:root{--bg:#cfd3cf;--surface:#e4e6df;--screen:#fbfcf7;--paper:#fffffd;--ink:#293630;--soft:#718078;--edge:#8f9c94;--grid:#e7ebe2;--tab:#b4cfce;--blue:#286e9a;--error:#a3343b;--ui:Tahoma,Verdana,Arial,sans-serif;--note:Arial,sans-serif}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{overflow:hidden;background:var(--bg);color:var(--ink);font:12px var(--ui)}
button,input,textarea{font:inherit;color:inherit}
button{min-height:32px;padding:4px 10px;border:1px solid var(--edge);border-radius:3px;background:var(--surface);box-shadow:inset 0 1px 0 #fff,inset 0 -1px 0 #b7beb5;cursor:pointer;white-space:nowrap}
button:active,button.active{background:#bcccca;box-shadow:inset 0 1px 2px #8b9b96}
button:hover{border-color:#556b60}
button:disabled{opacity:.45;cursor:default}
button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
input,textarea{min-width:0;border:1px solid var(--edge);border-radius:2px;background:var(--paper);padding:8px;font-size:16px}
textarea{resize:vertical;width:100%;min-height:68px;max-height:150px;font:16px/1.4 var(--note)}
p{margin:0;line-height:1.5}
main{height:var(--app-height,100%);max-width:1160px;margin:auto;padding:10px;display:flex;flex-direction:column;gap:10px}
header{display:flex;align-items:center;gap:12px;min-height:40px;flex-shrink:0}
.brand{display:flex;align-items:center;gap:7px;font-size:22px;font-weight:bold;letter-spacing:-.7px;text-shadow:0 1px #fff}
.brand svg,.room-select-title svg{width:28px;height:23px;fill:#fff;stroke:var(--ink);stroke-width:1.5}
#room-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:36%;font-size:12px}
#status{margin-left:auto;font-size:10px;color:var(--soft)}
#lobby{flex:1;display:flex;align-items:center;justify-content:center;background:var(--screen);border:2px solid var(--edge);border-radius:5px;box-shadow:inset 0 0 0 3px #fff;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:12px 12px}
#join-form{display:flex;flex-direction:column;gap:14px;width:340px;max-width:calc(100% - 36px);padding:18px;background:var(--screen);border:1px solid var(--edge);border-radius:4px}
.room-select-title{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:bold;padding-bottom:8px;border-bottom:1px solid var(--edge)}
#join-form label{display:flex;flex-direction:column;gap:5px;font-size:12px}
#open-room{min-height:40px;font-size:14px;background:#d3e1de}
#lobby-note{font-size:11px;color:var(--soft)}
#recents{display:flex;flex-direction:column;gap:6px}
#recents button{text-align:left;background:var(--paper);border-left:5px solid var(--tab);min-height:38px;font-size:12px}
#room{display:flex;flex:1;min-height:0;gap:12px}
.conversation{display:flex;flex-direction:column;flex:1;min-width:0;min-height:0;border:2px solid var(--edge);border-radius:5px;background:var(--screen);overflow:hidden;box-shadow:0 1px #f6f8ef}
.presence{display:flex;align-items:center;gap:10px;min-height:33px;flex-shrink:0;padding:4px 8px;background:#dee9e5;border-bottom:1px solid var(--edge)}
.screen-label{font-size:10px;font-weight:bold;letter-spacing:.3px}
#people{font-size:11px;color:#617a70;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#jump{margin-left:auto;font-size:10px;color:var(--blue);min-height:24px;padding:0 5px}
#feed{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable;overflow-anchor:none;padding:17px 12px;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:12px 12px}
#older{display:block;margin:0 auto 15px;font-size:11px;min-height:26px}
#messages{display:flex;flex-direction:column;gap:19px}
.message{--speaker:var(--tab);position:relative;border:1.5px solid var(--speaker);border-radius:5px;background:var(--paper);width:100%;max-width:620px;min-width:90px;box-shadow:0 1px 0 #bcc8bf}
.message::before,.message::after{content:'';position:absolute;width:0;height:0;border-style:solid;border-color:transparent}
.message::before{left:12px;bottom:-13px;border-width:6px;border-top-color:var(--speaker)}
.message::after{left:13px;bottom:-10px;border-width:5px;border-top-color:var(--paper)}
.message-head{position:relative;display:flex;justify-content:flex-end;align-items:center;gap:9px;min-height:19px;padding:2px 6px}
.message-head .name,.name-tab{border:1px solid var(--speaker,var(--tab));background:var(--screen);font-size:12px;font-weight:normal;padding:1px 7px;line-height:17px}
.message-head .name{position:absolute;top:-10px;left:8px;max-width:calc(100% - 105px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;box-shadow:inset 0 2px 0 var(--speaker)}
.message-head time{color:#839388;font-size:9px;white-space:nowrap}
.copy-message{font-size:8px;min-height:18px;padding:1px 4px;box-shadow:none;background:var(--paper);border-color:#d6dfd6}
.message-body{display:flex;flex-direction:column;gap:7px;padding:3px 10px 9px}
.message-text{font:15px/1.4 var(--note);white-space:pre-wrap;overflow-wrap:anywhere}
.message-body img{display:block;max-width:100%;height:auto;cursor:zoom-in;image-rendering:auto}
.picture{max-width:100%}
.image-error{color:var(--error);font-size:10px}
.waiting{opacity:.6}
#empty{font-size:12px;line-height:1.8;color:var(--soft);padding:16px 0}
#composer{flex:0 0 390px;max-width:42%;min-width:0;display:flex;flex-direction:column;gap:8px;padding:9px;border:2px solid var(--edge);border-radius:5px;overflow:auto;background:var(--surface);box-shadow:inset 0 1px #fff}
.composer-tabs{display:flex;align-items:center;gap:4px;min-height:30px;flex-shrink:0}
.composer-tabs button{font-size:10px;min-height:28px;padding:2px 7px}
.name-tab{overflow:hidden;text-overflow:ellipsis;max-width:38%;white-space:nowrap;background:var(--paper)}
#draft-status{font-size:9px;color:var(--soft)}
.spacer{flex:1}
#drawing-tools{display:flex;flex-direction:column;gap:6px}
.tools{display:flex;align-items:center;gap:4px;flex-wrap:wrap;min-height:36px}
#colors{display:flex;gap:2px}
.color{width:28px;height:32px;padding:6px;border-color:transparent;box-shadow:none;background:transparent}
.color span{display:block;width:12px;height:12px;border:1px solid #718076}
.color.active{background:#bfd0cb;border:1px solid var(--edge)}
#eraser svg{display:block;width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:1.3}
#size{font-size:10px;padding:4px 6px}
#undo,#redo{width:30px;font-size:20px;padding:0}
.paper{position:relative;aspect-ratio:1;border:1px solid var(--edge);border-radius:3px;background:var(--paper);background-image:radial-gradient(#d5ded2 1px,transparent 1px);background-size:12px 12px;box-shadow:inset 0 0 0 2px #fff}
.paper canvas{display:block;width:100%;height:100%;touch-action:none;cursor:crosshair}
.paper-actions{display:flex;align-items:center;gap:5px}
.paper-actions button{flex:1;min-height:31px;font-size:10px}
#typing-tools{display:flex;flex-direction:column;gap:5px}
#attached-preview{align-self:flex-start;font-size:10px;min-height:22px}
.send-row{display:flex;align-items:center;gap:8px;flex-shrink:0}
.send-row .error{min-width:0;overflow-wrap:anywhere}
#send{margin-left:auto;min-width:98px;min-height:36px;font-weight:bold;letter-spacing:.7px;background:#d0ded8}
.error{font-size:11px;color:var(--error);white-space:pre-wrap}
dialog{width:calc(100% - 32px);max-width:440px;max-height:92%;overflow:auto;background:var(--screen);border:2px solid var(--edge);border-radius:5px;padding:16px;color:var(--ink)}
dialog::backdrop{background:#263c3355}
dialog form{display:flex;flex-direction:column;gap:14px}
.dialog-title{display:flex;align-items:center;justify-content:space-between;font-size:15px;font-weight:bold}
.dialog-title button{font-size:20px;min-width:32px;padding:0}
.dialog-actions{display:flex;align-items:center;gap:8px}
#copy-state{font-size:11px;color:var(--soft)}
#image-dialog{max-width:95%}
#full-image{display:block;max-width:100%;height:auto;background:var(--paper)}
#save-image{font-size:12px;color:var(--blue);align-self:flex-start}
[hidden]{display:none!important}
#room.drawing-focus #composer{position:fixed;inset:8px;z-index:5;background:var(--surface);max-width:none;width:auto;padding:8px;align-items:stretch}
#room.drawing-focus .conversation{visibility:hidden}
#room.drawing-focus #typing-tools,#room.drawing-focus #type-tab,#room.drawing-focus #draw-tab{display:none}
#room.drawing-focus .paper{width:min(100%,max(100px,calc(var(--app-height,600px) - 205px)));margin-inline:auto}
#room.drawing-focus #drawing-tools{display:flex}
#room.drawing-focus #expand{display:none}
#room.drawing-focus .send-row{margin-top:auto}
@media(max-width:820px){
  main{padding:6px;gap:6px;padding-bottom:calc(6px + env(safe-area-inset-bottom))}
  header{gap:6px;min-height:32px}
  .brand{font-size:18px;gap:4px}.brand svg{width:23px;height:19px}
  #room-title{font-size:10px;max-width:24%}#status{font-size:8px}
  header button{font-size:10px;padding:3px 6px;min-height:28px}
  #room{flex-direction:column;gap:8px}
  .conversation{min-height:85px}
  .presence{min-height:26px;padding:3px 6px;gap:7px}.screen-label{font-size:8px}#people{font-size:10px}
  #feed{padding:15px 9px}
  #messages{gap:18px}.message-text{font-size:14px}
  #composer{flex:0 0 auto;width:100%;max-width:none;padding:6px;gap:5px;overflow:visible}
  .composer-tabs{min-height:26px}.composer-tabs button{min-height:27px}
  .name-tab{font-size:11px}.tools{gap:3px;min-height:34px}
  .color{width:30px;min-height:34px}#undo,#redo{width:31px;min-height:34px}
  .paper{width:100%;margin-inline:auto}
  .paper-actions button{min-height:27px;font-size:9px}
  #drawing-tools{gap:4px}#draft-status{font-size:8px}
  textarea{resize:none;min-height:62px;max-height:120px}
  #room[data-compose="type"] #drawing-tools{display:none}
  #room[data-compose="draw"] #typing-tools{display:none}
  #send{min-height:32px}
}
@media(max-height:500px){.conversation{min-height:72px}}

/* The normal pad is a wide viewport into the page; expansion reveals it all. */
.paper{aspect-ratio:8/5;overflow:hidden}.paper canvas{width:100%;height:auto}.drawing-focus .paper{aspect-ratio:1}.drawing-focus .paper canvas{height:100%}

@media(min-width:600px) and (max-height:500px){
  #room{flex-direction:row}
  #composer{flex:0 0 42%;width:auto;max-width:42%;min-height:0;gap:5px;overflow:auto}
  #drawing-tools{flex:1;min-height:0}
  .paper{flex:1;min-height:65px;aspect-ratio:auto}
  #room[data-compose="draw"] #typing-tools{display:none}
  #room[data-compose="type"] #drawing-tools{display:none}
}

.room-menu{width:390px;max-width:calc(100% - 32px);display:flex;flex-direction:column;gap:12px;padding:18px;background:var(--screen);border:1px solid var(--edge);border-radius:4px}.room-choice{display:flex;align-items:center;gap:12px;text-align:left;min-height:64px;padding:7px 10px;background:var(--paper)}.room-symbol{width:40px;height:40px;border:1px solid #8da9a2;background:#d4e5e0;display:grid;place-items:center;font-size:24px}.room-choice-title{flex:1;font-size:16px}.room-choice-title small{display:block;font-size:10px;color:var(--soft);font-weight:normal;padding-top:4px}#recents button{border-left:1px solid var(--edge);font-size:13px;min-height:64px}#join-dialog #join-form{padding:0;border:0;width:auto;max-width:none}#join-dialog{max-width:360px}