:root{--ink:#203c36;--green:#123c35;--green2:#2a5146;--accent:#c6dd80;--paper:#f5f5ef;--line:#dfe4da;--muted:#6d7b73;--orange:#e8590c;--red:#c92a2a;--white:#fff}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.5 "Segoe UI",Arial,sans-serif}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{opacity:.45;cursor:default}
[hidden]{display:none!important}
h1,h2,h3,p{margin-top:0}
p{color:var(--muted)}
.eyebrow{font-size:11px;letter-spacing:1.8px;font-weight:700;color:var(--muted);margin-bottom:10px}
.error{color:var(--red);min-height:1.5em}
.muted{color:var(--muted)}
.small{font-size:12px}

/* Boutons */
.primary{background:var(--green);color:#fff;border:0;border-radius:8px;padding:11px 18px;font-weight:600}
.primary:hover{background:var(--green2)}
.primary.small{padding:7px 13px;font-size:13px}
.quiet{background:none;border:1px solid var(--line);border-radius:8px;padding:8px 13px}
.quiet:hover{border-color:var(--ink)}
.ghost-btn{background:none;border:1px solid var(--line);border-radius:7px;padding:6px 11px;font-size:13px}
.ghost-btn:hover{border-color:var(--ink)}
.ghost-btn.small{padding:3px 9px;font-size:12px}
.danger{background:none;border:1px solid #f0c4c4;color:var(--red);border-radius:7px;padding:6px 11px;font-size:13px}
.danger:hover{background:#fff1f1}
.icon-btn{width:34px;height:34px;display:grid;place-items:center;background:none;border:1px solid transparent;border-radius:7px}
.icon-btn:hover:not(:disabled){border-color:var(--line);background:#fff}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

/* Connexion */
.auth-shell{display:grid;grid-template-columns:1.1fr 1fr;min-height:100vh}
.auth-story{background:var(--green);color:#f4f6eb;padding:56px;display:flex;flex-direction:column;justify-content:space-between}
.auth-story h1{font-size:40px;line-height:1.15;letter-spacing:-1.2px;font-weight:600}
.auth-story p{color:#b6c9bd;max-width:460px}
.auth-story small{color:#9bb8a9;letter-spacing:1px}
.auth-form{padding:56px;display:flex;flex-direction:column;justify-content:center;max-width:520px;width:100%;margin:auto}
.auth-form form{display:grid;gap:14px}
label{display:grid;gap:5px;font-size:13px;font-weight:600}
input,select,textarea{border:1px solid #cfd6cc;border-radius:7px;padding:8px 10px;background:#fff;font-weight:400}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);border-color:var(--green)}
.wordmark{font-size:42px;letter-spacing:-4px;font-weight:800;text-decoration:none;line-height:1;color:inherit}
.wordmark span{display:block;letter-spacing:4px;font-size:10px;margin:8px 0 0 4px}
.small-mark{font-size:30px;letter-spacing:-3px}

/* Bibliothèque */
.library{min-height:100vh}
.lib-head{display:flex;justify-content:space-between;align-items:center;padding:22px 40px;background:var(--green);color:#f4f6eb}
.lib-head .quiet{color:#f4f6eb;border-color:#3d6457}
.lib-actions{display:flex;gap:10px}
.lib-body{max-width:1180px;margin:0 auto;padding:40px}
.lib-title{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:26px}
.lib-title h1{font-size:32px;letter-spacing:-1px;margin:0}
.plan-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;display:flex;flex-direction:column;gap:10px;text-align:left}
.plan-card:hover{border-color:var(--green)}
.plan-card h3{margin:0;font-size:17px}
.plan-card .meta{font-size:12px;color:var(--muted)}
.plan-card .row{display:flex;gap:8px;margin-top:auto}
.empty{background:#fff;border:1px dashed #c9d1c6;border-radius:12px;padding:40px;text-align:center}

/* Atelier */
.studio{display:grid;grid-template-columns:76px 1fr 312px;grid-template-rows:54px 1fr;height:100vh;overflow:hidden}
.topbar{grid-column:1/-1;display:flex;align-items:center;gap:12px;padding:0 14px 0 0;background:#fff;border-bottom:1px solid var(--line);min-width:0}
.brand{width:76px;height:54px;border:0;background:var(--green);color:#fff;font-weight:800;font-size:20px;letter-spacing:-2px;line-height:1;flex:none}
.brand span{display:block;font-size:7px;letter-spacing:2.5px;margin-top:3px}
.plan-name{border:1px solid transparent;font-size:16px;font-weight:600;padding:6px 8px;min-width:120px;width:280px;background:transparent}
.plan-name:hover{border-color:var(--line)}
.save-state{font-size:12px;color:var(--muted);white-space:nowrap}
.save-state.dirty{color:#895a13}
.save-state.error{color:var(--red)}
.top-group{display:flex;gap:4px;align-items:center}
.top-group.right{margin-left:auto;gap:8px}
.segmented{display:flex;background:#eef0ea;border-radius:8px;padding:3px}
.segmented button{border:0;background:none;border-radius:6px;padding:5px 14px;font-size:13px;font-weight:600;color:var(--muted)}
.segmented button.active{background:#fff;color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.panel-toggle{display:none}

.toolbar{background:var(--green);display:flex;flex-direction:column;gap:2px;padding:8px 6px;overflow-y:auto}
.toolbar button{display:flex;flex-direction:column;align-items:center;gap:2px;border:0;background:none;color:#b6c9bd;border-radius:8px;padding:7px 2px;font-size:10px;line-height:1.1}
.toolbar button:hover{background:var(--green2);color:#fff}
.toolbar button.active{background:var(--accent);color:var(--green)}
.toolbar hr{border:0;border-top:1px solid #2f5a4e;margin:4px 6px;width:auto}

.stage{position:relative;display:grid;grid-template-rows:38px 1fr 30px;min-width:0;min-height:0;background:#fff}
.levelbar{display:flex;align-items:center;gap:6px;padding:0 10px;border-bottom:1px solid var(--line);background:#fafaf6;min-width:0;overflow-x:auto}
.levels{display:flex;gap:4px}
.levels button{border:1px solid transparent;background:none;border-radius:6px;padding:4px 11px;font-size:13px;color:var(--muted);white-space:nowrap}
.levels button.active{background:#fff;border-color:var(--line);color:var(--ink);font-weight:600}
.level-add{border:1px dashed #c9d1c6;background:none;border-radius:6px;padding:3px 10px;font-size:12px;color:var(--muted);white-space:nowrap}
.views3d{display:flex;gap:4px;margin-left:auto;align-items:center}
.views3d button[data-view]{border:1px solid transparent;background:none;border-radius:6px;padding:3px 9px;font-size:12px;color:var(--muted)}
.views3d button.active{background:#fff;border-color:var(--line);color:var(--ink);font-weight:600}
.canvas-wrap{position:relative;overflow:hidden;min-height:0;grid-row:2}
.canvas-wrap canvas{display:block;touch-action:none;cursor:crosshair}
.canvas-wrap canvas[data-tool=select]{cursor:default}
.canvas-wrap canvas:focus{outline:none}
.view3d{grid-row:2;position:relative;min-height:0;overflow:hidden;background:#eef1ec}
.view3d canvas{display:block}
.length-input{position:absolute;width:110px;padding:5px 8px;border:2px solid var(--orange);border-radius:6px;font-weight:600;box-shadow:0 4px 14px rgba(0,0,0,.15)}
.statusbar{display:flex;align-items:center;gap:14px;padding:0 10px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);background:#fafaf6;min-width:0}
.coords{font-variant-numeric:tabular-nums;white-space:nowrap;min-width:150px}
.hint{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toggles{display:flex;gap:12px;align-items:center;white-space:nowrap}
.toggles label{display:flex;flex-direction:row;gap:4px;align-items:center;font-weight:400;font-size:12px}
.toggles input{padding:0;margin:0}

.panel{border-left:1px solid var(--line);background:#fbfbf8;display:flex;flex-direction:column;min-height:0}
.tabs{display:flex;border-bottom:1px solid var(--line)}
.tabs button{flex:1;border:0;background:none;padding:11px 4px;font-size:13px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent}
.tabs button.active{color:var(--ink);border-bottom-color:var(--green)}
.tab-body{padding:16px;overflow-y:auto;flex:1}
.tab-body h3{font-size:15px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center;gap:8px}
.tab-body h4{font-size:12px;letter-spacing:1px;text-transform:uppercase;color:var(--muted);margin:18px 0 8px}
.form{display:grid;gap:11px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.check{display:flex;flex-direction:row;align-items:center;gap:8px;font-weight:400}
.check input{margin:0}
.readout{background:#fff;border:1px solid var(--line);border-radius:7px;padding:8px 10px;font-variant-numeric:tabular-nums}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.chip{display:inline-block;font-size:11px;background:#eef0ea;border-radius:20px;padding:1px 8px;color:var(--muted);font-weight:600}
.tips{font-size:12px;color:var(--muted);padding-left:16px;margin:0}
.tips li{margin-bottom:5px}
kbd{border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:0 4px;font-size:11px;background:#fff}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:6px 4px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:11px;color:var(--muted);font-weight:600;letter-spacing:.5px}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
tr.total td{font-weight:700;border-bottom:0}
td.warn{color:#895a13}
.total-box{display:grid;grid-template-columns:1fr auto;gap:4px 12px;background:#fff;border:1px solid var(--line);border-radius:9px;padding:12px;margin-bottom:14px}
.total-box b{font-variant-numeric:tabular-nums;text-align:right}

#notice{position:fixed;left:50%;bottom:44px;transform:translateX(-50%);background:var(--green);color:#fff;padding:10px 18px;border-radius:9px;z-index:50;box-shadow:0 8px 24px rgba(0,0,0,.2);max-width:90vw}
#notice.error{background:var(--red)}
dialog{border:0;border-radius:14px;padding:0;width:min(560px,94vw);box-shadow:0 20px 60px rgba(0,0,0,.25)}
dialog::backdrop{background:rgba(18,60,53,.35)}
.dialog-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px 0}
.dialog-head h2{margin:0;font-size:20px}
.icon-close{border:0;background:none;font-size:26px;line-height:1;color:var(--muted)}
#modal-content{padding:16px 22px 22px}
#modal-content .form{gap:14px}
.export-block{border:1px solid var(--line);border-radius:10px;padding:14px;display:grid;gap:10px;margin-bottom:12px}
.export-block h3{margin:0;font-size:15px}
.levels-check{display:flex;gap:14px;flex-wrap:wrap}

@media (max-width:1100px){
  .studio{grid-template-columns:64px 1fr}
  .panel{position:fixed;right:0;top:54px;bottom:0;width:min(330px,92vw);z-index:20;box-shadow:-10px 0 30px rgba(0,0,0,.12)}
  .studio:not(.panel-open) .panel{display:none}
  .panel-toggle{display:inline-block}
  .brand{width:64px}
  .plan-name{width:160px}
  .hint{display:none}
}
@media (max-width:760px){
  .auth-shell{grid-template-columns:1fr}
  .auth-story{padding:32px 20px}
  .auth-story h1{font-size:28px}
  .auth-form{padding:28px 20px}
  .lib-head{padding:16px}
  .lib-body{padding:20px 16px}
  .lib-title{flex-direction:column;align-items:stretch}
  .studio{grid-template-columns:1fr;grid-template-rows:auto 1fr 64px}
  .topbar{flex-wrap:wrap;gap:6px;padding:6px 8px 6px 0}
  .brand{height:44px;width:54px}
  .plan-name{flex:1;width:auto}
  .save-state,.top-group:not(.right){display:none}
  .top-group.right{margin-left:0}
  .toolbar{grid-row:3;flex-direction:row;overflow-x:auto;padding:6px}
  .toolbar button{min-width:56px}
  .toolbar hr{display:none}
  .stage{grid-row:2}
  .toggles label:nth-child(n+3){display:none}
  .panel{top:auto;height:55vh;width:100%;border-left:0;border-top:1px solid var(--line)}
}
.layers-table input,.layers-table select{width:100%;padding:5px 6px;font-size:13px}
.layers-table td{padding:4px 3px;vertical-align:middle}
.layers-table .cm-input{width:64px;text-align:right}
.row-tools{white-space:nowrap}
.icon-mini{border:1px solid var(--line);background:#fff;border-radius:5px;width:24px;height:26px;padding:0;font-size:13px;line-height:1}
.icon-mini:hover:not(:disabled){border-color:var(--ink)}
.comp-list{display:grid;gap:8px;margin-bottom:10px}
.comp{display:flex;justify-content:space-between;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:9px 10px}
.comp div{display:grid;gap:2px;font-size:13px}
#modal{width:min(640px,96vw)}