/* eBikePartsPicker — professional dark studio theme */
:root{
  color-scheme:dark;
  --bg:#0b0d10; --bg2:#10141a;
  --panel:#151a20; --panel2:#1a2129;
  --line:#232b34; --line2:#2f3944;
  --text:#f2f5f3; --muted:#9fa8b1; --faint:#5f6873;
  --accent:#b6e61d; --accent-hi:#cdf53a; --accent-ink:#141a06; --accent-soft:#232c11;
  --display:'Space Grotesk',Inter,-apple-system,'Segoe UI',sans-serif;
  --body:Inter,-apple-system,BlinkMacSystemFont,'SF Pro Text','Segoe UI',system-ui,sans-serif;
  --shadow:0 1px 2px #00000050, 0 12px 32px #00000045;
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);font:15px/1.55 var(--body);
  background:
    radial-gradient(60% 34% at 50% -6%, #b6e61d0d 0%, transparent 70%),
    radial-gradient(80% 50% at 85% 110%, #3d5a7326 0%, transparent 60%),
    var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;min-height:100svh}
[hidden]{display:none!important}
button{font:inherit}
::selection{background:var(--accent);color:#0b0d10}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* ---------- start page ---------- */
.start{min-height:100svh;display:flex;flex-direction:column;align-items:center;
  text-align:center;padding:72px 24px 0;overflow:hidden;position:relative}
.eyebrow{font:600 11.5px/1 var(--body);letter-spacing:3.5px;text-transform:uppercase;
  color:var(--accent);margin-bottom:22px}
.display{font:700 clamp(42px,6.4vw,76px)/1.02 var(--display);letter-spacing:-2.5px;
  margin:0 0 18px}
.display span{color:var(--accent)}
.tagline{margin:0 0 34px;color:var(--muted);font-size:clamp(15px,2vw,18px);max-width:560px}
.start-cta-row{display:flex;gap:12px;width:min(620px,94vw);margin-bottom:40px}
.start-cta-row .combobox{flex:1}
.start-cta-row .cta{white-space:nowrap}
.stats{display:flex;gap:clamp(28px,6vw,64px);margin-bottom:8px}
.stat{display:flex;flex-direction:column;gap:2px}
.stat strong{font:700 30px/1 var(--display);letter-spacing:-1px}
.stat small{font:600 10.5px/1 var(--body);letter-spacing:2px;text-transform:uppercase;color:var(--faint)}
.hero{width:min(780px,96vw);height:auto;margin-top:6px;
  -webkit-mask-image:radial-gradient(ellipse 86% 84% at 50% 48%, #000 64%, transparent 99%);
  mask-image:radial-gradient(ellipse 86% 84% at 50% 48%, #000 64%, transparent 99%)}

/* ---------- buttons & inputs ---------- */
.cta{background:linear-gradient(180deg,var(--accent-hi),var(--accent));color:var(--accent-ink);
  border:0;border-radius:14px;padding:14px 34px;font-size:15.5px;font-weight:800;
  letter-spacing:.1px;cursor:pointer;
  box-shadow:0 8px 26px #b6e61d30,inset 0 1px 0 #ffffff55;
  transition:transform .14s,box-shadow .14s,filter .14s}
.cta:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 30px #b6e61d40,inset 0 1px 0 #ffffff55}
.cta:active{transform:translateY(0)}
select{appearance:none;-webkit-appearance:none;width:100%;background:var(--panel2);
  color:var(--text);border:1px solid var(--line2);border-radius:14px;
  padding:14px 42px 14px 16px;font:500 15px/1.4 var(--body);cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%239fa8b1' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;
  box-shadow:var(--shadow);transition:border-color .14s,box-shadow .14s}
select:hover{border-color:#46505b}
select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #b6e61d2b}

/* ---------- top bar + tabs ---------- */
.topbar{position:sticky;top:0;z-index:10;background:#0b0d10d9;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  padding:14px clamp(16px,4vw,40px);display:flex;align-items:center;
  justify-content:space-between;gap:12px}
.logo{display:flex;align-items:center;gap:11px}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:9px;color:var(--accent-ink);
  background:linear-gradient(180deg,var(--accent-hi),var(--accent));
  box-shadow:0 4px 14px #b6e61d40}
.wordmark{font:700 18px/1 var(--display);letter-spacing:-.5px}
.tabs{display:flex;gap:4px;background:#141920;border:1px solid var(--line);border-radius:999px;padding:4px}
.tab{border:0;background:none;font:600 14px var(--body);color:var(--muted);
  padding:9px 20px;border-radius:999px;cursor:pointer;transition:all .16s}
.tab:hover{color:var(--text)}
.tab.on{background:var(--accent);color:var(--accent-ink);box-shadow:0 2px 12px #b6e61d40}
.wrap{max-width:1340px;margin:auto;padding:28px clamp(16px,4vw,44px) 100px}

/* ---------- builder layout ---------- */
.builder-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,1fr);
  gap:clamp(24px,3.4vw,52px);align-items:start}
.bcol-left{position:sticky;top:88px}
.pick{margin:2px 0 14px}
.src{font-size:11.5px;color:var(--faint);margin-top:8px}
/* stage melts into the page: backdrop matches the studio shots, edges feathered */
.stage{position:relative;display:flex;align-items:center;justify-content:center;
  padding:4px;
  background:radial-gradient(115% 92% at 50% 42%, #2b3036 0%, #1d2126 55%, transparent 100%)}
.stage img{display:block;width:100%;max-height:min(430px,46vh);object-fit:contain;
  -webkit-mask-image:radial-gradient(ellipse 84% 82% at 50% 48%, #000 68%, transparent 99%);
  mask-image:radial-gradient(ellipse 84% 82% at 50% 48%, #000 68%, transparent 99%)}
.badges{position:absolute;top:12px;left:12px;display:flex;flex-wrap:wrap;gap:8px;max-width:84%}
.badge{background:#000000bd;color:#fff;font-size:12px;font-weight:700;border-radius:9px;
  padding:7px 12px;letter-spacing:.2px;box-shadow:0 2px 10px #0007;
  border:1px solid #ffffff17;backdrop-filter:blur(4px)}
.badge .cat{opacity:.65;font-weight:600;margin-right:6px;font-size:10px;
  text-transform:uppercase;letter-spacing:1.2px;color:var(--accent)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0 4px}
.metric{background:linear-gradient(180deg,var(--panel2),var(--panel));
  border:1px solid var(--line);border-radius:14px;padding:12px 16px 13px;box-shadow:var(--shadow);
  position:relative;overflow:hidden}
.metric::after{content:'';position:absolute;top:0;left:14px;right:14px;height:2px;
  background:linear-gradient(90deg,transparent,#b6e61d66,transparent);opacity:.7}
.metric small{display:block;color:var(--muted);font-size:10px;font-weight:700;
  text-transform:uppercase;letter-spacing:1.4px;margin-bottom:4px}
.metric strong{font:700 clamp(19px,2.2vw,25px)/1 var(--display);letter-spacing:-.8px}
#mTotal{color:var(--accent)}

/* ---------- wizard ---------- */
.stepbar{margin:2px 0 4px}
.steplabel{font:700 14px var(--body);margin-bottom:10px;letter-spacing:.1px;
  display:flex;align-items:center;gap:10px}
.steplabel .stepnum{font:700 11px var(--body);color:var(--accent-ink);background:var(--accent);
  border-radius:999px;padding:3px 10px;letter-spacing:1px}
.progress{height:6px;background:#1c222a;border-radius:999px;overflow:hidden}
.progress .fill{height:100%;background:linear-gradient(90deg,#7fa310,var(--accent));
  width:0;transition:width .28s ease;border-radius:999px;box-shadow:0 0 12px #b6e61d66}
#stepBody .ppick{padding:16px 0 4px}
.ppick label{display:block;font:700 12px var(--body);margin-bottom:10px;
  text-transform:uppercase;letter-spacing:1.6px;color:#c7ced5}
.prow{display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:14px;flex-wrap:wrap;background:linear-gradient(180deg,var(--panel2),var(--panel));
  border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--shadow)}
.pprice{font:700 21px var(--display);letter-spacing:-.5px;display:flex;align-items:center;gap:10px}
.besttag{font:700 10px var(--body);color:var(--accent);background:var(--accent-soft);
  border:1px solid #b6e61d2e;border-radius:999px;padding:4px 10px;
  text-transform:uppercase;letter-spacing:1px}
.tier{font:600 10.5px var(--body);color:var(--faint);text-transform:uppercase;
  letter-spacing:1.2px}
.tier.stock-in-stock{color:var(--accent)}
.tier.stock-out-of-stock,.tier.stock-sold-out{color:#ff7a7a}
.tier.stock-limited{color:#ffc857}
.tier.stock-verify,.tier.stock-unknown{color:var(--faint)}
.buy{background:linear-gradient(180deg,var(--accent-hi),var(--accent));color:var(--accent-ink);
  text-decoration:none;font-weight:800;font-size:14px;border-radius:999px;
  padding:11px 28px;white-space:nowrap;box-shadow:0 4px 16px #b6e61d35;
  transition:transform .14s,filter .14s}
.buy:hover{filter:brightness(1.08);transform:translateY(-1px)}
.alts{font-size:12px;color:var(--faint);margin-top:10px}
.alts a{color:var(--muted)}
.stepnav{display:flex;gap:12px;margin:22px 0 10px}
.stepnav .cta{flex:1;padding:16px 20px;border-radius:14px}
.ghostbtn{flex:1;background:var(--panel);border:1px solid var(--line2);border-radius:14px;
  padding:16px 20px;font-size:15.5px;font-weight:700;color:var(--text);cursor:pointer;
  transition:border-color .14s,background .14s}
.ghostbtn:hover:not(:disabled){border-color:var(--accent);background:var(--panel2)}
.ghostbtn:disabled{opacity:.28;cursor:default}

/* ---------- build list / review ---------- */
.sect{font:700 13px var(--body);text-transform:uppercase;letter-spacing:2.2px;
  color:var(--muted);margin:34px 0 14px;display:flex;align-items:center;gap:12px}
.sect::after{content:'';flex:1;height:1px;background:var(--line)}
.build-list{background:linear-gradient(180deg,var(--panel2),var(--panel));
  border:1px solid var(--line);border-radius:var(--radius);padding:6px 22px;box-shadow:var(--shadow)}
.brow{display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:13px 0;border-bottom:1px solid #20262e;font-size:14.5px}
.brow:last-child{border-bottom:0}
.brow .n{font-weight:600}
.brow .c{color:var(--faint);font-size:10.5px;text-transform:uppercase;
  letter-spacing:1.2px;margin-right:10px;font-weight:700}
.brow .p{font:700 14.5px var(--display);white-space:nowrap;letter-spacing:-.2px}
.brow .rb{font-size:12.5px;color:var(--accent);font-weight:700;text-decoration:none;margin-left:8px}
.brow .rb:hover{text-decoration:underline}
.brow.total{border-top:2px solid var(--line2);margin-top:4px}
.brow.total .p{font-size:20px;color:var(--accent)}
.actions{display:flex;gap:22px;margin:22px 2px;flex-wrap:wrap}
.link{border:0;background:none;color:var(--muted);font:600 13.5px var(--body);
  cursor:pointer;padding:4px 0;text-decoration:underline;text-underline-offset:4px;
  text-decoration-color:#3a434d}
.link:hover{color:var(--accent);text-decoration-color:var(--accent)}
.micro{font-size:11.5px;color:var(--faint);margin:10px 2px}

/* ---------- builds tab ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));
  gap:20px;margin-top:4px}
.card{background:linear-gradient(180deg,var(--panel2),var(--panel));
  border:1px solid var(--line);border-radius:18px;overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:transform .18s,box-shadow .18s,border-color .18s}
.card:hover{transform:translateY(-3px);border-color:var(--line2);
  box-shadow:0 2px 4px #00000050,0 20px 44px #00000060}
.card img{width:100%;height:200px;object-fit:cover;background:#141920;
  border-bottom:1px solid var(--line)}
.card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card .owner{font:700 10.5px var(--body);color:var(--faint);text-transform:uppercase;
  letter-spacing:1.8px}
.card h3{margin:0;font:700 19px var(--display);letter-spacing:-.5px}
.card .blurb{font-size:13.5px;color:var(--muted);margin:0}
.card ul{margin:0;padding:0;list-style:none;font-size:13.5px}
.card li{display:flex;justify-content:space-between;gap:10px;padding:7px 0;
  border-bottom:1px solid #20262e}
.card li:last-child{border-bottom:0}
.card li span:last-child{font:700 13.5px var(--display);white-space:nowrap}
.card .gtotal{display:flex;justify-content:space-between;align-items:baseline;
  font:700 16px var(--display);padding-top:10px;letter-spacing:-.3px}
.card .gtotal span:last-child{color:var(--accent);font-size:19px}
.copybtn{margin-top:10px;border:1px solid var(--line2);background:var(--panel);
  color:var(--text);border-radius:12px;padding:12px;font:700 13.5px var(--body);
  cursor:pointer;transition:border-color .14s,background .14s}
.copybtn:hover{border-color:var(--accent);background:var(--panel2)}
.guidehead{display:flex;align-items:center;justify-content:space-between;gap:10px}
.tiertag{font:700 10px var(--body);text-transform:uppercase;letter-spacing:1.2px;
  color:var(--accent);background:var(--accent-soft);border:1px solid #b6e61d2e;
  border-radius:999px;padding:4px 12px;white-space:nowrap}

.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);
  background:#eef3e4;color:#131a06;border-radius:999px;padding:13px 26px;
  font-size:13.5px;font-weight:700;display:none;z-index:50;
  box-shadow:0 10px 32px #00000070;max-width:88vw;text-align:center}

/* ---------- searchable bike picker ---------- */
.combobox{position:relative}
.combobox input{width:100%;background:var(--panel2);color:var(--text);
  border:1px solid var(--line2);border-radius:14px;padding:14px 44px 14px 16px;
  font:500 15px var(--body);box-shadow:var(--shadow);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239fa8b1' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;
  transition:border-color .14s,box-shadow .14s}
.combobox input:hover{border-color:#46505b}
.combobox input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #b6e61d2b}
.combobox input::placeholder{color:var(--faint)}
.start-combo{flex:1}
.combo-list{position:absolute;top:calc(100% + 8px);left:0;right:0;background:#1b222b;
  border:1px solid var(--line2);border-radius:16px;box-shadow:0 24px 54px #00000080;
  max-height:340px;overflow:auto;z-index:30;padding:8px;text-align:left}
.combo-list::-webkit-scrollbar{width:8px}
.combo-list::-webkit-scrollbar-thumb{background:#2e3742;border-radius:8px}
.combo-item{display:flex;justify-content:space-between;align-items:center;gap:10px;
  width:100%;padding:13px 14px;border:0;border-radius:11px;background:none;cursor:pointer;
  font:500 14.5px var(--body);text-align:left;color:var(--text);transition:background .12s}
.combo-item:hover{background:var(--accent-soft)}
.combo-item span:first-child{font-weight:600}
.combo-price{font:700 13px var(--display);color:var(--muted);white-space:nowrap}
.combo-empty{padding:16px;color:var(--muted);font-size:13.5px;text-align:center}

/* ---------- submit-your-part ---------- */
.suggestbtn{border:1px solid var(--line2);background:var(--panel);color:var(--text);
  border-radius:999px;padding:9px 18px;font:600 13px var(--body);cursor:pointer;
  transition:border-color .14s,background .14s;white-space:nowrap}
.suggestbtn:hover{border-color:var(--accent);background:var(--panel2)}
.modal-overlay{position:fixed;inset:0;z-index:60;background:#060809d9;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  display:flex;align-items:flex-start;justify-content:center;
  padding:6vh 18px;overflow:auto}
.modal{width:min(560px,100%);background:linear-gradient(180deg,var(--panel2),var(--panel));
  border:1px solid var(--line2);border-radius:20px;box-shadow:0 30px 80px #00000090;
  padding:26px 28px 28px}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.modal-head h3{margin:0;font:700 22px var(--display);letter-spacing:-.6px}
.modal-x{border:0;background:var(--panel);color:var(--muted);width:34px;height:34px;
  border-radius:10px;cursor:pointer;font-size:14px;border:1px solid var(--line)}
.modal-x:hover{color:var(--text);border-color:var(--line2)}
.modal-sub{margin:0 0 18px;color:var(--muted);font-size:13.5px}
.flabel{display:block;font:700 11px var(--body);text-transform:uppercase;
  letter-spacing:1.4px;color:var(--muted);margin-bottom:14px}
.flabel input,.flabel textarea,.flabel select{margin-top:7px;width:100%;
  background:var(--bg2);border:1px solid var(--line2);border-radius:12px;
  padding:12px 14px;color:var(--text);font:500 14.5px var(--body);
  text-transform:none;letter-spacing:0}
.flabel textarea{resize:vertical;min-height:70px}
.flabel input:focus,.flabel textarea:focus,.flabel select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #b6e61d2b}
.flabel input::placeholder,.flabel textarea::placeholder{color:var(--faint)}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.formerr{color:#ff7a7a;font-size:13px;font-weight:600;margin:-4px 0 12px}
.cta.full{width:100%}
.micro.center{text-align:center}
.sgpreview{background:var(--bg2);border:1px solid var(--line);border-radius:12px;
  padding:16px;font:12.5px/1.6 ui-monospace,Menlo,monospace;color:var(--muted);
  white-space:pre-wrap;max-height:280px;overflow:auto;margin:0 0 16px}
.sgactions{display:flex;gap:12px;margin-bottom:14px}
.sgactions .copybtn{flex:1;margin-top:0}
.sgactions .buy{flex:1;text-align:center}

@media(max-width:900px){
  .builder-grid{grid-template-columns:1fr}
  .bcol-left{position:static}
  .stage img{max-height:34vh}
  .wrap{padding-top:16px}
  .start{padding-top:56px}
  .start-cta-row{flex-direction:column}
  .start-cta-row .cta{width:100%}
}
@media(max-width:640px){
  .metrics{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
  .display{letter-spacing:-1.5px}
}