@import url("https://fonts.googleapis.com/css2?family=Roboto+Mono&display=swap");

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

body,
html {
  height: 100%;
  font-family: "Roboto Mono", monospace;
  background: linear-gradient(135deg, #1e1e1e, #121212);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  color: #eee;
}

.container {
  max-width: 900px;
  text-align: center;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: #e0e0e0;
  text-shadow: 0 0 5px #3b82f6;
}

.stopwatch-card {
  width: 100%;
  background: linear-gradient(145deg, #e0f0ff, #c7ddff);
  padding: 40px 30px;
  border-radius: 16px;
}

.timer-display {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 10px;
  padding: 30px 40px;
  background-color: #111;
  border-radius: 12px;
  margin-bottom: 30px;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
  flex-wrap: wrap;
}

.time-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 100px;
}

.time-section span {
  font-size: 2.5rem;
  font-weight: 700;
  color: #60a5fa;
  min-width: 60px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.time-section label {
  font-size: 0.75rem;
  color: #aaa;
  margin-top: 5px;
  text-transform: uppercase;
}

.separator {
  font-size: 2rem;
  color: #fff;
  margin: 0 5px;
}

.button-group {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  padding: 10px 25px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 100px;
}

.start-btn {
  background: #111;
  color: #60a5fa;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
}

.start-btn:hover {
  background: #222;
}

.pause-btn,
.reset-btn {
  background: #d6e4ff;
  color: #3b53a7;
  box-shadow: 0 4px 10px rgba(59, 82, 167, 0.3);
}

.pause-btn:hover,
.reset-btn:hover {
  background: #aac3ff;
}

/* Responsive adjustments */
@media (max-width: 500px) {
  .time-section span {
    font-size: 2rem;
    min-width: 45px;
  }

  .separator {
    font-size: 1.5rem;
  }

  .btn {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .button-group {
    gap: 10px;
    flex-direction: column;
  }

  .stopwatch-card {
    padding: 30px 20px;
  }
  #milli {
    margin-right: 34px;
  }
}