html,
body {
  margin: 0;
  padding: 0;
  background: #000;
  overscroll-behavior-y: none;
  overflow: hidden;
  transition: background 1.6s ease-out;
}

body.fade-bg {
  background: #1c1b19;
  transition: background 0.8s ease-out;
}

#ocean-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0;
  transition: opacity 2s ease-out;
}

#ocean-canvas.visible {
  opacity: 1;
}

body {
  font-family: "Crimson Text", serif;
  font-size: 1.2rem;
  font-weight: 400;
}

main {
  position: relative;
  z-index: 1;
  min-width: 100%;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.card-container {
  cursor: pointer;
  opacity: 0;
  transition: opacity 1.2s ease-out;
  position: relative;
  pointer-events: auto;
}

.card-container.visible {
  opacity: 1;
}

/* Front card - always visible, compact */
.card-front {
  background-color: rgba(248, 246, 243, 0.85);
  border-radius: 8px;
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.2),
    0 16px 48px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: #3a3530;
  padding: 1.8em 2.5em;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 2;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.card-front::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, transparent 50%, rgba(0, 0, 0, 0.03) 100%);
  pointer-events: none;
  border-radius: 8px;
}

.card-container.expanded .card-front {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
}

.card-front img.avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  margin-bottom: 0.7em;
}

.card-front h1 {
  font-weight: 600;
  font-size: 1.6rem;
  color: #996515;
  margin: 0 0 0.25em 0;
}

.card-front .tagline {
  font-size: 0.95rem;
  color: #5a554f;
  margin: 0;
  font-style: italic;
}

.card-front .hint {
  margin-top: 1.2em;
  font-size: 0.75rem;
  color: #a09890;
  letter-spacing: 0.05em;
}

/* Back card - expands from center */
.card-back {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: min(840px, 85vw);
  background-color: rgba(248, 246, 243, 0.9);
  border-radius: 8px;
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.2),
    0 16px 48px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: #3a3530;
  padding: clamp(1.5em, 3vw, 2.2em);
  font-size: clamp(0.85rem, 0.6rem + 0.85vw, 1.3rem);
  opacity: 0;
  pointer-events: none;
  z-index: 1;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.card-back::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, transparent 50%, rgba(0, 0, 0, 0.03) 100%);
  pointer-events: none;
  border-radius: 8px;
}

.card-container.expanded .card-back {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: auto;
  z-index: 3;
}

.card-back-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.card-back-inner img.avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  margin-bottom: 0.5em;
}

.card-back-inner > h1 {
  font-weight: 600;
  font-size: 1.5em;
  color: #996515;
  margin: 0 0 0.6em 0;
}

.card-back-content {
  text-align: left;
  width: 100%;
}

.card-back p {
  margin: 0 0 0.8em 0;
  line-height: 1.5;
}

.card-back ul {
  list-style: disc;
  margin: 0;
  padding: 0 0 0 1.15em;
  column-count: 2;
  column-gap: 1.5em;
}

.card-back li {
  margin-bottom: 0.25em;
}

.card-back a {
  color: #996515;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
  padding: 2px 6px;
  margin: -2px -6px;
  border-radius: 4px;
}

.card-back a:hover {
  color: #d4a544;
  background: linear-gradient(135deg, rgba(153, 101, 21, 0.15) 0%, rgba(212, 165, 68, 0.25) 100%);
  text-shadow: 0 0 8px rgba(212, 165, 68, 0.4);
}

.card-back .hint {
  margin-top: 1em;
  text-align: center;
  font-size: 0.7em;
  color: #a09890;
  letter-spacing: 0.05em;
}

@media only screen and (max-width: 600px) {
  .card-back ul {
    column-count: 1;
  }
}

@media only screen and (max-aspect-ratio: 3 / 4) and (max-width: 1100px) {
  .card-back {
    width: min(840px, 88vw);
  }
}