:root{
  --ink:#1b2430; --muted:#6b7684; --paper:#fff; --surface:#f5f6f8; --line:#e3e6eb;
  --accent:#2b5bd7; --accent-soft:#e9effc; --danger:#c43d3d; --radius:8px;
  --font:"Inter","Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{--ink:#e8ebf0;--muted:#98a2b0;--paper:#14181e;--surface:#1b2028;--line:#2a313b;--accent:#6e93f0;--accent-soft:#1f2b44;--danger:#e26b6b}
}
*{box-sizing:border-box;margin:0}
[hidden]{display:none!important}
html,body{height:100%}
body{font:14px/1.5 var(--font);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px;letter-spacing:-.01em}
.logo{width:26px;height:26px;border-radius:7px;background:var(--accent);position:relative}
.logo::after{content:"";position:absolute;left:5px;right:5px;bottom:7px;height:8px;border-radius:5px;background:#fff;box-shadow:3px -4px 0 -1px #fff}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:36px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);font-weight:500;transition:background .15s}
.btn:hover{background:var(--surface)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{filter:brightness(1.08);background:var(--accent)}
.btn.ghost{border-color:transparent;color:var(--muted)}
.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}
.link{color:var(--accent);padding:6px;font-weight:500}

/* Login */
#auth{min-height:100%;display:grid;place-items:center;padding:24px;background:var(--surface)}
.auth-card{width:100%;max-width:380px;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:32px;display:flex;flex-direction:column;gap:14px}
.auth-card h1{font-size:22px;font-weight:600;letter-spacing:-.02em;margin:10px 0 2px}
label{display:flex;flex-direction:column;gap:6px;font-weight:500;font-size:13px}
input{height:38px;padding:0 12px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}
input:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}
.error{color:var(--danger);font-size:13px;min-height:0}
.error:empty{display:none}

/* Layout */
#app{display:grid;grid-template-columns:240px 1fr;height:100vh}
.sidebar{border-right:1px solid var(--line);padding:20px 16px;display:flex;flex-direction:column;gap:10px;background:var(--surface)}
.sidebar .brand{margin:0 6px 14px}
.sidebar .new{width:100%;justify-content:flex-start}.bulk-actions{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:4px 0 8px}.bulk-actions span{font-size:12px;color:var(--muted);margin-right:auto}.bulk-actions .btn{height:30px;padding:0 9px;font-size:12px}
nav{display:flex;flex-direction:column;gap:2px;margin-top:14px}
nav button{display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:var(--radius);color:var(--muted);text-align:left;font-weight:500}
nav button:hover{background:var(--line)}
nav button.active{background:var(--accent-soft);color:var(--accent)}
.usage{margin-top:auto;padding:0 6px;color:var(--muted);font-size:12.5px}
.bar{height:4px;background:var(--line);border-radius:4px;overflow:hidden;margin-bottom:8px}
.bar i{display:block;height:100%;background:var(--accent);width:0}

main{display:flex;flex-direction:column;min-width:0;overflow:hidden}
.topbar{display:flex;align-items:center;gap:14px;padding:14px 24px;border-bottom:1px solid var(--line)}
.search{flex:1;max-width:460px;flex-direction:row;align-items:center;position:relative}
.search svg{position:absolute;left:12px;color:var(--muted);pointer-events:none}
.search input{width:100%;padding-left:38px;background:var(--surface);border-color:transparent}
.seg{display:flex;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-left:auto}
.seg button{width:36px;height:34px;display:grid;place-items:center;color:var(--muted)}
.seg button.active{background:var(--accent-soft);color:var(--accent)}
.user{display:flex;align-items:center;gap:6px;color:var(--muted)}
.crumbs{display:flex;align-items:center;gap:4px;padding:16px 24px 4px;font-size:15px;font-weight:600;flex-wrap:wrap}
.crumbs button{padding:4px 8px;border-radius:6px;color:var(--muted);font-weight:500}
.crumbs button:hover{background:var(--surface);color:var(--ink)}
.crumbs button:last-child{color:var(--ink);font-weight:600}
.crumbs span{color:var(--line)}
#content{flex:1;overflow:auto;padding:12px 24px 40px}.selection-bar{display:flex;align-items:center;gap:14px;padding:6px 24px;color:var(--muted);font-size:13px}.selection-bar label{display:flex;flex-direction:row;align-items:center;gap:8px;font-weight:500}.selection-bar input,.select-box input,#selectAll{width:17px;height:17px;accent-color:var(--accent)}.select-box{position:absolute;z-index:2;top:9px;left:9px;width:24px;height:24px;display:grid;place-items:center;background:var(--paper);border:1px solid var(--line);border-radius:6px;opacity:0;cursor:pointer}.card:hover .select-box,.card.selected .select-box,.row:hover .select-box,.row.selected .select-box{opacity:0}.card.selected,.row.selected{border-color:var(--accent);background:var(--accent-soft)}.row{position:relative}.row .select-box{position:static;width:22px;height:22px;opacity:0}.row.head .select-box{opacity:0}

/* Grade */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(176px,1fr));gap:16px}
.card{position:relative;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--paper);cursor:pointer;user-select:none;transition:border-color .15s}
.card:hover{border-color:var(--accent)}
.card.drop{border-color:var(--accent);background:var(--accent-soft)}
.thumb{aspect-ratio:4/3;background:var(--surface);display:grid;place-items:center;color:var(--muted);overflow:hidden;position:relative}
.thumb img,.thumb video{width:100%;height:100%;object-fit:cover}
.thumb svg{width:38px;height:38px;stroke-width:1.4}
.card.folder .thumb{color:var(--accent);background:var(--accent-soft)}
.badge{position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.62);color:#fff;border-radius:999px;width:26px;height:26px;display:grid;place-items:center}
.badge svg{width:12px;height:12px;stroke:none;fill:#fff;width:12px}
.meta{padding:10px 12px}
.meta b{display:block;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meta small{color:var(--muted);font-size:12px}
.tools{position:absolute;top:8px;right:8px;display:flex;gap:4px;opacity:0;transition:opacity .15s}
.card:hover .tools,.card:focus-within .tools,.row:hover .tools{opacity:1}
.tools button,.tools a{width:30px;height:30px;display:grid;place-items:center;border-radius:7px;background:var(--paper);border:1px solid var(--line);color:var(--ink)}
.tools button:hover,.tools a:hover{background:var(--surface)}
.tools .del:hover{color:var(--danger)}

/* Lista */
.list{display:flex;flex-direction:column}
.row{display:grid;grid-template-columns:28px 32px 1fr 110px 140px 110px;align-items:center;gap:12px;padding:9px 12px;border-bottom:1px solid var(--line);cursor:pointer;border-radius:6px}
.row:hover{background:var(--surface)}
.row.head{color:var(--muted);font-size:12.5px;cursor:default;font-weight:500}
.row.head:hover{background:none}
.row .n{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}
.row .c{color:var(--muted);font-size:13px}
.row .ic{color:var(--muted)} .row.folder .ic{color:var(--accent)}
.row .tools{position:static;justify-content:flex-end}
.row.drop{background:var(--accent-soft)}
.empty{display:grid;place-items:center;text-align:center;color:var(--muted);padding:80px 20px;gap:6px}
.empty svg{width:44px;height:44px;stroke-width:1.2;margin-bottom:8px}
.empty b{color:var(--ink);font-size:16px;font-weight:600}

/* Upload, drop, toasts */
.dropzone{position:fixed;inset:0;background:color-mix(in srgb,var(--accent) 12%,transparent);border:2px dashed var(--accent);display:none;place-items:center;z-index:50;pointer-events:none;font-size:18px;font-weight:600;color:var(--accent);margin:12px;border-radius:14px}
.dropzone.on{display:grid}
.uploads{position:fixed;right:20px;bottom:20px;width:320px;max-height:50vh;overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 28px rgba(0,0,0,.12);z-index:40;padding:6px}
.up{padding:10px 12px}
.up div{display:flex;justify-content:space-between;gap:10px;font-size:13px}
.up span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.up .bar{margin:8px 0 0}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:var(--radius);z-index:80;font-weight:500}

.modal{position:fixed;inset:0;background:rgba(10,14,20,.45);display:grid;place-items:center;z-index:60;padding:20px}
.dialog-box{background:var(--paper);border-radius:12px;padding:24px;width:100%;max-width:400px;display:flex;flex-direction:column;gap:12px}
.dialog-box h2{font-size:17px;font-weight:600}
.dialog-box p{color:var(--muted)} .dialog-box p:empty{display:none}
.actions{display:flex;justify-content:flex-end;gap:8px;margin-top:6px}

/* Visualizador */
.viewer{position:fixed;inset:0;background:#0d1015;z-index:70;color:#fff;display:flex;flex-direction:column}
.viewer-top{display:flex;align-items:center;gap:12px;padding:10px 14px;background:linear-gradient(#0d1015,transparent);position:absolute;inset:0 0 auto;z-index:3}
.viewer-top span{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.icon{width:40px;height:40px;display:grid;place-items:center;border-radius:999px;color:#fff}
.icon:hover{background:rgba(255,255,255,.14)}
.nav{position:absolute;top:50%;transform:translateY(-50%);z-index:3;background:rgba(255,255,255,.1)}
.prev{left:16px}.next{right:16px}
.stage{flex:1;display:grid;place-items:center;min-height:0;position:relative}
.stage>img{max-width:100%;max-height:100%;object-fit:contain;cursor:zoom-in;transition:transform .2s}
.stage>img.zoom{transform:scale(2);cursor:zoom-out}
.stage>iframe{width:min(960px,92vw);height:86vh;border:0;background:#fff;border-radius:8px}
.audio-box{display:grid;gap:20px;place-items:center;width:min(520px,90vw)}
.audio-box svg{width:80px;height:80px;stroke-width:1}
.audio-box audio{width:100%}
.nofile{text-align:center;color:#b8c0cc}
.nofile .btn{margin-top:14px}

/* Player de vídeo */
.player{position:relative;width:100%;height:100%;background:#000;display:grid;place-items:center;overflow:hidden}
.player video{max-width:100%;max-height:100%;width:100%;height:100%;object-fit:contain}
.player.controls-hidden .pbar{opacity:0;pointer-events:none}
.player.controls-hidden .center-controls{opacity:0;pointer-events:none}
.player.idle{cursor:none}
.pbar{position:absolute;left:0;right:0;bottom:0;padding:28px 18px 12px;background:linear-gradient(transparent,rgba(0,0,0,.78));transition:opacity .25s;display:flex;flex-direction:column;gap:6px}
.player.idle .pbar{opacity:0;pointer-events:none}
.seek{position:relative;height:16px;display:flex;align-items:center;cursor:pointer}
.seek .track{position:absolute;left:0;right:0;height:4px;border-radius:4px;background:rgba(255,255,255,.25);transition:height .12s}
.seek:hover .track{height:6px}
.seek .buf,.seek .pos{position:absolute;left:0;height:100%;border-radius:4px}
.seek .buf{background:rgba(255,255,255,.3)}
.seek .pos{background:var(--accent);filter:brightness(1.25)}
.seek .tip{position:absolute;bottom:20px;transform:translateX(-50%);background:#000;padding:2px 7px;border-radius:5px;font-size:12px;display:none}
.seek:hover .tip{display:block}
.ctrls{display:flex;align-items:center;gap:4px}
.ctrls .icon{width:36px;height:36px}.ctrls .jump{font-size:20px;position:relative}.ctrls .jump small{font-size:8px;position:absolute;bottom:4px;right:4px}.ctrls .jump:hover{background:rgba(255,255,255,.14)}
.ctrls .time{font-size:13px;font-variant-numeric:tabular-nums;margin:0 10px;color:#e4e8ee}
.ctrls .sp{flex:1}
.ctrls .speed{font-size:13px;font-weight:600;min-width:46px;height:32px;border-radius:7px;color:#fff}
.ctrls .speed:hover{background:rgba(255,255,255,.14)}
.vol{width:80px;accent-color:#fff;height:4px;padding:0;border:0;background:none}
.center-controls{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:26px;z-index:2;transition:opacity .2s}
.center-controls button{color:#fff;border:0;display:grid;place-items:center;text-shadow:0 2px 8px rgba(0,0,0,.65)}
.center-jump{width:58px;height:58px;border-radius:999px;background:rgba(0,0,0,.42);font-size:34px;line-height:1;position:relative}
.center-jump small{font-size:10px;position:absolute;bottom:11px;right:11px}
.center-jump:hover,.center-play:hover{background:rgba(0,0,0,.62)}
.center-play{width:72px;height:72px;border-radius:999px;background:rgba(0,0,0,.52)}
.center-play svg{width:30px;height:30px;fill:currentColor}
.player.paused .center-controls{opacity:1;pointer-events:auto}
@media (max-width:820px){.center-controls{gap:18px}.center-jump{width:52px;height:52px}.center-play{width:66px;height:66px}}
.resume{position:absolute;top:70px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.7);padding:8px 14px;border-radius:999px;font-size:13px}

@media (max-width:820px){
  #app{grid-template-columns:1fr;grid-template-rows:auto 1fr;height:100dvh}
  .sidebar{flex-direction:row;flex-wrap:wrap;align-items:center;padding:12px;border-right:0;border-bottom:1px solid var(--line)}
  .sidebar .brand{margin:0 auto 0 0}.sidebar .new{width:auto}
  nav{flex-direction:row;overflow:auto;width:100%;margin:0}
  nav button{white-space:nowrap;padding:7px 12px}
  .usage,.user .profile-name,.user .profile-chevron{display:none}.user .avatar{display:grid}
  .topbar,.crumbs,#content{padding-left:14px;padding-right:14px}
  .row{grid-template-columns:28px 28px 1fr auto}.selection-bar{padding-left:14px;padding-right:14px}.select-box{opacity:0}.row .c{display:none}.row.head{display:none}
  .tools{opacity:1}
  .vol{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

.selection-marquee{position:fixed;z-index:90;border:1px dashed var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent);pointer-events:none}

.profile-wrap{position:relative}.profile-trigger{display:flex;align-items:center;gap:8px;padding:4px 6px;border-radius:999px;color:var(--ink)}.profile-trigger:hover{background:var(--surface)}.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--accent);color:#fff;font-size:11px;font-weight:700}.avatar.large{width:38px;height:38px}.profile-chevron{font-size:16px;color:var(--muted);line-height:1}.profile-menu{position:absolute;right:0;top:46px;width:260px;background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 28px rgba(0,0,0,.16);padding:8px;z-index:65}.profile-summary{display:flex;align-items:center;gap:10px;padding:10px 8px 12px;border-bottom:1px solid var(--line);margin-bottom:4px}.profile-summary b,.profile-summary small{display:block;max-width:175px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-summary small{color:var(--muted);font-size:12px}.profile-action{display:block;width:100%;padding:10px 8px;border-radius:7px;text-align:left}.profile-action:hover{background:var(--surface)}.profile-action:last-child{color:var(--danger)}
.stage{touch-action:pan-y}.nav{display:none}
@media (max-width:520px){.profile-menu{right:-6px;width:min(260px,calc(100vw - 28px))}.profile-trigger{padding:3px}.topbar{gap:8px}}

.stage{overflow:hidden}.stage.slide-next>*{animation:viewer-slide-next .3s cubic-bezier(.22,.8,.25,1) both}.stage.slide-prev>*{animation:viewer-slide-prev .3s cubic-bezier(.22,.8,.25,1) both}@keyframes viewer-slide-next{from{opacity:0;transform:translate3d(7%,0,0) scale(.985)}to{opacity:1;transform:translate3d(0,0,0) scale(1)}}@keyframes viewer-slide-prev{from{opacity:0;transform:translate3d(-7%,0,0) scale(.985)}to{opacity:1;transform:translate3d(0,0,0) scale(1)}}