/* Base wrapper */
    .aq-embed {
      background: #f9fafb;
      color: #1f2937;
      padding: 20px;
      border-radius: 12px;
    }
    .aq-container {
      max-width: 1100px;
      margin: 0 auto;
    }
    .aq-section {
      background: #fff;
      padding: 20px;
      margin-bottom: 20px;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    }
    .aq-section h2 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #111827;
    }
    .aq-section p {
      font-size: 0.9rem;
      color: #6b7280;
      margin-bottom: 15px;
    }
    /* Chart */
    #cities-chart {
      width: 100%;
      height: 400px;
    }
    .aq-tooltip {
      position: absolute;
      text-align: center;
      padding: 6px 10px;
      font-size: 12px;
      background: #fff;
      border: 1px solid #ddd;
      border-radius: 6px;
      pointer-events: none;
      opacity: 0;
      transition: opacity 0.3s;
      box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    }
    /* Cards */
    .aq-cards {
      display: grid;
      grid-template-columns: repeat(auto-fit,minmax(200px,1fr));
      gap: 15px;
      text-align: center;
      margin-bottom: 20px;
    }
    .aq-card {
      padding: 15px;
      border-radius: 10px;
      border: 1px solid #ddd;
    }
    .aq-card h3 {
      font-size: 2rem;
      margin: 0;
    }
    .aq-card p {
      font-size: 0.8rem;
      margin-top: 5px;
    }
    .aq-card--amber {background:#fef3c7; border-color:#fde68a; color:#92400e;}
    .aq-card--red {background:#fee2e2; border-color:#fecaca; color:#991b1b;}
    .aq-card--blue {background:#dbeafe; border-color:#bfdbfe; color:#1e40af;}
    /* AQI Guide */
    .aq-guide-item {
      display: flex;
      align-items: center;
      padding: 8px 12px;
      margin-bottom: 8px;
      border-radius: 8px;
      font-size: 0.9rem;
      border: 1px solid transparent;
    }
    .aq-guide-color {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      margin-right: 10px;
    }
    .aq-good {background:#22c55e; border-color:#bbf7d0;}
    .aq-moderate {background:#eab308; border-color:#fef08a;}
    .aq-usg {background:#f97316; border-color:#fed7aa;}
    .aq-unhealthy {background:#ef4444; border-color:#fecaca;}
    .aq-very {background:#8b5cf6; border-color:#ddd6fe;}
    .aq-hazardous {background:#7f1d1d; border-color:#fecaca; color:#ffffff;}
    /* Causes */
    .aq-causes {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
    }
    .aq-cause {
      display: flex;
      align-items: center;
      gap: 10px;
      flex: 1 1 250px;
    }
    .aq-cause-icon {
      background: #e5e7eb;
      border-radius: 50%;
      padding: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 25px;
      height: 25px;
    }
    .aq-footer {
      text-align: center;
      font-size: 0.8rem;
      color: #6b7280;
      padding-top: 15px;
      border-top: 1px solid #e5e7eb;
      margin-top: 20px;
    }