/* =========================================================
   OpenKit — 04 Overlays + responsive
   ========================================================= */

/* ---------- Cart drawer ---------- */
.scrim {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(6, 24, 35, 0.48);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 0.24s ease;
  pointer-events: none;
}
.scrim.is-open { opacity: 1; pointer-events: auto; }
.scrim[hidden] { display: none; }

.drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  z-index: 100;
  width: min(430px, 100%);
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border-left: 1px solid var(--line-2);
  box-shadow: -30px 0 70px -30px rgba(4, 20, 30, 0.5);
  transform: translateX(102%);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  visibility: hidden;
}
.drawer.is-open { transform: translateX(0); visibility: visible; }
.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 20px;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 1px solid var(--ink);
}
.drawer__title { display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.13em; text-transform: uppercase; }
.drawer__title b { color: var(--orange); font-weight: 500; }
.drawer__close {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border: 1px solid color-mix(in srgb, var(--paper) 30%, transparent);
  background: transparent;
  color: var(--paper);
  cursor: pointer;
}
.drawer__close:hover { background: color-mix(in srgb, var(--paper) 14%, transparent); }
.drawer__close svg { width: 13px; height: 13px; }
.drawer__body { flex: 1; overflow-y: auto; padding: 0 20px; }
.drawer__foot { border-top: 1px solid var(--line-2); padding: 16px 20px 20px; background: var(--paper-2); }

.cart-empty { padding: 44px 10px; text-align: center; }
.cart-empty__box {
  border: 1px dashed var(--line-2);
  padding: 32px 20px;
  margin-bottom: 18px;
}
.cart-empty svg { width: 36px; height: 36px; margin: 0 auto 12px; color: var(--ink-3); }
.cart-empty h3 { font-size: 19px; margin-bottom: 5px; }
.cart-empty p { font-size: 12.5px; color: var(--ink-3); margin-bottom: 16px; }

.cart-line {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.cart-line__icon {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  padding: 8px;
  border: 1px solid var(--line);
  background: var(--raised);
  color: var(--ink-2);
}
.cart-line__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.cart-line__name { font-size: 12.5px; font-weight: 500; line-height: 1.35; }
.cart-line__meta { font-family: var(--font-mono); font-size: 7.5px; letter-spacing: 0.07em; text-transform: uppercase; color: var(--ink-3); margin-top: 2px; }
.cart-line__remove { border: 0; background: none; padding: 0; cursor: pointer; color: var(--ink-3); line-height: 1; }
.cart-line__remove:hover { color: var(--red); }
.cart-line__remove svg { width: 12px; height: 12px; }
.cart-line__bot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 9px; }
.cart-line__price { font-family: var(--font-mono); font-size: 10.5px; color: var(--ink); }

.shipbar { margin-bottom: 16px; }
.shipbar__labels {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 7.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.shipbar__labels b { color: var(--green); font-weight: 500; }
.shipbar__track {
  position: relative;
  height: 6px;
  border: 1px solid var(--line-2);
  background: var(--raised);
}
.shipbar__track span { position: absolute; inset: 0 auto 0 0; background: var(--blue); transition: width 0.3s ease; }
.shipbar__track::after {
  content: "";
  position: absolute;
  top: -3px; bottom: -3px;
  right: 0;
  width: 1px;
  background: var(--orange);
}
.cart-sub {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 6px;
}
.cart-sub span { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.09em; text-transform: uppercase; color: var(--ink-2); }
.cart-sub b { font-family: var(--font-display); font-size: 27px; letter-spacing: -0.03em; }
.cart-tax { font-family: var(--font-mono); font-size: 7.5px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 12px; }
.cart-note { display: flex; align-items: center; gap: 6px; margin-top: 10px; font-family: var(--font-mono); font-size: 7.5px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-3); }
.cart-note svg { width: 11px; height: 11px; color: var(--green); }

/* ---------- Modal ---------- */
.modal-wrap { position: fixed; inset: 0; z-index: 110; display: grid; place-items: center; padding: 24px; }
.modal-wrap[hidden] { display: none; }
.modal-scrim {
  position: absolute;
  inset: 0;
  background: rgba(6, 24, 35, 0.55);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}
.modal {
  position: relative;
  z-index: 1;
  width: min(780px, 100%);
  max-height: min(88vh, 820px);
  overflow-y: auto;
  padding: 26px;
  background: var(--raised);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow);
  animation: modalIn 0.22s ease;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(10px); } }
.modal__close {
  position: absolute;
  top: 12px; right: 12px;
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border: 1px solid var(--line-2);
  background: var(--raised);
  cursor: pointer;
  color: var(--ink-2);
  z-index: 2;
}
.modal__close:hover { border-color: var(--orange); color: var(--orange); }
.modal__close svg { width: 12px; height: 12px; }

/* ---------- Toast ---------- */
.toasts {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 130;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
  width: max-content;
  max-width: calc(100% - 32px);
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  background: var(--ink);
  color: var(--paper);
  border-left: 2px solid var(--orange);
  box-shadow: var(--shadow-sm);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.05em;
  animation: toastIn 0.24s ease;
}
.toast svg { width: 12px; height: 12px; color: #6ee0b4; }
.toast--out { animation: toastOut 0.2s ease forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateY(8px); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(8px); } }

/* ---------- Generated schematics ---------- */
.sch-board { fill: var(--board); stroke: color-mix(in srgb, var(--line-2) 80%, var(--blue)); stroke-width: 1.2; }
.sch-pad { fill: var(--raised); stroke: color-mix(in srgb, var(--line-2) 70%, var(--ink-3)); stroke-width: 0.8; }
.sch-trace { fill: none; stroke: var(--blue); stroke-width: 0.9; opacity: 0.8; }
.sch-trace--b { stroke: var(--orange); opacity: 0.65; }
.sch-part { fill: var(--raised); stroke: var(--line-2); stroke-width: 0.8; }
.sch-text { font-family: var(--font-mono); font-size: 5.6px; letter-spacing: 0.1em; fill: var(--ink-3); }
.sch-text--ink { fill: var(--ink-2); }
.sch-dim { stroke: var(--ink-3); fill: none; stroke-width: 0.5; }
.sch-hole { fill: var(--paper); stroke: var(--line-2); stroke-width: 0.8; }

/* ---------- Responsive ---------- */
@media (max-width: 1120px) {
  .nav { gap: 17px; }
  .nav a { font-size: 9px; }
  .head__in { gap: 22px; }
  .hero__grid { gap: 34px; }
  .cats { grid-template-columns: repeat(4, 1fr); }
  .cat { min-height: 132px; padding: 15px; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .process__step:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .process__step:nth-child(4) { border-top: 1px solid var(--line); }
  .files { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 980px) {
  .nav {
    position: fixed;
    top: var(--head-h);
    left: 0; right: 0;
    z-index: 65;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px 28px 18px;
    background: var(--paper);
    border-bottom: 1px solid var(--line-2);
    box-shadow: var(--shadow);
    transform: translateY(-140%);
    transition: transform 0.26s ease;
    visibility: hidden;
  }
  .nav.is-open { transform: translateY(0); visibility: visible; }
  .nav a { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 10.5px; }
  .nav a::after { display: none; }
  .menu-btn { display: grid; }
  .head__tools { gap: 10px; }
  .switch span:last-child { display: none; }

  .hero { padding-top: 46px; }
  .hero__grid { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { max-width: 15ch; }
  .dwg { max-width: 640px; }

  .split,
  .about-hero__grid,
  .cta { grid-template-columns: 1fr; gap: 30px; }
  .cta { padding: 32px 26px; }
  .about-hero__aside { border-left: 0; border-top: 1px solid var(--line-2); padding-left: 0; padding-top: 18px; }

  .catalog { grid-template-columns: 1fr; gap: 24px; }
  .filters { position: static; display: none; }
  .filters.is-open { display: block; }
  .filter-toggle { display: inline-flex !important; }

  .kit-hero__grid { grid-template-columns: 1fr; gap: 28px; }
  .kit-media { order: -1; }
  .kit-grid--wide,
  .kit-grid { grid-template-columns: repeat(2, 1fr); }

  .bom-layout { grid-template-columns: 1fr; }
  .bom-side { flex-direction: row; flex-wrap: wrap; }
  .bom-side > * { flex: 1 1 260px; }

  .page-head__grid { grid-template-columns: 1fr; }
  .page-head__meta { gap: 20px; }
  .standards { grid-template-columns: 1fr; }

  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .stat:nth-child(4) { border-top: 1px solid var(--line); }

  .titleblock { grid-template-columns: 1.5fr 1fr 1fr; }
  .titleblock div:nth-child(4), .titleblock div:nth-child(5) { display: none; }
  .foot__top { grid-template-columns: 1fr; gap: 34px; }
}

@media (max-width: 760px) {
  .wrap { padding-inline: 20px; }
  .section { padding: 52px 0; }
  .section--tight { padding: 34px 0; }
  .topline__mid { display: none; }
  .topline__in { font-size: 7.5px; }
  .brand__sub { display: none; }
  .brand__name { font-size: 19px; }
  .head__in { height: 64px; }
  :root { --head-h: 64px; }
  .cart-btn span:not(.cart-count) { display: none; }
  .cart-btn { padding: 10px 11px; }

  .hero h1 { font-size: clamp(38px, 10vw, 52px); }
  .hero__trust { gap: 8px 14px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { padding: 16px 18px; }

  .cats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .cat { min-height: 124px; padding: 14px; }
  .cat__name { font-size: 15px; }

  .kit-grid--wide,
  .kit-grid { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .index__row { grid-template-columns: 34px 1fr 80px; gap: 10px; row-gap: 6px; padding: 13px 4px; }
  .index__head { display: none; }
  .index__row > .index__count { grid-column: 2; }
  .index__row > .tag { grid-column: 2; justify-self: start; }
  .index__row > .index__match { display: none; }
  .index__row > .index__link { grid-column: 3; grid-row: 1 / span 2; align-self: center; }

  .sec-head { grid-template-columns: 1fr auto; gap: 10px; }
  .sec-head__no { grid-column: 1 / -1; padding-bottom: 0; }
  .sec-head__side { grid-column: 2; grid-row: 2; }
  .sec-head h2 { font-size: 27px; }

  .cta { padding: 26px 20px; }
  .cta__form .row { flex-direction: column; align-items: stretch; }
  .cta__form .row .btn { width: 100%; }

  .page-head { padding: 32px 0 26px; }
  .page-head h1 { font-size: 38px; }
  .page-head__meta { flex-wrap: wrap; gap: 16px 22px; }

  .toolbar { align-items: flex-start; }
  .toolbar__right { width: 100%; justify-content: space-between; }
  .parts-grid { grid-template-columns: 1fr; }
  .part-card__spec { min-height: 0; }

  .kit-hero h1 { font-size: 36px; }
  .kit-buy { padding: 14px; gap: 12px; }
  .kit-buy .btn { width: 100%; margin-left: 0; }
  .kit-stats { grid-template-columns: 1fr 1fr; }
  .kit-body { padding: 34px 0 60px; }
  .tab { padding: 10px 12px; font-size: 8.5px; }
  .files { grid-template-columns: 1fr; }
  .license-box { grid-template-columns: 1fr; }
  .bom-table { display: block; overflow-x: auto; white-space: normal; }
  .bom-table td, .bom-table th { padding: 9px 8px; }
  .bom-table th:nth-child(4), .bom-table td:nth-child(4) { display: none; }
  .bom-table__spec { overflow-wrap: anywhere; }
  .bom-head { align-items: flex-start; }
  .bom-head__actions { width: 100%; }
  .bom-head__actions .btn { flex: 1; }

  .bom-results { display: block; overflow-x: auto; }
  .bom-results thead { display: none; }
  .bom-results, .bom-results tbody { display: block; }
  .bom-results tr {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px 12px;
    padding: 13px 12px;
    border-bottom: 1px solid var(--line);
  }
  .bom-results tr:last-child { border-bottom: 0; }
  .bom-results td { display: block; padding: 0; border: 0; }
  .bom-results td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 3px;
    font-family: var(--font-mono);
    font-size: 7.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-3);
  }
  .bom-results__raw { grid-column: 1 / -1; max-width: none; font-size: 11px; }
  .bom-results__qty { grid-column: 1; }
  .bom-results__match { grid-column: 1 / -1; }
  .bom-results__match select { width: 100%; min-width: 0; }
  .bom-results__statuscell { grid-column: 1; align-self: end; }
  .bom-results__unit { display: none !important; }
  .bom-results__line { grid-column: 2; align-self: end; }
  .bom-results__line::before { text-align: right; }
  .match-actions { align-items: flex-start; }
  .match-actions .row { width: 100%; }
  .match-actions .btn { flex: 1; }

  .process { grid-template-columns: 1fr; }
  .process__step { border-left: 0; border-top: 1px solid var(--line); }
  .process__step:first-child { border-top: 0; }

  .contact-band { grid-template-columns: 1fr; }
  .contact-band__side { border-left: 0; border-top: 1px solid var(--line-2); }
  .contact-band__main, .contact-band__side { padding: 22px; }
  .about-hero h1 { font-size: 38px; }
  .about-hero { padding: 34px 0 30px; }

  .foot__top { padding: 40px 0 30px; }
  .foot__cols { grid-template-columns: 1fr 1fr; gap: 26px; }
  .foot__bottom { font-size: 7px; }
  .titleblock { grid-template-columns: 1.4fr 1fr; }
  .titleblock div:nth-child(3) { display: none; }

  .partview__grid { grid-template-columns: 1fr; }
  .partview__figure { min-height: 140px; }
  .partview__figure [data-icon] { width: 64px; height: 64px; }
  .modal { padding: 22px 18px; }
  .modal-wrap { padding: 12px; }

  .drawer { width: 100%; }
  .drawer__body { padding: 0 16px; }
  .drawer__foot { padding: 14px 16px 18px; }
}

@media (max-width: 420px) {
  .cat { min-height: 112px; }
  .foot__cols { grid-template-columns: 1fr; }
  .page-head__meta { display: none; }
  .kit-stats { grid-template-columns: 1fr 1fr; }
  .bom-side { flex-direction: column; }
}

@media (max-width: 359px) {
  .cats { grid-template-columns: 1fr; }
}

/* ---------- Motion / print ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .s-trace { stroke-dasharray: none; stroke-dashoffset: 0; }
}

@media print {
  .topline, .site-head, .ticker, .site-foot, .drawer, .scrim, .toasts, .toolbar__right, .filters, .menu-btn { display: none !important; }
  body { background: #fff; color: #000; }
  .plate, .part-card, .kit-card { break-inside: avoid; }
}