/* ─────────────── Card Styles ─────────────── */
.card-area { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.card-area .card {
  position: relative;
  width: 200px;   /* CAH card width */
  height: 280px;  /* CAH card height */
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 1rem;
  line-height: 1.3;
  cursor: pointer;
  user-select: none;
  transition: transform .1s ease;
}
.card-area .card:hover { transform: scale(1.05); }

/* Black cards */
.card.black {
  background: #333;
  color: #eee;
  border: 2px solid #222;
}

/* White cards */
.card.white {
  background: #fff;
  color: #111;
  border: 2px solid #ccc;
}

/* Disabled state after play */
.card.disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* ───────────── Login & Layout (unchanged) ───────────── */
* { box-sizing: border-box; }
body {
    margin: 0; padding: 0;
    background: #111; color: #eee;
    font-family: Arial, sans-serif;
}
.login-box {
    max-width: 400px; margin: 100px auto;
    padding: 20px; background: #222; border-radius: 8px;
    text-align: center;
}
.login-box input {
    width: 80%; margin: 10px 0; padding: 10px;
    border: none; border-radius: 4px;
}
.login-box button {
    padding: 10px 20px; border: none;
    border-radius: 4px; cursor: pointer;
}
.login-box .error { color: #f66; }
#game { padding: 20px; max-width: 1000px; margin: 20px auto; }
header { display: flex; justify-content: space-between; align-items: center; }