/**
 * Grade Calculator Core — calculator styles v1.0.0
 * Playful game-like visual language shared by all six calculators.
 */

:root{
  --ink:#10372b; --bg:#edf9f0; --card:#fff;
  --mint:#16c97c; --sky:#2fbfae; --sun:#ffd23f; --pink:#ff6fb5; --tang:#ffa24c;
  --mut:#10372bcc; --r:22px;
  --sh:0 12px 30px rgba(16,55,43,.10);
}

/* ---------- calculator card ---------- */
.calc{
  font-family:ui-rounded,"Nunito","Arial Rounded MT Bold",system-ui,sans-serif;
  background:var(--card); color:var(--ink); font-weight:700; line-height:1.45;
  border:2px solid var(--ink); border-radius:var(--r); box-shadow:var(--sh);
  padding:20px; max-width:600px; width:100%; margin:24px auto;
}
.calc *,.calc *::before,.calc *::after{box-sizing:border-box}
.calc h2,.calc p{margin:0}
.calc :focus{outline:none}
.calc :focus-visible{outline:3px solid var(--pink);outline-offset:3px;border-radius:8px}
.calc-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:4px}
.calc-head h2{font-size:1.25rem;font-weight:900;letter-spacing:-.3px}
.lvl{background:var(--mint);color:#10372b;border:2px solid var(--ink);border-radius:999px;padding:3px 13px;font-size:12.5px;font-weight:900;white-space:nowrap}
.hint{font-size:13.5px;color:var(--mut);margin-bottom:12px}
.gq-rows{display:grid;gap:9px}
.row{display:grid;gap:8px;grid-template-columns:1fr 12px 1fr 44px;align-items:center;animation:pop .25s ease}
@keyframes pop{from{transform:scale(.93);opacity:0}}
.row .nm{grid-column:1/-1}
.row input{font:inherit;font-weight:800;width:100%;min-width:0;padding:11px 10px;border:2px solid var(--ink);border-radius:13px;background:transparent;color:var(--ink);text-align:center;min-height:52px}
.row input::placeholder{color:var(--mut);font-weight:600;opacity:.7}
.row input:focus{border-color:var(--mint);box-shadow:0 0 0 4px #16c97c33}
.row .sl2{text-align:center;font-weight:900;color:var(--mut)}
.x{width:44px;height:44px;border-radius:12px;border:2px solid transparent;background:none;font-size:17px;font-weight:900;color:var(--pink);cursor:pointer;display:grid;place-items:center}
.x:hover{border-color:var(--pink);background:#ff6fb514}

/* ---------- power-ups ---------- */
.pw{display:flex;gap:8px;flex-wrap:wrap;margin:13px 0 4px}
.pw button{font:inherit;font-weight:800;font-size:13.5px;padding:8px 15px;min-height:44px;border-radius:999px;border:2px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;transition:transform .12s,background .12s}
.pw button.on{background:var(--mint);color:#10372b;transform:scale(1.05)}
.pw button:hover{transform:translateY(-1px)}

/* ---------- goal row ---------- */
.goal{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin:10px 0 2px;font-size:14px;font-weight:800}
.goal label{display:flex;align-items:center;gap:8px}
.goal select,.goal input{font:inherit;font-weight:800;padding:8px 10px;border:2px solid var(--ink);border-radius:12px;background:transparent;color:var(--ink);width:84px;min-height:44px}
.goal select:focus,.goal input:focus{border-color:var(--mint);box-shadow:0 0 0 4px #16c97c33}

/* ---------- buttons ---------- */
.acts{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.btn{font:inherit;font-weight:900;border:2px solid var(--ink);border-radius:15px;padding:13px 20px;cursor:pointer;color:var(--ink);background:var(--card);box-shadow:0 4px 0 var(--ink);transition:transform .1s,box-shadow .1s;min-height:52px;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn:hover{transform:translateY(-2px);box-shadow:0 6px 0 var(--ink)}
.btn:active{transform:translateY(4px);box-shadow:0 0 0 var(--ink)}
.add{flex:1}
.go{background:var(--sun);font-size:1.05rem;flex:2}

/* ---------- result ---------- */
.result{display:none;margin-top:18px;padding-top:18px;border-top:2px dashed rgba(16,55,43,.25);text-align:center}
.result.on{display:block;animation:boom .5s cubic-bezier(.3,1.6,.5,1)}
@keyframes boom{from{transform:scale(.88);opacity:0}}
.badge{width:104px;height:104px;margin:0 auto 8px;border-radius:50%;background:var(--mint);border:3px solid var(--ink);display:grid;place-items:center;font-size:48px;font-weight:900;color:#10372b;box-shadow:var(--sh)}
.badge.mini{width:76px;height:76px;font-size:36px}
.stars{font-size:27px;letter-spacing:5px;color:var(--ink)}
.stars s{text-decoration:none;opacity:.22}
.pct{font-size:1.9rem;font-weight:900;letter-spacing:-1px;margin-top:2px}
.bignum{font-size:2.6rem;font-weight:900;letter-spacing:-1px;margin:2px 0}
.msg{color:var(--mut);font-weight:700;max-width:40ch;margin:6px auto 0}
.unw{font-size:13px;color:var(--mut);font-weight:700}

/* ---------- sparkline ---------- */
.spark{margin:16px auto 4px;max-width:340px}
.spark svg{width:100%;height:64px;overflow:visible;display:block}
.spark p{font-size:12px;color:var(--mut);font-weight:700;margin-top:2px}

/* ---------- quest ---------- */
.quest{margin:14px auto 0;max-width:380px;text-align:left;font-size:14px}
.quest b{font-weight:900}
.qbar{height:16px;border:2px solid var(--ink);border-radius:99px;background:transparent;margin:7px 0;overflow:hidden}
.qbar i{display:block;height:100%;width:0;background:var(--mint);border-radius:99px;transition:width 1s cubic-bezier(.3,1.4,.5,1)}
.qt,#qt{color:var(--mut);font-weight:700}
.sharebtn{margin-top:14px;font-size:15px}

/* ---------- field grids (final / gpa / percent / convert) ---------- */
.flds{display:grid;gap:10px;grid-template-columns:repeat(3,1fr);margin:12px 0}
.flds.two{grid-template-columns:1fr 1fr}
.flds label{font-size:12.5px;font-weight:800;color:var(--mut);display:grid;gap:6px}
.flds input,.flds select{font:inherit;font-weight:800;font-size:15px;padding:11px 10px;border:2px solid var(--ink);border-radius:13px;background:transparent;color:var(--ink);width:100%;min-width:0;min-height:52px;text-align:center}
.flds input:focus,.flds select:focus{border-color:var(--mint);box-shadow:0 0 0 4px #16c97c33}
.flds .sl2{align-self:end;text-align:center;font-weight:900;color:var(--mut);padding-bottom:16px}

/* ---------- GPA course rows ---------- */
.gprow{grid-template-columns:1fr 1fr 44px}
.gprow .nm{grid-column:1/-1}
.gprow select{font:inherit;font-weight:800;padding:11px 8px;border:2px solid var(--ink);border-radius:13px;background:var(--card);color:var(--ink);width:100%;min-width:0;min-height:52px}
.gprow select:focus{border-color:var(--mint);box-shadow:0 0 0 4px #16c97c33}
.gprow.wt .tp{grid-column:1/-1}

/* ---------- chunky what-if slider ---------- */
.wi{display:grid;gap:2px;font-size:14px;font-weight:800;margin-top:12px}
.wi output{font-weight:900}
input[type=range].gq-wi{-webkit-appearance:none;appearance:none;width:100%;height:44px;background:transparent;cursor:pointer;margin:0;padding:0}
input[type=range].gq-wi::-webkit-slider-runnable-track{height:16px;border:2px solid var(--ink);border-radius:99px;background:#fff}
input[type=range].gq-wi::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:32px;height:32px;margin-top:-10px;border-radius:50%;background:var(--sun);border:2px solid var(--ink)}
input[type=range].gq-wi::-moz-range-track{height:16px;border:2px solid var(--ink);border-radius:99px;background:#fff}
input[type=range].gq-wi::-moz-range-thumb{width:28px;height:28px;border-radius:50%;background:var(--sun);border:2px solid var(--ink)}
.wirow{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:6px}

/* ---------- confetti ---------- */
.confetti{position:fixed;top:-24px;pointer-events:none;z-index:70;animation:fall 2s linear forwards}
@keyframes fall{to{transform:translateY(112vh) rotate(560deg);opacity:.85}}

/* ---------- responsive ---------- */
@media(min-width:900px){
  .calc{padding:26px}
  .row{grid-template-columns:1fr 82px 14px 82px 44px}
  .row .nm{grid-column:auto}
  .gprow{grid-template-columns:1.3fr 100px 84px 44px}
  .gprow .nm{grid-column:auto}
  .gprow.wt{grid-template-columns:1.2fr 100px 84px 112px 44px}
  .gprow.wt .tp{grid-column:auto}
}
@media(max-width:520px){
  .acts .btn{flex:1 1 100%}
  .flds{grid-template-columns:1fr}
  .flds.two{grid-template-columns:1fr 1fr}
}
@media(prefers-reduced-motion:reduce){
  .calc *,.calc *::before,.calc *::after{animation:none!important;transition:none!important}
}

/* ---------- easy grader chart + no-credits toggle (v1.0.2) ---------- */
.gq-nocred{display:flex;align-items:center;gap:10px;font-weight:700;margin:4px 0 14px;cursor:pointer}
.gq-nocred input{width:20px;height:20px;accent-color:var(--mint);cursor:pointer}
.nocred .gprow input[type=number]{opacity:.35;pointer-events:none}
.gq-chartwrap{margin-top:18px;border-top:2px dashed var(--ink);padding-top:14px}
.chart-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.btn.ghost{background:var(--bg);box-shadow:none;min-height:44px;padding:8px 14px;font-size:.9em}
.tscroll{overflow-x:auto;border:2px solid var(--ink);border-radius:15px;max-height:340px;overflow-y:auto}
.gq-chart{width:100%;border-collapse:collapse;font-size:.95em}
.gq-chart th{background:var(--mint);color:var(--ink);padding:10px;position:sticky;top:0}
.gq-chart td{padding:8px 10px;text-align:center;border-top:1px solid #10372b22}
.gq-chart tbody tr:nth-child(even){background:#edf9f066}
@media print{
  body *{visibility:hidden}
  .gq-easygrader,.gq-easygrader *{visibility:visible}
  .gq-easygrader{position:absolute;left:0;top:0;max-width:100%;box-shadow:none}
  .gq-easygrader .gq-print,.gq-easygrader .flds{display:none}
  .tscroll{max-height:none;overflow:visible}
}