:root{--bg:#0f1117;--surface:#1a1d27;--border:#2a2d3e;--accent:#7c6dfa;--text:#e2e8f0;--sub:#8892a4;--danger:#f87171;--green:#4ade80;--warn:#fbbf24}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);height:100dvh;overflow:hidden;-webkit-tap-highlight-color:transparent}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
button:disabled{cursor:default}
a{color:var(--accent)}
svg{width:16px;height:16px;flex-shrink:0}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* Layout: the chat column stays 800px and centered; the sidebar uses the space on its right */
#layout{display:flex;width:100%;height:100dvh;position:relative;overflow-x:hidden}
#layout::before{content:"";flex:1 1 0%;min-width:0}
#app{flex:0 1 800px;width:100%;height:100%;display:flex;flex-direction:column;border-left:1px solid var(--border);border-right:1px solid var(--border);background:var(--bg);z-index:2;position:relative;min-width:0}
#sidebar-container{flex:1 1 0%;min-width:0;position:relative}
.sidebar{width:280px;padding:20px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;height:100%;position:absolute;left:0;top:0}

/* Header */
header{padding:12px 16px;padding-top:max(12px,env(safe-area-inset-top));border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;background:var(--surface);flex-shrink:0}
header h1{font-size:.95rem;font-weight:700;flex:1;letter-spacing:.02em;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pill{display:flex;align-items:center;gap:5px;font-size:.75rem;color:var(--sub);padding:4px 8px;border-radius:20px;border:1px solid transparent;user-select:none;transition:border-color .15s,color .15s;white-space:nowrap;flex-shrink:0}
button.pill:hover,button.pill[aria-expanded="true"]{border-color:var(--border);color:var(--text)}
.online-dot{width:7px;height:7px;border-radius:50%;background:var(--green);flex-shrink:0}
.expiry{border-color:var(--border)}
.expiry.soon{color:var(--warn);border-color:var(--warn)}
.expiry.critical{color:var(--danger);border-color:var(--danger)}
#user-info{font-size:.8rem;color:var(--sub);display:flex;align-items:center;gap:8px;flex-shrink:0}
#uname{max-width:120px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#user-info button{font-size:.75rem;padding:3px 8px;border:1px solid var(--border);color:var(--sub);border-radius:4px}
#user-info button:hover{color:var(--text);border-color:var(--text)}

.conn-banner{padding:6px 12px;font-size:.8rem;text-align:center;background:var(--surface);color:var(--warn);border-bottom:1px solid var(--border);flex-shrink:0;animation:slideDown .2s ease-out}
.conn-banner.ok{color:var(--green)}

/* Messages */
.chat{flex:1;position:relative;display:flex;flex-direction:column;min-height:0}
.scroller{flex:1;overflow-y:auto;overflow-x:hidden;overflow-anchor:none;overscroll-behavior:contain}
.scroller::-webkit-scrollbar{width:4px}
.scroller::-webkit-scrollbar-track{background:transparent}
.scroller::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.timeline{padding:16px;min-height:100%;display:flex;flex-direction:column}
.history-edge{margin-top:auto;min-height:24px;display:flex;justify-content:center;align-items:center;color:var(--sub)}
.messages{display:flex;flex-direction:column;gap:6px}

.date-divider{align-self:center;font-size:.72rem;color:var(--sub);padding:2px 10px;background:var(--border);border-radius:10px;margin:6px 0}

.msg{display:flex;flex-direction:column;gap:2px;max-width:72%;position:relative}
.msg.me{align-self:flex-end;align-items:flex-end}
.msg.other{align-self:flex-start;align-items:flex-start}
.msg:not(.start){margin-top:-3px}
.msg-meta{font-size:.7rem;color:var(--sub);display:flex;align-items:center;gap:4px}
.msg:not(.start) .msg-meta{display:none}
.msg-meta .pin-mark{width:11px;height:11px;color:var(--accent)}
.anon-tag{font-size:.65rem;background:var(--border);border-radius:3px;padding:1px 4px;color:var(--sub)}

.bubble-wrap{position:relative;max-width:100%}
.msg-bubble{padding:8px 12px;border-radius:14px;font-size:.88rem;line-height:1.55;word-break:break-word;overflow-wrap:anywhere;transition:box-shadow .6s}
.msg.me .msg-bubble{background:var(--accent);color:#fff;border-bottom-right-radius:3px}
.msg.other .msg-bubble{background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:3px}
.msg-text{white-space:pre-wrap}
.msg-text a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.msg.other .msg-text a{color:var(--accent);text-decoration:none}
.msg.other .msg-text a:hover{text-decoration:underline}
.msg.flash .msg-bubble{box-shadow:0 0 0 2px var(--accent);transition:none}
.msg.sending .msg-bubble{opacity:.7;filter:grayscale(60%);transition:opacity .3s,filter .3s}
.msg.sending .msg-meta{display:flex}
.msg.sending .msg-meta::after{content:"";display:inline-block;width:10px;height:10px;margin-left:6px;border:1.5px solid var(--sub);border-top-color:transparent;border-radius:50%;animation:spin 1s linear infinite;vertical-align:middle}
.msg.failed .msg-bubble{opacity:.6;background:transparent;border:1px solid var(--danger);color:var(--text)}
.msg-status{font-size:.7rem;color:var(--danger);display:flex;gap:8px;align-items:center}
.msg-status button{color:var(--sub);text-decoration:underline;font-size:.7rem}
.msg-status button:hover{color:var(--text)}

.msg.system{align-self:center;max-width:90%}
.msg.system .msg-bubble{background:transparent;color:var(--sub);font-size:.78rem;border:1px solid var(--border);border-radius:8px;padding:4px 14px;text-align:center}

/* Quoted message in bubble */
.msg-quote{display:block;width:100%;text-align:left;border-left:2px solid var(--accent);padding:4px 8px;margin-bottom:6px;font-size:.8rem;background:#0002;border-radius:0 6px 6px 0;opacity:.8;color:inherit}
.msg.me .msg-quote{border-left-color:rgba(255,255,255,.7)}
.msg-quote:hover{opacity:1}
.quote-author{font-weight:600;margin-bottom:2px}
.quote-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.msg-quote.gone .quote-text{font-style:italic}

/* Files */
.msg-file{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;background:var(--surface);border:1px solid var(--border);text-decoration:none;color:var(--text);max-width:260px}
.msg-file:hover{border-color:var(--accent)}
.msg-file .file-icon{color:var(--sub);flex-shrink:0}
.msg-file .file-icon svg{width:20px;height:20px}
.msg-file-info{min-width:0;flex:1}
.msg-file-name{font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.msg-file-size{font-size:.72rem;color:var(--sub);margin-top:1px}
.msg-file .dl{color:var(--sub)}
.msg-img{max-width:260px;max-height:320px;border-radius:12px;display:block;cursor:zoom-in;background:#0002}
.msg-bubble>.msg-img+.msg-text,.msg-bubble>.msg-file+.msg-text,.msg-bubble>video+.msg-text{margin-top:6px}
.msg-img.sized{width:var(--w);aspect-ratio:var(--ratio);height:auto;max-height:none}
video.msg-media,audio.msg-media{display:block;max-width:min(320px,100%);border-radius:12px}
.file-gone{color:var(--sub);font-style:italic}

.upload-box{display:flex;flex-direction:column;gap:4px;min-width:180px}
.upload-head{display:flex;justify-content:space-between;font-size:.85rem;gap:12px;align-items:center}
.upload-head span:first-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;gap:4px;align-items:center}
.upload-head svg{width:13px;height:13px}
.upload-pct{color:var(--accent);font-weight:bold}
.me .upload-pct{color:rgba(255,255,255,.9)}
.upload-bar{width:100%;height:6px;background:rgba(255,255,255,.1);border-radius:3px;overflow:hidden;margin-top:2px}
.upload-fill{height:100%;background:var(--accent);width:0%;transition:width .2s ease-out}
.me .upload-fill{background:rgba(255,255,255,.9)}
.me .upload-bar{background:rgba(255,255,255,.2)}
.upload-cancel{font-size:.72rem;color:inherit;opacity:.8;text-decoration:underline;align-self:flex-start}
.upload-preview{max-width:200px;max-height:160px;border-radius:8px;display:block;margin-bottom:4px}

/* Markdown */
.msg-text-md{line-height:1.5;font-size:.95rem;word-break:break-word;white-space:normal}
.msg-text-md p{margin:0 0 6px 0}
.msg-text-md p:last-child,.msg-text-md>:last-child{margin-bottom:0}
.msg-text-md pre{background:rgba(255,255,255,.12);padding:8px;border-radius:6px;overflow-x:auto;margin:4px 0;font-family:monospace;font-size:.85rem}
.msg-text-md code{font-family:monospace;background:rgba(255,255,255,.12);padding:2px 4px;border-radius:4px;font-size:.9em}
.msg-text-md pre code{background:none;padding:0}
.msg-text-md ul,.msg-text-md ol{margin:0 0 6px 0;padding-left:20px}
.msg-text-md blockquote{border-left:3px solid var(--accent);margin:4px 0;padding-left:10px;color:var(--sub);opacity:.9}
.msg.me .msg-text-md blockquote{border-left-color:rgba(255,255,255,.7);color:inherit}
.msg-text-md img{max-width:100%;height:auto;border-radius:6px;margin:4px 0}
.msg-text-md a{color:var(--accent);text-decoration:none}
.msg.me .msg-text-md a{color:#fff;text-decoration:underline}
.msg-text-md a:hover{text-decoration:underline}
.msg-text-md h1,.msg-text-md h2,.msg-text-md h3,.msg-text-md h4{font-size:1em;margin:4px 0}
.msg-text-md table{border-collapse:collapse;display:block;overflow-x:auto;font-size:.85rem}
.msg-text-md th,.msg-text-md td{border:1px solid var(--border);padding:2px 6px}
.katex-display{overflow-x:auto;overflow-y:hidden}

/* Reactions */
.msg-reactions{display:flex;flex-wrap:wrap;gap:4px;margin-top:2px}
.msg-reactions:empty{display:none}
.react-tag{display:inline-flex;align-items:center;gap:4px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:2px 6px;font-size:.75rem;cursor:pointer;user-select:none}
.react-tag:hover{border-color:var(--accent)}
.react-tag.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.react-tag.active small{color:#fff}
.react-tag small{color:var(--sub);font-size:.7rem;font-weight:600}
.react-tag.pop{animation:pop .3s ease-out}

/* Hover actions next to a bubble */
.msg-tools{position:absolute;top:50%;left:calc(100% + 6px);margin-top:-15px;display:flex;gap:2px;padding:2px;background:var(--surface);border:1px solid var(--border);border-radius:8px;opacity:0;pointer-events:none;transition:opacity .12s;z-index:3}
.msg.me .msg-tools{left:auto;right:calc(100% + 6px)}
.msg-tools button{width:26px;height:24px;border-radius:6px;display:grid;place-items:center;color:var(--sub)}
.msg-tools button:hover{background:var(--bg);color:var(--accent)}
.msg-tools svg{width:14px;height:14px}
@media (hover:hover){.msg:hover .msg-tools,.msg:focus-within .msg-tools,.msg.menu-open .msg-tools{opacity:1;pointer-events:auto}}
@media (hover:none){.msg-bubble{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}}

/* Only messages that arrive while the page is open animate in */
@keyframes msgFadeSlide{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.msg.enter{animation:msgFadeSlide .2s cubic-bezier(0,0,.2,1)}
.msg.leave{animation:msgLeave .2s ease-in forwards;pointer-events:none}
@keyframes msgLeave{to{opacity:0;transform:scale(.96);max-height:0;margin:0}}

.new-pill{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);display:flex;align-items:center;gap:6px;padding:6px 12px 6px 9px;border-radius:20px;font-size:.78rem;color:#fff;background:var(--accent);box-shadow:0 8px 32px #0006;animation:pillIn .2s ease-out;z-index:5}
.new-pill svg{width:14px;height:14px}

.drop-zone{position:absolute;inset:10px;border:2px dashed var(--accent);border-radius:12px;background:#0f1117cc;display:grid;place-items:center;font-size:.9rem;color:var(--accent);z-index:30;pointer-events:none;animation:fadeIn .15s}

/* Composer */
.composer{flex-shrink:0;position:relative}
.activity{font-size:.75rem;color:var(--sub);height:16px;margin-left:14px;margin-bottom:2px;display:flex;align-items:center;gap:4px}
.dots{display:inline-flex;gap:2px;margin-left:1px}
.dots i{width:3px;height:3px;border-radius:50%;background:currentColor;animation:dot 1.2s infinite ease-in-out}
.dots i:nth-child(2){animation-delay:.15s}
.dots i:nth-child(3){animation-delay:.3s}
.reply-bar{background:var(--surface);border-top:1px solid var(--border);padding:8px 14px;display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--sub);animation:slideUp .15s ease-out}
.reply-text{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reply-text b{color:var(--text)}
.reply-bar button{color:var(--sub);font-size:1.2rem;padding:0 4px}
.reply-bar button:hover{color:var(--text)}
.tray{background:var(--surface);border-top:1px solid var(--border);padding:8px 14px;display:flex;gap:8px;overflow-x:auto;animation:slideUp .15s ease-out}
.tray-item{position:relative;flex:none;width:64px}
.tray-item .thumb{width:64px;height:64px;border-radius:8px;object-fit:cover;display:grid;place-items:center;background:var(--bg);border:1px solid var(--border);color:var(--sub)}
.tray-item .thumb svg{width:22px;height:22px}
.tray-item small{display:block;font-size:.65rem;color:var(--sub);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.tray-item .remove{position:absolute;top:-5px;right:-5px;width:18px;height:18px;border-radius:50%;display:grid;place-items:center;background:var(--border);color:var(--text)}
.tray-item .remove svg{width:10px;height:10px}
.input-area{padding:10px 14px;padding-bottom:max(10px,env(safe-area-inset-bottom));border-top:1px solid var(--border);background:var(--surface);display:flex;gap:8px;align-items:flex-end}
#input{flex:1;min-width:0;background:var(--bg);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:10px;font-size:.9rem;line-height:1.5;resize:none;height:40px;min-height:40px;max-height:calc(4*1.5em + 20px);overflow-y:hidden;outline:none;transition:height .1s ease,border-color .15s}
#input:focus{border-color:var(--accent)}
#input::placeholder{color:var(--sub)}
.upload-btn,.send-btn{flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:all .15s}
.upload-btn{color:var(--sub);padding:8px;border-radius:8px;width:36px;height:36px;margin-bottom:2px}
.upload-btn svg{width:18px;height:18px}
.upload-btn:hover{color:var(--text);background:var(--border)}
.send-btn{background:var(--accent);color:#fff;padding:8px;border-radius:10px;width:38px;height:38px;margin-bottom:1px}
.send-btn:hover:not(:disabled){opacity:.85}
.send-btn:active:not(:disabled){transform:scale(.92)}
.send-btn:disabled{opacity:.4}

/* Room states (missing / destroyed / loading) */
.room-state{min-height:100%;display:grid;place-items:center;padding:24px}
.room-state .modal-box{animation:fadeIn .2s ease-out}
.skeleton{width:100%;max-width:560px;display:flex;flex-direction:column;gap:12px}
.skeleton i{display:block;height:36px;border-radius:14px;background:var(--surface);border:1px solid var(--border);animation:breathe 1.4s ease-in-out infinite}
.skeleton i:nth-child(1){width:45%}
.skeleton i:nth-child(2){width:60%;animation-delay:.15s}
.skeleton i:nth-child(3){width:35%;align-self:flex-end;animation-delay:.3s}

/* Sidebar */
.side-panel{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px}
.side-panel:empty{display:none}
.side-panel h3{font-size:.85rem;font-weight:600;color:var(--text);margin-bottom:12px;display:flex;align-items:center;gap:6px}
.side-panel h3 svg{width:15px;height:15px}
.hint{font-size:.75rem;color:var(--sub);margin-bottom:8px;line-height:1.5}
.side-input{width:100%;background:var(--bg);border:1px solid var(--border);color:var(--text);padding:8px 12px;border-radius:8px;font-size:.85rem;outline:none;transition:border .2s}
.side-input:focus{border-color:var(--accent)}
.stat-line{display:flex;justify-content:space-between;font-size:.8rem;color:var(--sub);margin-bottom:8px}
.stat-bar{height:6px;background:var(--bg);border-radius:3px;overflow:hidden;margin-bottom:16px}
#stat-bar-inner{height:100%;background:var(--accent);width:0%;transition:width .5s ease-out}
.panel-toggle{width:100%;display:flex;justify-content:space-between;align-items:center;font-size:.85rem;font-weight:600;color:var(--text);text-align:left}
.panel-toggle>span:first-child{display:flex;align-items:center;gap:6px}
.panel-toggle svg{width:15px;height:15px}
.panel-toggle .arrow{font-size:.7rem;transition:transform .2s}
.panel-toggle[aria-expanded="false"] .arrow{transform:rotate(-90deg)}
.panel-body{display:flex;flex-direction:column;gap:8px;margin-top:16px;animation:slideDown .15s ease-out}
.count{font-size:.7rem;color:var(--sub);font-weight:400}
.check{cursor:pointer;display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--text);user-select:none}
.check input{accent-color:var(--accent)}
.empty{font-size:.8rem;color:var(--sub)}

.result-list{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.result-list:empty{display:none}
.pin-item,.result{display:block;width:100%;text-align:left;font-size:.8rem;background:var(--bg);padding:6px 8px;border-radius:6px;border-left:3px solid var(--sub);color:inherit}
.pin-item:hover,.result:hover{background:#151824}
.pin-head{display:flex;justify-content:space-between;margin-bottom:3px;align-items:center;gap:8px}
.pin-head b{color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pin-head span{color:var(--sub);font-size:.7rem;white-space:nowrap}
.pin-text{color:var(--sub);word-break:break-all;line-height:1.4;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.result mark{background:#7c6dfa55;color:var(--text);border-radius:2px}

.room-info{display:grid;grid-template-columns:auto 1fr;gap:4px 10px;font-size:.8rem;margin-bottom:10px}
.room-info dt{color:var(--sub)}
.room-info dd{color:var(--text);overflow-wrap:anywhere}
.link-box{display:flex;align-items:center;gap:6px;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:6px 6px 6px 10px;margin-bottom:10px}
.link-box code{flex:1;min-width:0;font-size:.75rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}
.link-box button{color:var(--sub);padding:2px;border-radius:4px;display:grid;place-items:center}
.link-box button:hover{color:var(--text)}
.room-list{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}
.room-item{display:block;font-size:.8rem;background:var(--bg);padding:6px 8px;border-radius:6px;border-left:3px solid var(--border);text-decoration:none;color:inherit}
.room-item:hover,.room-item.current{border-left-color:var(--accent)}
.room-item b{display:block;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600}
.room-item small{color:var(--sub);font-size:.7rem}
.row{display:flex;gap:8px;flex-wrap:wrap}
.side-sub{font-size:.78rem;font-weight:600;color:var(--sub);margin:14px 0 8px}

#file-list{max-height:340px;overflow:auto;font-size:.8rem;margin-top:8px}
.file-row{padding:10px 0;border-bottom:1px solid var(--border);overflow-wrap:anywhere;display:flex;flex-direction:column;gap:2px}
.file-row small{color:var(--sub);font-size:.7rem}
.file-row.leaving{animation:msgLeave .2s ease-in forwards}
.delete-message{align-self:flex-start;color:var(--danger);font-size:.72rem;padding:4px 0}
.delete-message:hover{text-decoration:underline}

/* Buttons */
.btn-primary,.btn-ghost,.btn-danger{padding:9px;border-radius:8px;font-size:.88rem;font-weight:500;display:inline-flex;align-items:center;justify-content:center;gap:6px;text-decoration:none}
.btn-primary{background:var(--accent);color:#fff;border:none}
.btn-primary:hover:not(:disabled){opacity:.9}
.btn-primary:disabled{opacity:.5}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--sub)}
.btn-ghost:hover{color:var(--text);border-color:var(--text)}
.btn-danger{background:transparent;border:1px solid var(--danger);color:var(--danger)}
.btn-danger.solid{background:var(--danger);color:#fff}
.btn-danger:hover{opacity:.85}
.small{padding:6px 10px;font-size:.8rem}
.btn-primary svg,.btn-ghost svg,.btn-danger svg{width:14px;height:14px}

/* Modals */
.modal-wrap{position:fixed;inset:0;background:#000b;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;transition:opacity .2s ease}
.modal-wrap.open{opacity:1}
.modal-box{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;width:320px;max-width:100%;display:flex;flex-direction:column;gap:14px}
.modal-wrap .modal-box{transform:translateY(10px) scale(.98);transition:transform .2s cubic-bezier(0,0,.2,1)}
.modal-wrap.open .modal-box{transform:none}
.modal-box h2{font-size:1rem;font-weight:600;overflow-wrap:anywhere}
.modal-box p{font-size:.82rem;color:var(--sub);overflow-wrap:anywhere}
.modal-box input[type=text],.modal-box input[type=email],.modal-box input[type=password]{background:var(--bg);border:1px solid var(--border);color:var(--text);padding:9px 12px;border-radius:8px;font-size:.9rem;outline:none;width:100%}
.modal-box input:focus{border-color:var(--accent)}
.modal-box form{display:flex;flex-direction:column;gap:14px}
.modal-box .btn-row{display:flex;gap:8px;margin-top:4px}
.modal-box .btn-row>*{flex:1}
.form-err{color:var(--danger);font-size:.8rem;min-height:1em}
.prefix-input{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:8px}
.prefix-input:focus-within{border-color:var(--accent)}
.prefix-input em{font-style:normal;color:var(--sub);font-size:.85rem;padding-left:12px;white-space:nowrap}
.modal-box .prefix-input input{border:0;padding-left:2px;background:transparent}
.preview-link{font-size:.75rem;color:var(--sub);overflow-wrap:anywhere;margin-top:-6px}

/* Popovers: context menu, online list */
.popover{position:fixed;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:0 8px 32px #0006;min-width:160px;max-width:calc(100vw - 16px);max-height:calc(100dvh - 80px);overflow-y:auto;user-select:none;opacity:0;transform:scale(.96);transform-origin:var(--origin,top right);transition:opacity .12s,transform .14s cubic-bezier(0,0,.2,1)}
.popover.open{opacity:1;transform:none}
.popover h4{font-size:.75rem;color:var(--sub);margin:6px 6px 8px;font-weight:400}
.ctx-reactions{display:flex;gap:8px;padding:6px;align-items:center}
.ctx-reactions button{font-size:1.2rem;transition:transform .1s;line-height:1}
.ctx-reactions button:hover{transform:scale(1.2)}
.ctx-reactions input{width:40px;background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:4px;text-align:center;font-size:.9rem;outline:none}
.ctx-reactions input:focus{border-color:var(--accent)}
.ctx-divider{height:1px;background:var(--border);margin:4px 0}
.ctx-item{width:100%;padding:8px 10px;border-radius:6px;font-size:.85rem;display:flex;align-items:center;gap:8px;color:var(--text);text-align:left}
.ctx-item svg{width:14px;height:14px}
.ctx-item:hover,.ctx-item:focus-visible{background:var(--bg);color:var(--accent);outline:none}
.ctx-item.danger,.ctx-item.danger:hover{color:var(--danger)}
.online-item{display:flex;align-items:center;gap:8px;font-size:.85rem;padding:3px 6px}
.online-avatar{width:24px;height:24px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:600;color:#fff;flex-shrink:0}
.online-avatar.anon{background:var(--border)}
.online-item small{font-size:.7rem;color:var(--sub)}

.sheet-wrap{position:fixed;inset:0;background:rgba(0,0,0,.4);opacity:0;transition:opacity .2s}
.sheet-wrap.open{opacity:1}
.sheet{position:absolute;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--border);border-radius:16px 16px 0 0;padding:10px 10px max(14px,env(safe-area-inset-bottom));transform:translateY(100%);transition:transform .25s cubic-bezier(0,0,.2,1)}
.sheet-wrap.open .sheet{transform:none}
.sheet .ctx-reactions{justify-content:space-around;padding:8px 6px 12px}
.sheet .ctx-reactions button{font-size:1.5rem}
.sheet .ctx-item{padding:12px 10px;font-size:.95rem}

.lightbox{position:fixed;inset:0;display:grid;place-items:center;background:rgba(0,0,0,.9);opacity:0;transition:opacity .2s;cursor:zoom-out}
.lightbox.open{opacity:1}
.lightbox img{max-width:94vw;max-height:86dvh;border-radius:6px;transform:scale(.95);transition:transform .2s cubic-bezier(0,0,.2,1)}
.lightbox.open img{transform:none}
.lightbox .bar{position:absolute;top:max(12px,env(safe-area-inset-top));right:12px;display:flex;gap:8px}
.lightbox .bar a,.lightbox .bar button{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:#fff;background:rgba(255,255,255,.12)}
.lightbox .caption{position:absolute;bottom:max(16px,env(safe-area-inset-bottom));left:16px;right:16px;text-align:center;color:var(--sub);font-size:.8rem;overflow-wrap:anywhere}

.toasts{position:fixed;left:50%;top:max(60px,calc(env(safe-area-inset-top) + 56px));transform:translateX(-50%);z-index:1200;display:flex;flex-direction:column;align-items:center;gap:6px;pointer-events:none;max-width:calc(100vw - 24px)}
.toast{padding:8px 14px;border-radius:8px;font-size:.82rem;background:var(--surface);border:1px solid var(--border);color:var(--text);box-shadow:0 8px 32px #0006;animation:toastIn .2s ease-out;overflow-wrap:anywhere}
.toast.error{border-color:var(--danger);color:var(--danger)}
.toast.out{animation:toastOut .2s ease-in forwards}
.spinner{width:14px;height:14px;border-radius:50%;border:1.5px solid var(--sub);border-top-color:transparent;animation:spin 1s linear infinite;display:inline-block}

.layer-root{position:relative;z-index:1100}
.edge-tab,.overlay{display:none}

/* Below 1200px the sidebar no longer fits beside the column: it becomes a drawer opened from the edge tab */
@media (max-width:1199px){
  #sidebar-container{position:fixed;top:0;right:0;bottom:0;width:280px;z-index:1000;background:var(--surface);box-shadow:-4px 0 15px rgba(0,0,0,.1);transform:translateX(100%);visibility:hidden;transition:transform .3s cubic-bezier(.4,0,.2,1),visibility 0s .3s}
  #layout.side-open #sidebar-container{transform:none;visibility:visible;transition:transform .3s cubic-bezier(.4,0,.2,1)}
  .sidebar{padding-top:max(20px,env(safe-area-inset-top))}
  .edge-tab{display:flex;align-items:center;justify-content:center;position:fixed;top:50%;right:0;transform:translateY(-50%);width:24px;height:48px;background:var(--surface);border:1px solid var(--border);border-right:none;border-radius:8px 0 0 8px;box-shadow:-2px 0 8px rgba(0,0,0,.05);z-index:1001;color:var(--sub);transition:right .3s cubic-bezier(.4,0,.2,1)}
  .edge-tab svg{transition:transform .3s}
  .edge-tab[aria-expanded="true"]{right:280px}
  .edge-tab[aria-expanded="true"] svg{transform:rotate(180deg)}
  .overlay{display:block;position:fixed;inset:0;background:rgba(0,0,0,.2);z-index:999;backdrop-filter:blur(2px);opacity:0;transition:opacity .3s}
  .overlay.open{opacity:1}
}
@media (max-width:800px){
  #app{border:0}
  .msg{max-width:82%}
}
@media (max-width:480px){
  header{gap:8px;padding-left:12px;padding-right:12px}
  #uname{display:none}
}

@keyframes spin{to{transform:rotate(360deg)}}
@keyframes fadeIn{from{opacity:0}}
@keyframes slideUp{from{opacity:0;transform:translateY(6px)}}
@keyframes slideDown{from{opacity:0;transform:translateY(-6px)}}
@keyframes pillIn{from{opacity:0;transform:translate(-50%,8px)}}
@keyframes toastIn{from{opacity:0;transform:translateY(-8px)}}
@keyframes toastOut{to{opacity:0;transform:translateY(-6px)}}
@keyframes pop{0%{transform:scale(.6)}60%{transform:scale(1.15)}100%{transform:none}}
@keyframes dot{0%,60%,100%{opacity:.35;transform:none}30%{opacity:1;transform:translateY(-2px)}}
@keyframes breathe{50%{opacity:.4}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}