/* AMBLE Reliability v3: connection feedback, loading states and safe actions. */
.network-banner {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  padding: .58rem 1rem;
  border-bottom: 1px solid transparent;
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 650;
}

.network-banner--offline {
  border-color: color-mix(in srgb, var(--warning) 40%, var(--border));
  background: color-mix(in srgb, var(--warning) 18%, var(--surface));
  color: var(--text);
}

.network-banner--online {
  border-color: color-mix(in srgb, var(--positive) 38%, var(--border));
  background: color-mix(in srgb, var(--positive) 18%, var(--surface));
  color: var(--text);
}

.is-offline .btn[type="submit"],
.is-offline [data-quick-add] {
  cursor: not-allowed;
}

.btn.is-busy {
  cursor: wait;
  opacity: .76;
}

.btn.is-busy::after {
  width: .9rem;
  height: .9rem;
  margin-left: .55rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  content: "";
  animation: reliability-spin .7s linear infinite;
}

.reliability-alert {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .8rem;
  align-items: start;
  margin-bottom: var(--space-4);
  padding: .9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
  color: var(--text-soft);
  font-size: var(--text-sm);
  line-height: 1.55;
}

.reliability-alert::before {
  display: grid;
  width: 1.45rem;
  height: 1.45rem;
  place-items: center;
  border-radius: 50%;
  background: var(--warning);
  color: var(--surface);
  content: "!";
  font-size: .76rem;
  font-weight: 800;
}

.reliability-alert--danger {
  border-color: color-mix(in srgb, var(--danger) 35%, var(--border));
  background: color-mix(in srgb, var(--danger) 8%, var(--surface));
}

.reliability-alert--danger::before {
  background: var(--danger);
}

.reliability-alert--success {
  border-color: color-mix(in srgb, var(--positive) 35%, var(--border));
  background: color-mix(in srgb, var(--positive) 9%, var(--surface));
}

.reliability-alert--success::before {
  background: var(--positive);
  content: "✓";
}

.reliability-alert__actions {
  display: flex;
  grid-column: 2;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: .35rem;
}

.page-loading {
  display: grid;
  gap: var(--space-4);
  min-height: 360px;
  padding-block: var(--space-5);
}

.page-loading__head {
  width: min(430px, 82%);
  height: 3.2rem;
}

.page-loading__panel {
  min-height: 270px;
  border-radius: var(--radius-xl);
}

.cart-skeleton {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: var(--space-6);
}

.cart-skeleton__lines {
  display: grid;
  gap: var(--space-3);
}

.cart-skeleton__line {
  height: 150px;
  border-radius: var(--radius-xl);
}

.cart-skeleton__summary {
  height: 320px;
  border-radius: var(--radius-xl);
}

.order-skeleton {
  display: grid;
  gap: var(--space-3);
}

.order-skeleton__card {
  height: 150px;
  border-radius: var(--radius-xl);
}

.product-skeleton {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding-block: var(--space-5) var(--space-8);
}

.product-skeleton__media {
  min-height: min(660px, 68vh);
  border-radius: var(--radius-xl);
}

.product-skeleton__info {
  display: grid;
  align-content: start;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
}

.product-skeleton__info .skeleton:nth-child(1) { width: 32%; height: 1rem; }
.product-skeleton__info .skeleton:nth-child(2) { width: 86%; height: 3rem; }
.product-skeleton__info .skeleton:nth-child(3) { width: 38%; height: 2rem; }
.product-skeleton__info .skeleton:nth-child(4) { width: 100%; height: 7rem; }
.product-skeleton__info .skeleton:nth-child(5) { width: 100%; height: 8rem; }

.cart-line[aria-busy="true"] {
  pointer-events: none;
}

.cart-line[aria-busy="true"]::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: color-mix(in srgb, var(--surface) 45%, transparent);
  content: "";
}

.cart-line__warning {
  margin-top: .6rem;
  color: var(--danger);
  font-size: var(--text-xs);
  font-weight: 700;
}

.checkout-change-notice {
  margin-bottom: var(--space-4);
}

.form-error:not(:empty) {
  padding: .7rem .8rem;
  border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--border));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--danger) 8%, var(--surface));
}

.form-error:focus {
  outline: 3px solid color-mix(in srgb, var(--focus) 32%, transparent);
  outline-offset: 2px;
}

@keyframes reliability-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 820px) {
  .cart-skeleton,
  .product-skeleton {
    grid-template-columns: 1fr;
  }

  .product-skeleton__media {
    min-height: 420px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn.is-busy::after {
    animation-duration: 1.5s;
  }
}