:root {
      --primary: #d4a017;       /* Asosiy oltin rang */
      --primary-dark: #b58900;
      --secondary: #2c3e50;
      --light-bg: #f8f9fa;
      --text-dark: #1a1a1a;
    }

    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
      color: var(--text-dark);
      background: var(--light-bg);
    }

    /* Tarif kartalari */
    .tariff-card {
      background: white;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 10px 30px rgba(0,0,0,0.1);
      transition: all 0.35s ease;
      border: none;
      position: relative;
      height: 100%;
    }

    .tariff-card:hover {
      transform: translateY(-12px);
      box-shadow: 0 20px 50px rgba(212,160,23,0.25);
    }

    .tariff-header {
      background: var(--primary);
      color: white;
      padding: 1.5rem;
      text-align: center;
      font-size: 1.6rem;
      font-weight: 700;
    }

    .tariff-price {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--primary);
      text-align: center;
      padding: 1.5rem 0;
      background: rgba(212,160,23,0.08);
    }

    .tariff-price small {
      font-size: 1.1rem;
      font-weight: 400;
      display: block;
      margin-top: 0.5rem;
    }

    .tariff-features {
      padding: 1.8rem 2rem;
      list-style: none;
    }

    .tariff-features li {
      margin-bottom: 1.1rem;
      font-size: 1.05rem;
      position: relative;
      padding-left: 2rem;
    }

    .tariff-features li::before {
      content: "•";
      position: absolute;
      left: 0;
      color: var(--primary);
      font-size: 1.8rem;
      line-height: 1;
    }

    .tariff-btn {
      display: block;
      width: 85%;
      margin: 1.5rem auto;
      padding: 0.9rem;
      background: var(--primary);
      color: white;
      border: none;
      border-radius: 50px;
      font-weight: 700;
      font-size: 1.1rem;
      transition: all 0.3s;
    }

    .tariff-btn:hover {
      background: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: 0 8px 25px rgba(212,160,23,0.3);
    }

    /* Calculator bo'limi */
    .calculator-section {
      background: white;
      border-radius: 16px;
      box-shadow: 0 10px 40px rgba(0,0,0,0.08);
      padding: 3rem;
      margin: 4rem 0;
    }

    .activity-type {
      text-align: center;
      margin-bottom: 2rem;
    }

    .activity-btn {
      width: 100%;
      padding: 1.2rem;
      margin: 0.8rem 0;
      background: #f1f5f9;
      border: 2px solid transparent;
      border-radius: 12px;
      font-size: 1.1rem;
      font-weight: 600;
      transition: all 0.3s;
      cursor: pointer;
    }

    .activity-btn.active {
      background: var(--primary);
      color: white;
      border-color: var(--primary);
      box-shadow: 0 6px 20px rgba(212,160,23,0.25);
    }

    .activity-btn:hover:not(.active) {
      border-color: var(--primary);
      background: rgba(212,160,23,0.08);
    }

    .calculator-form label {
      font-weight: 600;
      margin-bottom: 0.6rem;
      display: block;
    }

    .calculator-form input {
      width: 100%;
      padding: 0.9rem 1.2rem;
      border: 2px solid #dee2e6;
      border-radius: 10px;
      font-size: 1.1rem;
    }

    .result-btn {
      background: var(--primary);
      color: white;
      border: none;
      padding: 1rem 2.5rem;
      border-radius: 50px;
      font-size: 1.2rem;
      font-weight: 700;
      margin-top: 2rem;
      width: 100%;
      max-width: 400px;
      display: block;
      margin-left: auto;
      margin-right: auto;
    }

    .result-btn:hover {
      background: var(--primary-dark);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .tariff-price { font-size: 2.1rem; }
    }

    @media (max-width: 768px) {
      .calculator-section { padding: 2rem; }
      .activity-btn { font-size: 1rem; padding: 1rem; }
    }



















    
  .activity-card {
    background: white;
    border-radius: 12px;
    padding: 1.2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
  }

  .activity-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
  }

  .activity-checkbox, .activity-radio {
    display: none;
  }

  .activity-label {
    display: block;
    font-weight: 600;
    color: #555;
    transition: all 0.3s;
  }

  .activity-checkbox:checked + .activity-label,
  .activity-radio:checked + .activity-label {
    color: var(--primary);
    font-weight: 700;
  }

  .activity-card.active {
    border-color: var(--primary);
    background: rgba(212,160,23,0.08);
  }

  #resultContainer .alert {
    font-size: 1.3rem;
    padding: 1.5rem;
    border-radius: 12px;
  }