* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f0f4f8;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans KR', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  padding: 32px 24px 28px;
  text-align: center;
}

.header-inner h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header-inner .icon { margin-right: 8px; }

.subtitle {
  font-size: 14px;
  opacity: 0.85;
  margin-top: 6px;
}

main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 16px;
}

/* 검색 */
.search-section { margin-bottom: 24px; }

.search-box {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.search-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.search-row + .search-row { margin-top: 12px; }

.search-box select,
.search-box input {
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
  flex: 1;
  min-width: 120px;
}

.search-box select:focus,
.search-box input:focus { border-color: var(--primary); }

.search-box select:disabled {
  background: #f1f5f9;
  cursor: not-allowed;
}

.keyword-search {
  display: flex;
  gap: 10px;
  flex: 2;
  min-width: 280px;
}

.keyword-search input { flex: 1; }

button {
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

#searchBtn, #keywordSearchBtn {
  background: var(--primary);
  color: #fff;
}

#searchBtn:hover:not(:disabled),
#keywordSearchBtn:hover { background: var(--primary-dark); }

#searchBtn:disabled {
  background: #94a3b8;
  cursor: not-allowed;
}

/* 로딩 */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px;
  font-size: 16px;
  color: var(--text-secondary);
}

.loading.hidden { display: none; }

.spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* 결과 카드 */
.result-section, .stats-section { margin-bottom: 24px; }
.result-section.hidden, .stats-section.hidden { display: none; }

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 6px;
}

.map-card { grid-column: 1 / 2; grid-row: 1 / 3; }
.chart-card { grid-column: 2 / 3; }
.table-card { grid-column: 1 / 3; }
.info-card { grid-column: 2 / 3; }

.map-container {
  width: 100%;
  height: 400px;
}

.chart-wrapper {
  padding: 16px;
  height: 280px;
}

.chart-controls {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.chart-controls select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
}

.chart-controls label {
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.table-wrapper {
  overflow-x: auto;
  max-height: 400px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th {
  background: #f8fafc;
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1;
}

td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

tr:hover td { background: #f1f5f9; }

/* 주변 정보 */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 16px;
}

.info-item {
  background: #f8fafc;
  border-radius: 8px;
  padding: 14px;
}

.info-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.info-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

/* 통계 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
}

.stat-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

footer {
  text-align: center;
  padding: 24px;
  color: var(--text-secondary);
  font-size: 13px;
}

/* 반응형 */
@media (max-width: 900px) {
  .result-grid {
    grid-template-columns: 1fr;
  }
  .map-card { grid-column: 1; grid-row: auto; }
  .chart-card { grid-column: 1; }
  .table-card { grid-column: 1; }
  .info-card { grid-column: 1; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .search-row { flex-direction: column; }
  .search-row select, .keyword-search { width: 100%; }
}

@media (max-width: 480px) {
  .header-inner h1 { font-size: 22px; }
  .stats-grid { grid-template-columns: 1fr; }
}