:root {
  --bg: #f4f7ff;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(180deg, #eef2ff 0%, #ffffff 100%);
  color: var(--text);
}

.app-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
}

header {
  text-align: center;
  margin-bottom: 24px;
}

header h1 {
  margin: 0;
  font-size: 2rem;
}

header p {
  margin: 8px auto 0;
  color: var(--muted);
}

.search-panel {
  background: var(--surface);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 25px 45px rgba(15, 23, 42, 0.08);
  margin-bottom: 20px;
}

.search-panel label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
}

.search-group {
  display: flex;
  gap: 10px;
}

input[type="text"] {
  flex: 1;
  padding: 14px 16px;
  border: 1px solid #d1d5db;
  border-radius: 14px;
  font-size: 1rem;
}

button {
  border: none;
  border-radius: 14px;
  padding: 14px 18px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

.secondary-button {
  background: #f3f4f6;
  color: var(--text);
}

.secondary-button:hover {
  background: #e5e7eb;
}

.hint {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

.weather-card {
  background: var(--surface);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
  margin-bottom: 24px;
}

.hidden {
  display: none;
}

.weather-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.weather-summary h2 {
  margin: 0;
  font-size: 1.7rem;
}

.weather-summary p {
  margin: 8px 0 0;
  color: var(--muted);
}

.temperature {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  font-size: 3rem;
  font-weight: 700;
}

.details-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.details-grid strong {
  display: block;
  margin-bottom: 8px;
}

.details-grid p {
  margin: 0;
  color: var(--muted);
}

.recommendation {
  margin-top: 28px;
}

.recommendation h3 {
  margin: 0 0 14px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: #eef2ff;
  color: #1d4ed8;
  font-weight: 600;
  font-size: 0.95rem;
}

.tips-panel {
  background: rgba(37, 99, 235, 0.06);
  border-radius: 18px;
  padding: 18px 22px;
}

.tips-panel h3 {
  margin-top: 0;
}

.tips-panel ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

@media (max-width: 640px) {
  .weather-summary {
    flex-direction: column;
    align-items: flex-start;
  }

  .details-grid {
    grid-template-columns: 1fr;
  }
}