/* examscorecalc.com — design system. Light, fast, student-friendly, accessible. */
:root{
  --bg:#f7f8fb; --card:#ffffff; --ink:#16202e; --ink2:#41506a; --mut:#6b7a92;
  --line:#e3e8f0; --line2:#eef1f6;
  --brand:#2f6df0; --brand-d:#1f57cf; --brand-soft:#eaf1fe;
  --top:#11a36b; --good:#2f6df0; --mid:#e0a325; --low:#e0604f;
  --top-soft:#e6f6ef; --good-soft:#eaf1fe; --mid-soft:#fcf3df; --low-soft:#fdecea;
  --radius:14px; --shadow:0 1px 2px rgba(20,32,46,.04),0 8px 24px rgba(20,32,46,.06);
  --mono:'SF Mono',ui-monospace,Menlo,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
a{color:var(--brand-d);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.25;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:30px;font-weight:800;margin:0 0 6px}
h2{font-size:22px;font-weight:700;margin:34px 0 12px}
h3{font-size:16px;font-weight:700;margin:0 0 8px}
p{color:var(--ink2)}
.sub{color:var(--mut);font-size:16px;margin:0 0 4px}
.tnum{font-variant-numeric:tabular-nums}

/* header / nav */
.site-head{position:sticky;top:0;z-index:40;background:rgba(247,248,251,.86);backdrop-filter:saturate(1.6) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;height:60px}
.brand{font-weight:800;font-size:18px;letter-spacing:-.03em;color:var(--ink)}
.brand b{color:var(--brand)}
.nav .links{margin-left:auto;display:flex;gap:16px;flex-wrap:wrap}
.nav .links a{color:var(--ink2);font-weight:600;font-size:14.5px}
.nav .links a:hover{color:var(--brand-d);text-decoration:none}

/* hero */
.hero{padding:34px 0 8px}
.stamp{display:inline-block;font:600 11.5px/1 var(--mono);color:var(--top);background:var(--top-soft);border:1px solid #bfe6d3;border-radius:20px;padding:6px 11px;margin-bottom:14px}
.crumbs{font-size:13px;color:var(--mut);margin:0 0 12px}
.crumbs a{color:var(--mut)}

/* calculator */
.calc-shell{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin:8px 0 6px}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:760px){.calc-grid{grid-template-columns:1fr;gap:18px}}
.calc-hint{font-size:14px;color:var(--mut);margin:0 0 14px}
.ctl{margin:0 0 18px}
.ctl-top{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.ctl-top label{font-weight:600;font-size:14.5px;color:var(--ink);flex:1}
.ctl-top input[type=number]{width:78px;font:700 16px var(--mono);text-align:center;border:1px solid var(--line);border-radius:9px;padding:7px 8px;color:var(--ink);background:#fff}
.ctl-top input[type=number]:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.ctl-max{font:600 12px var(--mono);color:var(--mut)}
input[type=range]{width:100%;height:26px;-webkit-appearance:none;background:transparent;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:7px;border-radius:6px;background:linear-gradient(90deg,var(--brand-soft),#dce7fb)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;margin-top:-8px;border-radius:50%;background:var(--brand);border:3px solid #fff;box-shadow:0 1px 4px rgba(20,32,46,.25)}
input[type=range]::-moz-range-track{height:7px;border-radius:6px;background:#dce7fb}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--brand);border:3px solid #fff}
input[type=range]:focus-visible{outline:2px solid var(--brand);outline-offset:4px;border-radius:6px}

/* result */
.result{align-self:start;position:sticky;top:76px}
@media(max-width:760px){.result{position:static}}
.score-badge{display:flex;align-items:baseline;justify-content:center;gap:8px;border-radius:var(--radius);padding:22px;margin-bottom:14px;border:1px solid var(--line)}
.score-badge.wide .score-num{font-size:46px}
.score-num{font:800 64px/1 var(--mono);letter-spacing:-.03em}
.score-of{font:700 18px var(--mono);color:var(--mut)}
.band-top{background:var(--top-soft);border-color:#bfe6d3}.band-top .score-num{color:var(--top)}
.band-good{background:var(--good-soft);border-color:#cdddfb}.band-good .score-num{color:var(--good)}
.band-mid{background:var(--mid-soft);border-color:#f0dca6}.band-mid .score-num{color:#b9821a}
.band-low{background:var(--low-soft);border-color:#f4cabf}.band-low .score-num{color:var(--low)}
.score-line{text-align:center;font-size:14.5px;margin:0 0 14px}
.solver h3,.dist h3{font-size:14px}
table.solve{width:100%;border-collapse:collapse;font-size:13.5px;margin:6px 0}
table.solve th{text-align:left;font:600 11px var(--mono);text-transform:uppercase;letter-spacing:.04em;color:var(--mut);padding:6px 8px;border-bottom:1px solid var(--line)}
table.solve td{padding:7px 8px;border-bottom:1px solid var(--line2);color:var(--ink2)}
table.solve tr.hit td{color:var(--top);font-weight:600}
.solver-note,.dist-sub{font-size:12px;color:var(--mut);margin-top:4px}
.dist{margin-top:16px}
.db-row{display:flex;align-items:center;gap:9px;margin:4px 0;font:13px var(--mono)}
.db-row.on{font-weight:700}
.db-k{width:14px;color:var(--ink2)}
.db-bar{flex:1;background:var(--line2);border-radius:5px;height:14px;overflow:hidden}
.db-bar i{display:block;height:100%;background:var(--brand);border-radius:5px}
.db-row.on .db-bar i{background:var(--top)}
.db-v{width:38px;text-align:right;color:var(--mut)}
.share{margin-top:16px;display:flex;align-items:center;gap:10px}
.share-btn{font:600 13.5px var(--sans);background:var(--ink);color:#fff;border:0;border-radius:9px;padding:9px 14px;cursor:pointer}
.share-btn:hover{background:#0d1622}
.share-msg{font-size:13px;color:var(--top);font-weight:600}

/* content blocks */
.section{margin:30px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.note-box{background:var(--brand-soft);border:1px solid #cdddfb;border-radius:12px;padding:14px 16px;font-size:14px;color:var(--ink2);margin:14px 0}
.note-box b{color:var(--ink)}
table.data{width:100%;border-collapse:collapse;font-size:14px}
table.data th{text-align:left;font:600 12px var(--mono);text-transform:uppercase;letter-spacing:.04em;color:var(--mut);padding:9px 10px;border-bottom:1px solid var(--line)}
table.data td{padding:9px 10px;border-bottom:1px solid var(--line2);color:var(--ink2)}
.faq dt{font-weight:700;margin:16px 0 4px;color:var(--ink)}
.faq dd{color:var(--ink2);margin:0}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin:10px 0}
.tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 15px;box-shadow:var(--shadow);transition:border-color .15s,transform .15s}
.tile:hover{border-color:var(--brand);transform:translateY(-1px);text-decoration:none}
.tile .t-name{font-weight:700;color:var(--ink);font-size:15px}
.tile .t-sub{font-size:12.5px;color:var(--mut);margin-top:3px}
.pillrow{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}
.pill{font:600 12px var(--mono);color:var(--ink2);background:#fff;border:1px solid var(--line);border-radius:20px;padding:5px 11px}

footer{margin-top:50px;border-top:1px solid var(--line);background:#fff}
footer .wrap{padding:26px 18px 40px}
.foot-links{display:flex;flex-wrap:wrap;gap:14px;margin:8px 0}
.foot-links a{color:var(--ink2);font-size:13.5px}
.disc{font-size:12.5px;color:var(--mut);line-height:1.6;margin-top:12px;max-width:760px}
@media(max-width:560px){h1{font-size:25px}h2{font-size:19px}.score-num{font-size:52px}.calc-shell{padding:16px}}

/* ============================================================
   v2 design polish (workflow changeset, 2026-06-20)
   ============================================================ */
:root{
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:20px; --s6:24px; --s7:32px; --s8:40px; --s9:56px;
  --sans:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
:root{
  --mut:#5a6a82;
  --top-ink:#0a7d52; --mid:#cf8f1c; --mid-ink:#9a6a10; --brand-ink:#1f57cf;
}
.stamp{color:var(--top-ink)}
.share-msg{color:var(--top-ink)}
table.solve tr.hit td{color:var(--top-ink);font-weight:600}
.brand b{color:var(--brand-ink)}
.band-top .score-num{color:var(--top-ink)}
.band-good .score-num{color:#1f57cf}
.band-mid .score-num{color:var(--mid-ink)}
.band-low .score-num{color:#c63d2c}
.score-num{font:800 64px/1 var(--sans);letter-spacing:-.04em;font-variant-numeric:tabular-nums lining-nums;font-feature-settings:"tnum" 1,"lnum" 1;-webkit-font-smoothing:antialiased}
.score-of{font:700 18px/1 var(--sans);font-variant-numeric:tabular-nums;color:var(--mut)}
.score-badge.wide .score-num{font-size:46px}
.db-row,.db-v,table.solve td,.ctl-top input[type=number],.score-line{font-variant-numeric:tabular-nums}
h1{font-size:32px;font-weight:800;letter-spacing:-.025em;margin:0 0 var(--s2);text-wrap:balance}
h2{font-size:21px;font-weight:700;letter-spacing:-.02em;margin:var(--s7) 0 var(--s3);text-wrap:balance}
h3{font-size:15px;font-weight:700;letter-spacing:-.01em}
p{font-size:16px;line-height:1.62;color:var(--ink2);text-wrap:pretty}
.sub{font-size:18px;line-height:1.5;font-weight:450;color:var(--ink2);margin:0 0 var(--s2);max-width:54ch;text-wrap:pretty}
@media(max-width:560px){h1{font-size:26px}.sub{font-size:16px}h2{font-size:19px}}
.hero{padding:var(--s7) 0 0}
.hero .sub{margin:0 0 var(--s2)}
.calc-shell{margin:var(--s6) 0 0;padding:var(--s5)}
.card{padding:var(--s5)}
.note-box{padding:var(--s3) var(--s4)}
.tile{padding:var(--s4)}
.section{margin:var(--s8) 0}
.section>h2:first-child{margin-top:0}
.score-line{margin:0 0 var(--s4)}
.dist{margin-top:var(--s5)}
.share{margin-top:var(--s5)}
footer{margin-top:var(--s9)}
footer .wrap{padding:var(--s6) var(--s4) var(--s8)}
.calc-shell{position:relative;border-radius:18px;overflow:hidden;border-color:#d8e2f4;
  background-image:linear-gradient(180deg,#fff,#fcfdff);
  box-shadow:0 2px 4px rgba(20,32,46,.05),0 18px 44px -12px rgba(47,109,240,.22);padding-top:26px}
.calc-shell::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--brand),#6aa0ff)}
.score-badge{position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:center;gap:2px;
  padding:30px 22px 34px;border-width:2px;border-radius:18px;
  background-image:linear-gradient(180deg,rgba(255,255,255,.7),rgba(255,255,255,0));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 1px 2px rgba(20,32,46,.05),0 14px 30px -12px rgba(20,32,46,.18)}
.score-badge::before{content:"YOUR ESTIMATED SCORE";font:700 10.5px/1 var(--mono);letter-spacing:.14em;color:var(--mut);margin-bottom:4px}
.score-badge::after{content:"examscorecalc.com";position:absolute;left:0;right:0;bottom:10px;text-align:center;font:600 10px/1 var(--mono);letter-spacing:.06em;color:var(--mut);opacity:.7}
.band-top.score-badge{box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 14px 34px -12px rgba(10,125,82,.45)}
.band-good.score-badge{box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 14px 34px -12px rgba(47,109,240,.42)}
.band-mid.score-badge{box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 14px 34px -12px rgba(207,143,28,.42)}
.band-low.score-badge{box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 14px 34px -12px rgba(198,61,44,.4)}
.db-row{display:flex;align-items:center;gap:11px;margin:6px 0;font:13px/1 var(--mono)}
.db-bar{flex:1;height:18px;background:var(--line2);border-radius:6px;overflow:hidden;box-shadow:inset 0 1px 2px rgba(20,32,46,.06)}
.db-bar i{display:block;height:100%;min-width:4px;border-radius:6px;background-image:linear-gradient(90deg,#5b8af5,var(--brand));transition:width .5s cubic-bezier(.2,.8,.2,1)}
.db-v{width:42px;text-align:right;color:var(--ink2);font-weight:600}
.db-k{font-weight:700}
.db-row.on{background:var(--top-soft);margin-left:-8px;margin-right:-8px;padding:3px 8px;border-radius:8px}
.db-row.on .db-bar i{background-image:linear-gradient(90deg,#3cc78d,var(--top))}
.db-row.on .db-k{color:var(--top-ink)}
.share-btn{font:700 14.5px var(--sans);background:var(--brand);color:#fff;border:0;border-radius:11px;padding:12px 18px;cursor:pointer;box-shadow:0 6px 16px rgba(47,109,240,.28);transition:background .15s ease,transform .08s ease}
.share-btn:hover{background:var(--brand-ink)}
.share-btn:active{transform:scale(.96)}
.ctl-top input[type=number]:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,109,240,.18)}
@media(max-width:560px){.share{flex-direction:column;align-items:stretch;gap:8px}.share-btn{width:100%;min-height:48px;font-size:15px;justify-content:center}.share-msg{text-align:center}}
input[type=range]::-webkit-slider-thumb{transition:transform .12s ease,box-shadow .15s ease}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.18)}
input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 1px 4px rgba(20,32,46,.25),0 0 0 6px rgba(47,109,240,.18)}
input[type=range]::-moz-range-thumb{transition:transform .12s ease,box-shadow .15s ease}
input[type=range]:active::-moz-range-thumb{transform:scale(1.18)}
input[type=range]:focus-visible::-moz-range-thumb{box-shadow:0 1px 4px rgba(20,32,46,.25),0 0 0 6px rgba(47,109,240,.18)}
@keyframes scorePop{0%{transform:scale(.9);opacity:.3}60%{transform:scale(1.03)}100%{transform:scale(1);opacity:1}}
.score-num{display:inline-block;animation:scorePop .26s cubic-bezier(.2,.8,.2,1) both;will-change:transform}
.score-line{text-align:center;font-size:15px;color:var(--ink2)}
.score-line b{color:var(--ink)}
.tile{transition:border-color .15s,transform .15s,box-shadow .15s}
.tile:hover{box-shadow:0 4px 14px rgba(20,32,46,.10)}
.tile:active{transform:scale(.985)}
table.solve th,table.data th{letter-spacing:.06em}
.nav .links a{padding:6px 11px;border-radius:9px;line-height:1;transition:background .15s,color .15s}
.nav .links a:hover{background:var(--brand-soft);color:var(--brand-ink);text-decoration:none}
.nav .links a[aria-current="page"]{background:var(--brand-soft);color:var(--brand-ink)}
.site-head{position:relative}
.site-head::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;background:linear-gradient(90deg,var(--top) 0 25%,var(--good) 25% 50%,var(--mid) 50% 75%,var(--low) 75% 100%);opacity:.9}
@media(max-width:760px){
  .calc-grid{display:flex;flex-direction:column}
  .calc-inputs{order:1}
  .result{order:-1;position:sticky;top:68px;z-index:30}
  .result .score-num{font-size:60px}
  .calc-shell,.section{scroll-margin-top:72px}
  .result{padding-bottom:calc(12px + env(safe-area-inset-bottom))}
  input[type=range]{height:44px}
  input[type=range]::-webkit-slider-thumb{width:30px;height:30px;margin-top:-12px}
  input[type=range]::-moz-range-thumb{width:30px;height:30px}
  input[type=range]::-webkit-slider-runnable-track{height:8px}
  input[type=range]::-moz-range-track{height:8px}
  .ctl-top input[type=number]{width:88px;min-height:44px;font-size:18px;padding:8px}
  .ctl{margin-bottom:22px}
}
/* engine-rendered states & helpers */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.score-figure{display:flex;align-items:baseline;justify-content:center;gap:8px}
.result-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;min-height:200px;padding:24px;border:1px dashed var(--line);border-radius:18px;background:#fcfdff}
.re-num{font:800 48px/1 var(--sans);color:#c6d0e0}
.result-empty p{color:var(--mut);font-size:14.5px;max-width:34ch;margin:0}
.verdict{text-align:center;font-size:14.5px;font-weight:600;color:var(--ink);margin:0 0 var(--s4)}
.solver-frame{font-size:12.5px;color:var(--mut);margin:0 0 6px}
.goal-line{text-align:center;font-size:14.5px;color:var(--ink2);margin:0 0 var(--s4)}
.goal-line b{color:var(--brand-ink)}
.score-caveat{font-size:12px;color:var(--mut);text-align:center;margin-top:var(--s4)}
.score-caveat a{color:var(--brand-ink)}
.brand{display:inline-flex;align-items:center;gap:9px;letter-spacing:-.02em;font-weight:800}
.brand-mark{width:26px;height:26px;border-radius:8px;flex:none;display:block}
/* reduced-motion guard — keep LAST */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .db-row.on{transform:none}
}