:root {
  color-scheme: light;
  --ink: #142238;
  --muted: #65748a;
  --line: #dfe5ed;
  --surface: #ffffff;
  --canvas: #edf2f7;
  --accent: #e4572e;
  --accent-dark: #bd3d1c;
  --navy: #142c4c;
  --success: #13795b;
  --shadow: 0 18px 45px rgba(20, 34, 56, 0.08);
}

* { box-sizing: border-box; }
html { font-size: 16px; }

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(135deg, rgba(20, 44, 76, 0.035) 25%, transparent 25%) 0 0 / 28px 28px,
    var(--canvas);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }

.topbar {
  background: var(--navy);
  color: #fff;
  border-bottom: 4px solid var(--accent);
}

.topbar__inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: inherit;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand__mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--accent);
  border-radius: 8px 2px 8px 2px;
  font-size: 1.15rem;
}

.topbar__status { color: #cdd7e5; font-size: 0.875rem; display: flex; align-items: center; gap: 8px; text-decoration: none; }
.topbar__status:hover { color: #fff; }
.topbar__nav { display:flex; align-items:center; gap:18px; }
.topbar__nav>a { color:#cdd7e5; font-size:.875rem; text-decoration:none; }
.topbar__nav>a:hover,.topbar__nav>a[aria-current="page"] { color:#fff; }
.cart-link { display:inline-flex; align-items:center; gap:7px; }
.cart-count { min-width:21px; height:21px; padding:0 6px; display:inline-grid; place-items:center; color:#fff; background:var(--accent); border-radius:999px; font-size:.68rem; font-weight:850; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #45d29a; box-shadow: 0 0 0 4px rgba(69, 210, 154, 0.14); }
.workspace { padding-block: 34px 64px; }

.search-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 5px solid var(--navy);
  border-radius: 16px;
  padding: clamp(22px, 4vw, 40px);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3 { margin-top: 0; line-height: 1.2; }
h1 { max-width: 760px; margin-bottom: 10px; font-size: clamp(1.8rem, 4vw, 3.15rem); letter-spacing: -0.045em; }
h2 { margin-bottom: 0; font-size: clamp(1.25rem, 2.5vw, 1.7rem); letter-spacing: -0.025em; }
h3 { margin-bottom: 10px; font-size: 1rem; }
.search-panel__hint { margin: 0; color: var(--muted); }

.search-form { margin-top: 28px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
.search-field { position: relative; }
.search-field svg {
  position: absolute;
  left: 17px;
  top: 50%;
  width: 21px;
  transform: translateY(-50%);
  fill: none;
  stroke: var(--muted);
  stroke-width: 2;
  stroke-linecap: round;
}

.search-field input {
  width: 100%;
  min-height: 54px;
  padding: 0 18px 0 50px;
  color: var(--ink);
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  font-size: 1rem;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.search-field input:focus { background: #fff; border-color: var(--navy); box-shadow: 0 0 0 4px rgba(20, 44, 76, 0.12); }

.primary-button {
  min-height: 54px;
  padding: 0 28px;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 10px;
  font-weight: 800;
  cursor: pointer;
  transition: background 150ms ease, transform 150ms ease;
}

.primary-button:hover { background: var(--accent-dark); }
.primary-button:active { transform: translateY(1px); }
.stock-filter { margin-top: 15px; display: inline-flex; align-items: center; gap: 9px; color: var(--muted); font-size: 0.9rem; cursor: pointer; }
.stock-filter input { width: 17px; height: 17px; accent-color: var(--accent); }

.catalog-summary {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) 1.4fr;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--line);
}

.summary-item { min-height: 88px; padding: 17px 20px; display: flex; flex-direction: column; justify-content: center; background: rgba(255, 255, 255, 0.92); }
.summary-item__label { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.07em; }
.summary-item strong { margin-top: 4px; font-size: 1.2rem; }
.results-section { margin-top: 36px; }
.results-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; padding-bottom: 14px; border-bottom: 1px solid #cbd5e1; }
.results-count { color: var(--muted); font-size: 0.875rem; }
.results { margin-top: 14px; }
.result-list { display: grid; gap: 10px; }

.result-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 7px 20px rgba(20, 34, 56, 0.035);
}

.result-card__heading { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; margin-bottom: 9px; }
.brand-chip { padding: 4px 8px; color: #fff; background: var(--navy); border-radius: 5px; font-size: 0.75rem; font-weight: 800; }
.cross-badge { padding:3px 7px; color:#7b4e00; background:#fff1c9; border-radius:999px; font-size:.67rem; font-weight:850; text-transform:uppercase; letter-spacing:.035em; }
.part-number { color: var(--accent-dark); font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; font-size: 0.92rem; font-weight: 800; }
.result-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--muted); font-size: 0.82rem; }
.result-card__price { min-width: 170px; display: flex; flex-direction: column; align-items: flex-end; text-align: right; }
.result-card__price > span:not(.availability) { color: var(--muted); font-size: 0.75rem; }
.result-card__price strong { font-size: 1.15rem; }
.availability { margin-bottom: 5px; color: var(--muted); font-size: 0.78rem; font-weight: 700; }
.availability--yes { color: var(--success); }
.offer-origin { color:var(--success); font-weight:800; }
.grouped-offers { display:grid; gap:10px; }
.offer-group { overflow:hidden; background:#fff; border:1px solid var(--line); border-radius:12px; box-shadow:0 7px 20px rgba(20,34,56,.035); }
.offer-group summary { position:relative; padding:18px 48px 18px 20px; display:grid; grid-template-columns:minmax(0,1fr) auto; gap:22px; align-items:center; cursor:pointer; list-style:none; }
.offer-group summary::-webkit-details-marker { display:none; }
.offer-group summary::after { content:"\203A"; position:absolute; right:20px; top:50%; color:var(--muted); font-size:1.65rem; transform:translateY(-50%) rotate(90deg); transition:transform .16s ease; }
.offer-group[open] summary::after { transform:translateY(-50%) rotate(-90deg); }
.offer-group[open] summary { border-bottom:1px solid var(--line); }
.offer-group__main h3 { margin-bottom:7px; }
.offer-group__price { min-width:165px; display:flex; flex-direction:column; align-items:flex-end; text-align:right; }
.offer-group__price>span,.offer-group__price small { color:var(--muted); font-size:.72rem; }
.offer-group__price strong { font-size:1.16rem; }
.offer-variants { display:grid; }
.offer-variant { min-height:58px; padding:10px 20px; display:grid; grid-template-columns:minmax(180px,1.25fr) minmax(120px,.7fr) 82px 118px 34px 108px; gap:12px; align-items:center; border-bottom:1px solid #edf0f4; font-size:.8rem; }
.offer-variant:last-child { border-bottom:0; }
.offer-variant>div { display:flex; flex-direction:column; min-width:0; }
.offer-variant small { overflow:hidden; color:var(--muted); text-overflow:ellipsis; white-space:nowrap; }
.offer-variant__price { text-align:right; font-size:.93rem; }
.cart-add { min-height:36px; padding:0 12px; color:#fff; background:var(--accent); border:0; border-radius:7px; font-size:.74rem; font-weight:800; cursor:pointer; white-space:nowrap; }
.cart-add:hover { background:var(--accent-dark); }
.cart-add:disabled { cursor:wait; opacity:.72; }
.delivery-chip { width:max-content; padding:4px 8px; color:#24415f; background:#e8eff7; border-radius:999px; font-size:.73rem; font-weight:750; }
.text-button { margin-top: 8px; padding: 0; color: var(--accent-dark); background: transparent; border: 0; font-weight: 750; cursor: pointer; }
.text-button:hover { text-decoration: underline; }
.provider-section { margin-top:36px; }
.provider-head { display:flex; justify-content:space-between; align-items:flex-end; gap:20px; padding-bottom:14px; border-bottom:1px solid #cbd5e1; }
.provider-badge { display:inline-flex; align-items:center; gap:7px; padding:5px 10px; color:#096044; background:#dcf5ea; border-radius:999px; font-size:.72rem; font-weight:850; }
.provider-badge span { width:7px; height:7px; background:#20a879; border-radius:50%; box-shadow:0 0 0 4px rgba(32,168,121,.13); }
.provider-body { margin-top:14px; }
.provider-choice { padding:20px; background:#fff; border:1px solid var(--line); border-radius:12px; box-shadow:0 7px 20px rgba(20,34,56,.035); }
.brand-options { margin-top:14px; display:flex; flex-wrap:wrap; gap:8px; }
.brand-options button { padding:10px 13px; color:var(--navy); background:#edf3f9; border:1px solid #cfdae7; border-radius:8px; font-weight:800; cursor:pointer; }
.brand-options small { display:block; margin-top:2px; color:var(--muted); font-size:.7rem; font-weight:600; }
.cross-list { display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:8px; max-height:560px; overflow:auto; }
.cross-list button { padding:11px; display:grid; grid-template-columns:auto 1fr; gap:2px 9px; text-align:left; color:var(--ink); background:#f7f9fc; border:1px solid var(--line); border-radius:8px; cursor:pointer; }
.cross-list button:hover { border-color:#9fb0c4; background:#fff; }
.cross-list button span { color:var(--muted); font-size:.73rem; font-weight:700; }
.cross-list button strong { font-family:"SFMono-Regular",Consolas,monospace; font-size:.86rem; }
.cross-list button small { grid-column:1/-1; color:var(--muted); font-size:.72rem; }
.provider-empty { color:var(--muted); font-size:.84rem; }

.empty-state, .error-state {
  min-height: 220px;
  padding: 36px;
  display: grid;
  place-items: center;
  align-content: center;
  text-align: center;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.56);
  border: 1px dashed #b9c4d2;
  border-radius: 12px;
}

.empty-state__icon { width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 4px; color: var(--navy); background: #dfe8f3; border-radius: 50%; font-size: 1.25rem; font-weight: 800; }
.error-state { color: #9f2f20; background: #fff5f3; border-color: #e8b6ae; }
.loading-state { display: grid; gap: 10px; }
.skeleton { height: 112px; border-radius: 12px; background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%); background-size: 200% 100%; animation: shimmer 1.2s infinite linear; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@keyframes shimmer { to { background-position: -200% 0; } }

@media (max-width: 760px) {
  .workspace { padding-top: 20px; }
  .topbar__nav .topbar__status { display: none; }
  .search-form { grid-template-columns: 1fr; }
  .catalog-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .summary-item--wide { grid-column: 1 / -1; }
  .result-card { grid-template-columns: 1fr; gap: 14px; }
  .result-card__price { min-width: 0; align-items: flex-start; text-align: left; }
  .offer-group summary { grid-template-columns:1fr; gap:10px; padding-right:42px; }
  .offer-group__price { min-width:0; align-items:flex-start; text-align:left; }
  .offer-variant { grid-template-columns:minmax(0,1fr) auto; gap:7px 12px; }
  .offer-variant .delivery-chip,.offer-variant .availability { justify-self:start; }
  .offer-variant__price { text-align:right; }
  .offer-variant>.offer-origin { display:none; }
  .offer-variant .cart-add { justify-self:end; }
  .cross-list { grid-template-columns:1fr; }
}

@media (max-width: 430px) {
  .shell { width: min(100% - 20px, 1180px); }
  .search-panel { padding: 20px 16px; }
  .catalog-summary { grid-template-columns: 1fr; }
  .summary-item--wide { grid-column: auto; }
  .results-head { align-items: flex-start; flex-direction: column; gap: 6px; }
  .result-card { padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}