/* NVR web UI. Colours and components follow web/prototype; fonts are the
   system's own, so the page loads nothing from outside the NVR. */
:root{
  --ground:#E6EBE8; --surface:#F7F9F8; --surface-2:#EDF1EF; --surface-3:#E2E8E4;
  --ink:#16201B; --ink-2:#4E5B54; --ink-3:#7B877F;
  --line:#C6D0CA; --line-2:#D9E0DB;
  --accent:#17695A; --accent-hover:#0F5548; --accent-ink:#FFFFFF; --accent-soft:#D2E7E0;
  --cover:#8FC4B5; --cover-sel:#3F9C85; --lock:#8B6F3A;
  --video:#090C0B; --osd:#F1F5F2;
  --ok:#25824F; --warn:#B06D0B; --bad:#C0392B; --rec:#E0352B; --danger:#B42318; --danger-soft:#FBE3E0;
  --shadow:0 1px 2px rgba(18,32,26,.07),0 8px 24px rgba(18,32,26,.08);
  --font-ui:system-ui,-apple-system,"Segoe UI","Microsoft JhengHei","PingFang TC","Noto Sans TC","Noto Sans CJK TC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","Cascadia Mono",Consolas,"Microsoft JhengHei",monospace;
  --radius:10px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --ground:#0F1412; --surface:#161C19; --surface-2:#1C2420; --surface-3:#243029;
    --ink:#E3EAE6; --ink-2:#A6B3AC; --ink-3:#75827B;
    --line:#2B3531; --line-2:#222B27;
    --accent:#4DB49B; --accent-hover:#6BC7B0; --accent-ink:#06231C; --accent-soft:#173A31;
    --cover:#2F6F60; --cover-sel:#4DB49B; --lock:#C9A36A;
    --video:#050706;
    --ok:#4CC082; --warn:#E3A13B; --bad:#FF6A5C; --danger:#FF6A5C; --danger-soft:#3A1916;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --ground:#0F1412; --surface:#161C19; --surface-2:#1C2420; --surface-3:#243029;
  --ink:#E3EAE6; --ink-2:#A6B3AC; --ink-3:#75827B;
  --line:#2B3531; --line-2:#222B27;
  --accent:#4DB49B; --accent-hover:#6BC7B0; --accent-ink:#06231C; --accent-soft:#173A31;
  --cover:#2F6F60; --cover-sel:#4DB49B; --lock:#C9A36A;
  --video:#050706;
  --ok:#4CC082; --warn:#E3A13B; --bad:#FF6A5C; --danger:#FF6A5C; --danger-soft:#3A1916;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
}

html,body{height:100%}
body{margin:0;background:var(--ground);color:var(--ink);font:14px/1.55 var(--font-ui);padding:16px;box-sizing:border-box}
*,*::before,*::after{box-sizing:border-box}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
h1,h2,h3{margin:0;text-wrap:balance}
p{margin:0}
.sprite{display:none}
[hidden]{display:none!important}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.boot{color:var(--ink-3);text-align:center;margin-top:20vh}

/* ---------- shell ---------- */
.app{display:grid;grid-template-columns:84px minmax(0,1fr);gap:16px;min-height:100%;max-width:1520px;margin-inline:auto}
.rail{position:sticky;top:16px;align-self:start;display:flex;flex-direction:column;gap:2px;padding:10px 8px;background:var(--surface);border:1px solid var(--line-2);border-radius:14px;max-height:calc(100vh - 32px);overflow:auto}
.rail-mark{display:flex;flex-direction:column;align-items:center;gap:2px;font:600 12px/1 var(--font-ui);letter-spacing:.3em;text-indent:.3em;color:var(--ink-2);text-decoration:none;padding:4px 0 10px;border-bottom:1px solid var(--line-2);margin-bottom:6px}
.rail-mark img{display:block;width:60px;height:auto;margin-bottom:4px}
.brand-logo img{display:block;height:56px;width:auto}
.rail-sep{height:1px;background:var(--line-2);margin:6px 4px}
.nav-btn{display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 4px;border:0;background:transparent;border-radius:10px;color:var(--ink-2);font-size:12px;text-decoration:none}
.nav-btn svg{width:21px;height:21px}
.nav-btn:hover{background:var(--surface-2);color:var(--ink)}
.nav-btn[aria-current="page"]{background:var(--accent-soft);color:var(--accent)}
.main{display:flex;flex-direction:column;gap:16px;min-width:0}
.topbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.topbar h1{font-size:20px;font-weight:600}
.spacer{flex:1}
.user-chip{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-2);border:0;background:none;padding:2px 4px;border-radius:8px}
.user-chip:hover{background:var(--surface-2)}
.av{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font:600 12px var(--font-ui);color:#fff;background:var(--accent);flex:none}
.tabbar{display:none}
@media (max-width:899px){
  .app{grid-template-columns:minmax(0,1fr)}
  .rail{display:none}
  body{padding-bottom:calc(80px + env(safe-area-inset-bottom,0px))}
  .tabbar{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface);border-top:1px solid var(--line);padding:6px 8px calc(6px + env(safe-area-inset-bottom,0px))}
  .tabbar .nav-btn{padding:5px 2px}
}
.sheet-back{position:fixed;inset:0;background:rgba(10,14,12,.4);z-index:40}
.sheet{position:fixed;left:8px;right:8px;bottom:calc(76px + env(safe-area-inset-bottom,0px));z-index:41;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px;display:grid;grid-template-columns:repeat(3,1fr);gap:6px;box-shadow:var(--shadow)}

/* ---------- common ---------- */
.panel{background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius);padding:16px;min-width:0}
.panel h2{font-size:15px;font-weight:600}
.panel-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.hint{color:var(--ink-3);font-size:12px}
.note{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border-radius:8px;background:var(--surface-2);color:var(--ink-2);font-size:13px}
.note b{color:var(--ink)}
.note.error{background:var(--danger-soft);color:var(--danger)}
.note[hidden]{display:none}
.stack{display:flex;flex-direction:column;gap:16px;min-width:0}
.stack-s{display:flex;flex-direction:column;gap:10px;min-width:0}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.label{font-size:12px;color:var(--ink-3)}
.empty{padding:24px 8px;text-align:center;color:var(--ink-3);font-size:13px}
.tag{font-size:11px;padding:0 6px;border-radius:4px;border:1px solid var(--line);color:var(--ink-2);white-space:nowrap}
.tag.accent{border-color:var(--accent);color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:var(--surface);font-size:13px;font-weight:500;white-space:nowrap;text-decoration:none;color:inherit}
.btn:hover:not(:disabled){border-color:var(--ink-3)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover:not(:disabled){background:var(--accent-hover)}
.btn.link{border:0;background:none;padding:4px 2px;color:var(--accent)}
.btn:disabled{opacity:.45}
.btn svg{width:16px;height:16px;flex:none}
.btn.sm{padding:5px 10px;font-size:12px}
.btn.danger{color:var(--danger);border-color:var(--danger)}
.btn.danger:hover:not(:disabled){background:var(--danger-soft)}
.btn.danger-solid{background:var(--danger);border-color:var(--danger);color:#fff}
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-size:12px;color:var(--ink-2)}
.input{padding:9px 11px;border-radius:8px;border:1px solid var(--line);background:var(--ground);font-size:15px;min-width:0;width:100%}
.input:focus{outline:2px solid var(--accent);outline-offset:0;border-color:transparent}
.pw{position:relative}
.pw .input{padding-right:46px}
.pw-eye{position:absolute;top:50%;right:4px;transform:translateY(-50%);width:38px;height:38px;border:0;border-radius:6px;background:none;color:var(--ink-3);display:grid;place-items:center}
.pw-eye:hover{color:var(--ink);background:var(--surface-2)}
.pw-eye[aria-pressed="true"]{color:var(--accent)}
.pw-eye svg{width:20px;height:20px}
.pw .input::-ms-reveal{display:none}
.input:disabled{opacity:.7;cursor:not-allowed;background:var(--surface-2)}
.input.code{font:500 22px/1.2 var(--font-mono);letter-spacing:.3em;text-align:center}
dl.facts{display:grid;grid-template-columns:max-content 1fr;gap:6px 16px;margin:0}
dl.facts dt{color:var(--ink-3);font-size:13px}
dl.facts dd{margin:0}
.perm-groups{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.perm-groups h3{font-size:12px;color:var(--ink-3);font-weight:500;margin-bottom:4px}
.perm-groups ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:3px}
.perm-groups li{display:flex;gap:6px;align-items:center;font-size:13px}
.perm-groups li.off{color:var(--ink-3);text-decoration:line-through}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--ink);color:var(--surface);padding:9px 16px;border-radius:999px;font-size:13px;transition:opacity .2s,transform .2s;z-index:60;max-width:calc(100vw - 32px)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast{display:flex;align-items:center;gap:8px}
.toast-icon{flex:none;display:grid;place-items:center;width:18px;height:18px;border-radius:50%;font-size:12px;font-weight:700;line-height:1}
.toast.ok .toast-icon{background:var(--ok);color:#fff}
.toast.error{background:var(--danger);color:#fff}
.toast.error .toast-icon{background:#fff;color:var(--danger)}
@media (max-width:899px){.toast{bottom:calc(88px + env(safe-area-inset-bottom,0px))}}

/* ---------- sign-in and setup ---------- */
.auth{min-height:100%;display:grid;place-items:center;padding:24px 0}
.auth-card{width:100%;max-width:400px;display:flex;flex-direction:column;gap:16px;background:var(--surface);border:1px solid var(--line-2);border-radius:14px;padding:24px;box-shadow:var(--shadow)}
.auth-card h1{font-size:20px;font-weight:600}

.auth-card form{display:flex;flex-direction:column;gap:14px}
.qr{align-self:center;width:200px;height:200px;background:#fff;border-radius:8px;padding:6px}
.qr svg{width:100%;height:100%;display:block}
.secret{font:500 15px/1.6 var(--font-mono);letter-spacing:.08em;word-break:break-all;text-align:center;user-select:all;padding:8px;border-radius:8px;background:var(--surface-2)}
.or{display:flex;align-items:center;gap:10px;color:var(--ink-3);font-size:12px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line-2)}
.qr.faded{opacity:.25;filter:blur(2px)}
.qr-state{text-align:center;font-size:13px;color:var(--ink-2);min-height:1.5em}
.qr-state.ok{color:var(--ok);font-weight:600}
.qr-state.error{color:var(--danger)}
.steps{margin:0;padding-left:1.3em;display:flex;flex-direction:column;gap:6px;color:var(--ink-2);font-size:13px}
/* A section that slides open: rows animate from 0fr to 1fr. */
.reveal{display:grid;grid-template-rows:0fr;opacity:0;transition:grid-template-rows .3s ease,opacity .25s ease}
.reveal>*{overflow:hidden;min-height:0;margin:-3px;padding:3px}
.reveal.open{grid-template-rows:1fr;opacity:1}
@media (prefers-reduced-motion:reduce){.reveal{transition:none}}

/* ---------- playback (step 4b; from web/prototype) ---------- */
.icon-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:8px;border:1px solid var(--line);background:var(--surface);font-size:13px}
.icon-btn:hover:not(:disabled){border-color:var(--ink-3)}
.icon-btn:disabled{opacity:.4}
.icon-btn svg{width:16px;height:16px;flex:none}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{padding:5px 11px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--ink-2);white-space:nowrap}
.chip:hover:not(:disabled){border-color:var(--ink-3);color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--surface)}
.chip:disabled{opacity:.4}
.chip .ch{margin-right:4px;font-weight:600;letter-spacing:.06em}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.seg button{border:0;border-right:1px solid var(--line);background:none;padding:6px 12px;font-size:13px;color:var(--ink-2)}
.seg button:last-child{border-right:0}
.seg button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
.video{position:relative;aspect-ratio:16/9;max-width:100%;background:var(--video);border-radius:var(--radius);overflow:hidden;isolation:isolate}
.video video{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:contain;background:var(--video)}
.osd{position:absolute;z-index:2;color:var(--osd);font:500 clamp(10px,1.2vw,13px)/1.2 var(--font-mono);text-shadow:0 1px 2px rgba(0,0,0,.85);pointer-events:none;white-space:nowrap}
.osd.tl{top:8px;left:10px;font-family:var(--font-ui)} .osd.tr{top:8px;right:10px}
/* NVR疊字 (overlay.js): parts placed by fractions of the picture; font sizes
   in the cameras' OSD units scale with the picture (1920 wide = 1:1). */
.nvr-osd{position:absolute;inset:0;z-index:2;pointer-events:none;container-type:inline-size;color:var(--osd);font:500 clamp(10px,1.2vw,13px)/1.2 var(--font-mono)}
.nvr-osd-part{position:absolute;white-space:nowrap;padding:1px 5px;border-radius:3px}
.nvr-osd-part[data-part="name"],.nvr-osd-part[data-part="weekday"],.nvr-osd-part[data-part^="text"]{font-family:var(--font-ui)}
.nvr-osd-part.ch{font-weight:600;letter-spacing:.1em;border:1px solid rgba(241,245,242,.55)}
.nvr-osd.fx-transparent .nvr-osd-part{text-shadow:0 1px 2px rgba(0,0,0,.85)}
.nvr-osd.fx-opaque .nvr-osd-part{background:rgba(9,12,11,.6)}
.nvr-osd.fx-blink .nvr-osd-part{animation:osdblink 1s steps(2,start) infinite}
@keyframes osdblink{to{visibility:hidden}}
.nvr-osd.editing{pointer-events:auto}
.nvr-osd.editing .nvr-osd-part{cursor:move;outline:1px dashed rgba(255,255,255,.75);animation:none;touch-action:none}
@media (prefers-reduced-motion:reduce){.nvr-osd.fx-blink .nvr-osd-part{animation:none}}
.osd.badge{top:31px;right:10px;font-size:11px;padding:2px 6px;border-radius:3px;background:rgba(9,12,11,.6)}
.osd .ch{font-weight:600;letter-spacing:.1em;padding:1px 5px;border:1px solid rgba(241,245,242,.55);border-radius:3px;margin-right:6px}
.nosignal{position:absolute;inset:0;z-index:3;display:grid;place-content:center;gap:4px;text-align:center;color:#C9D1CC;background:repeating-linear-gradient(135deg,#0c100e 0 12px,#101512 12px 24px);font-size:14px;padding:8px}
.nosignal[hidden]{display:none}
.nosignal small{color:#8A958F;font-size:12px}
.pb-top{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.datebtn{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:8px;border:1px solid var(--line);background:var(--surface);font-weight:500;min-width:10em;justify-content:center}
.datebtn svg{width:16px;height:16px}
.pb{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:16px;align-items:start}
@media (max-width:1199px){.pb{grid-template-columns:minmax(0,1fr)}}
.players{display:grid;gap:8px}
.transport{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.playbtn{width:44px;height:44px;border-radius:50%;border:0;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;flex:none}
.playbtn:hover{background:var(--accent-hover)}
.playbtn svg{width:20px;height:20px}
.nowtime{font:500 26px/1 var(--font-mono);font-variant-numeric:tabular-nums}
.tl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:0 10px;margin-top:4px;position:relative}
.tl-labels .axis-sp{height:22px}
.tl-labels .lab{height:30px;display:flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-2);white-space:nowrap}
.tl-labels .lab.sel{color:var(--ink);font-weight:600}
.tl-scroll{overflow-x:auto;overflow-y:hidden;scrollbar-width:thin}
.tl-inner{position:relative;min-width:100%;touch-action:pan-y;user-select:none;cursor:crosshair}
.axis{position:relative;height:22px;border-bottom:1px solid var(--line)}
.axis span{position:absolute;bottom:4px;transform:translateX(-50%);font:11px var(--font-mono);color:var(--ink-3);white-space:nowrap}
.axis i{position:absolute;bottom:0;width:1px;height:5px;background:var(--line)}
.lane{position:relative;height:30px;border-bottom:1px solid var(--line-2)}
.lane.sel{background:var(--surface-2)}
.cov{position:absolute;top:11px;height:9px;border-radius:2px;background:var(--cover)}
.lane.sel .cov{background:var(--cover-sel)}
.cov.live{opacity:.5}
.gap{position:absolute;top:7px;height:17px;min-width:2px;background:var(--bad);border-radius:1px}
.gap.unreadable{background:var(--warn)}
.lockbar{position:absolute;top:2px;height:5px;border-radius:2px;background:var(--lock);min-width:3px;z-index:1}
.sel-range{position:absolute;top:22px;bottom:0;background:var(--accent-soft);opacity:.85;pointer-events:none}
.ph{position:absolute;top:0;bottom:0;width:2px;margin-left:-1px;background:var(--accent);pointer-events:none;z-index:3}
.ph::before{content:"";position:absolute;top:14px;left:-5px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--surface)}
.hover-line{position:absolute;top:22px;bottom:0;width:1px;background:var(--ink-3);pointer-events:none;z-index:2}
.hover-line[hidden]{display:none}
.future{position:absolute;top:22px;bottom:0;background:repeating-linear-gradient(135deg,transparent 0 5px,var(--line-2) 5px 6px);pointer-events:none}
.tl-thumb{position:fixed;z-index:30;pointer-events:none;width:220px;border-radius:8px;overflow:hidden;background:var(--video);box-shadow:var(--shadow);border:1px solid var(--line)}
.tl-thumb[hidden]{display:none}
.tl-thumb .img{aspect-ratio:16/9;display:grid;place-items:center;color:#8A958F;font-size:12px}
.tl-thumb img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}
.tl-thumb .cap{font:500 11px var(--font-mono);color:var(--osd);background:rgba(9,12,11,.85);padding:4px 7px;display:flex;justify-content:space-between;gap:8px}
.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--ink-2);margin-top:10px}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{display:inline-block;width:14px;height:8px;border-radius:2px}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:12px;padding-top:12px;border-top:1px solid var(--line-2)}
.actions .range-label{font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.popover{position:fixed;z-index:35;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:12px;width:292px;max-width:calc(100vw - 32px)}
.click-away{position:fixed;inset:0;z-index:34}
.cal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.cal-head b{font-size:14px}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;text-align:center}
.cal .wd{font-size:11px;color:var(--ink-3);padding:4px 0}
.cal button{position:relative;aspect-ratio:1;border:0;border-radius:8px;background:none;font:500 13px var(--font-mono);color:var(--ink)}
.cal button:hover:not(:disabled){background:var(--surface-2)}
.cal button:disabled{color:var(--ink-3);opacity:.45}
.cal button.today{box-shadow:inset 0 0 0 1.5px var(--accent)}
.cal button[aria-selected="true"]{background:var(--accent);color:var(--accent-ink)}
.cal button.rec{background:var(--surface-2);font-weight:600}
.cal button.rec:hover{background:var(--surface-3)}
.cal button .covbar{position:absolute;left:18%;right:18%;bottom:5px;height:3px;border-radius:2px;background:var(--line);overflow:hidden}
.cal button .covbar i{display:block;height:100%;background:var(--cover-sel)}
.cal button[aria-selected="true"],.cal button[aria-selected="true"]:hover{background:var(--accent);color:var(--accent-ink)}
.cal button[aria-selected="true"] .covbar{background:rgba(255,255,255,.3)}
.cal button[aria-selected="true"] .covbar i{background:var(--accent-ink)}
.cal button .gapdot{position:absolute;top:4px;right:4px;width:6px;height:6px;border-radius:50%;background:var(--bad);box-shadow:0 0 0 1.5px var(--surface)}
.cal-key{display:inline-block;width:14px;height:3px;border-radius:2px;background:var(--cover-sel);vertical-align:middle;margin-right:4px}
.cal-key.dot{width:6px;height:6px;border-radius:50%;background:var(--bad)}
.cal-foot{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-size:11px;color:var(--ink-3);gap:8px}
.progress{height:6px;border-radius:3px;background:var(--surface-3);overflow:hidden}
.progress i{display:block;height:100%;background:var(--accent);transition:width .3s}

/* ---------- accounts, system, cameras (step 4c; from web/prototype) ---------- */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);overflow-x:auto}
.tabs button{border:0;background:none;padding:8px 14px;font-size:14px;color:var(--ink-2);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tabs button[aria-selected="true"]{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}
.switch{position:relative;width:38px;height:22px;border-radius:11px;border:0;background:var(--line);flex:none;transition:background .15s}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.25);transition:transform .15s}
.switch[aria-checked="true"]{background:var(--accent)}
.switch[aria-checked="true"]::after{transform:translateX(16px)}
.switch:disabled{opacity:.5}
.set-row{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid var(--line-2)}
.set-row:last-child{border-bottom:0}
.set-row .txt{flex:1;min-width:0}
.set-row .txt small{display:block;color:var(--ink-3);font-size:12px}
fieldset.plain{border:0;margin:0;padding:0;min-width:0}
.perm-group{margin-top:18px}
.perm-group h3{font-size:13px;font-weight:600;margin-bottom:4px}
.perm-sub h4{margin:10px 0 0;font-size:12px;color:var(--ink-3);font-weight:500}
.acct-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:16px;align-items:start}
@media (max-width:999px){.acct-layout{grid-template-columns:minmax(0,1fr)}}
.acct{display:grid;grid-template-columns:auto minmax(0,1fr);gap:2px 10px;padding:10px 12px;border-radius:10px;border:1px solid transparent;background:none;text-align:left;width:100%}
.acct:hover{background:var(--surface-2)}
.acct[aria-current="true"]{background:var(--accent-soft);border-color:var(--accent)}
.acct .av{grid-row:span 2;align-self:center}
.acct .nm{font-weight:600;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.acct small{color:var(--ink-3);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.av.lg{width:40px;height:40px;font-size:16px}
.cam-checks{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:6px}
.cam-check{display:flex;gap:8px;align-items:center;font-size:13px;padding:6px 8px;border:1px solid var(--line-2);border-radius:8px}
.cam-check input{accent-color:var(--accent);width:16px;height:16px}
.savebar{display:flex;gap:8px;align-items:center;justify-content:flex-end;flex-wrap:wrap;padding-top:14px;margin-top:14px;border-top:1px solid var(--line-2)}
.modal-back{position:fixed;inset:0;z-index:45;background:rgba(10,14,12,.55);display:grid;place-items:center;padding:16px}
.modal-back.ask{z-index:46}
.modal-back.ask .modal{width:min(440px,100%)}
.modal.wide{width:min(1100px,100%)}
.cam-edit{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:18px;align-items:start}
.cam-edit .preview{position:sticky;top:0}
@media (max-width:820px){.cam-edit{grid-template-columns:1fr}.cam-edit .preview{position:static}}
.set-list{display:grid;grid-template-columns:auto 1fr;gap:10px 14px;align-items:center}
.set-list .label{font-size:13px;color:var(--ink-2)}
.set-range{display:flex;gap:10px;align-items:center}
.set-range input[type=range]{flex:1;min-width:0}
.set-range input[type=number]{flex:0 0 84px;width:84px}
.modal .tabs{flex-shrink:0;overflow-y:hidden}
.modal .tabs button:focus-visible{outline-offset:-3px}
.modal{width:min(560px,100%);max-height:calc(100vh - 32px);overflow:auto;background:var(--surface);border-radius:14px;border:1px solid var(--line);box-shadow:var(--shadow);padding:18px;display:flex;flex-direction:column;gap:14px}
.modal-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.modal-head h2{font-size:16px}
.codebox{font-size:26px;font-weight:600;letter-spacing:.14em;text-align:center;padding:14px;border-radius:10px;background:var(--surface-2);user-select:all;word-break:break-all}
.bullets{margin:0;padding-left:1.2em;display:flex;flex-direction:column;gap:4px;color:var(--ink-2);font-size:13px}
.table-wrap{overflow-x:auto;margin-inline:-4px}
table{width:100%;border-collapse:collapse;font-size:13px}
th{font-weight:500;font-size:12px;color:var(--ink-3);text-align:left;padding:6px 8px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:8px;border-bottom:1px solid var(--line-2);font-variant-numeric:tabular-nums;white-space:nowrap;vertical-align:top}
td.wrap{white-space:normal;min-width:16em}
td.num,th.num{text-align:right}
.pill{display:inline-flex;align-items:center;gap:6px;padding:1px 9px;border-radius:999px;font-size:12px;font-weight:500;background:var(--surface-2);white-space:nowrap}
.pill.ok{color:var(--ok)} .pill.bad{color:var(--bad)} .pill.warn{color:var(--warn)} .pill.off{color:var(--ink-3)}
.dot{width:7px;height:7px;border-radius:50%;background:currentColor;display:inline-block;flex:none}
.filters{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.filters .grp{display:flex;align-items:center;gap:8px}
.input.sm{padding:5px 8px;font-size:13px;width:auto}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:999px){.grid-2{grid-template-columns:minmax(0,1fr)}}
.bignum{font:500 22px/1.15 var(--font-mono);font-variant-numeric:tabular-nums}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:14px;margin-top:14px}
.disk{position:relative;height:18px;border-radius:5px;background:var(--surface-2);overflow:hidden;margin-block:10px 6px}
.disk .res{position:absolute;left:0;top:0;bottom:0;background:var(--ink-3);opacity:.5}
.disk .used{position:absolute;top:0;bottom:0;background:var(--accent)}
.disk .mark{position:absolute;top:-2px;bottom:-2px;width:2px;background:var(--bad)}
.disk-legend{display:flex;justify-content:space-between;font-size:12px;color:var(--ink-3);flex-wrap:wrap;gap:8px}
.spec{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:13px;margin:0}
.spec dt{color:var(--ink-3)} .spec dd{margin:0;font-variant-numeric:tabular-nums}
details.panel>summary{cursor:pointer;font-weight:600}
details.fold{border:1px solid var(--line);border-radius:10px;padding:10px 12px}
details.fold>summary{cursor:pointer;list-style-position:outside;margin-left:14px}
.cam-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.preview-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 14px;border-radius:10px;background:var(--accent-soft);border:1px solid var(--accent);font-size:13px}
.preview-bar svg{width:18px;height:18px;color:var(--accent);flex:none}
@media (prefers-reduced-motion:reduce){.switch,.switch::after,.toast{transition:none}}

/* ---------- library (step 3e) ---------- */
.lock-list{display:flex;flex-direction:column}
.lock-item{display:grid;grid-template-columns:176px minmax(0,1fr);gap:14px;padding:12px 0;border-top:1px solid var(--line-2)}
.lock-item:first-child{border-top:0;padding-top:0}
@media (max-width:599px){.lock-item{grid-template-columns:minmax(0,1fr)}}
.lock-thumb{position:relative;display:block;aspect-ratio:16/9;border-radius:8px;overflow:hidden;background:var(--video)}
.lock-thumb img{display:block;width:100%;height:100%;object-fit:cover}
.lock-thumb svg{position:absolute;left:50%;top:50%;width:28px;height:28px;margin:-14px 0 0 -14px;color:#fff;filter:drop-shadow(0 1px 2px rgba(0,0,0,.6));opacity:.85}
.note-row .input{flex:1;min-width:10em}

/* ---------- share viewer (/s/<id>) ---------- */
.share-wrap{max-width:760px;margin:24px auto;display:flex;flex-direction:column;gap:16px}
.share-wrap h1{font-size:18px;font-weight:600;display:flex;align-items:center;gap:8px}
.share-wrap h1 svg{width:20px;height:20px}
.share-video video{background:var(--video)}
.share-foot{text-align:center}

/* ---------- live (step 3d) ---------- */
.wall{display:grid;gap:10px}
@media (max-width:699px){.wall{grid-template-columns:minmax(0,1fr)!important}}
.live-tile{cursor:pointer}
.live-tile.big{cursor:default}
.osd.bl{bottom:8px;left:10px;display:flex;align-items:center;gap:6px;font-family:var(--font-ui);font-size:12px;padding:2px 7px;border-radius:4px;background:rgba(9,12,11,.55)}
.osd.bl[hidden]{display:none}
.osd .recdot{width:7px;height:7px;border-radius:50%;background:var(--rec);animation:blink 1.6s ease-in-out infinite}
.live-badge.late .recdot{background:var(--warn);animation:none}
@keyframes blink{50%{opacity:.25}}
@media (prefers-reduced-motion:reduce){.osd .recdot{animation:none}}
.focus{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:16px;align-items:start}
@media (max-width:1099px){.focus{grid-template-columns:minmax(0,1fr)}}
.ptz{display:grid;grid-template-columns:repeat(3,48px);gap:6px;justify-content:center;margin-block:6px;touch-action:none;user-select:none}
.ptz button{height:48px;border-radius:8px;border:1px solid var(--line);background:var(--surface-2);display:grid;place-items:center}
.ptz button:hover{border-color:var(--accent);color:var(--accent)}
.ptz button:active{background:var(--accent-soft)}
.ptz svg{width:18px;height:18px}

/* Events (step 5a): the 事件 page, marks on the playback timeline, and the
   camera editor's 偵測 tab (the area painted over the preview). */
.evmark{position:absolute;bottom:2px;height:5px;border-radius:2px;background:var(--warn);min-width:3px;z-index:1}
.ev-day{display:flex;align-items:center;gap:6px}
.ev-date{position:relative;display:inline-flex;align-items:center;font-weight:600;padding:4px 6px;border-radius:6px;cursor:pointer}
.ev-date:hover{background:var(--surface-2)}
.ev-date input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}
.ev-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.ev-card{display:flex;flex-direction:column;gap:6px;padding:0 0 10px;border:1px solid var(--line-2);border-radius:var(--radius);background:var(--surface);text-align:left;overflow:hidden;color:var(--ink);font:inherit;cursor:pointer;min-width:0}
.ev-card:hover{border-color:var(--ink-3)}
.ev-card:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.ev-pic{position:relative;display:block;aspect-ratio:16/9;background:var(--video)}
.ev-pic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.ev-box{position:absolute;border:2px solid var(--warn);border-radius:2px;box-shadow:0 0 0 1px rgba(0,0,0,.45)}
.ev-nopic{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:6px;color:#8a958f;font-size:12px}
.ev-nopic svg{width:16px;height:16px}
.ev-live{position:absolute;left:8px;top:8px;display:inline-flex;align-items:center;gap:5px;padding:1px 8px;border-radius:999px;background:rgba(9,12,11,.72);color:#fff;font-size:11px}
.ev-live .dot{background:var(--rec);animation:osdblink 1s steps(2,start) infinite}
.ev-meta{display:flex;align-items:baseline;gap:6px;padding:0 10px;min-width:0}
.ev-meta .ch{font-weight:600;letter-spacing:.06em}
.ev-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-2);min-width:0}
.ev-meta time{font-family:var(--font-mono);font-size:13px;flex:none}
.ev-sub{display:flex;align-items:center;gap:8px;padding:0 10px;font-size:12px;color:var(--ink-3)}
.ev-more{justify-content:center;margin-top:12px}
.ev-big{display:block;width:100%;border-radius:var(--radius)}
.det-grid{position:absolute;inset:0;width:100%;height:100%;z-index:3;cursor:crosshair;touch-action:none}
.det-live{display:flex;flex-direction:column;gap:8px;padding:10px 12px;border:1px solid var(--line-2);border-radius:8px;background:var(--surface-2)}
.det-meter{position:relative;height:8px;border-radius:4px;background:var(--surface-3);overflow:hidden}
.det-meter i{position:absolute;left:0;top:0;bottom:0;background:var(--cover-sel);border-radius:4px;transition:width .3s}
.det-meter i.hit{background:var(--rec)}
.det-meter b{position:absolute;top:0;bottom:0;width:2px;margin-left:-1px;background:var(--ink-2)}
.sched{display:grid;grid-template-columns:22px repeat(48,minmax(0,1fr));gap:1px;user-select:none;touch-action:none;font-size:10px;color:var(--ink-3)}
.sched-h{grid-column:span 6;padding-bottom:2px;font-family:var(--font-mono)}
.sched-d{display:flex;align-items:center;font-size:11px;color:var(--ink-2)}
.sched i{height:16px;background:var(--surface-3);cursor:pointer}
.sched i.b{box-shadow:inset 1px 0 0 var(--line)}
.sched i.on{background:var(--cover-sel)}
.sched i.now{outline:2px solid var(--warn);outline-offset:-1px}

/* 通知 (step 5b): the unread count, home or away, the inbox, rules. */
.nav-btn{position:relative}
.nav-badge{position:absolute;top:3px;left:calc(50% + 4px);min-width:17px;height:17px;padding:0 5px;border-radius:9px;background:var(--rec);color:#fff;font:600 10px/17px var(--font-ui);text-align:center;box-shadow:0 0 0 2px var(--surface)}
.homebig{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.homebig button{display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 10px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink-2);font:inherit;cursor:pointer}
.homebig button svg{width:26px;height:26px}
.homebig button b{font-size:16px;color:var(--ink)}
.homebig button small{font-size:12px;color:var(--ink-3)}
.homebig button[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.homebig button[aria-pressed="true"] b{color:var(--accent)}
.inbox{display:flex;flex-direction:column}
.inbox-item{display:flex;gap:12px;align-items:center;padding:10px 4px;border-bottom:1px solid var(--line-2)}
.inbox-item:last-child{border-bottom:0}
.inbox-item.unread{background:var(--surface-2);border-radius:8px}
.inbox-item .sev{width:8px;height:8px;border-radius:50%;flex:none;background:var(--warn);margin-left:6px}
.inbox-item .sev.bad{background:var(--bad)}
.inbox-item .sev.ok{background:var(--ok)}
.inbox-pic{width:112px;aspect-ratio:16/9;object-fit:cover;border-radius:6px;background:var(--video);flex:none}
.inbox-text{flex:1;min-width:0}
.inbox-text b{display:block;font-size:14px}
.inbox-text p{margin:2px 0 0;font-size:12px;color:var(--ink-3);overflow-wrap:anywhere}
.inbox-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex:none;font-size:12px;color:var(--ink-3);text-align:right;max-width:40%}
.rule{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line-2)}
.rule.off .rule-text{opacity:.55}
.rule-text{flex:1;min-width:0}
.rule-text b{display:block;font-size:14px}
.rule-text small{display:block;font-size:12px;color:var(--ink-3)}
.label2{font-size:12px;font-weight:600;color:var(--ink-2)}
.day-picks{display:flex;gap:6px;flex-wrap:wrap}
.day-picks label{position:relative}
.day-picks input{position:absolute;opacity:0;inset:0;cursor:pointer}
.day-picks span{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.day-picks input:checked+span{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.day-picks input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
@media (max-width:640px){.inbox-pic{width:80px}.inbox-side{max-width:34%}}

/* What was recognised (step 5c). */
.tag.lb-person{border-color:var(--rec);color:var(--rec)}
.tag.lb-car{border-color:var(--accent);color:var(--accent)}
.tag.lb-bike{border-color:var(--warn);color:var(--warn)}
.tag.lb-animal{border-color:var(--ok);color:var(--ok)}
.evmark.person{background:var(--rec)}
.evmark.car{background:var(--accent)}
.evmark.bike{background:#8a6fd1}
.evmark.animal{background:var(--ok)}