:root{--brand-primary: #f97316;--brand-primary-hover: #ea580c;--brand-primary-light: rgba(249, 115, 22, .12);--brand-primary-glow: rgba(249, 115, 22, .3);--brand-gradient: linear-gradient(135deg, #f97316, #ea580c);--sidebar-bg: #1a1a2e;--sidebar-hover: #16213e;--sidebar-active: rgba(249, 115, 22, .15);--sidebar-text: #a0aec0;--sidebar-text-active: #ffffff;--sidebar-width: 260px;--sidebar-collapsed: 72px;--bg-primary: #f1f5f9;--bg-secondary: #ffffff;--bg-card: #ffffff;--bg-card-hover: #f8fafc;--bg-input: #f8fafc;--text-primary: #1e293b;--text-secondary: #64748b;--text-tertiary: #94a3b8;--text-on-brand: #ffffff;--border-light: #e2e8f0;--border-medium: #cbd5e1;--status-success: #22c55e;--status-warning: #eab308;--status-error: #ef4444;--status-info: #3b82f6;--status-purple: #8b5cf6;--status-pink: #ec4899;--status-cyan: #06b6d4;--chat-bg: #efeae2;--chat-outgoing: #d9fdd3;--chat-incoming: #ffffff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .07), 0 2px 4px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, .08), 0 4px 6px -4px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 40px -5px rgba(0, 0, 0, .12);--shadow-glow: 0 0 20px rgba(249, 115, 22, .15);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease;--font-family: "Inter", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:14px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden}a{color:var(--brand-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--brand-primary-hover)}img{max-width:100%;display:block}input,textarea,select,button{font-family:inherit;font-size:inherit}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-medium);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.app-layout{display:flex;min-height:100vh}.app-main{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column;min-height:100vh;transition:margin-left var(--transition-base)}.app-content{flex:1;padding:24px;overflow-y:auto}.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-width);background:var(--sidebar-bg);display:flex;flex-direction:column;z-index:100;transition:width var(--transition-base);overflow:hidden}.sidebar-logo{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid rgba(255,255,255,.06)}.sidebar-logo-icon{width:42px;height:42px;background:var(--brand-gradient);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;font-weight:800;flex-shrink:0;box-shadow:0 4px 12px var(--brand-primary-glow)}.sidebar-logo-text{display:flex;flex-direction:column}.sidebar-logo-name{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.02em}.sidebar-logo-badge{font-size:9px;font-weight:700;color:var(--brand-primary);text-transform:uppercase;letter-spacing:.1em}.sidebar-section-title{padding:20px 20px 8px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--sidebar-text);opacity:.5}.sidebar-nav{flex:1;padding:8px 12px;overflow-y:auto}.sidebar-link{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-md);color:var(--sidebar-text);font-size:13.5px;font-weight:500;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;position:relative;margin-bottom:2px}.sidebar-link:hover{background:var(--sidebar-hover);color:var(--sidebar-text-active)}.sidebar-link.active{background:var(--sidebar-active);color:var(--brand-primary);font-weight:600}.sidebar-link.active:before{content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);width:3px;height:20px;background:var(--brand-primary);border-radius:0 3px 3px 0}.sidebar-link-icon{font-size:18px;flex-shrink:0;opacity:.8}.sidebar-link.active .sidebar-link-icon{opacity:1}.sidebar-badge{margin-left:auto;background:var(--brand-primary);color:#fff;font-size:10px;font-weight:700;padding:2px 7px;border-radius:var(--radius-full);min-width:20px;text-align:center}.sidebar-footer{padding:16px;border-top:1px solid rgba(255,255,255,.06)}.sidebar-workspace{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-md);background:#ffffff0a;margin-bottom:10px}.sidebar-workspace-avatar{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--brand-gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:14px;flex-shrink:0}.sidebar-workspace-info{display:flex;flex-direction:column;min-width:0}.sidebar-workspace-name{color:#fff;font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-workspace-plan{font-size:9px;font-weight:700;color:var(--brand-primary);background:var(--brand-primary-light);padding:1px 6px;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em;width:fit-content}.sidebar-signout{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:10px;border:none;border-radius:var(--radius-md);background:#ef44441a;color:#f87171;font-size:13px;font-weight:600;cursor:pointer;transition:all 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#0000000f}.message-bubble.outgoing{background:var(--chat-outgoing);align-self:flex-end;border-bottom-right-radius:4px;box-shadow:0 1px 1px #0000000f}.message-time{display:flex;align-items:center;justify-content:flex-end;gap:4px;margin-top:3px;font-size:10.5px;color:var(--text-tertiary)}.message-ticks{font-size:14px;color:var(--text-tertiary)}.message-ticks.read{color:#53bdeb}.message-input-bar{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--bg-secondary);border-top:1px solid var(--border-light)}.message-input-bar .input{flex:1;border-radius:var(--radius-full);padding:10px 18px}.message-send-btn{width:42px;height:42px;border-radius:50%;background:var(--brand-gradient);border:none;color:#fff;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);box-shadow:0 4px 12px 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ease}.modal{background:var(--bg-secondary);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);width:90%;max-width:500px;max-height:85vh;overflow-y:auto;animation:slideUp .3s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border-light)}.modal-title{font-size:16px;font-weight:700}.modal-close{width:32px;height:32px;border:none;border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px}.modal-body{padding:24px}.modal-footer{padding:16px 24px;border-top:1px solid var(--border-light);display:flex;justify-content:flex-end;gap:10px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 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ease}.auth-logo{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:32px}.auth-title{font-size:22px;font-weight:800;text-align:center;margin-bottom:6px;letter-spacing:-.02em}.auth-subtitle{font-size:13px;color:var(--text-secondary);text-align:center;margin-bottom:28px}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-divider{display:flex;align-items:center;gap:12px;margin:8px 0;color:var(--text-tertiary);font-size:12px}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--border-light)}.auth-link{text-align:center;font-size:13px;color:var(--text-secondary);margin-top:16px}@media (max-width: 1024px){.conversations-layout{grid-template-columns:300px 1fr}.contact-detail-panel{display:none}}@media (max-width: 768px){.sidebar{width:var(--sidebar-collapsed)}.app-main{margin-left:var(--sidebar-collapsed)}.sidebar-logo-text,.sidebar-link span,.sidebar-section-title,.sidebar-workspace-info,.sidebar-signout span,.sidebar-badge{display:none}.sidebar-link{justify-content:center;padding:12px}.conversations-layout{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}}.spinner{width:24px;height:24px;border:3px solid var(--border-light);border-top-color:var(--brand-primary);border-radius:50%;animation:spin .6s linear infinite}.page-loader{display:flex;align-items:center;justify-content:center;height:60vh}.toast{position:fixed;bottom:24px;right:24px;padding:14px 20px;border-radius:var(--radius-md);font-size:13px;font-weight:500;box-shadow:var(--shadow-lg);z-index:300;animation:slideUp .3s ease;display:flex;align-items:center;gap:10px}.toast-success{background:#065f46;color:#fff}.toast-error{background:#991b1b;color:#fff}.toast-info{background:#1e40af;color:#fff}.global-filter{display:flex;align-items:center;gap:10px}.global-filter .select{padding:8px 12px;font-size:12px;font-weight:600}