:root{
  --cf-bg:#08090d;--cf-panel:#111219;--cf-panel2:#161822;--cf-line:rgba(255,255,255,.09);
  --cf-text:#f7f4ec;--cf-muted:#aaa8b4;--cf-gold:#f1b84b;--cf-violet:#8d63ff;--cf-cyan:#49c2c9;
  --cf-green:#62d39b;--cf-danger:#ff7d86;--cf-radius:24px;--cf-shadow:0 20px 70px rgba(0,0,0,.34)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:
radial-gradient(circle at 82% 7%,rgba(112,60,190,.18),transparent 28%),
radial-gradient(circle at 10% 42%,rgba(31,150,170,.10),transparent 25%),
linear-gradient(180deg,#090a0f 0,#08090d 100%);color:var(--cf-text);font:15px/1.55 Arial,sans-serif}
button,input,select{font:inherit}
button{color:inherit}
.calc-page{min-height:100vh}
.calc-shell{width:min(1180px,calc(100% - 34px));margin:auto}
.calc-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--cf-line);padding:74px 0 52px}
.calc-hero:before,.calc-hero:after{content:"";position:absolute;border-radius:50%;filter:blur(8px);pointer-events:none}
.calc-hero:before{width:420px;height:420px;right:-150px;top:-210px;background:radial-gradient(circle,rgba(141,99,255,.23),transparent 66%)}
.calc-hero:after{width:310px;height:310px;left:-130px;bottom:-190px;background:radial-gradient(circle,rgba(73,194,201,.14),transparent 68%)}
.calc-hero-copy{position:relative;z-index:1;max-width:900px}
.calc-kicker{display:block;color:var(--cf-gold);font-size:.7rem;font-weight:950;letter-spacing:.16em;text-transform:uppercase}
.calc-hero h1{font-size:clamp(3rem,7vw,6rem);line-height:.94;letter-spacing:-.06em;margin:12px 0 20px;max-width:980px}
.calc-hero h1 em{font-style:normal;background:linear-gradient(90deg,#f5cf7a,#ba9cff 64%,#74d6da);-webkit-background-clip:text;background-clip:text;color:transparent}
.calc-hero p{max-width:760px;color:var(--cf-muted);font-size:1.09rem}
.calc-search-wrap{position:relative;z-index:4;margin-top:30px;max-width:850px}
.calc-search{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;min-height:62px;padding:0 16px;border:1px solid rgba(241,184,75,.28);border-radius:18px;background:rgba(18,19,28,.88);box-shadow:0 18px 60px rgba(0,0,0,.28),inset 0 1px 0 rgba(255,255,255,.05);backdrop-filter:blur(18px)}
.calc-search>span{font-size:1.65rem;color:#eacb8e}
.calc-search input{width:100%;border:0;outline:0;color:var(--cf-text);background:transparent;font-size:1rem}
.calc-search input::placeholder{color:#807e8a}
.calc-search kbd{border:1px solid var(--cf-line);border-bottom-color:rgba(255,255,255,.2);border-radius:8px;background:#1a1b22;color:#8f8c98;padding:5px 8px;font-size:.68rem}
.calc-search-wrap>small{display:block;color:#7f7d88;margin:8px 4px 0}
.calc-search-results{position:absolute;z-index:10;top:70px;left:0;right:0;background:#11131a;border:1px solid var(--cf-line);border-radius:18px;padding:8px;box-shadow:var(--cf-shadow)}
.search-result{width:100%;display:flex;align-items:center;gap:12px;border:0;background:transparent;text-align:left;border-radius:12px;padding:11px;cursor:pointer}
.search-result:hover,.search-result:focus-visible{background:rgba(255,255,255,.06);outline:none}
.search-result .s-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:rgba(141,99,255,.13);border:1px solid rgba(141,99,255,.22);font-size:1.05rem}
.search-result strong{display:block}
.search-result small{display:block;color:var(--cf-muted)}
.calc-hero-stats{display:flex;gap:28px;flex-wrap:wrap;margin-top:30px}
.calc-hero-stats div{display:flex;align-items:baseline;gap:8px}
.calc-hero-stats strong{font-size:1.35rem}
.calc-hero-stats span{color:var(--cf-muted);font-size:.78rem}
.calc-workspace{padding:34px 0 54px}
.calc-tabs-wrap{position:sticky;top:72px;z-index:8;margin:0 0 36px;padding:8px;border:1px solid var(--cf-line);border-radius:18px;background:rgba(12,13,18,.88);backdrop-filter:blur(18px);box-shadow:0 14px 38px rgba(0,0,0,.18)}
.calc-tabs{display:flex;gap:7px;overflow-x:auto;scrollbar-width:thin;padding:2px}
.calc-tab{display:flex;align-items:center;gap:7px;flex:0 0 auto;min-height:42px;padding:9px 13px;border:1px solid transparent;border-radius:12px;background:transparent;color:#9996a2;font-weight:850;cursor:pointer}
.calc-tab:hover{color:#fff;background:rgba(255,255,255,.04)}
.calc-tab.active{color:#fff;background:linear-gradient(135deg,rgba(241,184,75,.15),rgba(141,99,255,.15));border-color:rgba(241,184,75,.25);box-shadow:inset 0 1px rgba(255,255,255,.04)}
.calc-tab b{font-size:1rem}
.calc-section-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:20px}
.calc-section-heading h2,.calc-section-heading h3{letter-spacing:-.04em;margin:5px 0 0}
.calc-section-heading h2{font-size:clamp(2rem,4vw,3.2rem)}
.calc-section-heading h3{font-size:1.7rem}
.calc-section-heading>p{max-width:500px;color:var(--cf-muted);margin:0}
.calc-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.calc-card{position:relative;display:flex;flex-direction:column;min-height:220px;padding:20px;border:1px solid var(--cf-line);border-radius:20px;background:linear-gradient(150deg,rgba(255,255,255,.06),rgba(255,255,255,.025));box-shadow:0 14px 40px rgba(0,0,0,.16);cursor:pointer;transition:transform .18s ease,border-color .18s ease,background .18s ease}
.calc-card:hover{transform:translateY(-3px);border-color:rgba(141,99,255,.38);background:linear-gradient(150deg,rgba(141,99,255,.10),rgba(255,255,255,.03))}
.calc-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.calc-card-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:rgba(141,99,255,.12);border:1px solid rgba(141,99,255,.22);font-size:1.3rem}
.calc-card-tag{border:1px solid var(--cf-line);border-radius:999px;padding:5px 8px;color:#8e8b96;font-size:.62rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.calc-card h3{font-size:1.32rem;letter-spacing:-.02em;margin:18px 0 7px}
.calc-card p{color:var(--cf-muted);margin:0 0 18px}
.calc-card .calc-open{margin-top:auto;color:#d2c3ff;font-weight:850;font-size:.8rem}
.calc-card-popular:after{content:"POPULAIRE";position:absolute;right:16px;bottom:16px;font-size:.58rem;font-weight:950;letter-spacing:.1em;color:rgba(241,184,75,.72)}
.calc-personal-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
.calc-personal-card{border:1px solid var(--cf-line);border-radius:20px;padding:18px;background:rgba(255,255,255,.027)}
.calc-mini-heading{display:flex;gap:11px;align-items:center}
.calc-mini-heading>span{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--cf-line);font-size:1.1rem}
.calc-mini-heading strong,.calc-mini-heading small{display:block}
.calc-mini-heading small{color:var(--cf-muted);margin-top:2px}
.calc-mini-list{display:grid;gap:7px;margin-top:14px}
.calc-mini-item{display:flex;align-items:center;gap:10px;width:100%;border:0;border-radius:11px;background:rgba(255,255,255,.035);padding:10px 11px;text-align:left;cursor:pointer}
.calc-mini-item:hover{background:rgba(255,255,255,.06)}
.calc-mini-item span:first-child{width:28px;text-align:center}
.calc-mini-item strong{font-size:.83rem}
.calc-mini-empty{color:#777581;font-size:.8rem;padding:8px}
.calc-discovery{margin-top:26px;border:1px solid rgba(73,194,201,.18);border-radius:24px;padding:26px;background:linear-gradient(135deg,rgba(73,194,201,.06),rgba(141,99,255,.04))}
.calc-discovery h2{font-size:clamp(1.8rem,3vw,2.6rem);letter-spacing:-.04em;margin:5px 0 20px}
.calc-discovery-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.calc-discovery-steps article{display:grid;gap:4px;border:1px solid var(--cf-line);border-radius:16px;padding:16px;background:rgba(0,0,0,.16)}
.calc-discovery-steps b{color:var(--cf-gold);font-size:.7rem}
.calc-discovery-steps strong{font-size:1.02rem}
.calc-discovery-steps span{color:var(--cf-muted);font-size:.82rem}
.calc-empty{padding:50px 20px;text-align:center;border:1px dashed var(--cf-line);border-radius:20px}
.calc-empty>span{font-size:2.4rem;color:#8d8a95}
.calc-empty h3{margin:8px 0}
.calc-empty p{color:var(--cf-muted)}
.calculator-stage{scroll-margin-top:150px}
.calculator-stage-head{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin:8px 0 20px}
.calculator-stage-head h2{font-size:clamp(2.25rem,5vw,4rem);line-height:1;letter-spacing:-.05em;margin:8px 0}
.calculator-stage-head p{max-width:720px;color:var(--cf-muted);margin:0}
.calc-back{border:0;background:transparent;color:#bca9ff;padding:0 0 18px;font-weight:850;cursor:pointer}
.stage-favorite{display:flex;align-items:center;gap:7px;border:1px solid var(--cf-line);border-radius:999px;background:rgba(255,255,255,.04);padding:10px 14px;cursor:pointer}
.stage-favorite.active{border-color:rgba(241,184,75,.42);background:rgba(241,184,75,.10);color:#f5c96f}
.stage-favorite span{font-size:1.1rem}
.calculator-panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.9fr);gap:16px}
.calculator-inputs,.calculator-result{border:1px solid var(--cf-line);border-radius:24px;padding:24px;background:linear-gradient(150deg,rgba(255,255,255,.055),rgba(255,255,255,.024));box-shadow:var(--cf-shadow)}
.calculator-result{border-color:rgba(141,99,255,.24)}
.calculator-block-title{display:flex;gap:11px;align-items:center;margin-bottom:20px}
.calculator-block-title>span{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:rgba(141,99,255,.13);border:1px solid rgba(141,99,255,.27);font-weight:950;color:#c7b7ff}
.calculator-block-title strong,.calculator-block-title small{display:block}
.calculator-block-title small{color:var(--cf-muted);margin-top:2px}
#calculator-form{display:grid;gap:15px}
.calc-field{display:grid;gap:7px}
.calc-field label{display:flex;justify-content:space-between;gap:15px;font-weight:850}
.calc-field label small{color:#7f7c87;font-weight:500}
.calc-field input,.calc-field select{width:100%;min-height:52px;border:1px solid var(--cf-line);border-radius:13px;background:#0d0f14;color:#fff;padding:0 14px;outline:none}
.calc-field input:focus,.calc-field select:focus{border-color:rgba(141,99,255,.58);box-shadow:0 0 0 3px rgba(141,99,255,.10)}
.calc-field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.result-box{position:relative;overflow:hidden;min-height:190px;border:1px solid rgba(241,184,75,.16);border-radius:20px;padding:25px;background:radial-gradient(circle at 90% 10%,rgba(141,99,255,.16),transparent 35%),linear-gradient(145deg,rgba(241,184,75,.06),rgba(255,255,255,.02));display:flex;flex-direction:column;justify-content:center}
.result-box:after{content:"";position:absolute;width:140px;height:140px;border-radius:50%;right:-70px;bottom:-80px;background:rgba(73,194,201,.08)}
.result-overline{color:var(--cf-gold);font-size:.66rem;font-weight:950;letter-spacing:.14em}
#result-main{display:block;font-size:clamp(2.3rem,5vw,4.2rem);line-height:1;letter-spacing:-.05em;margin:10px 0 8px;word-break:break-word}
#result-secondary{color:#c9c6d0}
.result-box.pulse{animation:resultPulse .28s ease}
@keyframes resultPulse{0%{transform:scale(.992);opacity:.75}100%{transform:scale(1);opacity:1}}
.result-error{border:1px solid rgba(255,125,134,.26);background:rgba(255,125,134,.08);color:#ffafb5;border-radius:12px;padding:10px 12px}
.result-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.result-actions button{flex:1;min-width:120px;border:1px solid var(--cf-line);border-radius:11px;background:rgba(255,255,255,.04);padding:10px 12px;cursor:pointer;font-weight:800}
.result-actions button:hover{background:rgba(255,255,255,.07)}
.info-panel{margin-top:10px;border:1px solid var(--cf-line);border-radius:14px;background:rgba(0,0,0,.16);padding:14px}
.info-panel p{color:var(--cf-muted);margin:6px 0 0}
.formula-code{margin-top:8px;border-radius:10px;background:#090a0f;border:1px solid var(--cf-line);padding:12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:#ecd9a8;overflow-wrap:anywhere}
.magic-tip{display:flex;gap:11px;margin-top:10px;border:1px solid rgba(73,194,201,.19);border-radius:14px;background:rgba(73,194,201,.055);padding:13px}
.magic-tip>span{color:#78d9dd;font-size:1.2rem}
.magic-tip strong,.magic-tip p{display:block;margin:0}
.magic-tip p{color:#a9c8ca;margin-top:3px;font-size:.82rem}
.related-section{margin-top:26px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.related-card{display:flex;align-items:center;gap:10px;border:1px solid var(--cf-line);border-radius:14px;background:rgba(255,255,255,.03);padding:12px;cursor:pointer}
.related-card:hover{border-color:rgba(141,99,255,.35);background:rgba(141,99,255,.06)}
.related-card span{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:rgba(141,99,255,.11)}
.related-card strong{font-size:.83rem}
.calc-section-heading.compact{margin-bottom:10px}
.calc-privacy{display:flex;gap:14px;align-items:flex-start;border-top:1px solid var(--cf-line);padding:28px 0 60px;color:var(--cf-muted)}
.calc-privacy>span{color:var(--cf-green)}
.calc-privacy strong{color:var(--cf-text)}
.calc-privacy p{margin:3px 0 0}
@media(max-width:980px){
  .calc-card-grid{grid-template-columns:repeat(2,1fr)}
  .calculator-panel{grid-template-columns:1fr}
  .calculator-result{order:2}
}
@media(max-width:760px){
  .calc-hero{padding:50px 0 38px}
  .calc-hero h1{font-size:clamp(2.7rem,15vw,4.5rem)}
  .calc-section-heading{align-items:flex-start;flex-direction:column;gap:8px}
  .calc-personal-grid,.calc-discovery-steps{grid-template-columns:1fr}
  .calc-tabs-wrap{top:62px;margin-bottom:24px;border-radius:14px;padding:6px}
  .calculator-stage-head{flex-direction:column}
  .stage-favorite{align-self:flex-start}
  .related-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
  .calc-shell{width:calc(100% - 20px)}
  .calc-search{grid-template-columns:auto 1fr;min-height:58px}
  .calc-search kbd{display:none}
  .calc-card-grid{grid-template-columns:1fr}
  .calc-card{min-height:190px;padding:18px}
  .calculator-inputs,.calculator-result{padding:17px;border-radius:18px}
  .calc-field-row{grid-template-columns:1fr}
  .result-actions{display:grid;grid-template-columns:1fr 1fr}
  .result-actions button:first-child{grid-column:1/-1}
  .calc-hero-stats{gap:14px 20px}
  #result-main{font-size:2.55rem}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;animation:none!important;transition:none!important}
}
.calc-card{text-align:left;color:inherit;appearance:none}


/* ===== V2 — Assistant de calcul, sauvegardes, chaînes et comparaisons ===== */
.problem-solver{position:relative;z-index:3;margin-top:28px;max-width:980px;border:1px solid rgba(141,99,255,.28);border-radius:24px;padding:20px;background:linear-gradient(145deg,rgba(141,99,255,.09),rgba(73,194,201,.04),rgba(255,255,255,.025));box-shadow:0 20px 60px rgba(0,0,0,.24),inset 0 1px 0 rgba(255,255,255,.04)}
.problem-solver-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.problem-solver-head strong,.problem-solver-head small{display:block}
.problem-solver-head strong{font-size:1.08rem}
.problem-solver-head small{margin-top:2px;color:var(--cf-muted)}
.problem-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:rgba(141,99,255,.14);border:1px solid rgba(141,99,255,.28);color:#c5b4ff;font-size:1.2rem}
.problem-input-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:9px}
.problem-input-row input{min-width:0;min-height:54px;border:1px solid var(--cf-line);border-radius:14px;background:#0c0e14;color:#fff;padding:0 15px;outline:none}
.problem-input-row input:focus{border-color:rgba(141,99,255,.56);box-shadow:0 0 0 3px rgba(141,99,255,.10)}
.problem-input-row button,.problem-suggestion>button{border:1px solid rgba(241,184,75,.3);border-radius:13px;background:linear-gradient(135deg,rgba(241,184,75,.18),rgba(141,99,255,.15));color:#fff;font-weight:900;padding:0 16px;cursor:pointer}
.problem-input-row button:hover,.problem-suggestion>button:hover{border-color:rgba(241,184,75,.5);background:linear-gradient(135deg,rgba(241,184,75,.24),rgba(141,99,255,.20))}
.problem-examples{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}
.problem-examples button{border:1px solid var(--cf-line);border-radius:999px;background:rgba(255,255,255,.035);color:#a9a6b2;font-size:.72rem;padding:6px 9px;cursor:pointer}
.problem-examples button:hover{color:#fff;border-color:rgba(141,99,255,.3)}
.problem-suggestion{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:13px;align-items:center;margin-top:14px;padding:14px;border:1px solid rgba(98,211,155,.24);border-radius:16px;background:rgba(98,211,155,.055)}
.problem-suggestion-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:rgba(98,211,155,.09);border:1px solid rgba(98,211,155,.22);color:#84e0b4;font-weight:900}
.problem-suggestion strong{display:block;font-size:1.04rem;margin-top:3px}
.problem-suggestion p{margin:3px 0 0!important;font-size:.82rem!important;color:#a7c8b8!important;max-width:none!important}
.problem-suggestion>button{min-height:42px}
.problem-message{margin:11px 0 0!important;border:1px solid rgba(255,125,134,.22);border-radius:12px;background:rgba(255,125,134,.07);color:#ffb3b8!important;padding:10px 12px;font-size:.82rem!important;max-width:none!important}

.calc-personal-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.calc-discovery-steps.four{grid-template-columns:repeat(4,minmax(0,1fr))}

.result-warning{border:1px solid rgba(241,184,75,.30);background:rgba(241,184,75,.08);color:#f4d18c;border-radius:12px;padding:10px 12px;margin:10px 0 0}
.save-panel{margin-top:10px;padding:14px;border:1px solid rgba(141,99,255,.24);border-radius:14px;background:rgba(141,99,255,.055)}
.save-panel>label{display:block;font-weight:850;margin-bottom:7px}
.save-panel>div{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}
.save-panel input{min-width:0;min-height:44px;border:1px solid var(--cf-line);border-radius:11px;background:#0b0d12;color:#fff;padding:0 12px;outline:none}
.save-panel input:focus{border-color:rgba(141,99,255,.55);box-shadow:0 0 0 3px rgba(141,99,255,.1)}
.save-panel button{border:1px solid rgba(141,99,255,.32);border-radius:11px;background:rgba(141,99,255,.16);font-weight:850;padding:0 14px;cursor:pointer}
.save-panel small{display:block;color:var(--cf-muted);margin-top:7px}
.chain-section{margin-top:26px;border:1px solid rgba(73,194,201,.18);border-radius:20px;padding:17px;background:linear-gradient(135deg,rgba(73,194,201,.05),rgba(141,99,255,.035))}
.chain-card{border-color:rgba(73,194,201,.18)}
.chain-card:hover{border-color:rgba(73,194,201,.4);background:rgba(73,194,201,.06)}

.saved-grid{display:grid;gap:12px}
.saved-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;align-items:center;border:1px solid var(--cf-line);border-radius:18px;padding:16px;background:linear-gradient(145deg,rgba(255,255,255,.045),rgba(255,255,255,.022))}
.saved-card-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:14px;background:rgba(141,99,255,.12);border:1px solid rgba(141,99,255,.22);font-weight:900;color:#c6b6ff}
.saved-card-body h3{margin:4px 0 4px;font-size:1.08rem}
.saved-card-body p{margin:0;color:var(--cf-muted);font-size:.82rem}
.saved-card-body small{display:block;color:#706e78;margin-top:6px}
.saved-card-actions{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}
.saved-card-actions button{border:1px solid var(--cf-line);border-radius:10px;background:rgba(255,255,255,.04);padding:8px 11px;cursor:pointer;font-weight:800}
.saved-card-actions button:hover{background:rgba(255,255,255,.07)}
.saved-card-actions .danger{color:#ff9da4;border-color:rgba(255,125,134,.2)}

@media(max-width:980px){
  .calc-personal-grid.three{grid-template-columns:1fr 1fr}
  .calc-discovery-steps.four{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .problem-suggestion{grid-template-columns:auto 1fr}
  .problem-suggestion>button{grid-column:1/-1;width:100%;min-height:46px}
  .saved-card{grid-template-columns:auto 1fr}
  .saved-card-actions{grid-column:1/-1;justify-content:stretch}
  .saved-card-actions button{flex:1}
}
@media(max-width:620px){
  .problem-solver{padding:15px;border-radius:18px}
  .problem-input-row{grid-template-columns:1fr}
  .problem-input-row button{min-height:48px}
  .problem-examples{overflow-x:auto;flex-wrap:nowrap;padding-bottom:3px}
  .problem-examples button{flex:0 0 auto}
  .calc-personal-grid.three,.calc-discovery-steps.four{grid-template-columns:1fr}
  .save-panel>div{grid-template-columns:1fr}
  .save-panel button{min-height:44px}
}