:root{--bg:#0d0e14;--card:rgba(28,30,42,.72);--line:rgba(255,255,255,.08);--tx:#f2f3f8;--mut:#9a9db3;
--a1:#8b5cf6;--a2:#22d3ee;--a3:#3b82f6;--ok:#34d399;--bad:#f87171;--r:18px}
*{box-sizing:border-box;margin:0}
body{font-family:"Segoe UI",system-ui,-apple-system,Roboto,sans-serif;background:var(--bg);color:var(--tx);min-height:100vh;display:flex}
.bg{position:fixed;inset:0;z-index:-1;background:radial-gradient(600px 400px at 15% 10%,rgba(139,92,246,.22),transparent),radial-gradient(600px 500px at 90% 90%,rgba(34,211,238,.16),transparent),var(--bg);background-size:140% 140%;animation:drift 22s ease-in-out infinite alternate}
@keyframes drift{to{background-position:100% 100%}}
.nav{width:230px;padding:24px 16px;border-right:1px solid var(--line);background:rgba(13,14,20,.6);backdrop-filter:blur(16px);position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:6px}
.brand{display:flex;align-items:center;gap:10px;font-size:1.05rem;margin-bottom:22px;padding:0 8px}
.nav button{background:none;border:0;color:var(--mut);text-align:left;padding:12px 14px;border-radius:12px;font:inherit;cursor:pointer;transition:.2s}
.nav button:hover{background:rgba(255,255,255,.05);color:var(--tx)}
.nav button.active{color:#fff;background:linear-gradient(135deg,rgba(139,92,246,.35),rgba(34,211,238,.18));box-shadow:inset 0 0 0 1px rgba(139,92,246,.45)}
main{flex:1;padding:36px clamp(16px,4vw,48px);max-width:1100px;margin:0 auto;min-width:0}
.view{display:none}.view.active{display:block;animation:in .35s ease}
@keyframes in{from{opacity:0;transform:translateY(8px)}}
h1{font-size:2.1rem;letter-spacing:-.02em}header p{color:var(--mut);margin-top:4px}header{margin-bottom:22px}
.split{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;backdrop-filter:blur(14px)}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-bottom:20px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.stat b{display:block;font-size:1.35rem}.stat span{color:var(--mut);font-size:.82rem}
.lbl{display:block;color:var(--mut);font-size:.85rem;margin:16px 0 6px}.lbl:first-child{margin-top:0}
input,select{width:100%;background:rgba(0,0,0,.35);border:1px solid var(--line);color:var(--tx);border-radius:12px;padding:12px 14px;font:inherit;outline:0;transition:.2s}
input:focus,select:focus{border-color:var(--a2);box-shadow:0 0 0 3px rgba(34,211,238,.15)}
.big{display:flex;align-items:center;gap:8px;background:rgba(0,0,0,.35);border:1px solid var(--line);border-radius:14px;padding:0 16px;transition:.2s}
.big:focus-within{border-color:var(--a2);box-shadow:0 0 0 3px rgba(34,211,238,.15)}
.big input{border:0;background:none;box-shadow:none!important;font-size:2rem;font-weight:600;padding:10px 0}
.big.sm input{font-size:1.3rem}.big span{color:var(--mut);font-weight:600}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.bad{border-color:var(--bad)!important}
.price{text-align:center;padding:32px 22px;border-color:rgba(139,92,246,.4);box-shadow:0 0 60px -20px var(--a1);margin-bottom:16px}
.price small{color:var(--mut)}
.amt{font-size:clamp(3.4rem,9vw,5rem);font-weight:800;letter-spacing:-.03em;background:linear-gradient(135deg,#fff,var(--a2) 60%,var(--a1));-webkit-background-clip:text;color:transparent;line-height:1.1;margin:6px 0}
.price.pulse{animation:glow .6s ease}
@keyframes glow{40%{box-shadow:0 0 90px -5px var(--a2)}}
.profit{color:var(--ok);font-weight:600;margin-bottom:18px}
.btn{background:linear-gradient(135deg,var(--a1),var(--a3));color:#fff;border:0;border-radius:12px;padding:12px 22px;font:inherit;font-weight:600;cursor:pointer;transition:.2s;box-shadow:0 8px 24px -10px var(--a1)}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px -8px var(--a1)}.btn:active{transform:none}
.btn.ghost{background:rgba(255,255,255,.06);box-shadow:none;border:1px solid var(--line)}
.btn.danger{background:var(--bad)}
.btn.ok{background:var(--ok);animation:pop .5s}
@keyframes pop{50%{transform:scale(1.08)}}
.link{background:none;border:0;color:var(--a2);cursor:pointer;font:inherit;font-size:.85rem;margin-top:8px}
.bd summary{cursor:pointer;font-weight:600;list-style:none}
.bd summary::after{content:"▾";float:right;color:var(--mut);transition:.2s}.bd:not([open]) summary::after{transform:rotate(-90deg)}
.bd>div{margin-top:14px}
.br{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--line);color:var(--mut)}
.br b{color:var(--tx)}.br.t{color:var(--tx);font-weight:700;border:0}.br.t b{color:var(--a2)}
.fil h3{font-size:1.3rem}.fil .p{color:var(--a2);font-size:1.15rem;margin:4px 0}.fil .ty{color:var(--mut);margin-bottom:14px}
.acts{display:flex;gap:8px}.acts button{flex:1}
.item{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:12px}
.item h3{margin-bottom:4px}.item .meta{color:var(--mut);font-size:.88rem}.item .v{text-align:right}.item .v b{font-size:1.4rem;display:block}.item .v span{color:var(--ok);font-size:.85rem}
.item select{width:auto}
.tag{display:inline-block;padding:3px 10px;border-radius:99px;font-size:.78rem;background:rgba(255,255,255,.08)}
.empty{text-align:center;color:var(--mut);padding:50px 20px;border:1px dashed var(--line);border-radius:var(--r)}
.set h3{margin-bottom:14px}.set .d{color:var(--mut);font-size:.82rem;margin:-2px 0 6px}
.modal{position:fixed;inset:0;background:rgba(5,6,10,.7);backdrop-filter:blur(6px);display:none;place-items:center;z-index:50;padding:16px}
.modal.open{display:grid}
.box{background:#161823;border:1px solid var(--line);border-radius:20px;padding:26px;width:min(420px,100%);animation:in .25s}
.box h2{margin-bottom:6px}.box p{color:var(--mut)}.box .acts{margin-top:20px}
.toasts{position:fixed;bottom:20px;right:20px;display:flex;flex-direction:column;gap:8px;z-index:60}
.toast{background:#1b1d2a;border:1px solid var(--line);border-left:3px solid var(--ok);padding:12px 18px;border-radius:12px;animation:in .3s;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.toast.err{border-left-color:var(--bad)}
:focus-visible{outline:2px solid var(--a2);outline-offset:2px}
@media(max-width:900px){.grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ===== Polish pass ===== */
[hidden]{display:none!important}
body{overflow-x:hidden}
.grid>*,.card,.big{min-width:0}
/* Number inputs: no native spinners (arrow keys still work), stable sizes */
input[type=number]{-moz-appearance:textfield;appearance:textfield;font-variant-numeric:tabular-nums}
input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
.big{height:64px;overflow:hidden}.big.sm{height:52px}
.big input{width:100%;min-width:0;height:100%;padding:0;outline:none}
.big span{flex:none}.big .pre{margin-right:-6px;color:var(--tx)}
/* Subtle, premium focus state — no oversized outline */
input:focus,input:focus-visible,select:focus-visible{outline:none}
.big:focus-within,select:focus{border-color:rgba(34,211,238,.7);box-shadow:0 0 0 1px rgba(34,211,238,.25),0 0 18px -8px rgba(34,211,238,.6)}
.big input:focus{box-shadow:none}
.d{color:var(--mut);font-size:.8rem;margin-top:6px}
.badge{margin-left:6px;padding:2px 9px;border-radius:99px;font-size:.72rem;background:rgba(139,92,246,.25);color:#c4b5fd}
/* Result card */
.price .amt{font-size:clamp(3rem,6vw,4.2rem);white-space:nowrap;font-variant-numeric:tabular-nums;min-height:1.15em;line-height:1.15}
.price small{letter-spacing:.04em}
.price{min-height:330px;box-shadow:0 0 50px -24px var(--a1)}
.price .profit{margin-bottom:2px;min-height:1.3em}.cost{color:var(--mut);font-size:.9rem;min-height:1.3em}
.status{display:inline-flex;align-items:center;gap:8px;margin:14px 0 18px;min-height:30px;padding:4px 14px;border-radius:99px;font-size:.85rem;font-weight:600;background:rgba(255,255,255,.05)}
.status:empty{visibility:hidden}
.status::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor;box-shadow:0 0 8px currentColor}
.status.cheap{color:var(--ok)}.status.good{color:var(--a2)}.status.high{color:#fbbf24}.status.below{color:var(--bad)}
.price .acts{justify-content:center;flex-wrap:wrap}.price .acts button{flex:0 1 auto}
.br.sep{border-top:1px solid rgba(255,255,255,.2);margin-top:6px;padding-top:14px}
.br.sub{font-size:.85rem}
/* Logo & nav */
.brand{gap:12px}.logo-mark{width:36px;height:36px;flex:none;transition:filter .25s,transform .25s}
.brand:hover .logo-mark{filter:drop-shadow(0 0 8px rgba(139,92,246,.9)) drop-shadow(0 0 14px rgba(34,211,238,.5));transform:rotate(-4deg) scale(1.05)}
.nav button{display:flex;align-items:center;gap:12px}
.nav button svg{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.nav button:hover{transform:translateX(3px)}
.deco{position:fixed;right:-70px;bottom:-60px;width:min(560px,70vw);color:#a78bfa;opacity:.07;stroke-width:1.2;z-index:-1;pointer-events:none}
@media(min-width:701px) and (max-width:1000px){
 .nav{width:76px;align-items:center;padding:24px 10px}.nav .brand{padding:0}.brand b,.nav button span{display:none}
 .nav button{padding:13px}.nav button:hover{transform:none}
}

/* ===== v2: components, mobile navigation, responsive layout ===== */
:root{color-scheme:dark}
option{background:#161823;color:var(--tx)}
h2{font-size:1.1rem}
.top,.scrim{display:none}
.nav button{min-height:46px}
.btn{min-height:44px}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
select{min-height:48px;text-overflow:ellipsis;cursor:pointer}
input.bad{border-color:var(--bad)}
.chead{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:4px}
.link{min-height:36px;padding:0}.chead .link{margin:0}
.badge{background:rgba(255,255,255,.08);color:var(--mut)}.badge.custom{background:rgba(251,191,36,.16);color:#fbbf24}
.price.empty .profit{color:var(--tx)}.price.empty .cost{max-width:32ch;margin:6px auto 0}.price.empty .amt{opacity:.5}
.sbar{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px}
.pill{padding:6px 12px;border-radius:99px;background:rgba(251,191,36,.14);color:#fbbf24;font-size:.85rem;font-weight:600}
.set .lbl{margin-top:0}
.list{display:grid;gap:12px}
.item{flex-direction:column;align-items:stretch;gap:12px;margin:0}
.item .ih{display:flex;justify-content:space-between;align-items:flex-start;gap:14px}
.item h3,.fil h3{min-width:0;overflow-wrap:anywhere}.item .v{flex:none}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{padding:4px 10px;border-radius:99px;background:rgba(255,255,255,.07);font-size:.82rem;color:var(--mut);max-width:100%;overflow-wrap:anywhere}
.item .acts{flex-wrap:wrap}.item .acts select{flex:1 1 150px;width:auto}.item .acts .btn{flex:0 1 auto}
.fil{display:flex;flex-direction:column}.fil .acts{margin-top:14px}
.box{max-height:calc(100dvh - 32px);overflow:auto}.box .lbl{margin-top:16px}.box h2+p{margin-bottom:4px}
.toasts{max-width:calc(100vw - 40px)}
@media(max-width:700px){
 body{flex-direction:column}
 .top{display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:30;height:60px;padding:0 12px;background:rgba(13,14,20,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
 .top .brand{margin:0;padding:0}
 .menu{width:44px;height:44px;display:grid;place-items:center;background:none;border:1px solid var(--line);border-radius:12px;color:var(--tx);cursor:pointer}
 .menu svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
 .nav{position:fixed;top:0;left:0;bottom:0;width:min(290px,84vw);height:100dvh;z-index:60;padding:76px 14px 20px;background:#11131c;border:0;border-right:1px solid var(--line);transform:translateX(-102%);visibility:hidden;transition:transform .25s,visibility .25s}
 .menu-open .nav{transform:none;visibility:visible}
 .nav .brand{display:none}
 .nav button{min-height:52px;font-size:1rem;padding:12px 16px}.nav button:hover{transform:none}
 .scrim{display:block;position:fixed;inset:0;z-index:50;background:rgba(5,6,10,.65);opacity:0;pointer-events:none;transition:opacity .25s}
 .menu-open .scrim{opacity:1;pointer-events:auto}
 main{padding:20px 16px calc(40px + env(safe-area-inset-bottom))}
 h1{font-size:1.65rem}
 .card{padding:18px}
 .stats{grid-template-columns:repeat(2,1fr)}.stats .stat:last-child:nth-child(odd){grid-column:1/-1}
 .big{height:60px}.big input{font-size:1.7rem}.big.sm{height:54px}.big.sm input{font-size:1.25rem}
 .row{gap:10px}
 .price{min-height:0;padding:24px 16px}.price .acts button{flex:1 1 100%;min-height:48px}
 .split .btn,.sbar .btn{width:100%;flex:1 1 100%}.sbar .btn{min-height:48px}
 .item .ih{flex-direction:column;gap:6px}.item .v{text-align:left}
 .fil .acts .btn,.box .acts .btn{min-height:48px}
 .toasts{left:16px;right:16px;bottom:16px;max-width:none}.deco{opacity:.05}
}