/* ============================================
   Index — index.css
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,wght@0,300;0,400;0,500;1,300&family=DM+Mono:wght@300;400&display=swap');

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

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --mid: #888888;
  --rule-color: #d0d0d0;
}

html, body {
  background: var(--white);
  color: var(--black);
  min-height: 100vh;
  font-family: 'DM Sans', Helvetica Neue, Arial, sans-serif;
}

/* ---- HEADER ---- */

header {
  padding: 2rem 3rem 0;
}

.site-name {
  display: block;
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--black);
  margin-bottom: 1rem;
}

.rule {
  border: none;
  border-top: 1px solid var(--rule-color);
}

/* ---- GRID ---- */

main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 6rem);
  padding: 3rem;
}

.grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  align-items: center;
}

/* ---- TILE ---- */

.tile {
  display: block;
  width: 180px;
  height: 144px;
  overflow: hidden;
  cursor: pointer;
  flex-shrink: 0;
}

.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(100%);
  transition: transform 0.5s ease, filter 0.4s ease;
}

.tile:hover img {
  transform: scale(1.06);
  filter: grayscale(60%);
}

/* ---- RESPONSIVE ---- */

@media (max-width: 600px) {
  header {
    padding: 1.5rem 1.25rem 0;
  }

  main {
    padding: 2rem 1.25rem;
    min-height: calc(100vh - 5rem);
  }

  .tile {
    width: 140px;
    height: 112px;
  }
}