4rem;
  height: 2px;
  background: var(--accent);
}
.baumeister-name {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2rem;
  letter-spacing: 0.1em;
  color: var(--white);
  margin-bottom: 0.3rem;
}
.baumeister-title {
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.baumeister-text { font-size: 0.9rem; line-height: 1.8; color: var(--concrete-pale); }
.ueber-corner {
  position: absolute;
  bottom: -1rem;
  right: -1rem;
  width: 5rem;
  height: 5rem;
  border-right: 1px solid var(--accent-dim);
  border-bottom: 1px solid var(--accent-dim);
}
.ueber-punkte { list-style: none; margin-top: 2rem; display: flex; flex-direction: column; gap: 0.8rem; }
.ueber-punkte li {
  font-size: 0.85rem;
  color: var(--off-white);
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
}
.ueber-punkte li::before {
  content: '—';
  color: var(--accent);
  flex-shrink: 0;
  font-family: 'DM Mono', monospace;
}

/* ── FORMULAR ── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--concrete);
}
.form-field {
  background: var(--anthracite-mid);
  padding: 1.2rem 1.4rem;
}
.form-field.full { grid-column: 1 / -1; }
.form-field label {
  display: block;
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  color: var(--off-white);
  font-weight: 300;
  resize: none;
}
.form-field select option { background: var(--anthracite); }
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--concrete); }
.form-submit {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1px;
  background: var(--concrete);
}
.form-note {
  background: var(--anthracite-mid);
  padding: 1.2rem 1.4rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--concrete-pale);
  display: flex;
  align-items: center;
}
.btn-submit {
  background: var(--accent);
  color: var(--black);
  border: none;
  cursor: pointer;
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 1.5rem 2.5rem;
  transition: background 0.2s;
  white-space: nowrap;
}
.btn-submit:hover { background: var(--off-white); }

/* ── PROJEKT KARTEN ── */
.projekt-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--concrete);
  margin-top: 4rem;
}
.projekt-card {
  background: var(--anthracite);
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.projekt-card:hover { background: var(--anthracite-mid); }
.projekt-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--anthracite-mid);
  border-bottom: 1px solid var(--anthracite-light);
  overflow: hidden;
}
.projekt-card-body { padding: 2rem; }
.projekt-tag {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}
.projekt-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.06em;
  color: var(--white);
  margin-bottom: 0.6rem;
}
.projekt-text { font-size: 0.82rem; line-height: 1.6; color: var(--concrete-pale); }
.projekt-specs {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--anthracite-light);
}
.projekt-spec-item { font-family: 'DM Mono', monospace; font-size: 0.6rem; letter-spacing: 0.1em; color: var(--concrete-pale); }
.projekt-spec-val { color: var(--off-white); display: block; font-size: 0.75rem; margin-bottom: 0.15rem; }

/* ── ARTIKEL KARTEN ── */
.artikel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--concrete);
  margin-top: 4rem;
}
.artikel-card {
  background: var(--anthracite);
  padding: 2.5rem 2rem;
  position: relative;
  transition: background 0.3s;
  text-decoration: none;
  display: block;
}
.artikel-card:hover { background: var(--anthracite-mid); }
.artikel-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.artikel-card:hover::after { transform: scaleX(1); }
.artikel-kategorie {
  font-family: 'DM Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.artikel-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 0.8rem;
}
.artikel-text { font-size: 0.82rem; line-height: 1.7; color: var(--concrete-pale); margin-bottom: 1.2rem; }
.artikel-meta {
  font-family: 'DM Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  color: var(--concrete);
}

/* ── FAQ ── */
.faq-list { margin-top: 3rem; display: flex; flex-direction: column; gap: 1px; background: var(--concrete); }
.faq-item { background: var(--anthracite); overflow: hidden; }
.faq-question {
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background 0.2s;
  gap: 2rem;
}
.faq-question:hover { background: var(--anthracite-mid); }
.faq-question-text {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--off-white);
}
.faq-icon {
  font-family: 'DM Mono', monospace;
  font-size: 1.2rem;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 0.3s;
  line-height: 1;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer { max-height: 400px; }
.faq-answer-inner {
  padding: 0 2rem 1.5rem;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--concrete-pale);
  border-top: 1px solid var(--anthracite-light);
  padding-top: 1.2rem;
}

/* ── VIZ / SVG ── */
.viz-container {
  background: var(--anthracite);
  border: 1px solid var(--anthracite-light);
  padding: 2rem;
  position: relative;
}
.viz-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.viz-caption {
  margin-top: 1rem;
  font-family: 'DM Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  color: var(--concrete-pale);
  text-align: center;
}

/* ── STATS BAR ── */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--concrete);
  margin-top: 4rem;
}
.stat-item {
  background: var(--anthracite);
  padding: 2rem;
  text-align: center;
}
.stat-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 3rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  line-height: 1;
  display: block;
}
.stat-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--concrete-pale);
  margin-top: 0.4rem;
}

/* ── CTA BANNER ── */
.cta-banner {
  background: var(--anthracite);
  border-top: 1px solid var(--anthracite-light);
  padding: 5rem 4rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}
.cta-banner h2 { margin-bottom: 0.5rem; }
.cta-banner p { font-size: 0.9rem; color: var(--concrete-pale); line-height: 1.7; }
.cta-banner-actions { display: flex; gap: 1.5rem; align-items: center; flex-shrink: 0; }

/* ── FOOTER ── */
footer {
  background: var(--black);
  border-top: 1px solid var(--anthracite-light);
  padding: 3rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-logo {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 1.3rem;
  letter-spacing: 0.15em;
  color: var(--concrete-pale);
}
.footer-logo span { color: var(--accent); }
.footer-text {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--concrete);
  text-align: center;
}
.footer-links { display: flex; gap: 2rem; list-style: none; }
.footer-links a {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--concrete);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

/* ── LEGAL PAGES ── */
.legal-content {
  max-width: 72ch;
  margin: 0 auto;
}
.legal-content h2 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  margin-bottom: 1rem;
  margin-top: 3rem;
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content p {
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--concrete-pale);
  margin-bottom: 1rem;
}
.legal-content ul {
  margin: 0.8rem 0 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.legal-content li { font-size: 0.88rem; color: var(--concrete-pale); line-height: 1.7; }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  nav { padding: 1.2rem 2rem; }
  .nav-links { display: none; }
  section { padding: 5rem 2rem; }
  .page-hero { padding: 8rem 2rem 4rem; }
  .leistungen-grid { grid-template-columns: 1fr 1fr; }
  .projekt-grid { grid-template-columns: 1fr 1fr; }
  .artikel-grid { grid-template-columns: 1fr 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .prozess-steps { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .prozess-steps::before { display: none; }
  .cta-banner { grid-template-columns: 1fr; gap: 2rem; }
  footer { flex-direction: column; gap: 1.5rem; text-align: center; }
}
@media (max-width: 640px) {
  .leistungen-grid, .projekt-grid, .artikel-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-submit { grid-template-columns: 1fr; }
  .prozess-steps { grid-template-columns: 1fr; }
  h2 { font-size: 2rem; }
}