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

html, body {
  height: 100%;
  width: 100%;
}

/* MAIN BACKGROUND */
#main {
  font-family: Arial, sans-serif;
  background-color: #046574d7; 
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  width: 100%;
}

/* PANEL */
#panel {
  height: 80%;
  width: 80%;
  background-color: #fdfdfd;
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0px 6px 20px rgba(0,0,0,0.07);
}

/* TOP BAR */
#ptop {
  padding: 0 20px;
  width: 100%;
  height: 80px;
  background: #3a635f; 
  display: flex;
  align-items: center;
  justify-content: space-around;
}

.elem h3 {
  color: #ffffff;
  margin-bottom: 5px;
  font-weight: 600;
}

/* SCORE & TIMER */
#scoreBox, #timerBox, #skipBox {
  font-weight: 600;
  background-color: #ffffff; 
  color: #37474f;
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 18px;
  min-width: 40px;
  text-align: center;
  box-shadow: 0px 2px 6px rgba(0,0,0,0.05);
}

/* MAIN GAME AREA */
#pbtm {
  width: 100%;
  height: calc(100% - 80px);
  background:  radial-gradient(#aacfd0, #26afbe); 
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  flex-direction: column;
}

/* GAME AREA */
#gameArea {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: none;
  border-radius: 10px;
}

/* START BUTTON */
#start {
  font-size: 2rem;
  background: #3a635f;
  border-radius: 10px;
  padding: 15px 30px;
  border: none;
  cursor: pointer;
  transition: 0.3s;
  margin-bottom: 20px;
  color: #ffffff;
  font-weight: bold;
  box-shadow: 0 5px 14px rgba(0,0,0,0.1);
}

#start:hover {
  background: #274240dc;
  transform: scale(1.05);
}

/* BUBBLES */
.bubbles {
  position: absolute;
  width: 55px;
  height: 55px;
  border-radius: 50%;
  background: radial-gradient(circle at top left, #d7f0f3, #aacfd0);
  color: #0d1216;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: bold;
  bottom: 0;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  animation: rise 5s linear forwards;
}

@keyframes rise {
  from { bottom: 0; opacity: 1; }
  to { bottom: 100%; opacity: 0.9; }
}

/* GAME OVER SCREEN */
.game-over, .exit-screen {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100%;
  color: #2f3c48;
  background: linear-gradient(135deg, #cfdde2, #b7cdd5); 
  border-radius: 15px;
  padding: 30px;
  animation: fadeIn 1s ease-in-out;
}

.game-over h2, .exit-screen h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: #2b3943;
}

.game-over p, .exit-screen p {
  font-size: 1.3rem;
  margin: 10px 0;
  color: #3d4b55;
}

.game-over span {
  font-weight: bold;
  color: #42545e;
}

/* GAME OVER BUTTON */
.game-over button, .exit-screen button {
  margin-top: 20px;
  padding: 12px 24px;
  border: none;
  background: #3a635f;
  color: #ffffff;
  font-size: 1rem;
  border-radius: 10px;
  cursor: pointer;
  transition: 0.3s;
  box-shadow: 2px 4px 8px rgba(0,0,0,0.15);
}

.game-over button:hover, .exit-screen button:hover {
  background: #274240dc;
  transform: scale(1.05);
}

/* FADE ANIMATION */
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}