* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Inter', sans-serif;
      transition: background-color 0.4s ease, color 0.4s ease;
    }
    
    .light-theme {
      background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
      color: #212529;
    }
    
    .dark-theme {
      background: linear-gradient(135deg, #0a0e17 0%, #1a1f2e 100%);
      color: #f8f9fa;
    }
    
    .card {
      backdrop-filter: blur(20px);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .light-theme .card {
      background: rgba(255, 255, 255, 0.7);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    }
    
    .dark-theme .card {
      background: rgba(26, 31, 46, 0.6);
      box-shadow: 0 8px 32px rgba(0, 255, 255, 0.1);
      border: 1px solid rgba(0, 255, 255, 0.1);
    }
    
    .card:hover {
      transform: translateY(-4px);
    }
    
    .light-theme .card:hover {
      box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
    }
    
    .dark-theme .card:hover {
      box-shadow: 0 12px 48px rgba(0, 255, 255, 0.2);
      border-color: rgba(0, 255, 255, 0.3);
    }
    
    .btn-primary {
      background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
      color: white;
      padding: 12px 32px;
      border-radius: 12px;
      border: none;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 4px 16px rgba(6, 182, 212, 0.3);
    }
    
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(6, 182, 212, 0.4);
    }
    
    .dark-theme .btn-primary {
      box-shadow: 0 4px 16px rgba(6, 182, 212, 0.5);
    }
    
    .dark-theme .btn-primary:hover {
      box-shadow: 0 8px 32px rgba(6, 182, 212, 0.7);
    }
    
    .input-field {
      width: 100%;
      padding: 14px 20px;
      border-radius: 12px;
      border: 2px solid transparent;
      transition: all 0.3s ease;
      font-size: 16px;
    }
    
    .light-theme .input-field {
      background: rgba(255, 255, 255, 0.9);
      border-color: rgba(6, 182, 212, 0.2);
      color: #212529;
    }
    
    .dark-theme .input-field {
      background: rgba(26, 31, 46, 0.8);
      border-color: rgba(6, 182, 212, 0.3);
      color: #f8f9fa;
    }
    
    .input-field:focus {
      outline: none;
      border-color: #06b6d4;
    }
    
    .dark-theme .input-field:focus {
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
    }
    
    .tab {
      padding: 12px 32px;
      cursor: pointer;
      transition: all 0.3s ease;
      border-radius: 12px;
      font-weight: 600;
    }
    
    .light-theme .tab {
      color: #495057;
    }
    
    .dark-theme .tab {
      color: #adb5bd;
    }
    
    .tab.active {
      background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
      color: white;
    }
    
    .dark-theme .tab.active {
      box-shadow: 0 4px 20px rgba(6, 182, 212, 0.5);
    }
    
    .carrier-card {
      padding: 20px;
      border-radius: 16px;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      border: 2px solid transparent;
    }
    
    .light-theme .carrier-card {
      background: rgba(255, 255, 255, 0.8);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    }
    
    .dark-theme .carrier-card {
      background: rgba(26, 31, 46, 0.5);
      border-color: rgba(6, 182, 212, 0.2);
    }
    
    .carrier-card:hover {
      transform: translateY(-4px) scale(1.02);
      border-color: #06b6d4;
    }
    
    .light-theme .carrier-card:hover {
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    }
    
    .dark-theme .carrier-card:hover {
      box-shadow: 0 8px 32px rgba(6, 182, 212, 0.3);
    }
    
    .carrier-card.selected {
      border-color: #06b6d4;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(8, 145, 178, 0.1) 100%);
    }
    
    .dark-theme .carrier-card.selected {
      box-shadow: 0 0 30px rgba(6, 182, 212, 0.4);
    }
    
    .status-line {
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: relative;
      margin: 40px 0;
    }
    
    .status-line::before {
      content: '';
      position: absolute;
      top: 20px;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, #06b6d4 0%, rgba(6, 182, 212, 0.2) 100%);
      z-index: 0;
    }
    
    .status-point {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      position: relative;
      z-index: 1;
      transition: all 0.3s ease;
    }
    
    .light-theme .status-point {
      background: white;
      box-shadow: 0 4px 16px rgba(6, 182, 212, 0.3);
    }
    
    .dark-theme .status-point {
      background: #1a1f2e;
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
    }
    
    .status-point.active {
      background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
      color: white;
    }
    
    .dark-theme .status-point.active {
      box-shadow: 0 0 30px rgba(6, 182, 212, 0.8);
    }
    
    .result-card {
      animation: slideUp 0.5s ease;
    }
    
    @keyframes slideUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    
    .icon-btn {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.3s ease;
      border: 2px solid transparent;
    }
    
    .light-theme .icon-btn {
      background: rgba(255, 255, 255, 0.7);
      border-color: rgba(6, 182, 212, 0.2);
    }
    
    .dark-theme .icon-btn {
      background: rgba(26, 31, 46, 0.6);
      border-color: rgba(6, 182, 212, 0.3);
    }
    
    .icon-btn:hover {
      transform: rotate(15deg) scale(1.1);
      border-color: #06b6d4;
    }
    
    .dark-theme .icon-btn:hover {
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
    }
    
    .logo {
      font-size: 28px;
      font-weight: 800;
      background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    
    @media (max-width: 768px) {
      .status-line {
        flex-direction: column;
        gap: 20px;
      }
      
      .status-line::before {
        left: 20px;
        top: 0;
        bottom: 0;
        width: 3px;
        height: auto;
      }
      
      body {
        font-size: 14px;
      }
      
      .logo {
        font-size: 24px;
      }
      
      .card {
        padding: 24px !important;
        border-radius: 16px !important;
      }
      
      .tab {
        padding: 10px 20px;
        font-size: 14px;
      }
      
      .btn-primary {
        padding: 14px 24px !important;
        font-size: 16px !important;
      }
      
      h2 {
        font-size: 24px !important;
      }
      
      h3 {
        font-size: 20px !important;
      }
      
      .carrier-card {
        padding: 16px !important;
      }
    }
    
    .about-btn {
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(8, 145, 178, 0.1) 100%);
      border: 2px solid rgba(6, 182, 212, 0.3);
      color: inherit;
      padding: 12px 24px;
      border-radius: 12px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      margin-bottom: 32px;
      width: 100%;
      text-align: center;
    }
    
    .about-btn:hover {
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.2) 0%, rgba(8, 145, 178, 0.2) 100%);
      border-color: #06b6d4;
      transform: translateY(-2px);
    }
    
    .dark-theme .about-btn:hover {
      box-shadow: 0 8px 24px rgba(6, 182, 212, 0.3);
    }
    
    .best-price {
      position: relative;
      overflow: hidden;
    }
    
    .best-price::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(8, 145, 178, 0.15) 100%);
      z-index: 0;
      border-radius: 16px;
    }
    
    .best-price > * {
      position: relative;
      z-index: 1;
    }
    
    .best-badge {
      position: absolute;
      top: 12px;
      right: 12px;
      background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
      color: white;
      padding: 6px 12px;
      border-radius: 8px;
      font-size: 12px;
      font-weight: 700;
      z-index: 2;
      box-shadow: 0 4px 12px rgba(6, 182, 212, 0.4);
    }
    
    .footer-heart {
      display: inline-block;
      color: #06b6d4;
      animation: heartbeat 1.5s ease-in-out infinite;
    }
    
    @keyframes heartbeat {
      0%, 100% { transform: scale(1); }
      25% { transform: scale(1.1); }
      50% { transform: scale(1); }
    }