html,body{height:100%}
body{overscroll-behavior:none}
#root{height:100dvh;display:flex;flex-direction:column}
.center{margin:auto;padding:24px;text-align:center}
.auth{max-width:420px;width:100%;margin:auto;padding:24px 16px}
.auth h1{font-size:22px;margin:16px 0 6px}
.auth button{width:100%;margin-top:10px}

/* layout: channel rail on wide screens, drawer on phones */
.shell{flex:1;display:flex;min-height:0}
.rail{width:260px;flex:none;background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.rail-head{padding:14px 14px 8px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.rail-head .room{font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rail-scroll{overflow:auto;flex:1;padding:4px 8px 12px}
.rail h4{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:14px 8px 6px}
.chan{display:flex;align-items:center;gap:6px;width:100%;text-align:left;background:transparent;padding:8px 10px;border-radius:8px;font-weight:500;color:var(--muted)}
.chan.active{background:var(--panel2);color:var(--text);font-weight:600}
.chan .badge{margin-left:auto;background:var(--accent);color:#fff;border-radius:9px;font-size:11px;padding:0 6px;min-width:18px;text-align:center}
.member{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:8px;width:100%;background:transparent;text-align:left;font-weight:500}
.member .avatar{width:28px;height:28px;font-size:12px}
.member .sub{font-size:12px;color:var(--muted);font-weight:400}
.rail-foot{border-top:1px solid var(--line);padding:8px}
.rail-foot button{width:100%;text-align:left;background:transparent;font-weight:500;padding:9px 10px}

.main{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0}
.top{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line);padding-top:max(10px,env(safe-area-inset-top))}
.top .title{font-weight:700}
.top .topic{color:var(--muted);font-size:13px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;flex:1}
.icon{background:transparent;padding:8px;border-radius:8px;font-size:18px;line-height:1;font-weight:400}
.menu-btn{display:none}
.feed{flex:1;overflow:auto;padding:8px 0 12px;-webkit-overflow-scrolling:touch}
.msg{display:flex;gap:10px;padding:6px 14px}
.msg:hover{background:color-mix(in srgb,var(--panel) 60%,transparent)}
.msg.cont{padding-top:0}
.msg.cont .avatar{visibility:hidden;height:0}
.msg .body{min-width:0;flex:1}
.msg .head{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.msg .name{font-weight:700}
.msg .time{color:var(--muted);font-size:12px}
.msg .text{white-space:pre-wrap;word-wrap:break-word;overflow-wrap:anywhere}
.msg .text .mention{background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent);border-radius:4px;padding:0 2px;font-weight:600}
.msg.me-mentioned{background:color-mix(in srgb,var(--accent) 7%,transparent)}
.replyline{font-size:12px;color:var(--muted);margin-bottom:2px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.files{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.file{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px 10px;max-width:280px;font-size:13px;cursor:pointer}
.file .fname{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.thumb{max-width:min(280px,70vw);max-height:240px;border-radius:10px;border:1px solid var(--line);cursor:pointer;display:block}
.reacts{display:flex;gap:6px;flex-wrap:wrap;margin-top:4px}
.react{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:2px 8px;font-size:13px;font-weight:500}
.react.mine{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent)}
.msg .actions{opacity:0;display:flex;gap:2px;align-self:flex-start}
.msg:hover .actions,.msg.touched .actions{opacity:1}
.msg .actions button{background:transparent;padding:4px 6px;font-size:15px;font-weight:400}
.empty{padding:40px 20px;text-align:center;color:var(--muted)}

.composer{border-top:1px solid var(--line);padding:8px 10px;padding-bottom:max(8px,env(safe-area-inset-bottom));position:relative}
.composer .replying{font-size:12px;color:var(--muted);display:flex;justify-content:space-between;margin:0 4px 6px}
.composer .pending{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px}
.composer .pending span{background:var(--panel2);border-radius:8px;padding:3px 8px;font-size:12px}
.composer form{display:flex;gap:6px;align-items:flex-end}
.composer textarea{resize:none;min-height:42px;max-height:160px;border-radius:12px}
.composer .send{padding:10px 14px}
.suggest{position:absolute;bottom:100%;left:10px;right:10px;background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.15);overflow:hidden}
.suggest button{display:flex;align-items:center;gap:8px;width:100%;background:transparent;text-align:left;font-weight:500;border-radius:0}
.suggest button.on{background:var(--panel2)}
.suggest .avatar{width:24px;height:24px;font-size:11px}

.sheet{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:flex-end;justify-content:center;z-index:20}
.sheet-body{background:var(--bg);width:100%;max-width:560px;max-height:92dvh;overflow:auto;border-radius:16px 16px 0 0;padding:18px 16px max(18px,env(safe-area-inset-bottom))}
@media (min-width:760px){.sheet{align-items:center}.sheet-body{border-radius:16px}}
.sheet h2{margin:0 0 4px;font-size:19px}
.sheet .bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.copy{display:flex;gap:6px}
.copy input{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
.steps{padding-left:20px;margin:6px 0}
.steps li{margin:4px 0}
.list>*{border-bottom:1px solid var(--line);padding:10px 0}
.list>*:last-child{border-bottom:0}
.seg{display:flex;gap:6px;flex-wrap:wrap}
.seg button{flex:1;min-width:90px;font-weight:500}
.seg button.on{background:var(--accent);color:#fff}
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:9px 14px;border-radius:10px;font-size:14px;z-index:30;max-width:90vw}
.bigavatar{width:72px;height:72px;font-size:26px}
pre.diff{white-space:pre-wrap;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px;font-size:13px;max-height:220px;overflow:auto}

@media (max-width:759px){
  .rail{position:fixed;inset:0 auto 0 0;width:84vw;max-width:320px;z-index:15;transform:translateX(-102%);transition:transform .2s;padding-top:env(safe-area-inset-top)}
  .rail.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.3)}
  .scrim{position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:14}
  .menu-btn{display:block}
  .msg .actions{opacity:1}
}

.dbtabs{display:flex;gap:6px;flex-wrap:wrap;padding:10px 12px 0}
.dbtabs button{border-radius:999px;padding:5px 12px;font-size:13px}
.dbtabs button.on{background:var(--accent);color:#fff;border-color:transparent}
.dbtabs button.on .muted{color:rgba(255,255,255,.85)}
.dbinfo{padding:6px 14px;margin:0}
.dbgrid{overflow:auto;margin:6px 12px 12px;border:1px solid var(--line);border-radius:10px}
.dbgrid table{border-collapse:collapse;font-size:13px;min-width:100%}
.dbgrid th,.dbgrid td{padding:6px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;max-width:340px;overflow-wrap:anywhere}
.dbgrid th{position:sticky;top:0;background:var(--bg);font-weight:600;white-space:nowrap}
.dbgrid tr:last-child td{border-bottom:0}

/* icons */
.ic{width:18px;height:18px;flex:none;vertical-align:-3px}
.icon .ic{width:20px;height:20px;display:block}
.chan .ic{width:16px;height:16px;opacity:.8}
.replyline .ic,.chip .ic,.tag .ic,.pill .ic{width:13px;height:13px;vertical-align:-2px}
.msg .actions button .ic{width:16px;height:16px;display:block}

/* inline state */
.tag.relay{display:inline-flex;align-items:center;gap:3px;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);border:0;font-weight:600;cursor:pointer}
.msg.flash{background:color-mix(in srgb,var(--accent) 16%,transparent);transition:background .4s}
.pill{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:6px 12px;font-size:13px;font-weight:600;white-space:nowrap}
.pill.warn{background:color-mix(in srgb,#e8a33d 22%,transparent);color:var(--text);border:1px solid color-mix(in srgb,#e8a33d 50%,transparent)}
.badge.quiet{background:var(--panel2)!important;color:var(--muted)!important}

/* cards: tasks and the database on phones */
.seg{padding:10px 12px 0}
.sheet .seg,.stack .seg{padding:0}
.cards,.dbcards{display:flex;flex-direction:column;gap:8px;padding:10px 12px 16px}
.card{display:block;width:100%;text-align:left;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-weight:400;color:var(--text)}
.card-title{font-weight:600;margin-bottom:6px;overflow-wrap:anywhere}
.card.s-done,.card.s-cancelled{opacity:.7}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:4px;background:var(--panel2);border-radius:999px;padding:3px 9px;font-size:12px;font-weight:500;color:var(--muted)}
.chip.st-in_progress,.chip.st-assigned{color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent)}
.chip.st-blocked{color:#b4561c;background:color-mix(in srgb,#e8a33d 18%,transparent)}
.chip.st-done{color:#2f7d4f;background:color-mix(in srgb,#3fae6a 16%,transparent)}
.chip.au-owner,.chip.au-derived{color:var(--text)}
.kv{display:flex;gap:10px;font-size:13px;padding:2px 0}
.kv .k{color:var(--muted);flex:none;min-width:90px}
.kv .v{overflow-wrap:anywhere;min-width:0}
.clamp{margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pre{white-space:pre-wrap;overflow-wrap:anywhere;margin:0}
.task-title{font-size:17px;font-weight:700;overflow-wrap:anywhere}
.chain{list-style:none;padding:0 0 0 14px;margin:4px 0 8px;border-left:2px solid var(--line)}
.chain li{position:relative;padding:4px 0 10px 4px}
.chain li::before{content:'';position:absolute;left:-20px;top:9px;width:10px;height:10px;border-radius:50%;background:var(--accent)}
.chain .quote{margin:4px 0;padding:6px 10px;background:var(--panel);border-radius:8px;font-size:14px;overflow-wrap:anywhere}
.stack.tight>*+*{margin-top:6px}
.seg.wide button{min-width:0}
.rowlink{display:flex;align-items:center;gap:8px;width:100%;background:var(--panel);text-align:left;font-weight:500;min-height:44px}
.rowlink span:first-child{flex:1}
.num{width:96px;flex:none}

@media (max-width:759px){
  .icon{min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center}
  .chan{min-height:44px}
  .seg button,.sheet button,.sheet select,.sheet input:not([type=checkbox]){min-height:44px}
  .msg .actions button{min-width:36px;min-height:36px}
  .top .topic{display:none}
  .top .title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
}