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svg{width:16px;height:16px}.messages-container{padding:14px;overscroll-behavior:contain}.message-bubble{max-width:85%;padding:10px 13px}.message-bubble p{font-size:13.5px}.message-bubble .message-time{font-size:10px}.message-input-container{padding:10px 14px;padding-bottom:max(10px,env(safe-area-inset-bottom));gap:7px}.attachment-btn,.emoji-btn{width:34px;height:34px}.attachment-btn svg,.emoji-btn svg{width:18px;height:18px}.message-input{padding:9px 14px;font-size:13.5px}.send-btn{width:38px;height:38px;min-width:38px;min-height:38px}.send-btn svg{width:16px;height:16px}.emoji-picker-container{bottom:62px;right:14px;left:14px;max-height:50vh;max-height:50dvh}.emoji-picker-container aside{width:100%!important}.no-chat-selected h2{font-size:20px}.no-chat-selected p{font-size:13px;padding:0 18px}.no-chat-icon{font-size:64px}.sidebar-header{padding:18px 18px 14px}.logo-text{font-size:18px}.current-user{padding:14px 18px}.current-user .user-avatar{width:40px;height:40px}.current-user h3{font-size:13px}.search-container{padding:10px 14px}.user-item{padding:10px 12px}.user-item .user-avatar{width:40px;height:40px}.user-details h5{font-size:13px}.last-message{font-size:11px}}@media(max-width:480px){.sidebar{width:88%;max-width:100%}.chat-header{padding:9px 11px;min-height:58px}.chat-actions button:nth-child(2){display:none}.message-bubble{max-width:90%;padding:8px 11px}.message-bubble p{font-size:13px}.no-messages h3{font-size:16px}.no-messages p{font-size:12px;padding:0 14px}.no-messages-icon{font-size:44px}.emoji-picker-container{left:6px;right:6px;bottom:58px}.message-input-container{padding:8px 10px}.message-input{font-size:13px;padding:8px 13px}.no-chat-selected h2{font-size:18px;padding:0 20px;text-align:center}.no-chat-selected p{padding:0 22px;text-align:center;font-size:12px}}@media(max-width:768px)and (orientation:landscape){.sidebar{width:68%;max-width:270px}.messages-container{padding:10px 14px}.no-chat-selected h2{font-size:18px}.no-chat-icon{font-size:54px;margin-bottom:14px}}@media(max-width:768px){.message-image{max-width:180px}}@media(max-width:480px){.message-image{max-width:140px}}.select-mode-btn{background:transparent;border:1px solid transparent;border-radius:8px;padding:5px 9px;cursor:pointer;color:var(--text-muted);font-size:12px;font-weight:600;font-family:inherit;display:flex;align-items:center;gap:4px;transition:all .15s ease}.select-mode-btn:hover{background:var(--accent-subtle);border-color:var(--border-accent);color:var(--accent-primary)}.select-mode-btn.active{background:#ef44441a;border-color:#ef444440;color:var(--red)}.user-item.selectable{cursor:pointer;-webkit-user-select:none;user-select:none}.user-item.selectable:hover{background:var(--bg-hover);border-color:var(--border-subtle);transform:translate(2px)}.user-item.selected-chat{background:#6366f11f;border-color:var(--border-accent)}.chat-checkbox{width:20px;height:20px;border-radius:50%;border:2px solid var(--border-accent);background:transparent;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .18s ease}.chat-checkbox.checked{background:var(--accent-primary);border-color:var(--accent-primary);box-shadow:0 0 10px var(--accent-glow);transform:scale(1.05)}.delete-action-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;margin:4px 8px 6px;background:#ef444414;border:1px solid rgba(239,68,68,.2);border-radius:11px;animation:slideUp .2s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.delete-count{font-size:13px;font-weight:600;color:var(--text-muted)}.delete-chats-btn{display:flex;align-items:center;gap:6px;padding:7px 13px;background:var(--red, #ef4444);border:none;border-radius:8px;color:#fff;font-size:13px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 14px #ef444459}.delete-chats-btn:hover{background:#dc2626;transform:translateY(-1px);box-shadow:0 6px 18px #ef444473}.delete-chats-btn:active{transform:translateY(0)}.message-bubble-wrapper{position:relative;display:inline-flex;align-items:flex-end;gap:6px;max-width:100%}.message.me .message-bubble-wrapper{flex-direction:row-reverse}.message.them .message-bubble-wrapper{flex-direction:row}.msg-context-btn{opacity:0;transition:opacity .15s ease,transform .15s ease;background:var(--accent-subtle);border:1px solid var(--border-accent);border-radius:50%;width:26px;height:26px;color:var(--accent-primary);cursor:pointer;font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-bottom:4px}.message:hover .msg-context-btn{opacity:1}.msg-context-btn:hover{background:var(--accent-primary);color:#fff;transform:scale(1.12)}.message.msg-selectable{cursor:pointer;border-radius:10px;padding:2px 4px;margin-left:-4px;margin-right:-4px;transition:background .12s ease}.message.msg-selectable:hover{background:#6366f112}.message.msg-selected{background:#6366f121!important;border-radius:10px}.msg-checkbox{width:18px;height:18px;border-radius:50%;border:2px solid var(--border-accent);background:transparent;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:all .15s ease;align-self:center;margin:0 4px}.msg-checkbox.checked{background:var(--accent-primary);border-color:var(--accent-primary);box-shadow:0 0 8px var(--accent-glow)}.msg-selection-toolbar{display:flex;align-items:center;justify-content:space-between;width:100%;animation:fadeIn .15s ease}.msg-sel-cancel{display:flex;align-items:center;gap:6px;background:transparent;border:1px solid var(--border-subtle);border-radius:8px;padding:7px 12px;color:var(--text-muted);font-size:13px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .2s ease}.msg-sel-cancel:hover{background:var(--bg-hover);color:var(--text-primary)}.msg-sel-count{font-size:15px;font-weight:700;color:var(--text-primary);letter-spacing:-.01em}.msg-sel-delete{display:flex;align-items:center;gap:7px;background:var(--red, #ef4444);border:none;border-radius:8px;padding:8px 16px;color:#fff;font-size:13px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 14px #ef444459}.msg-sel-delete:hover:not(:disabled){background:#dc2626;transform:translateY(-1px);box-shadow:0 6px 18px #ef444473}.msg-sel-delete:disabled{opacity:.4;cursor:not-allowed;box-shadow:none}.msg-sel-actions{display:flex;align-items:center;gap:8px}.msg-sel-delete.for-me{background:var(--bg-hover, rgba(99,102,241,.12));color:var(--text-primary);box-shadow:none;border:1px solid var(--border-subtle)}.msg-sel-delete.for-me:hover:not(:disabled){background:#6366f133;color:var(--accent-primary);border-color:var(--border-accent);transform:translateY(-1px);box-shadow:0 4px 12px #6366f133}.msg-sel-delete.for-everyone{background:var(--red, #ef4444);box-shadow:0 4px 14px #ef444459}.msg-sel-delete.for-everyone:hover:not(:disabled){background:#dc2626;transform:translateY(-1px);box-shadow:0 6px 18px #ef444473}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem;position:relative;overflow:hidden;background:var(--bg-primary);transition:background .3s ease}.auth-background{position:absolute;inset:0;overflow:hidden;z-index:0}.gradient-orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.45;animation:orbFloat 18s ease-in-out infinite}.orb-1{width:520px;height:520px;background:var(--orb-1);top:-180px;left:-160px;animation-delay:0s}.orb-2{width:450px;height:450px;background:var(--orb-2);bottom:-160px;right:-140px;animation-delay:6s}.orb-3{width:360px;height:360px;background:var(--orb-3);top:55%;left:55%;animation-delay:12s;opacity:.2}@keyframes orbFloat{0%,to{transform:translate(0) scale(1)}33%{transform:translate(40px,-40px) scale(1.08)}66%{transform:translate(-30px,25px) scale(.94)}}.auth-card{position:relative;z-index:1;width:100%;max-width:440px;background:var(--card-bg);backdrop-filter:blur(28px) saturate(1.4);-webkit-backdrop-filter:blur(28px) saturate(1.4);border:1px solid var(--card-border);border-radius:24px;padding:3rem 2.75rem;box-shadow:var(--shadow-card),0 0 0 1px #ffffff0a inset;animation:cardSlideUp .55s cubic-bezier(.16,1,.3,1);transition:background .3s ease,border-color .3s ease}@keyframes cardSlideUp{0%{opacity:0;transform:translateY(32px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.auth-header{text-align:center;margin-bottom:2.25rem}.logo-container{margin-bottom:1.25rem}.logo-icon{font-size:3.5rem;display:inline-block;animation:logoBounce 3s ease-in-out infinite;filter:drop-shadow(0 0 18px rgba(99,102,241,.5))}@keyframes logoBounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.auth-title{font-size:1.9rem;font-weight:800;letter-spacing:-.03em;background:linear-gradient(135deg,#a5b4fc,#c4b5fd,#f0abfc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.4rem}[data-theme=light] .auth-title{background:linear-gradient(135deg,#6366f1,#8b5cf6,#a855f7);-webkit-background-clip:text;background-clip:text}.auth-subtitle{color:var(--text-secondary);font-size:.9rem;font-weight:400;letter-spacing:.01em}.auth-form{display:flex;flex-direction:column;gap:1.25rem}.form-group{display:flex;flex-direction:column;gap:.45rem}.form-label{font-size:.8rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.06em}.input-wrapper{position:relative;display:flex;align-items:center}.input-icon{position:absolute;left:1rem;width:17px;height:17px;color:var(--text-muted);pointer-events:none;transition:color .25s ease}.form-input{width:100%;padding:.85rem 1rem .85rem 2.85rem;border:1px solid var(--border-subtle);border-radius:12px;font-size:.93rem;font-family:inherit;color:var(--text-primary);background:var(--input-bg);transition:all .25s ease;outline:none}.form-input::placeholder{color:var(--text-dim)}.form-input:focus{border-color:var(--accent-primary);background:var(--accent-subtle);box-shadow:0 0 0 3px #6366f12e,0 0 20px #6366f114}.form-input:focus~.input-icon,.input-wrapper:focus-within .input-icon{color:var(--accent-primary)}.error-message{display:flex;align-items:center;gap:.75rem;padding:.875rem 1rem;background:#ef444412;border:1px solid rgba(239,68,68,.2);border-radius:10px;color:#f87171;font-size:.85rem;animation:shake .35s ease}[data-theme=light] .error-message{background:#fef2f2;border-color:#fecaca;color:#dc2626}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}.error-icon{width:18px;height:18px;flex-shrink:0}.submit-btn{width:100%;padding:.95rem;background:var(--accent-gradient);color:#fff;font-size:.95rem;font-weight:700;font-family:inherit;letter-spacing:.02em;border:none;border-radius:12px;cursor:pointer;transition:all .25s ease;position:relative;overflow:hidden;margin-top:.5rem;box-shadow:0 4px 16px var(--accent-glow)}.submit-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);transition:left .45s ease}.submit-btn:hover:before{left:100%}.submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 28px var(--accent-glow)}.submit-btn:active:not(:disabled){transform:translateY(0)}.submit-btn:disabled{opacity:.55;cursor:not-allowed}.loading-spinner{display:inline-block;width:18px;height:18px;border:2.5px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-footer{margin-top:1.75rem;text-align:center}.auth-switch{color:var(--text-muted);font-size:.875rem}.auth-link{color:var(--accent-secondary);font-weight:600;text-decoration:none;transition:color .2s ease}.auth-link:hover{color:var(--accent-primary);text-decoration:underline}@media(max-width:640px){.auth-container{padding:1.25rem}.auth-card{padding:2.25rem 1.75rem}.auth-title{font-size:1.6rem}.logo-icon{font-size:2.75rem}}@media(max-width:375px){.auth-container{padding:1rem}.auth-card{padding:1.75rem 1.25rem}.auth-title{font-size:1.4rem}.auth-header{margin-bottom:1.75rem}.form-input{font-size:.875rem}.submit-btn{font-size:.9rem}}