* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  height: 100vh;
  background: linear-gradient(to top, #90e0ef, #caf0f8);
  overflow: hidden;
  position: relative;
  color: #023047;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Welcome Screen Container */
.welcome-screen {
  text-align: center;
  background: rgba(255, 255, 255, 0.2);
  padding: 2rem;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  z-index: 1;
}

/* Welcome Text */
h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.welcome-screen p {
  font-size: 1rem;
  margin-bottom: 2rem;
}

/* Start Button */
.welcome-screen button {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  background-color: #00b4d8;
  color: #ffffff;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.welcome-screen button:hover {
  background-color: #0077b6;
}

/* Bubbles background */
.bubbles {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.bubble  {
  position: absolute;
  display: block;
  width: 20px;
  height: 20px;
  background: rgb(20, 179, 207);
  bottom: -40px;
  border-radius: 50%;
  animation: bubbleUp 10s infinite ease-in;
}


@keyframes bubbleUp {
  0% {
    transform: translateY(0) scale(1);
    opacity: 0.7;
  }
  100% {
    transform: translateY(-100vh) scale(0.5);
    opacity: 0;
  }
}

/* Responsive tweaks */
@media (max-width: 768px) {
  .welcome-screen {
    padding: 1.5rem;
  }

  .welcome-screen header {
    font-size: 1.5rem;
  }

  .welcome-screen p {
    font-size: 0.9rem;
  }

  .welcome-screen button {
    font-size: 0.9rem;
    padding: 0.5rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .circle-container {
    width: 120px;
    height: 120px;
  }

  .icon-text img {
    width: 60px;
    height: 60px;
  }
}

.dashboard {
  text-align: center;
  background: rgba(255, 255, 255, 0.2);
  padding: 2rem;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  z-index: 1;
  max-width: 500px;
  margin: 2rem auto;
  position: relative;
}
.tracker {
  margin-top: 1rem;
}

.circle-container {
  width: 150px;
  height: 150px;
  margin: 0 auto 1rem auto;
  background: white;
  border-radius: 50%;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1), 0 0 15px rgba(0, 150, 200, 0.2);
  position: relative;
  overflow: hidden;
  margin-bottom: 2rem;
}
.circle-fill{
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 0%;
  background: linear-gradient(to top, #48cae4, #0096c7);
  border-radius: 50%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  transition: height 0.4s ease-in-out; 
}
.circle-text{
  position: absolute;
  z-index: 2;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  text-align: center;
  font-size: 0.95rem;
  color: black;
}
#circlePercent{
  font-size: 1.2rem;
  margin-bottom: 4px;
}
.tracker button {
  padding: 0.6rem 1.6rem;
  font-size: 1.5rem;
  background-color: #00b4d8;
  color: #fff;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.tracker button:hover {
  background-color: #0077b6;
}
.settings {
  text-align: center;
  background: rgba(255, 255, 255, 0.2);
  padding: 2rem;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  z-index: 1;
  max-width: 500px;
  margin: 2rem auto;
  position: relative;
}

.settings h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #0077b6;
}

.settings label {
  font-size: 1rem;
  color: #023047;
  display: block; 
  margin-bottom: 0.3rem;
}

.settings input {
  padding: 0.5rem;
  border-radius: 10px;
  border: 1px solid #90e0ef;
  margin: 0 auto 1rem auto; 
  display: block; 
  width: 200px;
  text-align: center; 
}


.settings button {
  margin: 0.5rem;
  padding: 0.5rem 1.5rem;
  background: #00b4d8;
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  transition: 0.3s ease;
  margin-bottom: 2rem;
}

.settings button:hover {
  background: #0077b6;
}
.nav {
  position: fixed;
  bottom: 10px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 10px;
  z-index: 10;
}

.nav button {
  padding: 0.5rem 1.2rem;
  background-color: #58d0e8;
  border: none;
  border-radius: 30px;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  transition: background-color 0.3s;

}

.nav button:hover {
  background-color: #0077b6;
}
.history {
  text-align: center;
  background: rgba(255, 255, 255, 0.2);
  padding: 2rem;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  z-index: 1;
  max-width: 500px;
  margin: 2rem auto;
  position: relative;
}

.history h2 {
  font-size: 1.4rem;
  color: #0077b6;
  margin-bottom: 1rem;
}

#historyList {
  list-style: none;
  padding: 0;
  margin-bottom: 1.5rem;
}

#historyList li {
  background: rgba(255, 255, 255, 0.3);
  margin: 0.5rem auto;
  padding: 0.5rem;
  width: 70%;
  border-radius: 15px;
  color: #023047;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

.history button {
  padding: 0.5rem 1.2rem;
  background: #00b4d8;
  border: none;
  color: white;
  border-radius: 20px;
  cursor: pointer;
}

.history button:hover {
  background: #0077b6;
}

.icon-text img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  vertical-align: middle;
  margin-right: 8px;
  border-radius: 40px;
}