:root{
  --ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --bg:#ECECEF; --panel:#F7F7F8; --line:#DADADF; --text:#1D1D1F; --muted:#6E6E73; --accent:#0A66E4; --accent2:#032E45; --sel:#0A84FF;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:var(--ui);font-size:13px;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font-family:inherit;font-size:13px;color:inherit}
[hidden]{display:none!important}
.view{height:100%}

/* buttons */
.btn{height:32px;padding:0 14px;border-radius:8px;border:1px solid var(--line);background:#fff;cursor:pointer;display:inline-flex;align-items:center;gap:6px;font-weight:500;white-space:nowrap}
.btn:hover{background:#f2f2f4}
.btn.primary{background:var(--accent2);border-color:var(--accent2);color:#fff}
.btn.primary:hover{background:#0b4463}
.btn.ghost{background:transparent}
.btn.play{background:#0A84FF;border-color:#0A84FF;color:#fff}
.btn.play svg{width:14px;height:14px;fill:#fff}
.btn.danger{color:#c0392b}
.ib{width:32px;height:32px;border-radius:8px;border:0;background:transparent;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.ib:hover{background:rgba(0,0,0,.06)}
.ib svg,.tool svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.ib:disabled{opacity:.35;cursor:default}

/* home */
.home-top{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 32px;background:#fff;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:14px}
.brand img{height:22px}
.brand span{font-size:15px;color:var(--muted);letter-spacing:.3px;padding-left:14px;border-left:1px solid var(--line)}
.home-actions{display:flex;gap:10px}
.home-main{padding:40px 48px;max-width:1500px;margin:0 auto}
.home-main h1{font-size:28px;font-weight:600;margin:0 0 6px}
.home-main .sub{color:var(--muted);margin:0 0 28px;font-size:14px}
.deck-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:28px}
.deck-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.06),0 4px 16px rgba(0,0,0,.05);cursor:pointer;transition:transform .15s, box-shadow .15s;position:relative}
.deck-card:hover{transform:translateY(-2px);box-shadow:0 2px 4px rgba(0,0,0,.08),0 10px 28px rgba(0,0,0,.08)}
.deck-thumb{aspect-ratio:16/9;background:#dcdce0;position:relative;overflow:hidden}
.deck-meta{padding:12px 14px;display:flex;justify-content:space-between;align-items:center;gap:8px}
.deck-meta b{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.deck-meta small{color:var(--muted)}
.deck-card .more{position:absolute;top:8px;right:8px;display:none;gap:6px}
.deck-card:hover .more{display:flex}
.deck-card .more button{height:28px;border-radius:7px;border:0;background:rgba(255,255,255,.92);padding:0 10px;cursor:pointer;font-weight:500;box-shadow:0 1px 3px rgba(0,0,0,.15)}

/* editor toolbar */
#editor{display:flex;flex-direction:column}
.tb{height:56px;flex:none;display:flex;align-items:center;justify-content:space-between;padding:0 12px;background:var(--panel);border-bottom:1px solid var(--line);gap:12px}
.tb-left,.tb-right,.tb-center{display:flex;align-items:center;gap:6px}
.tb-left{min-width:0;flex:1}
.tb-right{flex:1;justify-content:flex-end}
.tb-logo{height:22px;margin:0 4px 0 2px}
.deck-title{border:1px solid transparent;background:transparent;border-radius:6px;height:30px;padding:0 8px;font-weight:600;font-size:14px;min-width:120px;max-width:340px;width:26vw}
.deck-title:hover{border-color:var(--line)}
.deck-title:focus{outline:none;border-color:var(--accent);background:#fff}
.save-state{color:var(--muted);font-size:12px;white-space:nowrap}
.sep{width:1px;height:22px;background:var(--line);margin:0 4px}
.tool{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;width:56px;height:46px;border:0;background:transparent;border-radius:8px;cursor:pointer;color:#333}
.tool span{font-size:11px;color:var(--muted)}
.tool:hover{background:rgba(0,0,0,.06)}
.dd{position:relative}
.menu{position:absolute;top:calc(100% + 6px);left:0;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.15);padding:6px;min-width:190px;z-index:50;display:none}
.menu.right{left:auto;right:0}
.menu.open{display:block}
.menu button{display:block;width:100%;text-align:left;border:0;background:transparent;padding:8px 10px;border-radius:6px;cursor:pointer}
.menu button:hover{background:#0A84FF;color:#fff}
.zoom{height:30px;border:1px solid var(--line);border-radius:7px;background:#fff;padding:0 6px}

/* people / presence */
.people{display:flex;align-items:center;gap:6px;margin-right:6px}
.person{display:flex;align-items:center;gap:6px;height:28px;padding:0 10px 0 3px;border-radius:14px;background:#fff;border:1px solid var(--line);font-weight:500;font-size:12px;white-space:nowrap;cursor:default}
.person i{width:22px;height:22px;border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-style:normal;font-size:11px;font-weight:700}
.person.me{cursor:pointer}
.person .where{color:var(--muted);font-weight:400}

/* work area */
.work{flex:1;display:flex;min-height:0}
.nav{width:212px;flex:none;overflow-x:hidden;background:var(--panel);border-right:1px solid var(--line);overflow-y:auto;padding:14px 12px 40px}
.thumb{display:flex;gap:6px;align-items:flex-start;margin-bottom:12px;cursor:pointer;position:relative}
.thumb .num{width:18px;text-align:right;color:var(--muted);font-size:11px;padding-top:2px;flex:none}
.thumb .tv{width:168px;height:94.5px;border-radius:5px;overflow:hidden;position:relative;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.12);flex:none}
.thumb.cur .tv{box-shadow:0 0 0 3px var(--sel)}
.thumb.skip .tv{opacity:.35}
.thumb .tv .slide{transform:scale(.0875);transform-origin:0 0;pointer-events:none}
.thumb.drop-before::before{content:"";position:absolute;left:24px;right:0;top:-7px;height:3px;background:var(--sel);border-radius:2px}
.thumb .dots{position:absolute;right:4px;bottom:4px;display:flex;gap:3px}
.thumb .dots i{width:16px;height:16px;border-radius:50%;border:2px solid #fff;color:#fff;font-size:8px;font-weight:700;font-style:normal;display:flex;align-items:center;justify-content:center}
.thumb .skiptag{position:absolute;left:30px;top:4px;background:#333;color:#fff;font-size:10px;padding:1px 5px;border-radius:4px}
.center{flex:1;display:flex;flex-direction:column;min-width:0}
.stage-wrap{flex:1;overflow:auto;display:flex;position:relative;background:var(--bg)}
.stage-scaler{margin:auto;position:relative;flex:none;box-shadow:0 2px 6px rgba(0,0,0,.12),0 12px 40px rgba(0,0,0,.12)}
.stage{position:absolute;left:0;top:0;width:1920px;height:1080px;transform-origin:0 0;background:#fff}
.notes-bar{flex:none;border-top:1px solid var(--line);background:var(--panel)}
.notes-toggle{border:0;background:transparent;padding:8px 14px;color:var(--muted);cursor:pointer;font-size:12px}
#notes{display:block;width:100%;height:110px;border:0;border-top:1px solid var(--line);resize:vertical;padding:10px 14px;background:#fff;font-size:14px;line-height:1.45}
#notes:focus{outline:none}

/* slide rendering */
.slide{position:absolute;left:0;top:0;width:1920px;height:1080px;overflow:hidden;background:#fff}
.el{position:absolute}
.el .tx{white-space:normal;word-wrap:break-word;overflow-wrap:break-word;outline:none}
.el .tx[contenteditable="true"]{cursor:text;user-select:text;-webkit-user-select:text;caret-color:#0A84FF}
.el-image img{width:100%;height:100%;display:block;pointer-events:none;user-select:none;-webkit-user-drag:none}
.el-table table{width:100%;border-collapse:collapse;table-layout:fixed}
.el-table td{vertical-align:middle;word-wrap:break-word;overflow-wrap:break-word}
.el-table td[contenteditable="true"]{outline:2px solid #0A84FF;outline-offset:-2px;cursor:text}
.el-shape svg{width:100%;height:100%;display:block;overflow:visible}
.stage .el{cursor:default}
.stage .el.locked{pointer-events:none}
.stage .slide{user-select:none;-webkit-user-select:none}

/* overlay: selection */
.ov{position:absolute;left:0;top:0;width:1920px;height:1080px;pointer-events:none}
.selbox{position:absolute;border:var(--bw,2px) solid var(--sel);pointer-events:none}
.selbox.multi{border-style:dashed}
.hnd{position:absolute;width:var(--hs,12px);height:var(--hs,12px);background:#fff;border:var(--bw,2px) solid var(--sel);border-radius:50%;pointer-events:auto;transform:translate(-50%,-50%)}
.hnd[data-h="nw"],.hnd[data-h="se"]{cursor:nwse-resize}.hnd[data-h="ne"],.hnd[data-h="sw"]{cursor:nesw-resize}
.hnd[data-h="n"],.hnd[data-h="s"]{cursor:ns-resize}.hnd[data-h="e"],.hnd[data-h="w"]{cursor:ew-resize}
.rsel{position:absolute;border:var(--bw,2px) solid;pointer-events:none}
.rsel b{position:absolute;left:-2px;bottom:100%;color:#fff;font:600 var(--lf,13px)/1.5 var(--ui);padding:0 .5em;border-radius:4px 4px 4px 0;white-space:nowrap}
.guide{position:absolute;background:#FF2D95;pointer-events:none}
.marq{position:absolute;border:1px solid var(--sel);background:rgba(10,132,255,.08);pointer-events:none}
.lockbadge{position:absolute;right:-1px;top:-1px;background:var(--sel);color:#fff;font:600 11px var(--ui);padding:1px 5px;border-radius:0 0 0 4px}

/* inspector */
.insp{width:292px;flex:none;background:var(--panel);border-left:1px solid var(--line);display:flex;flex-direction:column}
.tabs{display:flex;padding:10px 10px 0;gap:2px;border-bottom:1px solid var(--line)}
.tabs button{flex:1;border:0;background:transparent;padding:8px 0 10px;cursor:pointer;font-weight:600;color:var(--muted);border-bottom:2px solid transparent}
.tabs button.on{color:var(--text);border-bottom-color:var(--text)}
.insp-body{flex:1;overflow-y:auto;padding:4px 14px 40px}
.sec{padding:12px 0;border-bottom:1px solid var(--line)}
.sec:last-child{border-bottom:0}
.sec h4{margin:0 0 10px;font-size:12px;font-weight:600;color:#333}
.row{display:flex;align-items:center;gap:6px;margin-bottom:8px}
.row label{width:74px;color:var(--muted);flex:none}
.row input[type=number],.row input[type=text],.row select{flex:1;min-width:0;height:28px;border:1px solid var(--line);border-radius:6px;background:#fff;padding:0 6px}
.row input[type=range]{flex:1}
.row input[type=color]{width:34px;height:28px;border:1px solid var(--line);border-radius:6px;padding:2px;background:#fff;flex:none}
.grid4{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.grid4 .f{display:flex;flex-direction:column;gap:3px}
.grid4 .f span{color:var(--muted);font-size:11px}
.grid4 input{height:28px;border:1px solid var(--line);border-radius:6px;padding:0 6px;width:100%}
.seg{display:flex;border:1px solid var(--line);border-radius:7px;overflow:hidden;background:#fff;flex:1}
.seg button{flex:1;height:28px;border:0;border-right:1px solid var(--line);background:transparent;cursor:pointer;font-weight:600}
.seg button:last-child{border-right:0}
.seg button.on{background:#e3e3e8}
.seg button svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;vertical-align:middle}
.sw{display:flex;flex-wrap:wrap;gap:6px;margin:4px 0 8px}
.sw button{width:22px;height:22px;border-radius:50%;border:1px solid rgba(0,0,0,.15);cursor:pointer;padding:0}
.wide{width:100%;justify-content:center}
.hint{color:var(--muted);font-size:12px;line-height:1.45;margin:8px 0}
.empty-insp{color:var(--muted);text-align:center;padding:40px 10px;line-height:1.6}
.insp textarea{width:100%;min-height:90px;border:1px solid var(--line);border-radius:6px;padding:8px;resize:vertical;background:#fff}
.imgprev{width:100%;aspect-ratio:16/9;border-radius:6px;overflow:hidden;background:#ddd;margin-bottom:8px;position:relative}
.imgprev img{width:100%;height:100%;object-fit:cover}
.chk{display:flex;align-items:center;gap:8px;margin:6px 0;cursor:pointer}

/* context menu */
.ctx{position:fixed;z-index:200;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.18);padding:6px;min-width:190px}
.ctx button{display:flex;justify-content:space-between;width:100%;text-align:left;border:0;background:transparent;padding:7px 10px;border-radius:6px;cursor:pointer}
.ctx button:hover{background:#0A84FF;color:#fff}
.ctx hr{border:0;border-top:1px solid var(--line);margin:5px 4px}
.ctx kbd{font-family:var(--ui);opacity:.55}

/* present */
#present{position:fixed;inset:0;background:#000;z-index:1000;cursor:none}
#present.mouse{cursor:default}
.pstage{position:absolute;inset:0;overflow:hidden}
.pslot{position:absolute;left:0;top:0;width:1920px;height:1080px;transform-origin:0 0;transition:opacity .6s ease, transform .6s ease}
.pnotes{position:absolute;left:24px;bottom:70px;max-width:760px;background:rgba(0,0,0,.78);color:#eee;padding:16px 18px;border-radius:10px;font-size:18px;line-height:1.5;white-space:pre-wrap}
.phud{position:absolute;right:20px;bottom:18px;display:flex;gap:10px;align-items:center;color:#ccc;font-size:13px;opacity:0;transition:opacity .3s}
#present.mouse .phud{opacity:1}
.phud button{background:rgba(255,255,255,.15);color:#fff;border:0;border-radius:6px;height:28px;padding:0 12px;cursor:pointer}

/* modal & toast */
.modal{position:fixed;inset:0;background:rgba(20,20,30,.38);z-index:500;display:flex;align-items:center;justify-content:center}
.modal-card{background:#fff;border-radius:14px;box-shadow:0 20px 60px rgba(0,0,0,.3);padding:24px;width:420px;max-width:92vw}
.modal-card h3{margin:0 0 6px;font-size:18px}
.modal-card p{margin:0 0 16px;color:var(--muted);line-height:1.5}
.modal-card input[type=text]{width:100%;height:38px;border:1px solid var(--line);border-radius:8px;padding:0 10px;font-size:15px;margin-bottom:16px}
.modal-card .acts{display:flex;justify-content:flex-end;gap:8px}
.bar{height:6px;background:#eee;border-radius:3px;overflow:hidden;margin:6px 0 12px}
.bar i{display:block;height:100%;background:#0A84FF;width:0;transition:width .2s}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#1d1d1f;color:#fff;padding:10px 16px;border-radius:10px;z-index:900;font-weight:500;box-shadow:0 8px 24px rgba(0,0,0,.25)}

#offscreen{position:fixed;left:-30000px;top:0;width:1920px;height:1080px;overflow:hidden}
#print{display:none}
@media print{
  @page{size:1920px 1080px;margin:0}
  html,body{background:#fff}
  body>*{display:none!important}
  #print{display:block!important}
  #print .pp{position:relative;width:1920px;height:1080px;overflow:hidden;page-break-after:always;break-after:page}
  #print .pp .slide{position:absolute}
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}

.sh-lab{display:flex;flex-direction:column;gap:2px;margin:14px 0 6px}
.sh-lab b{font-size:14px}
.sh-lab span{color:var(--muted);font-size:12px}
.modal-card .row .btn{flex:none}
body.view-only #editor{visibility:hidden}
#pend{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:rgba(0,0,0,.72);color:#fff;cursor:default;z-index:5}
#pend button{height:44px;padding:0 26px;border-radius:22px;border:0;background:#fff;color:#1d1d1f;font-weight:600;font-size:16px;cursor:pointer}
#pend p{margin:0;color:#ccc;font-size:14px}