/* ============================================================
   Hacheurs série & parallèle — feuille de style
   Thème « instrument de mesure » : sombre, grille, monospace
   ============================================================ */

:root{
  --bg:#0b0f14;
  --panel:#11161c;
  --panel2:#0d1218;
  --line:#232c35;
  --line2:#303b47;
  --txt:#d7e1ea;
  --muted:#8494a3;
  --faint:#5a6874;

  --amber:#ffc247;   /* valeur α, trace iD(t)     */
  --green:#00e5a0;   /* trace u(t)                */
  --violet:#b58cff;  /* trace vH(t)               */
  --pink:#ff7ab8;    /* trace i(t) / iL(t)        */
  --t13:#34d399;     /* diode D passante          */
  --t24:#f59e0b;     /* interrupteur H fermé      */
  --red:#ff5c5c;     /* curseur temps / commutation */

  --mono:"Cascadia Code","Consolas","Courier New",monospace;
  --sans:"Segoe UI","Inter",system-ui,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}

html{scrollbar-color:#2b3540 var(--bg)}

body{
  font-family:var(--sans);
  color:var(--txt);
  background:
    radial-gradient(1100px 500px at 75% -10%, rgba(0,229,160,.05), transparent 60%),
    repeating-linear-gradient(0deg,  transparent 0 23px, rgba(255,255,255,.015) 23px 24px),
    repeating-linear-gradient(90deg, transparent 0 23px, rgba(255,255,255,.015) 23px 24px),
    var(--bg);
  min-height:100vh;
}

/* ---------- Barre supérieure ---------- */
.topbar{
  display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;
  padding:16px 22px 12px;
  border-bottom:1px solid var(--line);
  position:relative;
}
.topbar::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--amber),var(--green) 45%,var(--t13));
}
.tag{
  font:600 10px/1 var(--mono);
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--amber);
  border:1px solid rgba(255,194,71,.4);
  padding:4px 8px;border-radius:3px;
  display:inline-block;margin-bottom:8px;
}
.brand h1{
  font-size:21px;font-weight:650;letter-spacing:.02em;
}
.brand p{
  color:var(--muted);font-size:12.5px;margin-top:3px;letter-spacing:.02em;
}
.hint{
  display:flex;gap:16px;flex-wrap:wrap;
  color:var(--muted);font-size:11.5px;align-items:center;
  padding-bottom:4px;
}
kbd{
  font:600 10.5px var(--mono);
  color:var(--txt);
  border:1px solid var(--line2);
  border-bottom-width:2px;
  border-radius:3px;
  padding:2px 6px;
  background:var(--panel);
}

/* ---------- Grille générale ---------- */
main{
  display:grid;
  grid-template-columns:405px minmax(0,1fr);
  gap:14px;
  padding:14px 16px;
  max-width:1560px;margin:0 auto;
  align-items:stretch;
}
.col-left{display:flex;flex-direction:column;gap:14px;min-width:0}

/* ---------- Panneaux ---------- */
.panel{
  background:linear-gradient(180deg,var(--panel),var(--panel2));
  border:1px solid var(--line);
  border-radius:8px;
  padding:14px 16px 16px;
  box-shadow:0 8px 24px rgba(0,0,0,.25);
}
.panel h2{
  font:600 11px var(--mono);
  text-transform:uppercase;letter-spacing:.14em;
  color:var(--muted);
  display:flex;align-items:center;gap:8px;
  margin-bottom:12px;
}
.panel h2::before{
  content:"";width:7px;height:7px;background:var(--green);
  box-shadow:0 0 6px var(--green);
  flex:none;
}
.panel h2 .gr{text-transform:none}

/* ---------- Badge d'état de conduction ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  font:600 11.5px var(--mono);
  border:1px solid var(--line2);
  border-radius:4px;
  padding:5px 10px;
  margin-bottom:10px;
  background:var(--panel2);
  color:var(--muted);
  letter-spacing:.03em;
}
.bdot{width:9px;height:9px;flex:none;background:var(--faint)}
.badge.bh{color:var(--t24);border-color:rgba(245,158,11,.45)}
.badge.bh .bdot{background:var(--t24);box-shadow:0 0 7px var(--t24)}
.badge.bd{color:var(--t13);border-color:rgba(52,211,153,.45)}
.badge.bd .bdot{background:var(--t13);box-shadow:0 0 7px var(--t13)}

/* ---------- Schéma ---------- */
#schema{width:100%;height:auto;display:block}
.mode-seg{margin-bottom:10px}

.bwire{stroke:#74869a;stroke-width:2;fill:none}
.bline{stroke:#74869a;fill:none}
.bline.long{stroke-width:2.2}
.bline.short{stroke-width:4.5}
.cap{stroke:#74869a;stroke-width:3;fill:none}
.sym{stroke:#74869a;stroke-width:2;fill:none}

.wire .base{stroke:#74869a;stroke-width:2;fill:none}
.wire .flow{
  stroke:var(--t24);stroke-width:3;fill:none;
  stroke-dasharray:5 7;stroke-linecap:round;
  opacity:0;
}
.wire.on .flow{opacity:.95;animation:flow .45s linear infinite}
.wire.on.dg .flow{stroke:var(--t13)}
.wire.rev .flow{animation-direction:reverse}
@keyframes flow{to{stroke-dashoffset:-12}}

.dimmed{opacity:.22;transition:opacity .25s}

/* Interrupteur commandé H */
.sw{color:#93a7b5}
.sw .pivot{fill:#aab8c4}
.sw .blade{stroke:currentColor;stroke-width:2.6;stroke-linecap:round;transition:opacity .1s}
.sw .bc{opacity:0}
.sw.on .bo{opacity:0}
.sw.on .bc{opacity:1}
.sw.on{color:var(--t24);filter:drop-shadow(0 0 5px rgba(245,158,11,.8))}
.thl{fill:currentColor;font:700 13px var(--mono)}

/* Diode */
.dio{color:#93a7b5}
.dio .pled{stroke:currentColor;stroke-width:2.4;stroke-linecap:square}
.dio .dtri{fill:var(--panel2);stroke:currentColor;stroke-width:2.2;stroke-linejoin:round}
.dio .dbar{stroke:currentColor;stroke-width:2.4}
.dio .mask{fill:var(--panel2)}
.dio.on{color:var(--t13);filter:drop-shadow(0 0 5px rgba(52,211,153,.8))}

.node{fill:#aab8c4}
.nlab{fill:var(--muted);font:600 11px var(--mono)}

.lbl{fill:#a7b6c4;font:600 13px var(--mono)}
.lbl.it{font-style:italic}
.lbl .sub{font-size:9px}
.lbl2{fill:var(--faint);font:11px var(--mono)}
.pm{fill:var(--muted);font:700 12px var(--mono)}
.ucarrow{stroke:#7e8f9d;stroke-width:1.6}
.iarrow{stroke:#7e8f9d;stroke-width:1.6}

/* ---------- Commande ---------- */
.alpha-row{display:flex;align-items:center;gap:16px;margin-bottom:6px}
.alpha-value{
  font:700 44px var(--mono);
  color:var(--amber);
  line-height:1;
  text-shadow:0 0 14px rgba(255,194,71,.25);
  min-width:96px;
  text-align:right;
}
.alpha-value small{font-size:22px;color:var(--muted);margin-left:2px}
.alpha-meta{
  display:flex;flex-direction:column;gap:4px;
  font-size:11.5px;color:var(--muted);
}
.alpha-meta b{color:var(--txt);font-family:var(--mono)}

input[type=range]{
  -webkit-appearance:none;appearance:none;
  width:100%;height:28px;background:transparent;cursor:ew-resize;
  --fill:33%;
}
input[type=range]::-webkit-slider-runnable-track{
  height:7px;border-radius:3px;
  border:1px solid var(--line2);
  background:linear-gradient(90deg,var(--amber) var(--fill),#202a34 var(--fill));
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;
  width:16px;height:24px;margin-top:-9.5px;
  background:var(--panel);
  border:2px solid var(--amber);border-radius:4px;
  box-shadow:0 0 10px rgba(255,194,71,.4);
}
input[type=range]::-moz-range-track{
  height:7px;border-radius:3px;border:1px solid var(--line2);background:#202a34;
}
input[type=range]::-moz-range-progress{height:7px;border-radius:3px;background:var(--amber)}
input[type=range]::-moz-range-thumb{
  width:12px;height:22px;background:var(--panel);
  border:2px solid var(--amber);border-radius:4px;
  box-shadow:0 0 10px rgba(255,194,71,.4);
}
.ticks{
  display:flex;justify-content:space-between;
  font:10px var(--mono);color:var(--faint);
  margin:-2px 4px 10px;
}

.presets{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.presets button{
  font:600 11px var(--mono);
  color:var(--muted);
  background:var(--panel2);
  border:1px solid var(--line2);
  border-radius:4px;
  padding:5px 9px;cursor:pointer;
  transition:all .12s;
}
.presets button:hover{color:var(--amber);border-color:var(--amber)}
.presets button.cur{color:var(--bg);background:var(--amber);border-color:var(--amber);font-weight:700}

.field{margin-bottom:12px}
.field>label{
  display:block;
  font:600 10px var(--mono);
  text-transform:uppercase;letter-spacing:.12em;
  color:var(--faint);margin-bottom:6px;
}
.seg{display:flex;gap:0}
.seg button{
  flex:1;
  font:600 11.5px var(--sans);
  color:var(--muted);
  background:var(--panel2);
  border:1px solid var(--line2);
  padding:8px 6px;cursor:pointer;
  transition:all .12s;
}
.seg button:first-child{border-radius:4px 0 0 4px}
.seg button:last-child{border-radius:0 4px 4px 0;border-left:none}
.seg button.on{
  color:var(--green);
  border-color:rgba(0,229,160,.5);
  background:rgba(0,229,160,.07);
}
.seg button+button.on{border-left:1px solid rgba(0,229,160,.5)}

.lRow{display:flex;align-items:center;gap:10px}
.lRow input{flex:1;min-width:0}
.lVal{font:600 12px var(--mono);color:var(--green);min-width:62px;text-align:right;white-space:nowrap}
.lMeta{margin-top:4px;font:10.5px var(--mono);color:var(--faint)}
.field.dimmed{opacity:.35;pointer-events:none;transition:opacity .2s}

.veffRow{display:flex;align-items:center;gap:10px}
.veffRow small{color:var(--faint);font:11px var(--mono)}
input[type=number]{
  width:110px;
  font:600 14px var(--mono);
  color:var(--txt);
  background:var(--panel2);
  border:1px solid var(--line2);border-radius:4px;
  padding:7px 10px;
}
input[type=number]:focus{outline:none;border-color:var(--green)}

.run{display:flex;gap:8px;align-items:center;margin-top:4px}
.run .primary{
  flex:1;
  font:700 12px var(--mono);letter-spacing:.08em;text-transform:uppercase;
  color:var(--bg);
  background:var(--green);
  border:none;border-radius:4px;
  padding:9px 10px;cursor:pointer;
  transition:filter .12s;
}
.run .primary:hover{filter:brightness(1.12)}
select{
  font:600 11.5px var(--mono);
  color:var(--txt);
  background:var(--panel2);
  border:1px solid var(--line2);border-radius:4px;
  padding:8px 6px;cursor:pointer;
}

/* ---------- Mesures ---------- */
.meas{width:100%;border-collapse:collapse;font-size:12px}
.meas td{padding:6.5px 2px;border-bottom:1px dashed var(--line)}
.meas td:first-child{color:var(--muted)}
.meas td.val{
  text-align:right;font:600 13px var(--mono);
  color:var(--txt);white-space:nowrap;
}
.meas td.val.strong{color:var(--green);font-size:14px}
.ov{text-decoration:overline}
sub{font-size:.7em}

.formula{
  margin-top:12px;
  font:12px var(--mono);
  color:#bcd0de;
  background:var(--panel2);
  border-left:3px solid var(--amber);
  padding:10px 12px;
  border-radius:0 4px 4px 0;
  line-height:1.9;
  overflow-x:auto;white-space:nowrap;
}
.formula b{color:var(--amber)}
.formula .res{color:var(--green);font-weight:700;font-size:13px}

.note{
  margin-top:10px;
  font-size:11.8px;line-height:1.55;
  color:var(--muted);
}
.note.warn{color:#ffb35c}

/* ---------- Oscillogrammes ---------- */
.scope-panel{display:flex;flex-direction:column;min-width:0}
.scope-head{
  display:flex;justify-content:space-between;align-items:center;
  gap:14px;flex-wrap:wrap;margin-bottom:10px;
}
.scope-head h2{margin-bottom:0}
.legend{display:flex;gap:6px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  font:600 11px var(--mono);
  color:var(--txt);
  background:var(--panel2);
  border:1px solid var(--line2);
  border-radius:4px;
  padding:4px 9px;cursor:pointer;
  transition:opacity .12s;
}
.chip i{width:14px;height:4px;flex:none;display:block}
.chip.off{opacity:.32}
.chip.off i{background:var(--faint) !important}

.scope-wrap{position:relative;flex:1;min-height:560px}
#scope{
  position:absolute;inset:0;
  width:100%;height:100%;
  display:block;
  border:1px solid var(--line);
  border-radius:6px;
  background:#0c1117;
  cursor:crosshair;
  touch-action:none;
}
.tooltip{
  position:absolute;display:none;z-index:5;
  background:rgba(9,13,18,.95);
  border:1px solid var(--line2);
  border-radius:5px;
  padding:8px 11px;
  font:11px var(--mono);
  color:var(--txt);
  pointer-events:none;
  line-height:1.8;
  box-shadow:0 6px 18px rgba(0,0,0,.5);
}
.tooltip .th{color:var(--muted);border-bottom:1px dashed var(--line2);padding-bottom:3px;margin-bottom:3px}
.tooltip .sw{display:inline-block;width:10px;height:3px;margin-right:7px;vertical-align:middle}
.axis-note{
  margin-top:10px;
  font:10.5px var(--mono);
  color:var(--faint);letter-spacing:.02em;
  text-align:center;
}
.axis-note .ch{color:var(--t24)}
.axis-note .cd{color:var(--t13)}
.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;
}

/* ---------- Cartouche (bloc titre de dessin technique) ---------- */
.cartouche{
  display:flex;flex-wrap:wrap;
  max-width:1560px;margin:0 auto 18px;
  border:1px solid var(--line2);
  background:var(--panel2);
  font:600 9.5px var(--mono);
  letter-spacing:.14em;color:var(--muted);
  text-transform:uppercase;
}
.cartouche .c{
  padding:9px 14px;
  border-right:1px solid var(--line2);
  border-top:1px solid var(--line2);
  margin-top:-1px;
}
.cartouche .c:last-child{border-right:none}
.cartouche .fig{color:var(--amber);font-size:11px;letter-spacing:.2em}

/* ---------- Responsive ---------- */
@media (max-width:1120px){
  main{grid-template-columns:1fr}
  .scope-wrap{min-height:480px}
}