/* ============================================================
   Rheinwalt Architekten – Haupt-Stylesheet
   Erstellt: Mai 2026
   Technologie: CSS3, Custom Properties, Mobile-First
   ============================================================ */

/* ------------------------------------------------------------
   Lokale Schriftarten (Inter Variable, selbst gehostet)
   ------------------------------------------------------------ */
@font-face {
  font-family: 'Inter';
  src: url('../fonts/Inter-VariableFont_opsz,wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: block;
}
@font-face {
  font-family: 'Inter';
  src: url('../fonts/Inter-Italic-VariableFont_opsz,wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: italic;
  font-display: block;
}



/* ------------------------------------------------------------
   CSS-Variablen / Design Tokens
   ------------------------------------------------------------ */
:root {
  /* Farben */
  --color-white:      #FFFFFF;
  --color-bg:         #FAFAFA;
  --color-black:      #111111;
  --color-gray-dark:  #333333;
  --color-gray-mid:   #777777;
  --color-gray-light: #E8E8E8;
  --color-gray-bg:    #F4F4F4;
  --color-accent:     #209090;
  --color-accent-dark:#177070;

  /* Typografie */
  --font-primary: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-weight-light:  300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;

  /* Schriftgrößen */
  --text-xs:   0.75rem;   /* 12px */
  --text-sm:   0.875rem;  /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg:   1.125rem;  /* 18px */
  --text-xl:   1.25rem;   /* 20px */
  --text-2xl:  1.5rem;    /* 24px */
  --text-3xl:  2rem;      /* 32px */
  --text-4xl:  2.75rem;   /* 44px */
  --text-5xl:  3.5rem;    /* 56px */

  /* Abstände */
  --spacing-xs:  0.5rem;    /* 8px */
  --spacing-sm:  1rem;      /* 16px */
  --spacing-md:  1.5rem;    /* 24px */
  --spacing-lg:  2.5rem;    /* 40px */
  --spacing-xl:  4rem;      /* 64px */
  --spacing-2xl: 6rem;      /* 96px */
  --spacing-3xl: 9rem;      /* 144px */

  /* Layout */
  --container-max: 1280px;
  --header-height: 72px;

  /* Übergänge */
  --transition-fast:   0.2s ease;
  --transition-mid:    0.35s ease;
  --transition-slow:   0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-base:   0.25s ease;

  /* Aliase für Filter-Buttons */
  --color-text-secondary: #777777;
  --color-border:         #E8E8E8;

  /* Schatten */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
}

/* ------------------------------------------------------------
   Reset & Basis
   ------------------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-normal);
  color: var(--color-black);
  background-color: var(--color-white);
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ------------------------------------------------------------
   Typografie
   ------------------------------------------------------------ */
h1, h2, h3, h4 {
  font-weight: var(--font-weight-light);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-black);
}

h1 { font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl)); }
h2 { font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-3xl)); }
h4 { font-size: var(--text-xl); font-weight: var(--font-weight-medium); }

p {
  font-size: var(--text-base);
  color: var(--color-gray-dark);
  line-height: 1.75;
  max-width: 68ch;
}

.text-accent {
  color: var(--color-accent);
}

.text-light {
  color: var(--color-gray-mid);
  font-weight: var(--font-weight-light);
}

.label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ------------------------------------------------------------
   Layout-Helfer
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

.section {
  padding: var(--spacing-2xl) 0;
}

@media (min-width: 1024px) {
  .section {
    padding: var(--spacing-3xl) 0;
  }
}

/* ------------------------------------------------------------
   Scroll-Animationen (IntersectionObserver)
   ------------------------------------------------------------ */
.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ------------------------------------------------------------
   HEADER
   ------------------------------------------------------------ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.site-header.scrolled {
  border-bottom-color: var(--color-gray-light);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-logo img {
  height: 56px;
  width: auto;
  object-fit: contain;
}

/* Desktop Navigation */
.site-nav {
  display: none;
}

@media (min-width: 768px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
  }
}

.site-nav a {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-gray-dark);
  transition: color var(--transition-fast);
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-mid);
}

.site-nav a:hover {
  color: var(--color-accent);
}

.site-nav a:hover::after {
  width: 100%;
}

/* Hamburger-Menü (Mobile) */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
  z-index: 110;
  position: relative;
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }
}

.hamburger span {
  display: block;
  height: 1.5px;
  background: var(--color-black);
  border-radius: 2px;
  transition: transform var(--transition-mid), opacity var(--transition-mid);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Navigation Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 105;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  opacity: 0;
  transition: opacity var(--transition-mid);
}

.mobile-nav.open {
  display: flex;
  opacity: 1;
}

.mobile-nav a {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-light);
  letter-spacing: 0.05em;
  color: var(--color-black);
  transition: color var(--transition-fast);
}

.mobile-nav a:hover {
  color: var(--color-accent);
}

/* ------------------------------------------------------------
   HERO
   ------------------------------------------------------------ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background-color: var(--color-black);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.75;
  transition: transform 8s ease-out;
}

.hero:hover .hero-image {
  transform: scale(1.03);
}

/* Gradient-Scrim für WCAG-Kontrast hinter dem Textblock */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.60) 0%,
    rgba(0, 0, 0, 0.35) 45%,
    transparent 75%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 0 var(--spacing-xl);
  width: 100%;
}

.hero-content .container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-eyebrow {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.hero h1 {
  color: var(--color-white);
  font-weight: var(--font-weight-light);
  max-width: 16ch;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.hero h1 em {
  font-style: normal;
  color: var(--color-accent);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.6);
}

.hero-sub {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.80);
  max-width: 52ch;
  line-height: 1.6;
  font-weight: var(--font-weight-light);
  margin-bottom: var(--spacing-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.875rem 2rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 0;
  transition: all var(--transition-mid);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid var(--color-white);
  color: var(--color-white);
}

.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-black);
}

.hero-scroll {
  position: absolute;
  bottom: var(--spacing-md);
  right: var(--spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: rgba(255,255,255,0.5);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.3);
  margin-top: var(--spacing-xs);
}

/* ------------------------------------------------------------
   TAG DER ARCHITEKTUR
   ------------------------------------------------------------ */
.tda-section {
  background: var(--color-gray-bg);
  border-top: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
}

.tda-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

@media (min-width: 768px) {
  .tda-grid {
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-2xl);
  }
}

.tda-image img {
  width: 100%;
  max-width: 280px;
  display: block;
}

.tda-text .label {
  display: block;
  margin-bottom: var(--spacing-sm);
}

.tda-text h2 {
  margin-bottom: var(--spacing-md);
}

.tda-text p {
  font-size: var(--text-lg);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.tda-address {
  font-style: normal;
  font-size: var(--text-base);
  color: var(--color-gray-dark);
  line-height: 1.9;
}

.tda-address a {
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.tda-address a:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

/* ------------------------------------------------------------
   ÜBER UNS
   ------------------------------------------------------------ */
.about {
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--spacing-2xl);
  }
}

.about-text .label {
  display: block;
  margin-bottom: var(--spacing-sm);
}

.about-text h2 {
  margin-bottom: var(--spacing-md);
}

.about-text p {
  margin-bottom: var(--spacing-md);
  font-size: var(--text-lg);
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.stat-item {
  padding: var(--spacing-md);
  border-left: 2px solid var(--color-accent);
}

.stat-number {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-light);
  color: var(--color-accent);
  letter-spacing: -0.03em;
  line-height: 1;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-gray-mid);
  font-weight: var(--font-weight-normal);
}

.about-visual {
  position: relative;
}

.about-image-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/5;
}

.about-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about-image-wrap:hover img {
  transform: scale(1.04);
}

.about-image-badge {
  position: absolute;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  background: rgba(17, 17, 17, 0.50);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: var(--spacing-sm) var(--spacing-md);
}

.about-image-badge span {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
}

/* Tätigkeitsfelder */
.services-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.service-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-gray-light);
  font-size: var(--text-base);
  color: var(--color-gray-dark);
  line-height: 1.5;
}

.service-item::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  min-width: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 0.45em;
}

/* ------------------------------------------------------------
   REFERENZEN
   ------------------------------------------------------------ */
.referenzen {
  background: var(--color-gray-bg);
}

.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-header .label {
  display: block;
  margin-bottom: var(--spacing-sm);
}

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  color: var(--color-gray-mid);
  font-size: var(--text-lg);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

@media (max-width: 360px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  position: relative;
  overflow: hidden;
  background: var(--color-white);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-mid), transform var(--transition-mid);
}

.project-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

/* Vollflächiger klickbarer Overlay-Link */
.project-card-link-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
}

.project-card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.project-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card-image img {
  transform: scale(1.07);
}

/* Hover-Overlay über dem Bild */
.project-card-hover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(17, 17, 17, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-mid);
}

/* Geometrischer Pfeil: Linie + spitze Spitze, keine Kurven */
.project-card-hover-overlay span {
  display: block;
  width: 32px;
  height: 14px;
  position: relative;
  font-size: 0;
  transition: transform var(--transition-mid);
}

/* Schaft */
.project-card-hover-overlay span::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 26px;
  height: 1.5px;
  background: rgba(255,255,255,0.90);
  transform: translateY(-50%);
}

/* Spitze (zwei gerade Linien als Winkel) */
.project-card-hover-overlay span::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  width: 10px;
  height: 10px;
  border-top: 1.5px solid rgba(255,255,255,0.90);
  border-right: 1.5px solid rgba(255,255,255,0.90);
  transform: translateY(-50%) rotate(45deg) translate(-2px, 2px);
}

.project-card:hover .project-card-hover-overlay {
  opacity: 1;
}

.project-card:hover .project-card-hover-overlay span {
  transform: translateX(6px);
}

.project-card-body {
  padding: var(--spacing-md);
}

.project-card-tag {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.project-card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-black);
  margin-bottom: var(--spacing-xs);
}

.project-card-location {
  font-size: var(--text-sm);
  color: var(--color-gray-mid);
  display: flex;
  align-items: center;
  gap: 4px;
}

.project-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  margin-top: var(--spacing-sm);
  transition: gap var(--transition-fast);
}

.project-card-link:hover {
  gap: var(--spacing-sm);
}

.project-card-link .arrow {
  font-size: 1.1em;
  transition: transform var(--transition-fast);
}

/* ---- Schwarz-Weiß-Galeriebild (Bestandsfotos) ---- */
.galerie-item--bw img {
  filter: grayscale(100%);
  transition: filter var(--transition-base);
}

.galerie-item--bw:hover img {
  filter: grayscale(100%);
}

/* ---- "In Realisierung" Platzhalter-Karten ---- */

/* Hintergrund des Abschnitts leicht abgesetzt vom normalen Referenzen-Grau */
.in-realisierung {
  background: var(--color-white);
}

/* ── Projekt-Filterleiste ─────────────────────────────────── */
.project-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  font-family: var(--font-primary);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  background: none;
  border: 1px solid var(--color-border);
  padding: 7px 18px;
  border-radius: 2px;
  cursor: pointer;
  transition: color var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

/* Karten die dem aktiven Filter nicht entsprechen */
.project-card.is-hidden {
  display: none;
}

/* Grid-Überblendung beim Wechsel */
.projects-grid {
  transition: opacity 0.15s ease;
}

/* Platzhalter-Bildfläche statt echtem Foto */
.project-card-image--placeholder {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: var(--color-gray-bg);
  background-image: url('../img/placeholder-gebaeude.svg');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 115% auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Baustellen-Variante für "In Realisierung"-Karten ohne Foto */
.project-card-image--placeholder-baustelle {
  background-image: url('../img/placeholder-baustelle.svg');
  background-size: 112% auto;
  background-position: center bottom;
}

/* WIP-Badge in der Mitte der Platzhalterfläche */
.wip-badge {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 6px 14px;
  border-radius: 2px;
}

/* WIP-Karten erhalten keinen Hover-Schatten und keinen Klick-Cursor */
.project-card--wip {
  cursor: default;
}

.project-card--wip:hover {
  box-shadow: none;
  transform: none;
}

.project-card:hover .arrow {
  transform: translateX(4px);
}

/* ------------------------------------------------------------
   KONTAKT
   ------------------------------------------------------------ */
.kontakt {
  background: var(--color-white);
}

/* 2-Spalten-Grid: links Text, rechts Karten + Button */
.kontakt-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .kontakt-grid {
    grid-template-columns: 1fr 1fr;
    column-gap: var(--spacing-2xl);
    align-items: start;
  }
}

/* "Kontakt"-Label in Zeile 1 */
.kontakt-label {
  display: block;
}

/* Linke Spalte Zeile 2: Heading, Text, Button – oben bündig mit Karten */
.kontakt-left {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.kontakt-left h2 {
  margin: 0;
}

/* Beschreibungstext */
.kontakt-desc {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-gray-dark);
  max-width: 52ch;
  margin: 0;
}

/* Rechte Spalte: Büro-Karten + Button */
.kontakt-right {
  display: flex;
  flex-direction: column;
}

/* CTA-Text rechts – gleicher Stil wie Beschreibungstext links */
.kontakt-cta-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.kontakt-cta-heading {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-black);
  font-weight: var(--font-weight-medium);
  margin: 0;
}

.kontakt-cta-sub {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-gray-dark);
  margin: 0;
  max-width: none;
}

.kontakt-offices {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 640px) {
  .kontakt-offices {
    grid-template-columns: 1fr 1fr;
  }
}

.office-card {
  padding: var(--spacing-md);
  border: 1px solid var(--color-gray-light);
  transition: border-color var(--transition-mid);
}

.office-card:hover {
  border-color: var(--color-accent);
}

.office-card h4 {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-black);
}

.office-card address {
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--color-gray-mid);
  line-height: 1.8;
}

.office-card address a {
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.office-card address a:hover {
  color: var(--color-accent-dark);
}

/* Kontakt-Formular */
.kontakt-form {
  background: transparent;
  padding: 0;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-black);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-primary);
  font-size: var(--text-base);
  color: var(--color-black);
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: 0;
  outline: none;
  transition: border-color var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 640px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-consent {
  font-size: var(--text-sm);
  color: var(--color-gray-mid);
  margin-top: var(--spacing-sm);
}

.form-consent a {
  color: var(--color-accent);
  text-decoration: underline;
}

.btn-submit {
  width: 100%;
  margin-top: var(--spacing-md);
  padding: 1rem;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
  border: none;
}

.btn-submit:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

/* Formular-Feedback */
.form-success {
  display: none;
  padding: var(--spacing-md);
  background: rgba(32,144,144,0.08);
  border-left: 3px solid var(--color-accent);
  color: var(--color-accent-dark);
  font-size: var(--text-sm);
  margin-top: var(--spacing-md);
}

/* ------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------ */
.site-footer {
  background: var(--color-white);
  border-top: 2px solid var(--color-accent);
  padding: var(--spacing-xl) 0;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
}

@media (min-width: 1024px) {
  .footer-grid {
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 0;
  }
}

.footer-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex-shrink: 0;
  padding: 0 var(--spacing-md);
}

@media (min-width: 1024px) {
  .footer-col {
    padding: 0 var(--spacing-lg);
  }
}

.footer-col--address,
.footer-col--contact,
.footer-col--legal {
  font-size: var(--text-sm);
  color: var(--color-gray-dark);
  line-height: 1.7;
}

.footer-col--contact a,
.footer-col--contact span {
  display: block;
  line-height: 1.7;
  color: var(--color-gray-dark);
  transition: color var(--transition-fast);
}

.footer-col--contact a:hover {
  color: var(--color-accent);
}

.footer-col--legal a {
  color: var(--color-gray-dark);
  transition: color var(--transition-fast);
}

.footer-col--legal a:hover {
  color: var(--color-accent);
}

.footer-divider {
  display: none;
}

@media (min-width: 1024px) {
  .footer-divider {
    display: block;
    width: 2px;
    height: 48px;
    background: var(--color-accent);
    flex-shrink: 0;
    align-self: center;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0 var(--spacing-xl);
}

.footer-brand img {
  height: 64px;
  width: auto;
  object-fit: contain;
}

.footer-brand-copy {
  font-size: var(--text-xs);
  color: var(--color-gray-mid);
  margin-top: 2px;
}

/* Adressen-Linie (Fallback für Nicht-Desktop) */
.footer-addresses {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

@media (min-width: 1024px) {
  .footer-addresses {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
  }
}

.footer-address-sep {
  display: none;
}

@media (min-width: 1024px) {
  .footer-address-sep {
    display: inline;
    opacity: 0.3;
  }
}

/* ------------------------------------------------------------
   PROJEKTSEITEN
   ------------------------------------------------------------ */
.projekt-hero {
  margin-top: var(--header-height);
  position: relative;
  height: 65vh;
  min-height: 400px;
  overflow: hidden;
  background: var(--color-black);
}

.projekt-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  position: relative;
  z-index: 0;
}

.projekt-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to top,  rgba(0,0,0,0.82) 0%, rgba(0,0,0,0.20) 45%, transparent 60%),
    linear-gradient(to right, rgba(0,0,0,0.30) 0%, transparent 60%);
  pointer-events: none;
}

/* Sättigung für Flemlingen-Projektbilder reduziert (Himmel) */
img[src*="sanierung-kirche-flemlingen"] {
  filter: saturate(0.45);
}

.projekt-hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xl) 0;
  z-index: 2;
}

.projekt-hero-content .label {
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.projekt-hero-content h1 {
  color: var(--color-white);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
}

.projekt-meta {
  background: var(--color-white);
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-gray-light);
}

.projekt-meta-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.meta-value {
  font-size: var(--text-base);
  color: var(--color-black);
  font-weight: var(--font-weight-medium);
}

.projekt-description {
  padding: var(--spacing-lg) 0 var(--spacing-2xl);
  background: var(--color-white);
}

.projekt-description-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .projekt-description-grid {
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
  }
}

.projekt-description p {
  font-size: var(--text-lg);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

/* Bilder-Galerie */
.projekt-galerie {
  background: var(--color-gray-bg);
  padding: var(--spacing-2xl) 0;
}

.galerie-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xs);
}

@media (min-width: 640px) {
  .galerie-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .galerie-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.galerie-item {
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  position: relative;
  background: var(--color-gray-light);
}

.galerie-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow), opacity var(--transition-mid);
}

.foto-credit {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--color-gray);
  text-align: left;
}

.foto-credit a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.foto-credit a:hover {
  color: var(--color-accent);
}

.galerie-item:hover img {
  transform: scale(1.05);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.95);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox.active {
  display: flex;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  cursor: default;
  box-shadow: var(--shadow-lg);
}

.lightbox-close {
  position: fixed;
  top: var(--spacing-md);
  right: var(--spacing-md);
  color: var(--color-white);
  font-size: var(--text-2xl);
  line-height: 1;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
  z-index: 210;
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-white);
  font-size: var(--text-3xl);
  opacity: 0.7;
  cursor: pointer;
  padding: var(--spacing-md);
  transition: opacity var(--transition-fast);
  z-index: 210;
  user-select: none;
}

.lightbox-prev { left: 0; }
.lightbox-next { right: 0; }
.lightbox-prev:hover,
.lightbox-next:hover { opacity: 1; }

.lightbox-counter {
  position: fixed;
  bottom: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.6);
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
}

/* Zurück-Link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: var(--spacing-md) 0;
  transition: gap var(--transition-fast);
}

.back-link:hover {
  gap: var(--spacing-sm);
}

/* Weitere Projekte */
.weitere-projekte {
  padding: var(--spacing-2xl) 0;
  background: var(--color-white);
}

/* ------------------------------------------------------------
   IMPRESSUM & DATENSCHUTZ
   ------------------------------------------------------------ */
.legal-page {
  padding-top: calc(var(--header-height) + var(--spacing-2xl));
  padding-bottom: var(--spacing-3xl);
  background: var(--color-white);
}

.legal-page h1 {
  margin-bottom: var(--spacing-xl);
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-light);
}

.legal-page h2 {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-medium);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
}

.legal-page h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-medium);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xs);
}

.legal-page p,
.legal-page address {
  font-size: var(--text-base);
  color: var(--color-gray-dark);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
  font-style: normal;
  max-width: 72ch;
}

.legal-page a {
  color: var(--color-accent);
}

.legal-page a:hover {
  text-decoration: underline;
}

.legal-content {
  max-width: 840px;
}

/* ------------------------------------------------------------
   Utility: main content below fixed header
   ------------------------------------------------------------ */
.page-main {
  padding-top: var(--header-height);
}

/* ------------------------------------------------------------
   Responsive Anpassungen
   ------------------------------------------------------------ */
@media (max-width: 767px) {
  .hero h1 {
    max-width: 20ch;
  }

  .hero-scroll {
    display: none;
  }

  .about-stats {
    grid-template-columns: 1fr 1fr;
  }

  .footer-inner {
    text-align: left;
  }
}


/* ------------------------------------------------------------
   E-Mail-Button (Kleinschreibung erhalten)
   ------------------------------------------------------------ */
.btn-email {
  text-transform: none;
  font-size: var(--text-base);
  letter-spacing: 0;
}

/* ------------------------------------------------------------
   Kontakt-Telefonzeilen
   ------------------------------------------------------------ */
.kontakt-phone-line {
  font-size: var(--text-base);
  color: var(--color-gray-dark);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.kontakt-phone-line:hover .kontakt-nr {
  color: var(--color-accent-dark);
}

.kontakt-ort {
  color: var(--color-black);
  font-weight: var(--font-weight-semibold);
  min-width: 5rem;
}

.kontakt-nr {
  color: var(--color-accent);
  font-weight: var(--font-weight-normal);
}

/* ------------------------------------------------------------
   Footer Adressen
   ------------------------------------------------------------ */
.footer-addresses {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

@media (min-width: 1024px) {
  .footer-addresses {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
  }
}

.footer-address-sep {
  display: none;
}

@media (min-width: 1024px) {
  .footer-address-sep {
    display: inline;
    opacity: 0.3;
  }
}

/* ------------------------------------------------------------
   Zurück-Link (Projekt-Seiten) – als Button gestaltet
   ------------------------------------------------------------ */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-mid);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--color-gray-light);
  margin: var(--spacing-md) 0;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.back-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: rgba(32, 144, 144, 0.04);
  gap: 0.75rem;
}

/* ------------------------------------------------------------
   Print
   ------------------------------------------------------------ */
@media print {
  .site-header,
  .hamburger,
  .mobile-nav,
  .lightbox {
    display: none !important;
  }

  body {
    padding-top: 0;
  }
}

/* ------------------------------------------------------------
   SKIP NAVIGATION (Barrierefreiheit)
   ------------------------------------------------------------ */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.75rem 1.25rem;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border-radius: 2px;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

/* ------------------------------------------------------------
   FOCUS-VISIBLE (WCAG 2.4.7)
   ------------------------------------------------------------ */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn:focus-visible,
.site-nav a:focus-visible,
.mobile-nav a:focus-visible,
.hamburger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}