:root{color-scheme:dark;--bg:#101113;--panel:#151719;--raised:#1d2023;--border:#2b2f33;--text:#eeefec;--muted:#a2aaa9;--mint:#b6ebca;--green:#71c69a;--warn:#ddc49a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.6 Inter,"Segoe UI","Microsoft YaHei",sans-serif}button,input,select,textarea{font:inherit}button{min-height:42px;border:1px solid var(--border);border-radius:9px;background:var(--raised);color:var(--text);padding:8px 14px;cursor:pointer;transition:background .15s}button:hover{background:#2b3033}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--mint);outline-offset:3px}input,select,textarea{color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px;min-width:0}.app{display:grid;grid-template-columns:244px minmax(300px,1fr) 292px;min-height:100dvh;max-width:1900px;margin:auto}.sidebar{background:var(--panel);padding:30px 19px 22px;border-right:1px solid var(--border);display:flex;flex-direction:column}.brand{display:flex;gap:10px;align-items:center;color:var(--text);text-decoration:none;font-size:18px;font-weight:600;letter-spacing:-.5px;margin:0 3px 48px}.brand-mark{display:grid;place-items:center;width:36px;height:36px;background:var(--mint);color:#18241b;border-radius:10px;font-size:24px}.brand small{display:block;color:var(--muted);font-size:11px;font-weight:400;letter-spacing:1px;margin-top:3px}.section-label{font-size:11px;letter-spacing:1.5px;color:var(--muted);display:flex;justify-content:space-between;text-transform:uppercase}.section-label>span{font-family:monospace}.room{margin-top:15px;padding:14px 11px;background:#252b28;border:1px solid #35443a;border-radius:10px;display:flex;align-items:center;gap:10px}.room small,.device small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.room-dot,.tiny-dot{width:7px;height:7px;background:var(--mint);border-radius:50%;display:inline-block}.devices-label{margin:35px 5px 17px}.device{display:flex;align-items:center;gap:11px;padding:13px 5px}.device strong{font-size:13px;font-weight:500}.avatar{display:grid;place-items:center;width:31px;height:31px;border-radius:9px;background:#2b3530;color:var(--mint);font-size:12px;flex-shrink:0}.avatar.ued{background:#30303c;color:#cec4ef}.status-dot{width:6px;height:6px;background:#707777;border-radius:50%;margin-left:auto}.sidebar-bottom{margin-top:auto;padding:60px 6px 0;font-size:12px;color:var(--muted)}.sidebar-bottom .tiny-dot{background:var(--warn);margin-right:4px}.sidebar-bottom small{display:block;margin:6px 0 0 15px;color:var(--muted)}main{padding:35px 36px 24px;min-width:0;height:100dvh;display:flex;flex-direction:column}header{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:28px}.eyebrow{font:10px/1.5 ui-monospace,Consolas,monospace;color:var(--muted);letter-spacing:1.9px}h1{font-size:26px;font-weight:500;letter-spacing:1px;margin:8px 0}header p{margin:0;color:var(--muted);font-size:12px}header button{font-size:12px;white-space:nowrap;background:transparent}.notice{display:flex;gap:11px;background:#21241f;border:1px solid #3c4234;border-radius:10px;padding:12px 14px;font-size:11px;color:#c5c8b9}.notice-symbol{border:1px solid #9aa183;width:17px;height:17px;display:grid;place-items:center;flex-shrink:0;border-radius:50%;margin-top:3px}.notice strong{display:block;font-size:12px;font-weight:500;color:#e1e3d0}.notice span:not(.notice-symbol){display:block;margin-top:4px}.conversation{flex:1;min-height:180px;overflow:auto;overscroll-behavior:contain;padding:20px 0}.empty{min-height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:25px 0}.empty-art{display:flex;align-items:center;gap:20px;margin-bottom:17px}.empty-art span{display:grid;place-items:center;width:52px;height:52px;border:1px solid #39443c;background:#202923;border-radius:16px;font-size:18px;color:var(--mint);transform:rotate(-5deg)}.empty-art span:last-child{background:#272532;border-color:#403c4c;color:#cec4ef;transform:rotate(5deg)}.empty-art i{color:#727c75;font-style:normal;letter-spacing:5px}.empty h2{font-size:19px;letter-spacing:1px;font-weight:400;margin:10px 0}.empty p{color:var(--muted);font-size:12px;line-height:1.9;margin:0}.empty-caption{font-size:10px;color:var(--muted);margin-top:28px;letter-spacing:1px}#composer{border:1px solid #3a403c;border-radius:13px;padding:13px 15px 12px;background:#191c1b}.compose-top{display:flex;align-items:center;gap:10px;font-size:11px;color:var(--muted)}.compose-top select{border:0;padding:3px 20px 3px 0;background:transparent;font-size:12px}.compose-top>span{margin-left:auto;font-size:10px}.compose-top label{white-space:nowrap}textarea{display:block;width:100%;resize:vertical;min-height:80px;max-height:230px;background:transparent;border:0;padding:13px 0;font-size:13px;line-height:1.7}textarea::placeholder{color:#939c99}.compose-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px}.compose-bottom>span{font-size:10px;color:var(--muted)}.primary{background:var(--mint);color:#14271d;border-color:var(--mint);font-weight:600;font-size:12px}.primary:hover{background:#d0f6de}.primary span{margin-left:10px}.details{border-left:1px solid var(--border);padding:36px 25px;background:#131517}.details h2{font-size:17px;font-weight:500;margin:22px 0 8px}.details>p{font-size:12px;color:var(--muted);margin:0 0 28px}.setup-step{display:flex;gap:11px;margin:22px 0}.setup-step>span{border:1px solid #414843;color:var(--muted);border-radius:50%;width:22px;height:22px;text-align:center;flex-shrink:0;font-size:11px;line-height:20px}.setup-step strong{font-size:12px;font-weight:500}.setup-step small{display:block;color:var(--muted);font-size:11px;margin:5px 0 11px}.pair{background:transparent;font-size:11px;padding:6px 12px;min-height:34px}.divider{border-top:1px solid var(--border);margin:28px 0}dl{font-size:11px}dt{margin-top:19px;color:#d7dcd6}.state-icon{color:var(--mint);margin-right:7px}dd{margin:5px 0 0 20px;color:var(--muted);font-size:11px}.boundary{margin-top:30px;border-left:2px solid #556d5d;padding:2px 0 2px 12px;font-size:11px}.boundary strong{font-weight:500}.boundary p{margin:6px 0;color:var(--muted)}#pair-result{background:var(--raised);padding:12px;border-radius:9px;font-size:11px}#pair-result input{width:100%;margin:8px 0;font-family:monospace;font-size:11px}#pair-result p{color:var(--muted)}#error{padding:10px 12px;background:#3a2522;color:#f4c3b5;border-radius:8px;font-size:12px;margin-top:10px}.entry{margin:10px 0 23px;display:flex;gap:11px}.entry .body{min-width:0;flex:1}.entry .meta{font-size:11px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}.entry .meta strong{color:var(--text);font-weight:500}.bubble{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;line-height:1.8;background:var(--panel);border:1px solid var(--border);padding:13px 16px;border-radius:0 12px 12px 12px;margin:8px 0}.entry.owner .bubble{background:#202922;border-color:#344337}.delivery{font-size:10px;color:var(--muted)}dialog{color:var(--text);background:var(--panel);border:1px solid #414a44;border-radius:18px;max-width:440px;width:calc(100% - 32px);padding:30px}dialog::backdrop{background:#080b0bbb;backdrop-filter:blur(5px)}dialog h2{font-size:21px;font-weight:500}dialog p{font-size:12px;color:var(--muted)}dialog label{display:block;font-size:12px;margin:22px 0 8px}dialog input{width:100%}dialog small{display:block;font-size:11px;color:var(--muted);margin-top:10px}dialog button{width:100%;margin-top:10px}#login-error{color:#ffb8a8}.logout{background:transparent;font-size:11px;margin-top:20px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}@media(min-width:1600px){main{padding-left:65px;padding-right:65px}.app{grid-template-columns:260px minmax(300px,1fr) 310px}}@media(max-width:1150px){.app{grid-template-columns:205px minmax(300px,1fr)}.details{grid-column:1/-1;border-left:0;border-top:1px solid var(--border);display:grid;grid-template-columns:1fr 1fr;gap:12px 28px}.details>.section-label:first-child,.details>h2,.details>p{grid-column:1/-1}.details .divider{display:none}.details dl{margin-top:0}.sidebar{grid-row:1}main{padding:25px 24px;height:100dvh}.sidebar-bottom{padding-top:20px}}@media(max-width:640px){.app{display:block}.sidebar{padding:14px 18px;border-right:0;border-bottom:1px solid var(--border)}.brand{margin:0;font-size:16px}.brand small{font-size:10px}.sidebar>.section-label,.sidebar>.room,.sidebar>.device,.sidebar-bottom{display:none}main{padding:20px 16px;height:calc(100dvh - 69px);min-height:580px}header{margin-bottom:18px}h1{font-size:23px}header p{font-size:11px}header button{padding:6px 10px}.notice{padding:10px;font-size:10px}.notice strong{font-size:11px}.compose-top>span{display:none}.details{display:block;padding:26px 22px}.empty h2{font-size:17px}.compose-bottom>span{font-size:9px}.primary{padding:8px 10px}.empty-caption{margin-top:16px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media(min-width:1151px){body{overflow:hidden}.sidebar,.details{height:100dvh;overflow-y:auto}}
#composer{position:relative}#mention-picker{position:absolute;left:14px;right:14px;bottom:100%;margin-bottom:8px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:0 12px 35px #0008;z-index:3;max-height:240px;overflow-y:auto}#mention-picker[hidden]{display:none}#mention-picker button{display:flex;width:100%;align-items:center;justify-content:space-between;gap:12px;border:0;background:transparent;text-align:left;min-height:44px}#mention-picker button[aria-selected=true]{background:#2b3931;color:var(--mint)}#mention-picker small{color:var(--muted);font-size:12px}#mention-hint{font-size:11px;color:var(--muted);padding:4px 0 8px}#mention-button{color:var(--mint);min-width:68px;background:transparent;padding:4px 8px}.mention{color:var(--mint);background:#b6ebca14;border-radius:4px;padding:1px 3px}@media(max-width:600px){.compose-bottom{gap:6px}.compose-bottom>span{font-size:9px}#mention-picker small{font-size:11px}}

@media(pointer:coarse){html,body{touch-action:pan-x pan-y}input,select,textarea{font-size:16px}}

/* Compact mobile chat; existing desktop columns keep their layout. */
.mobile-title,#mobile-settings{display:none}
#send .send-label{margin-left:0}
@media(max-width:640px){
  html,body{height:100%;overflow:hidden;background:#101113}
  .app{position:fixed;top:var(--mobile-top,0px);left:0;right:0;height:var(--mobile-height,100dvh);min-height:0;max-width:none}
  .app>.sidebar{display:none}
  main{height:100%;min-height:0;padding:0;overflow:hidden}
  main>header{height:62px;flex-shrink:0;margin:0;padding:6px 12px 6px 20px;border-bottom:1px solid #242729;background:#141617}
  header .eyebrow,header p,.desktop-title{display:none}
  header h1{font-size:17px;line-height:1.3;letter-spacing:0;margin:0;font-weight:600}
  .mobile-title{display:block}.mobile-title small{display:block;font-size:11px;font-weight:400;color:var(--muted);margin-top:3px}
  #mobile-settings{display:block;font-size:26px;letter-spacing:2px;min-width:44px;height:44px;border:0;padding:0;background:transparent}
  main>#error{margin:8px 12px 0;flex-shrink:0}
  .conversation{padding:12px 12px 6px;min-height:0;overflow-x:hidden;-webkit-overflow-scrolling:touch}
  .entry{gap:8px;margin:8px 0 20px}.entry>.avatar{width:34px;height:34px;border-radius:8px;margin-top:2px}
  .entry .body{flex:0 1 auto;max-width:calc(100% - 46px)}
  .entry .meta{gap:6px;font-size:11px;line-height:1.4}.entry .meta>span{display:none}.entry .meta time{font-size:10px}
  .bubble{font-size:16px;line-height:1.65;padding:10px 12px;margin:5px 0 4px;border:0;background:#252829;border-radius:3px 10px 10px 10px}
  .entry.owner{flex-direction:row-reverse}.entry.owner .body{display:flex;flex-direction:column;align-items:flex-end}.entry.owner .meta strong{display:none}
  .entry.owner .bubble{background:#29483a;border-radius:10px 3px 10px 10px}.delivery{font-size:10px;line-height:1.4;color:#87928c}
  #composer{display:grid;grid-template-columns:40px minmax(0,1fr) 58px;align-items:end;gap:8px;flex-shrink:0;border:0;border-top:1px solid #282c2b;border-radius:0;padding:9px 10px max(9px,env(safe-area-inset-bottom));background:#181b1c}
  #composer .compose-bottom{display:contents}#composer .compose-bottom>span{display:none}
  #message{grid-column:2;grid-row:1;height:44px;min-height:44px;max-height:128px;resize:none;background:#2a2d2e;border-radius:8px;padding:10px 11px;font-size:16px;line-height:24px;overflow-y:auto}
  #mention-button{grid-column:1;grid-row:1;min-width:40px;width:40px;height:44px;padding:0;border:0;font-size:0}#mention-button::before{content:'@';font-size:25px;line-height:1}
  #send{grid-column:3;grid-row:1;min-width:58px;height:44px;padding:6px;font-size:14px;border-radius:8px}#send .send-arrow{display:none}
  #mention-hint{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);padding:0}
  #mention-picker{left:10px;right:10px;bottom:100%;margin-bottom:5px}
  #mobile-details{position:fixed;inset:0;margin:0;width:100%;height:var(--mobile-height,100dvh);max-width:none;max-height:none;border:0;border-radius:0;padding:0;background:#141718;overflow-y:auto;overscroll-behavior:contain}
  .mobile-details-header{position:sticky;top:0;z-index:2;display:flex;align-items:center;gap:14px;padding:8px 14px;border-bottom:1px solid var(--border);background:#141718}
  .mobile-details-header h2{font-size:17px;margin:0}.mobile-details-header button{width:auto;margin:0;min-height:44px;border:0;background:transparent;color:var(--mint);padding:4px 8px}
  #mobile-details-content{padding:8px 18px max(24px,env(safe-area-inset-bottom))}
  #mobile-details .sidebar{display:flex;padding:10px 0 14px;border:0;background:transparent}#mobile-details .sidebar>.brand,#mobile-details .sidebar>.section-label,#mobile-details .room,#mobile-details .sidebar-bottom{display:none}
  #mobile-details .sidebar>.device{display:flex;padding:12px 0}#mobile-details #pause{width:100%;margin:8px 0 18px}
  #mobile-details .notice{margin:0 0 20px}#mobile-details .compose-top{display:flex;flex-wrap:wrap;padding:14px 0;border-bottom:1px solid var(--border);font-size:13px}#mobile-details .compose-top select{font-size:16px;padding:8px}
  #mobile-details .details{display:block;padding:20px 0;border:0;background:transparent}#mobile-details .details h2{margin-top:12px}#mobile-details button.pair,#mobile-details .logout{width:auto;min-height:44px;font-size:13px}
  #mobile-details button#copy-code{font-size:13px}#mobile-details .details>p{font-size:13px}#mobile-details .setup-step strong{font-size:14px}#mobile-details .setup-step small, #mobile-details dd{font-size:12px}
  #login{max-height:calc(100dvh - 24px);overflow-y:auto}
}

/* HANABI Together palette: shared window, surface, line, accent and brand tokens. */
:root{--bg:#11151c;--panel:#1d2531;--raised:#242e3c;--border:#364253;--text:#edf0f5;--muted:#aab8cc;--mint:#8aade0;--green:#7ec3a6;--brand:#fb6567}
.sidebar,.details{background:#171d26}.room{background:#29374a;border-color:#364253}.brand-mark{background:var(--brand);color:#21151a}
.avatar{background:#29374a;color:#a9c9f5}.avatar.ued{background:#333748;color:#c9c7ec}.entry.owner>.avatar{background:#422b35;color:#ffb5b8}
.entry.owner .bubble{background:#293e5a;border-color:#3e5778}.primary{color:#101928}.primary:hover{background:#a9c9f5}
.notice{background:#1d2531;border-color:#364253;color:#c4cfdf}.notice strong{color:#edf0f5}.notice-symbol{border-color:#8aade0}.mention{background:#8aade01a;color:#a9c9f5}
#mention-picker button[aria-selected=true]{background:#29374a;color:#a9c9f5}
@media(max-width:640px){
  html,body{background:var(--bg)}
  main>header{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;height:62px;padding:6px 10px;background:#171d26;border-color:#364253}
  main>header>div{grid-column:2;text-align:center}#mobile-settings{grid-column:3}
  .bubble{background:#242e3c}.entry.owner .bubble{background:#293e5a}
  #composer{background:#171d26;border-color:#364253}#message{background:#242e3c}
  #mobile-details,.mobile-details-header{background:#171d26}.mobile-details-header{border-color:#364253}
  .delivery{color:#93a3b9}
}