*{margin:0;padding:0;box-sizing:border-box}
:root{--bg-primary:#1a1d23;--bg-secondary:#22252b;--bg-tertiary:#2b2e35;--bg-hover:#32353c;--text-primary:#e8eaed;--text-secondary:#9aa0a6;--text-muted:#5f6368;--accent:#7c4dff;--accent-hover:#651fff;--accent-light:#7c4dff26;--border:#ffffff0f;--msg-sent:#3390ec;--msg-sent-light:#8774e1;--msg-recv:#2b2e35;--danger:#ef5350;--success:#66bb6a;--radius:12px;--safe-bottom:env(safe-area-inset-bottom,0px)}
@media(prefers-color-scheme:light){:root{--bg-primary:#ffffff;--bg-secondary:#f5f5f5;--bg-tertiary:#e8e8e8;--bg-hover:#ddd;--text-primary:#1a1a1a;--text-secondary:#666;--text-muted:#999;--border:#00000012;--msg-recv:#e8e8e8}}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,sans-serif;background:var(--bg-primary);color:var(--text-primary);overflow:hidden;-webkit-tap-highlight-color:transparent}
input,textarea,button{font-family:inherit;font-size:inherit;outline:none;border:none;background:none;color:inherit}
input:-webkit-autofill,input:-webkit-autofill:hover,input:-webkit-autofill:focus{-webkit-box-shadow:0 0 0 30px var(--bg-tertiary) inset!important;-webkit-text-fill-color:var(--text-primary)!important;caret-color:var(--text-primary);border-radius:8px}
a{color:var(--accent);text-decoration:none}
img{max-width:100%;display:block}
::-webkit-scrollbar{width:4px;height:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:4px}

/* Layout */
#app{height:100%;display:flex}
.sidebar{width:360px;min-width:360px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;height:100%;position:relative;z-index:1}
.sidebar-header{height:60px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);flex-shrink:0}
.sidebar-header h1{font-size:18px;font-weight:700}
.sidebar-actions{display:flex;gap:2px}
.icon-btn{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-secondary);transition:all .15s;flex-shrink:0}
.icon-btn:hover{background:var(--bg-hover);color:var(--text-primary)}
.search-box{margin:10px 12px;padding:0 12px;height:40px;border-radius:var(--radius);background:var(--bg-tertiary);display:flex;align-items:center;gap:8px;border:1px solid transparent;transition:border .15s;position:relative}
.search-box:focus-within{border-color:var(--accent)}
.search-box input{flex:1;height:100%;font-size:14px;background:none;color:var(--text-primary)}
.search-box input::placeholder{color:var(--text-muted)}
.chat-list{flex:1;overflow-y:auto;padding:4px 0}
.chat-item{display:flex;align-items:center;gap:12px;padding:10px 14px;cursor:pointer;transition:background .15s;margin:0 6px;border-radius:var(--radius)}
.chat-item:hover{background:var(--bg-hover)}
.chat-item.active{background:var(--accent-light)}
.chat-avatar{width:44px;height:44px;border-radius:50%;background:var(--accent-light);display:flex;align-items:center;justify-content:center;font-weight:600;color:var(--accent);flex-shrink:0;position:relative;font-size:15px}
.online-dot{width:10px;height:10px;border-radius:50%;background:var(--success);border:2px solid var(--bg-secondary);position:absolute;bottom:-1px;right:-1px}
.chat-info{flex:1;min-width:0}
.chat-name{font-size:14px;font-weight:600;display:flex;align-items:center;gap:6px;color:var(--text-primary)}
.chat-preview{font-size:13px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:1px}
.chat-meta{text-align:right;flex-shrink:0}
.chat-time{font-size:11px;color:var(--text-muted)}
.chat-unread{background:var(--accent);color:#fff;font-size:11px;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 5px;margin-top:3px}
.fav-avatar svg{width:18px;height:18px;display:block}
.fav-banner{display:flex;align-items:center;gap:12px;padding:14px 18px;margin:12px 16px;border-radius:14px;background:rgba(255,215,0,0.08);border:1px solid rgba(255,215,0,0.15)}

/* Main */
.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg-primary);position:relative}
.empty-main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);gap:12px;text-align:center;padding:40px}
.empty-main .icon{font-size:48px;opacity:.3}
.empty-main h3{font-size:16px;color:var(--text-secondary);font-weight:600}
.empty-main p{font-size:13px;max-width:260px}

/* Chat header */
.chat-header{height:60px;padding:0 12px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border);flex-shrink:0}
.back-btn{width:36px;height:36px;border-radius:8px;display:none;align-items:center;justify-content:center;cursor:pointer;color:var(--text-secondary)}
.back-btn:hover{background:var(--bg-hover)}
.chat-header .chat-info{flex:1;min-width:0;cursor:pointer}
.chat-header .chat-info:hover .chat-name{color:var(--accent)}
.chat-name-lg{font-size:15px;font-weight:600}
.chat-status{font-size:12px;color:var(--text-muted)}
.chat-actions{display:flex;gap:2px}

/* Messages - Telegram style */
.messages{flex:1;overflow-y:auto;padding:8px 14px 4px;display:flex;flex-direction:column}
.messages .empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);gap:8px;font-size:13px;text-align:center}
.msg-wrap{display:flex;flex-direction:column;margin-bottom:2px;position:relative;animation:fadeIn .15s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}
.msg{max-width:75%;padding:6px 10px 6px 12px;font-size:14px;line-height:1.45;position:relative;word-wrap:break-word;white-space:pre-wrap;border-radius:16px;color:var(--text-primary)}
.msg.sent{background:var(--msg-sent);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.msg.recv{background:var(--msg-recv);align-self:flex-start;border-bottom-left-radius:4px}
.msg.sender{font-size:11px;font-weight:600;color:var(--accent);margin-bottom:1px;display:block}
.msg .img-wrap{border-radius:12px;overflow:hidden;max-height:260px;cursor:pointer;margin:2px -2px 2px}
.msg .img-wrap img{width:100%;height:auto;max-height:260px;object-fit:cover;display:block;border-radius:12px}
.msg .reply-preview{background:rgba(255,255,255,.06);border-radius:8px;padding:5px 8px 5px 6px;margin:2px 0 4px;font-size:12px;border-left:3px solid rgba(255,255,255,.4);cursor:pointer;line-height:1.3}
.msg.sent .reply-preview{border-left-color:rgba(255,255,255,.4)}
.msg.recv .reply-preview{border-left-color:var(--accent)}
.msg .reply-preview .rname{font-weight:700;font-size:11px;display:block;margin-bottom:1px}
.msg.sent .reply-preview .rname{color:rgba(255,255,255,.7)}
.msg.recv .reply-preview .rname{color:var(--accent)}
.msg .reply-preview .rtext{color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;word-break:break-all}
.msg .forward-badge{font-size:10px;color:rgba(255,255,255,.5);margin-bottom:1px;display:block}
.msg .msg-bottom{display:flex;align-items:center;justify-content:flex-end;gap:3px;margin-top:2px;height:16px}
.msg .time{font-size:10px;color:rgba(255,255,255,.5);flex-shrink:0;line-height:1}
.msg.recv .time{color:var(--text-muted)}
.msg .edited{font-size:10px;margin-right:1px;opacity:.7}
.msg .check{flex-shrink:0;width:14px;height:14px;display:flex;align-items:center;justify-content:center;margin-left:1px}
.msg .check svg{width:12px;height:12px;display:block}
.msg .check.sent{color:rgba(255,255,255,.4)}
.msg .check.delivered{color:rgba(255,255,255,.4)}
.msg .check.read{color:#53bdeb}
/* Reactions below message */
.msg-reactions{display:flex;align-items:center;gap:2px;flex-wrap:wrap;margin-top:2px;padding-left:4px}
.msg-reactions .rbadge{display:inline-flex;align-items:center;gap:2px;padding:1px 5px 1px 4px;border-radius:10px;font-size:12px;background:var(--bg-tertiary);border:1px solid var(--border);cursor:pointer;transition:all .15s;user-select:none;line-height:1.3}
.msg-reactions .rbadge:hover{background:var(--bg-hover)}
.msg-reactions .rbadge.me{border-color:var(--accent);background:rgba(124,58,237,.12)}
.msg-reactions .rbadge .rcnt{font-size:9px;color:var(--text-secondary);font-weight:600;margin-left:1px}
.msg-reactions .rbadge.me .rcnt{color:var(--accent)}
.msg-reactions .rplus{width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);background:var(--bg-tertiary);border:1px solid var(--border);font-size:12px;line-height:1;transition:all .15s;flex-shrink:0}
.msg-reactions .rplus:hover{background:var(--bg-hover);color:var(--text-primary)}
@keyframes reactPop{0%{transform:scale(0.3);opacity:0}50%{transform:scale(1.2)}100%{transform:scale(1);opacity:1}}
.msg-reactions .rbadge.new{animation:reactPop .3s cubic-bezier(.34,1.56,.64,1) both}
@keyframes scatter{0%{transform:scale(0) rotate(0deg);opacity:1}50%{opacity:1}100%{transform:scale(1.5) translate(var(--dx),var(--dy)) rotate(360deg);opacity:0}}
.r-emitter{pointer-events:none;position:fixed;z-index:9999}
.r-emitter span{position:absolute;font-size:24px;animation:scatter .6s ease-out forwards;animation-delay:var(--d,0s)}
/* Hover actions */
.msg-actions{display:none;position:absolute;top:-28px;right:0;background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;padding:3px;gap:2px;box-shadow:0 4px 16px rgba(0,0,0,.4);z-index:5}
.msg-wrap:hover .msg-actions,.msg-actions.show{display:flex}
.msg-actions .act{width:30px;height:30px;border-radius:6px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-secondary);font-size:13px;transition:all .15s}
.msg-actions .act:hover{background:var(--bg-hover);color:var(--text-primary)}
.msg-actions .act.danger:hover{color:var(--danger)}
@media(hover:none){
  .msg-actions{display:none!important}
  .msg-actions.show{display:flex!important}
  .chat-item .ctx-trigger{display:none}
}
.rpicker{display:none;position:fixed;background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:6px;z-index:999;box-shadow:0 4px 20px rgba(0,0,0,.4);gap:2px}
.rpicker.show{display:flex}
.rpicker span{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:8px;cursor:pointer;font-size:20px;transition:background .15s}
.rpicker span:hover{background:var(--bg-hover)}

/* Typing */
.typing{padding:2px 16px 6px;font-size:12px;color:var(--text-muted);display:none;align-items:center;gap:4px}
.typing.show{display:flex}
.typing .dots{display:flex;gap:3px}
.typing .dots span{width:5px;height:5px;border-radius:50%;background:var(--text-muted);animation:dot 1.4s infinite}
.typing .dots span:nth-child(2){animation-delay:.2s}
.typing .dots span:nth-child(3){animation-delay:.4s}
@keyframes dot{0%,60%,100%{opacity:.3}30%{opacity:1}}

/* Input */
.input-wrap{padding:8px 12px;padding-bottom:calc(8px + var(--safe-bottom));border-top:1px solid var(--border);flex-shrink:0}
.input-bar{display:flex;align-items:flex-end;gap:8px;background:var(--bg-tertiary);border-radius:18px;padding:4px 4px 4px 14px;border:1px solid var(--border);transition:border .15s}
.input-bar:focus-within{border-color:var(--accent)}
.input-bar textarea{flex:1;resize:none;max-height:100px;padding:7px 0;font-size:14px;line-height:1.4;background:none;color:var(--text-primary)}
.input-bar textarea::placeholder{color:var(--text-muted)}
.input-btns{display:flex;align-items:center;gap:2px}
.send-btn{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s;flex-shrink:0;border:none}
.send-btn:hover{background:var(--accent-hover);transform:scale(1.05)}
.send-btn:active{transform:scale(.95)}
.send-btn:disabled{opacity:.4;transform:none;cursor:default}
.attach-btn{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);transition:all .15s}
.attach-btn:hover{background:var(--bg-hover);color:var(--text-primary)}
.img-preview{display:none;padding:0 14px 8px;align-items:center;gap:8px}
.img-preview.show{display:flex}
.img-preview img{width:44px;height:44px;border-radius:8px;object-fit:cover;border:1px solid var(--border)}
.img-preview .remove-img{width:20px;height:20px;border-radius:50%;background:var(--danger);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:10px;margin-left:auto}
.reply-bar{display:none;padding:6px 14px 0;align-items:center;gap:8px;font-size:12px;color:var(--text-secondary)}
.reply-bar.show{display:flex}
.reply-bar .rinfo{flex:1;min-width:0;background:var(--bg-tertiary);padding:6px 10px;border-radius:8px;border-left:3px solid var(--accent);overflow:hidden;line-height:1.3}
.reply-bar .rinfo .rlbl{font-size:10px;color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:.3px}
.reply-bar .rinfo .rtext{font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reply-bar .cancel-reply{width:22px;height:22px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);flex-shrink:0}

/* Auth */
.auth{position:fixed;top:0;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;padding:16px;background:radial-gradient(ellipse at 30% 20%, rgba(124,58,237,.08), transparent 60%),radial-gradient(ellipse at 70% 80%, rgba(124,58,237,.05), transparent 60%),var(--bg-primary)}
.auth-card{width:100%;max-width:380px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:20px;padding:28px 24px;box-shadow:0 8px 40px rgba(0,0,0,.3)}
.auth-card h1{font-size:22px;font-weight:800;text-align:center;margin-bottom:2px;background:linear-gradient(135deg,#e8eaed,#7c4dff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.auth-card .sub{text-align:center;color:var(--text-secondary);font-size:13px;margin-bottom:20px}
.auth-tabs{display:flex;gap:4px;background:var(--bg-tertiary);border-radius:var(--radius);padding:3px;margin-bottom:18px}
.auth-tab{flex:1;padding:8px;text-align:center;cursor:pointer;font-size:13px;font-weight:600;color:var(--text-muted);transition:all .2s;border-radius:8px;background:transparent;border:none}
.auth-tab.active{background:var(--accent);color:#fff;box-shadow:0 2px 8px rgba(124,58,237,.3)}
.fg{position:relative;margin-bottom:14px}
.fg label{display:block;font-size:11px;font-weight:600;color:var(--text-secondary);margin-bottom:5px;text-transform:uppercase;letter-spacing:.5px}
.fg .input-wrap{position:relative;display:flex;align-items:center;background:var(--bg-tertiary);border:1.5px solid var(--border);border-radius:var(--radius);transition:border .2s}
.fg .input-wrap:focus-within{border-color:var(--accent)}
.fg .input-wrap.error{border-color:var(--danger)}
.fg input{flex:1;padding:8px 12px;background:none;border:none;color:var(--text-primary);font-size:14px;outline:none;min-width:0}
.fg input::placeholder{color:var(--text-muted)}
.fg .pw-toggle{width:38px;height:38px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);flex-shrink:0;transition:color .15s;border:none;background:none;padding:0}
.fg .pw-toggle:hover{color:var(--text-primary)}
.fg .field-msg{font-size:11px;margin-top:4px;padding-left:2px;display:none}
.fg .field-msg.show{display:block}
.fg .field-msg.error{color:var(--danger)}
.auth-error{background:rgba(239,83,80,.1);border:1px solid rgba(239,83,80,.2);color:var(--danger);padding:10px 14px;border-radius:10px;font-size:13px;display:none;margin-bottom:14px}
.auth-error.show{display:block}
.btn-auth{width:100%;padding:10px;border-radius:var(--radius);background:linear-gradient(135deg,#7c4dff,#651fff);color:#fff;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s;text-align:center;border:none;position:relative}
.btn-auth:hover{opacity:.9;transform:translateY(-1px);box-shadow:0 4px 16px rgba(124,58,237,.3)}
.btn-auth:active{transform:translateY(0)}
.btn-auth:disabled{opacity:.5;cursor:default;transform:none;box-shadow:none}
.btn-auth.loading{color:transparent}
.btn-auth.loading::after{content:'';position:absolute;top:50%;left:50%;width:18px;height:18px;margin:-9px 0 0 -9px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:authSpin .6s linear}
@keyframes authSpin{to{transform:rotate(360deg)}}
.auth-err-inline{margin-top:12px;text-align:center;display:none}
.auth-err-inline.show{display:block}

@media(max-width:480px){
  .auth-card{padding:22px 18px;border-radius:16px}
  .auth-card h1{font-size:20px}
  .auth-card .sub{font-size:12px;margin-bottom:16px}
  .fg input{padding:12px 12px;font-size:15px}
  .btn-auth{padding:13px;font-size:15px}
  .auth-tab{padding:9px;font-size:14px}
}

/* Settings panel */
.overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:100;animation:fadeIn .2s}
.overlay.show{display:block}
.panel{position:fixed;top:0;right:0;width:380px;max-width:92vw;height:100%;background:var(--bg-secondary);border-left:1px solid var(--border);z-index:101;display:flex;flex-direction:column;transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1)}
.panel.show{transform:translateX(0)}
.panel-header{height:60px;padding:0 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border);flex-shrink:0}
.panel-header h2{font-size:17px;font-weight:700}
.panel-body{flex:1;overflow-y:auto;padding:16px}
.panel-section{margin-bottom:24px}
.panel-section h3{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:8px}
.panel-row{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;background:var(--bg-tertiary);border-radius:var(--radius);margin-bottom:6px;gap:8px}
.panel-row .lbl{font-size:13px;color:var(--text-secondary)}
.panel-row .val{font-size:14px;font-weight:500;text-align:right;max-width:60%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.panel-row input[type=text],.panel-row input[type=password]{text-align:right;flex:1;background:none;color:var(--text-primary);font-size:14px;font-weight:500;min-width:0}
.panel-row input::placeholder{color:var(--text-muted)}
.panel-row .logout{color:var(--danger);cursor:pointer;font-size:14px;font-weight:600;background:none;border:none;padding:0}
.panel-row .clickable{cursor:pointer;flex:1;display:flex;align-items:center;justify-content:space-between}

/* User info panel */
.user-panel{width:340px;min-width:340px;background:var(--bg-secondary);border-left:1px solid var(--border);display:flex;flex-direction:column;height:100%;overflow:hidden}
.user-panel-header{height:60px;padding:0 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border);flex-shrink:0}
.user-panel-header h2{font-size:15px;font-weight:600}
.user-panel-body{flex:1;overflow-y:auto;padding:16px}
.user-profile{text-align:center;padding:20px 0}
.user-profile .big-avatar{width:64px;height:64px;border-radius:50%;background:var(--accent-light);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;color:var(--accent);margin:0 auto 10px}
.user-profile .uname{font-size:16px;font-weight:600}
.user-profile .utag{font-size:13px;color:var(--text-muted)}
.user-tabs{display:flex;gap:6px;margin:16px 0 12px}
.user-tab{flex:1;padding:7px;text-align:center;border-radius:8px;cursor:pointer;font-size:12px;font-weight:600;color:var(--text-muted);transition:all .15s}
.user-tab:hover{background:var(--bg-hover)}
.user-tab.active{background:var(--accent-light);color:var(--accent)}
.user-content{font-size:13px;color:var(--text-secondary)}
.user-content .empty-state{text-align:center;padding:30px 10px;color:var(--text-muted)}
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}
.media-grid img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:6px;cursor:pointer}
.link-item{padding:10px 12px;background:var(--bg-tertiary);border-radius:8px;margin-bottom:6px;word-break:break-all;cursor:pointer}
.link-item:hover{background:var(--bg-hover)}

/* Search dropdown */
.search-results{position:absolute;top:100%;left:0;right:0;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);max-height:300px;overflow-y:auto;z-index:50;display:none;box-shadow:0 8px 32px rgba(0,0,0,.4);margin-top:2px}
.search-results.show{display:block}
.sr-item{display:flex;align-items:center;gap:10px;padding:10px 14px;cursor:pointer;transition:background .15s}
.sr-item:hover{background:var(--bg-hover)}

/* Toast */
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--bg-secondary);border:1px solid var(--border);padding:10px 20px;border-radius:var(--radius);font-size:13px;z-index:200;opacity:0;transition:all .3s;pointer-events:none;box-shadow:0 4px 20px rgba(0,0,0,.4)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* Fullscreen image */
.fs-img{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.9);z-index:300;align-items:center;justify-content:center;cursor:pointer}
.fs-img.show{display:flex}
.fs-img img{max-width:95%;max-height:95%;object-fit:contain;border-radius:8px}

/* Forward modal */
.modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);z-index:150;animation:fadeIn .15s}
.modal-overlay.show{display:block}
.modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;width:360px;max-width:90vw;max-height:70vh;z-index:151;display:none;flex-direction:column;box-shadow:0 8px 40px rgba(0,0,0,.5)}
.modal.show{display:flex}
.modal-header{padding:16px 16px 8px;font-size:16px;font-weight:700}
.modal-list{overflow-y:auto;padding:4px 8px 12px}
.modal-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;cursor:pointer;transition:background .15s}
.modal-item:hover{background:var(--bg-hover)}
.modal-item .mavatar{width:36px;height:36px;border-radius:50%;background:var(--accent-light);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;color:var(--accent);flex-shrink:0}
.modal-cancel{padding:8px 16px 12px;text-align:center;border-top:1px solid var(--border)}
.modal-cancel span{cursor:pointer;color:var(--text-muted);font-size:13px;font-weight:600}

/* Context menu */
.ctx-menu{position:fixed;background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;padding:4px;z-index:160;display:none;min-width:160px;box-shadow:0 4px 20px rgba(0,0,0,.4)}
.ctx-menu.show{display:block}
.ctx-item{padding:8px 12px;border-radius:6px;cursor:pointer;font-size:13px;color:var(--text-primary);transition:background .15s;display:flex;align-items:center;gap:8px}
.ctx-item:hover{background:var(--bg-hover)}
.ctx-item.danger{color:var(--danger)}
.ctx-item .ctx-icon{width:16px;text-align:center;color:var(--text-muted);font-size:14px}

/* Loading spinner */
.spinner{width:24px;height:24px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear;margin:20px auto}
.loading-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:var(--bg-primary);display:flex;align-items:center;justify-content:center;z-index:10}
.loading-overlay.hide{display:none}

/* Confirm / Prompt dialog */
.confirm-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);z-index:200;animation:fadeIn .15s}
.confirm-overlay.show{display:block}
.confirm-dialog{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;width:280px;max-width:85vw;z-index:201;display:none;flex-direction:column;box-shadow:0 8px 40px rgba(0,0,0,.5);padding:24px 20px 16px}
.confirm-dialog.show{display:flex}
.confirm-title{padding:0 0 6px;font-size:15px;font-weight:600;text-align:center;line-height:1.4;color:var(--text-primary)}
.confirm-body{padding:0 0 20px;font-size:13px;color:var(--text-muted);text-align:center;line-height:1.4}
.confirm-actions{display:flex;gap:8px}
.confirm-btn{flex:1;padding:10px;text-align:center;font-size:14px;font-weight:600;cursor:pointer;border-radius:10px;transition:all .15s;border:none;background:none}
.confirm-btn:hover{opacity:.8}
.confirm-btn.primary{background:var(--accent);color:#fff}
.confirm-btn.primary:hover{background:var(--accent-hover)}
.confirm-btn.cancel{background:var(--bg-tertiary);color:var(--text-secondary)}
.confirm-btn.cancel:hover{background:var(--bg-hover)}

/* Prompt dialog */
.prompt-input{padding:8px 14px;margin:0 20px 16px;border-radius:8px;background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-primary);font-size:14px;outline:none;transition:border .15s}
.prompt-input:focus{border-color:var(--accent)}

/* Mobile */
/* Auth mobile */
@media(max-width:480px){
  .auth-card{padding:24px 16px;border-radius:12px;margin:0 8px}
  .auth-card h1{font-size:20px}
  .auth-card .sub{font-size:13px;margin-bottom:18px}
  .fg input{padding:12px 14px;font-size:15px}
  .btn{padding:13px;font-size:15px}
  .auth-tab{padding:10px;font-size:14px}
}
@media(max-width:768px){
  .sidebar{position:fixed;top:0;left:0;width:100%;min-width:100%;z-index:10;transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .3s;transform:translateX(0)}
  .sidebar.hidden{transform:translateX(-100%);opacity:0;pointer-events:none}
  .main{position:absolute;top:0;left:0;right:0;bottom:0;z-index:5}
  .main.chat-open{z-index:20}
  .back-btn{display:flex}
  .panel{max-width:100vw;width:100%}
  .user-panel{position:fixed;top:0;right:0;width:100%;min-width:100%;z-index:30;transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1)}
  .user-panel.show{transform:translateX(0)}
}
@media(min-width:769px){
  .back-btn{display:none}
  .user-panel:not(.force-hide){display:flex}
}