/* ========================= */
/* CASINO-TYYLINEN TAUSTA */
/* ========================= */

body {
  margin: 0;
  font-family: "Trebuchet MS", Arial, sans-serif;
  background: radial-gradient(circle at top, #1b5e20, #0b2e13);
  color: #f5f5f5;
  text-align: center;
  min-height: 100vh;
}

/* ========================= */
/* YLÄPALKKI */
/* ========================= */

.top-header {
  background: linear-gradient(90deg, #2e7d32, #1b5e20);
  color: white;
  padding: 1em;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
}

.top-header h1 {
  margin: 0;
  font-size: 1.5em;
  letter-spacing: 1px;
}

/* Takaisin-nappi */
.card-button {
  position: absolute;
  left: 1em;
  background: rgba(255,255,255,0.15);
  color: white;
  padding: 0.5em 0.9em;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 0.9em;
}

.card-button:hover {
  background: rgba(255,255,255,0.3);
}

/* ========================= */
/* PELIALUE */
/* ========================= */

.card-game {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 2em;
}

/* Kortti */
.card-image {
  max-width: 400px;
  max-height: 500px;
  border-radius: 14px;
  box-shadow: 0 12px 25px rgba(0,0,0,0.6);
  cursor: pointer;
  transition: transform 0.15s ease;
}

.card-image:active {
  transform: scale(0.96);
}

/* ========================= */
/* LOPPUNÄKYMÄ */
/* ========================= */

.end-screen {
  display: none;
  margin-top: 2em;
}

.end-screen h2 {
  margin-bottom: 1em;
  font-size: 1.6em;
}

/* ========================= */
/* NAPPI */
/* ========================= */

.button {
  padding: 0.8em 1.6em;
  background: linear-gradient(#ffd54f, #ffb300);
  border: none;
  border-radius: 10px;
  font-weight: bold;
  font-size: 1em;
  cursor: pointer;
  color: #333;
  box-shadow: 0 4px 8px rgba(0,0,0,0.4);
}

.button:hover {
  background: linear-gradient(#ffeb3b, #f9a825);
}

/* ========================= */
/* MOBIILI */
/* ========================= */

@media (max-width: 600px) {
  .card-image {
    width: 90vw;        /* 80 % näytön leveydestä */
    max-width: 320px;  /* mutta ei liian isoksi */
    height: auto;      /* säilyttää mittasuhteet */
  }

  .top-header h1 {
    font-size: 1.3em;
  }
}