* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f7fb;
  color: #1f2937;
}

.container {
  max-width: 1100px;
  margin: 40px auto;
  background: #ffffff;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

h1 {
  margin-top: 0;
  margin-bottom: 8px;
}

.subtitle {
  margin-top: 0;
  color: #6b7280;
}

.search-box {
  display: flex;
  gap: 12px;
  margin: 24px 0 16px;
}

#unitInput {
  flex: 1;
  padding: 14px;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  font-size: 16px;
}

#searchBtn,
.quick-btn {
  padding: 14px 18px;
  border: none;
  border-radius: 10px;
  background: #2563eb;
  color: white;
  cursor: pointer;
  font-size: 15px;
}

#searchBtn:hover,
.quick-btn:hover {
  background: #1d4ed8;
}

.quick-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.status {
  margin-bottom: 18px;
  font-weight: 600;
}

.results {
  display: grid;
  gap: 14px;
}

.card {
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 16px;
  background: #fafafa;
}

.card h3 {
  margin: 0 0 10px 0;
  font-size: 18px;
}

.row {
  margin: 6px 0;
}

.label {
  font-weight: 700;
}

.empty {
  padding: 18px;
  border-radius: 12px;
  background: #fff7ed;
  border: 1px solid #fdba74;
  color: #9a3412;
}

@media (max-width: 768px) {
  .search-box {
    flex-direction: column;
  }

  .quick-buttons {
    flex-direction: column;
  }
}