/* Curiovex / certification learning tools: hub, guided lessons, flashcards, cheat sheet, note search. */
.cl-hub,.cl-shell,.cl-sheet{--cl-ok:#79d39f;--cl-mid:#e3c06b;--cl-bad:#ef6b61;box-sizing:border-box}
.cl-hub *,.cl-shell *,.cl-sheet *{box-sizing:border-box}
.cl-hub{margin:18px 0;border:1px solid #ffffff17;border-radius:24px;padding:22px;background:radial-gradient(ellipse 60% 70% at 0% 0%,#79d39f12,transparent 70%),#111214;display:grid;gap:18px}
.cl-hub-top{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:22px;align-items:center}
.cl-ring{--v:0;width:118px;height:118px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--cl-ok) calc(var(--v)*1%),#ffffff12 0);position:relative;flex-shrink:0}
.cl-ring::before{content:'';position:absolute;inset:9px;border-radius:50%;background:#111214}
.cl-ring span{position:relative;font:600 26px var(--mono,monospace);color:#f1f3f2;text-align:center;line-height:1.1}
.cl-ring small{display:block;font:500 9px var(--mono,monospace);letter-spacing:.1em;text-transform:uppercase;color:#8f9599;margin-top:4px}
.cl-hub-copy h2{margin:8px 0 12px;font-size:clamp(20px,2.2vw,26px);font-weight:550;letter-spacing:-.6px;color:#f2f3f4}
.cl-next{display:inline-flex;align-items:center;gap:8px}
.cl-next-why{margin:8px 0 0;font-size:12px;color:#9ea3a8;line-height:1.6}
.cl-stats{display:grid;grid-template-columns:repeat(2,minmax(96px,1fr));gap:8px;margin:0}
.cl-stats div{border:1px solid #ffffff12;background:#0c0d0f;border-radius:14px;padding:10px 12px}
.cl-stats dt{display:flex;align-items:center;gap:6px;font-size:10.5px;color:#8f9399;text-transform:uppercase;letter-spacing:.06em}
.cl-stats dt svg,.cl-stats dt [data-icon]{width:13px;height:13px}
.cl-stats dd{margin:4px 0 0;font:600 18px var(--mono,monospace);color:#eef0f2}
.cl-tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.cl-tool{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:12px;row-gap:3px;align-items:start;padding:14px;border:1px solid #ffffff14;border-radius:16px;background:#141518;color:inherit;text-decoration:none;transition:border-color .15s,transform .15s,background .15s}
.cl-tool:hover{border-color:#79d39f88;background:#16191b;transform:translateY(-2px)}
.cl-tool>svg,.cl-tool>[data-icon]{grid-row:span 2;width:20px;height:20px;padding:9px;box-sizing:content-box;border-radius:12px;background:#79d39f1c;color:var(--cl-ok)}
.cl-tool strong{font-size:13.5px;color:#eef0f2}
.cl-tool span{font-size:11.5px;line-height:1.55;color:#9a9fa4}
.cl-tool.quiet{opacity:.7}
.cl-hub-bottom{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(240px,1fr);gap:14px}
.cl-hub-bottom h3{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:600;margin:0 0 10px;color:#e6e8ea}
.cl-hub-bottom h3 svg{width:15px;height:15px}
.cl-domains,.cl-countdown{border:1px solid #ffffff10;border-radius:16px;padding:14px;background:#0e0f11}
.cl-dom{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(60px,1fr) 42px 54px;gap:10px;align-items:center;padding:6px 0;font-size:12px}
.cl-dom-name{display:flex;align-items:center;gap:8px;color:#d4d7da;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cl-dom-name i{font:600 10px var(--mono,monospace);width:20px;height:20px;border-radius:50%;display:inline-grid;place-items:center;border:1px solid #ffffff26;color:#8f9399;font-style:normal;flex-shrink:0}
.cl-dom-name svg{width:14px;height:14px;color:var(--cl-ok);flex-shrink:0}
.cl-bar{height:6px;border-radius:6px;background:#ffffff10;overflow:hidden}
.cl-bar i{display:block;height:100%;background:#6e7379;border-radius:6px;transition:width .5s}
.cl-dom.good .cl-bar i{background:var(--cl-ok)}.cl-dom.mid .cl-bar i{background:var(--cl-mid)}.cl-dom.low .cl-bar i{background:var(--cl-bad)}
.cl-dom b{font:600 12px var(--mono,monospace);text-align:right;color:#dfe1e4}
.cl-dom a{font-size:11px;color:var(--cl-ok);text-align:right}
.cl-countdown label{display:grid;gap:6px;font-size:11px;color:#9a9ea3}
.cl-countdown input{background:#0a0b0c;border:1px solid #ffffff22;border-radius:10px;padding:8px 10px;color:#e6e8ea;font:12px inherit;color-scheme:dark}
.cl-countdown p{font-size:12px;line-height:1.6;color:#a9adb2;margin:10px 0 0}
.cl-countdown b{color:#f0f1f2}
.cl-search{display:flex;align-items:center;gap:10px;border:1px solid #ffffff17;border-radius:14px;background:#0f1012;padding:4px 14px;margin:0 0 14px}
.cl-search span{display:grid;color:#8a8f95}.cl-search svg{width:16px;height:16px}
.cl-search input{flex:1;min-width:0;background:transparent;border:0;outline:0;color:#e6e8ea;font:13px inherit;padding:10px 0}
.cl-search em{font-style:normal;font-size:11px;color:#8a8f95;white-space:nowrap}
.domain-note mark{background:#79d39f40;color:inherit;border-radius:3px;padding:0 2px}
.dn-actions{display:flex;flex-wrap:wrap;gap:8px}

/* lessons and flashcards */
.cl-shell{max-width:820px;margin:0 auto;padding:4px 0 30px}
.cl-top{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.cl-title{flex:1;text-align:center;font-size:13px;color:#c7cacd;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cl-count{font:600 12px var(--mono,monospace);color:#8f9399}
.cl-card{margin-top:18px;border:1px solid #ffffff17;border-radius:22px;padding:28px;background:#121316;animation:cl-in .35s cubic-bezier(.2,.7,.2,1)}
.cl-card.note{background:radial-gradient(ellipse 70% 60% at 100% 0%,#79d39f10,transparent 70%),#121316}
@keyframes cl-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.cl-kind{display:inline-flex;align-items:center;gap:7px;font:600 10.5px var(--mono,monospace);letter-spacing:.1em;text-transform:uppercase;color:var(--cl-ok)}
.cl-kind svg{width:14px;height:14px}
.cl-card h2{font-size:clamp(20px,2.4vw,28px);font-weight:550;letter-spacing:-.6px;margin:12px 0 10px;color:#f2f3f4;line-height:1.25}
.cl-note{font-size:16px;line-height:1.75;color:#d6d9dc;margin:0}
.cl-term{color:#a8ecc4;font-weight:600}
.cl-hint{font-size:12px;color:#8a8f95;margin:16px 0 0;padding-top:14px;border-top:1px solid #ffffff0d}
.cl-actions{display:flex;justify-content:flex-end;margin-top:18px;gap:8px}
.cl-actions.center{justify-content:center}
.cl-actions kbd,.cl-rate kbd{font:10px var(--mono,monospace);border:1px solid currentColor;border-radius:5px;padding:1px 5px;opacity:.7;margin-left:6px}
.cl-flash{display:block;width:100%;margin-top:18px;min-height:300px;perspective:1400px;background:none;border:0;padding:0;cursor:pointer;position:relative;color:inherit;font:inherit;text-align:center}
.cl-flash-face{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:30px;border:1px solid #ffffff17;border-radius:22px;background:#121316;backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.cl-flash-face.back{transform:rotateY(180deg);background:radial-gradient(ellipse 70% 60% at 50% 0%,#79d39f14,transparent 70%),#121316;border-color:#79d39f55}
.cl-flash.flipped .front{transform:rotateY(-180deg)}
.cl-flash.flipped .back{transform:rotateY(0)}
.cl-flash small{font:600 10px var(--mono,monospace);letter-spacing:.1em;text-transform:uppercase;color:#8f9399}
.cl-flash strong{font-size:clamp(18px,2.2vw,24px);font-weight:550;line-height:1.4;color:#f2f3f4;max-width:620px}
.cl-flash em{font-style:normal;font-size:12px;color:#8a8f95}
.cl-flash p{font-size:13.5px;line-height:1.7;color:#b9bdc1;margin:0;max-width:600px}
.cl-rate{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:16px}
.cl-rate button{display:grid;gap:2px;justify-items:center;padding:10px;border-radius:14px;border:1px solid #ffffff1c;background:#15171a;color:#e6e8ea;font:600 13px inherit;cursor:pointer;transition:transform .12s,border-color .12s}
.cl-rate button:hover{transform:translateY(-2px)}
.cl-rate small{font:500 10.5px var(--mono,monospace);color:#8f9399}
.cl-rate .again{border-color:#ef6b6166}.cl-rate .hard{border-color:#e3c06b66}.cl-rate .good{border-color:#79d39f66}.cl-rate .easy{border-color:#8fb4ff66}
.cl-done{text-align:center;display:grid;justify-items:center;gap:12px;padding:40px 20px;border:1px solid #ffffff14;border-radius:24px;background:#111214;margin-top:20px}
.cl-done h1{font-size:clamp(22px,2.6vw,30px);margin:6px 0 0;color:#f2f3f4;letter-spacing:-.7px}
.cl-done p{max-width:560px;font-size:13.5px;line-height:1.7;color:#a9adb2;margin:0}
.cl-done .cert-hero-actions{justify-content:center}

/* cheat sheet */
.cl-sheet{max-width:1100px;margin:0 auto}
.cl-sheet-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px}
.cl-sheet header h1{margin:0;font-size:clamp(22px,2.6vw,30px);color:#f2f3f4;letter-spacing:-.6px}
.cl-sheet header p{margin:6px 0 16px;font-size:12px;color:#8f9399}
.cl-sheet-grid{columns:2 380px;column-gap:14px}
.cl-sheet-grid section{break-inside:avoid;border:1px solid #ffffff14;border-radius:16px;padding:14px 16px;background:#121316;margin-bottom:14px}
.cl-sheet-grid h2{display:flex;align-items:center;gap:8px;font-size:14px;margin:0 0 8px;color:#eef0f2}
.cl-sheet-grid h2 span{font:600 10px var(--mono,monospace);width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:#79d39f22;color:#79d39f}
.cl-sheet-grid h2 em{margin-left:auto;font:500 11px var(--mono,monospace);color:#8f9399;font-style:normal}
.cl-sheet-grid ul{margin:0;padding-left:16px}
.cl-sheet-grid li{font-size:12px;line-height:1.6;color:#c4c8cb;margin:4px 0}
.cl-sheet-tip{font-size:12.5px;color:#c4c8cb}
@media print{
  body *{visibility:hidden}
  .cl-sheet,.cl-sheet *{visibility:visible}
  .cl-sheet{position:absolute;left:0;top:0;width:100%;color:#000}
  .cl-sheet-bar{display:none}
  .cl-sheet header h1,.cl-sheet-grid h2,.cl-sheet-grid li,.cl-term,.cl-sheet-tip{color:#000!important}
  .cl-sheet-grid section{background:#fff;border-color:#bbb}
}
@media(max-width:900px){
  .cl-hub-top{grid-template-columns:auto minmax(0,1fr)}
  .cl-stats{grid-column:1/-1;grid-template-columns:repeat(4,1fr)}
  .cl-tools{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cl-hub-bottom{grid-template-columns:1fr}
}
@media(max-width:560px){
  .cl-hub{padding:16px}
  .cl-hub-top{grid-template-columns:1fr;justify-items:start}
  .cl-stats{grid-template-columns:repeat(2,1fr)}
  .cl-tools{grid-template-columns:1fr}
  .cl-dom{grid-template-columns:minmax(0,1fr) 60px 38px 48px}
  .cl-card{padding:20px}
  .cl-rate{grid-template-columns:repeat(2,1fr)}
}
@media(prefers-reduced-motion:reduce){.cl-card,.cl-flash-face,.cl-tool,.cl-bar i{animation:none;transition:none}}