/*
 * Basic styling for the UNO Online front‑end. Styles aim to keep
 * everything reasonably readable without getting in the way of the
 * gameplay logic. Colours for the cards correspond to the real UNO
 * colours; wild cards are rendered black with a rainbow bar.
 */

body {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f5f5f5;
  color: #333;
}

/* Lobby styles */
#lobby {
  max-width: 400px;
  margin: 80px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
}

/* Authentication styles */
#auth {
  max-width: 400px;
  margin: 80px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
}

#auth input {
  width: 90%;
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 16px;
}

#auth button {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin: 0 5px;
}

#auth button:hover {
  background-color: #0069d9;
}

#lobby input {
  width: 90%;
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 16px;
}

#lobby button {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #28a745;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

#lobby button:hover {
  background-color: #218838;
}

#lobbyMessage {
  margin-top: 10px;
  color: #c00;
}

/* General hidden class */
.hidden {
  display: none;
}

/* Game area styles */
#gameArea {
  padding: 20px;
  max-width: 960px;
  margin: 0 auto;
}

#infoBar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

#infoBar button {
  padding: 8px 14px;
  font-size: 14px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

#infoBar #startBtn {
  background-color: #007bff;
  color: #fff;
}

#infoBar #drawBtn {
  background-color: #ffc107;
  color: #212529;
}

#infoBar #unoBtn {
  background-color: #dc3545;
  color: #fff;
}

/* Logout button: gray colour to differentiate from action buttons */
#infoBar #logoutBtn {
  background-color: #6c757d;
  color: #fff;
}

#players {
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.player {
  padding: 6px 10px;
  border-radius: 4px;
  background-color: #e9ecef;
}

.player.current {
  font-weight: bold;
  background-color: #fff3cd;
  border: 1px solid #ffeeba;
}

#topCardArea {
  margin-bottom: 20px;
}

#topCard {
  min-width: 60px;
  height: 90px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 24px;
  color: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Hand area */
#hand {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 120px;
}

.card {
  width: 60px;
  height: 90px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 22px;
  color: #fff;
  cursor: pointer;
  user-select: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  /* Smooth transforms to support hover animations */
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  /* Animate cards appearing on screen with a slight drop */
  animation: drop 0.35s ease;
}

/* Hover effect for playable cards: lift the card to provide feedback */
.card.playable:hover {
  transform: translateY(-6px) scale(1.05);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* Drop animation: cards gently drop and fade into place when added */
@keyframes drop {
  from {
    transform: translateY(-20px) scale(0.8);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

/* Scoreboard styles */
#scoreboardArea {
  margin-bottom: 20px;
  background-color: #fff;
  padding: 12px;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}
#scoreboardArea h2 {
  margin-top: 0;
  margin-bottom: 8px;
}
#scoreboard {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.scoreRow {
  padding: 4px 0;
  border-bottom: 1px solid #f1f1f1;
  font-size: 14px;
}
.scoreRow:last-child {
  border-bottom: none;
}

/* Colour specific classes */
.red {
  background-color: #d9534f;
}

.yellow {
  background-color: #f0ad4e;
  color: #212529;
}

.green {
  background-color: #5cb85c;
}

.blue {
  background-color: #5bc0de;
}

.wild {
  background: linear-gradient(135deg, red 25%, yellow 25%, yellow 50%, green 50%, green 75%, blue 75%);
  color: #fff;
  font-size: 18px;
}

/* Messages area */
#messages {
  margin-top: 20px;
  min-height: 20px;
  color: #dc3545;
}

/* Chat area styles */
#chatArea {
  margin-top: 20px;
  max-width: 960px;
}

#chatMessages {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid #ccc;
  padding: 8px;
  background-color: #f8f9fa;
  margin-bottom: 4px;
}

#chatMessages .chatMessage {
  margin-bottom: 4px;
}

#chatInput {
  flex: 1;
  padding: 6px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 14px;
}

#chatSendBtn {
  padding: 6px 12px;
  font-size: 14px;
  background-color: #17a2b8;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

#chatSendBtn:hover {
  background-color: #138496;
}

/* Colour selector for wild cards */
#colorSelector {
  margin-top: 20px;
  padding: 10px;
  border: 1px solid #ccc;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  max-width: 400px;
}

#colorSelector p {
  margin: 0 0 8px 0;
  font-weight: bold;
}

.colour-btn {
  padding: 6px 12px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  color: #fff;
  font-size: 14px;
}

.colour-btn.red {
  background-color: #d9534f;
}
.colour-btn.yellow {
  background-color: #f0ad4e;
  color: #212529;
}
.colour-btn.green {
  background-color: #5cb85c;
}
.colour-btn.blue {
  background-color: #5bc0de;
}