.checkout-page {
      padding-top: var(--pat-header-height);
      background: var(--pat-gray-100);
      min-height: 100vh;
    }
    .checkout-header {
      background: linear-gradient(135deg, var(--pat-navy) 0%, var(--pat-blue-deeper) 100%);
      padding: 40px 0;
      text-align: center;
    }
    .checkout-header h1 {
      font-size: 1.8rem;
      font-weight: 900;
      color: #fff;
      margin-bottom: 6px;
    }
    .checkout-header p {
      font-size: 0.92rem;
      color: rgba(255,255,255,0.6);
    }
    .checkout-container {
      max-width: 960px;
      margin: -30px auto 60px;
      padding: 0 24px;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 28px;
      position: relative;
      z-index: 1;
    }

    /* Order Summary */
    .order-summary {
      background: var(--pat-white);
      border-radius: var(--pat-radius-lg);
      padding: 32px 28px;
      box-shadow: var(--pat-shadow-md);
      border: 1px solid var(--pat-gray-200);
      height: fit-content;
      position: sticky;
      top: calc(var(--pat-header-height) + 20px);
    }
    .order-summary .os-label {
      font-size: 0.75rem;
      font-weight: 800;
      color: var(--pat-gray-500);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 6px;
    }
    .order-summary .os-plan-name {
      font-size: 1.5rem;
      font-weight: 900;
      color: var(--pat-navy);
      margin-bottom: 4px;
    }
    .order-summary .os-price {
      font-size: 2.4rem;
      font-weight: 900;
      color: var(--pat-blue);
      margin-bottom: 4px;
    }
    .order-summary .os-price span {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--pat-gray-600);
    }
    .order-summary .os-duration {
      font-size: 0.85rem;
      color: var(--pat-gray-600);
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid var(--pat-gray-200);
    }
    .os-features h4 {
      font-size: 0.78rem;
      font-weight: 800;
      color: var(--pat-gray-500);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 14px;
    }
    .os-features li {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 7px 0;
      font-size: 0.85rem;
      color: var(--pat-gray-700);
    }
    .os-features li .check { color: var(--pat-green); font-weight: 700; }
    .os-features li .cross { color: var(--pat-gray-400); }
    .os-features li.excluded {
      color: var(--pat-gray-400);
      text-decoration: line-through;
    }
    .os-note {
      margin-top: 18px;
      padding: 12px 16px;
      background: var(--pat-blue-pale);
      border-radius: var(--pat-radius-sm);
      font-size: 0.8rem;
      color: var(--pat-blue-dark);
      line-height: 1.5;
    }
    .os-note i { margin-right: 6px; }

    /* Payment Panel */
    .payment-panel {
      background: var(--pat-white);
      border-radius: var(--pat-radius-lg);
      padding: 32px 28px;
      box-shadow: var(--pat-shadow-md);
      border: 1px solid var(--pat-gray-200);
    }
    .payment-panel h2 {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--pat-navy);
      margin-bottom: 6px;
    }
    .payment-panel > p {
      font-size: 0.85rem;
      color: var(--pat-gray-600);
      margin-bottom: 24px;
    }

    /* Payment Tabs */
    .pay-tabs {
      display: flex;
      gap: 8px;
      margin-bottom: 28px;
    }
    .pay-tab {
      flex: 1;
      padding: 14px 12px;
      font-family: var(--pat-font-primary);
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--pat-gray-600);
      background: var(--pat-gray-100);
      border: 2px solid transparent;
      border-radius: var(--pat-radius-sm);
      cursor: pointer;
      transition: var(--pat-transition);
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
    }
    .pay-tab .tab-icon {
      font-size: 1.5rem;
    }
    .pay-tab:hover {
      background: var(--pat-white);
      border-color: var(--pat-gray-300);
    }
    .pay-tab.active {
      background: var(--pat-white);
      border-color: var(--pat-blue);
      color: var(--pat-blue);
      box-shadow: 0 2px 8px rgba(55,147,209,0.15);
    }

    /* Tab Content */
    .tab-content {
      display: none;
    }
    .tab-content.active {
      display: block;
      animation: fadeInUp 0.3s ease;
    }

    /* eSewa / Khalti Branded Buttons */
    .pay-brand-btn {
      width: 100%;
      padding: 18px;
      font-family: var(--pat-font-primary);
      font-size: 1rem;
      font-weight: 800;
      color: #fff;
      border: none;
      border-radius: var(--pat-radius-md);
      cursor: pointer;
      transition: var(--pat-transition);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      margin-top: 16px;
    }
    .pay-brand-btn:hover:not(:disabled) {
      transform: translateY(-2px);
      filter: brightness(1.1);
    }
    .pay-brand-btn:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }
    .esewa-btn { background: #60BB46; box-shadow: 0 4px 14px rgba(96,187,70,0.35); }
    .khalti-btn { background: #5C2D91; box-shadow: 0 4px 14px rgba(92,45,145,0.35); }

    .pay-info {
      padding: 16px;
      background: var(--pat-gray-100);
      border-radius: var(--pat-radius-sm);
      font-size: 0.82rem;
      color: var(--pat-gray-600);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .pay-info strong { color: var(--pat-navy); }

    /* Bank Transfer */
    .qr-section {
      text-align: center;
      margin-bottom: 24px;
    }
    .qr-section img {
      width: 200px;
      height: 200px;
      border-radius: var(--pat-radius-md);
      border: 2px solid var(--pat-gray-200);
      margin: 0 auto 12px;
      object-fit: contain;
      background: #fff;
    }
    .qr-section p {
      font-size: 0.8rem;
      color: var(--pat-gray-500);
    }

    /* Form Fields */
    .pay-form-group {
      margin-bottom: 18px;
    }
    .pay-form-group label {
      display: block;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--pat-gray-700);
      margin-bottom: 6px;
    }
    .pay-form-group label .required {
      color: var(--pat-red);
    }
    .pay-form-group input, .pay-form-group textarea {
      width: 100%;
      padding: 14px 16px;
      font-family: var(--pat-font-primary);
      font-size: 0.92rem;
      color: var(--pat-dark);
      background: var(--pat-gray-100);
      border: 2px solid transparent;
      border-radius: var(--pat-radius-sm);
      transition: var(--pat-transition);
      outline: none;
    }
    .pay-form-group input:focus, .pay-form-group textarea:focus {
      background: var(--pat-white);
      border-color: var(--pat-blue);
      box-shadow: 0 0 0 4px rgba(55,147,209,0.1);
    }
    .pay-form-group textarea {
      resize: vertical;
      min-height: 80px;
    }
    .submit-bank-btn {
      width: 100%;
      padding: 16px;
      font-family: var(--pat-font-primary);
      font-size: 1rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, var(--pat-blue), var(--pat-blue-dark));
      border: none;
      border-radius: var(--pat-radius-sm);
      cursor: pointer;
      transition: var(--pat-transition);
      box-shadow: 0 4px 14px rgba(55,147,209,0.35);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .submit-bank-btn:hover:not(:disabled) {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(55,147,209,0.5);
    }
    .submit-bank-btn:disabled {
      opacity: 0.6;
      cursor: not-allowed;
      background: #ced4da !important;
      box-shadow: none !important;
    }
    .submit-bank-btn .spinner {
      width: 18px; height: 18px;
      border: 2px solid rgba(255,255,255,0.3);
      border-top-color: #fff;
      border-radius: 50%;
      animation: spin 0.6s linear infinite;
      display: none;
    }
    .submit-bank-btn.loading .spinner { display: block; }
    .submit-bank-btn.loading .btn-text { display: none; }

    /* Security Badges */
    .security-badges {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 20px;
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--pat-gray-200);
    }
    .security-badges .sb {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.72rem;
      color: var(--pat-gray-500);
      font-weight: 600;
    }
    .security-badges .sb i {
      color: var(--pat-green);
    }

    /* Success State */
    .success-state {
      display: none;
      text-align: center;
      padding: 60px 24px;
    }
    .success-state.active { display: block; }
    .success-checkmark {
      width: 80px; height: 80px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--pat-green), var(--pat-green-dark));
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 24px;
      animation: scaleIn 0.5s ease;
    }
    .success-checkmark i {
      font-size: 2rem;
      color: #fff;
    }
    @keyframes scaleIn {
      from { transform: scale(0); opacity: 0; }
      to { transform: scale(1); opacity: 1; }
    }
    .success-state h2 {
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--pat-navy);
      margin-bottom: 10px;
    }
    .success-state p {
      font-size: 0.95rem;
      color: var(--pat-gray-600);
      margin-bottom: 8px;
      line-height: 1.6;
    }
    .success-state .dash-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 32px;
      background: linear-gradient(135deg, var(--pat-blue), var(--pat-blue-dark));
      color: #fff;
      font-weight: 700;
      font-size: 0.95rem;
      border-radius: var(--pat-radius-sm);
      margin-top: 24px;
      transition: var(--pat-transition);
      text-decoration: none;
    }
    .success-state .dash-link:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(55,147,209,0.4);
    }

    /* Toast */
    .toast-container {
      position: fixed;
      top: calc(var(--pat-header-height) + 16px);
      right: 16px;
      z-index: 9999;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .toast {
      padding: 14px 20px;
      border-radius: var(--pat-radius-sm);
      font-size: 0.85rem;
      font-weight: 600;
      color: #fff;
      box-shadow: var(--pat-shadow-lg);
      animation: slideInRight 0.3s ease;
      max-width: 380px;
    }
    .toast.success { background: var(--pat-green-dark); }
    .toast.error { background: var(--pat-red); }
    .toast.info { background: var(--pat-blue); }

    /* Responsive */
    @media (max-width: 768px) {
      .checkout-container {
        grid-template-columns: 1fr;
        margin-top: -20px;
      }
      .order-summary {
        position: static;
      }
      .pay-tabs {
        flex-direction: column;
      }
      .pay-tab {
        flex-direction: row;
      }
      .security-badges {
        flex-direction: column;
        gap: 8px;
      }
    }