body {
  font-family: system-ui, sans-serif;
  max-width: 600px;
  margin: auto;
  padding: 20px;
}

h1 {
  text-align: center;
}

label {
  font-weight: 600;
}

input {
  width: 100%;
  margin: 6px 0 14px;
  padding: 10px;
  font-size: 16px;
}

button {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  background: #0f766e;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background: #115e59;
}

.hidden {
  display: none;
}

#map {
  height: 320px;
  margin-top: 20px;
  border-radius: 8px;
}

#result {
  margin-top: 20px;
}

.route-card {
  background: #f8fafc;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 10px;
}

.route-card.best {
  border-left: 6px solid #16a34a;
}

.route-card.alt {
  border-left: 6px solid #dc2626;
}

.route-card.alt2 {
  border-left: 6px solid #2563eb;
}

.subtitle {
  text-align: center;
  color: #334155;
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.hint {
  text-align: center;
  font-size: 0.85rem;
  color: #64748b;
  margin-bottom: 20px;
}

footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #e5e7eb;
  text-align: center;
  font-size: 0.8rem;
  color: #64748b;
}