/* Bascule — socle CSS commun aux 12 pages (index + 11 outils).
   Chaque page garde un <style> résiduel pour ses règles propres. */

/* === Variables & reset === */
:root{
  --bg:#0E1A2B;
  --surface:#132539;
  --surface-2:#1A2C46;
  --border:#2A415F;
  --border-soft:#203552;
  --text:#ECE7DD;
  --text-dim:#9FB0C4;
  --text-faint:#647B99;
  --gold:#C9A15A;
  --gold-bright:#E8C275;
  --teal:#6FADA6;
  --rose:#C97B63;
  --radius:2px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'IBM Plex Sans', system-ui, sans-serif;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px;}

/* === Header === */
header{padding:32px 0 0;}
.brand{
  display:flex; align-items:baseline; justify-content:space-between;
  border-bottom:1px solid var(--border-soft);
  padding-bottom:20px;
}
.brand-mark{
  font-family:'IBM Plex Mono', monospace;
  font-size:13px; letter-spacing:.18em; text-transform:uppercase;
  color:var(--gold-bright); font-weight:500; text-decoration:none;
}
.brand-tag{
  font-family:'IBM Plex Mono', monospace;
  font-size:12px; color:var(--text-faint); letter-spacing:.04em;
}

/* === Hero (outils — canonicalisé sur la valeur présente dans 3/4 fichiers) === */
.hero{padding:56px 0 40px; border-bottom:1px solid var(--border-soft);}
.eyebrow{
  font-family:'IBM Plex Mono', monospace; font-size:12px;
  letter-spacing:.16em; text-transform:uppercase; color:var(--teal);
  margin:0 0 14px;
}
h1{
  font-family:'Fraunces', serif;
  font-weight:500;
  font-size:clamp(34px, 5.5vw, 54px);
  line-height:1.08;
  margin:0 0 18px;
  letter-spacing:-0.01em;
}
.hero p{
  font-size:17px; color:var(--text-dim); max-width:58ch; margin:0;
}

/* === Layout outil === */
main{padding:48px 0 0;}
.grid{
  display:grid; grid-template-columns: 1fr 1.15fr; gap:56px;
  align-items:start;
}
@media (max-width: 860px){
  .grid{grid-template-columns:1fr; gap:40px;}
}

.panel-label{
  font-family:'IBM Plex Mono', monospace; font-size:12px;
  letter-spacing:.16em; text-transform:uppercase; color:var(--text-faint);
  margin:0 0 24px; padding-bottom:12px; border-bottom:1px solid var(--border-soft);
}

/* === Champs de formulaire === */
.field{
  display:grid; grid-template-columns: 1fr auto; align-items:end;
  gap:16px; padding:16px 0; border-bottom:1px solid var(--border-soft);
}
.field label{
  font-size:14px; color:var(--text-dim); font-weight:500;
}
.field .hint{
  display:block; font-size:12px; color:var(--text-faint); margin-top:3px; font-weight:400;
}
.field input[type="number"]{
  width:150px; text-align:right;
  background:transparent; border:none; border-bottom:1px solid var(--border);
  color:var(--text); font-family:'IBM Plex Mono', monospace; font-size:20px;
  padding:4px 2px 8px; font-weight:500;
}
.field input[type="number"]:focus{
  outline:none; border-bottom-color:var(--gold-bright);
}
.field-suffix{font-size:13px; color:var(--text-faint); margin-left:6px;}

.slider-field{padding:18px 0 20px; border-bottom:1px solid var(--border-soft);}
.slider-row{display:flex; justify-content:space-between; align-items:baseline; margin-bottom:10px;}
.slider-row label{font-size:14px; color:var(--text-dim); font-weight:500;}
.slider-value{font-family:'IBM Plex Mono', monospace; font-size:20px; color:var(--gold-bright); font-weight:500;}
input[type="range"]{
  width:100%; -webkit-appearance:none; appearance:none;
  height:2px; background:var(--border); outline:none; margin:8px 0 4px;
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none; appearance:none; width:14px; height:14px; border-radius:50%;
  background:var(--gold-bright); cursor:pointer; border:2px solid var(--bg);
  box-shadow:0 0 0 1px var(--gold-bright);
}
input[type="range"]::-moz-range-thumb{
  width:14px; height:14px; border-radius:50%; background:var(--gold-bright);
  cursor:pointer; border:2px solid var(--bg); box-shadow:0 0 0 1px var(--gold-bright);
}
.ticks{display:flex; justify-content:space-between; font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--text-faint);}

details.advanced{margin-top:8px;}
details.advanced summary{
  cursor:pointer; font-size:13px; color:var(--text-faint);
  font-family:'IBM Plex Mono', monospace; letter-spacing:.04em;
  padding:14px 0; list-style:none;
}
details.advanced summary::-webkit-details-marker{display:none;}
details.advanced summary::before{content:"+ "; color:var(--teal);}
details.advanced[open] summary::before{content:"– ";}
details.advanced summary:focus-visible{outline:2px solid var(--gold-bright); outline-offset:3px;}
.adv-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:0 24px;
  padding:4px 0 8px;
}
.adv-field{padding:10px 0; border-bottom:1px solid var(--border-soft);}
.adv-field label{display:block; font-size:12.5px; color:var(--text-faint); margin-bottom:6px;}
.adv-field input{
  width:100%; background:transparent; border:none; border-bottom:1px solid var(--border);
  color:var(--text-dim); font-family:'IBM Plex Mono', monospace; font-size:15px; padding:2px 0 6px;
}
.adv-field input:focus{outline:none; border-bottom-color:var(--gold-bright); color:var(--text);}

/* === Toggle de mode (outils à plusieurs modes de calcul, ex. Outil 12 — FIRE) === */
.mode-toggle{
  display:flex; gap:2px; margin-bottom:28px;
  border:1px solid var(--border-soft); border-radius:var(--radius); overflow:hidden;
}
.mode-toggle button{
  flex:1; background:var(--surface); border:none; border-left:1px solid var(--border-soft);
  color:var(--text-faint); font-family:'IBM Plex Sans', sans-serif; font-size:13.5px; font-weight:500;
  padding:14px 12px; cursor:pointer; transition:background 0.15s ease, color 0.15s ease;
}
.mode-toggle button:first-child{border-left:none;}
.mode-toggle button.active{
  background:var(--surface-2); color:var(--gold-bright);
}
.mode-toggle button:hover:not(.active){ color:var(--text-dim); }
.mode-toggle button:focus-visible{ outline:2px solid var(--gold-bright); outline-offset:-2px; }

/* === Bloc résultats === */
.result-panel{
  background:var(--surface); border:1px solid var(--border-soft);
  padding:28px 28px 24px; border-radius:var(--radius);
}
.verdict{
  font-family:'Fraunces', serif; font-size:22px; font-weight:500; line-height:1.3;
  margin:0 0 4px;
}
.verdict .amount{color:var(--gold-bright);}
.verdict-sub{font-size:13px; color:var(--text-faint); margin:0 0 22px;}

.chart-wrap{margin:20px 0 8px;}
svg{width:100%; height:auto; display:block; overflow:visible;}
.axis-label{font-family:'IBM Plex Mono', monospace; font-size:10px; fill:var(--text-faint);}
.legend{display:flex; gap:20px; margin-top:10px; font-family:'IBM Plex Mono', monospace; font-size:11.5px; color:var(--text-dim); flex-wrap:wrap;}
.legend-item{display:flex; align-items:center; gap:7px;}
.legend-swatch{width:14px; height:2px; border-radius:1px;}

.figures{
  margin-top:24px; padding-top:20px; border-top:1px solid var(--border-soft);
  display:grid; grid-template-columns:1fr 1fr; gap:14px 20px;
}
.figure dt{font-size:12px; color:var(--text-faint); margin-bottom:4px;}
.figure dd{margin:0; font-family:'IBM Plex Mono', monospace; font-size:16px; color:var(--text);}

.warn-box{
  margin-top:20px; padding:12px 14px; border-left:2px solid var(--rose);
  background:rgba(201,123,99,0.08); font-size:12.5px; color:var(--text-dim);
}

/* === Méthode === */
.method{
  margin-top:56px; padding:28px 0; border-top:1px solid var(--border-soft);
}
.method h2{
  font-family:'Fraunces', serif; font-weight:500; font-size:22px; margin:0 0 16px;
}
.method ul{margin:0; padding:0; list-style:none;}
.method li{
  padding:12px 0; border-bottom:1px solid var(--border-soft);
  font-size:14.5px; color:var(--text-dim);
}

.suite-nav{margin-top:40px; font-size:13px; color:var(--text-faint);}
.suite-nav a{color:var(--teal); text-decoration:none; border-bottom:1px solid transparent;}
.suite-nav a:hover, .suite-nav a:focus-visible{border-bottom-color:var(--teal);}

/* === Footer === */
footer{
  margin-top:32px; padding:28px 0 48px; border-top:1px solid var(--border-soft);
}
.disclaimer{font-size:12.5px; color:var(--text-faint); max-width:60ch; margin:0;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
}

/* === Bandeau de consentement (cookies) === */
.consent-banner{
  position:fixed; left:0; right:0; bottom:0; z-index:100;
  background:var(--surface-2); border-top:1px solid var(--border);
  padding:18px 24px; display:flex; flex-wrap:wrap; align-items:center; gap:16px;
  font-size:13.5px; color:var(--text-dim);
}
.consent-banner p{ margin:0; flex:1 1 320px; }
.consent-banner-actions{ display:flex; gap:10px; flex-shrink:0; }
.consent-banner button{
  font-family:'IBM Plex Sans', sans-serif; font-size:13px; font-weight:500;
  padding:10px 18px; border-radius:var(--radius); cursor:pointer;
  border:1px solid var(--border-soft); background:var(--surface); color:var(--text-dim);
}
.consent-banner .consent-accept{
  background:var(--gold-bright); color:var(--bg); border-color:var(--gold-bright); font-weight:600;
}
.consent-banner button:hover{ border-color:var(--gold-bright); }
.consent-banner button:focus-visible{ outline:2px solid var(--gold-bright); outline-offset:2px; }

/* === Liens légaux du footer === */
.legal-links{ margin-top:12px; font-size:12.5px; color:var(--text-faint); }
.legal-links a{ color:var(--teal); text-decoration:none; border-bottom:1px solid transparent; }
.legal-links a:hover, .legal-links a:focus-visible{ border-bottom-color:var(--teal); }