:root{color-scheme:light;--bg:#f5f6f8;--surface:#fff;--surface-2:#f9fafb;--text:#16181d;--muted:#747b88;--line:#e3e6eb;--red:#e11c2a;--red-soft:#fff0f1;--cyan:#83dbea;--green:#17a566;--shadow:0 18px 50px rgba(25,30,40,.12);--radius:16px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
:root[data-theme=dark]{color-scheme:dark;--bg:#0d0f12;--surface:#15181d;--surface-2:#1b1f25;--text:#f5f6f8;--muted:#9299a5;--line:#2a2f38;--red-soft:#32151a;--shadow:0 18px 50px rgba(0,0,0,.35)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:14px}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid color-mix(in srgb,var(--red) 28%,transparent);outline-offset:2px}[hidden]{display:none!important}
.brand{font-weight:800;font-size:20px;letter-spacing:-.5px;white-space:nowrap}.brand span{color:var(--red)}.brand-large{font-size:34px}.eyebrow{margin:0 0 6px;color:var(--muted);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.09em}h1,h2,h3,p{margin-top:0}h1{font-size:30px;letter-spacing:-.7px}h2{margin-bottom:4px;letter-spacing:-.4px}small{color:var(--muted)}
.login-shell{min-height:100dvh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 75% 15%,rgba(131,219,234,.28),transparent 24%),radial-gradient(circle at 18% 80%,rgba(225,28,42,.12),transparent 25%),var(--bg)}.login-card{width:min(430px,100%);padding:42px;background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.login-card h1{margin:28px 0 20px}.security-note{margin:22px 0 0;color:var(--muted);font-size:12px;text-align:center}
.stack,.dialog-card{display:grid;gap:16px}label{display:grid;gap:7px;font-weight:650}input,textarea,select{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 13px;background:var(--surface);transition:border .2s}input:focus,textarea:focus,select:focus{border-color:var(--red)}textarea{resize:none}.primary,.secondary,.danger{border:0;border-radius:11px;padding:11px 16px;font-weight:750}.primary{background:var(--red);color:#fff;box-shadow:0 8px 20px rgba(225,28,42,.2)}.secondary{background:var(--surface-2);border:1px solid var(--line)}.danger{background:var(--red-soft);color:var(--red)}.form-error{min-height:18px;margin:0;color:var(--red);font-size:13px}.muted{color:var(--muted)}.warning{padding:12px;border-radius:10px;background:#fff7dd;color:#755a00;font-size:12px}:root[data-theme=dark] .warning{background:#332b12;color:#f2d876}
.app-shell{min-height:100dvh;display:grid;grid-template-columns:190px 1fr}.side-nav{position:sticky;top:0;height:100dvh;padding:26px 14px 18px;background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;gap:36px}.side-nav>.brand{padding:0 12px}.side-nav nav{display:grid;gap:8px}.nav-item{position:relative;display:grid;grid-template-columns:26px 1fr auto;align-items:center;gap:9px;width:100%;border:0;border-radius:12px;padding:13px 12px;background:transparent;text-align:left}.nav-item i{font-style:normal;font-size:18px}.nav-item.active{background:var(--red-soft);color:var(--red);font-weight:750}.nav-item b,#navUnread{display:grid;place-items:center;min-width:22px;height:22px;border-radius:999px;background:var(--red);color:#fff;font-size:11px}.side-footer{margin-top:auto;display:grid;gap:10px}.theme-button,.account-card{border:0;background:transparent;border-radius:12px;padding:10px;text-align:left}.theme-button{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:12px}.account-card{display:flex;align-items:center;gap:10px;background:var(--surface-2)}.account-card strong,.account-card small{display:block;max-width:105px;overflow:hidden;text-overflow:ellipsis}.avatar,.group-avatar{display:grid;place-items:center;flex:none;border-radius:50%;background:linear-gradient(145deg,var(--red),#8e0f1a);color:#fff;font-weight:800}.avatar{width:36px;height:36px}.group-avatar{width:44px;height:44px}
.view{min-width:0;min-height:100dvh}.chat-view{display:grid;grid-template-columns:390px minmax(0,1fr)}.chat-list-panel{background:var(--surface);border-right:1px solid var(--line);padding:24px 18px;min-width:0}.panel-header,.content-header,.conversation-header,.dialog-card header,.dialog-card footer,.security-title{display:flex;align-items:center;gap:14px}.panel-header,.content-header{justify-content:space-between}.panel-header h2,.content-header h1{margin:0}.icon-button{border:0;border-radius:50%;width:42px;height:42px;font-size:24px}.icon-button.red{background:var(--red);color:#fff}.search{position:relative;margin:20px 0 14px}.search span{position:absolute;left:13px;top:9px;font-size:22px;color:var(--muted)}.search input{padding-left:40px;background:var(--surface-2)}.group-list{display:grid;gap:4px}.group-row{width:100%;display:grid;grid-template-columns:44px 1fr auto;gap:11px;align-items:center;padding:12px;border:0;border-radius:13px;background:transparent;text-align:left}.group-row:hover,.group-row.active{background:var(--red-soft)}.group-row.active{box-shadow:inset 3px 0 var(--red)}.group-row strong,.group-row small{display:block}.group-row small{margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.group-row time{color:var(--muted);font-size:11px}.mini-avatar{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--cyan);color:#102127;font-weight:800}.empty-list{padding:30px 12px;text-align:center;color:var(--muted)}
.conversation-panel{position:relative;min-width:0}.empty-state{height:100dvh;display:grid;place-content:center;text-align:center;color:var(--muted)}.empty-state h2{color:var(--text)}.empty-mark{width:74px;height:74px;margin:0 auto 18px;display:grid;place-items:center;border-radius:22px;background:var(--red);color:#fff;font-size:38px;font-weight:900;transform:rotate(-5deg)}.conversation{height:100dvh;display:grid;grid-template-rows:auto auto 1fr auto auto;background:var(--bg)}.conversation-header{padding:16px 22px;background:var(--surface);border-bottom:1px solid var(--line)}.conversation-header h2,.conversation-header p{margin:0}.conversation-header p{color:var(--muted);font-size:12px}.header-actions{margin-left:auto}.crm-chip{padding:4px 9px;border-radius:7px;background:var(--cyan);color:#102127;font-size:12px;font-weight:750}.pinned-bar{display:flex;gap:12px;align-items:center;width:100%;padding:11px 22px;border:0;border-bottom:1px solid var(--line);background:var(--surface);text-align:left;color:var(--red)}.pinned-bar strong,.pinned-bar small{display:block}.pinned-bar small{margin-top:2px;max-width:65vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-list{overflow:auto;padding:22px clamp(18px,4vw,60px);display:flex;flex-direction:column;gap:12px}.message{max-width:min(700px,76%);display:grid;grid-template-columns:36px 1fr;gap:10px;align-self:flex-start}.message.own{grid-template-columns:1fr;align-self:flex-end}.message-avatar{width:36px;height:36px;display:grid;place-items:center;border-radius:50%;background:#222;color:#fff;font-size:11px;font-weight:800}.bubble{position:relative;padding:11px 13px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:0 3px 12px rgba(30,35,45,.04)}.own .bubble{background:var(--red-soft);border-color:color-mix(in srgb,var(--red) 25%,var(--line))}.message-head{display:flex;align-items:center;gap:10px;margin-bottom:5px}.message-head strong{color:var(--red)}.message-head time{margin-left:auto;color:var(--muted);font-size:10px}.message-body{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.45}.message-body .mention{color:var(--red);font-weight:800}.message-actions{display:flex;gap:8px;margin-top:8px;opacity:.68}.message-actions button{border:0;background:transparent;color:var(--muted);font-size:11px}.reply-quote{border-left:3px solid var(--red);padding:5px 8px;margin-bottom:8px;background:var(--surface-2);border-radius:4px;font-size:12px}.attachment{display:block;margin-top:9px;border:1px solid var(--line);border-radius:11px;padding:10px;text-decoration:none;color:inherit;background:var(--surface-2)}.attachment img{display:block;max-width:100%;max-height:330px;border-radius:8px}.file-card{display:flex;gap:10px;align-items:center}.file-icon{display:grid;place-items:center;width:38px;height:42px;border-radius:8px;background:var(--red);color:#fff;font-size:10px;font-weight:800}.reply-bar,.upload-preview{margin:0 18px;padding:9px 13px;background:var(--surface);border:1px solid var(--line);border-bottom:0}.reply-bar{display:flex;align-items:center;justify-content:space-between}.reply-bar small,.reply-bar b{display:block}.reply-bar button{border:0;background:transparent;font-size:22px}.upload-preview{color:var(--muted)}.composer{display:grid;grid-template-columns:auto 1fr auto;align-items:end;gap:8px;margin:0 18px 16px;padding:8px;border:1px solid var(--line);border-radius:15px;background:var(--surface)}.composer textarea{border:0;padding:9px 6px;background:transparent;max-height:140px}.attach-button,.send-button{display:grid;place-items:center;width:42px;height:42px;border-radius:11px}.attach-button{background:var(--surface-2);font-size:22px}.send-button{border:0;background:var(--red);color:#fff;font-size:20px}
.content-view{padding:34px;max-width:1500px;margin:auto}.content-header{margin-bottom:24px}.content-header h1{font-size:30px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:16px}.stat-card,.surface{border:1px solid var(--line);background:var(--surface);border-radius:var(--radius)}.stat-card{padding:20px}.stat-card strong{display:block;font-size:28px;margin-top:7px}.colleagues-layout{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:16px}.people-list{overflow:auto}.person-row{display:grid;grid-template-columns:minmax(180px,1.4fr) 110px 110px auto;gap:14px;align-items:center;padding:14px 18px;border-bottom:1px solid var(--line)}.person-row:last-child{border-bottom:0}.person-main{display:flex;align-items:center;gap:10px}.role-badge{padding:5px 8px;border-radius:7px;background:var(--surface-2);font-size:11px}.role-badge.admin{background:var(--red-soft);color:var(--red)}.status-dot{color:var(--green)}.person-actions{display:flex;gap:6px}.person-actions button{border:1px solid var(--line);background:var(--surface-2);border-radius:8px;padding:6px 8px;font-size:11px}.security-panel{padding:20px;align-self:start}.security-title{align-items:flex-start}.security-title h3,.security-title p{margin:0}.security-title p{margin-top:4px;color:var(--muted);font-size:11px}.shield{color:var(--red);font-size:24px}.switch{margin-left:auto;position:relative}.switch input{position:absolute;opacity:0}.switch span{display:block;width:42px;height:24px;border-radius:99px;background:#bec3cc;transition:.2s}.switch span:after{content:"";display:block;width:18px;height:18px;margin:3px;border-radius:50%;background:#fff;transition:.2s}.switch input:checked+span{background:var(--red)}.switch input:checked+span:after{transform:translateX(18px)}.inline-form{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0}.inline-form button{grid-column:1/-1}.ip-rules{display:grid;gap:8px}.ip-rule{display:grid;grid-template-columns:1fr auto;gap:8px;padding:10px;background:var(--surface-2);border-radius:10px}.ip-rule button{border:0;background:transparent;color:var(--red)}code{padding:3px 6px;border-radius:6px;background:var(--surface-2)}.notification-list{display:grid}.notification-row{display:grid;grid-template-columns:42px 1fr auto;gap:12px;padding:16px;border-bottom:1px solid var(--line)}.notification-row.unread{background:var(--red-soft)}.notification-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--red);color:#fff}.notification-row p{margin:4px 0 0;color:var(--muted)}
dialog{width:min(560px,calc(100% - 32px));padding:0;border:0;border-radius:20px;background:var(--surface);color:var(--text);box-shadow:var(--shadow)}dialog::backdrop{background:rgba(4,7,12,.62);backdrop-filter:blur(4px)}.dialog-card{padding:24px}.dialog-card header,.dialog-card footer{justify-content:space-between}.dialog-card header h2{margin:0}.dialog-close{border:0;background:transparent;font-size:24px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}fieldset{border:1px solid var(--line);border-radius:12px}legend{font-weight:750}.choice-list{display:grid;gap:4px;max-height:280px;overflow:auto}.choice-item{display:flex;align-items:center;gap:10px;padding:9px;border-radius:9px}.choice-item:hover{background:var(--surface-2)}.choice-item input{width:auto}.compact{gap:10px}.toast{position:fixed;right:22px;bottom:22px;z-index:20;padding:12px 16px;border-radius:11px;background:#17191d;color:#fff;box-shadow:var(--shadow)}
@media(max-width:1050px){.app-shell{grid-template-columns:78px 1fr}.side-nav{padding-inline:10px}.side-nav>.brand{font-size:0}.side-nav>.brand span{font-size:22px}.nav-item{grid-template-columns:1fr;text-align:center}.nav-item i{font-size:20px}.nav-item span,.theme-button span:last-child,.account-card>span:last-child{display:none}.nav-item b{position:absolute;right:5px;top:4px}.account-card{justify-content:center}.chat-view{grid-template-columns:330px 1fr}.colleagues-layout{grid-template-columns:1fr}.security-panel{order:-1}}
@media(max-width:720px){.app-shell{display:block;padding-bottom:68px}.side-nav{position:fixed;z-index:10;top:auto;bottom:0;width:100%;height:68px;padding:6px 10px;display:grid;grid-template-columns:repeat(4,1fr);border:0;border-top:1px solid var(--line)}.side-nav>.brand,.account-card{display:none}.side-nav nav{display:contents}.nav-item{display:flex;flex-direction:column;gap:2px;justify-content:center;padding:5px;font-size:10px}.nav-item span{display:block}.nav-item i{font-size:17px}.theme-button{justify-content:center;margin:0;padding:5px}.theme-button span:first-child{font-size:20px}.side-footer{display:contents}.chat-view{grid-template-columns:1fr}.chat-list-panel{border:0;min-height:calc(100dvh - 68px)}.conversation-panel{position:fixed;z-index:8;inset:0 0 68px 0;background:var(--bg);transform:translateX(100%);transition:transform .22s}.conversation-panel.mobile-open{transform:none}.conversation-header{padding:10px 12px}.conversation-header:before{content:"‹";font-size:32px;cursor:pointer}.conversation-header .secondary{font-size:0;padding:9px}.conversation-header .secondary:after{content:"＋";font-size:18px}.crm-chip{display:none}.message-list{padding:14px 10px}.message{max-width:90%}.composer{margin:0 8px 8px}.content-view{padding:20px 12px}.stats{grid-template-columns:repeat(3,1fr);gap:7px}.stat-card{padding:12px}.stat-card strong{font-size:22px}.person-row{grid-template-columns:1fr auto}.person-row>:nth-child(2),.person-row>:nth-child(3){display:none}.content-header{align-items:flex-start}.content-header .primary{font-size:0;padding:11px}.content-header .primary:after{content:"＋";font-size:20px}.form-grid,.inline-form{grid-template-columns:1fr}.login-card{padding:28px}.brand-large{font-size:30px}}

/* v1.1: avatars, composer tools and resilient responsive chat layout */
.avatar img,.group-avatar img,.mini-avatar img,.message-avatar img,.mention-avatar img{width:100%;height:100%;display:block;object-fit:cover;border-radius:inherit}
.avatar-button{border:0;padding:0;overflow:hidden}.avatar-button:disabled{cursor:default;opacity:1}
.mobile-back{display:none;border:0;background:transparent;color:var(--text);font-size:32px;line-height:1;padding:0 4px}
.conversation{min-height:0;grid-template-rows:auto auto minmax(0,1fr) auto auto}.message-list{min-height:0}
.composer{position:relative;grid-template-columns:auto minmax(0,1fr) auto;width:auto;min-width:0}.composer textarea{min-width:0;width:100%}
.composer-tools{display:flex;align-items:center;gap:4px}.composer-tool{display:grid;place-items:center;width:38px;height:38px;padding:0;border:0;border-radius:10px;background:var(--surface-2);color:var(--text);font-size:20px;font-weight:750}.composer-tool input{display:none}.gif-tool{font-size:11px;letter-spacing:.02em}
.emoji-picker,.mention-picker{position:absolute;z-index:12;left:8px;bottom:58px;padding:8px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}
.emoji-picker{display:grid;grid-template-columns:repeat(5,38px);gap:4px}.emoji-picker button{width:38px;height:38px;border:0;border-radius:9px;background:transparent;font-size:22px}.emoji-picker button:hover{background:var(--surface-2)}
.mention-picker{display:grid;width:min(330px,calc(100vw - 40px));gap:3px}.mention-picker button{display:flex;align-items:center;gap:9px;width:100%;padding:8px;border:0;border-radius:9px;background:transparent;text-align:left}.mention-picker button:hover{background:var(--surface-2)}.mention-picker strong,.mention-picker small{display:block}.mention-avatar{width:32px;height:32px;display:grid;place-items:center;flex:none;border-radius:50%;overflow:hidden;background:var(--red);color:#fff;font-size:10px;font-weight:800}
.audio-card audio{display:block;width:min(420px,100%);max-width:100%}.audio-card small{display:block;margin-top:7px}
.header-button-group{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.profile-avatar-action{display:block;text-align:center;cursor:pointer}
.person-actions{justify-content:flex-end;flex-wrap:wrap}.group-avatar{overflow:hidden}
.status-dot.online{color:var(--green)}.status-dot.offline{color:var(--muted)}
.app-shell,.chat-view{transition:grid-template-columns .22s ease}.side-nav,.chat-list-panel{transition:padding .22s ease,opacity .18s ease}
.app-shell.focus-chat{grid-template-columns:0 minmax(0,1fr)}.app-shell.focus-chat>.side-nav{padding-inline:0;border:0;opacity:0;overflow:hidden;pointer-events:none}
.chat-view.chat-list-collapsed{grid-template-columns:0 minmax(0,1fr)}.chat-view.chat-list-collapsed>.chat-list-panel{padding-inline:0;border:0;opacity:0;overflow:hidden;pointer-events:none}
.collapse-chat-button{white-space:nowrap}.header-actions{display:flex;align-items:center;gap:8px}
.delete-message-action{color:var(--red)!important}.delete-group-button{white-space:nowrap}

@media(max-width:720px){
  .app-shell{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .side-nav{height:calc(64px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom)}
  .conversation-panel{inset:0 0 calc(64px + env(safe-area-inset-bottom)) 0;min-height:0}
  .conversation{height:100%;min-height:0}
  .conversation-header{min-width:0;gap:8px}.conversation-header:before{content:none}.mobile-back{display:block}.conversation-header>div{min-width:0}.conversation-header h2{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:45vw}.group-avatar{width:38px;height:38px}
  .collapse-chat-button{display:none}
  .delete-group-button{font-size:0;padding:9px}.delete-group-button:after{content:"🗑";font-size:16px}
  .message-list{min-height:0;padding:12px 8px}.message{max-width:94%}.message-avatar{width:30px;height:30px}.message{grid-template-columns:30px minmax(0,1fr)}
  .reply-bar,.upload-preview{margin-inline:8px}.composer{grid-template-columns:minmax(0,1fr) auto;margin:0 6px 6px;padding:6px;gap:5px}.composer-tools{grid-column:1/-1;order:-1}.composer-tool{width:34px;height:32px}.composer textarea{min-height:42px;max-height:110px}.send-button{width:42px;height:42px}
  .emoji-picker,.mention-picker{bottom:94px;left:4px}.emoji-picker{grid-template-columns:repeat(5,36px)}
  .header-button-group{width:100%;justify-content:flex-start}.content-header{flex-wrap:wrap}.header-button-group .secondary{font-size:12px;padding:9px}
  .person-row{gap:8px}.person-actions{grid-column:1/-1;justify-content:flex-start}.person-actions button{flex:1}
}

@media(max-width:390px){.conversation-header .group-avatar{display:none}.conversation-header h2{max-width:48vw}.stats{grid-template-columns:1fr}.emoji-picker{grid-template-columns:repeat(5,34px)}}