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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f4f4;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

.container {
  background-color: #fff;
  box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.3);
  padding: 30px;
  text-align: center;
  width: 90%;
  max-width: 100%; /* Adjust this line to prevent container overflow */
  margin: 0; /* Add this to remove margin */
}

h1 {
  font-size: 36px;
  margin-bottom: 20px;
  color: #333;
}

.timer {
  font-size: 64px;
  margin-bottom: 30px;
  color: #333;
}

#timer {
  font-size: 128px;
  animation: pop 1s ease infinite;
}

@keyframes pop {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
  100% {
    transform: scale(1);
  }
}

.controls button:first-child {
  font-size: 18px;
  padding: 10px 20px;
  margin: 0 10px;
  cursor: pointer;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 5px;
  transition: background-color 0.2s;
  background: linear-gradient(to bottom, #007bff, #0056b3);
}

.controls button:focus:first-child,
.controls button:focus:last-child {
  outline: none;
}

.controls button:hover:first-child {
  background-color: #0056b3;
  background: linear-gradient(to bottom, #0056b3, #003c80);
}

.controls button:last-child {
  font-size: 18px;
  padding: 10px 20px;
  margin: 0 10px;
  cursor: pointer;
  background-color: #dc3545;
  color: #fff;
  border: none;
  border-radius: 5px;
  transition: background-color 0.2s;
  background: linear-gradient(to bottom, #dc3545, #b02a37);
}

.controls button:hover:last-child {
  background-color: #b02a37;
  background: linear-gradient(to bottom, #b02a37, #8c1d28);
}

.input-fields {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.input-fields label {
  font-size: 20px;
  margin-right: 10px;
  color: #333;
}

.input-fields input[type="number"] {
  font-size: 18px;
  padding: 5px;
  width: 60px;
  text-align: center;
  border: 1px solid #ccc;
  border-radius: 5px;
}

.feature-description {
  font-size: 18px;
  margin-top: 20px;
  color: #555;
}

.features {
  margin-top: 30px;
  text-align: left;
}

.features h2 {
  font-size: 24px;
  color: #333;
  margin-bottom: 10px;
}

.features ul {
  list-style-type: disc;
  margin-left: 20px;
  font-size: 18px;
  color: #555;
}

/* Add CSS styles for the explanation */
.explanation {
  font-size: 18px;
  margin-top: 20px;
  color: #555;
  text-align: center;
}

/* Style for the dark mode switch */
.dark-mode-switch {
  display: flex;
  position: relative;
  width: 60px; /* Adjust the width as needed */
  height: 30px; /* Adjust the height as needed */
}

/* Hide the default checkbox input */
.checkbox {
  display: none;
}

/* Style for the switch label (button-like appearance) */
.label {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 15px; /* Adjust the border radius for rounded corners */
  cursor: pointer;
  transition: background-color 0.3s; /* Smooth transition effect */
  background: linear-gradient(to bottom, #888888, #000000);
}

/* Style for the label when the checkbox is checked (dark mode is on) */
.checkbox:checked + .label {
  background-color: #444; /* Background color when dark mode is on */
}

/* Optional: Add a transition for a smooth appearance change */
.checkbox + .label::before {
  content: "";
  position: absolute;
  width: 30px; /* Adjust the width as needed */
  height: 30px; /* Adjust the height as needed */
  background-color: #fff; /* Color of the "knob" or button */
  border-radius: 50%; /* Make it round */
  left: 3px; /* Adjust the initial position */
  transition: transform 0.3s; /* Smooth transition effect */
}

/* Move the knob/button to the right when the checkbox is checked */
.checkbox:checked + .label::before {
  transform: translateX(30px); /* Adjust the distance to move the knob */
}

.footer {
  background-color: rgba(0, 0, 0, 0.7);
  padding: 15px;
  color: #fff;
  text-align: center;
  width: 100%;
}

/* Add a media query for screens with a maximum width of 600px (adjust as needed) */
@media (max-width: 768px) {
  .container {
    max-width: 90%; /* Adjust the container width for smaller screens */
  }

  .timer {
    font-size: 40px; /* Reduce the timer font size for smaller screens */
    margin-top: 30px;
  }

  .controls button {
    font-size: 16px; /* Reduce button font size for smaller screens */
  }

  .input-fields label {
    font-size: 16px; /* Reduce label font size for smaller screens */
  }

  .input-fields input[type="number"] {
    font-size: 14px; /* Reduce input font size for smaller screens */
  }

  .feature-description {
    font-size: 16px; /* Reduce feature description font size for smaller screens */
  }

  .features h2 {
    font-size: 20px; /* Adjust heading font size for smaller screens */
  }

  .features ul {
    font-size: 16px; /* Reduce list font size for smaller screens */
  }

  .explanation {
    font-size: 16px; /* Reduce explanation font size for smaller screens */
  }
}

@media (max-width: 480px) {
  #timer {
    font-size: 90px;
  }

  .explanation {
    font-size: 14px;
  }
}