:root {
  --bark: #1c1710;
  --bark-2: #2a2318;
  --moss: #7d9a6a;
  --moss-deep: #4f6a43;
  --gold: #e0b45a;
  --gold-dim: #b8893a;
  --cream: #f4e6c8;
  --ink: #f7efe0;
  --muted: #cbbda3;
  --berry: #c45c4a;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(224, 180, 90, 0.12), transparent 55%),
    radial-gradient(800px 500px at 100% 100%, rgba(125, 154, 106, 0.12), transparent 50%),
    var(--bark);
}

.page {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 64px;
}

.hero {
  text-align: center;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--gold);
  font-family: "Segoe UI", system-ui, sans-serif;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cream);
}

.lede {
  margin: 10px auto 0;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.45;
}

.status {
  text-align: center;
  min-height: 1.5em;
  margin: 8px 0 18px;
  color: var(--muted);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.95rem;
}

.status[data-kind="error"] {
  color: #f0a090;
}

.status[data-kind="warn"] {
  color: var(--gold);
}

.actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
}

button {
  font: inherit;
  cursor: pointer;
}

.actions button {
  border: 1px solid rgba(224, 180, 90, 0.45);
  background: linear-gradient(180deg, #3a3124, #2b241a);
  color: var(--cream);
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-weight: 650;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow);
}

.actions button:hover:not(:disabled) {
  border-color: var(--gold);
  color: white;
}

.actions button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

#open-btn {
  background: linear-gradient(180deg, #6f8b5c, #4d6842);
  border-color: #9fb88c;
}

.pack {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px 14px;
}

.card {
  appearance: none;
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  display: grid;
  gap: 8px;
  cursor: pointer;
  animation: deal 0.45s ease backwards;
  animation-delay: var(--delay, 0ms);
}

.card-stack {
  position: relative;
  aspect-ratio: 63 / 88;
  perspective: 1100px;
}

.card-flipper {
  position: absolute;
  inset: 0;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  transform-origin: center center;
  transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.card.revealed .card-flipper {
  transform: rotateY(180deg);
}

.card.instant .card-flipper {
  transition: none;
}

.card-face {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.card-back {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  background:
    radial-gradient(circle at 50% 30%, rgba(224, 180, 90, 0.18), transparent 42%),
    repeating-linear-gradient(
      135deg,
      #2b241b 0 10px,
      #241e16 10px 20px
    );
  border: 2px solid var(--gold-dim);
  transform: rotateY(0deg);
}

.card-back-mark {
  font-size: 1.35rem;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.card-back-hint {
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.card-front {
  background: #111;
  transform: rotateY(180deg);
}

.card:focus-visible .card-stack {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.card-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.card.foil .card-front::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    115deg,
    transparent 20%,
    rgba(255, 255, 255, 0.08) 35%,
    rgba(180, 255, 230, 0.28) 48%,
    rgba(255, 210, 120, 0.22) 58%,
    transparent 75%
  );
  background-size: 220% 220%;
  animation: sheen 2.8s linear infinite;
  mix-blend-mode: screen;
  pointer-events: none;
}

.card-caption {
  text-align: center;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.site-footer {
  margin-top: 40px;
  text-align: center;
  color: #9d8f78;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.82rem;
}

.site-footer a {
  color: var(--gold);
}

@keyframes deal {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes sheen {
  from {
    background-position: 120% 0;
  }
  to {
    background-position: -20% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-flipper {
    transition: none;
  }
}

@media (max-width: 900px) {
  .pack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .pack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}