.modal-backdrop {
  position: fixed;
  z-index: 50;
  inset: 0;
  display: grid;
  overflow-y: auto;
  place-items: center;
  background: rgb(5 9 15 / 0.66);
  padding: 18px;
  backdrop-filter: blur(8px);
  opacity: 0;
  transition-property: opacity;
  transition-duration: var(--duration-fast);
}

body.modal-open {
  overflow: hidden;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-backdrop.is-visible {
  opacity: 1;
}

.modal-card {
  width: min(720px, 100%);
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 22px;
  opacity: 0;
  transform: translateY(10px) scale(0.985);
  transition-property: opacity, transform;
  transition-duration: var(--duration-normal);
  transition-timing-function: var(--ease);
}

.modal-backdrop.is-visible .modal-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.modal-card-small {
  width: min(460px, 100%);
}

.modal-heading {
  gap: 16px;
  margin-bottom: 20px;
}

.form-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.span-2 {
  grid-column: 1 / -1;
}

.check-row {
  display: flex;
  min-height: 42px;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 650;
}

.check-row input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--blue);
}

.form-error {
  margin: 14px 0 0;
  border-radius: var(--radius-md);
  background: var(--red-soft);
  color: var(--red);
  padding: 10px 12px;
  font-size: 13px;
}

.modal-actions {
  justify-content: flex-end;
  margin-top: 20px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  clip-path: inset(50%);
}

@media (max-width: 1050px) {
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .overview-grid,
  .diagnostic-grid,
  .web-summary-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    gap: 14px;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: 16px;
  }

  .profile-picker {
    padding: 12px 4px;
  }

  .nav-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow: visible;
  }

  .nav-item {
    grid-template-columns: 1fr;
    justify-items: center;
    min-width: 0;
    padding-inline: 4px;
    text-align: center;
  }

  .nav-item span:last-child {
    font-size: 12px;
    line-height: 1.25;
    overflow-wrap: normal;
    word-break: keep-all;
  }

  .sidebar-foot {
    display: none;
  }

  .main-content {
    padding: 18px 14px 36px;
  }

  .topbar,
  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar-actions,
  .lifecycle-actions {
    width: 100%;
  }

  .topbar-actions .button,
  .lifecycle-actions .button {
    flex: 1;
  }

  .action-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .span-2 {
    grid-column: auto;
  }

  .security-hero {
    grid-template-columns: auto 1fr;
  }

  .service-hero {
    grid-template-columns: auto 1fr;
  }

  .security-hero .status-pill,
  .service-hero .status-pill {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .service-actions .button {
    flex: 1 1 140px;
  }
}

@media (max-width: 500px) {
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .metric-card {
    min-height: 126px;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .copy-row {
    grid-template-columns: 1fr;
  }

  .modal-backdrop {
    padding: 8px;
  }

  .modal-card {
    border-radius: 16px;
    padding: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }

  .view,
  .modal-card,
  .modal-backdrop,
  .button,
  .icon-button,
  .nav-item {
    animation: none !important;
    transform: none !important;
    transition-duration: 0.15s !important;
    transition-property: opacity, background-color, border-color, color !important;
  }
}