* { box-sizing: border-box; }

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(to bottom, #87CEEB, #E0F6FF);
  background-attachment: fixed;
  padding: 1rem;
}

h1 { text-align: center; margin-bottom: 1rem; }

.controls {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 1rem;
}

select, button {
  padding: 0.6rem 1rem;
  border-radius: 10px;
  border: none;
}

button {
  background: #4A90E2;
  color: white;
  cursor: pointer;
}

.timezone-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.timezone {
  background: rgba(255,255,255,0.9);
  padding: 1rem;
  border-radius: 16px;
  min-width: 250px;
  text-align: center;
  position: relative;
}

.label { font-weight: bold; margin-bottom: 6px; }

.time {
  font-family: monospace;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-variant-numeric: tabular-nums;
}

.remove-button {
  position: absolute;
  top: 6px;
  right: 6px;
  background: #FF5C5C;
  color: white;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  padding: 2px 8px;
}

#error-message {
  color: #d9534f;
  font-size: 0.85rem;
  text-align: center;
  margin-bottom: 0.5rem;
  min-height: 1.2rem;
}