@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  --color-black: #000000;
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-camel: #c19a6b;
  --color-oat: #d4c5b9;
  --color-navy: #1e3a5f;
  --color-gold: #b8860b;
  --color-bronze: #cd7f32;
  --font-primary: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.8s ease-out forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hover-scale {
  transition: transform 0.3s ease;
}

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

.image-overlay {
  position: relative;
  overflow: hidden;
}

.image-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.4) 100%);
  z-index: 1;
}

.text-overlay {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  right: 2rem;
  color: var(--color-white);
  z-index: 2;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.masonry-grid {
  column-count: 3;
  column-gap: 1.5rem;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 1.5rem;
}

.filter-button {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-gray-300);
  background-color: var(--color-white);
  color: var(--color-gray-700);
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-button:hover,
.filter-button.active {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  border-color: var(--color-gray-900);
}

.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-400);
  text-align: center;
  padding: 2rem 0;
  margin-top: 4rem;
}

@media (max-width: 768px) {
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .masonry-grid {
    column-count: 2;
  }
  
  .text-overlay {
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
  }
}

@media (max-width: 480px) {
  .masonry-grid {
    column-count: 1;
  }
}