:root{--bg-primary:#111117;--bg-secondary:#1b1924;--bg-tertiary:#252330;--text-primary:#e8edf5;--text-secondary:#8b96aa;--accent:#3b82f6;--accent-dark:#1e40af;--bubble-sent:linear-gradient(145deg, #2563eb 0%, #1b40bf 100%);--bubble-received:linear-gradient(160deg, #2d2b3d 0%, #252238 100%);--border:#302d3b;--online:#22c55e;--sidebar-width:320px;--bg-messages:#0f0d0b;--sat:env(safe-area-inset-top,0px);--sab:env(safe-area-inset-bottom,0px);--sal:env(safe-area-inset-left,0px);--sar:env(safe-area-inset-right,0px);--msg-font-size:14px}body.fontsize-small{--msg-font-size:12px}body.fontsize-large{--msg-font-size:17px}body.theme-light{--bg-primary:#f0f2f5;--bg-secondary:#fff;--bg-tertiary:#e4e6ea;--text-primary:#1c1e21;--text-secondary:#65676b;--bubble-sent:linear-gradient(145deg, #2563eb 0%, #1b40bf 100%);--bubble-received:#fff;--border:#d8dadf;--bg-messages:#e9ebee}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;height:100%}body{background:var(--bg-primary);height:100%;color:var(--text-primary);overscroll-behavior:none;-webkit-tap-highlight-color:transparent;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,sans-serif}#root{height:100%}.chat-root{background:var(--bg-primary);display:flex;position:fixed;inset:0}.chat-sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);flex-direction:column;transition:width .22s,min-width .22s,border-width .22s;display:flex;overflow:hidden}.chat-sidebar.collapsed{border-right-width:0;width:0;min-width:0}.chat-main{flex-direction:column;flex:1;min-width:0;display:flex;position:relative}.chat-empty{color:var(--text-secondary);flex:1;justify-content:center;align-items:center;font-size:15px;display:flex}.auth-screen{background:var(--bg-primary);padding:calc(var(--sat) + 24px) calc(var(--sar) + 24px) calc(var(--sab) + 24px) calc(var(--sal) + 24px);justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.auth-card{background:var(--bg-secondary);border-radius:16px;flex-direction:column;gap:14px;width:100%;max-width:380px;padding:32px 28px;display:flex;box-shadow:0 8px 32px #0006}.auth-title{color:var(--text-primary);text-align:center;margin-bottom:4px;font-size:22px;font-weight:700}.auth-error{color:#f87171;text-align:center;background:#f871711a;border-radius:8px;padding:8px 12px;font-size:14px}.auth-input{border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);-webkit-appearance:none;border-radius:10px;outline:none;width:100%;padding:13px 16px;font-size:16px;transition:border-color .15s}.auth-input:focus{border-color:var(--accent)}.auth-btn{background:var(--accent);color:#fff;cursor:pointer;-webkit-appearance:none;border:none;border-radius:10px;padding:13px;font-size:16px;font-weight:600;transition:opacity .15s,transform .15s,box-shadow .15s}@media (hover:hover){.auth-btn:hover{opacity:.9;transform:translateY(-1px);box-shadow:0 4px 16px #3b82f673}}.auth-btn:active{opacity:.8;transform:translateY(0)}.auth-link{color:var(--accent);cursor:pointer;text-align:center;-webkit-appearance:none;background:0 0;border:none;padding:4px;font-size:15px}.sidebar-header{padding:calc(var(--sat) + 10px) 12px 10px;border-bottom:1px solid var(--border);background:linear-gradient(to bottom, #3b82f617 0%, var(--bg-secondary) 100%);min-height:calc(var(--sat) + 50px);align-items:center;gap:4px;display:flex}.chat-header{padding:calc(var(--sat) + 8px) calc(var(--sar) + 14px) 8px calc(var(--sal) + 14px);-webkit-backdrop-filter:blur(20px)saturate(160%);min-height:calc(var(--sat) + 50px);background:#252330d1;border-bottom:1px solid #ffffff12;align-items:center;gap:10px;display:flex;box-shadow:0 1px #ffffff0d,0 2px 12px #00000038}.messages-area{-webkit-overflow-scrolling:touch;overscroll-behavior:contain;scroll-behavior:smooth;background-color:var(--bg-messages);background-image:radial-gradient(circle,#ffe1b40d 1px,#0000 1px);background-size:22px 22px;flex:1;min-height:0;padding:12px 14px;scroll-padding-bottom:12px;overflow:hidden auto}.wallpaper-solid .messages-area{background-image:none}.wallpaper-navy .messages-area{background-color:#080e1c;background-image:none}.wallpaper-forest .messages-area{background-color:#081410;background-image:none}.wallpaper-dusk .messages-area{background-color:#110a1a;background-image:none}.wallpaper-warm .messages-area{background-color:#13100a}.input-bar{padding:8px 10px calc(var(--sab) + 8px);-webkit-backdrop-filter:blur(16px)saturate(140%);background:#1b1924e0;border-top:none;align-items:flex-end;gap:6px;display:flex;box-shadow:0 -1px #fff1,0 -6px 18px #00000047}body.theme-light .input-bar{background:#ffffffe0}.message-input{background:var(--bg-tertiary);color:var(--text-primary);-webkit-appearance:none;border:1px solid #ffffff14;border-radius:20px;outline:none;flex:1;min-height:38px;max-height:130px;padding:9px 14px;font-size:16px;line-height:1.4;transition:border-color .15s,box-shadow .15s;display:block;overflow-y:auto}.message-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #3b82f61f}.message-input:empty:before{content:attr(data-placeholder);color:var(--text-secondary);pointer-events:none}.send-btn{color:#fff;cursor:pointer;-webkit-appearance:none;background:linear-gradient(135deg,#3b82f6,#1d4ed8);border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:16px;transition:transform .15s,box-shadow .15s,opacity .15s;display:flex;box-shadow:0 2px 8px #3b82f659}@media (hover:hover){.send-btn:hover{transform:scale(1.07);box-shadow:0 4px 16px #3b82f680}}.send-btn:active{opacity:.8;transform:scale(.95)}.search-input{border:1px solid var(--border);background:var(--bg-tertiary);width:100%;color:var(--text-primary);-webkit-appearance:none;border-radius:20px;outline:none;padding:9px 14px;font-size:16px;transition:border-color .15s,box-shadow .15s}.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #3b82f61f}.conv-list{-webkit-overflow-scrolling:touch;flex:1;min-height:0;overflow:hidden auto}.conv-item{cursor:pointer;border-left:4px solid #0000;align-items:center;gap:12px;min-height:64px;padding:12px 14px;transition:background .12s,border-left-color .12s,transform .12s;display:flex}@media (hover:hover){.conv-item:hover{background:#ffffff0a;transform:translate(2px)}}.conv-item+.conv-item{border-top:1px solid #ffffff0e}.conv-item.active{border-left-color:var(--accent);background:linear-gradient(90deg,#3b82f633 0%,#3b82f60f 100%)}.back-btn{display:none}@media (width>=641px) and (width<=768px){.back-btn{justify-content:center;align-items:center;display:flex}}.desktop-only{display:flex}@media (width<=640px){.chat-sidebar{z-index:10;width:100%;min-width:0;transition:transform .25s;position:absolute;inset:0}.chat-sidebar.hidden{pointer-events:none;transform:translate(-100%)}.chat-main{z-index:10;width:100%;transition:transform .25s;position:absolute;inset:0}.chat-main.hidden{pointer-events:none;transform:translate(100%)}.desktop-only{display:none!important}.back-btn{justify-content:center;align-items:center;display:flex}}@media (width>=641px){::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px;transition:background .15s}::-webkit-scrollbar-thumb:hover{background:#8b96aa8c}}::selection{color:var(--text-primary);background:#3b82f64d}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.msg-reply-preview{border-left:3px solid var(--accent);white-space:nowrap;text-overflow:ellipsis;background:#0000002e;border-radius:0 6px 6px 0;margin-bottom:6px;padding:5px 8px;font-size:12px;transition:background .12s;overflow:hidden}.msg-reply-preview[data-jumpable=true]{cursor:pointer}@media (hover:hover){.msg-reply-preview[data-jumpable=true]:hover{background:#3b82f624}}.msg-reply-sent .msg-reply-preview{background:#ffffff1f;border-left-color:#ffffffa6}@media (hover:hover){.msg-reply-sent .msg-reply-preview[data-jumpable=true]:hover{background:#fff3}}body.theme-light .msg-reply-preview{background:#0000000f}body.theme-light .msg-reply-sent .msg-reply-preview{background:#ffffff38}.date-separator{text-align:center;align-items:center;gap:10px;margin:14px 0 8px;display:flex}.date-separator:before,.date-separator:after{content:"";background:var(--border);opacity:.5;flex:1;height:1px}.date-separator-label{background:var(--bg-secondary);border:1px solid var(--border);color:var(--text-secondary);white-space:nowrap;letter-spacing:.2px;border-radius:12px;padding:3px 12px;font-size:11px;font-weight:500}@keyframes msgIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.msg-anim{animation:.15s ease-out msgIn}@keyframes hoverBarIn{0%{opacity:0;transform:scale(.92)translateY(2px)}to{opacity:1;transform:scale(1)translateY(0)}}.msg-hover-bar{animation:.12s ease-out hoverBarIn}@keyframes heartPop{0%{opacity:0;transform:scale(.4)}40%{opacity:1;transform:scale(1.3)}70%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(1.1)}}.colorblind{--accent:#e07b00;--accent-dark:#b35e00;--bubble-sent:#c46200;--online:#07c}.colorblind .online-dot:after{content:"●";font-size:8px}.typing-indicator{background:var(--bubble-received);border-radius:18px 18px 18px 2px;align-items:center;gap:4px;width:fit-content;margin-bottom:6px;padding:10px 14px;display:flex;box-shadow:0 3px 10px #00000059,0 0 0 1px #ffffff17}.typing-dot{background:var(--text-secondary);border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite typingBounce}.typing-dot:nth-child(2){animation-delay:.18s}.typing-dot:nth-child(3){animation-delay:.36s}.header-typing-dots{vertical-align:middle;align-items:center;gap:2px;margin-left:2px;display:inline-flex}.header-typing-dots span{background:var(--accent);border-radius:50%;width:4px;height:4px;animation:1.2s ease-in-out infinite typingBounce;display:inline-block}.header-typing-dots span:nth-child(2){animation-delay:.18s}.header-typing-dots span:nth-child(3){animation-delay:.36s}@keyframes typingBounce{0%,60%,to{opacity:.45;transform:translateY(0)scale(1)}30%{opacity:1;transform:translateY(-5px)scale(1.25)}}@keyframes toastIn{0%{opacity:0;transform:translate(-50%)translateY(8px)}to{opacity:1;transform:translate(-50%)translateY(0)}}@keyframes notifSlideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.conv-name{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:15px;font-weight:700;line-height:1.3;overflow:hidden}.conv-preview{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;margin-top:2px;font-size:13px;line-height:1.3;overflow:hidden}.conv-time{color:var(--text-secondary);white-space:nowrap;font-variant-numeric:tabular-nums;flex-shrink:0;font-size:11px}.conv-item.unread{border-left-color:#3b82f673}.conv-item.unread .conv-time{color:var(--accent);font-weight:600}.conv-item.unread .conv-preview{color:var(--text-primary);font-weight:500}.conv-item.unread .conv-name{color:#fff;text-shadow:0 0 20px #3b82f633}.msg-menu-item{cursor:pointer;color:var(--text-primary);border-bottom:1px solid var(--border);-webkit-user-select:none;user-select:none;padding:12px 16px;font-size:14px;transition:background .1s}@media (hover:hover){.msg-menu-item:hover{background:#ffffff0e}}.msg-menu-item:active{background:#ffffff17}.msg-menu-item-danger{color:#f87171}.msg-menu-cancel{cursor:pointer;color:var(--text-secondary);-webkit-user-select:none;user-select:none;padding:10px 16px;font-size:12px;transition:background .1s}@media (hover:hover){.msg-menu-cancel:hover{background:#ffffff0e}}body.theme-light .conv-item+.conv-item{border-top-color:#0000000f}@media (hover:hover){body.theme-light .conv-item:hover{background:#0000000a}}body.theme-light .conv-item.active{background:linear-gradient(90deg,#3b82f61a 0%,#3b82f608 100%)}body.theme-light .conv-item.unread{border-left-color:#3b82f68c}.input-bar:focus-within{box-shadow:0 -2px #3b82f647,0 -6px 18px #00000047}@media (prefers-reduced-motion:reduce){.msg-anim,.msg-hover-bar{animation:none}.typing-dot{opacity:.6;animation:none}.reveal{transition:none}.conv-item{transition:background .12s}.messages-area{scroll-behavior:auto}}@keyframes badgePulse{0%,to{box-shadow:0 0 0 3px #3b82f638}50%{box-shadow:0 0 0 5px #3b82f617}}.unread-badge{background:var(--accent);color:#fff;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;min-width:20px;height:20px;padding:0 5px;font-size:11px;font-weight:700;animation:2.5s ease-in-out infinite badgePulse;display:flex}.input-bar:focus-within .send-btn{box-shadow:0 4px 16px #3b82f68c}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}input:focus-visible,button:focus-visible,textarea:focus-visible{outline-offset:0px}