/*
 * bornemann architektur — Minimalist Redesign
 * Inspired by: Chipperfield, Norm Architects, Pawson, Studio Oink
 */

/* ── Variablen ─────────────────────────────────────────────── */
:root {
  --charcoal:   #111111;
  --dark:       #1a1a1a;
  --mid:        #444444;
  --stone:      #777777;
  --mist:       #aaaaaa;
  --border:     #dddad5;
  --border-dark: #333333;
  --sand:       #f4f2ee;
  --white:      #ffffff;
  --footer-bg:  #0f0f0f;

  /* Kompatibilitäts-Aliases */
  --text:          #1a1a1a;
  --text-mid:      #444444;
  --text-soft:     #aaaaaa;
  --text-light:    #444444;
  --bg-light:      #f4f2ee;
  --red:           #111111;   /* kein Rot mehr, überall charcoal */
  --stone-light:   rgba(255,255,255,0.5);
  --charcoal-alias: #111111;
  --warm-white:    #f4f2ee;
  --font-heading:  'Lato', sans-serif;
  --transition:    0.25s ease;
  --ease:          0.25s ease;

  --font-body:  'Open Sans', Arial, sans-serif;
  --font-ui:    'Lato', sans-serif;
  --wrapper:    1100px;
  --header-h:   72px;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--dark);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img    { display: block; max-width: 100%; height: auto; }
ul     { list-style: none; }
a      { color: inherit; text-decoration: none; transition: opacity var(--ease); }
a:hover { opacity: 0.6; }
address { font-style: normal; }

/* ── Layout ────────────────────────────────────────────────── */
.container {
  max-width: var(--wrapper);
  margin: 0 auto;
  padding: 0 32px;
}
.container--narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ── Header ────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { flex-shrink: 0; }
.logo img { height: 26px; width: auto; max-width: none; }

/* ── Navigation ────────────────────────────────────────────── */
.main-nav ul { display: flex; align-items: center; gap: 0; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
  display: block;
  padding: 8px 14px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stone);
  transition: color var(--ease);
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li > a.active {
  color: var(--charcoal);
  opacity: 1;
}

/* Dropdown */
.main-nav .sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  min-width: 160px;
  border: 1px solid var(--border);
  border-top: 2px solid var(--charcoal);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  z-index: 200;
}
.main-nav .sub-menu li a {
  display: block;
  padding: 10px 16px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--stone);
  border-bottom: 1px solid var(--border);
  transition: all var(--ease);
}
.main-nav .sub-menu li a:hover { background: var(--sand); color: var(--charcoal); opacity: 1; }
.main-nav > ul > li:hover .sub-menu { display: block; animation: dropIn 0.15s ease; }

@keyframes dropIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: none; }
}

.nav-cloud {
  margin-left: 8px;
  padding: 6px 14px !important;
  background: var(--charcoal) !important;
  color: var(--white) !important;
  font-size: 11px !important;
  transition: opacity var(--ease) !important;
}
.nav-cloud:hover { opacity: 0.7 !important; color: var(--white) !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span { display: block; width: 22px; height: 1px; background: var(--charcoal); transition: var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ── Sections ──────────────────────────────────────────────── */
.section { padding: 80px 0; }
.section--warm { background: var(--sand); }
.section--dark { background: var(--charcoal); }

.section-header { margin-bottom: 48px; }
.section-header h2 {
  font-family: var(--font-ui);
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--charcoal);
  margin: 8px 0 16px;
}
.section--dark .section-header h2 { color: var(--white); }
.section-divider { width: 32px; height: 1px; background: var(--border-dark); }
.section--dark .section-divider { background: rgba(255,255,255,0.3); }

/* ── Label ─────────────────────────────────────────────────── */
.label {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--stone);
}

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  background: var(--charcoal);
  min-height: 560px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, transparent 60%);
}
.hero .container { position: relative; z-index: 1; padding: 80px 32px; }
.hero-label {
  display: block;
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--font-ui);
  font-size: clamp(32px, 5.5vw, 64px);
  font-weight: 100;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 28px;
  letter-spacing: 0.05em;
}
.hero h1 strong { font-weight: 700; }
.hero-tagline {
  font-size: 15px;
  color: rgba(255,255,255,0.5);
  max-width: 480px;
  margin-bottom: 40px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.25);
  font-size: 9px;
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  transition: opacity 0.3s;
}
.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.2);
  animation: scrollPulse 2.5s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%,100% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50%     { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* ── Page-Hero (Unterseiten) ───────────────────────────────── */
.page-hero {
  background: var(--charcoal);
  padding: 48px 0;
  border-bottom: 1px solid #222;
}
.page-hero h1 {
  font-family: var(--font-ui);
  font-size: 28px;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-top: 10px;
  margin-bottom: 0;
}
.page-hero .breadcrumb       { color: rgba(255,255,255,0.3); }
.page-hero .breadcrumb a     { color: rgba(255,255,255,0.3); }
.page-hero .breadcrumb a:hover { color: rgba(255,255,255,0.7); opacity: 1; }
.page-hero .label            { color: rgba(255,255,255,0.35); }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  border: none;
  transition: all var(--ease);
}
.btn-primary { background: var(--white); color: var(--charcoal); }
.btn-primary:hover { background: var(--sand); opacity: 1; }
.btn-outline { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: var(--white); opacity: 1; }
.btn-dark { background: var(--charcoal); color: var(--white); }
.btn-dark:hover { background: var(--mid); opacity: 1; }

/* ── Grids ─────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ── Typografie ────────────────────────────────────────────── */
h1 {
  font-family: var(--font-ui);
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--charcoal);
  margin-bottom: 32px;
}
h2 {
  font-family: var(--font-ui);
  font-size: 18px;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--charcoal);
  margin: 32px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
h3 { font-family: var(--font-ui); font-size: 14px; font-weight: 700; color: var(--charcoal); margin: 20px 0 8px; }
h4 { font-family: var(--font-ui); font-size: 12px; font-weight: 700; color: var(--charcoal); margin: 16px 0 6px; letter-spacing: 0.08em; text-transform: uppercase; }
p  { margin-bottom: 16px; color: var(--mid); }
.lead { font-size: 16px; line-height: 1.8; color: var(--mid); }
.text-center { text-align: center; }

/* ── Pullquote ─────────────────────────────────────────────── */
.pullquote {
  border-left: 1px solid var(--border-dark);
  padding: 20px 32px;
  margin: 0;
}
.pullquote p {
  font-family: var(--font-ui);
  font-size: 18px;
  font-weight: 300;
  line-height: 1.65;
  color: var(--charcoal);
  font-style: italic;
  letter-spacing: 0.02em;
  margin: 0;
}

/* ── Service-Karten ────────────────────────────────────────── */
.service-card {
  padding: 32px 28px;
  border: 1px solid var(--border);
  background: var(--white);
  transition: box-shadow var(--ease);
}
.service-card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.06); }
.service-icon { width: 36px; height: 36px; color: var(--charcoal); margin-bottom: 20px; }
.service-card h3 {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--charcoal);
  margin: 0 0 12px;
}
.service-card p { font-size: 13px; color: var(--stone); line-height: 1.7; margin: 0; }

/* ── Service-Items (Liste) ─────────────────────────────────── */
.service-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.service-item:first-of-type { border-top: 1px solid var(--border); }
.service-number {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--stone);
  text-transform: uppercase;
  padding-top: 2px;
}
.service-item h3 { font-family: var(--font-ui); font-size: 13px; font-weight: 700; color: var(--charcoal); margin: 0 0 6px; letter-spacing: 0.05em; text-transform: uppercase; }
.service-item p { font-size: 14px; color: var(--stone); line-height: 1.7; margin: 0; }

/* ── Cards ─────────────────────────────────────────────────── */
.card { border: 1px solid var(--border); background: var(--white); overflow: hidden; }
.card-body { padding: 20px; border-top: 1px solid var(--border-dark); }
.card-label { display: block; font-family: var(--font-ui); font-size: 10px; font-weight: 400; text-transform: uppercase; letter-spacing: 0.15em; color: var(--stone); margin-bottom: 8px; }
.card h3 { font-family: var(--font-ui); font-size: 13px; font-weight: 700; color: var(--charcoal); margin: 0 0 10px; }
.card p { font-size: 13px; color: var(--stone); line-height: 1.7; margin: 0; }

/* ── Projekt-Karten ────────────────────────────────────────── */
.project-card {
  border: none;
  background: transparent;
  overflow: hidden;
  display: block;
  color: var(--charcoal);
  transition: opacity var(--ease);
}
.project-card:hover { opacity: 0.85; }
.project-card-image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--sand);
}
.project-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.project-card:hover .project-card-image img { transform: scale(1.03); }
.project-card-body { padding: 16px 0 0; }
.project-card-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.project-type-badge {
  font-family: var(--font-ui);
  font-size: 9px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--stone);
}
.project-year { font-size: 11px; color: var(--mist); }
.project-card h3 {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--charcoal);
  margin: 0 0 4px;
}
.project-card p { font-size: 13px; color: var(--stone); margin: 0; line-height: 1.6; }

/* ── Projekt-Galerie ───────────────────────────────────────── */
.project-gallery { background: var(--charcoal); }
.gallery-main {
  aspect-ratio: 16/7;
  overflow: hidden;
  position: relative;
  background: #1a1a1a;
}
.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.35s ease;
  display: block;
}
.gallery-thumbs {
  display: flex;
  gap: 2px;
  padding: 2px 0 0;
  background: var(--charcoal);
}
.gallery-thumb {
  flex: 1;
  aspect-ratio: 4/3;
  object-fit: cover;
  cursor: pointer;
  opacity: 0.4;
  transition: opacity 0.2s;
  display: block;
}
.gallery-thumb:hover { opacity: 0.7; }
.gallery-thumb.active { opacity: 1; outline: 2px solid var(--white); outline-offset: -2px; }

/* ── Projekt-Detail ────────────────────────────────────────── */
.project-detail {
  background: var(--white);
  border: 1px solid var(--border);
  overflow: hidden;
}
.project-detail-header {
  background: var(--charcoal);
  padding: 2.5rem;
  color: var(--white);
}
.project-detail-header h2 {
  color: var(--white);
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0.5rem;
  font-weight: 200;
  font-size: 1.75rem;
  letter-spacing: 0.08em;
}
.project-detail-header .lead { color: rgba(255,255,255,0.5); }
.project-detail-meta { display: flex; gap: 1rem; align-items: center; margin-bottom: 1rem; }
.project-detail-body { padding: 2.5rem; }
.project-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.project-info-item dt { font-family: var(--font-ui); font-size: 10px; font-weight: 400; text-transform: uppercase; letter-spacing: 0.15em; color: var(--stone); margin-bottom: 3px; }
.project-info-item dd { font-size: 14px; color: var(--mid); }

/* ── Filter ────────────────────────────────────────────────── */
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 2.5rem; }
.filter-btn {
  padding: 8px 20px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--stone);
  cursor: pointer;
  transition: all var(--ease);
}
.filter-btn:hover,
.filter-btn.active { background: var(--charcoal); border-color: var(--charcoal); color: var(--white); }

/* ── Breadcrumb ────────────────────────────────────────────── */
.breadcrumb { font-size: 11px; color: var(--mist); margin-bottom: 12px; letter-spacing: 0.05em; }
.breadcrumb a { color: var(--mist); }
.breadcrumb a:hover { color: rgba(255,255,255,0.7); opacity: 1; }
.breadcrumb span { margin: 0 6px; }

/* ── Kontakt ───────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-details dt {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.4);
  margin-top: 20px;
}
.contact-details dt:first-child { margin-top: 0; }
.contact-details dd { font-size: 14px; color: rgba(255,255,255,0.65); margin-top: 4px; }
.contact-details a { color: rgba(255,255,255,0.65); }
.contact-details a:hover { color: var(--white); opacity: 1; }

.contact-form-group { margin-bottom: 16px; }
.contact-form-group label {
  display: block;
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 8px;
}
.contact-form-group input,
.contact-form-group textarea {
  width: 100%;
  padding: 12px 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: border-color var(--ease);
}
.contact-form-group input:focus,
.contact-form-group textarea:focus { border-color: rgba(255,255,255,0.6); }
.contact-form-group textarea { min-height: 100px; resize: none; }
.contact-form-group input::placeholder,
.contact-form-group textarea::placeholder { color: rgba(255,255,255,0.2); }

/* ── Tags ──────────────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 4px 10px;
  background: var(--sand);
  border: 1px solid var(--border);
  color: var(--stone);
}

/* ── Credentials / Timeline ────────────────────────────────── */
.credentials-list { list-style: none; }
.credential-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--mid);
}
.credential-year { font-family: var(--font-ui); font-weight: 400; color: var(--stone); font-size: 12px; letter-spacing: 0.05em; }

/* ── Formate-Grid ──────────────────────────────────────────── */
.format-grid { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.format-item {
  padding: 8px 14px;
  background: var(--sand);
  border: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.05em;
}
.format-item small { display: block; font-weight: 400; color: var(--stone); font-size: 10px; margin-top: 2px; letter-spacing: 0; }

/* ── Bio-Foto ──────────────────────────────────────────────── */
.bio-photo { position: sticky; top: calc(var(--header-h) + 2rem); }
.bio-photo img { width: 100%; aspect-ratio: 3/4; object-fit: cover; filter: grayscale(15%); }
.bio-photo-caption { padding: 1rem; background: var(--sand); border: 1px solid var(--border); border-top: none; }
.bio-photo-caption h3 { font-size: 13px; font-weight: 700; margin: 0 0 4px; letter-spacing: 0.03em; }
.bio-photo-caption p { font-size: 12px; color: var(--stone); margin: 0; }

/* ── Scroll-Reveal ─────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.revealed { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── Footer ────────────────────────────────────────────────── */
.site-footer { background: var(--footer-bg); color: rgba(255,255,255,0.4); padding: 60px 0 32px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  margin-bottom: 28px;
}
.footer-logo { height: 24px; width: auto; max-width: none; margin-bottom: 14px; filter: brightness(0) invert(1); opacity: 0.5; }
.footer-tagline { font-size: 12px; color: rgba(255,255,255,0.3); line-height: 1.7; margin: 0; }
.footer-heading { font-family: var(--font-ui); font-size: 10px; font-weight: 400; text-transform: uppercase; letter-spacing: 0.18em; color: rgba(255,255,255,0.5); margin-bottom: 16px; margin-top: 0; }
.footer-address { font-size: 13px; color: rgba(255,255,255,0.35); line-height: 1.9; }
.footer-address a { color: rgba(255,255,255,0.35); }
.footer-address a:hover { color: rgba(255,255,255,0.8); opacity: 1; }
.footer-nav-list li + li { margin-top: 10px; }
.footer-nav-list a { font-size: 12px; letter-spacing: 0.05em; color: rgba(255,255,255,0.35); }
.footer-nav-list a:hover { color: rgba(255,255,255,0.8); opacity: 1; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; font-size: 11px; letter-spacing: 0.05em; flex-wrap: wrap; gap: 10px; }
.footer-bottom a { color: rgba(255,255,255,0.3); }
.footer-bottom a:hover { color: rgba(255,255,255,0.7); opacity: 1; }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--white);
    border-top: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    z-index: 99;
  }
  .main-nav.open { display: block; }
  .main-nav > ul { flex-direction: column; }
  .main-nav > ul > li > a { padding: 16px 24px; border-bottom: 1px solid var(--border); }
  .main-nav .sub-menu { position: static; border-top: none; box-shadow: none; }
  .main-nav .sub-menu li a { padding-left: 40px; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid  { grid-template-columns: 1fr; }
  .project-info-grid { grid-template-columns: 1fr; }
  .bio-photo { position: static; }
  .bio-photo img { aspect-ratio: 1/1; max-height: 280px; }
  .hero h1 { font-size: 28px; }
  .hero .container { padding: 60px 24px; }
  .container, .container--narrow { padding: 0 20px; }
  .section { padding: 56px 0; }
}