:root{
  color-scheme:dark;
  --bg:#0a1020;--surface:#111a2d;--surface2:#17233b;--text:#eef4ff;--muted:#9eb0ca;
  --line:#293954;--accent:#ff4d38;--accent2:#ffb23f;--good:#5ce1a3;--shadow:0 20px 50px rgba(0,0,0,.28);
  --radius:22px;--max:1240px
}
:root[data-theme="light"]{color-scheme:light;--bg:#f3f6fb;--surface:#fff;--surface2:#edf2f8;--text:#132033;--muted:#5b6b80;--line:#d9e1eb;--shadow:0 18px 45px rgba(31,48,72,.12)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 10% -10%,rgba(255,77,56,.16),transparent 34%),var(--bg);color:var(--text);font:16px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
button,input,select{font:inherit}
button,a{touch-action:manipulation}
a{color:inherit}
.skip-link{position:fixed;left:12px;top:-80px;background:var(--accent);padding:10px 14px;z-index:100;border-radius:10px}.skip-link:focus{top:12px}
.topbar{position:sticky;top:0;z-index:30;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:14px max(18px,calc((100vw - var(--max))/2));background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:linear-gradient(145deg,var(--accent),var(--accent2));font-size:26px;font-weight:900;color:white;box-shadow:0 8px 24px rgba(255,77,56,.3)}.brand span:last-child{display:grid}.brand small{color:var(--muted);font-size:12px}
.top-actions,.hero-actions,.inline-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
main,footer{width:min(var(--max),calc(100% - 28px));margin:auto}
.hero{min-height:390px;display:grid;grid-template-columns:1.25fr .75fr;gap:42px;align-items:center;padding:64px 8px 42px}.hero h1{font-size:clamp(2.35rem,6vw,5rem);line-height:.98;letter-spacing:-.055em;margin:.1em 0 .28em;max-width:900px}.hero p:not(.eyebrow){max-width:720px;color:var(--muted);font-size:clamp(1rem,2vw,1.25rem)}
.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:.76rem;font-weight:850;color:var(--accent2);margin:0 0 6px}
.hero-card,.panel{background:linear-gradient(145deg,color-mix(in srgb,var(--surface) 94%,white 6%),var(--surface));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:28px;display:grid;gap:8px;text-align:center}.hero-card strong{font-size:2rem}.hero-card small{color:var(--muted)}
.button,.icon-button,.segmented button{border:1px solid var(--line);border-radius:13px;background:var(--surface2);color:var(--text);font-weight:800;cursor:pointer;min-height:44px;padding:10px 15px;text-decoration:none;display:inline-grid;place-items:center}.button.primary{background:linear-gradient(135deg,var(--accent),#e43124);border-color:transparent;color:white}.button.ghost:hover,.icon-button:hover,.segmented button:hover{border-color:var(--accent)}.icon-button{width:44px;padding:0;font-size:20px}.hidden{display:none!important}
.panel{padding:clamp(18px,3vw,30px);margin-bottom:22px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}.section-heading h2{font-size:clamp(1.55rem,3vw,2.35rem);line-height:1.05;margin:0}
.segmented{display:flex;gap:5px;padding:5px;background:var(--surface2);border-radius:16px;border:1px solid var(--line);overflow:auto}.segmented button{white-space:nowrap;border:0;background:transparent}.segmented button.active{background:var(--accent);color:white}
.resistor-stage{min-height:230px;display:flex;align-items:center;justify-content:center;padding:30px 10px;background:radial-gradient(circle,var(--surface2),transparent 67%);overflow:hidden}.lead{height:12px;background:linear-gradient(#dbe4ec,#758394,#edf4f7);flex:1;max-width:250px;min-width:45px;border-radius:6px}
.resistor-body{position:relative;width:min(580px,66vw);height:128px;border-radius:38% 38% 35% 35%/28% 28% 40% 40%;background:linear-gradient(#d5b783,#a67b45 44%,#cda56d 70%,#80603d);box-shadow:inset 0 8px 13px rgba(255,255,255,.22),inset 0 -10px 16px rgba(44,23,4,.33),0 18px 30px rgba(0,0,0,.25);display:flex;align-items:stretch;justify-content:center;gap:clamp(12px,2.5vw,34px);padding:0 clamp(34px,6vw,70px)}
.color-band{width:clamp(18px,3.2vw,32px);height:100%;box-shadow:inset 5px 0 rgba(255,255,255,.18),inset -5px 0 rgba(0,0,0,.2)}
.band-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:20px 0}.band-control{display:grid;gap:7px;padding:14px;border-radius:16px;background:var(--surface2);border:1px solid var(--line)}.band-control label{font-size:.8rem;color:var(--muted);font-weight:800}.band-control select{width:100%}
select,input{width:100%;min-height:46px;background:var(--surface2);border:1px solid var(--line);border-radius:12px;color:var(--text);padding:10px 12px;outline:none}select:focus,input:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 20%,transparent)}
.result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.result-card{background:var(--surface2);border:1px solid var(--line);padding:17px;border-radius:16px;display:grid;align-content:start;gap:4px}.result-card span,.result-card small{color:var(--muted)}.result-card strong{font-size:1.35rem}.primary-result{background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 24%,var(--surface2)),var(--surface2))}
.two-column{display:grid;grid-template-columns:1fr 1fr;gap:22px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.form-grid label,label{display:grid;gap:6px;color:var(--muted);font-size:.86rem;font-weight:750}.form-submit{align-self:end}.compact{margin-top:12px}
.output-box{min-height:84px;margin-top:16px;padding:16px;border:1px dashed var(--line);border-radius:15px;background:color-mix(in srgb,var(--surface2) 70%,transparent)}.output-box:empty:before{content:"Results will appear here.";color:var(--muted)}.output-box strong{font-size:1.25rem}.output-box .chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.chip{padding:7px 10px;background:var(--surface2);border:1px solid var(--line);border-radius:999px;font-size:.82rem}
.muted{color:var(--muted)}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:15px}table{width:100%;border-collapse:collapse;min-width:720px}th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}th{position:sticky;top:0;background:var(--surface2)}.swatch{display:inline-block;width:20px;height:20px;border-radius:50%;vertical-align:middle;margin-right:9px;border:1px solid rgba(127,127,127,.5)}
.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.info-grid .panel h3{margin-top:0}.info-grid .panel p{color:var(--muted)}
.resource-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.resource-list a{display:grid;text-decoration:none;padding:16px;background:var(--surface2);border:1px solid var(--line);border-radius:15px}.resource-list a:hover{border-color:var(--accent)}.resource-list span{color:var(--muted)}
footer{padding:35px 5px 50px;display:grid;gap:3px;color:var(--muted)}footer strong{color:var(--text)}
.mini-resistor{display:flex;align-items:center;justify-content:center;height:80px}.mini-resistor span{width:55px;height:7px;background:#aab4c0}.mini-resistor i{height:64px;width:18px}.mini-resistor i:first-of-type{margin-left:0}.c-yellow{background:#f4d529}.c-violet{background:#7d3db5}.c-red{background:#d4302f}.c-gold{background:#cf9d2b}
.toast{position:fixed;left:50%;bottom:max(22px,env(safe-area-inset-bottom));translate:-50% 20px;background:#070b12;color:white;padding:12px 16px;border-radius:12px;opacity:0;pointer-events:none;transition:.25s;z-index:50;box-shadow:var(--shadow)}.toast.show{opacity:1;translate:-50% 0}
@media(max-width:900px){.hero{grid-template-columns:1fr}.hero-card{display:none}.two-column,.info-grid{grid-template-columns:1fr 1fr}.result-grid{grid-template-columns:1fr 1fr}.section-heading{align-items:flex-start;flex-direction:column}.resource-list{grid-template-columns:1fr}}
@media(max-width:620px){main,footer{width:min(100% - 18px,var(--max))}.topbar{padding:10px}.brand small{display:none}.hero{padding:38px 6px 25px;min-height:auto}.hero h1{font-size:2.55rem}.panel{border-radius:18px;padding:16px}.two-column,.info-grid,.result-grid,.form-grid{grid-template-columns:1fr}.segmented{width:100%}.segmented button{flex:1;padding-inline:9px}.resistor-stage{min-height:170px;padding-inline:0}.resistor-body{height:95px;width:72vw;padding-inline:24px;gap:15px}.lead{min-width:25px}.resource-list{grid-template-columns:1fr}.top-actions .button{display:none}}
@media(display-mode:standalone){.topbar{padding-top:max(12px,env(safe-area-inset-top))}}

.workspace-tabs{position:sticky;top:73px;z-index:24;display:flex;gap:8px;margin:14px 0 0;padding:8px;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:17px;box-shadow:var(--shadow)}
.workspace-tab{flex:1;min-height:48px;border:1px solid transparent;border-radius:12px;background:transparent;color:var(--muted);font-weight:850;cursor:pointer}.workspace-tab.active{background:linear-gradient(135deg,var(--accent),#e43124);color:#fff}.workspace[hidden]{display:none!important}
.transistor-symbol{font-size:1.2rem;font-weight:900;line-height:1.2;padding:18px;border:2px solid var(--line);border-radius:50%;width:130px;height:130px;display:grid;place-content:center;margin:auto;background:var(--surface2)}.transistor-symbol span{color:var(--accent2)}
.count-badge,.package-badge,.device-type{display:inline-flex;align-items:center;border:1px solid var(--line);background:var(--surface2);border-radius:999px;padding:6px 10px;font-size:.78rem;font-weight:850}.device-type{color:var(--accent2)}
.device-filters{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:12px;margin-bottom:18px}.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.device-card{display:grid;align-content:start;gap:12px;background:var(--surface2);border:1px solid var(--line);border-radius:18px;padding:17px}.device-card:hover{border-color:var(--accent)}.device-card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.device-card h3{font-size:1.55rem;margin:4px 0 0}.device-card p{margin:0;color:var(--muted)}.spec-list{display:grid;gap:8px;margin:0}.spec-list div{display:grid;grid-template-columns:90px 1fr;gap:10px;border-top:1px solid var(--line);padding-top:8px}.spec-list dt{color:var(--muted);font-size:.8rem;font-weight:800}.spec-list dd{margin:0;font-size:.88rem;font-weight:750}.device-compare-btn{margin-top:auto}.empty-state{grid-column:1/-1;padding:35px;text-align:center;border:1px dashed var(--line);border-radius:16px;color:var(--muted)}
.compare-controls{display:grid;grid-template-columns:1fr auto 1fr auto;gap:12px;align-items:end}.swap-mark{font-size:2rem;padding-bottom:4px;color:var(--accent2)}.compare-output{display:grid;gap:10px;margin-top:20px}.compat-summary{display:flex;justify-content:space-between;gap:16px;padding:17px;border-radius:15px;border:1px solid}.compat-summary.candidate{background:color-mix(in srgb,var(--good) 14%,var(--surface2));border-color:color-mix(in srgb,var(--good) 45%,var(--line))}.compat-summary.rejected{background:color-mix(in srgb,var(--accent) 12%,var(--surface2));border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}.compat-row{display:grid;grid-template-columns:36px 1fr;gap:10px;padding:13px;border-radius:14px;background:var(--surface2);border:1px solid var(--line)}.compat-row>span{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;font-weight:900}.compat-row.pass>span{background:color-mix(in srgb,var(--good) 25%,transparent);color:var(--good)}.compat-row.warn>span{background:color-mix(in srgb,var(--accent2) 25%,transparent);color:var(--accent2)}.compat-row.fail>span{background:color-mix(in srgb,var(--accent) 25%,transparent);color:var(--accent)}.compat-row p{margin:2px 0 0;color:var(--muted)}.datasheet-note{padding:14px;border-left:4px solid var(--accent2);background:var(--surface2);color:var(--muted)}.warning-panel{border-color:color-mix(in srgb,var(--accent2) 55%,var(--line))}.warning-panel h3{margin-top:0}.warning-panel p{color:var(--muted)}
@media(max-width:1000px){.device-grid{grid-template-columns:1fr 1fr}.device-filters{grid-template-columns:1fr 1fr}.compare-controls{grid-template-columns:1fr 1fr}.swap-mark{display:none}}
@media(max-width:620px){.workspace-tabs{top:64px;margin-top:8px;padding:5px}.workspace-tab{font-size:.82rem}.device-grid,.device-filters,.compare-controls{grid-template-columns:1fr}.compat-summary{display:grid}.transistor-info{grid-template-columns:1fr}.device-card h3{font-size:1.35rem}}