:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;color:#24364b;background:#f1f5fb;--blue:#2467db;--line:#e1e8f2;--muted:#718095;--radius:14px;color-scheme:light}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,.fileButton{cursor:pointer;border:0;border-radius:var(--radius);padding:12px 18px;background:var(--blue);color:#fff;min-height:44px;font-weight:550}button:hover{filter:brightness(.96)}button:disabled{opacity:.5;cursor:wait}button:focus-visible,input:focus-visible,textarea:focus-visible,.fileButton:focus-visible{outline:3px solid #91b7ff;outline-offset:3px}button.secondary{background:white;color:#385779;border:1px solid var(--line)}button.subtle{background:transparent;color:var(--muted);font-size:13px;padding:8px}.danger{background:#b63b47}.shell{max-width:1480px;min-height:100dvh;margin:auto;display:grid;grid-template-columns:260px minmax(0,1fr)}aside{padding:40px 26px;display:flex;flex-direction:column;gap:12px;border-right:1px solid var(--line);background:#f7f9fd}.brand{text-decoration:none;color:var(--blue);font-size:28px;font-weight:750;letter-spacing:3px}.brand span{display:block;font-size:9px;letter-spacing:2px;margin-top:7px}.intro{font-size:25px;line-height:1.7;font-weight:350;letter-spacing:1px;margin:50px 0 30px}aside button{text-align:left}aside button span{float:right}.aside-bottom{margin-top:auto;padding-top:40px;color:var(--muted);font-size:11px;line-height:1.9}main{height:100dvh;position:relative;display:flex;flex-direction:column;min-width:0;background:#fff}header{display:flex;align-items:center;justify-content:space-between;padding:32px 40px 25px;border-bottom:1px solid var(--line);gap:12px}.eyebrow{color:var(--muted);font-size:11px;letter-spacing:2px;margin-bottom:10px}h1{font-size:24px;font-weight:650;margin:0 0 8px;overflow-wrap:anywhere}#connection{font-size:12px;color:var(--muted)}.memberbar{display:flex;gap:12px;align-items:center;padding:14px 40px;border-bottom:1px solid var(--line);min-height:70px;flex-wrap:wrap}#count{font-size:12px;white-space:nowrap;color:var(--muted)}#members{display:flex;gap:5px;flex:1;flex-wrap:wrap}#members button{padding:5px 10px;background:#f2f6fc;color:#4c6581;min-height:32px;font-size:12px;border:1px solid transparent}#members button.selected{border-color:var(--blue);background:#eaf2ff}.call-actions{display:flex;gap:8px}.call-actions button{font-size:12px;padding:8px 13px}#notice{color:#845015;font-size:12px;padding:0 40px;background:#fff9ed}#notice:not(:empty){padding-top:10px;padding-bottom:10px}#messages{flex:1;overflow:auto;overscroll-behavior:contain;padding:25px 40px;scrollbar-width:thin;overflow-anchor:none;min-height:80px}.empty{text-align:center;margin-top:100px;color:#677f9d;font-size:18px;line-height:2}.empty span{font-size:12px;color:#94a3b6}.message{display:flex;flex-direction:column;align-items:flex-start;margin-bottom:22px;max-width:100%;position:relative}.message.mine{align-items:flex-end}.meta{display:flex;gap:10px;font-size:10px;color:var(--muted);margin:0 3px 6px;align-items:center}.meta .delete{font-size:10px;padding:0 4px;min-height:22px;background:transparent;color:#8a6b75}.bubble{background:#f1f5fb;border:1px solid #eaf0f8;border-radius:4px 16px 16px;padding:12px 16px;line-height:1.65;max-width:min(80%,620px);white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}.mine .bubble{background:#edf4ff;border-color:#e2edff;border-radius:16px 4px 16px 16px}.bubble img{max-width:100%;max-height:280px;display:block;cursor:zoom-in;border-radius:9px}.bubble video{max-width:100%;max-height:320px;border-radius:9px}.bubble audio{width:min(260px,100%)}.bubble a{color:var(--blue);display:block;overflow-wrap:anywhere}.bubble small{color:var(--muted);font-size:11px}.bubble.deleted{color:#8b96a7;font-size:12px}.pending{color:#a36c40;font-size:12px;text-align:right;margin-bottom:10px}.pending button{font-size:11px;min-height:32px;margin-left:8px;padding:5px 10px}#composer{display:flex;gap:12px;align-items:flex-end;padding:18px 30px 10px;border-top:1px solid var(--line);background:white}#messageText{resize:none;flex:1;min-width:0;min-height:48px;max-height:160px;border:1px solid var(--line);border-radius:14px;padding:13px 15px;line-height:1.5;color:inherit;background:#fafcff}.tools{display:flex;gap:6px;align-items:center}.fileButton{background:#f1f5fb;color:var(--blue);font-size:22px;padding:8px 14px}.tools button{font-size:12px;padding:11px}footer{display:flex;justify-content:space-between;padding:0 32px calc(14px + env(safe-area-inset-bottom));font-size:10px;color:#8b99ac}#uploadStatus,#recorder{background:#f3f7fd;padding:12px 30px;display:flex;align-items:center;gap:10px;font-size:12px;flex-wrap:wrap}#uploadStatus button,#recorder button{font-size:11px;padding:8px 12px;min-height:34px}#unread{position:absolute;bottom:120px;align-self:center;box-shadow:0 4px 20px #2467db22;font-size:12px}dialog{border:1px solid var(--line);border-radius:22px;width:min(420px,calc(100% - 32px));padding:32px;color:inherit;box-shadow:0 20px 80px #18335c22}dialog::backdrop{background:#152c4966}dialog h2{font-size:25px;margin:10px 0}dialog p{font-size:12px;line-height:1.7;color:var(--muted)}dialog label{display:block;font-size:12px;margin:24px 0}dialog input{display:block;width:100%;margin-top:9px;border:1px solid var(--line);padding:13px;border-radius:12px;background:#fafcff}dialog form>button{width:100%;margin-top:8px}.row{display:flex;gap:12px;justify-content:flex-end}.error{color:#b63b47}.call-panel{padding:15px 30px;background:#f5f8fc;max-height:45dvh;overflow:auto}.controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.controls button{font-size:12px;padding:10px}#callInfo{font-size:12px;margin-bottom:10px}#videos{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px}#videos figure{margin:0;background:#dce6f3;border-radius:12px;overflow:hidden;position:relative;min-height:100px}#videos video{width:100%;height:160px;object-fit:cover;display:block}#videos figcaption{padding:7px 10px;font-size:11px}#lightbox{width:auto;max-width:95vw;max-height:95dvh;padding:12px}#fullImage{display:block;max-width:85vw;max-height:80dvh;margin-top:10px}[hidden]{display:none!important}@media(max-width:850px){.shell{grid-template-columns:185px minmax(0,1fr)}aside{padding:28px 18px}header{padding:23px}#messages{padding:20px 23px}.memberbar{padding:12px 23px}.intro{font-size:21px}#composer{padding:14px 18px 10px;gap:8px}}@media(max-width:620px){.shell{display:block}aside{height:58px;flex-direction:row;align-items:center;gap:6px;padding:8px 12px;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:20px;letter-spacing:1px;margin-right:auto}.brand span,.intro,.aside-bottom{display:none}aside button{font-size:11px;padding:8px 10px;min-height:36px}main{height:calc(100dvh - 58px)}header{padding:17px 16px 14px}header .eyebrow{display:none}h1{font-size:19px}header button{font-size:11px;padding:9px 12px;min-height:36px}.memberbar{padding:9px 14px;gap:6px;min-height:54px}#members{max-width:100%;order:3;flex-basis:100%}#members:empty{display:none}.call-actions{margin-left:auto}#messages{padding:20px 14px}.bubble{max-width:88%;font-size:14px;padding:10px 13px}#composer{padding:12px 10px 8px;gap:6px}#composer>button{padding:12px 13px}.tools{gap:4px}.fileButton{padding:8px 10px}.tools button{padding:10px 7px;font-size:11px}#messageText{padding:11px 10px;font-size:16px}.call-panel{padding:12px 14px}#videos video{height:130px}footer{padding:0 14px calc(10px + env(safe-area-inset-bottom))}footer span:last-child{display:none}#notice{padding-left:14px;padding-right:14px}#uploadStatus,#recorder{padding:10px 14px}}

/* Clean iOS-inspired surfaces; light-only intentionally. */
:root{color:#24272c;background:#f4f5f7;--blue:#1475df;--line:#e1e4e9;--muted:#606976}
body{height:100dvh;overflow:hidden}button,.fileButton,input,textarea{-webkit-tap-highlight-color:transparent}button,.fileButton{border-radius:14px}button.subtle{color:#606976}aside{background:#f7f8fa}.brand{letter-spacing:1px}.brand span{color:#606976}.intro{color:#33383f}header{padding-top:26px;padding-bottom:22px}.bubble{background:#f0f1f4;border-color:#e6e8ed;color:#252a31;border-radius:17px 17px 17px 5px;font-size:15px;line-height:1.75}.mine .bubble{background:#e0efff;border-color:#d1e5fb;border-radius:17px 17px 5px 17px}.meta{font-size:12px;line-height:1.6;color:#606976}.meta .delete{font-size:11px;color:#626975;min-height:28px}.bubble small{display:block;margin-top:6px;line-height:1.65;color:#606976}#members button{background:#f2f4f7;color:#4b535e}#members button.selected{background:#e5f1ff;color:#1566bc}#messageText{background:#f7f8fa;border-color:#dce1e8;font-size:16px}#composer{flex-shrink:0}#send{background:#1475df;min-width:64px;font-weight:650}.fileButton{background:#edf4fd}.empty{color:#515b68}.empty span{color:#606976}footer{color:#606976}.call-panel{background:#f5f6f8}#videos figure{background:#e7ebf0}#videos video{object-fit:contain;background:#1e2227}.secondary{color:#3e536a}dialog{box-shadow:0 14px 48px #182c431a;border-radius:22px}dialog::backdrop{background:#24282f66}#lightbox{padding:14px;background:#fff}#fullVideo{display:block;max-width:85vw;max-height:75dvh;margin-top:12px}#fullImage{object-fit:contain}#renameMobile{padding:4px 0;min-height:24px;border-radius:6px;font-size:11px;color:#606976;background:transparent}#identity{display:flex;align-items:center;gap:8px}.enlarge{margin-top:8px!important;min-height:36px!important;padding:7px 11px!important;background:white!important;color:#1566bc!important;border:1px solid #cbd9e9!important;font-size:12px!important}#messages{scroll-behavior:auto}#unread{box-shadow:0 3px 12px #24364b18}
@media(min-width:621px){#renameMobile{display:none}}
@media(max-width:620px){aside{background:white}main{overflow:hidden}header{padding:18px 16px 14px}header h1{font-size:20px}.memberbar{padding:10px 14px}.bubble{font-size:15px;line-height:1.75;padding:11px 14px}.meta{font-size:11px}.message{margin-bottom:22px}#composer{padding:12px 10px 8px;background:#fff}#messageText{min-height:46px}footer{padding-bottom:calc(7px + env(safe-area-inset-bottom));font-size:11px}#videos{grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}.call-panel{max-height:42dvh}#recorder audio{max-width:100%}dialog{padding:25px}#lightbox{padding:10px}}
@media(max-width:360px){aside{padding-inline:10px;gap:4px}aside button{padding-inline:8px}#composer{gap:4px}.tools button{padding-inline:6px}#send{min-width:54px;padding-inline:10px}.fileButton{padding-inline:8px}}