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

    /* subtle background pattern */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.04) 0%, transparent 30%),
                        radial-gradient(circle at 80% 70%, rgba(255,215,0,0.05) 0%, transparent 40%);
      pointer-events: none;
    }

    /* ----- POPUP OVERLAY (covers screen, clickable to close) ----- */
    .popup-overlay {
      position: fixed;
      inset: 0;
      background-color: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(6px);
      -webkit-backdrop-filter: blur(6px);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 1000;
      animation: fadeInOverlay 0.3s ease-out;
      padding: 1rem;
    }

    /* ----- POPUP CARD ----- */
    .popup-card {
      background: #ffffff;
      border-radius: 2.5rem 2.5rem 2.5rem 2.5rem;
      max-width: 480px;
      width: 100%;
      padding: 2.5rem 2rem 2.2rem;
      box-shadow: 0 30px 50px rgba(0,0,0,0.5), 0 10px 25px rgba(0,0,0,0.4);
      position: relative;
      animation: slideUpPop 0.4s cubic-bezier(0.2, 0.9, 0.3, 1);
      text-align: center;
      border: 1px solid rgba(255, 215, 0, 0.25);
      background: radial-gradient(circle at 20% 10%, #fff9e6, #ffffff 70%);
      transition: transform 0.2s ease;
    }

    .popup-card:hover {
      transform: scale(1.01);
    }

    /* ----- CLOSE BUTTON (X) ----- */
    .close-button {
      position: absolute;
      top: 1.2rem;
      right: 1.3rem;
      background: #f0f0f0;
      border: none;
      width: 36px;
      height: 36px;
      border-radius: 50%;
      font-size: 1.5rem;
      line-height: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: #4a4a4a;
      background: #f2f2f2;
      backdrop-filter: blur(4px);
      box-shadow: 0 4px 10px rgba(0,0,0,0.08);
      transition: all 0.2s ease;
      font-weight: 400;
      z-index: 10;
      border: 1px solid rgba(0,0,0,0.05);
    }

    .close-button:hover {
      background: #ffffff;
      color: #c44536;
      box-shadow: 0 8px 15px rgba(0,0,0,0.15);
      transform: rotate(90deg);
      border-color: rgba(0,0,0,0.1);
    }

    /* decorative room icon */
    .room-icon {
      font-size: 3.2rem;
      margin-bottom: 0.5rem;
      display: block;
      filter: drop-shadow(0 6px 8px rgba(0,0,0,0.1));
      letter-spacing: 2px;
    }

    .sale-badge {
      background: #c44536;
      color: white;
      display: inline-block;
      padding: 0.4rem 1.3rem;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.9rem;
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 1.2rem;
      background: linear-gradient(135deg, #d65a4b, #b23b2c);
      box-shadow: 0 8px 14px rgba(180, 60, 40, 0.3);
    }

    h2 {
      font-size: 2.3rem;
      font-weight: 700;
      color: #1e1e2f;
      margin: 0.5rem 0 0.2rem;
      letter-spacing: -0.5px;
      line-height: 1.2;
    }

    .room-text {
      font-size: 2.6rem;
      font-weight: 800;
      background: linear-gradient(145deg, #2d2a3a, #0f0f1a);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin: 0.2rem 0 0.3rem;
    }

    .price {
      font-size: 3.8rem;
      font-weight: 800;
      color: #1b3b36;
      background: linear-gradient(to right, #1f4b3d, #2c5e4a);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin: 0.5rem 0 0.2rem;
      letter-spacing: -0.5px;
      text-shadow: 2px 2px 10px rgba(0,80,60,0.15);
    }

    .month-highlight {
      font-size: 2rem;
      font-weight: 700;
      color: #c47a3c;
      text-transform: uppercase;
      background: #fff2e0;
      display: inline-block;
      padding: 0.2rem 1.8rem;
      border-radius: 40px;
      margin: 0.5rem 0 1.2rem;
      letter-spacing: 2px;
      border: 1px dashed #d99c5e;
    }

    .details {
      font-size: 1rem;
      color: #4b4b4b;
      margin: 1.2rem 0 0.8rem;
      font-weight: 500;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.3rem;
      background: #f9f7f2;
      padding: 0.5rem 1rem;
      border-radius: 30px;
      width: fit-content;
      margin-left: auto;
      margin-right: auto;
    }

    .cta-note {
      font-size: 0.9rem;
      color: #5a5a5a;
      margin-top: 1.5rem;
      font-style: italic;
      border-top: 1px solid #e0d6c5;
      padding-top: 1rem;
    }

    /* animations */
    @keyframes fadeInOverlay {
      from { opacity: 0; }
      to { opacity: 1; }
    }

    @keyframes slideUpPop {
      0% {
        opacity: 0;
        transform: translateY(40px) scale(0.96);
      }
      100% {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    /* responsive adjustments */
    @media (max-width: 480px) {
      .popup-card {
        padding: 2rem 1.5rem 1.8rem;
        border-radius: 2rem;
      }
      .price {
        font-size: 3rem;
      }
      .room-text {
        font-size: 2rem;
      }
    }