:root {
  --primary-color: #00b894;
  --bg-color: #121212;
  --text-color: #ffffff;
  --button-bg: rgba(255, 255, 255, 0.1);
  --button-hover: rgba(255, 255, 255, 0.2);
  --button-active: var(--primary-color);
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Courier New', monospace;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  user-select: none;
  overflow: hidden;
  transition: background-color 0.3s ease
}

.container {
  width: 100%;
  max-width:  600px;;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  text-align: center;
}

.display-container {
  position: relative;
  margin-bottom: 40px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#display {
  font-size: 5rem;
  font-weight: bold;
  letter-spacing: 2px;
  text-shadow: 0 0 10px rgba(0, 184, 148, 0.5);
  transition: font-size 0.3s ease;
  text-align: center;
  width: 100%;
  max-width: 100%;
  display: block;
  margin: 0;
  padding: 0;
}

@media (min-width: 768px) {
  #display {
    font-size: 8rem
  }
}

.status-indicator {
  position: relative;
  font-size: 1rem;
  margin-top: 5px;
  opacity: 0.7;
  text-align: center;
  width: 100%;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 15px;
  width: 100%;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

@media (min-width: 768px) {
  .button-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

button {
  background-color: var(--button-bg);
  color: var(--text-color);
  border: 2px solid var(--text-color);
  border-radius: 20px;
  padding: 15px 10px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  height: 60px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

button:hover {
  background-color: var(--button-hover);
  transform: translateY(-2px);
}

button:active {
  transform: scale(0.95);
}

button.active {
  background-color: var(--primary-color);
  color: var(--bg-color);
  border-color: var(--primary-color);
}

button i {
  font-size: 1.2rem;
}

#showBtn {
  margin-top: 10px;
  display: none;
}

.laps-container {
  width: 100%;
  max-height: 200px;
  overflow-y: auto;
  margin-top: 20px;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.05);
  padding: 10px;
  transition: all 0.3s ease;
}

.laps-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  font-weight: bold;
}

.lap-item {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.lap-item:last-child {
  border-bottom: none;
}

.lap-item span {
  text-align: center;
}

.lap-item:nth-child(even) {
  background-color: rgba(255, 255, 255, 0.05);
}

.shortcuts {
  margin-top: 20px;
  font-size: 0.8rem;
  text-align: center;
  opacity: 0.7;
}

.hidden {
  display: none !important;
}

    /* For mobile */
@media (max-width: 480px) {
  .button-grid {
    grid-template-columns: repeat(2, 1fr);
  }
      
  #display {
    font-size: 3rem;
  }
      
  button {
    padding: 10px;
    height: 50px;
    font-size: 0.9rem;
  }
}

    /* Custom scrollbar */
.laps-container::-webkit-scrollbar {
  width: 8px;
}

.laps-container::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

.laps-container::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 10px;
}

    /* Theme toggle */
.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--text-color);
  font-size: 1.5rem;
  cursor: pointer;
}

    /* Dark theme */
body.light-theme {
  --bg-color: #f5f5f5;
  --text-color: #121212;
  --button-bg: rgba(0, 0, 0, 0.1);
  --button-hover: rgba(0, 0, 0, 0.2);
}