/* A viewport-sized reader: fit the complete sheet, including landscape courses. */
#lesson-dialog.document-dialog{width:calc(100vw - 20px);max-width:none;height:calc(100dvh - 20px);max-height:none;padding:0;overflow:hidden;border-radius:12px;margin:auto;color:#e6eef8;background:#101c30}
#lesson-dialog.document-dialog[open]{display:flex;flex-direction:column}
.document-dialog .dialog-top{position:static;flex:none;padding:6px 16px;min-height:40px}
.document-dialog .dialog-top button{padding:5px 12px;font-size:13px}
.document-dialog #lesson-body{flex:1;min-height:0;padding:0;overflow:hidden}
.document-dialog .document-reader{height:100%;display:flex;flex-direction:column;min-height:0}
.document-dialog .reader-heading{flex:none;background:#14243b;padding:10px 18px;border-bottom:1px solid #30445d}
.document-dialog .reader-breadcrumb{font-size:10px;margin:0 0 5px;gap:8px;letter-spacing:.4px}
.document-dialog .reader-breadcrumb span{padding:2px 6px;background:#223953;color:#b7d7f1}
#lesson-dialog.document-dialog .reader-heading h2{font-size:18px;line-height:1.25;color:#f1f6ff!important;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.document-dialog .reader-layout{flex:1;min-height:0;display:flex;flex-direction:column;position:relative}
.document-dialog .reader-syllabus{flex:none;display:flex;align-items:center;justify-content:space-between;padding:5px 16px;border:0;border-bottom:1px solid #30445d;position:relative;gap:12px}
.document-dialog .reader-syllabus summary{padding:5px 0;font-size:12px}
.document-dialog .reader-syllabus details[open]{position:absolute;left:12px;top:3px;z-index:5;width:min(360px,calc(100vw - 45px));max-height:50dvh;overflow:auto;background:#14243b;border:1px solid #456080;border-radius:10px;padding:10px;box-shadow:0 12px 30px #0006}
.document-dialog .reader-back{width:auto;margin:0 0 0 auto;padding:5px 9px;font-size:12px}
.document-dialog .reader-main{flex:1;display:flex;flex-direction:column;min-height:0;padding:0 12px 6px}
.document-dialog .reader-toolbar{flex:none;gap:7px;padding:7px 0;border-color:#30445d}
.document-dialog .reader-toolbar button,.document-dialog .reader-toolbar a,.document-dialog .reader-toolbar select{font-size:12px;padding:6px 8px;min-height:32px}
.document-dialog .reader-toolbar a{background:#233b56;color:#e4efff;border-color:#415773}
.document-dialog .reader-pages{width:auto;gap:7px;flex:none;margin-right:auto}
.document-dialog .reader-pages label{font-size:12px}
.document-dialog .reader-pages input{width:48px;padding:5px;font-size:13px}
.document-dialog .reader-toolbar select{max-width:145px;flex:none}
.document-dialog .reader-status{flex:none;min-height:0;padding:3px 0;font-size:11px;line-height:1.3;color:#a5bdd7}
.document-dialog .reader-stage{flex:1;min-height:0;height:auto;max-height:none;padding:8px;overflow:auto;scrollbar-gutter:auto;border:1px solid #30445d;border-radius:6px;background:#080f1b}
.document-dialog .reader-stage canvas{margin:0 auto;box-shadow:0 2px 12px #0005}
.document-dialog .reader-text{flex:none;padding:4px 0;font-size:11px}
.document-dialog .reader-text p{max-height:20dvh;margin:5px 0;padding:12px}
.document-dialog .reader-footer{flex:none;margin:0;gap:8px}
.document-dialog .reader-footer button{padding:4px 8px;font-size:11px;min-height:28px}
@media(max-width:650px){#lesson-dialog.document-dialog{width:100vw;height:100dvh;border:0;border-radius:0}.document-dialog .dialog-top{padding:4px 12px;min-height:34px}.document-dialog .reader-heading{padding:7px 12px}#lesson-dialog.document-dialog .reader-heading h2{font-size:15px}.document-dialog .reader-breadcrumb{font-size:9px;margin-bottom:3px}.document-dialog .reader-syllabus{padding:3px 12px}.document-dialog .reader-main{padding:0 6px 4px}.document-dialog .reader-toolbar{gap:5px;padding:5px 0}.document-dialog .reader-pages{flex:1;justify-content:space-between;width:100%}.document-dialog .reader-toolbar a{flex:1;text-align:center}.document-dialog .reader-toolbar select{flex:1;max-width:none;min-width:0}.document-dialog .reader-stage{padding:4px}.document-dialog .reader-footer{display:none}}
@media(max-height:500px){.document-dialog .reader-breadcrumb,.document-dialog .reader-syllabus,.document-dialog .reader-text,.document-dialog .reader-footer{display:none}.document-dialog .reader-heading{padding:4px 12px}.document-dialog .reader-pages{width:auto;flex:none}.document-dialog .reader-toolbar{flex-wrap:nowrap}.document-dialog .reader-toolbar a{font-size:10px}.document-dialog .reader-status{padding:1px 0}}
@media(max-width:650px){.document-dialog .reader-pages{flex:0 0 100%;margin:0}.document-dialog .reader-toolbar{display:grid;grid-template-columns:1fr 1fr}.document-dialog .reader-pages{grid-column:1/-1}.document-dialog .reader-toolbar select{width:100%;grid-column:1/-1}.document-dialog .reader-toolbar a{white-space:nowrap;padding:5px;font-size:11px}.document-dialog .reader-stage canvas{margin-block:0}}
@media(max-width:650px) and (max-height:500px){.document-dialog .reader-toolbar{display:flex;flex-wrap:wrap}.document-dialog .reader-pages{flex:1}.document-dialog .reader-toolbar select{width:auto;flex:1}.document-dialog .reader-toolbar a{display:none}}