:root{
    --bg:#0e1012;
    --bg2:#15181b;
    --panel:#1b1f22;
    --panel2:#22272b;
    --line:#353b40;
    --orange:#f47b20;
    --orange2:#ff953d;
    --yellow:#efb83d;
    --text:#f1eee8;
    --muted:#9ea5aa;
    --green:#7bbf59;
    --red:#d85a45;
    --danger:#b23b30;
    --max:1520px;
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{
    margin:0;background:
    linear-gradient(180deg,rgba(255,255,255,.015),transparent 26rem),
    var(--bg);
    color:var(--text);font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;
}
a{color:var(--orange2);text-decoration:none}
a:hover{color:#ffc18f}
button,input,select{font:inherit}
button{cursor:pointer}
h1,h2,h3,p{margin-top:0}
h1,h2,h3,.brand,.eyebrow,.btn,.counter,.metric{
    letter-spacing:.04em
}
h1{font-size:clamp(2rem,4vw,3.5rem);line-height:1;margin-bottom:16px}
h1 span,.brand span{color:var(--orange)}
h2{margin-bottom:10px}
.small{font-size:.85rem}
.center{text-align:center}
.hidden{display:none!important}
.muted{color:var(--muted)}
.eyebrow{font-size:.72rem;font-weight:900;color:var(--orange);margin-bottom:8px}
.hazard-line{
    height:6px;margin:-22px -22px 20px;
    background:repeating-linear-gradient(135deg,var(--orange) 0 16px,#24282b 16px 32px)
}
.panel{
    background:linear-gradient(180deg,var(--panel2),var(--panel));
    border:1px solid var(--line);
    padding:22px;
    position:relative;
    clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
}
.panel.compact{padding:18px}
.topbar{
    min-height:64px;padding:0 max(20px,calc((100vw - var(--max))/2));
    display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--line);
    background:#101315;position:sticky;top:0;z-index:50;
}
.brand{font-weight:1000;color:var(--text);font-size:1rem;white-space:nowrap}
.brand-link:hover{color:var(--text)}
.topbar nav{margin-left:auto;display:flex;align-items:center;gap:18px;font-size:.9rem}
.status-chip,.guest-badge{
    border:1px solid var(--line);padding:6px 9px;font-size:.68rem;color:var(--muted)
}
.dot{display:inline-block;width:7px;height:7px;background:var(--green);margin-right:7px}
.app-shell{
    max-width:var(--max);margin:0 auto;padding:24px 20px 50px;
    display:grid;grid-template-columns:350px minmax(0,1fr);gap:22px;
}
.sidebar{display:flex;flex-direction:column;gap:18px}
.workspace{min-width:0}
.calculator-panel{margin-bottom:18px}
.calc-grid{
    display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:14px;align-items:end
}
.calculate-btn{height:46px;grid-column:1/-1}
label{display:flex;flex-direction:column;gap:7px;color:#c9c6bf;font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em}
input,select{
    width:100%;background:#101315;color:var(--text);border:1px solid #434a50;
    min-height:43px;padding:9px 11px;outline:none;
}
input:focus,select:focus{border-color:var(--orange);box-shadow:0 0 0 1px var(--orange)}
.btn{
    border:1px solid transparent;min-height:43px;padding:10px 16px;
    font-weight:950;font-size:.78rem;text-align:center;
}
.btn.primary{background:var(--orange);color:#111;border-color:#ff9b4b}
.btn.primary:hover{background:var(--orange2)}
.btn.secondary{background:#292e32;color:var(--text);border-color:#4a5157}
.btn.ghost{background:transparent;color:var(--text);border-color:#4a5157}
.btn.danger-btn{background:var(--danger);color:white}
.small-btn{min-height:36px;padding:7px 10px;font-size:.68rem}
.icon-btn{
    width:43px;min-width:43px;height:43px;background:var(--orange);border:0;font-size:1.5rem;font-weight:900
}
.field-row{display:flex;gap:8px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.profile-actions{display:grid;grid-template-columns:1fr auto;gap:8px;margin-top:12px}
.section-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.counter{
    min-width:32px;height:32px;display:grid;place-items:center;background:var(--orange);color:#111;font-weight:1000
}
.alt-panel h2{font-size:1.05rem;margin-bottom:8px}
.mini-actions{display:flex;gap:12px;margin:9px 0 8px}
.text-btn{background:none;border:0;color:var(--orange2);padding:0;font-size:.75rem}
.alternate-list{max-height:54vh;overflow:auto;border-top:1px solid var(--line)}
.alt-row{
    display:grid;grid-template-columns:18px 1fr auto;gap:9px;align-items:center;
    padding:10px 3px;border-bottom:1px solid #2c3135;font-size:.82rem
}
.alt-row input{width:16px;height:16px;min-height:auto;accent-color:var(--orange)}
.tier-chip{font-size:.63rem;color:var(--muted);border:1px solid #3b4145;padding:3px 5px}
.rate-wrap{position:relative}
.rate-wrap input{padding-right:72px}
.rate-wrap span{position:absolute;right:11px;top:13px;color:var(--muted);font-size:.75rem}
.empty-state{text-align:center;padding:60px 25px}
.big-mark{font-size:4.5rem;font-weight:1000;color:var(--orange);line-height:1;margin-bottom:16px}
.results{padding-top:8px}
.result-title{display:flex;justify-content:space-between;gap:12px;align-items:flex-end;margin:20px 0 12px}
.metric-badge{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--muted);font-size:.8rem}
.summary-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px
}
.summary-card{background:#15181a;border:1px solid var(--line);border-left:4px solid var(--orange);padding:15px}
.summary-card strong{display:block;font-family:ui-monospace,Consolas,monospace;font-size:1.2rem;margin-top:5px}
.tabs{display:flex;border-bottom:1px solid var(--line);margin:22px 0 12px}
.tab{border:0;border-bottom:3px solid transparent;background:none;color:var(--muted);padding:11px 14px;font-weight:900;font-size:.75rem}
.tab.active{color:var(--text);border-bottom-color:var(--orange)}
.route-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
.route-card{
    background:linear-gradient(180deg,#1c2023,#171a1c);border:1px solid var(--line);padding:17px;
    position:relative;overflow:hidden
}
.route-card:before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--green)
}
.route-card.locked:before{background:var(--yellow)}
.route-top{display:flex;gap:10px;align-items:flex-start;justify-content:space-between}
.route-top h3{font-size:1.05rem;margin-bottom:3px}
.rank{font-family:ui-monospace,Consolas,monospace;color:var(--orange);font-weight:900}
.route-rate{font-family:ui-monospace,Consolas,monospace;font-size:1.4rem;font-weight:900}
.route-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:13px 0}
.metric{background:#111416;border:1px solid #30363a;padding:9px}
.metric span{display:block;color:var(--muted);font-size:.62rem;margin-bottom:4px}
.metric strong{font-family:ui-monospace,Consolas,monospace;font-size:.92rem}
.route-details{border-top:1px solid #30363a;padding-top:11px;margin-top:10px}
.route-details summary{color:var(--orange2);font-size:.75rem;font-weight:900;cursor:pointer}
.step{padding:8px 0;border-bottom:1px dashed #353b3f;font-size:.78rem}
.step strong{color:var(--text)}
.kv-list{display:grid;grid-template-columns:1fr auto;gap:5px 12px;margin:8px 0;font-size:.75rem}
.kv-list .val{font-family:ui-monospace,Consolas,monospace;color:#dedbd4}
.lock-note{background:#332b17;border:1px solid #695522;color:#f7d477;padding:8px 10px;font-size:.75rem;margin-top:10px}
.alert{padding:10px 12px;margin-bottom:12px;border:1px solid}
.alert.danger{background:#3a1d1a;border-color:#7d3a31;color:#ffc6bd}
.auth-body{min-height:100vh;display:grid;place-items:center;padding:20px}
.auth-shell{width:min(460px,100%)}
.auth-shell>.brand{display:block;text-align:center;font-size:1.3rem;margin-bottom:18px}
.auth-panel h1{font-size:2rem}
.stack{display:flex;flex-direction:column;gap:12px}
.landing{min-height:100vh;display:grid;place-items:center;padding:24px}
.hero{width:min(850px,100%);padding:46px}
.hero .hazard-line{margin:-46px -46px 34px}
.hero-copy{max-width:680px;color:#c7c4bd;font-size:1.08rem;line-height:1.65}
.landing-actions{display:flex;flex-wrap:wrap;gap:10px;margin:25px 0 17px}
.page{max-width:1000px;margin:0 auto;padding:28px 20px}
.page.narrow{max-width:760px}
.page>.panel{margin-bottom:18px}
.account-grid{display:grid;grid-template-columns:140px 1fr;gap:8px}
.account-grid dt{color:var(--muted)}
.danger-zone{border-color:#5d302b}
.danger-text{color:#ff7566}
@media(max-width:1050px){
    .app-shell{grid-template-columns:290px minmax(0,1fr)}
    .calc-grid{grid-template-columns:1fr 1fr}
    .route-grid{grid-template-columns:1fr}
}
@media(max-width:760px){
    .status-chip{display:none}
    .app-shell{grid-template-columns:1fr}
    .sidebar{order:2}
    .workspace{order:1}
    .calc-grid,.summary-grid{grid-template-columns:1fr}
    .calculate-btn{grid-column:auto}
    .topbar{padding:0 12px}
    .topbar nav{gap:9px;font-size:.75rem}
    .brand{font-size:.82rem}
    .hero{padding:27px}
    .hero .hazard-line{margin:-27px -27px 26px}
}


.language-switch{
    display:inline-flex;border:1px solid #3b4145;background:#101315
}
.language-switch a{
    color:var(--muted);padding:5px 8px;font-size:.68rem;font-weight:950;line-height:1
}
.language-switch a.active{
    background:var(--orange);color:#111
}
.auth-language,.landing-language{
    display:flex;justify-content:flex-end;margin-bottom:12px
}
.landing-language{
    position:absolute;top:18px;right:18px;z-index:2
}
.alert.success{
    background:#1f3922;border-color:#487d4e;color:#c9f3cd
}
.block-btn{display:block;width:100%}
@media(max-width:760px){
    .topbar .language-switch{display:none}
}

/* v0.2.0 grouped production-path results */
.product-group .path-count{margin-top:5px;color:var(--muted);font-size:.72rem;font-weight:800}
.product-paths>summary{display:flex;align-items:center;gap:8px;padding:4px 0}
.variant-list{display:flex;flex-direction:column;gap:9px;margin-top:12px}
.variant-card{background:#111416;border:1px solid #30363a;padding:12px}
.variant-card:first-child{border-left:3px solid var(--orange)}
.variant-head{display:flex;justify-content:space-between;gap:12px;align-items:center}
.variant-head>div:first-child{display:flex;align-items:center;gap:8px}
.variant-number{display:inline-grid;place-items:center;min-width:24px;height:24px;padding:0 5px;background:#292e31;color:var(--orange);font-family:ui-monospace,Consolas,monospace;font-weight:950;font-size:.7rem}
.variant-rate{font-family:ui-monospace,Consolas,monospace;font-weight:900;white-space:nowrap}
.variant-stats{display:flex;flex-wrap:wrap;gap:7px;margin:8px 0;color:#d7d3cc;font-family:ui-monospace,Consolas,monospace;font-size:.68rem}
.variant-stats span{background:#1b1f22;border:1px solid #30363a;padding:4px 6px}
.variant-details{margin-top:7px;border-top:1px dashed #30363a;padding-top:7px}
.variant-details>summary{cursor:pointer;color:var(--orange2);font-size:.7rem;font-weight:900}


/* v0.3.0 progression / schematic unlock library */
.progression-copy{line-height:1.45;margin:0 0 10px}
.research-list{max-height:42vh}
.research-group{border-bottom:1px solid #30363a}
.research-group-title{
    position:sticky;top:0;z-index:2;
    padding:8px 3px 6px;background:#1b1f22;color:var(--orange2);
    font-size:.68rem;font-weight:950;text-transform:uppercase;letter-spacing:.06em
}
.research-row span:nth-child(2){min-width:0}
.research-row strong{display:block;color:var(--text);font-size:.8rem}
.research-row small{
    display:block;margin-top:3px;color:var(--muted);font-size:.67rem;
    font-weight:500;text-transform:none;letter-spacing:0;white-space:nowrap;
    overflow:hidden;text-overflow:ellipsis
}