:root {
  --bg: #f4f5f8; --panel: #ffffff; --text: #1b1f24; --muted: #667085; --line: #e3e6ec;
  --accent: #673de6; --accent-text: #ffffff; --accent-soft: #efe9ff; --sel: #e2d8ff;
  --danger: #c62828; --ok: #1a7f37; --shadow: 0 6px 24px rgba(20, 20, 40, .18);
  --safe-b: env(safe-area-inset-bottom, 0px); --safe-t: env(safe-area-inset-top, 0px);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317; --panel: #1b1e24; --text: #e8eaed; --muted: #98a2b3; --line: #2c3139;
    --accent: #9a7bff; --accent-text: #120d26; --accent-soft: #272041; --sel: #382d63;
    --danger: #ff7b72; --ok: #56d364; --shadow: 0 6px 24px rgba(0, 0, 0, .5);
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; }
body { font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); overscroll-behavior-y: contain; }
[hidden] { display: none !important; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input { font: inherit; color: var(--text); }

#boot { display: grid; place-items: center; height: 100%; }
.spin { width: 36px; height: 36px; border: 4px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: sp 0.8s linear infinite; }
@keyframes sp { to { transform: rotate(360deg); } }

/* login */
#login { min-height: 100%; display: grid; place-items: center; padding: 24px 18px; }
#loginForm { width: min(420px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px 20px; box-shadow: var(--shadow); }
#loginForm .logo { font-size: 44px; text-align: center; }
#loginForm h1 { text-align: center; margin: 4px 0 8px; font-size: 24px; }
#loginForm label { display: block; margin: 14px 0 6px; font-size: 14px; color: var(--muted); }
#loginForm input { width: 100%; padding: 14px; font-size: 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }
#code { letter-spacing: 6px; text-align: center; font-size: 22px; }
.note { color: var(--muted); text-align: center; margin: 0; font-size: 14px; }
.err { color: var(--danger); min-height: 1.4em; margin: 10px 0 0; font-size: 14px; }
.primary { background: var(--accent); color: var(--accent-text); border-radius: 10px; padding: 14px 18px; font-weight: 600; }
#loginBtn { width: 100%; margin-top: 8px; font-size: 17px; }
.primary:disabled { opacity: .6; }

/* app bars */
#top, #selbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 4px; padding: calc(8px + var(--safe-t)) 8px 8px; background: var(--accent); color: var(--accent-text); min-height: 56px; }
#selbar { background: var(--accent-soft); color: var(--text); border-bottom: 1px solid var(--line); }
.ib { width: 44px; height: 44px; border-radius: 50%; font-size: 20px; display: grid; place-items: center; flex: none; }
.ib:active { background: rgba(127, 127, 127, .25); }
.ib.txt { width: auto; padding: 0 14px; border-radius: 22px; font-size: 15px; font-weight: 600; }
#title, #selCount { flex: 1; font-size: 18px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 0 4px; }
#searchRow { padding: 8px 12px; background: var(--panel); border-bottom: 1px solid var(--line); display: flex; gap: 8px; align-items: center; }
#searchAll { flex: none; padding: 10px 6px; font-size: 14px; }
#filter { flex: 1; min-width: 0; padding: 11px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }
#crumbs { display: flex; gap: 2px; align-items: center; overflow-x: auto; white-space: nowrap; padding: 8px 12px; background: var(--panel); border-bottom: 1px solid var(--line); scrollbar-width: none; }
#crumbs::-webkit-scrollbar { display: none; }
#crumbs button { color: var(--accent); padding: 6px 8px; border-radius: 8px; font-size: 14px; }
#crumbs button:last-child { font-weight: 700; color: var(--text); }
#crumbs i { color: var(--muted); font-style: normal; }
#clip { position: sticky; top: calc(56px + var(--safe-t)); z-index: 15; display: flex; gap: 8px; align-items: center; padding: 8px 12px; background: var(--accent-soft); border-bottom: 1px solid var(--line); font-size: 14px; }
#clip span { flex: 1; }
#clip .primary { padding: 8px 14px; font-size: 14px; }
#clip .link { padding: 8px; }
.link { color: var(--accent); font-weight: 600; }

/* list */
#list { padding-bottom: calc(110px + var(--safe-b)); }
.item { display: flex; align-items: center; gap: 4px; padding: 0 4px 0 8px; min-height: 62px; background: var(--panel); border-bottom: 1px solid var(--line); user-select: none; -webkit-user-select: none; }
.item.sel { background: var(--sel); }
.item.cut { opacity: .5; }
.item .ico { position: relative; overflow: hidden; width: 46px; height: 46px; border-radius: 12px; font-size: 24px; display: grid; place-items: center; flex: none; background: var(--bg); }
.item .ico .th { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.item.sel .ico .th { display: none; }
.item.sel .ico { background: var(--accent); color: var(--accent-text); font-size: 22px; }
.item .body { flex: 1; min-width: 0; padding: 10px 8px; text-align: left; align-self: stretch; display: flex; flex-direction: column; justify-content: center; }
.item .nm { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item .nm.dir { font-weight: 700; }
.item .sub { font-size: 12.5px; color: var(--muted); margin-top: 1px; }
.item .dots { width: 44px; height: 44px; font-size: 20px; color: var(--muted); flex: none; }
#empty { text-align: center; color: var(--muted); padding: 60px 24px; }

#fab { position: fixed; right: 18px; bottom: calc(18px + var(--safe-b)); width: 58px; height: 58px; border-radius: 18px; background: var(--accent); color: var(--accent-text); font-size: 30px; box-shadow: var(--shadow); z-index: 25; }
#actions { position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; display: flex; background: var(--panel); border-top: 1px solid var(--line); padding-bottom: var(--safe-b); box-shadow: 0 -4px 18px rgba(0, 0, 0, .12); }
#actions button { flex: 1; padding: 9px 2px 8px; font-size: 12px; display: grid; justify-items: center; gap: 2px; }
#actions button span { font-size: 20px; }
#actions button:disabled { opacity: .35; }
#actions .danger { color: var(--danger); }

/* sheet & dialog */
#sheet, #modal { position: fixed; inset: 0; z-index: 60; background: rgba(0, 0, 0, .45); display: flex; }
#sheet { align-items: flex-end; }
#sheet .panel { width: 100%; max-height: 80%; overflow: auto; background: var(--panel); border-radius: 18px 18px 0 0; padding: 8px 8px calc(12px + var(--safe-b)); animation: up .18s ease-out; }
@keyframes up { from { transform: translateY(40px); opacity: .4; } }
#sheetTitle { padding: 12px 14px 8px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#sheetBody button { display: flex; align-items: center; gap: 14px; width: 100%; padding: 14px; border-radius: 12px; text-align: left; font-size: 16px; }
#sheetBody button:active { background: var(--accent-soft); }
#sheetBody button.danger { color: var(--danger); }
#sheetBody button span { width: 26px; text-align: center; font-size: 20px; }
#modal { align-items: center; justify-content: center; padding: 18px; }
#modal .box { width: min(440px, 100%); background: var(--panel); border-radius: 16px; padding: 18px; box-shadow: var(--shadow); }
#modal h3 { margin: 0 0 8px; }
#mBody p { margin: 6px 0; color: var(--muted); }
#mBody input { width: 100%; padding: 13px; font-size: 17px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }
#mBody ul { margin: 6px 0; padding-left: 20px; max-height: 150px; overflow: auto; }
#mBtns { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; flex-wrap: wrap; }
#mBtns button { padding: 11px 16px; border-radius: 10px; font-weight: 600; border: 1px solid var(--line); }
#mBtns button.primary { border-color: var(--accent); }
#mBtns button.danger { color: var(--danger); }
#mBtns button.primary.danger { background: var(--danger); color: #fff; border-color: var(--danger); }

#toasts { position: fixed; left: 12px; right: 12px; top: calc(66px + var(--safe-t)); display: grid; gap: 8px; z-index: 80; pointer-events: none; justify-items: center; }
.toast { max-width: 480px; padding: 11px 16px; border-radius: 12px; background: #2b2f36; color: #fff; box-shadow: var(--shadow); font-size: 14px; }
.toast.err { background: #a52121; } .toast.ok { background: #1f6f3a; }

#uploads { position: fixed; left: 10px; right: 10px; bottom: calc(86px + var(--safe-b)); z-index: 40; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); padding: 10px 12px; max-height: 38%; overflow: auto; }
.uhead { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.urow { display: grid; grid-template-columns: 1fr 44px; gap: 4px 8px; align-items: center; font-size: 13px; padding: 3px 0; }
.urow .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.urow .pct { text-align: right; color: var(--muted); }
.urow .bar { grid-column: 1 / -1; height: 5px; background: var(--line); border-radius: 3px; overflow: hidden; }
.urow .bar div { height: 100%; width: 0; background: var(--accent); transition: width .15s; }
.urow.done .bar div { background: var(--ok); } .urow.fail .bar div { background: var(--danger); }

@media (min-width: 760px) {
  #list, #crumbs, #clip, #searchRow { max-width: 860px; margin-left: auto; margin-right: auto; }
  #list { border-left: 1px solid var(--line); border-right: 1px solid var(--line); }
  #crumbs, #clip, #searchRow { width: 100%; }
}

/* shared-files banner */
#share { position: sticky; top: calc(56px + var(--safe-t)); z-index: 14; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; padding: 8px 12px; background: #fff4d6; color: #3d2f00; border-bottom: 1px solid var(--line); font-size: 14px; }
@media (prefers-color-scheme: dark) { #share { background: #3a3012; color: #ffe9a3; } }
#share span { flex: 1 1 200px; word-break: break-word; }
#share .primary { padding: 8px 14px; font-size: 14px; }
#share .link { padding: 8px; color: inherit; text-decoration: underline; }

/* editor + viewer overlays */
#editor, #viewer { position: fixed; inset: 0; z-index: 50; display: flex; flex-direction: column; background: var(--bg); }
.obar { display: flex; align-items: center; gap: 4px; padding: calc(8px + var(--safe-t)) 8px 8px; background: var(--accent); color: var(--accent-text); min-height: 56px; flex: none; }
.obar.dark { background: #0b0c0f; color: #fff; }
.obar > div { flex: 1; min-width: 0; font-size: 17px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 0 4px; }
.obar .ib.txt:disabled { opacity: .45; }
#edText { flex: 1; width: 100%; border: 0; outline: 0; resize: none; padding: 12px 14px; background: var(--panel); color: var(--text); font: 14px/1.5 ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; tab-size: 4; white-space: pre-wrap; overflow: auto; }
#edText.nowrap { white-space: pre; }
#edInfo, #vInfo { flex: none; padding: 7px 14px calc(7px + var(--safe-b)); font-size: 12.5px; color: var(--muted); background: var(--panel); border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 10px; }
#edInfo .dirty { color: var(--danger); font-weight: 700; }
#viewer { background: #000; }
#vStage { flex: 1; overflow: auto; display: grid; place-items: center; background: #000; touch-action: pan-x pan-y pinch-zoom; }
#vImg { max-width: 100%; max-height: 100%; object-fit: contain; }
#vImg.zoom { max-width: none; max-height: none; object-fit: unset; cursor: zoom-out; }
#vStage:has(#vImg:not(.zoom)) #vImg { cursor: zoom-in; }
#viewer #vInfo { background: #0b0c0f; color: #cfd4dc; border-top-color: #222; justify-content: center; }
.nav { position: absolute; top: 50%; transform: translateY(-50%); width: 46px; height: 76px; font-size: 40px; color: #fff; background: rgba(0, 0, 0, .35); border-radius: 12px; z-index: 2; }
#vPrev { left: 6px; } #vNext { right: 6px; }

/* favourites row, panels, properties, pull to refresh */
#favs { display: flex; gap: 8px; overflow-x: auto; padding: 8px 12px; background: var(--panel); border-bottom: 1px solid var(--line); scrollbar-width: none; }
#favs::-webkit-scrollbar { display: none; }
.chip { flex: none; min-height: 40px; padding: 0 14px; border-radius: 20px; background: var(--accent-soft); font-size: 14px; white-space: nowrap; }
#panel { position: fixed; inset: 0; z-index: 50; display: flex; flex-direction: column; background: var(--bg); }
#pBody { flex: 1; overflow: auto; background: var(--panel); }
#pInfo { flex: none; padding: 8px 14px calc(8px + var(--safe-b)); font-size: 12.5px; color: var(--muted); background: var(--panel); border-top: 1px solid var(--line); }
#pBody .empty { text-align: center; color: var(--muted); padding: 60px 24px; }
.prow { display: flex; align-items: center; gap: 10px; min-height: 64px; padding: 8px 8px 8px 12px; border-bottom: 1px solid var(--line); }
.prow .pi { width: 40px; height: 40px; border-radius: 10px; background: var(--bg); display: grid; place-items: center; font-size: 20px; flex: none; }
.prow .pt { flex: 1; min-width: 0; text-align: left; }
.prow .pt b { display: block; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prow .pt small { display: block; color: var(--muted); font-size: 12.5px; overflow-wrap: anywhere; }
button.prow { width: 100%; text-align: left; }
.prow .pb { flex: none; min-height: 44px; min-width: 44px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--line); font-weight: 600; }
.prow .pb.primary { border-color: var(--accent); padding: 0 14px; }
#ptr { position: fixed; top: calc(60px + var(--safe-t)); left: 50%; transform: translateX(-50%); z-index: 70; background: var(--panel); color: var(--text); border: 1px solid var(--line); border-radius: 18px; padding: 8px 16px; font-size: 14px; box-shadow: var(--shadow); pointer-events: none; }
.prop { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.prop b { font-weight: 600; color: var(--muted); flex: none; }
.prop span { text-align: right; overflow-wrap: anywhere; }
#mBody .presets { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
#mBody .presets button { padding: 8px 12px; border: 1px solid var(--line); border-radius: 16px; font-size: 13.5px; min-height: 40px; }
#vVid { max-width: 100%; max-height: 100%; background: #000; }
#vAudBox { text-align: center; color: #fff; padding: 24px; }
#vAudBox .big { font-size: 84px; line-height: 1.2; }
#vAudBox audio { width: min(92vw, 480px); margin-top: 12px; }

/* security additions */
#recToggle { display: block; margin: 10px auto 0; padding: 6px; font-size: 14px; }
#code.rec { letter-spacing: 2px; font-size: 18px; }
#roBar { padding: 8px 12px; background: #fff4d6; color: #5c4400; border-bottom: 1px solid var(--line); font-size: 14px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
@media (prefers-color-scheme: dark) { #roBar { background: #3a2f10; color: #ffe39a; } }
#app.ro #fab, #app.ro [data-act="cut"], #app.ro [data-act="delete"] { display: none; }
.phead { padding: 14px 16px 6px; font-size: 12.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.pnote { margin: 12px 16px; font-size: 14.5px; color: var(--text); }
.pnote.warn { background: #fff4d6; color: #5c4400; padding: 10px 12px; border-radius: 10px; }
@media (prefers-color-scheme: dark) { .pnote.warn { background: #3a2f10; color: #ffe39a; } }
.codes { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 12px 16px; font: 17px ui-monospace, monospace; }
.codes div { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 8px; text-align: center; user-select: all; }
.key { margin: 8px 16px; padding: 12px; font: 18px ui-monospace, monospace; letter-spacing: 2px; word-break: break-all; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; user-select: all; }
#pBody > a.link { display: inline-block; margin: 4px 16px 8px; }
.plabel { display: block; margin: 14px 16px 6px; font-size: 14px; color: var(--muted); }
.pin { display: block; width: calc(100% - 32px); margin: 0 16px; padding: 13px; font-size: 17px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.primary.wide { display: block; width: calc(100% - 32px); margin: 16px; }
#pBody .err { margin: 8px 16px 0; }
.pt small.pre { white-space: pre-line; }
.codein { width: 100%; padding: 13px; margin-top: 8px; font-size: 22px; letter-spacing: 6px; text-align: center; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); }