/* ==========================================================================
   Vulkanquartiere - Modern Luxury & Nature Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --color-forest-900: #0f1d15;
  --color-forest-800: #172c20;
  --color-forest-700: #1e392a;
  --color-forest-600: #294c38;
  --color-forest-500: #3a684e;
  
  --color-sage-100: #f2f7f4;
  --color-sage-200: #e2ede6;
  --color-sage-300: #c7ddd0;

  --color-earth-50: #faf8f5;
  --color-earth-100: #f4f0e8;
  --color-earth-200: #e9e3d7;

  --color-gold: #c29b38;
  --color-gold-hover: #ab862b;

  --color-text-main: #1c221e;
  --color-text-muted: #57625b;
  --color-text-light: #818f86;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(15, 29, 21, 0.04);
  --shadow-md: 0 10px 30px -10px rgba(15, 29, 21, 0.08);
  --shadow-lg: 0 20px 45px -12px rgba(15, 29, 21, 0.14);
  --shadow-glow: 0 12px 35px rgba(30, 57, 42, 0.25);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-earth-50);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
}

h1, h2, h3, h4, .font-serif {
  font-family: var(--font-serif);
  line-height: 1.2;
}

/* High-Performance Navigation & Card Styles (Zero Lag) */
.glass-nav {
  background: #ffffff;
  border-bottom: 1px solid #e7e5e4;
  transition: box-shadow 0.2s ease;
}

.glass-nav.scrolled {
  background: #ffffff;
  box-shadow: 0 4px 20px -4px rgba(0, 0, 0, 0.08);
}

.glass-card {
  background: #ffffff;
  border: 1px solid #e7e5e4;
}

.glass-panel-dark {
  background: #0f1d15;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Luxury Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--color-forest-700) 0%, var(--color-forest-800) 100%);
  color: #ffffff;
  font-weight: 600;
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-glow);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(23, 44, 32, 0.35);
  background: linear-gradient(135deg, var(--color-forest-600) 0%, var(--color-forest-700) 100%);
  color: #ffffff;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: #ffffff;
  color: var(--color-forest-700);
  font-weight: 600;
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-sage-300);
  transition: all 0.25s ease;
  text-decoration: none;
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--color-sage-100);
  border-color: var(--color-forest-600);
  color: var(--color-forest-800);
  transform: translateY(-2px);
}

.btn-gold {
  background: linear-gradient(135deg, #d4a942 0%, #b88f28 100%);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(194, 155, 56, 0.35);
}

.btn-gold:hover {
  box-shadow: 0 12px 30px rgba(194, 155, 56, 0.45);
  transform: translateY(-2px);
}

/* Image Card Hover Zoom (GPU Accelerated) */
.img-zoom-container {
  overflow: hidden;
}

.img-zoom-container img {
  will-change: transform;
  transition: transform 0.4s ease;
}

.img-zoom-container:hover img {
  transform: scale(1.04);
}

/* Badge System */
.badge-nature {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.85rem;
  background-color: var(--color-sage-200);
  color: var(--color-forest-800);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-gold {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.85rem;
  background: rgba(194, 155, 56, 0.15);
  color: #8f6e1f;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-earth-100);
}

::-webkit-scrollbar-thumb {
  background: var(--color-forest-500);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-forest-700);
}

/* Lightbox Modal */
#gallery-modal {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

#gallery-modal.active {
  opacity: 1;
  pointer-events: auto;
}

#gallery-modal .modal-content {
  transform: scale(0.96);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

#gallery-modal.active .modal-content {
  transform: scale(1);
}

/* Thumbnail Strip */
.thumb-item {
  opacity: 0.5;
  transition: all 0.2s ease;
  cursor: pointer;
}

.thumb-item.active {
  opacity: 1;
  border-color: #ffffff;
  transform: scale(1.05);
}

/* Smooth Tab Transitions */
.tab-btn.active {
  background: var(--color-forest-700);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(30, 57, 42, 0.25);
}