:root{--bg:#f4f5f2;--surface:#fff;--surface-soft:#f7f8f5;--ink:#121412;--muted:#6b706b;--line:#e1e3dd;--line-strong:#c8cbc4;--accent:#0d0e0d;--danger:#b42318;--shadow:0 18px 55px rgba(20,22,20,.08)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(180deg,hsla(0,0%,100%,.72),transparent 320px),var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;letter-spacing:0}button,input{font:inherit}button{cursor:pointer}.shell{width:min(1120px,calc(100vw - 32px));margin:0 auto;padding:30px 0}.topbar{justify-content:space-between;gap:18px;margin-bottom:22px}.brand,.limit,.topbar{display:flex;align-items:center}.brand{gap:12px}.brand span{display:block;font-size:22px;font-weight:800;line-height:1}.brand small{display:block;margin-top:4px;color:var(--muted);font-size:12px;font-weight:680}.brandMark{display:grid;width:42px;height:42px;place-items:center;border-radius:12px;background:var(--ink);color:#fff}.limit{gap:8px;color:var(--muted);font-size:14px;font-weight:640}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 360px;grid-gap:18px;gap:18px;align-items:start}.primaryPane,.resultPane{border:1px solid var(--line);border-radius:18px;background:hsla(0,0%,100%,.92);box-shadow:var(--shadow)}.primaryPane{padding:24px}.resultPane{min-height:560px;padding:22px}.paneIntro{max-width:620px;margin-bottom:20px}.paneIntro h1{margin:0;font-size:clamp(32px,4.8vw,54px);line-height:1;letter-spacing:0}.paneIntro p{max-width:520px;margin:12px 0 0;color:var(--muted);font-size:15px;line-height:1.5;font-weight:560}.tabs{display:inline-flex;gap:4px;padding:4px;border:1px solid var(--line);border-radius:12px;background:var(--surface-soft)}.chip,.iconButton,.secondaryButton,.tab{border:0;color:var(--ink)}.tab{display:inline-flex;align-items:center;justify-content:center;min-width:116px;gap:8px;padding:10px 14px;border-radius:9px;background:transparent;color:var(--muted);font-size:14px;font-weight:720}.tab.active{background:#fff;color:var(--ink);box-shadow:0 1px 2px rgba(20,22,20,.08)}.chip:active,.iconButton:active,.primaryButton:active,.secondaryButton:active,.tab:active{transform:translateY(1px)}.toolStack{display:grid;grid-gap:16px;gap:16px;margin-top:18px}.dropZone{display:grid;min-height:230px;place-items:center;align-content:center;grid-gap:10px;gap:10px;width:100%;border:1.5px dashed var(--line-strong);border-radius:16px;background:radial-gradient(circle at 18% 24%,rgba(18,20,18,.04),transparent 28%),var(--surface-soft);color:var(--muted);text-align:center;transition:border-color .16s ease,background .16s ease,transform .16s ease;cursor:pointer}.dropZone input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.dropZone strong{max-width:min(520px,90%);overflow-wrap:anywhere;color:var(--ink);font-size:24px;line-height:1.16}.dropZone span{max-width:min(500px,90%);overflow-wrap:anywhere;font-size:14px;font-weight:600}.dropZone.dragging{border-color:var(--accent);background:#fff;transform:translateY(-1px)}.downloadList,.fileList{display:grid;grid-gap:8px;gap:8px}.details div,.downloadItem,.fileRow,.retrieveBox{border:1px solid var(--line);border-radius:13px;background:var(--surface)}.downloadItem,.fileRow{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;grid-gap:12px;gap:12px;padding:11px}.downloadItem{grid-template-columns:auto minmax(0,1fr);cursor:default}.downloadItem div:not(.fileThumb),.fileMeta{display:grid;min-width:0;grid-gap:4px;gap:4px}.fileThumb{display:block;width:46px;height:46px;border:1px solid var(--line);border-radius:11px;background:var(--surface-soft);object-fit:cover}.fileThumbIcon{display:grid;place-items:center;align-content:center;grid-gap:1px;gap:1px;color:var(--muted)}.fileThumbIcon span{max-width:40px;overflow:hidden;color:var(--muted);font-size:9px;font-weight:800;letter-spacing:.02em;text-overflow:ellipsis;white-space:nowrap}.fileMeta input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font-size:14px;font-weight:740}.fileMeta input:focus{text-decoration:underline;text-underline-offset:4px}.downloadItem span,.fileMeta span{color:var(--muted);font-size:12px;font-weight:620}.downloadItem span,.downloadItem strong,.fileMeta span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.downloadItem strong,.renameInput{font-size:14px}.renameInput{width:100%;min-width:0;border:1px solid var(--line-strong);border-radius:8px;background:var(--surface-soft);color:var(--ink);padding:7px 9px;font-weight:740;outline:0}.renameInput:focus{border-color:var(--accent);background:#fff}.fileActions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end}.fileActionButton{min-height:30px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);padding:0 9px;font-size:12px;font-weight:720}.fileActionButton.dark{border-color:var(--ink);background:var(--ink);color:#fff}.fileActionButton.danger{color:var(--danger)}.fileActionButton:disabled{cursor:not-allowed;opacity:.48}.downloadListTitle{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;font-weight:760;letter-spacing:.04em;text-transform:uppercase}.iconButton{display:grid;width:36px;height:36px;flex:none;place-items:center;border-radius:10px;background:var(--surface-soft);text-decoration:none}.fieldGroup{display:grid;grid-gap:10px;gap:10px}.fieldGroup label,.retrieveBox label{color:var(--muted);font-size:12px;font-weight:760;letter-spacing:.04em;text-transform:uppercase}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{display:inline-flex;align-items:center;min-height:38px;gap:7px;padding:8px 13px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);font-size:14px;font-weight:700}.chip.selected{border-color:var(--accent);background:var(--ink);color:#fff}.primaryButton,.secondaryButton{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:12px;font-size:14px;font-weight:780;text-decoration:none}.primaryButton{border:0;background:var(--accent);color:#fff}.primaryButton:disabled{cursor:not-allowed;opacity:.45}.secondaryButton{flex:1 1;border:1px solid var(--line);background:#fff;color:var(--ink)}.retrieveBox{display:grid;grid-gap:10px;gap:10px;padding:18px}.codeInputWrap{display:flex;align-items:center;min-height:58px;gap:10px;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:var(--surface-soft)}.codeInputWrap input{width:100%;border:0;outline:0;background:transparent;color:var(--ink);font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:24px;font-weight:780;letter-spacing:0}.message,.statusMessage{margin:14px 0 0;font-size:14px;font-weight:680}.message{color:var(--danger)}.resultHeader,.statusMessage{color:var(--muted)}.resultHeader{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:780;letter-spacing:.04em;text-transform:uppercase}.resultStack{display:grid;grid-gap:14px;gap:14px;margin-top:20px}.transferCode{display:grid;min-height:100px;place-items:center;border-radius:15px;background:var(--ink);color:#fff;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:40px;font-weight:820;letter-spacing:0}.buttonRow{display:flex;gap:8px}.details{display:grid;grid-gap:8px;gap:8px;margin:0}.details div{display:grid;grid-template-columns:82px minmax(0,1fr);grid-gap:10px;gap:10px;padding:11px}.details dt{color:var(--muted);font-size:12px;font-weight:720}.details dd{margin:0;overflow-wrap:anywhere;font-size:13px;font-weight:650}.emptyState{display:grid;min-height:460px;place-items:center;align-content:center;grid-gap:12px;gap:12px;color:var(--muted);text-align:center}.emptyState p{max-width:260px;margin:0;font-size:15px;line-height:1.5;font-weight:560}.previewOverlay{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:24px;background:rgba(18,20,18,.42)}.previewModal{display:grid;width:min(920px,100%);max-height:min(760px,calc(100vh - 48px));overflow:hidden;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:0 28px 90px rgba(0,0,0,.24)}.previewHeader{display:flex;align-items:center;justify-content:space-between;gap:14px;border-bottom:1px solid var(--line);padding:14px 16px}.previewHeader div{display:grid;min-width:0;grid-gap:3px;gap:3px}.previewHeader strong{overflow:hidden;font-size:15px;text-overflow:ellipsis;white-space:nowrap}.previewHeader span{color:var(--muted);font-size:12px;font-weight:620}.previewBody{display:grid;min-height:420px;background:var(--surface-soft)}.previewBody iframe,.previewBody img{width:100%;height:min(660px,calc(100vh - 146px));border:0}.previewBody img{object-fit:contain;padding:16px}.previewFallback{display:grid;place-items:center;align-content:center;grid-gap:12px;gap:12px;min-height:420px;color:var(--muted);text-align:center}.previewFallback p{margin:0;font-weight:650}.spin{animation:spin .85s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:880px){.topbar,.workspace{display:grid}.workspace{grid-template-columns:1fr}.resultPane{min-height:auto}.emptyState{min-height:220px}}@media (max-width:560px){.shell{width:min(100vw - 20px,1120px);padding:18px 0}.brand span{font-size:20px}.limit{font-size:13px}.primaryPane,.resultPane{border-radius:16px;padding:18px}.paneIntro h1{font-size:34px}.buttonRow,.tabs{display:grid;width:100%}.tab{width:100%}.dropZone{min-height:200px}.dropZone strong{font-size:20px}.fileRow{grid-template-columns:minmax(0,1fr) auto}.fileRow>svg{display:none}.transferCode{min-height:88px;font-size:34px}.previewOverlay{padding:12px}.previewModal{max-height:calc(100vh - 24px);border-radius:14px}.previewBody{min-height:320px}.previewBody iframe,.previewBody img{height:calc(100vh - 122px)}}