/* ===== Reset ===== */
* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #1e1e2f, #0e0e15);
  color: #fff;
}

/* ===== Header ===== */
header {
  text-align: center;
  padding: 12px 8px;
}

header h1 {
  margin: 0;
  font-size: 1.6rem;
}

header p {
  margin: 2px 0 0;
  opacity: 0.65;
  font-size: 0.85rem;
}

/* ===== Layout ===== */
main {
  padding: 8px;
  max-width: 1200px;
  margin: auto;
}

/* ===== Button ===== */
#randomBtn {
  width: 100%;
  padding: 10px;
  font-size: 0.95rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
  background: linear-gradient(135deg, #ffb347, #ffcc33);
  color: #000;
  margin-bottom: 8px;
}

/* ===== Result ===== */
.result {
  text-align: center;
  font-size: 1.05rem;
  padding: 8px;
  border-radius: 12px;
  background: rgba(255,255,255,0.08);
  margin-bottom: 8px;
  animation: pop 0.3s ease;
}

.hidden {
  display: none;
}

@keyframes pop {
  from { transform: scale(0.92); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

/* ===== Deck ===== */
.deck {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
}

/* ===== Card ===== */
.card {
  background: linear-gradient(145deg, #2a2a3f, #1a1a2b);
  border-radius: 10px;
  padding: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.45);
}

.card.highlight {
  outline: 2px solid #ffcc33;
  animation: highlight 0.5s ease;
}

@keyframes highlight {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.06); }
  100% { transform: scale(1); }
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  line-height: 1;
}

.value {
  font-size: 1rem;
  font-weight: 700;
}

.suit {
  font-size: 1.1rem;
}

.suit.red {
  color: #ff5a5a;
}

.food {
  margin-top: 4px;
  font-size: 0.85rem;
  opacity: 0.9;
}

/* ===== Tablet ===== */
@media (min-width: 600px) {
  .deck {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
}

/* ===== Desktop ===== */
@media (min-width: 900px) {
  header h1 {
    font-size: 2rem;
  }

  #randomBtn {
    width: auto;
    padding: 10px 20px;
    margin: 0 auto 10px;
    display: block;
  }

  .deck {
    grid-template-columns: repeat(4, 1fr);
  }
}