/* =========================================================
   Bauunternehmung Gebr. Krug GmbH – style.css
   Design: Modern & Schlicht
   ========================================================= */

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Open Sans', Arial, sans-serif; font-size: 16px; line-height: 1.7; color: #444; background: #fff; }
img { max-width: 100%; display: block; }
a { color: inherit; }

/* --- Variables --- */
:root {
  --black:   #111111;
  --dark:    #1c1c1c;
  --grey:    #888888;
  --border:  #e5e5e5;
  --light:   #f5f5f5;
  --accent:  #1e3d6b;
  --accent-h:#254d85;
  --white:   #ffffff;
  --t:       .25s ease;
  --max:     1160px;
}

/* --- Container --- */
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* --- Utilities --- */
.fade-in { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity: 1; transform: none; }

/* =========================================================
   TYPOGRAPHY
   ========================================================= */
h1, h2 {
  font-family: 'Oswald', 'Arial Narrow', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .03em;
  line-height: 1.1;
  color: var(--black);
}
h3, h4 {
  font-family: 'Oswald', 'Arial Narrow', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--black);
}

.eyebrow {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--accent);
  margin-bottom: 10px;
}
.divider {
  display: block;
  width: 40px;
  height: 3px;
  background: var(--accent);
  margin: 12px 0 18px;
}
.centered .divider { margin-left: auto; margin-right: auto; }

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  font-family: 'Oswald', sans-serif;
  font-size: .88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--t);
  line-height: 1;
}
.btn-primary  { background: var(--accent);  color: var(--white); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-h); border-color: var(--accent-h); }
.btn-dark     { background: var(--black);   color: var(--white); border-color: var(--black); }
.btn-dark:hover { background: #333; border-color: #333; }
.btn-outline  { background: transparent;    color: var(--white); border-color: rgba(255,255,255,.4); }
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.08); }
.btn-outline-dark { background: transparent; color: var(--black); border-color: var(--black); }
.btn-outline-dark:hover { background: var(--black); color: var(--white); }
.btn-white    { background: var(--white);   color: var(--black); border-color: var(--white); }
.btn-white:hover { background: var(--light); border-color: var(--light); }
.btn-accent-outline { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-accent-outline:hover { background: var(--accent); color: var(--white); }

/* =========================================================
   NAVIGATION
   ========================================================= */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--t);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-logo { text-decoration: none; display: flex; align-items: center; gap: 12px; }
.nav-logo-img { height: 40px; width: auto; flex-shrink: 0; }
.nav-logo-text { line-height: 1.15; }
.nav-logo-name { font-family: 'Oswald', sans-serif; font-size: 1rem; font-weight: 700; color: var(--black); text-transform: uppercase; letter-spacing: .06em; display: block; }
.nav-logo-sub  { font-size: .58rem; color: var(--accent); text-transform: uppercase; letter-spacing: .16em; display: block; }

.nav-menu { display: flex; list-style: none; }
.nav-menu a {
  display: block; padding: 10px 15px;
  color: #666; text-decoration: none;
  font-family: 'Oswald', sans-serif; font-size: .84rem;
  text-transform: uppercase; letter-spacing: .08em;
  transition: color var(--t); position: relative;
}
.nav-menu a::after {
  content: ''; position: absolute; bottom: 7px; left: 15px; right: 15px;
  height: 1px; background: var(--accent); transform: scaleX(0); transition: transform var(--t);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--black); }
.nav-menu a:hover::after, .nav-menu a.active::after { transform: scaleX(1); }
.nav-cta { background: var(--accent) !important; color: var(--white) !important; padding: 8px 20px !important; }
.nav-cta:hover { background: var(--accent-h) !important; }
.nav-cta::after { display: none !important; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 5px; background: none; border: none; }
.hamburger span { display: block; width: 22px; height: 1.5px; background: var(--black); transition: var(--t); }
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  min-height: 100vh;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  position: relative; overflow: hidden;
}
/* Diagonales Schraffur-Muster */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    transparent 0,
    transparent 28px,
    rgba(30, 61, 107, 0.04) 28px,
    rgba(30, 61, 107, 0.04) 29px
  );
  z-index: 0;
  pointer-events: none;
}
/* Typografisches Wasserzeichen */
.hero::after {
  content: '1926';
  position: absolute;
  right: -2%;
  bottom: -14%;
  font-family: 'Oswald', sans-serif;
  font-weight: 700;
  font-size: clamp(14rem, 30vw, 28rem);
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(30, 61, 107, 0.07);
  line-height: 1;
  letter-spacing: -0.02em;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.hero .container { position: relative; z-index: 1; padding-top: 68px; width: 100%; }
.hero-content { max-width: 680px; text-align: left; }

.hero-label {
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 32px;
}
.hero-label-line { width: 32px; height: 1px; background: var(--accent); }
.hero-label span { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .22em; color: var(--accent); }

.hero h1 { font-size: clamp(2.8rem, 7vw, 5.5rem); color: var(--black); }
.hero h1 em { color: var(--accent); font-style: normal; }

.hero-sub {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(.95rem, 2vw, 1.4rem);
  color: #888;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin: 20px 0 32px;
}
.hero-text { font-size: .97rem; color: #666; max-width: 480px; margin-bottom: 40px; line-height: 1.9; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* =========================================================
   STATS BAR
   ========================================================= */
.stats-bar { background: var(--accent); border-top: none; border-bottom: none; padding: 32px 0; }
.stats-bar .container { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-item { text-align: center; padding: 8px 16px; border-right: 1px solid rgba(255,255,255,.25); }
.stat-item:last-child { border-right: none; }
.stat-number { font-family: 'Oswald', sans-serif; font-size: 2.4rem; font-weight: 700; color: var(--white); line-height: 1; display: block; }
.stat-label  { font-size: .7rem; color: rgba(255,255,255,.8); text-transform: uppercase; letter-spacing: .14em; margin-top: 4px; }

/* =========================================================
   SECTION BASE
   ========================================================= */
.section      { padding: 96px 0; }
.section-grey { background: var(--light); }
.section-dark { background: var(--black); }

.section-header { margin-bottom: 56px; }
.section-header.centered { text-align: center; }
.section-title { font-size: clamp(1.8rem, 3.5vw, 2.6rem); margin-bottom: 16px; }
.section-dark .section-title, .section-dark h2 { color: var(--white); }
.section-lead {
  font-size: 1rem; color: #666; max-width: 600px; line-height: 1.85;
}
.centered .section-lead { margin: 0 auto; }
.section-dark .section-lead { color: rgba(255,255,255,.5); }

/* =========================================================
   SERVICES GRID
   ========================================================= */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.service-card {
  background: var(--white);
  padding: 40px 28px 36px;
  position: relative;
  overflow: hidden;
  transition: background var(--t), box-shadow var(--t);
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--accent); transform: scaleX(0); transition: transform var(--t);
}
.service-card:hover { background: var(--light); }
.service-card:hover::before { transform: scaleX(1); }

.service-num { font-family: 'Oswald', sans-serif; font-size: .72rem; font-weight: 700; letter-spacing: .18em; color: var(--accent); margin-bottom: 20px; display: block; }
.service-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--black); margin-bottom: 12px; letter-spacing: .01em; }
.service-card p  { font-size: .88rem; color: #666; line-height: 1.75; }
.service-link {
  display: inline-block; margin-top: 20px;
  font-family: 'Oswald', sans-serif; font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .12em;
  color: var(--black); text-decoration: none;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px; transition: border-color var(--t), color var(--t);
}
.service-link:hover { border-color: var(--accent); color: var(--accent); }

/* =========================================================
   ABOUT PREVIEW
   ========================================================= */
.about-preview { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-image-placeholder {
  background: var(--light);
  aspect-ratio: 4/3;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  font-size: .75rem; letter-spacing: .2em; color: #bbb; text-transform: uppercase;
  font-family: 'Oswald', sans-serif; position: relative;
}
.about-image-wrapper {
  position: relative;
  line-height: 0;
}
.about-img {
  width: 100%; aspect-ratio: 4/3;
  object-fit: cover; object-position: center;
  display: block;
}
.about-badge {
  position: absolute; bottom: -16px; right: -16px;
  width: 100px; height: 100px;
  background: var(--accent);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  z-index: 1;
}
.about-badge-year  { font-family: 'Oswald', sans-serif; font-size: 1.9rem; font-weight: 700; color: var(--white); line-height: 1; }
.about-badge-label { font-size: .6rem; color: rgba(255,255,255,.8); text-transform: uppercase; letter-spacing: .12em; }
.about-text .section-lead { margin-bottom: 20px; }
.about-list { list-style: none; margin: 16px 0 32px; }
.about-list li { padding: 7px 0 7px 16px; position: relative; color: #555; font-size: .92rem; }
.about-list li::before { content: ''; position: absolute; left: 0; top: 17px; width: 6px; height: 1px; background: var(--accent); }

/* =========================================================
   PROJECT PREVIEW
   ========================================================= */
.project-preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); }
.project-card { position: relative; overflow: hidden; cursor: pointer; background: #ddd; }
.project-card-img { aspect-ratio: 4/3; transition: transform .5s ease; position: relative; overflow: hidden; }
.project-card-img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }
.project-card:hover .project-card-img { transform: scale(1.04); }
.project-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(17,17,17,.88) 0%, transparent 60%);
  padding: 20px; display: flex; flex-direction: column; justify-content: flex-end;
  opacity: 0; transition: opacity var(--t);
}
.project-card:hover .project-card-overlay { opacity: 1; }
.project-card-label { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .16em; color: rgba(255,255,255,.6); margin-bottom: 4px; font-family: 'Oswald', sans-serif; }
.project-card-title { font-size: .95rem; color: var(--white); font-family: 'Oswald', sans-serif; font-weight: 600; }
.preview-cta { text-align: center; margin-top: 40px; }

/* =========================================================
   PAGE HEADER (inner pages)
   ========================================================= */
.page-header { background: var(--light); border-bottom: 1px solid var(--border); padding: 140px 0 72px; }
.page-header h1 { font-size: clamp(2rem, 5vw, 3.5rem); color: var(--black); margin-bottom: 12px; }
.page-header p  { font-size: 1rem; color: #666; max-width: 520px; line-height: 1.8; }
.breadcrumb { display: flex; gap: 8px; align-items: center; margin-top: 20px; }
.breadcrumb a   { font-size: .78rem; color: #999; text-decoration: none; transition: color var(--t); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep     { font-size: .78rem; color: #ccc; }
.breadcrumb .current { font-size: .78rem; color: var(--accent); }

/* =========================================================
   ÜBER UNS
   ========================================================= */
.story-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items: start; }
.story-text p { font-size: .94rem; color: #555; line-height: 1.9; margin-bottom: 16px; }
.story-images { display: flex; flex-direction: column; gap: 4px; }
.story-img-main { background: var(--light); aspect-ratio: 3/2; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; font-family: 'Oswald', sans-serif; font-size: .72rem; letter-spacing: .2em; color: #bbb; text-transform: uppercase; }
.story-img-row { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.story-img-small { background: var(--light); aspect-ratio: 1/1; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; font-family: 'Oswald', sans-serif; font-size: .68rem; letter-spacing: .15em; color: #bbb; text-transform: uppercase; }

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--border); }
.value-card { background: var(--white); padding: 36px 28px; position: relative; }
.value-card::after { content: ''; position: absolute; top: 0; left: 0; width: 0; height: 2px; background: var(--accent); transition: width .4s ease; }
.value-card:hover::after { width: 100%; }
.value-num { font-family: 'Oswald', sans-serif; font-size: .7rem; font-weight: 700; letter-spacing: .18em; color: var(--accent); margin-bottom: 14px; display: block; }
.value-card h3 { font-size: 1rem; color: var(--black); margin-bottom: 10px; letter-spacing: .01em; }
.value-card p  { font-size: .87rem; color: #666; line-height: 1.75; }

.timeline { position: relative; padding-left: 32px; }
.timeline::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 1px; background: var(--border); }
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item::before { content: ''; position: absolute; left: -36px; top: 7px; width: 8px; height: 8px; background: var(--accent); border-radius: 50%; }
.timeline-year { font-family: 'Oswald', sans-serif; font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .16em; color: var(--accent); margin-bottom: 6px; }
.timeline-item h4 { font-size: .97rem; color: var(--black); margin-bottom: 6px; }
.timeline-item p  { font-size: .87rem; color: #666; line-height: 1.7; }

.cert-bar { background: var(--light); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 32px 0; }
.cert-items { display: flex; align-items: center; justify-content: center; gap: 56px; flex-wrap: wrap; }
.cert-item { display: flex; align-items: center; gap: 12px; color: #666; font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; text-decoration: none; transition: color var(--t); }
.cert-item:hover { color: var(--accent); }
.cert-icon { width: 36px; height: 36px; background: var(--black); display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 1rem; flex-shrink: 0; }

/* =========================================================
   PROJEKTE / GALLERY
   ========================================================= */
.filter-bar { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 32px; }
.filter-btn {
  padding: 7px 20px; font-family: 'Oswald', sans-serif; font-size: .78rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: .1em;
  border: 1px solid var(--border); background: transparent; color: #888; cursor: pointer; transition: var(--t);
}
.filter-btn:hover, .filter-btn.active { background: var(--black); border-color: var(--black); color: var(--white); }

.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); }
.gallery-item { position: relative; overflow: hidden; cursor: pointer; }
.gallery-item-img { aspect-ratio: 4/3; width: 100%; transition: transform .5s ease; position: relative; overflow: hidden; }
.gallery-item-img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }
.gallery-item:hover .gallery-item-img { transform: scale(1.04); }
.gallery-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; font-family: 'Oswald', sans-serif; font-size: .7rem; letter-spacing: .2em; color: rgba(255,255,255,.2); text-transform: uppercase; }
.gallery-item-overlay {
  position: absolute; inset: 0;
  background: rgba(17,17,17,.75);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--t); text-align: center; padding: 20px;
}
.gallery-item:hover .gallery-item-overlay { opacity: 1; }
.gallery-item-cat   { font-family: 'Oswald', sans-serif; font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .18em; color: rgba(255,255,255,.6); margin-bottom: 6px; }
.gallery-item-title { font-size: .92rem; color: var(--white); font-family: 'Oswald', sans-serif; font-weight: 600; }

/* =========================================================
   KONTAKT
   ========================================================= */
.contact-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 80px; align-items: start; }
.contact-info-title { font-size: 1.2rem; color: var(--black); margin-bottom: 28px; }
.contact-detail { display: flex; gap: 16px; margin-bottom: 24px; align-items: flex-start; }
.contact-icon { width: 40px; height: 40px; background: var(--black); flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: var(--white); font-size: 1rem; }
.contact-detail-text strong { display: block; font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; color: #999; margin-bottom: 2px; }
.contact-detail-text a, .contact-detail-text p { color: var(--black); text-decoration: none; font-size: .93rem; transition: color var(--t); }
.contact-detail-text a:hover { color: var(--accent); }
.opening-hours { margin-top: 28px; border-top: 1px solid var(--border); padding-top: 24px; }
.opening-hours h4 { font-size: .88rem; color: var(--black); margin-bottom: 10px; }
.opening-hours p  { font-size: .86rem; color: #666; margin-bottom: 4px; }

.contact-form-title { font-size: 1.2rem; color: var(--black); margin-bottom: 4px; }
.contact-form-sub   { font-size: .87rem; color: #888; margin-bottom: 24px; }
.contact-form { display: flex; flex-direction: column; gap: 14px; }
.hp-field {
  position: absolute; left: -9999px; top: -9999px;
  width: 1px; height: 1px; overflow: hidden;
}
.form-row     { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group   { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: #888; }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 14px; border: 1px solid var(--border); background: var(--white);
  font-size: .93rem; font-family: inherit; color: var(--black);
  outline: none; transition: border-color var(--t); border-radius: 0; appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--black); }
.form-group textarea { min-height: 130px; resize: vertical; }
.form-note { font-size: .74rem; color: #999; }
.form-note a { color: var(--accent); text-decoration: none; }
.form-checkbox-group { gap: 0; }
.form-checkbox-group .form-checkbox {
  display: flex; align-items: flex-start; gap: 10px; cursor: pointer;
  text-transform: none; font-weight: 400; letter-spacing: normal;
}
.form-checkbox input[type="checkbox"] {
  appearance: none; -webkit-appearance: none;
  width: 17px; height: 17px; margin: 2px 0 0; padding: 0; flex-shrink: 0;
  border: 1px solid var(--border); border-radius: 2px; background: var(--white);
  position: relative; cursor: pointer; transition: background var(--t), border-color var(--t);
}
.form-checkbox input[type="checkbox"]:checked {
  background: var(--accent); border-color: var(--accent);
}
.form-checkbox input[type="checkbox"]:checked::after {
  content: ""; position: absolute; left: 5px; top: 3px;
  width: 4px; height: 8px;
  border: solid var(--white); border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.form-checkbox input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.form-checkbox span { font-size: .8rem; color: #666; line-height: 1.5; }
.form-checkbox span a { color: var(--accent); }
.form-success { display: none; background: #f0faf0; border: 1px solid #8bc34a; padding: 16px; color: #388e3c; font-size: .9rem; }
.form-error   { display: none; background: #fff5f5; border: 1px solid #ef9a9a; padding: 16px; color: #c62828; font-size: .9rem; }

/* =========================================================
   MAP PLACEHOLDER
   ========================================================= */
.map-placeholder {
  margin-top: 28px; background: var(--light); aspect-ratio: 16/9; border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Oswald', sans-serif; font-size: .72rem; letter-spacing: .2em; color: #bbb; text-transform: uppercase;
}

/* =========================================================
   MITGLIEDSCHAFTEN
   ========================================================= */
.memberships-bar {
  background: var(--light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 72px 0;
}
.memberships-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 72px;
  flex-wrap: wrap;
}
.membership-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
  text-decoration: none;
}
.membership-item img {
  height: 90px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
  filter: grayscale(30%);
  transition: filter var(--t);
}
.membership-item:hover img { filter: grayscale(0%); }
.membership-item span {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: #888;
  max-width: 200px;
  line-height: 1.6;
}

/* =========================================================
   CTA SECTION
   ========================================================= */
.cta-section { background: var(--accent); padding: 80px 0; text-align: center; }
.cta-section h2 { color: var(--white); font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 14px; }
.cta-section p  { color: rgba(255,255,255,.85); font-size: .97rem; max-width: 500px; margin: 0 auto 32px; line-height: 1.85; }

/* =========================================================
   SERVICE SUBPAGE (leistungen/)
   ========================================================= */
.service-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.service-detail-text p { font-size: .94rem; color: #555; line-height: 1.9; margin-bottom: 16px; }
.service-list { list-style: none; margin: 0 0 28px; }
.service-list li { display: flex; gap: 14px; align-items: flex-start; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: .93rem; color: #444; }
.service-list li::before { content: '—'; color: var(--accent); font-weight: 700; flex-shrink: 0; margin-top: 1px; }
.service-list li:first-child { border-top: 1px solid var(--border); }

.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--border); }
.why-card { background: var(--white); padding: 32px 28px; }
.why-card h4 { font-size: .97rem; color: var(--black); margin-bottom: 8px; }
.why-card p  { font-size: .87rem; color: #666; line-height: 1.75; }
.why-num { font-family: 'Oswald', sans-serif; font-size: .7rem; font-weight: 700; letter-spacing: .18em; color: var(--accent); margin-bottom: 12px; display: block; }

.service-img-placeholder {
  background: var(--light); border: 1px solid var(--border);
  aspect-ratio: 3/4; display: flex; align-items: center; justify-content: center;
  font-family: 'Oswald', sans-serif; font-size: .72rem; letter-spacing: .2em; color: #bbb; text-transform: uppercase;
  position: sticky; top: 88px;
}
.service-img {
  width: 100%; aspect-ratio: 3/4;
  object-fit: cover; object-position: center;
  display: block;
  position: sticky; top: 88px;
}

/* =========================================================
   NAV DROPDOWN
   ========================================================= */
.nav-has-dropdown { position: relative; }
.nav-dropdown {
  position: absolute; top: 100%; left: 0;
  list-style: none;
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent);
  min-width: 230px;
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: opacity var(--t), transform var(--t), visibility var(--t);
  z-index: 100;
}
.nav-has-dropdown:hover .nav-dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-dropdown li a {
  display: block; padding: 10px 16px;
  font-family: 'Oswald', sans-serif; font-size: .78rem;
  font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
  color: #555; white-space: nowrap;
  border-bottom: 1px solid var(--border);
  transition: color var(--t), background var(--t);
}
.nav-dropdown li a::after { display: none !important; }
.nav-dropdown li:last-child a { border-bottom: none; }
.nav-dropdown li a:hover { color: var(--accent); background: var(--light); }
.nav-arrow {
  font-size: .55rem; margin-left: 4px;
  display: inline-block; vertical-align: middle;
  transition: transform var(--t);
}
.nav-has-dropdown:hover .nav-arrow { transform: rotate(180deg); }

/* =========================================================
   FOOTER
   ========================================================= */
footer { background: var(--light); border-top: 1px solid var(--border); color: #666; padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-logo-img { height: 40px; width: auto; margin-bottom: 14px; }
.footer-brand .nav-logo-name { font-size: 1rem; display: block; margin-bottom: 2px; color: var(--black); }
.footer-brand .nav-logo-sub  { margin-bottom: 12px; display: block; }
.footer-brand p { font-size: .83rem; line-height: 1.75; color: #888; max-width: 280px; }
.footer-col h4  { font-size: .75rem; text-transform: uppercase; letter-spacing: .14em; color: var(--black); margin-bottom: 14px; font-family: 'Oswald', sans-serif; }
.footer-col ul  { list-style: none; }
.footer-col ul li { margin-bottom: 7px; }
.footer-col ul li a { color: #777; text-decoration: none; font-size: .85rem; transition: color var(--t); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p, .footer-bottom a { font-size: .76rem; color: #999; text-decoration: none; }
.footer-bottom a:hover { color: var(--accent); }

/* =========================================================
   LEGAL
   ========================================================= */
.legal-content { max-width: 800px; }
.legal-content h2 { font-size: 1.2rem; color: var(--black); margin: 40px 0 10px; padding-top: 8px; border-top: 1px solid var(--border); }
.legal-content h2:first-child { margin-top: 0; border-top: none; }
.legal-content h3 { font-size: .95rem; color: var(--black); margin: 20px 0 6px; }
.legal-content p, .legal-content address, .legal-content li { font-size: .92rem; color: #555; line-height: 1.85; font-style: normal; margin-bottom: 8px; }
.legal-content ul { padding-left: 20px; margin-bottom: 10px; }
.legal-content a { color: var(--accent); text-decoration: none; }

/* =========================================================
   LIGHTBOX (projekte.html)
   ========================================================= */
.lightbox { display: none; position: fixed; inset: 0; z-index: 2000; background: rgba(0,0,0,.92); align-items: center; justify-content: center; }
.lightbox.open { display: flex; }
.lightbox-content { position: relative; max-width: 900px; width: 92%; text-align: center; }
.lightbox-img { width: 100%; aspect-ratio: 4/3; background: #222; overflow: hidden; }
.lightbox-img img { width: 100%; height: 100%; object-fit: contain; display: block; }
.lightbox-meta { padding: 14px 0; }
.lightbox-title { font-size: 1.1rem; color: var(--white); margin-bottom: 4px; font-family: 'Oswald', sans-serif; font-weight: 600; text-transform: uppercase; }
.lightbox-cat   { font-size: .75rem; color: var(--accent); text-transform: uppercase; letter-spacing: .16em; }
.lightbox-close { position: absolute; top: -44px; right: 0; background: none; border: none; color: #fff; font-size: 2rem; cursor: pointer; line-height: 1; transition: color .2s; }
.lightbox-close:hover { color: var(--accent); }
.lightbox-nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(0,0,0,.5); color: #fff; border: none; font-size: 1.8rem; cursor: pointer; padding: 8px 14px; transition: background .2s; }
.lightbox-nav:hover { background: var(--accent); }
.lightbox-prev { left: -56px; }
.lightbox-next { right: -56px; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .services-grid          { grid-template-columns: repeat(2, 1fr); }
  .about-preview          { grid-template-columns: 1fr; gap: 40px; }
  .story-grid             { grid-template-columns: 1fr; gap: 48px; }
  .contact-grid           { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid            { grid-template-columns: 1fr 1fr; }
  .values-grid            { grid-template-columns: 1fr 1fr; }
  .service-detail-grid    { grid-template-columns: 1fr; }
  .service-img-placeholder { position: static; aspect-ratio: 16/9; }

  .hamburger { display: flex; }

  /* backdrop-filter entfernt den Stacking-Context-Bug der position:fixed-Kinder verhindert */
  .navbar { backdrop-filter: none; -webkit-backdrop-filter: none; }

  .nav-menu {
    position: fixed !important;
    top: 68px !important;
    left: 0 !important;
    right: 0 !important;
    height: calc(100vh - 68px) !important;
    z-index: 9999 !important;
    background: #ffffff !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    justify-content: flex-start !important;
    transform: translateX(100%) !important;
    transition: none !important;
    overflow-y: auto !important;
    padding: 0 0 40px !important;
  }
  .nav-menu.nav-ready { transition: transform .3s ease !important; }
  .nav-menu.open { transform: translateX(0) !important; }

  .nav-menu > li { width: 100%; border-bottom: 1px solid #e5e5e5; }
  .nav-menu > li > a {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 16px 24px !important;
    font-family: 'Oswald', sans-serif !important;
    font-size: 1rem !important;
    font-weight: 600 !important;
    text-transform: uppercase !important;
    letter-spacing: .08em !important;
    color: #111111 !important;
    text-decoration: none !important;
    background: #ffffff !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .nav-menu a::after { display: none !important; }

  .nav-menu > li > a.nav-cta {
    display: block !important;
    justify-content: center !important;
    margin: 16px 24px !important;
    padding: 13px 24px !important;
    background: #1e3d6b !important;
    color: #ffffff !important;
    text-align: center !important;
    font-size: .88rem !important;
    border-bottom: none !important;
    width: calc(100% - 48px) !important;
    box-sizing: border-box !important;
  }
  .nav-menu > li:last-child { border-bottom: none; }

  /* Dropdown auf Tablet/Mobile */
  .nav-dropdown {
    position: static !important;
    display: block !important;
    max-height: 0 !important;
    overflow: hidden !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    box-shadow: none !important;
    border: none !important;
    min-width: 0 !important;
    background: #f5f5f5 !important;
    transition: max-height .35s ease !important;
  }
  .nav-has-dropdown:hover .nav-dropdown { max-height: 0 !important; }
  .nav-has-dropdown.open .nav-dropdown { max-height: 400px !important; }
  .nav-has-dropdown.open .nav-arrow { transform: rotate(180deg); }

  .nav-dropdown li { width: 100%; }
  .nav-dropdown li a {
    display: block !important;
    padding: 13px 24px 13px 40px !important;
    font-size: .85rem !important;
    color: #555555 !important;
    border-bottom: 1px solid #e5e5e5 !important;
    background: transparent !important;
    text-align: left !important;
  }
  .nav-dropdown li:last-child a { border-bottom: none !important; }
  .nav-dropdown li a:hover { color: #1e3d6b !important; }
}

@media (max-width: 768px) {
  .stats-bar .container { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }

  .gallery-grid         { grid-template-columns: repeat(2, 1fr); }
  .project-preview-grid { grid-template-columns: 1fr 1fr; }
  .form-row             { grid-template-columns: 1fr; }
  .footer-grid          { grid-template-columns: 1fr; }
  .why-grid             { grid-template-columns: 1fr; }
  .footer-bottom        { flex-direction: column; text-align: center; }
  .section              { padding: 64px 0; }

  .lightbox-prev { left: 4px; }
  .lightbox-next { right: 4px; }
  .memberships-logos { gap: 40px; }
  .membership-item img { height: 70px; }
}

@media (max-width: 520px) {
  .hero-actions            { flex-direction: column; }
  .btn                     { justify-content: center; }
  .gallery-grid            { grid-template-columns: 1fr; }
  .project-preview-grid    { grid-template-columns: 1fr; }
  .services-grid           { grid-template-columns: 1fr; }
  .values-grid             { grid-template-columns: 1fr; }
}

/* === 2×2 Foto-Raster (Rohbau-Seite) === */
.photo-grid-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  position: sticky;
  top: 88px;
}
.photo-grid-2x2 img {
  width: 100%; aspect-ratio: 4/3;
  object-fit: cover; object-position: center;
  display: block;
}

/* === Anfahrt-Section === */
.section-anfahrt { padding-bottom: 0; background: var(--light); border-top: 1px solid var(--border); }
.section-anfahrt .container { padding-bottom: 40px; }
.section-anfahrt h2 { margin-bottom: 8px; }

/* === Google Maps DSGVO-Consent === */
.map-wrap { margin-top: 0; aspect-ratio: 16/5; position: relative; }
.map-consent {
  position: absolute; inset: 0;
  background: var(--light); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
}
.map-consent-inner {
  text-align: center; padding: 24px 32px; max-width: 360px;
}
.map-consent-icon { font-size: 2rem; margin-bottom: 12px; }
.map-consent-title {
  font-family: 'Oswald', sans-serif; font-size: 1rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--black); margin-bottom: 10px;
}
.map-consent-text {
  font-size: .82rem; color: var(--grey); line-height: 1.55; margin-bottom: 18px;
}
.map-consent-text a { color: var(--accent); }
.map-frame-wrapper { position: absolute; inset: 0; }
.map-frame-wrapper iframe { width: 100%; height: 100%; border: 0; display: block; }

/* === Vorher / Nachher Slider === */
.before-after {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: ew-resize;
  user-select: none;
  border-radius: 2px;
}
@media (max-width: 768px) {
  .before-after { aspect-ratio: 4/3; }
}
.ba-before,
.ba-after {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.ba-before img,
.ba-after  img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  display: block; pointer-events: none;
}
.ba-after { clip-path: inset(0 50% 0 0); }

.ba-divider {
  position: absolute;
  top: 0; left: 50%;
  height: 100%; width: 3px;
  background: #ffffff;
  transform: translateX(-50%);
  box-shadow: 0 0 8px rgba(0,0,0,.35);
  pointer-events: none;
}
.ba-handle {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 44px; height: 44px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 12px rgba(0,0,0,.3);
  display: flex; align-items: center; justify-content: center;
  pointer-events: none;
}
.ba-handle svg { width: 20px; height: 20px; fill: var(--accent); }

.ba-label {
  position: absolute;
  bottom: 14px;
  padding: 4px 12px;
  background: rgba(0,0,0,.55);
  color: #fff;
  font-family: 'Oswald', sans-serif;
  font-size: .75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .1em;
  border-radius: 2px;
  pointer-events: none;
}
.ba-label-before { left: 14px; }
.ba-label-after  { right: 14px; }