:root{--bg:#eef1f7;--panel:#fff;--text:#172033;--muted:#70798d;--primary:#5b46e8;--primary-dark:#4734c7;--accent:#ff3f86;--danger:#df3953;--border:#e1e5ee;--shadow:0 14px 40px rgba(29,36,68,.13)}
*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--text);background:var(--bg);overflow:hidden}button,input,select,textarea{font:inherit}button{border:0;border-radius:10px;padding:10px 13px;color:#fff;background:var(--primary);cursor:pointer;font-weight:750;transition:.18s ease}button:hover{background:var(--primary-dark);transform:translateY(-1px)}button:active{transform:none}button.secondary{background:#f0f2f8;color:#273047}button.secondary:hover{background:#e4e7f1}button.accent{background:linear-gradient(135deg,#ff3f86,#f32168);box-shadow:0 7px 18px rgba(255,63,134,.25)}button.danger{background:#fff0f2;color:var(--danger);border:1px solid #ffd3dc}.full,.file-button{width:100%;display:block;margin-bottom:9px;text-align:center}.file-button{padding:12px 14px;border-radius:11px;background:linear-gradient(135deg,var(--primary),#785df4);color:#fff;cursor:pointer;font-weight:800;box-shadow:0 8px 18px rgba(91,70,232,.18)}.file-button span{font-size:18px;margin-right:4px}.topbar{height:76px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:10px 18px;position:relative;z-index:10;box-shadow:0 2px 14px rgba(20,28,52,.05)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;color:#fff;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 7px 20px rgba(91,70,232,.28)}.brand h1{margin:0;font-size:21px}.brand h1 span{font-size:10px;background:#efeafe;color:var(--primary);padding:4px 6px;border-radius:6px;vertical-align:middle}.brand p{margin:3px 0 0;color:var(--muted);font-size:12px}.top-actions{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.separator{width:1px;height:28px;background:var(--border);margin:0 3px}.icon-btn{width:38px;padding:9px 0;font-size:18px}.workspace{display:grid;grid-template-columns:260px minmax(420px,1fr) 300px;height:calc(100vh - 76px)}.panel{background:var(--panel);overflow-y:auto;padding:18px}.left-panel{border-right:1px solid var(--border)}.right-panel{border-left:1px solid var(--border)}.panel section{padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid var(--border)}.panel section:last-child{border-bottom:0}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-title h2{font-size:14px;margin:0}.section-title span{font-size:9px;font-weight:900;letter-spacing:1px;color:#929aad;background:#f3f5f9;padding:4px 6px;border-radius:5px}.panel label{display:block;font-size:11px;font-weight:800;color:#4d566d;margin:10px 0}.panel input,.panel select,.panel textarea{width:100%;margin-top:6px;border:1px solid var(--border);border-radius:9px;padding:9px;background:#fff;color:var(--text);outline:none}.panel input:focus,.panel select:focus,.panel textarea:focus{border-color:#8e7ff5;box-shadow:0 0 0 3px rgba(91,70,232,.10)}.panel input[type=color]{height:40px;padding:4px}.panel input[type=range]{padding:0;border:0;box-shadow:none}.drop-zone{border:1.5px dashed #c8cede;background:#f8f9fc;border-radius:10px;padding:12px;text-align:center;color:var(--muted);font-size:11px;margin-bottom:9px;transition:.2s}.drop-zone.dragover{border-color:var(--primary);background:#f1efff;color:var(--primary)}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.tool-card{min-height:68px;background:#f7f8fc;color:var(--text);border:1px solid #edf0f5;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px}.tool-card:hover{background:#eeebff;color:var(--primary);border-color:#d9d1ff}.tool-card b{font-size:22px}.tool-card small{font-size:10px;font-weight:800}.tool-grid.compact .tool-card{min-height:58px}.button-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-bottom:9px}.canvas-zone{display:flex;min-width:0;flex-direction:column}.canvas-toolbar{min-height:54px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:9px;padding:8px 13px;flex-wrap:wrap}.canvas-toolbar label{font-size:11px;font-weight:800;color:#4d566d}.canvas-toolbar select{margin-left:5px;padding:7px;border:1px solid var(--border);border-radius:8px;max-width:245px}.color-inline{display:flex;align-items:center;gap:5px}.color-inline input{width:30px;height:30px;padding:2px;border:1px solid var(--border);border-radius:7px}.zoom-controls{display:flex;align-items:center;gap:5px;margin-left:auto}.zoom-controls span{min-width:48px;text-align:center;font-size:11px;font-weight:800;color:var(--muted)}#status{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:6px}#status i{width:7px;height:7px;border-radius:50%;background:#31b86b}.canvas-scroll{flex:1;overflow:auto;padding:42px;background-color:#e8ebf2;background-image:linear-gradient(45deg,#dde1ea 25%,transparent 25%),linear-gradient(-45deg,#dde1ea 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#dde1ea 75%),linear-gradient(-45deg,transparent 75%,#dde1ea 75%);background-size:22px 22px;background-position:0 0,0 11px,11px -11px,-11px 0}.canvas-wrapper{width:max-content;margin:auto;background:#fff;box-shadow:0 18px 55px rgba(22,29,52,.23);transform-origin:top left;transition:transform .12s}.canvas-container{background:#fff}.bottom-bar{height:30px;background:#fff;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 12px;color:var(--muted);font-size:10px}.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:8px}.format-buttons{display:grid;grid-template-columns:repeat(5,1fr);gap:5px;margin:8px 0}.format-buttons button{padding:8px}.empty-state{padding:18px 12px;border:1px dashed var(--border);border-radius:10px;text-align:center;color:var(--muted);font-size:11px;background:#fafbfc}.project-list{display:grid;gap:7px;margin-top:10px}.project-item{display:flex;gap:5px;align-items:center}.project-item button:first-child{flex:1;text-align:left;background:#f0f2f8;color:var(--text);overflow:hidden;text-overflow:ellipsis}.project-item .delete-project{background:#fff0f2;color:var(--danger);padding:8px 10px}.toast{position:fixed;right:18px;bottom:18px;background:#1c2334;color:#fff;padding:12px 16px;border-radius:11px;opacity:0;transform:translateY(12px);transition:.22s;pointer-events:none;z-index:99;box-shadow:var(--shadow);font-size:13px}.toast.show{opacity:1;transform:translateY(0)}#propertyFields,#imageTools{display:none}
@media(max-width:1120px){.workspace{grid-template-columns:230px minmax(420px,1fr) 270px}.brand p{display:none}.top-actions button:not(.icon-btn){padding:9px 10px;font-size:12px}}
@media(max-width:900px){body{overflow:auto}.workspace{grid-template-columns:210px minmax(420px,1fr);height:calc(100vh - 76px)}.right-panel{display:none}.topbar{height:auto;min-height:76px;align-items:flex-start}.canvas-toolbar{position:sticky;top:0;z-index:3}}
@media(max-width:680px){.topbar{flex-direction:column}.workspace{display:block;height:auto}.left-panel{border-right:0}.canvas-zone{min-height:720px}.canvas-toolbar select{max-width:170px}.bottom-bar span:last-child{display:none}}
/* Version 3 — gestion multipage */
.workspace{grid-template-columns:285px minmax(460px,1fr) 310px}.pages-section{max-height:43vh;overflow:hidden;display:flex;flex-direction:column}.pages-list{display:grid;gap:9px;overflow:auto;padding:2px 4px 4px 0}.page-card{display:grid;grid-template-columns:28px 72px 1fr;align-items:center;gap:8px;background:#f7f8fc;color:var(--text);border:2px solid transparent;padding:7px;text-align:left;min-height:82px}.page-card:hover{background:#f1efff}.page-card.active{border-color:var(--primary);background:#f0edff;box-shadow:0 6px 15px rgba(91,70,232,.13)}.page-number{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#e7eaf2;font-size:10px;font-weight:900}.page-card.active .page-number{background:var(--primary);color:#fff}.page-thumb{height:66px;background:#fff;border:1px solid var(--border);display:grid;place-items:center;overflow:hidden;border-radius:5px}.page-thumb img{max-width:100%;max-height:100%;display:block}.page-thumb em{font-size:9px;color:#9aa2b3;font-style:normal}.page-name{font-size:11px;font-weight:800;overflow:hidden;text-overflow:ellipsis}.project-stats{display:flex;justify-content:space-between;align-items:center;background:#f7f8fc;border:1px solid var(--border);border-radius:10px;padding:10px;margin-top:10px;font-size:11px}.project-stats span{color:var(--muted)}
.modal[hidden]{display:none}.modal{position:fixed;inset:0;background:rgba(14,20,36,.72);z-index:100;display:grid;place-items:center;padding:24px}.modal-card{width:min(760px,95vw);max-height:92vh;overflow:auto;background:#fff;border-radius:18px;box-shadow:0 30px 90px rgba(0,0,0,.35);padding:20px}.preview-card{width:min(1100px,96vw)}.modal-head{display:flex;justify-content:space-between;align-items:flex-start;border-bottom:1px solid var(--border);padding-bottom:14px;margin-bottom:16px}.modal-head h2{margin:0;font-size:20px}.modal-head p{margin:4px 0 0;color:var(--muted);font-size:12px}.book-preview{min-height:520px;background:#e7eaf0;display:grid;grid-template-columns:56px 1fr 56px;align-items:center;border-radius:13px;padding:18px}.book-preview>img{display:block;max-width:100%;max-height:68vh;margin:auto;background:#fff;box-shadow:0 14px 40px rgba(22,29,52,.25)}.preview-nav{width:44px;height:60px;border-radius:12px;font-size:28px;background:#fff;color:var(--primary);box-shadow:0 5px 15px rgba(0,0,0,.12)}.preview-thumbs{display:flex;gap:8px;overflow-x:auto;padding:14px 2px 2px}.preview-thumbs button{position:relative;flex:0 0 76px;height:100px;padding:3px;background:#fff;border:2px solid var(--border)}.preview-thumbs button.active{border-color:var(--primary)}.preview-thumbs img{width:100%;height:100%;object-fit:contain}.preview-thumbs span{position:absolute;right:4px;bottom:4px;background:#1b2234;color:#fff;padding:2px 5px;border-radius:4px;font-size:9px}.projects-modal-list{display:grid;gap:9px}.project-row{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:8px;border:1px solid var(--border);border-radius:11px;padding:10px}.project-row div{display:flex;flex-direction:column;gap:3px}.project-row span{font-size:10px;color:var(--muted)}
@media(max-width:1200px){.workspace{grid-template-columns:250px minmax(430px,1fr) 280px}.page-card{grid-template-columns:24px 58px 1fr}.page-thumb{height:56px}.top-actions{gap:4px}.top-actions button{font-size:11px;padding:8px 9px}}


/* Version 4 — espace de travail défilable et navigation professionnelle */
.workspace{min-height:0;overflow:hidden}
.canvas-zone{min-height:0;min-width:0;overflow:hidden}
.panel{min-height:0}
.canvas-scroll{
  flex:1 1 auto;
  min-height:0;
  min-width:0;
  overflow:auto;
  position:relative;
  scrollbar-gutter:stable both-edges;
  overscroll-behavior:contain;
  touch-action:pan-x pan-y;
}
.canvas-scroll::-webkit-scrollbar{width:13px;height:13px}
.canvas-scroll::-webkit-scrollbar-track{background:#dfe3ec}
.canvas-scroll::-webkit-scrollbar-thumb{background:#aeb6c8;border:3px solid #dfe3ec;border-radius:10px}
.canvas-scroll::-webkit-scrollbar-thumb:hover{background:#8f99af}
.canvas-wrapper{
  display:block;
  margin:0 auto;
  transform:none!important;
  transition:none;
  position:relative;
  flex:none;
}
.canvas-wrapper>.canvas-container{transform-origin:top left;will-change:transform}
.canvas-scroll.is-panning{cursor:grabbing;user-select:none}
.canvas-scroll.can-pan{cursor:grab}
.canvas-scroll.is-panning .canvas-container{pointer-events:none}
.bottom-bar .navigation-help{font-weight:700;color:#667087}
@media(max-width:900px){.workspace{overflow:hidden}.canvas-zone{min-height:0}}