* {
  box-sizing: border-box;
}

body {
  background: #fefae0;
  font-family: 'Courier New', monospace;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.container {
  background-color: #fff8e1;
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
  max-width: 500px;
  width: 100%;
  text-align: center;
}

.title {
  font-size: 20px;
  margin-bottom: 20px;
  color: #6b584c;
}

.timer-display {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 64px;
  font-weight: bold;
  letter-spacing: 2px;
  color: #212121;
}

.timer-display span {
  line-height: 1;
  display: inline-block;
  vertical-align: middle;
}

.colon {
  font-size: 64px;
  padding: 0 6px;
}

.session-label {
  font-size: 16px;
  margin-bottom: 16px;
  color: #6c584c;
}

.duration-input {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.input-group {
  flex: 1 1 45%;
  background: #fff;
  padding: 10px;
  border-radius: 10px;
  border: 2px solid #e6ccb2;
}

.input-group h3 {
  font-size: 14px;
  margin-bottom: 6px;
}

.row {
  display: flex;
  gap: 6px;
  justify-content: center;
}

.row input {
  width: 48%;
  padding: 6px;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid #ccc;
  text-align: center;
}

.button-controls {
  margin-top: 20px;
}

.button-controls button {
  background: #6a994e;
  color: white;
  border: none;
  padding: 10px 16px;
  font-size: 14px;
  border-radius: 8px;
  margin: 0 4px;
  cursor: pointer;
  transition: background 0.2s;
}

.button-controls #pause {
  background: #e9c46a;
  color: #333;
}

.button-controls #reset {
  background: #bc4749;
}

.button-controls button:hover {
  filter: brightness(1.1);
}

.custom-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fffdf5;
  border: 2px solid #d4a373;
  padding: 20px 30px;
  z-index: 9999;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  text-align: center;
}

.popup-content p {
  font-size: 16px;
  color: #333;
}

.popup-buttons {
  margin-top: 15px;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.popup-buttons button {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
  transition: background 0.2s;
}

#popup-ok {
  background: #6a994e;
  color: white;
}

#popup-cancel {
  background: #bc4749;
  color: white;
}