/* ==========================================================================
   SIL-VEX ENGINEERING — products.css  (products.html only)
   Seal Selector workbench: numbered family rail, data-sheet cards, wizard.
   ========================================================================== */

/* ------------------------------------------------------ selector strip */
.sel-strip{ padding-block: clamp(34px, 5vw, 54px); background: var(--paper); border-bottom:1px solid var(--line); }
.sel-strip-grid{
  display:grid; grid-template-columns: 1fr 1fr 1fr auto; gap: clamp(18px, 3vw, 40px);
  align-items:center;
}
.sel-step{ display:flex; gap:16px; align-items:flex-start; }
.sel-step-no{
  flex:none; width:38px; height:38px; border-radius:50%;
  border:1px solid var(--line); background: var(--bg);
  display:flex; align-items:center; justify-content:center;
  font-size:.78rem; color: var(--red); font-weight:500;
}
.sel-step b{ display:block; font-family: var(--font-display); text-transform:uppercase; letter-spacing:.04em; font-size:.92rem; color: var(--ink); margin-bottom:2px; }
.sel-step p{ margin:0; font-size:.84rem; color: var(--steel-soft); }
.sel-strip-cta{ justify-self:end; }
@media (max-width: 1000px){
  .sel-strip-grid{ grid-template-columns: 1fr 1fr; }
  .sel-strip-cta{ grid-column: 1 / -1; }
}
@media (max-width: 560px){ .sel-strip-grid{ grid-template-columns: 1fr; } }

/* ------------------------------------------------------------ workbench */
.workbench{ padding-top: 44px; }

.wb-toolbar{
  display:flex; justify-content:space-between; align-items:center;
  gap:18px; flex-wrap:wrap; margin-bottom: 16px;
}
.search-box{ position:relative; flex:1; min-width: 240px; max-width: 420px; }
.search-ico{
  position:absolute; left:16px; top:50%; transform: translateY(-50%);
  width:12px; height:12px; border:2px solid var(--steel-soft); border-radius:50%;
  pointer-events:none;
}
.search-ico::after{
  content:""; position:absolute; right:-5px; bottom:-3px;
  width:6px; height:2px; background: var(--steel-soft);
  transform: rotate(45deg);
}
.search-box input{
  font-family: var(--font-mono);
  font-size: .8rem;
  padding: .9em 1em .9em 2.6em;
  border: 1px solid var(--line);
  border-radius: 999px;
  width:100%;
  background: var(--paper);
  color: var(--ink);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.search-box input:focus{ outline:none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(11,59,92,.12); }

.result-count{
  font-size:.7rem; letter-spacing:.12em; text-transform:uppercase;
  color: var(--steel-soft); margin:0; white-space:nowrap;
}

/* pills — mobile / narrow */
.wb-pills{
  display:none; gap:8px; overflow-x:auto; padding: 4px 2px 14px;
  scrollbar-width: none;
}
.wb-pills::-webkit-scrollbar{ display:none; }
.wb-pill{
  flex:none;
  font-family: var(--font-mono); font-size:.68rem; letter-spacing:.05em; text-transform:uppercase;
  padding: .6em 1.05em;
  background: var(--paper); border:1px solid var(--line); border-radius:999px;
  color: var(--steel); cursor:pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.wb-pill .mono{ font-size:.62rem; opacity:.7; }
.wb-pill.is-active{
  background: linear-gradient(135deg, var(--navy-2), var(--navy-deep));
  border-color: var(--navy-deep); color:#fff;
  box-shadow: 0 10px 20px -12px rgba(6,28,44,.6);
}

/* layout */
.wb-layout{
  display:grid; grid-template-columns: 250px 1fr; gap: clamp(24px, 3vw, 44px);
  align-items:start;
}

.wb-rail{
  position:sticky; top: calc(var(--header-h) + 16px);
  border:1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--paper); overflow:hidden;
  box-shadow: var(--shadow-sm);
}
.wb-rail-item{
  width:100%; display:grid; grid-template-columns: 34px 1fr auto; gap:10px;
  align-items:center; text-align:left;
  padding: 13px 16px;
  background:none; border:0; cursor:pointer;
  border-bottom:1px solid var(--line);
  font-family: var(--font-body); color: var(--steel);
  transition: background .15s ease, color .15s ease, padding-left .15s ease;
}
.wb-rail-item:last-child{ border-bottom:0; }
.wb-rail-item:hover{ background: var(--bg); padding-left: 20px; }
.wbr-no{ font-size:.64rem; color: var(--red); letter-spacing:.08em; }
.wbr-name{ font-size:.86rem; font-weight:500; line-height:1.25; }
.wbr-count{
  font-size:.64rem; color: var(--steel-soft);
  background: var(--bg); border-radius:999px; padding: .2em .6em;
}
.wb-rail-item.is-active{
  background: linear-gradient(90deg, rgba(195,49,31,.07), transparent);
  color: var(--ink);
}
.wb-rail-item.is-active .wbr-no{ color: var(--red-2); }
.wb-rail-item.is-active .wbr-count{ background: var(--red); color:#fff; }
.wb-rail-item.is-active::before{ content:"▸ "; color: var(--red); font-size:.7rem; }

/* family sections */
.family-section{ scroll-margin-top: calc(var(--header-h) + 20px); }
.family-section + .family-section{ margin-top: 54px; }
.family-head{
  display:grid; grid-template-columns: auto 1fr auto; gap:18px; align-items:start;
  padding-bottom: 18px; margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
  position:relative;
}
.family-head::after{
  content:""; position:absolute; left:0; bottom:-1px; width: 64px; height:2px;
  background: linear-gradient(90deg, var(--red-2), var(--red));
}
.family-head .num{ padding-top: 8px; }
.family-head h2{ font-size: clamp(1.3rem, 2.6vw, 1.75rem); margin:0 0 .25em; }
.family-head p{ margin:0; font-size:.9rem; color: var(--steel-soft); max-width: 56ch; }
.family-count{
  font-size:.66rem; letter-spacing:.12em; text-transform:uppercase;
  color: var(--steel-soft); white-space:nowrap;
  border:1px solid var(--line); border-radius:999px; padding: .5em 1em; background: var(--paper);
}

/* data-sheet cards */
.ds-grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 14px; }
.ds-card{
  background: var(--paper); border:1px solid var(--line); border-radius: var(--radius-lg);
  overflow:hidden;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.ds-card:hover{ border-color: rgba(195,49,31,.28); box-shadow: var(--shadow-sm); transform: translateY(-3px); }

.ds-head{
  display:grid; grid-template-columns: auto auto 1fr auto; gap:12px; align-items:center;
  padding: 16px 18px 12px;
}
.ds-index{ font-size:.62rem; color: var(--silver); letter-spacing:.08em; }
.ds-code{
  font-size:.7rem; letter-spacing:.07em; color: var(--red); font-weight:500;
  background: rgba(195,49,31,.08); padding: .32em .6em; border-radius: 2px;
}
.ds-head h3{
  font-size:.92rem; text-transform:none; letter-spacing:0; margin:0;
  font-family: var(--font-body); font-weight:600; color: var(--ink);
  line-height: 1.3;
}
.ds-toggle{
  background:none; border:1px solid var(--line); border-radius:999px;
  padding: .5em .9em; cursor:pointer;
  font-size:.64rem; letter-spacing:.06em; text-transform:uppercase; color: var(--steel);
  white-space:nowrap;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.ds-toggle:hover{ border-color: var(--red); color: var(--red); }
.ds-toggle .arr{ display:inline-block; transition: transform .25s ease; }
.ds-card.is-open .ds-toggle .arr{ transform: rotate(45deg); }
.ds-card.is-open .ds-toggle{ background: var(--red); border-color: var(--red); color:#fff; }

.ds-quick{
  display:grid; grid-template-columns: repeat(4, 1fr); gap:1px;
  background: var(--line); border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.dsq{ background: var(--bg); padding: 10px 10px; }
.dsq span{ display:block; font-size:.58rem; letter-spacing:.12em; text-transform:uppercase; color: var(--steel-soft); margin-bottom:3px; }
.dsq b{ font-size:.82rem; color: var(--ink); font-weight:600; line-height:1.25; }

.ds-full{
  max-height:0; overflow:hidden;
  transition: max-height .4s ease;
}
.ds-card.is-open .ds-full{ max-height: 1200px; }
.ds-specs{
  display:grid; grid-template-columns: 1fr 1fr; gap: 8px 16px;
  padding: 14px 18px 4px;
}
.pspec{
  display:flex; flex-direction:column; gap:2px; font-size:.84rem;
  background: var(--bg); border-radius:6px; padding: 8px 11px;
}
.pspec .mono{ font-size:.58rem; letter-spacing:.12em; text-transform:uppercase; color: var(--red); }
.pspec b{ font-weight:500; color: var(--ink); font-size:.8rem; }
.ds-components{ font-size:.83rem; margin: 12px 18px; }
.ds-components .label{
  display:block; font-size:.58rem; letter-spacing:.12em; text-transform:uppercase;
  color: var(--red); margin-bottom:.35em;
}
.ds-apps{ display:flex; flex-wrap:wrap; gap:6px; padding: 0 18px 18px; }
.ds-apps .chip{ cursor: default; }

@media (max-width: 1023px){
  .wb-layout{ grid-template-columns: 1fr; }
  .wb-rail{ display:none; }
  .wb-pills{ display:flex; }
  .family-head{ grid-template-columns: 1fr auto; }
  .family-head .num{ display:none; }
}
@media (max-width: 560px){
  .ds-head{ grid-template-columns: auto 1fr auto; }
  .ds-index{ display:none; }
  .ds-quick{ grid-template-columns: 1fr 1fr; }
  .ds-specs{ grid-template-columns: 1fr; }
  .family-head{ grid-template-columns: 1fr; }
  .family-count{ justify-self:start; }
}

/* ------------------------------------------------------------ selector */
.selector{ background: var(--bg-alt); }
.selector-panel{
  background: var(--paper); border:1px solid var(--line); border-radius: var(--radius-lg);
  display:grid; grid-template-columns: 1.3fr .7fr; gap: 40px;
  padding: clamp(28px, 5vw, 54px);
  position:relative; overflow:hidden;
  box-shadow: var(--shadow);
}
.selector-panel::before{
  content:""; position:absolute; top:0; left:0; right:0; height:3px;
  background: linear-gradient(90deg, var(--red-2), var(--red));
}
.selector-copy{ position:relative; }
.wizard{ display:grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 14px; align-items:end; margin-top: 8px; }
.wz-field{ display:flex; flex-direction:column; gap:7px; }
.wz-field label{
  font-size:.62rem; letter-spacing:.12em; text-transform:uppercase; color: var(--steel-soft);
}
.wz-field select, .wz-field input{
  font-family: var(--font-body); font-size:.9rem;
  padding: .78em .9em; border:1px solid var(--line); border-radius: var(--radius);
  background: var(--bg); color: var(--ink); width:100%;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.wz-field select:focus, .wz-field input:focus{
  outline:none; border-color: var(--navy); background:#fff;
  box-shadow: 0 0 0 3px rgba(11,59,92,.12);
}
.wizard .btn{ justify-self:start; }

.wz-result{
  margin-top: 22px;
  border:1px solid rgba(195,49,31,.3); border-radius: var(--radius-lg);
  background: rgba(195,49,31,.04);
  padding: 22px 24px;
  animation: wzIn .4s cubic-bezier(.2,.6,.2,1);
}
@keyframes wzIn{ from{ opacity:0; transform: translateY(10px); } to{ opacity:1; transform:none; } }
.wz-ok{ font-size:.66rem; letter-spacing:.16em; text-transform:uppercase; color: #1B7A43; }
.wz-result h3{ font-size:1.3rem; margin:.35em 0 .3em; color: var(--red-deep); }
.wz-result p{ font-size:.9rem; margin:0 0 18px; }
.wz-actions{ display:flex; gap:16px; align-items:center; flex-wrap:wrap; }

.selector-side{
  position:relative; border-radius: var(--radius-lg); overflow:hidden;
  background: var(--navy-deep); min-height: 260px;
  display:flex; align-items:center; justify-content:center;
}
.selector-side::before{
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 34px 34px;
}
.sel-ring{
  width:170px; height:170px; border-radius:50%;
  border:2px solid rgba(226,58,37,.6);
  box-shadow: 0 0 0 26px rgba(255,255,255,.04), 0 0 0 52px rgba(255,255,255,.03), 0 0 0 78px rgba(255,255,255,.02);
  animation: spin-slow 26s linear infinite;
}
.sel-ring::before{
  content:""; position:absolute; inset:30px; border-radius:50%;
  border:1px dashed rgba(255,255,255,.25);
}
.sel-cross{
  position:absolute; bottom:14px; right:14px;
  font-size:.58rem; letter-spacing:.2em; color: rgba(255,255,255,.5);
}
@media (max-width: 980px){
  .selector-panel{ grid-template-columns: 1fr; }
  .selector-side{ display:none; }
  .wizard{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px){ .wizard{ grid-template-columns: 1fr; } }

/* custom-made helper strip */
.cat-help{
  display:flex; align-items:center; gap:14px;
  border: 1px dashed var(--silver);
  border-radius: var(--radius-lg);
  background: var(--paper);
  padding: 18px 22px;
  margin-top: 34px;
}
.cat-help-ico{
  flex:none; width:26px; height:26px; border-radius:50%;
  background: var(--navy); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-mono); font-size:.7rem;
}
.cat-help p{ margin:0; font-size:.9rem; }
.cat-help a{ color: var(--red); text-decoration: underline; text-underline-offset: 3px; }

/* ------------------------------------------------------- materials page */
.materials-page{ background: var(--bg-alt); }
.material-detail-grid{
  display:grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.material-detail{
  background: var(--paper); padding: 32px 30px 36px;
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  position:relative; overflow:hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.material-detail:hover{ transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.material-detail::before{
  content:""; position:absolute; top:0; left:0; right:0; height:3px;
  background: linear-gradient(90deg, var(--navy-2), var(--navy));
}
.material-detail h3{ font-size:1.12rem; margin-bottom:.65em; }
.material-detail p{ font-size:.92rem; }
.material-list{ display:flex; flex-direction:column; gap: 13px; }
.material-list li{ font-size:.92rem; padding-left: 18px; position:relative; }
.material-list li::before{
  content:"—"; position:absolute; left:0; color: var(--red-2); font-family: var(--font-mono);
}
.table-scroll{ overflow-x:auto; }
.rubber-table{ width:100%; border-collapse: collapse; margin-top: 16px; font-size:.84rem; }
.rubber-table th, .rubber-table td{ text-align:left; padding: 11px 10px; border-bottom:1px solid var(--line); }
.rubber-table tr:hover td{ background: rgba(11,59,92,.03); }
.rubber-table th{ font-family: var(--font-mono); font-size:.66rem; letter-spacing:.1em; text-transform:uppercase; color: var(--steel-soft); background: var(--bg); }
@media (max-width: 860px){ .material-detail-grid{ grid-template-columns: 1fr; } }

/* --------------------------------------------------------- other range */
.other-range{ background: var(--paper); }
.other-grid{ display:flex; flex-wrap:wrap; gap:10px; }
.other-chip{
  font-size:.76rem; padding: .6em 1.05em;
  border: 1px dashed var(--silver);
  border-radius: 6px; color: var(--steel);
  background: var(--bg);
  transition: border-color .15s ease, color .15s ease, transform .15s ease;
}
.other-chip:hover{ border-color: var(--red); color: var(--red); transform: translateY(-2px); }