:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --accent: #2563eb;
  --border: #d0d0d0;
  --warn-bg: #fff7e6;
  --warn-border: #f0b429;
}

* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--fg);
  background: var(--bg);
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
  line-height: 1.6;
}

header h1 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

header p {
  color: #555;
  margin-top: 0;
}

#plan-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  align-items: end;
  margin: 1.5rem 0;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.field label {
  font-size: 0.85rem;
  font-weight: 600;
}

.field input,
.field select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
}

button {
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#status-message {
  min-height: 1.2rem;
  font-weight: 600;
}

.warnings {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.warnings ul {
  margin: 0;
  padding-left: 1.2rem;
}

#map {
  width: 100%;
  height: 360px;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

.day-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.day-card h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

.category {
  margin-bottom: 0.75rem;
}

.category h3 {
  font-size: 0.9rem;
  color: #555;
  margin: 0 0 0.25rem;
}

.category ul {
  margin: 0;
  padding-left: 1.2rem;
}

.attribution {
  font-size: 0.75rem;
  color: #888;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #eaeaea;
    --bg: #121212;
    --border: #3a3a3a;
    --warn-bg: #2a2210;
    --warn-border: #a97a12;
  }
}