/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--size-nav-height);
  display: flex;
  align-items: center;
  padding-inline: var(--grid-margin);
  background-color: var(--color-bg-inverse);
  color: var(--color-fg-inverse);
  transition:
    background-color var(--motion-transition-panel),
    color var(--motion-transition-panel);
}

.nav--overlay {
  background-color: transparent;
}

.nav--overlay.nav--solid {
  background-color: var(--color-bg-inverse);
}

.nav--tint {
  background-color: var(--color-nav-tint);
}

.nav--tint.nav--scrolled {
  background-color: var(--color-nav-tint-strong);
}

.nav--solid {
  background-color: var(--color-bg-inverse);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--grid-max-width);
  margin-inline: auto;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-5);
  color: var(--color-bg-subtle);
  min-width: 0;
}

.nav__brand-text {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3.75rem);
  font-weight: var(--font-weight-regular);
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  white-space: nowrap;
}

.nav__mark {
  flex-shrink: 0;
}

.nav__mark-grid {
  display: grid;
  grid-template-columns: repeat(3, 0.5rem);
  grid-template-rows: repeat(3, 0.5rem);
  width: 1.5rem;
  height: 1.5rem;
}

.nav__mark-cell {
  background-color: var(--color-bg-subtle);
}

.nav__actions {
  display: none;
  align-items: center;
  gap: var(--space-5);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__icons {
  display: none;
}

@media (min-width: 768px) {
  .nav__actions {
    display: flex;
  }

  .nav__menu-trigger {
    display: none;
  }

  .nav__menu-panel {
    display: none !important;
  }
}

.nav__icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--control-height-md);
  min-height: var(--control-height-md);
  color: var(--color-fg-inverse);
  position: relative;
}

.nav__icon-btn svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: square;
}

.nav__icon-btn:hover {
  opacity: 0.85;
}

.nav__icon-btn:active {
  opacity: 1;
  outline: var(--border-width-bold) solid var(--color-fg-inverse);
  outline-offset: calc(-1 * var(--space-1));
}

.nav__icon-btn:focus-visible {
  outline-color: var(--color-fg-inverse);
}

.nav__cart-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--control-height-md);
  min-height: var(--control-height-md);
  color: var(--color-fg-inverse);
  position: relative;
}

.nav__cart-btn svg {
  width: 2rem;
  height: 2rem;
  fill: currentColor;
}

.nav__cart-btn:hover {
  opacity: 0.85;
}

.nav__cart-btn:active {
  opacity: 1;
  outline: var(--border-width-bold) solid var(--color-fg-inverse);
  outline-offset: calc(-1 * var(--space-1));
}

.nav__cart-btn:focus-visible {
  outline-color: var(--color-fg-inverse);
}

.nav__link {
  color: var(--color-fg-inverse);
  text-underline-offset: var(--space-1);
  text-decoration: none;
  transition: opacity var(--motion-transition-hover);
}

.nav__links .nav__link {
  padding-block: var(--space-2);
}

.nav__link:hover {
  opacity: 0.85;
  text-decoration: underline;
  text-decoration-thickness: var(--border-width-hairline);
}

.nav__link[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: var(--border-width-hairline);
}

.nav__link:focus-visible {
  outline-color: var(--color-fg-inverse);
}

.nav__menu-trigger {
  min-width: var(--control-height-md);
  min-height: var(--control-height-md);
  align-items: center;
  justify-content: center;
  color: var(--color-fg-inverse);
}

.nav__menu-panel {
  display: none;
  position: fixed;
  top: var(--size-nav-height);
  left: 0;
  right: 0;
  background-color: var(--color-bg-inverse);
  color: var(--color-fg-inverse);
  padding: var(--space-5) var(--grid-margin);
  z-index: var(--z-sticky);
  opacity: 0;
  transform: translateY(-0.25rem);
  transition:
    opacity var(--motion-transition-panel),
    transform var(--motion-transition-panel);
}

@media (max-width: 767px) {
  .nav__menu-trigger {
    display: flex;
  }

  .nav__menu-panel:not([hidden]) {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
  }

  .nav__menu-panel.is-open {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav__menu-panel .nav__link {
  display: block;
  padding-block: var(--space-2);
}

.nav__cart {
  display: inline-flex;
  align-items: center;
}

.nav__cart-btn.nav__cart,
.nav__icon-btn.nav__cart {
  display: inline-flex;
}

.nav__cart-count {
  position: absolute;
  top: var(--space-1);
  right: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.125rem;
  height: 1.125rem;
  padding-inline: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  letter-spacing: 0;
  text-transform: none;
  font-variant-numeric: tabular-nums;
  color: var(--color-fg-inverse);
  background-color: var(--color-green-700);
  border-radius: 50%;
}

.nav__cart-count[hidden] {
  display: none;
}

@keyframes cart-count-mark {
  0%,
  100% {
    opacity: 1;
  }

  45% {
    opacity: 0.55;
  }
}

.nav__cart-count.is-updated {
  animation: cart-count-mark var(--motion-duration-base) var(--motion-easing-standard);
}

.nav__menu-panel .nav__link .nav__cart-count:not([hidden])::before {
  content: " · ";
  letter-spacing: normal;
}

.nav__menu-panel .nav__link .nav__cart-count {
  position: static;
  min-width: auto;
  height: auto;
  padding: 0;
  background: none;
  border-radius: 0;
  color: inherit;
  font-size: inherit;
  font-weight: inherit;
}

/* Tabs */
.catalog__tabs-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.catalog__tabs {
  position: relative;
  display: flex;
  gap: var(--space-4);
  border-bottom: var(--border-width-hairline) solid var(--color-border-subtle);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.catalog__tab-indicator {
  position: absolute;
  left: 0;
  bottom: 0;
  height: var(--border-width-bold);
  background-color: var(--color-fg-accent);
  pointer-events: none;
  transition:
    transform var(--motion-transition-panel),
    width var(--motion-transition-panel);
  will-change: transform, width;
}

.catalog__whisper {
  color: var(--color-fg-muted);
  letter-spacing: var(--tracking-mono);
  min-height: 1.25rem;
  transition: opacity var(--motion-transition-panel);
}

.catalog__tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  flex-shrink: 0;
  padding: var(--space-2) var(--space-4);
  color: var(--color-fg-muted);
  border-bottom: var(--border-width-bold) solid transparent;
  margin-bottom: calc(-1 * var(--border-width-hairline));
  transition: color var(--motion-transition-hover);
}

.tab:hover {
  color: var(--color-fg-default);
  text-decoration: underline;
  text-underline-offset: var(--space-1);
}

.tab[aria-selected="true"] {
  color: var(--color-fg-default);
}

.tab:focus-visible {
  outline-offset: calc(-1 * var(--space-1));
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--control-height-md);
  padding: var(--space-3) var(--space-5);
  border: var(--border-width-default) solid transparent;
  transition:
    background-color var(--motion-transition-hover),
    color var(--motion-transition-hover),
    border-color var(--motion-transition-hover),
    outline-color var(--motion-duration-instant) var(--motion-easing-standard);
}

.btn--primary {
  background-color: var(--color-action-solid);
  color: var(--color-action-solid-text);
  border-color: var(--color-action-solid);
}

.btn--primary:hover {
  background-color: var(--color-action-hover);
  border-color: var(--color-action-hover);
}

.btn--primary:active:not(:disabled) {
  background-color: var(--color-bg-base);
  color: var(--color-fg-default);
  border-color: var(--color-border-default);
  outline: var(--border-frame);
  outline-offset: calc(-1 * var(--border-width-bold));
}

.btn--secondary {
  background-color: var(--color-bg-base);
  color: var(--color-fg-default);
  border-color: var(--color-border-default);
}

.btn--secondary:hover {
  background-color: var(--color-bg-inverse);
  color: var(--color-fg-inverse);
}

.btn--secondary:active:not(:disabled) {
  background-color: var(--color-bg-subtle);
  color: var(--color-fg-default);
  border-color: var(--color-border-default);
  outline: var(--border-frame);
  outline-offset: calc(-1 * var(--border-width-bold));
}

.btn--panel {
  background-color: var(--color-bg-panel);
  color: var(--color-fg-default);
  border-color: var(--color-bg-panel);
}

.btn--panel:hover {
  background-color: var(--color-bg-inverse);
  color: var(--color-fg-inverse);
  border-color: var(--color-bg-inverse);
}

.btn--panel:active:not(:disabled) {
  background-color: var(--color-olive-500);
  color: var(--color-fg-inverse);
  border-color: var(--color-olive-500);
  outline: var(--border-width-bold) solid var(--color-border-on-panel);
  outline-offset: calc(-1 * var(--border-width-bold));
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-fg-default);
  border-color: transparent;
}

.btn--ghost:hover {
  text-decoration: underline;
  text-underline-offset: var(--space-1);
}

.btn--ghost:active:not(:disabled) {
  background-color: var(--color-bg-subtle);
  text-decoration: underline;
  text-underline-offset: var(--space-1);
}

.btn:disabled {
  background-color: var(--color-bg-subtle);
  color: var(--color-fg-disabled);
  border-color: var(--color-border-subtle);
  cursor: not-allowed;
}

/* Input */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field__label {
  color: var(--color-fg-default);
}

.field__input {
  min-height: var(--control-height-md);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-base);
  border: var(--border-width-default) solid var(--color-border-default);
  color: var(--color-fg-default);
  transition: border-color var(--motion-transition-hover);
}

.field__input::placeholder {
  color: var(--color-fg-placeholder);
  opacity: 1;
}

.field__input:hover {
  border-color: var(--color-green-900);
}

.field__input:focus-visible {
  outline: var(--border-width-bold) solid var(--color-border-default);
  outline-offset: var(--space-1);
}

.field__input[aria-invalid="true"] {
  outline: var(--border-width-bold) solid var(--color-border-default);
  outline-offset: var(--space-1);
}

.field__error {
  color: var(--color-feedback-danger);
}

.field__error::before {
  content: "⚠ ";
}

/* Footer */
.footer {
  background-color: var(--color-bg-inverse);
  color: var(--color-fg-inverse);
  padding-block: var(--space-9);
  padding-inline: var(--grid-margin);
}

.footer__inner {
  max-width: var(--grid-max-width);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-7);
  }
}

.footer__heading {
  margin-bottom: var(--space-4);
}

.footer__text {
  color: var(--color-fg-inverse);
  max-width: 66ch;
}

.footer__text + .footer__text {
  margin-top: var(--space-3);
}

.footer__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer .field__label {
  color: var(--color-fg-inverse);
}

.footer .field__input {
  background-color: var(--color-bg-raised);
  border: var(--border-width-hairline) solid var(--color-border-subtle);
  color: var(--color-fg-default);
}

.footer .field__input::placeholder {
  color: var(--color-fg-placeholder);
  opacity: 1;
}

.footer .field__input:hover {
  border-color: var(--color-border-default);
}

.footer .field__input:focus-visible {
  outline: var(--border-width-hairline) solid var(--color-border-default);
  outline-offset: var(--space-1);
}

.footer__divider {
  border: none;
  border-top: var(--border-width-hairline) solid var(--color-border-on-panel);
  margin-block: var(--space-7);
}

.footer__bottom {
  max-width: var(--grid-max-width);
  margin-inline: auto;
  padding-inline: var(--grid-margin);
  padding-bottom: var(--space-5);
  color: var(--color-olive-400);
}

.footer__link {
  text-underline-offset: var(--space-1);
}

.footer__link:hover {
  text-decoration: underline;
}

.footer__link:focus-visible {
  outline-color: var(--color-fg-inverse);
}

/* Product options (size, finish, container) */
.product-options {
  margin-bottom: var(--space-5);
}

.product-options__label {
  display: block;
  margin-bottom: var(--space-2);
}

.product-options__group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.product-option {
  min-height: var(--control-height-sm);
  padding: var(--space-2) var(--space-4);
  border: var(--border-width-hairline) solid var(--color-border-subtle);
  background-color: var(--color-bg-base);
  color: var(--color-fg-muted);
  transition:
    background-color var(--motion-transition-hover),
    color var(--motion-transition-hover),
    border-color var(--motion-transition-hover);
}

.product-option:hover {
  color: var(--color-fg-default);
  border-color: var(--color-border-default);
}

.product-option:active {
  background-color: var(--color-bg-subtle);
  border-color: var(--color-border-default);
  outline: var(--border-width-bold) solid var(--color-border-default);
  outline-offset: calc(-1 * var(--border-width-bold));
}

.product-option[aria-pressed="true"] {
  background-color: var(--color-bg-panel);
  color: var(--color-fg-inverse);
  border-color: var(--color-bg-panel);
}

.product-option:focus-visible {
  outline-offset: var(--space-1);
}

/* Toast — position only; enter/exit in motion.css */
.toast {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  z-index: var(--z-toast);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-inverse);
  color: var(--color-fg-inverse);
  border: var(--border-width-hairline) solid var(--color-border-on-panel);
  max-width: calc(100% - var(--space-8));
}

.toast[hidden] {
  display: none;
}

.toast__icon {
  flex-shrink: 0;
}

.toast__text {
  font-weight: var(--font-weight-regular);
}

.toast__action {
  color: var(--color-fg-inverse);
  font-weight: var(--font-weight-bold);
  text-decoration: underline;
  text-underline-offset: var(--space-1);
  text-decoration-thickness: var(--border-width-hairline);
  white-space: nowrap;
  padding-left: var(--space-4);
  margin-left: var(--space-1);
  border-left: var(--border-width-hairline) solid var(--color-border-on-panel);
}

.toast__action:hover {
  text-decoration-thickness: var(--border-width-default);
}

.toast__action[hidden] {
  display: none;
}

/* Quantity control */
.qty-btn {
  min-width: var(--control-height-sm);
  min-height: var(--control-height-sm);
  border: var(--border-width-hairline) solid var(--color-border-subtle);
  background-color: var(--color-bg-base);
  color: var(--color-fg-default);
  transition:
    background-color var(--motion-transition-hover),
    border-color var(--motion-transition-hover);
}

.qty-btn:hover {
  border-color: var(--color-border-default);
}

.qty-btn:active {
  background-color: var(--color-bg-panel);
  color: var(--color-fg-inverse);
  border-color: var(--color-bg-panel);
  outline: var(--border-width-bold) solid var(--color-border-on-panel);
  outline-offset: calc(-1 * var(--border-width-bold));
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--density-section-pad) var(--grid-margin);
  background-color: var(--color-bg-subtle);
  border: var(--border-width-hairline) solid var(--color-border-subtle);
}

.empty-state .text-title {
  margin-bottom: var(--space-4);
}

.empty-state .text-body {
  max-width: 40ch;
  margin-inline: auto;
  margin-bottom: var(--space-5);
}