:root {
  --ink:#1a1a2e; --ink-soft:#3d3d5c; --ink-faint:#8888aa;
  --paper:#f7f5f0; --paper-warm:#eeeae0; --paper-card:#fdfcf9;
  --accent:#c84b31; --accent-light:#f0d4ce;
  --accent-2:#2d6a4f; --accent-2-light:#d0e8dc;
  --border:#d8d4c8; --border-strong:#b8b2a4;
  --shadow:rgba(26,26,46,.08); --shadow-lg:rgba(26,26,46,.16);
  --green:#22c55e; --red:#ef4444;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Instrument Sans',sans-serif;background:var(--paper);color:var(--ink);min-height:100vh}

/* ── HEADER ──────────────────────────────────── */
header{
  background:var(--ink);color:var(--paper);
  padding:0 40px;display:flex;align-items:stretch;
  position:sticky;top:0;z-index:200;
  box-shadow:0 2px 20px var(--shadow-lg);height:56px;
}
.header-brand{
  display:flex;align-items:center;gap:12px;
  padding-right:32px;border-right:1px solid rgba(255,255,255,.09);flex-shrink:0;
}
.header-brand h1{font-family:'DM Serif Display',serif;font-size:1.38rem;letter-spacing:-.02em}
.header-brand h1 em{font-style:italic;color:#c8b89a}
.header-brand .sub{font-family:'DM Mono',monospace;font-size:.65rem;color:#8888aa;letter-spacing:.08em;text-transform:uppercase}

/* ── TABS ────────────────────────────────────── */
.tabs{display:flex;align-items:stretch;padding-left:28px;flex:1}
.tab-btn{
  display:flex;align-items:center;gap:7px;padding:0 20px;
  background:none;border:none;border-bottom:2.5px solid transparent;
  color:#8888aa;font-family:'Instrument Sans',sans-serif;
  font-size:.84rem;font-weight:500;cursor:pointer;
  transition:color .15s,border-color .15s;white-space:nowrap;
}
.tab-btn:hover{color:#c8b89a}
.tab-btn.active{color:var(--paper);border-bottom-color:#c8b89a}
.tab-badge{
  background:rgba(255,255,255,.12);color:#c8b89a;
  font-family:'DM Mono',monospace;font-size:.62rem;
  padding:1px 7px;border-radius:20px;letter-spacing:.04em;
}
.tab-btn.active .tab-badge{background:#c84b31;color:#fff}
.api-pill{
  margin-left:auto;display:flex;align-items:center;gap:7px;
  font-family:'DM Mono',monospace;font-size:.67rem;color:#8888aa;flex-shrink:0;
}
.api-dot{width:7px;height:7px;border-radius:50%;background:#555;transition:background .3s}
.api-dot.ok{background:var(--green);box-shadow:0 0 6px var(--green)}
.api-dot.err{background:var(--red);box-shadow:0 0 6px var(--red)}

/* ── PANELS ──────────────────────────────────── */
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ── SHARED COMPONENTS ───────────────────────── */
.card{background:var(--paper-card);border:1px solid var(--border);border-radius:12px;padding:24px;box-shadow:0 2px 12px var(--shadow)}
.section-head{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.section-head h2{font-family:'DM Serif Display',serif;font-size:1.1rem;color:var(--ink)}
.badge{background:var(--ink);color:var(--paper);font-family:'DM Mono',monospace;font-size:.67rem;padding:2px 8px;border-radius:20px;letter-spacing:.06em}
.badge.green{background:var(--accent-2)}
button{cursor:pointer;border:none;font-family:'Instrument Sans',sans-serif;font-weight:600;transition:all .15s}

/* ── EDITOR ──────────────────────────────────── */
.editor-grid{
  max-width:1100px;
  margin:0 auto;
  padding:32px 28px 80px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:26px;
}

.col-left{
  display:flex;
  flex-direction:column;
  gap:26px;
}

.col-right{
  display:flex;
  flex-direction:column;
}
.export-col{grid-column:1/-1}
.eleves-add{display:flex;gap:8px;margin-bottom:14px}
.eleves-add input{
  flex:1;padding:9px 14px;border:1.5px solid var(--border);border-radius:8px;
  font-family:'DM Mono',monospace;font-size:.85rem;background:var(--paper);color:var(--ink);outline:none;transition:border-color .2s;
}
.eleves-add input:focus{border-color:var(--ink-soft)}
.eleves-add input::placeholder{color:var(--ink-faint)}
.btn-add{background:var(--ink);color:var(--paper);padding:9px 18px;border-radius:8px;font-size:.85rem;white-space:nowrap}
.btn-add:hover{background:var(--ink-soft)}
.eleves-list{display:flex;flex-wrap:wrap;gap:6px;max-height:230px;overflow-y:auto;padding:2px 0}
.eleve-tag{
  display:flex;align-items:center;gap:6px;background:var(--paper-warm);border:1px solid var(--border);
  border-radius:20px;padding:4px 10px 4px 12px;font-family:'DM Mono',monospace;font-size:.77rem;color:var(--ink-soft);animation:tagIn .2s ease;transition:border-color .15s,background .15s;
}
.eleve-tag:hover{border-color:var(--ink-soft);background:var(--accent-2-light)}
.eleve-tag-name{cursor:pointer;}
@keyframes tagIn{from{opacity:0;transform:scale(.85)}to{opacity:1;transform:scale(1)}}
.eleve-tag button{background:none;color:var(--ink-faint);font-size:1rem;padding:0;width:16px;height:16px;display:flex;align-items:center;justify-content:center;border-radius:50%}
.eleve-tag button:hover{background:var(--accent-light);color:var(--accent)}
.eleves-hint{font-size:.75rem;color:var(--ink-faint);margin-top:10px;font-family:'DM Mono',monospace}
.contrainte-form{display:flex;flex-direction:column;gap:12px}
label{font-size:.75rem;font-weight:600;color:var(--ink-soft);letter-spacing:.05em;text-transform:uppercase;display:block;margin-bottom:5px}
select{
  width:100%;padding:9px 12px;border:1.5px solid var(--border);border-radius:8px;
  font-family:'DM Mono',monospace;font-size:.82rem;background:var(--paper);color:var(--ink);outline:none;
  cursor:pointer;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238888aa' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;transition:border-color .2s;
}
select:focus{border-color:var(--ink-soft)}
.multi-select{width:100%;min-height:78px;padding:6px;border:1.5px solid var(--border);border-radius:8px;font-family:'DM Mono',monospace;font-size:.81rem;background:var(--paper);color:var(--ink);outline:none;transition:border-color .2s}
.multi-select:focus{border-color:var(--ink-soft)}
.multi-select option{padding:3px 6px}
.multi-select option:checked{background:var(--ink);color:var(--paper)}
.checkbox-list{max-height:120px;overflow-y:auto;border:1.5px solid var(--border);border-radius:8px;padding:4px;display:flex;flex-direction:column;gap:2px;transition:border-color .2s}
.checkbox-list:focus-within{border-color:var(--ink-soft)}
.checkbox-item{display:flex;align-items:center;gap:8px;padding:4px 8px;border-radius:6px;cursor:pointer;font-family:'DM Mono',monospace;font-size:.81rem;color:var(--ink);transition:background .1s}
.checkbox-item:hover{background:var(--paper-warm)}
.checkbox-item input[type=checkbox]{accent-color:var(--ink);width:14px;height:14px;flex-shrink:0;cursor:pointer}
.checkbox-item span{pointer-events:none}
.hint-text{font-size:.71rem;color:var(--ink-faint);font-family:'DM Mono',monospace;margin-top:3px}
.rang-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.rang-row input[type=number]{width:100%;padding:9px 12px;border:1.5px solid var(--border);border-radius:8px;font-family:'DM Mono',monospace;font-size:.84rem;background:var(--paper);color:var(--ink);outline:none;transition:border-color .2s}
.rang-row input:focus{border-color:var(--ink-soft)}
.radio-group{display:flex;gap:8px}
.radio-pill{flex:1;text-align:center}
.radio-pill input[type=radio]{display:none}
.radio-pill label{display:block;padding:8px 4px;border:1.5px solid var(--border);border-radius:8px;font-family:'DM Mono',monospace;font-size:.81rem;font-weight:500;color:var(--ink-faint);cursor:pointer;text-transform:none;letter-spacing:0;transition:all .15s}
.radio-pill input:checked+label{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.radio-pill label:hover{border-color:var(--ink-soft);color:var(--ink-soft)}
.btn-ajouter{background:var(--accent);color:#fff;padding:11px 20px;border-radius:9px;font-size:.87rem;letter-spacing:.02em;width:100%;margin-top:4px}
.btn-ajouter:hover{background:#a83a22}
.contraintes-list{display:flex;flex-direction:column;gap:8px;margin-top:6px;max-height:270px;overflow-y:auto}
.contrainte-item{background:var(--paper-warm);border:1px solid var(--border);border-radius:10px;padding:12px 14px;display:flex;justify-content:space-between;align-items:flex-start;gap:10px;animation:tagIn .2s ease;cursor:pointer;transition:border-color .15s,box-shadow .15s}
.contrainte-item:hover{border-color:var(--ink-soft);box-shadow:0 2px 8px var(--shadow)}
.contrainte-nom{font-family:'DM Mono',monospace;font-size:.81rem;font-weight:500;color:var(--ink);margin-bottom:5px}
.contrainte-chips{display:flex;flex-wrap:wrap;gap:4px}
.chip{font-family:'DM Mono',monospace;font-size:.68rem;padding:2px 8px;border-radius:12px;border:1px solid}
.chip.cote{background:var(--accent-light);color:var(--accent);border-color:#e8c4bc}
.chip.ensemble{background:#e8e4f8;color:#5548a0;border-color:#ccc8e8}
.chip.rang{background:#fef3d4;color:#8b6914;border-color:#f0dfa0}
.chip.col{background:var(--accent-2-light);color:var(--accent-2);border-color:#b8d8c8}
.chip.voisinage{background:#e8f4fd;color:#1a5a8a;border-color:#b8d8f0}
.btn-del{background:none;color:var(--ink-faint);font-size:1.1rem;padding:0;flex-shrink:0;width:22px;height:22px;display:flex;align-items:center;justify-content:center;border-radius:6px}
.btn-del:hover{background:var(--accent-light);color:var(--accent)}
.export-zone{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:start}
.json-preview{background:var(--ink);color:#c8e6c9;font-family:'DM Mono',monospace;font-size:.77rem;line-height:1.65;padding:20px;border-radius:10px;max-height:300px;overflow-y:auto;white-space:pre}
.json-preview .key{color:#90caf9}.json-preview .str{color:#c8e6c9}.json-preview .num{color:#ffcc80}.json-preview .null{color:#ef9a9a}
.export-actions{display:flex;flex-direction:column;gap:9px;min-width:166px}
.btn-export{background:var(--accent-2);color:#fff;padding:12px 20px;border-radius:10px;font-size:.87rem;white-space:nowrap;letter-spacing:.02em;display:flex;align-items:center;gap:8px}
.btn-export:hover{background:#235c3f}
.btn-reset{background:none;color:var(--ink-faint);padding:10px 20px;border-radius:10px;font-size:.82rem;border:1.5px solid var(--border)}
.btn-reset:hover{border-color:var(--accent);color:var(--accent)}
.stats-bar{display:flex;gap:20px;margin-bottom:16px;padding:13px 18px;background:var(--paper-warm);border:1px solid var(--border);border-radius:10px;flex-wrap:wrap}
.stat{text-align:center}
.stat-num{font-family:'DM Serif Display',serif;font-size:1.5rem;color:var(--ink);line-height:1}
.stat-label{font-size:.7rem;color:var(--ink-faint);font-family:'DM Mono',monospace;text-transform:uppercase;letter-spacing:.06em;margin-top:2px}
.stat-divider{width:1px;background:var(--border);align-self:stretch}
.empty-state{text-align:center;padding:26px 16px;color:var(--ink-faint);font-family:'DM Mono',monospace;font-size:.79rem}
.empty-state svg{display:block;margin:0 auto 10px;opacity:.3}
/* -- Panneau flottant --------------------------*/
.floating-export{
  position:fixed;
  bottom:24px;
  right:24px;

  background:var(--ink);
  color:white;

  padding:16px 18px;
  border-radius:12px;

  display:flex;
  flex-direction:column;
  gap:10px;

  box-shadow:0 10px 30px rgba(0,0,0,.2);
  z-index:300;
}

.floating-stats{
  display:flex;
  gap:16px;
  font-family:'DM Mono',monospace;
  font-size:.75rem;
}

.floating-stats strong{
  font-size:1.1rem;
  display:block;
}

.floating-export button{
  background:var(--accent);
  color:white;
  border:none;
  border-radius:8px;
  padding:8px 14px;
  font-size:.8rem;
}

.floating-export button.gen{
  background:var(--accent-2);
}
.floating-export .stat-num{
  font-size:1.2rem;
  color:white;
}

.floating-export .stat-label{
  color:#bbb;
}
.floating-stats{
  display:flex;
  gap:18px;
  margin-bottom:6px;
}

.floating-stats .stat{
  text-align:center;
}
/* ── GENERATOR ───────────────────────────────── */
.generator-layout{display:grid;grid-template-columns:294px 1fr;height:calc(100vh - 56px);overflow:hidden}
.gen-panel{background:var(--paper-card);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}
.gen-section{padding:16px 18px;border-bottom:1px solid var(--border);flex-shrink:0}
.gen-section.scrollable{flex:1;overflow-y:auto;border-bottom:none}
.gen-label{font-family:'DM Mono',monospace;font-size:.67rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:11px}
.gen-summary{background:var(--paper-warm);border:1px solid var(--border);border-radius:8px;padding:11px 14px;display:flex;gap:20px}
.gen-sum-n{font-family:'DM Serif Display',serif;font-size:1.35rem;color:var(--ink);line-height:1}
.gen-sum-l{font-size:.67rem;color:var(--ink-faint);font-family:'DM Mono',monospace;text-transform:uppercase;letter-spacing:.05em;margin-top:2px}
.param-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:9px}
.param-row label{font-size:.77rem;color:var(--ink-soft);text-transform:none;letter-spacing:0;font-weight:400}
.param-row input[type=number]{background:var(--paper-warm);border:1.5px solid var(--border);border-radius:7px;color:var(--ink);font-family:'DM Mono',monospace;font-size:.81rem;padding:5px 10px;width:88px;outline:none;transition:border-color .2s}
.param-row input:focus{border-color:var(--ink-soft)}
.btn-generate{width:100%;background:var(--ink);color:var(--paper);border-radius:9px;font-family:'DM Mono',monospace;font-size:.87rem;font-weight:500;letter-spacing:.04em;padding:12px;display:flex;align-items:center;justify-content:center;gap:9px;margin-top:4px}
.btn-generate:hover{background:var(--ink-soft)}
.btn-generate:disabled{background:var(--border);color:var(--ink-faint);cursor:not-allowed}
.score-display{display:flex;align-items:baseline;gap:8px;margin-bottom:7px}
.score-big{font-family:'DM Serif Display',serif;font-size:2.2rem;line-height:1;color:var(--ink);transition:color .4s}
.score-big.perfect{color:var(--accent-2)}
.score-big.bad{color:var(--accent)}
.score-lbl{font-family:'DM Mono',monospace;font-size:.7rem;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.06em}
.score-bar-wrap{height:5px;background:var(--border);border-radius:3px;overflow:hidden;margin-bottom:13px}
.score-bar-fill{height:100%;border-radius:3px;background:var(--ink-faint);transition:width .8s cubic-bezier(.34,1.2,.64,1),background .4s}
.score-bar-fill.perfect{background:var(--accent-2)}
.score-bar-fill.bad{background:var(--accent)}
.dl-row{display:flex;gap:8px;margin-top:8px}
.btn-dl{flex:1;background:none;border:1.5px solid var(--border);color:var(--ink-soft);border-radius:8px;font-size:.78rem;padding:8px 10px;display:flex;align-items:center;justify-content:center;gap:6px;font-family:'DM Mono',monospace}
.btn-dl:hover{border-color:var(--accent-2);color:var(--accent-2)}
.violation-item{background:#fff5f5;border:1px solid #fecaca;border-radius:8px;padding:8px 12px;font-size:.75rem;color:#b91c1c;font-family:'DM Mono',monospace;line-height:1.4;margin-bottom:6px;animation:tagIn .2s}
.no-violations{font-family:'DM Mono',monospace;font-size:.79rem;color:var(--accent-2);display:flex;align-items:center;gap:8px}
.gen-canvas{background:var(--paper-warm);display:flex;flex-direction:column;overflow:hidden}
.gen-toolbar{padding:11px 22px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;background:var(--paper-card);flex-shrink:0}
.toolbar-info{font-family:'DM Mono',monospace;font-size:.74rem;color:var(--ink-faint)}
.gen-body{flex:1;display:flex;align-items:center;justify-content:center;overflow:auto;padding:28px;
  background:repeating-linear-gradient(45deg,transparent,transparent 20px,rgba(0,0,0,.015) 20px,rgba(0,0,0,.015) 40px)}
.gen-empty{text-align:center;color:var(--ink-faint);font-family:'DM Mono',monospace}
.gen-empty-icon{font-size:48px;opacity:.2;margin-bottom:14px}
.gen-empty h3{font-family:'DM Serif Display',serif;font-size:1.05rem;color:var(--ink-soft);margin-bottom:5px}
.gen-empty p{font-size:.78rem}
.gen-loader{display:none;flex-direction:column;align-items:center;gap:13px}
.gen-loader.on{display:flex}
.loader-ring{width:38px;height:38px;border:2.5px solid var(--border);border-top-color:var(--ink);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loader-step{font-family:'DM Mono',monospace;font-size:.77rem;color:var(--ink-faint);max-width:200px;text-align:center}
.plan-img{display:none;max-width:100%;max-height:100%;border-radius:8px;box-shadow:0 8px 40px rgba(26,26,46,.22);animation:fadeUp .4s ease}
.plan-img.on{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ── MISC ────────────────────────────────────── */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:4px}
#toast-container{position:fixed;bottom:26px;right:26px;display:flex;flex-direction:column;gap:8px;z-index:999;pointer-events:none;align-items:flex-end}
.toast{background:var(--ink);color:var(--paper);padding:11px 18px;border-radius:10px;font-family:'DM Mono',monospace;font-size:.81rem;box-shadow:0 4px 24px var(--shadow-lg);transform:translateY(20px);opacity:0;transition:all .3s cubic-bezier(.34,1.56,.64,1);pointer-events:none;white-space:nowrap}
.toast.show{transform:translateY(0);opacity:1}
@media(max-width:820px){
  .editor-grid{grid-template-columns:1fr;padding:16px 14px 60px}
  .export-col{grid-column:1}
  .export-zone{grid-template-columns:1fr}
  .generator-layout{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .gen-panel{height:auto;overflow:visible}
  header{padding:0 14px}
  .tabs{padding-left:10px}
  .tab-btn{padding:0 10px;font-size:.78rem}
  .header-brand .sub{display:none}
}