:root {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0b0b0c;
  color: #f2f2f2;
  padding: 2rem 1rem;
}

main {
  text-align: center;
  max-width: 900px;
  width: 100%;
}

h1 {
  font-size: 3rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.subheader {
  font-size: 1rem;
  color: #a3a3a3;
  margin: 0 0 1.5rem;
}

.cities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.city-card {
  background: #17171a;
  border: 1px solid #2a2a2e;
  border-radius: 12px;
  padding: 1.5rem 1rem;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.city-card:hover {
  border-color: #4da3ff;
  transform: translateY(-2px);
}

.city-card.selected {
  border-color: #4da3ff;
  box-shadow: 0 0 0 1px #4da3ff;
}

.city-card h2 {
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
  color: #f2f2f2;
}

.local-time {
  font-size: 0.85rem;
  color: #6e6e73;
  margin: 0 0 0.75rem;
}

.temp {
  font-size: 2.25rem;
  font-weight: 600;
  color: #f2f2f2;
  margin: 0 0 0.25rem;
}

.high-low {
  font-size: 0.85rem;
  color: #a3a3a3;
  margin: 0 0 0.5rem;
}

.desc,
.wind {
  font-size: 0.95rem;
  color: #a3a3a3;
  margin: 0;
}

.emoji {
  font-size: 1.75rem;
  margin: 0.75rem 0 0;
}

.chart-section {
  display: none;
  margin-top: 2rem;
  padding: 1.5rem;
  background: #17171a;
  border: 1px solid #2a2a2e;
  border-radius: 12px;
  text-align: left;
}

.chart-section.open {
  display: block;
}

.chart-section h3 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: #a3a3a3;
  text-decoration: none;
  font-size: 0.9rem;
}

.back-link:hover {
  color: #4da3ff;
}

.home {
  max-width: 480px;
}

.tagline {
  font-size: 1.05rem;
  color: #a3a3a3;
  margin: 0 0 2.5rem;
}

.feature-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #17171a;
  border: 1px solid #2a2a2e;
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  color: inherit;
  text-align: left;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.feature-card + .feature-card {
  margin-top: 1rem;
}

.feature-card:hover {
  border-color: #4da3ff;
  transform: translateY(-2px);
}

.feature-card-disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.feature-card-disabled:hover {
  border-color: #2a2a2e;
  transform: none;
}

.feature-badge {
  font-size: 0.72rem;
  color: #6e6e73;
  background: #0b0b0c;
  border: 1px solid #2a2a2e;
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.feature-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.feature-text {
  flex: 1;
}

.feature-text h2 {
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
  color: #f2f2f2;
}

.feature-text p {
  font-size: 0.9rem;
  color: #a3a3a3;
  margin: 0;
}

.feature-arrow {
  font-size: 1.25rem;
  color: #6e6e73;
  flex-shrink: 0;
}