/* ==========================================================================
   Catalogue, basket and specification modal
   ========================================================================== */

.cat__terms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: var(--space-4);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: oklch(19% 0.020 255 / 0.55);
}

.cat__terms p {
  margin: 0.3rem 0 0;
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Grid plus a basket that tracks the reader down the page. Below the
   breakpoint the basket moves above the grid, so the enquiry stays visible
   without a floating element covering the cards. */
.cat__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 20rem;
  gap: var(--space-5);
  align-items: start;
}

@media (max-width: 68rem) {
  .cat__layout { grid-template-columns: 1fr; }
  .basket { order: -1; position: static !important; }
}

.cat__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: var(--space-3);
}

/* --- Product card -------------------------------------------------------- */

.prod {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--bg-card);
  animation: card-in var(--dur-slow) var(--ease-out) backwards;
  transition: border-color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}

.prod:hover { border-color: var(--hairline-strong); transform: translateY(-2px); }

.prod__head { display: flex; flex-direction: column; gap: 0.4rem; }
.prod__name { font-family: var(--font-display); font-size: 1.2rem; line-height: 1.15; }
.prod__blurb { font-size: var(--text-sm); color: var(--text-muted); margin: 0; }

.prod__research { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.2rem; }
.prod__research li { font-size: 0.75rem; color: var(--text-dim); display: flex; gap: 0.4rem; }
.prod__research li::before { content: "\002022"; color: var(--signal); }

.prod__strengths { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.prod__strengths span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.prod__foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--hairline);
}

.prod__from { font-size: 0.75rem; color: var(--text-dim); display: flex; flex-direction: column; }
.prod__from strong { font-family: var(--font-mono); font-size: 1.05rem; color: var(--text); font-weight: 500; }
.prod__unit { font-size: 0.625rem; }
.prod__from--tbc { font-family: var(--font-eyebrow); letter-spacing: 0.1em; text-transform: uppercase; font-size: 0.625rem; }

/* --- Links between the catalogue and the library -------------------------
   The evidence badge on a product is a control, not a label: it opens the
   library entry behind the price. Underlined on hover so it reads as
   clickable without adding a second colour to a card that already carries
   an evidence colour. */
.ev-badge--link {
  border: 0;
  padding: 0;
  background: none;
  cursor: pointer;
  font: inherit;
  text-align: left;
  border-bottom: 1px dashed currentColor;
}

.ev-badge--link:hover { border-bottom-style: solid; }

.ev-badge--none {
  color: var(--text-dim);
  font-family: var(--font-eyebrow);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.spec__evidence {
  display: inline-block;
  margin-top: var(--space-3);
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  font-family: var(--font-eyebrow);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
  border-bottom: 1px solid var(--signal-line);
  transition: border-color var(--dur-fast) var(--ease-out);
}

.spec__evidence:hover { border-bottom-color: var(--signal); }

/* Purchasable forms listed inside the library drawer. */
.drawer__buy { list-style: none; margin: 0; padding: 0; }

.drawer__buy li { margin-bottom: 0.35rem; }

.drawer__buy button {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: var(--space-3);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  font-size: var(--text-sm);
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.drawer__buy button:hover {
  border-color: var(--signal);
  background: var(--signal-wash);
}

.drawer__buy .mono { font-size: 0.6875rem; color: var(--text-dim); }

/* --- Basket -------------------------------------------------------------- */

.basket {
  position: sticky;
  top: 6rem;
  padding: var(--space-5);
  border: 1px solid var(--signal-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, oklch(24% 0.04 245 / 0.4), oklch(17% 0.018 255 / 0.6));
  backdrop-filter: blur(10px);
}

.basket[data-empty="true"] { border-color: var(--hairline); }

.basket__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--hairline);
}

.basket__badge {
  min-width: 1.6rem;
  height: 1.6rem;
  display: grid;
  place-items: center;
  padding-inline: 0.4rem;
  border-radius: 999px;
  background: var(--signal);
  color: var(--on-signal);
  font-size: 0.75rem;
  font-weight: 600;
}

.basket__list { list-style: none; margin: 0; padding: 0; max-height: 20rem; overflow-y: auto; }

.basket__line {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--hairline);
}

.basket__name { display: block; font-size: var(--text-sm); }
.basket__meta { display: block; font-size: 0.6875rem; color: var(--text-dim); margin-top: 0.1rem; }
.basket__right { display: flex; align-items: flex-start; gap: var(--space-2); font-size: var(--text-sm); white-space: nowrap; }

.basket__remove {
  border: 0;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0 0.15rem;
  transition: color var(--dur-fast) var(--ease-out);
}

.basket__remove:hover { color: var(--ev-limited); }

.basket__totals { margin-top: var(--space-4); }

.basket__row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: var(--text-sm);
  padding-block: 0.22rem;
  color: var(--text-muted);
}

.basket__row--credit { color: var(--ev-strong); }

.basket__row--total {
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--hairline);
  color: var(--text);
  font-size: var(--text-base);
}

.basket__actions { display: flex; gap: var(--space-2); margin-top: var(--space-4); }
.basket__actions .btn { flex: 1; justify-content: center; }
.basket[data-empty="true"] .basket__actions { opacity: 0.45; pointer-events: none; }

/* --- Specification modal ------------------------------------------------- */

/* `display: grid` here overrides the browser's [hidden] { display: none },
   because both rules carry the same specificity and this one loads later.
   Without the guard below the closed modal stays laid out at full viewport
   size with pointer-events enabled: invisible at opacity 0, but swallowing
   every click and scroll on the page. */
.spec[hidden] { display: none; }

.spec {
  position: fixed;
  inset: 0;
  z-index: 85;
  display: grid;
  place-items: center;
  padding: var(--gutter);
  opacity: 0;
  transition: opacity var(--dur) var(--ease-out);
}

.spec[data-open="true"] { opacity: 1; }

.spec__scrim {
  position: absolute;
  inset: 0;
  border: 0;
  cursor: pointer;
  background: oklch(10% 0.014 255 / 0.78);
  backdrop-filter: blur(6px);
}

.spec__panel {
  position: relative;
  width: min(30rem, 100%);
  max-height: 88vh;
  overflow-y: auto;
  padding: var(--space-6) var(--space-5) var(--space-5);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  background: var(--ink-850);
  box-shadow: var(--shadow-deep);
  transform: translateY(1rem) scale(0.985);
  transition: transform var(--dur) var(--ease-out);
}

.spec[data-open="true"] .spec__panel { transform: none; }

.spec__variants { display: flex; flex-direction: column; gap: 0.4rem; margin-top: var(--space-4); }

.spec__variant {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.spec__variant:hover { border-color: var(--hairline-strong); }

/* :has lets the whole row show selection, not just the radio dot. */
.spec__variant:has(input:checked) {
  border-color: var(--signal);
  background: var(--signal-wash);
}

.spec__variant input { accent-color: var(--signal); flex: none; }
.spec__variant-label { font-family: var(--font-mono); font-size: var(--text-sm); }

.spec__variant-price {
  margin-left: auto;
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  display: flex;
  flex-direction: column;
}

.spec__variant-unit {
  font-family: var(--font-body);
  font-size: 0.5625rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

.spec__qty {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.stepper {
  display: flex;
  align-items: center;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.stepper button {
  width: 2.25rem;
  height: 2.25rem;
  border: 0;
  background: var(--ink-800);
  color: var(--text);
  cursor: pointer;
  font-size: 1rem;
  transition: background var(--dur-fast) var(--ease-out);
}

.stepper button:hover { background: var(--signal); color: var(--on-signal); }

.stepper input {
  width: 3rem;
  height: 2.25rem;
  border: 0;
  border-inline: 1px solid var(--hairline);
  background: var(--ink-900);
  color: var(--text);
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  -moz-appearance: textfield;
  appearance: textfield;
}

.stepper input::-webkit-outer-spin-button,
.stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

@media (prefers-reduced-motion: reduce) {
  .spec, .spec__panel, .prod { transition: none; animation: none; }
}