/* Commercial controls — tier ladder, currency selector, distributor handoff.
 *
 * Stays inside the existing fx- design language: navy and cobalt, mono for every
 * numeric, square corners, hairline rules. Deliberately NOT consumer retail —
 * no rounded cards, no badges, no strikethrough "was" prices, no urgency, no
 * colour-coded savings. A machining buyer reading a price list is not being
 * persuaded; they are being informed.
 *
 * Every price uses tabular-nums so the tier column aligns vertically. This is
 * non-negotiable per docs/19 — a price ladder whose digits do not line up is
 * harder to compare, which is the only thing the ladder exists for.
 */

/* ------------------------------------------------ currency selector */

.fx-currency {
  display: inline-flex;
  border: 1px solid var(--fx-rule, var(--color-neutral-300, #E4E7EC));
  background: var(--fx-canvas, var(--color-neutral-0, #FFFFFF));
}

/* An explicit `display` on a class outranks the UA sheet's [hidden] rule at
 * equal specificity, so el.hidden = true would silently do nothing here. Every
 * element in this file that sets `display` needs its own [hidden] companion. */
.fx-currency[hidden],
.fx-commerce[hidden],
.fx-tiers[hidden],
.fx-handoff[hidden],
.fx-tier__unavailable[hidden] {
  display: none !important;
}

.fx-currency__label {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fx-ink-3, var(--color-neutral-500, #7A828F));
  padding: 0.5rem 0.75rem;
  border-right: 1px solid var(--fx-rule, var(--color-neutral-300, #E4E7EC));
  align-self: center;
}

.fx-currency__option {
  appearance: none;
  border: 0;
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--fx-ink-2, var(--color-neutral-700, #444C59));
  padding: 0.5rem 0.9rem;
  min-height: 44px; /* touch target */
}

.fx-currency__option[aria-pressed="true"] {
  background: var(--fx-navy, #0E1A2F);
  color: var(--fx-inv, var(--color-neutral-0, #FFFFFF));
}

.fx-currency__option:focus-visible {
  outline: 2px solid var(--fx-accent, var(--color-accent-700, #0B4096));
  outline-offset: -2px;
}

/* ------------------------------------------------ tier ladder */

.fx-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--fx-rule, var(--color-neutral-300, #E4E7EC)); /* the gap IS the rule — one hairline, not three borders */
  border: 1px solid var(--fx-rule, var(--color-neutral-300, #E4E7EC));
  margin: 1.5rem 0;
}

.fx-tier {
  appearance: none;
  border: 0;
  border-radius: 0;
  background: var(--fx-canvas, var(--color-neutral-0, #FFFFFF));
  cursor: pointer;
  text-align: left;
  padding: 1rem 1.125rem 1.125rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-height: 44px;
}

.fx-tier:hover { background: var(--fx-canvas-2, var(--color-neutral-100, #F4F2F1)); }

.fx-tier:focus-visible {
  outline: 2px solid var(--fx-accent, var(--color-accent-700, #0B4096));
  outline-offset: -2px;
}

.fx-tier[aria-pressed="true"] {
  background: var(--fx-canvas-2, var(--color-neutral-100, #F4F2F1));
  box-shadow: inset 3px 0 0 var(--fx-accent, var(--color-accent-700, #0B4096));
}

.fx-tier__qty {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fx-ink-3, var(--color-neutral-500, #7A828F));
}

/* The number the buyer is comparing. Largest thing in the cell. */
.fx-tier__total {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--fx-ink, var(--color-neutral-900, #0C0F14));
  font-variant-numeric: tabular-nums;
}

/* Smaller, but a full step above caption size and at ink-2, not ink-3 — the
 * per-piece figure is the point of the ladder, so it must stay comfortably
 * readable rather than becoming fine print. */
.fx-tier__each {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--fx-ink-2, var(--color-neutral-700, #444C59));
  font-variant-numeric: tabular-nums;
}

/* A factual sentence, not a badge. No pill, no background, no accent colour. */
.fx-tier__saving {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--fx-ink-3, var(--color-neutral-500, #7A828F));
  margin-top: 0.125rem;
}

/* ------------------------------------------------ no price: the RFQ fallback */

.fx-tier__unavailable {
  grid-column: 1 / -1;
  background: var(--fx-canvas, var(--color-neutral-0, #FFFFFF));
  padding: 1.25rem 1.125rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 1rem;
}

.fx-tier__unavailable-msg {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--fx-ink-2, var(--color-neutral-700, #444C59));
}

.fx-tier__unavailable-action {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--fx-accent, var(--color-accent-700, #0B4096));
  text-underline-offset: 3px;
}

/* ------------------------------------------------ distributor handoff
 *
 * NOT an error state. No red, no warning icon, no alert role. It reads as a
 * routing notice, because that is what it is — the customer is being helped
 * onward, not refused. Navy and cobalt, the same as any other informational
 * panel on the site.
 */

.fx-handoff {
  border: 1px solid var(--fx-rule, var(--color-neutral-300, #E4E7EC));
  border-left: 3px solid var(--fx-accent, var(--color-accent-700, #0B4096));
  background: var(--fx-canvas-2, var(--color-neutral-100, #F4F2F1));
  padding: 1.5rem clamp(1.25rem, 3vw, 2rem);
  margin: 2rem 0;
  max-width: 44rem;
}

.fx-handoff__heading {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fx-ink, var(--color-neutral-900, #0C0F14));
}

.fx-handoff__message {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--fx-ink-2, var(--color-neutral-700, #444C59));
  max-width: 60ch;
}

.fx-handoff__cta {
  display: inline-block;
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fx-inv, var(--color-neutral-0, #FFFFFF));
  background: var(--fx-navy, #0E1A2F);
  padding: 0.75rem 1.25rem;
  min-height: 44px;
  line-height: 1.5;
}

.fx-handoff__cta:hover { background: var(--fx-graphite-deep, #080B10); }

.fx-handoff__cta:focus-visible {
  outline: 2px solid var(--fx-accent, var(--color-accent-700, #0B4096));
  outline-offset: 2px;
}

/* ------------------------------------------------ order cart summary */

.fx-cart__line {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.75rem 1.5rem;
  align-items: baseline;
  padding: 1rem 0;
  border-bottom: 1px solid var(--fx-rule, var(--color-neutral-300, #E4E7EC));
}

.fx-cart__sku {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.8125rem;
  color: var(--fx-ink-2, var(--color-neutral-700, #444C59));
}

.fx-cart__qty,
.fx-cart__total {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-weight: 600;
  color: var(--fx-ink, var(--color-neutral-900, #0C0F14));
  font-variant-numeric: tabular-nums;
}

/* DATA_REQUIRED rows — shipping, tax, grand total. Present so the customer can
 * see the shape of the eventual total, explicitly marked as not yet known.
 * Never rendered as 0.00, which would be a quotation we have not given. */
.fx-cart__pending {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fx-ink-3, var(--color-neutral-500, #7A828F));
}

/* ------------------------------------------------ responsive */

@media (max-width: 40rem) {
  .fx-tiers {
    grid-template-columns: 1fr;
  }

  .fx-tier {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    padding: 0.875rem 1rem;
  }

  /* On one column the saving would push the row to three lines; it is the least
   * load-bearing element, so it takes the full width beneath instead. */
  .fx-tier__saving { flex-basis: 100%; }

  .fx-cart__line {
    grid-template-columns: 1fr auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fx-tier,
  .fx-handoff__cta {
    transition: none;
  }
}

/* ------------------------------------------------ order cart page */

.fx-cart { margin: 1.5rem 0; }

.fx-cart__empty {
  border: 1px solid var(--fx-rule, var(--color-neutral-300, #E4E7EC));
  padding: 2rem clamp(1.25rem, 3vw, 2rem);
  max-width: 44rem;
}

.fx-cart__empty-msg {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--fx-ink, var(--color-neutral-900, #0C0F14));
}

/* The reason the cart is empty, stated plainly. An empty cart with no
 * explanation reads as a broken page; this one is a commercial state. */
.fx-cart__empty-why {
  margin: 0 0 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--fx-ink-2, var(--color-neutral-700, #444C59));
  max-width: 58ch;
}

.fx-cart__empty-cta {
  display: inline-block;
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fx-inv, var(--color-neutral-0, #FFFFFF));
  background: var(--fx-navy, #0E1A2F);
  padding: 0.75rem 1.25rem;
  min-height: 44px;
  line-height: 1.5;
}

.fx-cart__line { grid-template-columns: 1fr auto auto auto; }

.fx-cart__line--subtotal { font-weight: 600; }

.fx-cart__name {
  display: block;
  font-weight: 600;
  color: var(--fx-ink, var(--color-neutral-900, #0C0F14));
}

.fx-cart__note {
  display: block;
  font-size: 0.8125rem;
  color: var(--fx-ink-3, var(--color-neutral-500, #7A828F));
  margin-top: 0.25rem;
}

.fx-cart__prices { display: flex; flex-direction: column; align-items: flex-end; gap: 0.125rem; }

.fx-cart__unit {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.8125rem;
  color: var(--fx-ink-2, var(--color-neutral-700, #444C59));
  font-variant-numeric: tabular-nums;
}

.fx-cart__remove {
  appearance: none;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 0.8125rem;
  color: var(--fx-ink-3, var(--color-neutral-500, #7A828F));
  text-decoration: underline;
  text-underline-offset: 3px;
  min-height: 44px;
  padding: 0 0.25rem;
}

.fx-cart__remove:hover { color: var(--fx-ink, var(--color-neutral-900, #0C0F14)); }

.fx-fields { display: grid; gap: 1.25rem; max-width: 30rem; margin-top: 1.25rem; }

.fx-field { display: flex; flex-direction: column; gap: 0.3rem; }

.fx-field__label {
  font-family: var(--font-mono, ui-monospace, "IBM Plex Mono", SFMono-Regular, Menlo, monospace);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fx-ink-3, var(--color-neutral-500, #7A828F));
}

.fx-field__hint {
  font-size: 0.8125rem;
  color: var(--fx-ink-3, var(--color-neutral-500, #7A828F));
}

.fx-field__input {
  border: 1px solid var(--fx-rule, var(--color-neutral-300, #E4E7EC));
  border-radius: 0;
  background: var(--fx-canvas, var(--color-neutral-0, #FFFFFF));
  color: var(--fx-ink, var(--color-neutral-900, #0C0F14));
  font: inherit;
  font-size: 1rem; /* 16px — below this iOS zooms the viewport on focus */
  padding: 0.7rem 0.75rem;
  min-height: 44px;
}

.fx-field__input:focus-visible {
  outline: 2px solid var(--fx-accent, var(--color-accent-700, #0B4096));
  outline-offset: -2px;
}

@media (max-width: 40rem) {
  .fx-cart__line { grid-template-columns: 1fr auto; }
  .fx-cart__prices { align-items: flex-start; }
}