:root {
  --ravens-green: #333E21;
  --ravens-sage: #8A8C7C;
  --ravens-olive: #6B705C;
  --card-size: 300px;
  --card-gap: 24px;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--ravens-green);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #FFFFFF;
}

.prep {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 32px 16px;
  overflow: hidden;
}

/* Single faded brand mark behind the whole grid */
.page-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 85vw;
  height: auto;
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
  animation: page-logo-fade 7s ease forwards;
}

@keyframes page-logo-fade {
  from { opacity: 0; }
  to   { opacity: 0.05; }
}

.prompt,
.grid,
.home-link {
  position: relative;
  z-index: 1;
}

.home-link {
  font-size: 12px;
  color: var(--ravens-sage);
  text-decoration: none;
  letter-spacing: 0.5px;
  transition: color 0.2s ease;
  animation: fade-in 5s ease 2s both;
}

.home-link:hover {
  color: #FFFFFF;
}

.prompt {
  margin: 0;
  color: #FFFFFF;
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  text-align: center;
  animation: fade-in 2s ease 1s both;
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, var(--card-size)));
  gap: var(--card-gap);
  justify-content: center;
  animation: fade-in 2s ease 0.2s both;
}

@media (max-width: 720px) {
  .grid {
    grid-template-columns: minmax(0, var(--card-size));
  }
}

.card {
  position: relative;
  display: block;
  width: var(--card-size);
  height: var(--card-size);
  max-width: 100%;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--ravens-sage);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  background-color: var(--ravens-green);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1);
  transition: transform 0.35s ease;
}

/* Olive tint, 10% by default, fades to 0 on hover */
.shade {
  position: absolute;
  inset: 0;
  background-color: var(--ravens-green);
  opacity: 0.65;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.card-title {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 20px;
  text-align: center;
  color: #FFFFFF;
  font-size: 34px;
  font-weight: 300;
  letter-spacing: 0.5px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
  transition: transform 0.3s ease, font-size 0.3s ease;
  pointer-events: none;
}

.card-desc {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 30px;
  text-align: center;
  color: #FFFFFF;
  font-size: 0.9rem;
  line-height: 1.3;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.7);
  pointer-events: none;
}

/* ---- Hover choreography ---- */
.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.45);
}

.card:hover .card-img {
  transform: scale(1.10);
}

.card:hover .shade {
  opacity: 0;
}

.card:hover .card-title {
  font-size: calc(34px + 8px);
  transform: translateY(-50px);
}

.card:hover .card-desc {
  opacity: 1;
  transform: translateY(0);
}

/* Corner brand mark: rests clipped above the card, eases in on hover
   to sit 10px from the top and right edges. */
.corner-logo {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 60px;
  height: 60px;
  object-fit: contain;
  opacity: 0;
  transform: translate(80px, -80px);
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.35s ease;
  pointer-events: none;
  z-index: 2;
}

.card:hover .corner-logo {
  opacity: 0.60;
  transform: translate(0, 0);
}

.card:focus-visible {
  outline: 2px solid #FFFFFF;
  outline-offset: 3px;
}