:root{--brand:#267DF4;--ink:#111827;--muted:#667085;--line:#E4E7EC;--soft:#F3F6FB;--shell:min(1180px,calc(100% - 28px))}
*{box-sizing:border-box}body{margin:0;background:var(--soft);color:var(--ink);font-family:Arial,sans-serif;line-height:1.5}.shell{width:var(--shell);margin:auto}button,input,select{font:inherit}
header{background:#fff;border-bottom:1px solid var(--line)}.head{min-height:72px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px}.mark{width:48px;height:42px;border-radius:13px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:.82rem;font-weight:900}.brand>span:last-child{display:flex;flex-direction:column}.brand small{color:var(--muted);font-size:.74rem}
.main{padding:64px 0 90px}.hero{max-width:940px;margin-bottom:36px}.hero h1{font-size:clamp(3rem,7vw,6.2rem);line-height:.9;letter-spacing:-.07em;margin:16px 0}.hero p{font-size:1.1rem;color:var(--muted);max-width:800px}.eyebrow{color:var(--brand);font-size:.76rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
.workspace{display:grid;grid-template-columns:360px 1fr;gap:18px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 20px 60px rgba(15,23,42,.08)}.settings{position:sticky;top:20px}.settings h2,.pages-heading h2{margin:0;font-size:1.8rem}.form-grid{display:grid;gap:13px;margin:20px 0}label{display:flex;flex-direction:column;gap:7px;font-size:.82rem;font-weight:850}input,select{width:100%;border:1px solid #D5D9E2;border-radius:11px;padding:11px 12px;background:#fff}
.drop-zone{border:2px dashed #BBC3D1;border-radius:18px;display:grid;text-align:center;place-items:center;padding:26px 14px;cursor:pointer;background:#FAFBFC}.drop-zone.active{border-color:var(--brand);background:#EDF4FF}.drop-zone small{color:var(--muted)}.drop-icon{width:50px;height:50px;background:var(--brand);color:#fff;border-radius:15px;display:grid;place-items:center;font-size:1.5rem;margin-bottom:8px}
.actions{display:grid;gap:9px;margin-top:16px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:47px;border:1px solid transparent;border-radius:11px;padding:11px 15px;font-weight:900;cursor:pointer}.button.primary{background:var(--brand);color:#fff}.button.secondary{background:#fff;border-color:var(--line)}.button.full{width:100%}.button:disabled{opacity:.45;cursor:not-allowed}.status{min-height:24px;color:var(--muted);font-weight:800;margin-top:12px}
.pages-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:18px}.pages-heading span:last-child{color:var(--muted);font-weight:800}.pages{display:grid;gap:10px}.page-card{display:grid;grid-template-columns:42px 100px 1fr auto;align-items:center;gap:13px;border:1px solid var(--line);border-radius:16px;padding:10px;background:#fff}.page-card.dragging{opacity:.45}.page-number{width:34px;height:34px;border-radius:10px;background:#EDF4FF;color:var(--brand);display:grid;place-items:center;font-weight:900}.thumb-wrap{height:80px;display:grid;place-items:center;background:#EEF1F5;border-radius:10px;overflow:hidden}.thumb-wrap img{max-width:100%;max-height:100%;transition:.2s}.page-meta{display:flex;flex-direction:column;min-width:0}.page-meta strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.page-meta span{color:var(--muted);font-size:.78rem}.page-actions{display:flex;gap:5px}.page-actions button{width:34px;height:34px;border:1px solid var(--line);background:#fff;border-radius:9px;cursor:pointer}.empty-state{min-height:300px;display:grid;place-items:center;align-content:center;color:var(--muted);text-align:center}.empty-state strong{color:var(--ink);font-size:1.3rem}
dialog{width:min(1000px,calc(100% - 24px));height:min(820px,calc(100% - 24px));padding:0;border:0;border-radius:18px;box-shadow:0 30px 100px rgba(0,0,0,.35)}dialog::backdrop{background:rgba(10,13,20,.72)}.dialog-head{height:58px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--line)}.dialog-head button{border:0;background:transparent;font-size:1.7rem}iframe{width:100%;height:calc(100% - 58px);border:0}
footer{background:#090B10;color:#fff;padding:30px 0}
@media(max-width:850px){.workspace{grid-template-columns:1fr}.settings{position:static}.page-card{grid-template-columns:38px 80px 1fr}.page-actions{grid-column:2/-1;justify-content:flex-end}}@media(max-width:540px){.main{padding-top:40px}.panel{padding:18px}.page-card{grid-template-columns:36px 70px 1fr}.page-meta span{display:none}.page-actions button{width:32px}}