html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

#map {
  position: absolute;
  inset: 0;
}

/* ── Title ──────────────────────────────────────────────────────────────────── */
h1 {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  padding: 10px 16px;
  margin: 0;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  font-family: "Times New Roman", serif;
  font-size: 20px;
  color: #444;
}

/* ── Controls panel ─────────────────────────────────────────────────────────── */
#controls {
  position: absolute;
  top: 80px;
  left: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 192px;
}

/* shared button base */
#controls button,
#controls select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid rgba(60, 60, 60, 0.15);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  color: #2f3a3f;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(4px);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
  box-sizing: border-box;
}

#controls button:hover {
  background: rgba(255, 255, 255, 1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.14);
  transform: translateY(-1px);
}

#controls button:active {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

/* underserved toggle active state */
#underservedToggle.active {
  background: #e74c3c;
  color: #fff;
  border-color: #c0392b;
}

#underservedToggle.active:hover {
  background: #c0392b;
}

/* select */
#controls select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
  cursor: pointer;
}

.control-label {
  font-size: 11px;
  font-weight: 600;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 2px 0;
}

/* city buttons row */
#cityButtons {
  display: flex;
  gap: 6px;
}

.city-btn {
  flex: 1;
  padding: 8px 4px !important;
  text-align: center !important;
  font-size: 12px !important;
}

/* ── Legend ─────────────────────────────────────────────────────────────────── */
#legend {
  position: absolute;
  bottom: 36px;
  left: 20px;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(0,0,0,0.1);
  font-size: 12px;
  color: #333;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  min-width: 192px;
  max-width: 220px;
  box-sizing: border-box;
}

.legend-title {
  font-weight: 700;
  font-size: 12px;
  margin-bottom: 8px;
  color: #333;
}

/* continuous gradient legend */
.legend-gradient {
  height: 12px;
  border-radius: 4px;
  width: 100%;
  margin-bottom: 4px;
}

.legend-gradient-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #666;
}

/* categorical legend */
.legend-item {
  display: flex;
  align-items: center;
  margin: 4px 0;
  gap: 8px;
}

.legend-swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
  border: 1px solid rgba(0,0,0,0.1);
}

.legend-label {
  font-size: 11px;
  color: #444;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.15);
}

.legend-divider {
  border: none;
  border-top: 1px solid #eee;
  margin: 8px 0;
}

/* ── Info panel ─────────────────────────────────────────────────────────────── */
#info-panel {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 1000;
  width: 280px;
  max-height: calc(100vh - 60px);
  overflow-y: auto;
  background: rgba(255, 255, 255, 0.97);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  padding: 16px;
  box-sizing: border-box;
}

#info-panel.hidden {
  display: none;
}

#panel-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  font-size: 16px;
  color: #999;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}

#panel-close:hover {
  background: #f0f0f0;
  color: #333;
}

.panel-title {
  font-size: 15px;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 4px;
  padding-right: 24px;
  line-height: 1.3;
}

.panel-meta {
  font-size: 12px;
  color: #777;
  margin-bottom: 4px;
}

.panel-divider {
  border: none;
  border-top: 1px solid #eee;
  margin: 10px 0;
}

.panel-section-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #aaa;
  margin-bottom: 6px;
}

.panel-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  margin-bottom: 5px;
  color: #333;
}

.panel-key {
  color: #777;
  flex-shrink: 0;
  font-size: 12px;
}

.panel-badge-row {
  margin-top: 2px;
  margin-bottom: 4px;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.badge-under {
  background: #fde8e8;
  color: #c0392b;
}

.badge-over {
  background: #e8f5e9;
  color: #27ae60;
}