/* ===================================
   GartenCarré 24 — Stylesheet
   Modern Real Estate Landing Page
   =================================== */

:root {
  --primary: #2d3436;
  --accent: #00b4d8;
  --accent-dark: #0096b7;
  --white: #ffffff;
  --off-white: #f8f9fa;
  --light-gray: #e9ecef;
  --mid-gray: #6c757d;
  --dark: #1a1a2e;
  --success: #2ecc71;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --max-width: 1200px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  color: var(--primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-dark); }

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

section { padding: 80px 0; }

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
  color: var(--dark);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--mid-gray);
  margin-bottom: 48px;
  max-width: 640px;
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: box-shadow var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.5px;
}

.nav-brand span { color: var(--accent); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-links a:hover::after { width: 100%; }
.nav-links a:hover { color: var(--accent); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 2px;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,0.75) 0%, rgba(0,180,216,0.25) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  color: var(--white);
  max-width: 700px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -1px;
  line-height: 1.1;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 36px;
  line-height: 1.6;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0,180,216,0.3);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,180,216,0.4);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  color: var(--white);
}

.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== INTRO / KEY FACTS ===== */
.intro { background: var(--white); }

.intro-text {
  font-size: 1.3rem;
  color: var(--mid-gray);
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
  line-height: 1.8;
}

.key-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.fact-card {
  text-align: center;
  padding: 32px 16px;
  border-radius: var(--radius);
  background: var(--off-white);
  border: 1px solid var(--light-gray);
  transition: all var(--transition);
}

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

.fact-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.fact-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 4px;
}

.fact-label {
  font-size: 0.85rem;
  color: var(--mid-gray);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* ===== VARIANTEN ===== */
.varianten {
  background: var(--off-white);
}

.variant-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.variant-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
  border: 2px solid transparent;
}

.variant-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.variant-card.featured {
  border-color: var(--accent);
}

.variant-badge {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--accent);
  color: var(--white);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.variant-header {
  padding: 36px 28px 20px;
  text-align: center;
  border-bottom: 1px solid var(--light-gray);
}

.variant-name {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--mid-gray);
  font-weight: 600;
  margin-bottom: 8px;
}

.variant-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.variant-price {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent);
}

.variant-price small {
  font-size: 0.9rem;
  color: var(--mid-gray);
  font-weight: 400;
}

.variant-body {
  padding: 28px;
  flex: 1;
}

.variant-tagline {
  font-style: italic;
  color: var(--mid-gray);
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.variant-features {
  list-style: none;
}

.variant-features li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--light-gray);
}

.variant-features li:last-child { border-bottom: none; }

.variant-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

.variant-footer {
  padding: 20px 28px 28px;
}

.variant-footer .btn {
  width: 100%;
  justify-content: center;
}

/* ===== VIDEO ===== */
.video-section {
  background: var(--dark);
  color: var(--white);
}

.video-section h2 { color: var(--white); }
.video-section .section-subtitle { color: rgba(255,255,255,0.7); }

.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-credit {
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
  margin-top: 1.5rem;
}

/* ===== GALERIE ===== */
.galerie { background: var(--white); }

.gallery-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 36px;
}

.gallery-tab {
  padding: 10px 24px;
  border-radius: 50px;
  border: 2px solid var(--light-gray);
  background: var(--white);
  color: var(--mid-gray);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
}

.gallery-tab.active,
.gallery-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,180,216,0.05);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gallery-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  aspect-ratio: 16/10;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.gallery-item::after {
  content: '🔍';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity var(--transition);
  font-size: 2rem;
}

.gallery-item:hover::after { opacity: 1; }

.gallery-item.hidden { display: none; }

/* Floor plan items need different aspect ratio */
.gallery-item[data-category="grundrisse"] {
  aspect-ratio: auto;
}

/* ===== LIGHTBOX ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.92);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.lightbox.active { display: flex; }

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 24px; right: 32px;
  background: none;
  border: none;
  color: white;
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 8px;
  opacity: 0.7;
  transition: opacity var(--transition);
}

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

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  padding: 16px 20px;
  border-radius: 50%;
  transition: background var(--transition);
}

.lightbox-nav:hover { background: rgba(255,255,255,0.2); }
.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

/* ===== AUSSTATTUNG ===== */
.ausstattung { background: var(--off-white); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--light-gray);
  transition: all var(--transition);
}

.feature-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-item .icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.feature-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--dark);
}

.feature-item p {
  font-size: 0.8rem;
  color: var(--mid-gray);
}

.energy-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, #00b894, #00cec9);
  color: white;
  padding: 16px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1.1rem;
  margin-top: 40px;
}

/* ===== LAGE ===== */
.lage { background: var(--white); }

.lage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.lage-text p {
  font-size: 1.05rem;
  color: var(--mid-gray);
  margin-bottom: 28px;
  line-height: 1.8;
}

.lage-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.lage-highlight {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--off-white);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
}

.lage-highlight .icon { font-size: 1.4rem; }

.lage-map {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4/3;
}

.lage-map iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ===== BAUTRÄGER ===== */
.bautraeger {
  background: var(--dark);
  color: var(--white);
  text-align: center;
  padding: 60px 0;
}

.bautraeger h2 { color: var(--white); }

.bautraeger-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.bautraeger-logo {
  max-width: 200px;
  border-radius: var(--radius-sm);
}

.bautraeger-text {
  max-width: 500px;
  text-align: left;
}

.bautraeger-text p {
  color: rgba(255,255,255,0.75);
  font-size: 1.05rem;
  line-height: 1.8;
}

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

.kontakt-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.kontakt-info h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--dark);
}

.kontakt-detail {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.kontakt-detail .icon { font-size: 1.5rem; }

.kontakt-detail a { color: var(--primary); }
.kontakt-detail a:hover { color: var(--accent); }

.bezugstermin {
  margin-top: 28px;
  padding: 20px 24px;
  background: linear-gradient(135deg, rgba(0,180,216,0.08), rgba(0,180,216,0.03));
  border: 1px solid rgba(0,180,216,0.2);
  border-radius: var(--radius);
}

.bezugstermin strong {
  display: block;
  font-size: 1.3rem;
  color: var(--accent);
}

.contact-form {
  background: var(--white);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font);
  transition: border-color var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.5);
  padding: 32px 0;
  text-align: center;
  font-size: 0.85rem;
}

.footer a {
  color: rgba(255,255,255,0.5);
  margin: 0 12px;
}

.footer a:hover { color: var(--white); }

/* ===== MOBILE ===== */
@media (max-width: 968px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--white);
    padding: 24px;
    gap: 20px;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--light-gray);
  }

  .hero h1 { font-size: 2.4rem; }
  .hero p { font-size: 1rem; }
  
  .key-facts { grid-template-columns: repeat(2, 1fr); }
  .variant-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .lage-grid { grid-template-columns: 1fr; }
  .kontakt-grid { grid-template-columns: 1fr; }
  
  h2 { font-size: 1.8rem; }
  section { padding: 60px 0; }
  
  .hero-buttons { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}

@media (max-width: 640px) {
  .key-facts { grid-template-columns: 1fr 1fr; gap: 12px; }
  .feature-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .gallery-grid { grid-template-columns: 1fr; }
  .lage-highlights { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  
  .hero h1 { font-size: 2rem; }
  .variant-price { font-size: 2rem; }
  
  .lightbox { padding: 16px; }
  .lightbox-nav { padding: 10px 14px; font-size: 1.5rem; }
}