:root {
  --main-bg-color: #333;
  --game-container-bg-color: #333;
  --game-over-bg-color: #111;
  --card-bg-color: #eee;
  --card-hidden-bg-color: #666;
  --text-color: #eee;
  --text-dark-color: #333;
  --accent-color: #61dafb;
  --accent-hover-color: #4fa3d1;
  --gold-color: #ffd700;
  --button-bg-color: #61dafb;
  --button-hover-color: #4fa3d1;
  --button-text-color: #fff;
  --bet-button-bg-color: #444;
  --bet-button-hover-color: #555;
  --new-game-button-bg-color: #ff6b6b;
  --new-game-button-hover-color: #e04040;
  --footer-bg-color: #222;
  --footer-text-color: #888;
  --footer-link-color: #61dafb;
  --footer-link-hover-color: #4fa3d1;
  --box-shadow: 0 6px 12px rgba(0, 0, 0, 0.6);
  --inset-box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.4);
  --card-box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
  --button-box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
  --new-game-button-box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--main-bg-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  transition: background-color 0.3s ease;
  overflow: hidden;
  padding: 10px;
}

body.game-over {
  background-color: var(--game-over-bg-color);
}

#game-container {
  background-color: var(--game-container-bg-color);
  border-radius: 15px;
  padding: 20px;
  box-shadow: var(--box-shadow);
  width: 100%;
  max-width: 600px;
  transition: background-color 0.3s ease, transform 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.5s ease-out forwards;
}

#game-container.game-over {
  background-color: var(--main-bg-color);
}

header {
  text-align: center;
  margin-bottom: 20px;
  opacity: 0;
  transform: translateY(-20px);
  animation: slideInHeader 0.5s ease-out 0.2s forwards;
}

h1 {
  color: var(--accent-color);
  font-size: 2.5em;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
  letter-spacing: 2px;
}

h2 {
  margin-bottom: 10px;
  font-size: 1.6em;
}

.dealer-section,
.player-section {
  margin-bottom: 20px;
}

.dealer-info,
.player-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.score {
  font-size: 1.4em;
  font-weight: bold;
}

.money {
  font-size: 1.4em;
  font-weight: bold;
  color: var(--gold-color);
  position: relative;
  overflow: visible;
}

.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 80px;
  border: 1px solid #555;
  padding: 8px;
  border-radius: 10px;
  background-color: #444;
  box-shadow: var(--inset-box-shadow);
  position: relative;
  overflow: hidden;
}

.card {
  width: 50px;
  height: 70px;
  background-color: var(--card-bg-color);
  border-radius: 6px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1em;
  color: var(--text-dark-color);
  border: 1px solid #ccc;
  box-shadow: var(--card-box-shadow);
  transition: transform 0.2s ease, opacity 0.3s ease;
  position: absolute;
  opacity: 0;
}

.card.hidden {
  background-color: var(--card-hidden-bg-color);
  color: var(--card-hidden-bg-color);
}

.card:hover {
  transform: scale(1.05);
}

.game-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.bet-area {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
  border: 2px solid var(--accent-color);
  padding: 15px;
  border-radius: 10px;
  opacity: 0;
  transform: translateY(20px);
  animation: slideInBetArea 0.5s ease-out 0.4s forwards;
}

.bet-options {
  margin-bottom: 10px;
}

.bet-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.bet-amount {
  background-color: var(--bet-button-bg-color);
  color: var(--button-text-color);
  border: none;
  padding: 10px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 1em;
  transition: background-color 0.3s, transform 0.2s ease;
  box-shadow: var(--button-box-shadow);
  border: 2px solid transparent;
}

.bet-amount:hover {
  background-color: var(--bet-button-hover-color);
  transform: translateY(-2px);
}

.bet-amount.selected {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

.bet-input-area {
  display: flex;
  justify-content: center;
}

.bet-input-container {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 300px;
}

#bet-input {
  padding: 10px;
  border: 2px solid var(--accent-color);
  border-radius: 20px;
  color: var(--button-text-color);
  background-color: var(--bet-button-bg-color);
  flex-grow: 1;
  text-align: center;
  font-size: 1em;
}

#bet-input::placeholder {
  color: #ccc;
}

.action-buttons {
  display: flex;
  gap: 10px;
  opacity: 0;
  transform: translateY(20px);
  animation: slideInActionButtons 0.5s ease-out 0.6s forwards;
  justify-content: center;
}

.game-button,
#new-game-button {
  background-color: var(--button-bg-color);
  color: var(--button-text-color);
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1em;
  transition: background-color 0.3s, transform 0.2s ease;
  box-shadow: var(--button-box-shadow);
}

.game-button:hover,
#new-game-button:hover {
  background-color: var(--button-hover-color);
  transform: translateY(-2px);
}

.action-button {
  background-color: var(--bet-button-bg-color);
}

.action-button:hover {
  background-color: var(--bet-button-hover-color);
}

.button-container {
  display: flex;
  justify-content: center;
}

#new-game-button {
  background-color: var(--new-game-button-bg-color);
  box-shadow: var(--new-game-button-box-shadow);
  width: 150px;
}

#new-game-button:hover {
  background-color: var(--new-game-button-hover-color);
}

#result-container {
  margin-bottom: 50px;
}

.result-message {
  text-align: center;
  font-size: 1.4em;
  padding: 10px;
  border-radius: 10px;
  margin-top: 15px;
  font-weight: bold;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.hidden {
  display: none;
}

.money-change-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  overflow: hidden;
}

.money-change-digit {
  position: absolute;
  font-size: 2em;
  font-weight: bold;
  white-space: nowrap;
  opacity: 1;
}

.money-change-digit.gain {
  color: green;
}

.money-change-digit.loss {
  color: red;
}

@keyframes moneyDigitPop {
  0% {
    transform: translateY(0) scale(1);
    opacity: 0;
  }
  50% {
    transform: translateY(-20px) scale(1.5);
    opacity: 1;
  }
  100% {
    transform: translateY(-40px) scale(1);
    opacity: 0;
  }
}

footer {
  text-align: center;
  padding: 10px;
  background-color: var(--footer-bg-color);
  color: var(--footer-text-color);
  font-size: 0.9em;
  margin-top: 20px;
  width: 100%;
  border-radius: 15px;
  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.4);
}

.creator-info a {
  color: var(--footer-link-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.creator-info a:hover {
  color: var(--footer-link-hover-color);
}

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInHeader {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInBetArea {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInActionButtons {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInResultMessage {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInFooter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 601px) {
  #game-container {
    padding: 30px;
    max-width: 900px;
  }

  h1 {
    font-size: 3em;
  }

  h2 {
    font-size: 2em;
  }

  .cards {
    gap: 10px;
    min-height: 100px;
    padding: 10px;
  }

  .card {
    width: 70px;
    height: 90px;
    font-size: 1.3em;
    border-radius: 8px;
  }

  .game-controls {
    gap: 15px;
    margin-bottom: 30px;
  }

  .bet-area {
    padding: 20px;
    gap: 10px;
  }

  .bet-buttons {
    gap: 10px;
  }

  .bet-amount {
    padding: 12px 18px;
    border-radius: 25px;
    font-size: 1.1em;
  }

  #bet-input {
    padding: 12px;
    border-radius: 25px;
    font-size: 1.1em;
  }

  .action-buttons {
    gap: 15px;
  }

  .game-button,
  #new-game-button {
    padding: 12px 18px;
    border-radius: 8px;
    font-size: 1.1em;
  }

  .result-message {
    font-size: 1.6em;
    padding: 15px;
    margin-top: 20px;
    border-radius: 10px;
  }

  .dealer-section,
  .player-section {
    margin-bottom: 30px;
  }

  .dealer-info,
  .player-info {
    margin-bottom: 15px;
  }

  .score {
    font-size: 1.6em;
  }

  .money {
    font-size: 1.6em;
  }

  footer {
    max-width: 900px;
    font-size: 1em;
    padding: 15px;
  }
}