:root{--biachat-font:"IRANSansX", "Vazirmatn", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--biachat-primary:#1E40D8;--biachat-primary-hover:#1D35B5;--biachat-primary-glow:rgba(30, 64, 216, 0.35);--biachat-gradient:linear-gradient(135deg, #1E40D8 0%, #3B82F6 100%);--biachat-bg:#FFFFFF;--biachat-surface:#F8FAFC;--biachat-text:#0F172A;--biachat-text-muted:#64748B;--biachat-border:#E2E8F0;--biachat-operator-bubble:#F1F5F9;--biachat-operator-text:#0F172A;--biachat-operator-border:#E2E8F0;--biachat-user-bubble:linear-gradient(135deg, #1E40D8 0%, #2563EB 100%);--biachat-user-text:#FFFFFF;--biachat-input-bg:#F8FAFC;--biachat-input-border:#E2E8F0;--biachat-input-text:#0F172A;--biachat-chip-bg:#EFF6FF;--biachat-chip-border:#DBEAFE;--biachat-chip-text:#1E40D8;--biachat-shadow:0 20px 45px -10px rgba(15, 23, 42, 0.15), 0 10px 20px -5px rgba(0, 0, 0, 0.08);--biachat-radius:20px}html[data-theme="dark"] #biachat-root,html[data-bs-theme="dark"] #biachat-root,body.dark #biachat-root,#biachat-root.biachat-theme-dark,[data-theme="dark"] .biachat-window,.dark .biachat-window{--biachat-primary:#2B44FF;--biachat-primary-hover:#4B63FF;--biachat-primary-glow:rgba(43, 68, 255, 0.45);--biachat-gradient:linear-gradient(135deg, #1E40D8 0%, #3B82F6 100%);--biachat-bg:#0B101B;--biachat-surface:#131B2E;--biachat-text:#F8FAFC;--biachat-text-muted:#94A3B8;--biachat-border:#1F293D;--biachat-operator-bubble:#172136;--biachat-operator-text:#F1F5F9;--biachat-operator-border:#24314C;--biachat-user-bubble:linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);--biachat-user-text:#FFFFFF;--biachat-input-bg:#0F172A;--biachat-input-border:#1F293D;--biachat-input-text:#F8FAFC;--biachat-chip-bg:#162238;--biachat-chip-border:#223252;--biachat-chip-text:#93C5FD;--biachat-shadow:0 24px 50px -10px rgba(0, 0, 0, 0.75), 0 12px 24px -5px rgba(0, 0, 0, 0.5)}@media (prefers-color-scheme:dark){#biachat-root:not(.biachat-theme-light){--biachat-primary:#2B44FF;--biachat-primary-hover:#4B63FF;--biachat-primary-glow:rgba(43, 68, 255, 0.45);--biachat-bg:#0B101B;--biachat-surface:#131B2E;--biachat-text:#F8FAFC;--biachat-text-muted:#94A3B8;--biachat-border:#1F293D;--biachat-operator-bubble:#172136;--biachat-operator-text:#F1F5F9;--biachat-operator-border:#24314C;--biachat-user-bubble:linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);--biachat-user-text:#FFFFFF;--biachat-input-bg:#0F172A;--biachat-input-border:#1F293D;--biachat-input-text:#F8FAFC;--biachat-chip-bg:#162238;--biachat-chip-border:#223252;--biachat-chip-text:#93C5FD;--biachat-shadow:0 24px 50px -10px rgba(0, 0, 0, 0.75)}}#biachat-root{position:fixed;bottom:24px;left:24px;z-index:9999999;font-family:var(--biachat-font);direction:rtl;text-align:right;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#biachat-root[data-position="right"]{left:auto;right:24px}.biachat-launcher{width:62px;height:62px;border-radius:50%;background:var(--biachat-gradient);box-shadow:0 8px 28px rgba(30,64,216,.45);display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;outline:none;transition:transform 0.28s cubic-bezier(.34,1.56,.64,1),box-shadow 0.28s ease;position:relative;user-select:none}.biachat-launcher:hover{transform:scale(1.08);box-shadow:0 12px 34px rgba(30,64,216,.6)}.biachat-launcher:active{transform:scale(.95)}.biachat-launcher svg{width:28px;height:28px;fill:#FFF;transition:transform 0.3s cubic-bezier(.4,0,.2,1),opacity 0.2s ease}.biachat-launcher .icon-close{display:none;position:absolute}.biachat-open .biachat-launcher .icon-chat{display:none}.biachat-open .biachat-launcher .icon-close{display:block;transform:rotate(90deg)}.biachat-open .biachat-launcher:hover .icon-close{transform:rotate(180deg)}.biachat-badge{position:absolute;top:-4px;right:-4px;background:#EF4444;color:#FFF;font-size:11px;font-weight:700;min-width:22px;height:22px;border-radius:11px;display:flex;align-items:center;justify-content:center;padding:0 6px;box-shadow:0 2px 8px rgba(239,68,68,.55);border:2px solid #FFF;animation:biachatPulse 2s infinite}@keyframes biachatPulse{0%{transform:scale(1)}50%{transform:scale(1.15)}100%{transform:scale(1)}}.biachat-window{position:absolute;bottom:78px;left:0;width:380px;height:600px;max-height:calc(100vh - 110px);background:var(--biachat-bg);border-radius:var(--biachat-radius);box-shadow:var(--biachat-shadow);border:1px solid var(--biachat-border);display:flex;flex-direction:column;overflow:hidden;opacity:0;visibility:hidden;transform:translateY(20px) scale(.96);transform-origin:bottom left;transition:opacity 0.25s cubic-bezier(.16,1,.3,1),transform 0.25s cubic-bezier(.16,1,.3,1),visibility 0.25s,background 0.25s,border-color 0.25s}#biachat-root[data-position="right"] .biachat-window{left:auto;right:0;transform-origin:bottom right}.biachat-open .biachat-window{opacity:1;visibility:visible;transform:translateY(0) scale(1)}.biachat-header{background:var(--biachat-gradient);color:#FFF;padding:16px 18px;display:flex;flex-direction:column;gap:10px;position:relative;box-shadow:0 4px 15px rgba(0,0,0,.08)}.biachat-header-top{display:flex;align-items:center;justify-content:space-between}.biachat-team-avatars{display:flex;align-items:center;position:relative}.biachat-avatar{width:36px;height:36px;border-radius:50%;border:2px solid rgba(255,255,255,.85);background:#1E3A8A;display:flex;align-items:center;justify-content:center;color:#FFF;font-weight:700;font-size:12px;margin-left:-10px;box-shadow:0 2px 6px rgba(0,0,0,.2);overflow:hidden}.biachat-avatar:first-child{margin-left:0}.biachat-avatar img{width:100%;height:100%;object-fit:cover}.biachat-online-dot{position:absolute;bottom:0;right:24px;width:10px;height:10px;border-radius:50%;background:#10B981;border:2px solid #FFF}.biachat-header-actions{display:flex;align-items:center;gap:6px}.biachat-header-btn{background:rgba(255,255,255,.16);border:none;border-radius:8px;width:30px;height:30px;display:flex;align-items:center;justify-content:center;color:#FFF;cursor:pointer;transition:background 0.2s,transform 0.15s}.biachat-header-btn:hover{background:rgba(255,255,255,.28);transform:scale(1.05)}.biachat-header-btn:active{transform:scale(.92)}.biachat-header-info h3{margin:0;font-size:15.5px;font-weight:700;letter-spacing:-.01em}.biachat-header-info p{margin:2px 0 0;font-size:12px;opacity:.92;display:flex;align-items:center;gap:6px}.biachat-status-pulse{width:7px;height:7px;border-radius:50%;background:#34D399;display:inline-block;box-shadow:0 0 8px #34D399}.biachat-body{flex:1;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth;background:var(--biachat-bg);transition:background 0.25s}.biachat-body::-webkit-scrollbar{width:5px}.biachat-body::-webkit-scrollbar-thumb{background:var(--biachat-border);border-radius:4px}.biachat-welcome-card{background:var(--biachat-surface);border:1px solid var(--biachat-border);border-radius:14px;padding:14px 16px;text-align:center;color:var(--biachat-text);margin-bottom:6px;transition:background 0.25s,border-color 0.25s}.biachat-welcome-card h4{margin:0 0 6px;font-size:13.5px;font-weight:700;color:var(--biachat-primary)}.biachat-welcome-card p{margin:0;font-size:12px;color:var(--biachat-text-muted);line-height:1.55}.biachat-msg-row{display:flex;flex-direction:column;max-width:84%;animation:biachatFadeIn 0.2s ease-out}@keyframes biachatFadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.biachat-msg-row.user{align-self:flex-start}.biachat-msg-row.operator{align-self:flex-end}.biachat-msg-author{font-size:11px;color:var(--biachat-text-muted);margin-bottom:4px;padding:0 4px;font-weight:500}.biachat-msg-bubble{padding:10px 14px;border-radius:16px;font-size:13px;line-height:1.6;word-break:break-word;position:relative;box-shadow:0 1px 3px rgba(0,0,0,.05);transition:background 0.2s,border-color 0.2s}.biachat-msg-row.user .biachat-msg-bubble{background:var(--biachat-user-bubble);color:var(--biachat-user-text);border-bottom-right-radius:4px}.biachat-msg-row.operator .biachat-msg-bubble{background:var(--biachat-operator-bubble);color:var(--biachat-operator-text);border:1px solid var(--biachat-operator-border);border-bottom-left-radius:4px}.biachat-msg-meta{display:flex;align-items:center;gap:4px;font-size:10px;margin-top:4px;opacity:.75}.biachat-msg-row.user .biachat-msg-meta{color:rgba(255,255,255,.85);justify-content:flex-end}.biachat-msg-row.operator .biachat-msg-meta{color:var(--biachat-text-muted)}.biachat-typing{display:none;align-self:flex-end;background:var(--biachat-operator-bubble);border:1px solid var(--biachat-operator-border);padding:8px 14px;border-radius:14px;border-bottom-left-radius:4px;gap:4px;align-items:center}.biachat-typing.active{display:flex}.biachat-typing-dot{width:6px;height:6px;border-radius:50%;background:var(--biachat-text-muted);animation:biachatBlink 1.4s infinite both}.biachat-typing-dot:nth-child(2){animation-delay:0.2s}.biachat-typing-dot:nth-child(3){animation-delay:0.4s}@keyframes biachatBlink{0%,80%,100%{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1.1)}}.biachat-chips{display:flex;gap:6px;overflow-x:auto;padding:0 16px 8px;white-space:nowrap}.biachat-chips::-webkit-scrollbar{display:none}.biachat-chip{background:var(--biachat-chip-bg);border:1px solid var(--biachat-chip-border);color:var(--biachat-chip-text);font-size:11.5px;font-weight:500;padding:6px 12px;border-radius:20px;cursor:pointer;transition:all 0.2s;user-select:none}.biachat-chip:hover{background:var(--biachat-primary);color:#FFF;border-color:var(--biachat-primary);transform:translateY(-1px)}.biachat-footer{border-top:1px solid var(--biachat-border);padding:12px 16px;background:var(--biachat-bg);display:flex;flex-direction:column;gap:8px;transition:background 0.25s,border-color 0.25s}.biachat-input-box{display:flex;align-items:center;background:var(--biachat-input-bg);border:1px solid var(--biachat-input-border);border-radius:24px;padding:4px 6px 4px 12px;transition:border-color 0.2s,box-shadow 0.2s,background 0.25s}.biachat-input-box:focus-within{border-color:var(--biachat-primary);box-shadow:0 0 0 3px var(--biachat-primary-glow)}.biachat-textarea{flex:1;background:transparent;border:none;outline:none;font-family:inherit;font-size:13px;color:var(--biachat-input-text);resize:none;height:24px;max-height:80px;line-height:24px;padding:0;direction:rtl}.biachat-textarea::placeholder{color:var(--biachat-text-muted)}.biachat-send-btn{width:32px;height:32px;border-radius:50%;background:var(--biachat-primary);border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;color:#FFF;transition:background 0.2s,transform 0.15s;flex-shrink:0}.biachat-send-btn:hover{background:var(--biachat-primary-hover);transform:scale(1.06)}.biachat-send-btn:active{transform:scale(.92)}.biachat-send-btn svg{width:16px;height:16px;fill:currentColor;transform:scaleX(-1)}.biachat-branding{text-align:center;font-size:10.5px;color:var(--biachat-text-muted);margin-top:2px}.biachat-branding a{color:var(--biachat-primary);text-decoration:none;font-weight:600}@media (max-width:640px){#biachat-root{bottom:16px;left:16px}#biachat-root[data-position="right"]{right:16px}.biachat-window{position:fixed;top:0;left:0!important;right:0!important;bottom:0!important;width:100%!important;height:100%!important;max-height:100vh!important;border-radius:0!important;border:none!important;transform-origin:center bottom!important}.biachat-header{padding-top:max(16px, env(safe-area-inset-top))}.biachat-footer{padding-bottom:max(12px, env(safe-area-inset-bottom))}}