.modal-overlay {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.85);
      z-index: 9999;
      justify-content: center;
      align-items: center;
    }
    .modal-overlay.active {
      display: flex;
    }
    .modal-content {
      background: linear-gradient(160deg, rgba(26, 32, 37, 0.98), rgba(15, 18, 20, 0.99));
      border: 2px solid var(--accent-primary);
      padding: var(--space-2xl);
      max-width: 500px;
      text-align: center;
      box-shadow: 0 0 60px rgba(0, 255, 163, 0.3);
      animation: modalSlideIn 0.3s ease;
    }
    @keyframes modalSlideIn {
      from {
        opacity: 0;
        transform: translateY(-30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .modal-icon {
      font-size: 4rem;
      margin-bottom: var(--space-lg);
    }
    .modal-title {
      font-family: var(--font-display);
      font-size: 1.75rem;
      color: var(--accent-primary);
      margin-bottom: var(--space-md);
    }
    .modal-message {
      color: var(--text-secondary);
      margin-bottom: var(--space-xl);
      line-height: 1.7;
    }
    .modal-btn {
      padding: var(--space-md) var(--space-2xl);
      font-family: var(--font-display);
      font-size: 1rem;
      font-weight: 600;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--bg-deep);
      background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
      border: none;
      cursor: pointer;
      transition: all var(--transition-base);
    }
    .modal-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(0, 255, 163, 0.5);
    }