* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  height: 100%;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow: hidden;
}

/* Each background layer is a full-screen blurred/darkened image.
   They're stacked on top of each other and crossfade via opacity. */
.bg-layer {
  position: fixed;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: blur(6px) brightness(0.55);
  transform: scale(1.08); /* avoid blurred edge showing at viewport edges */
  transition: opacity 0.6s ease;
  z-index: 0;
}

/* If you use .png instead of .jpg, change the extensions below to match. */
.bg-default { background-image: url("backgrounds/default.jpg"); opacity: 1; }
.bg-season1 { background-image: url("backgrounds/season1.jpg"); opacity: 0; }
.bg-season2 { background-image: url("backgrounds/season2.jpg"); opacity: 0; }

.bg-default.active { opacity: 1; }
.bg-season1.active { opacity: 1; }
.bg-season2.active { opacity: 1; }

/* Extra dark scrim on top for text legibility, independent of brightness filter */
.bg-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 1;
}

.content {
  position: relative;
  z-index: 2;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 48px;
  color: #ffffff;
  text-align: center;
  padding: 24px;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 800;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
}

.seasons {
  display: flex;
  gap: clamp(32px, 10vw, 96px);
}

.season {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #ffffff;
}

.badge {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 3px solid #ffffff;
  background: rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease;
}

.season:hover .badge,
.season:focus-visible .badge {
  transform: scale(1.08);
  background: rgba(255, 255, 255, 0.25);
}

.label {
  font-size: 1.1rem;
  font-weight: 500;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
}

.suggest-link {
  color: #ffffff;
  opacity: 0.85;
  font-size: 0.95rem;
  text-decoration: none;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
}

.suggest-link:hover {
  opacity: 1;
  text-decoration: underline;
}