*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--canvas);color:var(--text);font-size:14px;line-height:1.45}
button,input,textarea,select{font:inherit}
button{color:inherit}
button,[role=button]{-webkit-tap-highlight-color:transparent}
button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid rgb(88 101 232/.22);outline-offset:2px}
svg{display:block}
[hidden]{display:none!important}
.app{min-height:100%;display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr)}
.sidebar{position:sticky;top:0;height:100vh;padding:var(--s4);border-right:1px solid var(--line);background:rgba(250,250,251,.92);backdrop-filter:blur(18px);display:flex;flex-direction:column;gap:var(--s5)}
.brand{height:40px;display:flex;align-items:center;gap:10px;padding:0 8px;font-weight:720;letter-spacing:-.02em}
.brand-mark{width:30px;height:30px;border-radius:10px;background:var(--text);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-sm);flex:none}
.nav,.folder-nav{display:grid;gap:var(--s1)}
.nav-label{padding:0 10px;margin-bottom:6px;color:#8b9099;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.nav-item{width:100%;min-height:38px;padding:0 10px;border:0;border-radius:var(--r-sm);background:transparent;display:flex;align-items:center;gap:10px;text-align:left;cursor:pointer;color:#4f5560}
.nav-item:hover{background:var(--surface-strong);color:var(--text)}
.nav-item.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm);font-weight:650}
.nav-item .count{margin-left:auto;color:#9297a0;font-size:12px}
.sidebar-bottom{margin-top:auto;padding-top:var(--s4);border-top:1px solid var(--line)}
.user{display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--r-md)}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(145deg,#d5d9ff,#aeb7ff);display:grid;place-items:center;font-weight:700;color:#323fbd;flex:none}
.user-copy{min-width:0;flex:1}
.user-name{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-state{font-size:12px;color:var(--text-soft);display:flex;align-items:center;gap:5px}
.user-state:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--success)}
.main{min-width:0;padding:var(--s5) clamp(18px,3vw,42px) 48px}
.topbar{display:flex;align-items:center;gap:var(--s3);min-height:44px;margin-bottom:var(--s6)}
.mobile-menu{display:none}
.search{position:relative;max-width:520px;flex:1}
.search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:#8d929b;pointer-events:none}
.search input{width:100%;height:42px;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:0 42px;color:var(--text);box-shadow:var(--shadow-sm)}
.search input::placeholder{color:#9ca1aa}
.search kbd{position:absolute;right:10px;top:9px;height:24px;min-width:28px;padding:0 7px;border:1px solid var(--line);border-bottom-color:var(--line-strong);border-radius:6px;background:var(--surface-soft);display:grid;place-items:center;color:#898e97;font-size:11px}
.button{height:42px;border:1px solid var(--line);border-radius:11px;background:var(--surface);padding:0 15px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:650;cursor:pointer;box-shadow:var(--shadow-sm);white-space:nowrap}
.button:hover{border-color:var(--line-strong);background:var(--surface-soft)}
.button.primary{border-color:var(--accent);background:var(--accent);color:#fff;box-shadow:0 4px 12px rgb(88 101 232/.2)}
.button.primary:hover{background:var(--accent-hover)}
.button.danger-fill{border-color:var(--danger);background:var(--danger);color:#fff}
.button.full{width:100%}
.button:disabled{opacity:.55;cursor:not-allowed}
.icon-button{width:38px;height:38px;padding:0;border:1px solid transparent;border-radius:10px;background:transparent;display:grid;place-items:center;cursor:pointer;color:#656b76;flex:none}
.icon-button:hover{background:var(--surface-strong);color:var(--text)}
.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--s5);margin-bottom:var(--s5)}
.eyebrow{color:var(--text-soft);font-size:13px;margin-bottom:4px}
h1{margin:0;font-size:clamp(25px,3vw,34px);line-height:1.16;letter-spacing:-.035em}
.heading-note{margin-top:7px;color:var(--text-soft)}
.drop-zone{border:1px dashed var(--line-strong);border-radius:var(--r-lg);background:linear-gradient(135deg,rgba(255,255,255,.82),rgba(248,249,255,.96));min-height:96px;padding:var(--s5);display:flex;align-items:center;gap:var(--s4);margin-bottom:var(--s6);transition:.18s ease}
.drop-zone.dragging{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-1px)}
.drop-icon{width:46px;height:46px;border-radius:14px;background:var(--surface);border:1px solid var(--line);display:grid;place-items:center;color:var(--accent);box-shadow:var(--shadow-sm);flex:none}
.drop-copy strong{display:block;font-size:15px;margin-bottom:3px}
.drop-copy span{color:var(--text-soft)}
.drop-actions{margin-left:auto}
.section{margin-top:var(--s6)}
.section-head{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:var(--s4);margin-bottom:var(--s3)}
.section-title{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:720;letter-spacing:-.01em}
.section-title span{color:#9297a0;font-weight:500}
.view-switch{display:flex;padding:3px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.view-switch button{width:32px;height:30px;border:0;border-radius:7px;background:transparent;display:grid;place-items:center;color:#858a93;cursor:pointer}
.view-switch button.active{background:var(--surface-strong);color:var(--text)}
.folder-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s3)}
.folder-card{position:relative;min-width:0;padding:var(--s4);border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:var(--s3);cursor:pointer;transition:.16s ease}
.folder-card:hover{border-color:var(--line-strong);transform:translateY(-1px);box-shadow:0 8px 22px rgb(15 23 42/.06)}
.folder-icon{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);display:grid;place-items:center;color:var(--accent);flex:none}
.folder-copy{min-width:0}
.folder-name{font-weight:680;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.folder-meta{font-size:12px;color:var(--text-soft);margin-top:2px}
.item-actions{position:absolute;right:8px;top:8px}
.filter-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:var(--s4)}
.chip{height:30px;padding:0 11px;border:1px solid var(--line);border-radius:999px;background:var(--surface);display:inline-flex;align-items:center;gap:6px;color:#555b66;cursor:pointer}
.chip:hover,.chip.active{border-color:#cfd3ff;background:var(--accent-soft);color:#3c49bf}
.file-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--s3)}
.file-card{position:relative;min-width:0;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);overflow:hidden;box-shadow:var(--shadow-sm);transition:.16s ease}
.file-card:hover{border-color:var(--line-strong);transform:translateY(-1px);box-shadow:0 10px 28px rgb(15 23 42/.07)}
.file-open{width:100%;padding:0;border:0;background:transparent;text-align:left;cursor:pointer}
.thumb{aspect-ratio:1.42;background:#eceef2;overflow:hidden;display:grid;place-items:center}
.thumb img,.thumb video{width:100%;height:100%;object-fit:cover;display:block}
.thumb.document{background:linear-gradient(145deg,#f1f3ff,#e6e9fb);color:#5a66d8}
.thumb.video{position:relative;background:linear-gradient(145deg,#232d49,#b8706e)}
.play{position:absolute;width:42px;height:42px;border-radius:50%;background:rgba(20,22,27,.78);color:#fff;display:grid;place-items:center;backdrop-filter:blur(8px)}
.file-info{padding:12px 44px 13px 13px}
.file-name{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-meta{font-size:12px;color:var(--text-soft);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-card .item-actions{top:auto;bottom:9px}
.file-grid.list{grid-template-columns:1fr}
.file-grid.list .file-card{display:grid;grid-template-columns:66px minmax(0,1fr);align-items:center}
.file-grid.list .thumb{aspect-ratio:1;width:66px;height:58px;margin:6px;border-radius:8px}
.file-grid.list .file-info{padding:10px 50px 10px 12px}
.menu{position:fixed;z-index:30;width:176px;padding:6px;border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:var(--shadow-md)}
.menu[hidden]{display:none}
.menu button{width:100%;height:36px;padding:0 10px;border:0;border-radius:8px;background:transparent;display:flex;align-items:center;gap:9px;text-align:left;cursor:pointer}
.menu button:hover,.menu button:focus-visible{background:var(--surface-strong)}
.menu button.danger{color:var(--danger)}
.dialog{width:min(940px,calc(100vw - 32px));max-height:calc(100vh - 32px);padding:0;border:0;border-radius:18px;background:var(--surface);box-shadow:0 30px 90px rgb(15 23 42/.25);overflow:hidden}
.dialog::backdrop{background:rgba(13,16,22,.58);backdrop-filter:blur(6px)}
.media-dialog{width:calc(100vw - 32px);height:calc(100vh - 32px);max-width:none;max-height:none;background:#101216;color:#fff}
.media-stage{height:100%;display:grid;grid-template-columns:64px minmax(0,1fr) 64px;align-items:center}
.media-body{height:100%;min-width:0;display:grid;grid-template-rows:64px minmax(0,1fr) 64px}
.media-top{display:flex;align-items:center;justify-content:space-between;padding:0 10px 0 18px}
.media-title{min-width:0}
.media-title strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.media-title span{font-size:12px;color:#aeb2bc}
.media-content{min-height:0;display:grid;place-items:center;padding:10px}
.media-content img,.media-content video{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px}
.media-caption{display:flex;align-items:center;justify-content:center;color:#afb4be;font-size:12px}
.media-dialog .icon-button{color:#e8e9ed}
.media-dialog .icon-button:hover{background:rgba(255,255,255,.1);color:#fff}
.editor-dialog{width:min(760px,calc(100vw - 32px))}
.dialog-head{height:62px;padding:0 16px 0 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
.dialog-title strong{display:block;font-size:15px}
.dialog-title span{font-size:12px;color:var(--text-soft)}
.editor-body{padding:20px}
.editor-body textarea{width:100%;min-height:380px;resize:vertical;border:1px solid var(--line);border-radius:12px;background:var(--surface-soft);padding:16px;color:var(--text);line-height:1.6}
.dialog-foot{min-height:66px;padding:12px 20px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:flex-end;gap:10px}
.form-dialog{width:min(500px,calc(100vw - 32px))}
.form-body{padding:20px;display:grid;gap:16px}
.dialog-copy{margin:0;color:var(--text-soft)}
.field{display:grid;gap:7px}
.field-label{font-size:13px;font-weight:650}
.field-help{font-size:12px;color:var(--text-soft)}
.field-error,.form-error{font-size:12px;color:var(--danger)}
.field input,.field select,.tag-input{width:100%;height:42px;border:1px solid var(--line);border-radius:11px;background:var(--surface);padding:0 12px;color:var(--text);box-shadow:var(--shadow-sm)}
.field textarea{width:100%;min-height:140px;border:1px solid var(--line);border-radius:11px;background:var(--surface);padding:12px;color:var(--text);resize:vertical}
.form-error{min-height:18px}
.tag-picker{display:grid;gap:12px}
.tag-input-wrap{position:relative}
.suggestions{display:grid;gap:4px;padding:5px;border:1px solid var(--line);border-radius:11px;background:var(--surface-soft)}
.suggestion{width:100%;min-height:36px;border:0;border-radius:8px;background:transparent;padding:0 10px;display:flex;align-items:center;justify-content:space-between;text-align:left;cursor:pointer}
.suggestion:hover,.suggestion.active{background:var(--surface-strong)}
.suggestion span{font-size:12px;color:var(--text-soft)}
.tag-list{display:flex;gap:8px;flex-wrap:wrap}
.tag-list .chip{padding-right:8px}
.tag-list .chip svg{pointer-events:none}
.toast{position:fixed;right:20px;bottom:20px;z-index:50;max-width:360px;padding:12px 14px;border-radius:12px;background:#202329;color:#fff;box-shadow:var(--shadow-md);opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s ease}
.toast.show{opacity:1;transform:none}
.empty{grid-column:1/-1;padding:48px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-md);text-align:center;color:var(--text-soft);background:rgba(255,255,255,.5)}
.auth-shell{min-height:100%;display:grid;grid-template-columns:minmax(320px,.9fr) minmax(420px,1.1fr);background:var(--surface)}
.auth-visual{padding:clamp(28px,5vw,72px);background:linear-gradient(145deg,#f1f3ff,#e8ebff 54%,#f7f7fb);display:flex;flex-direction:column;justify-content:space-between;gap:48px}
.auth-visual .brand{padding:0}
.auth-message{max-width:520px}
.auth-message h1{font-size:clamp(36px,5vw,64px);max-width:700px}
.auth-message p{max-width:480px;margin:18px 0 0;color:var(--text-soft);font-size:16px;line-height:1.65}
.auth-proof{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.proof-item{padding:16px;border:1px solid rgb(88 101 232/.14);border-radius:var(--r-md);background:rgba(255,255,255,.48)}
.proof-item strong{display:block;font-size:13px}
.proof-item span{display:block;margin-top:4px;color:var(--text-soft);font-size:12px}
.auth-main{display:grid;place-items:center;padding:32px}
.auth-card{width:min(410px,100%)}
.auth-card h2{margin:0;font-size:30px;letter-spacing:-.035em}
.auth-card>p{margin:9px 0 26px;color:var(--text-soft)}
.auth-form{display:grid;gap:16px}
.auth-switch{margin-top:20px;text-align:center;color:var(--text-soft)}
.link-button{border:0;background:transparent;padding:0;color:var(--accent);font-weight:650;cursor:pointer}
.key-notice{display:flex;gap:12px;padding:14px;border:1px solid #d9dcff;border-radius:var(--r-md);background:var(--accent-soft);color:#3c49bf;margin-bottom:20px}
.key-notice svg{flex:none;margin-top:1px}
.key-notice strong{display:block;color:#303bb0}
.key-notice span{display:block;margin-top:3px;font-size:12px;line-height:1.5}
.busy{min-height:100%;display:grid;place-items:center;background:var(--canvas)}
.busy-card{display:grid;justify-items:center;gap:14px;color:var(--text-soft)}
.spinner{width:30px;height:30px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .75s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1100px){.file-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:860px){:root{--sidebar:224px}.folder-grid{grid-template-columns:1fr 1fr}.file-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-shell{grid-template-columns:1fr}.auth-visual{display:none}}
@media(max-width:700px){.app{display:block}.sidebar{position:fixed;left:0;top:0;z-index:40;width:min(86vw,280px);transform:translateX(-105%);transition:.2s ease;box-shadow:var(--shadow-md)}.sidebar.open{transform:none}.main{padding:16px 16px 36px}.mobile-menu{display:grid}.topbar{margin-bottom:24px}.search kbd{display:none}.page-heading{align-items:center}.heading-note{display:none}.drop-zone{padding:16px}.drop-actions{display:none}.folder-grid{grid-template-columns:1fr}.file-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.media-stage{grid-template-columns:48px minmax(0,1fr) 48px}.auth-main{padding:22px}.auth-card h2{font-size:27px}}
@media(max-width:430px){.button .label{display:none}.file-grid{grid-template-columns:1fr 1fr}.file-info{padding:10px 36px 11px 10px}.file-meta{font-size:11px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}