@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg-primary: #1E1F20;--bg-surface: #2A2B2D;--bg-elevated: #353638;--bg-hover: #3A3B3D;--accent: #FFA3A3;--accent-hover: #FFB8B8;--accent-pressed: #E08E8E;--accent-dim: rgba(255, 163, 163, .08);--text-primary: #FFFFFF;--text-secondary: #AAAAAA;--text-muted: #6B6B6B;--bubble-sent: rgba(255, 163, 163, .15);--bubble-received: #2A2B2D;--online: #4CAF50;--error: #FF5252;--success: #66BB6A;--warning: #FFD54F;--divider: rgba(255, 255, 255, .06);--overlay: rgba(0, 0, 0, .5);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 50%;--shadow-sm: 0 2px 8px rgba(0,0,0,.3);--shadow-md: 0 4px 16px rgba(0,0,0,.4);--shadow-lg: 0 8px 32px rgba(0,0,0,.5);--transition: .2s cubic-bezier(.4, 0, .2, 1);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 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#ffa3a34d}.btn-primary:active{background:var(--accent-pressed);transform:none}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary)}.btn-secondary:hover{background:var(--bg-hover)}.btn-ghost{background:transparent;color:var(--text-secondary);padding:8px}.btn-ghost:hover{color:var(--text-primary);background:#ffffff0f;border-radius:var(--radius-full)}.btn-danger{background:#ff52521a;color:var(--error)}.btn-danger:hover{background:#ff525233}.icon-btn{width:40px;height:40px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);font-size:20px}.icon-btn:hover{background:#ffffff0f;color:var(--text-primary)}.input{width:100%;padding:10px 14px;background:var(--bg-primary);border:1.5px solid transparent;border-radius:var(--radius-lg);color:var(--text-primary);font-family:inherit;font-size:14px;outline:none;transition:all var(--transition)}.input::placeholder{color:var(--text-muted)}.input:focus{border-color:var(--accent);background:#ffa3a308}.app-layout{display:flex;height:100vh;width:100vw}.sidebar{width:340px;min-width:340px;background:var(--bg-surface);border-right:1px solid var(--divider);display:flex;flex-direction:column;position:relative;z-index:10}.sidebar-header{height:56px;padding:0 8px 0 6px;display:flex;align-items:center;gap:4px}.sidebar-header .hamburger-btn{width:40px;height:40px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);font-size:22px;flex-shrink:0}.sidebar-header 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0}.chat-info-top{display:flex;justify-content:space-between;align-items:baseline}.chat-name{font-size:15px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.chat-time{font-size:12px;color:var(--text-muted);flex-shrink:0;margin-left:8px}.chat-info-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:3px}.chat-preview{font-size:13px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.chat-draft{color:var(--accent);font-style:italic}.chat-badge{min-width:22px;height:22px;background:linear-gradient(135deg,#ff5252,#ff7b7b);color:#fff;border-radius:11px;font-size:11px;font-weight:700;letter-spacing:.3px;display:flex;align-items:center;justify-content:center;padding:0 7px;flex-shrink:0;margin-left:8px;box-shadow:0 0 8px #ff525266;animation:badgePop .3s ease-out}@keyframes 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.last-seen{color:var(--text-muted)}.chat-header-status .info-hint{color:var(--text-muted);opacity:.7}.chat-header-actions{display:flex;gap:4px}.messages-container{flex:1;overflow-y:auto;padding:12px 16px;display:flex;flex-direction:column-reverse;gap:2px}.message-group{display:flex;flex-direction:column;max-width:70%}.message-group.sent{align-self:flex-end}.message-group.received{align-self:flex-start}.message-bubble{padding:7px 12px 6px;border-radius:12px;font-size:14px;line-height:1.4;word-break:break-word;position:relative;animation:msgIn .2s ease-out}.message-bubble.sent{background:var(--bubble-sent);border-bottom-right-radius:4px}.message-bubble.received{background:var(--bubble-received);border-bottom-left-radius:4px;border:1px solid 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var(--divider)}.msg-inline-code{background:var(--bg-primary);padding:1px 5px;border-radius:4px;font-family:Cascadia Code,Fira Code,Consolas,monospace;font-size:13px}.msg-link{color:var(--accent);text-decoration:none;word-break:break-all}.msg-link:hover{text-decoration:underline}.select-toolbar{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--bg-surface);border-top:1px solid var(--divider)}.select-count{font-size:13px;color:var(--text-secondary);flex:1}.msg-select-checkbox{display:flex;align-items:center;margin-right:6px}.msg-select-checkbox input{width:18px;height:18px;accent-color:var(--accent);cursor:pointer}.message-group.selected{background:rgba(var(--accent-rgb, 99,102,241),.08);border-radius:8px}.message-input-area{padding:8px 12px;background:var(--bg-surface);border-top:1px solid var(--divider);display:flex;align-items:flex-end;gap:8px}.message-input-area textarea{flex:1;padding:10px 16px;background:var(--bg-primary);border:1.5px solid transparent;border-radius:20px;color:var(--text-primary);font-family:inherit;font-size:14px;resize:none;min-height:42px;max-height:160px;outline:none;transition:border-color var(--transition)}.message-input-area textarea:focus{border-color:var(--accent)}.message-input-area textarea::placeholder{color:var(--text-muted)}.send-btn{width:42px;height:42px;background:var(--accent);border:none;border-radius:var(--radius-full);color:var(--bg-primary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition);flex-shrink:0;font-size:18px}.send-btn:hover{background:var(--accent-hover);transform:scale(1.05)}.send-btn:active{background:var(--accent-pressed);transform:scale(.95)}.send-btn:disabled{opacity:.3;cursor:not-allowed;transform:none}.slow-mode-btn{gap:4px;font-size:12px;font-weight:600;opacity:.6!important}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);gap:12px}.empty-state-icon{font-size:72px;opacity:.2}.empty-state h2{font-size:20px;font-weight:600;color:var(--text-secondary)}.empty-state p{font-size:14px;max-width:300px;text-align:center;color:var(--text-muted)}.auth-page{display:flex;align-items:center;justify-content:center;height:100vh;background:var(--bg-primary)}.auth-card{width:360px;max-width:calc(100% - 32px);padding:48px 32px 32px;background:var(--bg-surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);animation:fadeInScale .3s ease-out}.auth-card h1{font-size:32px;font-weight:700;color:var(--accent);text-align:center;margin-bottom:8px}.auth-card p{text-align:center;color:var(--text-secondary);margin-bottom:28px;font-size:14px}.auth-card .form-group{margin-bottom:16px}.auth-card .form-group label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:6px}.auth-card .btn-primary{width:100%;padding:14px;font-size:15px;margin-top:8px}.auth-card .auth-switch{text-align:center;margin-top:20px;font-size:14px;color:var(--text-secondary)}.auth-card .auth-switch a{color:var(--accent);text-decoration:none;font-weight:600}.auth-card .auth-switch a:hover{text-decoration:underline}.auth-error{background:#ff52521a;color:var(--error);padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:16px}.hamburger-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--overlay);z-index:100;animation:fadeIn .2s 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ease-out}.modal-content{background:var(--bg-surface);border-radius:var(--radius-xl);width:420px;max-width:calc(100% - 32px);max-height:80vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);animation:modalIn .2s ease-out;overflow:hidden}.modal-header{padding:16px 20px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--divider)}.modal-header h2{font-size:18px;font-weight:600;flex:1}.modal-body{padding:16px 20px;overflow-y:auto;flex:1}.modal-footer{padding:12px 20px;display:flex;gap:8px;justify-content:flex-end;border-top:1px solid var(--divider)}.settings-page{width:340px;min-width:340px;background:var(--bg-surface);border-right:1px solid var(--divider);display:flex;flex-direction:column;animation:slideInLeft .2s ease-out}.settings-header{height:56px;padding:0 8px;display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--divider)}.settings-header h2{font-size:18px;font-weight:600;flex:1}.settings-profile{padding:24px 20px;display:flex;flex-direction:column;align-items:center;gap:12px;border-bottom:1px solid var(--divider)}.settings-avatar{width:80px;height:80px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--accent),#FF7B7B);display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;color:var(--bg-primary);cursor:pointer;overflow:hidden;position:relative;transition:opacity var(--transition)}.settings-avatar:hover{opacity:.85}.settings-avatar img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;border-radius:var(--radius-full)}.settings-name{font-size:18px;font-weight:600}.settings-email{font-size:13px;color:var(--text-muted)}.settings-section{padding:8px 0}.settings-section-title{padding:8px 20px;font-size:13px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.5px}.settings-item{display:flex;align-items:center;gap:16px;padding:12px 20px;cursor:pointer;transition:background 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var(--transition-fast);border-radius:var(--radius-sm)}.user-result:hover{background:#ffffff0a}.user-result-avatar{width:42px;height:42px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--accent),#FF7B7B);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--bg-primary);flex-shrink:0}.user-result-info{flex:1}.user-result-name{font-size:15px;font-weight:500}.user-result-username{font-size:13px;color:var(--text-secondary)}.new-group-btn{border-radius:var(--radius-sm);margin-bottom:8px;background:var(--bg-elevated);border:1px solid var(--divider)}.new-group-btn:hover{background:var(--bg-hover)}.new-group-avatar{background:var(--accent-dim)!important;color:var(--accent)!important}.new-group-text{color:var(--accent)}.typing-indicator{height:20px;padding:2px 16px;font-size:12px;color:var(--accent);font-style:italic;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;flex-shrink:0}.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 10px 4px 4px;background:var(--accent-dim);border-radius:16px;font-size:13px;color:var(--accent)}.chip-avatar{width:24px;height:24px;border-radius:var(--radius-full);background:var(--accent);color:var(--bg-primary);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}.chip-remove{width:18px;height:18px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;background:#ffffff1a;border:none;color:var(--text-muted);cursor:pointer;font-size:12px;margin-left:2px}.chip-remove:hover{background:#ff525233;color:var(--error)}@keyframes fadeInScale{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes msgIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes 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