:root{--b:#1a73e8;--l:#e5e9f0;--m:#6b7280}*{box-sizing:border-box}.ctx{max-width:calc(100vw - 16px);max-height:calc(100vh - 16px);overflow:auto;border-radius:10px;box-shadow:0 8px 30px #0002}.ctx button{color:#202124;font-size:14px}.ctx button:hover{background:#f1f5f9!important}.row,.tile{touch-action:manipulation}body{margin:0;font:14px system-ui;color:#202124}.app{display:flex;min-height:100vh}.side{width:230px;background:#f8fafd;border-right:1px solid var(--l);padding:24px 16px}.brand{font-size:21px;font-weight:700;color:var(--b);margin-bottom:30px}main{flex:1;padding:24px 4vw}.top{display:flex;justify-content:space-between;align-items:center;gap:15px}.actions{display:flex;gap:7px;flex-wrap:wrap}.btn{padding:9px 12px;border:1px solid var(--l);border-radius:10px;background:white;text-decoration:none;color:#334155;cursor:pointer}.active,.btn:hover{color:var(--b);border-color:#b8d2f7}.crumbs{margin:28px 0 18px;color:var(--b)}.surface{border:1px solid var(--l);border-radius:16px;overflow:hidden}.head,.row{display:grid;grid-template-columns:1fr 100px;gap:12px;align-items:center;padding:0 20px}.head{height:42px;background:#f8fafd;color:var(--m)}.row{min-height:64px;border-top:1px solid var(--l);text-decoration:none;color:#202124}.name{display:flex;align-items:center;gap:12px;min-width:0}.name strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.meta{text-align:right;color:var(--m)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px;padding:18px}.tile{min-height:130px;border:1px solid var(--l);border-radius:14px;padding:16px;text-decoration:none;color:#202124}.tile strong{display:block;margin-top:20px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tile small{color:var(--m)}.storage{margin-top:35px;padding-top:15px;border-top:1px solid var(--l);color:var(--m);font-size:12px}@media(max-width:700px){.side{display:none}main{padding:16px 10px}.top{display:block}.actions{margin-top:14px}.head,.row{grid-template-columns:1fr 70px;padding:0 10px}.grid{grid-template-columns:repeat(2,1fr);padding:8px;gap:8px}}

.drop-zone{margin:14px 0;padding:18px;border:2px dashed #c6d8f5;border-radius:12px;text-align:center;color:#6b7280;background:#f8fbff}.drop-zone.over{border-color:#1a73e8;background:#eef5ff}
.upload-actions{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.upload-actions .btn{font-size:13px}@media(max-width:560px){.upload-actions{display:grid;grid-template-columns:1fr 1fr}.upload-actions .btn{width:100%;min-height:42px}.drop-zone{font-size:13px;padding:16px 10px}}
.tree{display:flex;flex-direction:column;gap:4px;margin-top:14px}.tree-link{display:block;padding:7px 8px;border-radius:7px;color:#475569;text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tree-link:hover{background:#eaf2ff;color:#1a73e8}.tree-link:first-child{font-weight:600;color:#1a73e8}


.drop-zone{display:none!important;position:fixed;left:24px;right:24px;bottom:24px;z-index:1000;box-shadow:0 8px 30px #1a73e833}.drop-zone.drag-active,.drop-zone.progress-visible{display:block!important}
.upload-actions{display:none!important}.upload-actions.open{display:flex!important}
.crumbs{display:flex;align-items:center;gap:0;min-height:48px;margin:18px 0;padding:7px 14px;background:#fff;border:1px solid #e2e8f0;border-radius:14px;box-shadow:0 2px 8px #1f29370d;overflow-x:auto;white-space:nowrap;color:#64748b}.crumbs a{display:inline-flex;align-items:center;max-width:240px;padding:7px 8px;border-radius:8px;color:#2563eb;text-decoration:none;overflow:hidden;text-overflow:ellipsis}.crumbs a:hover{background:#eff6ff;color:#1d4ed8}.crumbs span{padding:0 3px;color:#94a3b8;font-size:18px}.crumbs a:last-child{color:#334155;font-weight:600}@media(max-width:600px){.crumbs{margin:12px 0;padding:6px 8px;border-radius:11px}.crumbs a{max-width:170px;font-size:13px}}
.surface{background:#fff;border:1px solid #e3e8ef;border-radius:18px;box-shadow:0 4px 18px #1f29370d}.head{font-size:13px;font-weight:600;letter-spacing:.01em;border-bottom:1px solid #e8edf3}.row{transition:background .15s ease,box-shadow .15s ease}.row:hover{background:#f8fbff;box-shadow:inset 3px 0 #1a73e8}.name>span{width:26px;text-align:center;font-size:20px}.tile{background:#fff;transition:transform .15s ease,box-shadow .15s ease}.tile:hover{transform:translateY(-2px);box-shadow:0 8px 22px #1f29371a}
.top{padding:4px 0 18px;border-bottom:1px solid #eef2f7}.top h1{margin:0;font-size:28px;font-weight:650;letter-spacing:-.02em;color:#1f2937}.actions{align-items:center}.actions .btn{min-height:40px;background:#fff;border-radius:10px}.actions .active{background:#eff6ff;color:#1a73e8;border-color:#bfdbfe}@media(max-width:700px){.top h1{font-size:23px}.actions{gap:6px}.actions .btn{padding:8px 9px;font-size:12px}}
.crumbs a:not(:first-child)::before{content:'📁';font-size:14px;margin-right:5px}.crumbs a:last-child{background:#f1f5f9}.crumbs a:last-child::before{content:'📂'}

.selection-toolbar{display:none;gap:8px;align-items:center;flex-wrap:wrap;margin:0 0 14px;padding:10px 12px;border:1px solid var(--l);border-radius:12px;background:#f8fafd}.selection-toolbar.active{display:flex}.selection-toolbar button{padding:7px 10px;border:1px solid var(--l);border-radius:8px;background:#fff;color:#334155;cursor:pointer}.selection-toolbar button:hover{border-color:#b8d2f7;color:var(--b)}.row.selected,.tile.selected{outline:2px solid #8ab4f8;outline-offset:-2px;background:#eff6ff}@media(max-width:560px){.selection-toolbar{font-size:12px}.selection-toolbar button{padding:7px 8px}}
.upload-progress{display:none}
#uploadProgress{display:none;position:fixed;right:24px;bottom:24px;z-index:1001;width:min(420px,calc(100vw - 32px));padding:18px;background:#fff;border:1px solid var(--l);border-radius:14px;box-shadow:0 8px 30px #0002}.upload-progress.active,#uploadProgress.active{display:block}#uploadProgress b{display:block;margin-bottom:10px}.upload-bar{height:10px;background:#e8eef7;border-radius:8px;overflow:hidden}.upload-bar i{display:block;width:0;height:100%;background:#1a73e8;transition:width .15s}.upload-percent{margin-top:8px;font-size:22px;font-weight:700;color:#1a73e8}.upload-files,.upload-current,.upload-amount{margin-top:5px;color:#64748b}.upload-cancel{margin-top:14px;padding:8px 12px;border:1px solid #e5e9f0;border-radius:8px;background:#fff;cursor:pointer}@media(max-width:560px){#uploadProgress{right:10px;bottom:10px;width:calc(100vw - 20px)}}


.crumbs{display:flex;align-items:center;gap:7px;white-space:nowrap;overflow-x:auto;max-width:100%;padding-bottom:4px}.crumbs a:last-child{font-weight:600;color:#174ea6}.crumbs::-webkit-scrollbar{height:5px}.crumbs::-webkit-scrollbar-thumb{background:#d5deeb;border-radius:5px}
/* Mobile navigation and final responsive overrides */
.mobile-menu{display:none}.drawer-backdrop{display:none}.touch-target{min-width:42px;min-height:42px}
@media(max-width:700px){body{overflow-x:hidden}.app{min-width:0}.side{display:block;position:fixed;z-index:10002;inset:0 auto 0 0;width:min(290px,86vw);transform:translateX(-105%);transition:transform .2s;box-shadow:8px 0 28px #0003;overflow-y:auto}.side.drawer-open{transform:translateX(0)}.drawer-backdrop{position:fixed;inset:0;z-index:10001;background:#0006}.drawer-backdrop.active{display:block}main{width:100%;min-width:0;padding:12px 10px}.top{display:flex;align-items:flex-start;gap:8px}.top h1{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:22px}.actions{justify-content:flex-end;min-width:0}.actions .btn,.actions button,.upload-actions .btn,.ctx button{min-height:42px}.mobile-menu{display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:42px;border:1px solid var(--l);border-radius:10px;background:#fff;font-size:20px}.head,.row{grid-template-columns:minmax(0,1fr) 74px;padding:0 10px}.row{min-height:64px}.name{gap:8px}.name strong{max-width:calc(100vw - 125px)}.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:8px}.tile{min-width:0;padding:10px}.selection-toolbar{position:sticky;top:4px;z-index:20}.selection-toolbar button{min-height:42px}.ctx{max-width:calc(100vw - 16px)}.preview-modal{padding:0}.preview-box{width:100vw;height:100dvh;border-radius:0}.preview-head{min-height:56px}.preview-close{width:42px;height:42px}.preview-download{min-height:42px;display:inline-flex;align-items:center}.drop-zone{left:10px;right:10px;bottom:10px}.upload-actions{grid-template-columns:1fr 1fr}.upload-actions .btn{width:100%;min-height:42px}}



/* Full-screen PDF viewer */



.row[draggable="true"]{cursor:grab}.row.is-dragging{opacity:.45}.row.drop-target{outline:3px solid #1a73e8;outline-offset:-3px;background:#eaf2ff!important;box-shadow:inset 0 0 0 2px #1a73e8}