:root{
  --bg-app:#fff; --bg-side:#fff; --bg-chat:#dfe9f2; --bg-bubble-in:#fff; --bg-bubble-out:#e3fee0;
  --bg-hover:#f4f4f5; --bg-input:#f1f3f5; --bg-compose:#fff; --bg-panel:#fff; --bg-settings:#fff;
  --bg-pill:rgba(0,0,0,.2);
  --text:#000; --text-2:#707579; --text-bubble-out:#54a05f;
  --border:#e4e7ea;
  --blue:#3390ec; --blue-d:#2b83dd; --green:#4fae4e; --err:#e14b3a; --violet:#8e6de3;
  --shadow-ctx:0 6px 24px rgba(0,0,0,.22);
  --pattern-a:#c9d9e8; --pattern-b:#cfdfec;
  --fs:15px;
  --font:'Roboto',-apple-system,'Segoe UI','Noto Color Emoji',sans-serif;
  --side-w:340px;
  --col-w:784px;
}
html[data-theme="dark"]{
  --bg-app:#0e1621; --bg-side:#17212b; --bg-chat:#0e1621;
  --bg-bubble-in:#182533; --bg-bubble-out:#2b5278;
  --bg-hover:#202b36; --bg-input:#242f3d; --bg-compose:#17212b; --bg-panel:#17212b; --bg-settings:#17212b;
  --bg-pill:rgba(0,0,0,.45);
  --text:#fff; --text-2:#8596a8; --text-bubble-out:#7dbce0;
  --border:#101921;
  --shadow-ctx:0 6px 24px rgba(0,0,0,.55);
  --pattern-a:#14202c; --pattern-b:#192734;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;overflow:hidden}
body{font-family:var(--font);font-size:var(--fs);color:var(--text);background:var(--bg-app);overflow:hidden;transition:background .25s,color .25s}
body.resizing{user-select:none;-webkit-user-select:none;cursor:col-resize}
button{font:inherit;border:none;background:none;cursor:pointer;color:inherit}
svg{display:block}
input,textarea,select{color:inherit}
@keyframes msgIn{from{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:scale(.96) translateY(4px)}to{opacity:1;transform:none}}
@keyframes tp{0%,60%,100%{transform:none;opacity:.45}30%{transform:translateY(-4px);opacity:1}}
@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}
html.no-anim *, html.no-anim *::before, html.no-anim *::after{transition:none!important;animation:none!important}
.shake{animation:shake .3s ease}
.app{display:grid;grid-template-columns:var(--side-w) 1fr;height:100vh;height:100dvh;overflow:hidden}
.sidebar{background:var(--bg-side);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;position:relative;transition:background .25s}
.side-resizer{position:absolute;top:0;bottom:0;right:-4px;width:8px;cursor:col-resize;z-index:20;touch-action:none}
.side-resizer::after{content:'';position:absolute;top:0;bottom:0;left:3px;width:2px;background:transparent;transition:background .2s}
.side-resizer:hover::after,.side-resizer.drag::after{background:var(--blue)}
.profile{display:flex;align-items:center;gap:12px;padding:14px 12px 10px 16px;border-bottom:1px solid var(--border);flex:none}
.profile .avatar{width:46px;height:46px;font-size:16px;cursor:default}
.p-info{flex:1;min-width:0}
.p-name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.p-username{font-size:12.5px;color:var(--blue);margin-top:1px}
.p-status{font-size:12.5px;color:var(--blue)}
.dot-red{width:10px;height:10px;border-radius:50%;background:var(--err);display:inline-block;margin-left:6px;vertical-align:middle;box-shadow:0 0 6px rgba(225,75,58,.65);flex:none}
.dot-red[hidden]{display:none}
.profile-actions{display:flex;gap:4px;flex:none}
.search{margin:10px 12px 10px;position:relative;flex:none}
.search input{width:100%;background:var(--bg-input);border:1.5px solid transparent;border-radius:20px;padding:9px 16px 9px 38px;font:inherit;outline:none;transition:.2s;color:var(--text)}
.search input:focus{border-color:var(--blue);background:var(--bg-app)}
.search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);opacity:.45;color:var(--text)}
.avatar{width:50px;height:50px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:500;position:relative;user-select:none;overflow:hidden}
.avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.avatar.sm{width:42px;height:42px}
.avatar .dot{position:absolute;right:1px;bottom:1px;width:12px;height:12px;border-radius:50%;background:var(--green);border:2px solid var(--bg-side)}
.icon-btn{width:40px;height:40px;flex:none;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-2);transition:.2s}
.icon-btn:hover{color:var(--blue);background:var(--bg-hover)}
.icon-btn[disabled]{opacity:.4;pointer-events:none}
.icon-btn.danger:hover{color:var(--err);background:rgba(225,75,58,.12)}
.ctx-menu{position:fixed;z-index:80;background:var(--bg-panel);border-radius:12px;box-shadow:var(--shadow-ctx);border:1px solid var(--border);padding:5px;min-width:224px;display:none;animation:pop .14s ease}
.ctx-menu.open{display:block}
.ctx-item{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:9px 12px;border-radius:8px;transition:background .12s}
.ctx-item:hover{background:var(--bg-hover)}
.ctx-item.danger{color:var(--err)}
.ctx-item[disabled]{opacity:.45;pointer-events:none}
.ctx-ico{width:20px;text-align:center;opacity:.85;flex:none}
.ctx-sep{height:1px;background:var(--border);margin:4px 8px}
.ctx-hint{color:var(--text-2);padding:2px 12px 6px 42px;margin-top:-4px}
.attach-menu{position:fixed;z-index:81;width:220px;box-sizing:border-box;padding:5px;background:#27272a;border:1px solid color-mix(in srgb,#f5f5f5 9%,transparent);border-radius:10px;box-shadow:var(--shadow-ctx);opacity:0;transform:translateY(7px) scale(.97);transform-origin:bottom left;transition:opacity 180ms ease,transform 180ms cubic-bezier(.2,1.22,.4,1)}
.attach-menu[hidden]{display:none}.attach-menu.open{opacity:1;transform:translateY(0) scale(1)}
.attach-menu-highlight{position:absolute;z-index:0;left:5px;right:5px;top:0;height:var(--glide-height,42px);border-radius:8px;background:#3f3f46;opacity:0;transform:translateY(var(--glide-y,5px));transition:transform 220ms cubic-bezier(.2,.9,.25,1),height 220ms cubic-bezier(.2,.9,.25,1),opacity 120ms ease;pointer-events:none}
.attach-menu-highlight.ready{opacity:1}
.attach-menu-choice{position:relative;z-index:1;width:100%;min-height:42px;display:grid;grid-template-columns:26px minmax(0,1fr) auto;align-items:center;gap:7px;padding:8px;border-radius:8px;text-align:left;color:#f5f5f5;font-size:14px;transition:color 120ms ease}
.attach-menu-choice:hover,.attach-menu-choice:focus-visible{outline:none;color:#fff}.attach-menu-icon{width:20px;height:20px;line-height:1;display:flex;align-items:center;justify-content:center}.attach-menu-icon svg{width:19px;height:19px}.attach-menu-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}.attach-menu-tag{font-size:11px;color:#b6b6bd;white-space:nowrap}.attach-menu-choice.active .attach-menu-tag{color:#e4e4e8}
#attachBtn .attach-icon-svg{transition:transform 220ms cubic-bezier(.2,1.2,.4,1)}#attachBtn.open .attach-icon-svg{transform:rotate(-18deg) scale(1.08)}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:90;display:flex;align-items:center;justify-content:center;padding:clamp(16px,4vh,44px);animation:fadeIn .18s ease}
.modal-overlay[hidden]{display:none}
.modal-card{width:min(440px,100%);max-height:100%;background:var(--bg-panel);border-radius:16px;box-shadow:0 12px 44px rgba(0,0,0,.35);padding:18px;overflow-y:auto;overscroll-behavior:contain;animation:msgIn .22s ease}
.modal-head{display:flex;align-items:center;justify-content:space-between;font-weight:600;margin-bottom:10px}
.modal-close{color:var(--text-2);padding:6px;border-radius:50%;transition:background .15s}
.modal-close:hover{background:var(--bg-hover)}
.admin-badge-head{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--err);border:1px solid color-mix(in srgb, var(--err) 45%, transparent);border-radius:8px;padding:2px 8px;margin-left:8px}
@media(max-width:760px){
  .app{grid-template-columns:1fr}
  .main{display:none}
  .app.chat-open .sidebar{display:none}
  .app.chat-open .main{display:flex}
  .side-resizer{display:none}
}
@media(max-width:480px){
  .profile{padding:10px 8px 8px 12px}
  .ctx-menu{min-width:200px}
  .attach-menu{width:208px}
}
@media(max-height:520px){
  .profile{padding:8px 8px 6px 12px}
}
@media (prefers-reduced-motion: reduce){ *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important} }