@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'IBM Plex Sans', sans-serif;
  background-color: #12100E;
  color: #F3EFE8;
}

.font-display { font-family: 'Space Grotesk', sans-serif; }
.font-mono { font-family: 'IBM Plex Mono', monospace; }

/* Visible keyboard focus, kept consistent across the site */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #C68A2E;
  outline-offset: 3px;
}

/* Element-tile: the site's signature motif, a periodic-table-style card */
.tile {
  position: relative;
  border: 1px solid #332C24;
  background: #1E1A16;
  border-radius: 2px;
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.tile:hover {
  border-color: #C68A2E;
}

.tile-featured {
  border-color: #C68A2E;
  background: #241D14;
}

.tile-featured .tile-number,
.tile-featured .tile-label {
  color: #D9A75A;
}

.tile-featured:hover {
  transform: translateY(-2px);
}

.tile-number {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: #A79C8D;
  letter-spacing: 0.05em;
}

.tile-symbol {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  color: #F3EFE8;
}

.tile-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #A79C8D;
}

/* Reveal-on-scroll, respects reduced motion */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Placeholder image blocks used throughout case studies */
.placeholder-img {
  background-image: repeating-linear-gradient(
    135deg,
    #1E1A16,
    #1E1A16 10px,
    #241F19 10px,
    #241F19 20px
  );
  border: 1px dashed #332C24;
}