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.av-ring--ccw{stroke:var(--amber);opacity:.7}.av-bar{transform-origin:center bottom;transform-box:fill-box;opacity:.5;transform:scaleY(.18);transition:opacity .2s}.android-av--speaking .av-bar{opacity:1;animation:av-bar-bounce .45s ease-in-out infinite alternate}.android-av--speaking .av-bar--1{animation-delay:0s}.android-av--speaking .av-bar--2{animation-delay:.08s}.android-av--speaking .av-bar--3{animation-delay:.16s}.android-av--speaking .av-bar--4{animation-delay:.08s}.android-av--speaking .av-bar--5{animation-delay:0s}@keyframes av-bar-bounce{0%{transform:scaleY(.15)}50%{transform:scaleY(1)}to{transform:scaleY(.4)}}.android-av--listening .av-bar{opacity:.65;animation:av-bar-listen 1.6s ease-in-out infinite alternate}.android-av--listening .av-bar--1{animation-delay:0s}.android-av--listening .av-bar--2{animation-delay:.3s}.android-av--listening .av-bar--3{animation-delay:.6s}.android-av--listening .av-bar--4{animation-delay:.3s}.android-av--listening .av-bar--5{animation-delay:0s}@keyframes av-bar-listen{0%{transform:scaleY(.18)}to{transform:scaleY(.45)}}@keyframes av-float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.android-av--speaking{animation:av-float 2s ease-in-out infinite;filter:drop-shadow(0 0 18px rgba(255,107,0,.45))}.android-av--listening{filter:drop-shadow(0 0 12px rgba(251,191,36,.4))}.av-status{transition:fill .4s}.android-av--speaking .av-status{filter:drop-shadow(0 0 4px #22c55e)}.android-av--listening .av-status{filter:drop-shadow(0 0 4px var(--amber))}.ai-teacher-label{display:flex;flex-direction:column;align-items:center;gap:.2rem;position:relative;z-index:1}.ai-teacher-name{font-size:.9rem;font-weight:600;color:var(--text);letter-spacing:.5px}.ai-teacher-badge{font-size:.65rem;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:#ff6b00cc;background:#ff6b000f;border:1px solid rgba(255,107,0,.18);border-radius:3px;padding:2px 8px;transition:color .3s,border-color .3s}.ai-teacher-tile--speaking .ai-teacher-badge{color:var(--ok);border-color:#4ade804d}.ai-teacher-tile--listening .ai-teacher-badge{color:var(--amber);border-color:#fbbf244d}.sidebar{width:340px;min-width:0;max-width:340px;border-left:1px solid var(--border);background:var(--bg-2);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);display:flex;flex-direction:column;min-height:0;overflow:hidden}.sidebar-tabs{display:flex;align-items:center;gap:.2rem;padding:.45rem;border-bottom:1px solid var(--border)}.tab{background:transparent;border:none;color:var(--muted);padding:.45rem .65rem;border-radius:7px;cursor:pointer;font-weight:600;font-size:.85rem;font-family:var(--font-body);transition:color .15s,background .15s}.tab.active{background:#ff6b001a;color:var(--primary);box-shadow:inset 0 0 0 1px #ff6b0033}.tab-close{margin-left:auto;background:transparent;border:none;color:var(--muted);cursor:pointer;font-size:1rem;padding:.3rem .5rem;transition:color .15s}.tab-close:hover{color:var(--text)}.sidebar-content{flex:1;min-height:0;display:flex;flex-direction:column}.sidebar-content .lk-chat{flex:1;min-height:0;width:100%!important;max-width:100%!important;background:transparent;border:none;box-sizing:border-box}.sidebar-content .lk-chat-messages{min-width:0;overflow-x:hidden}.sidebar-content .lk-chat-form{max-height:none;min-width:0}.sidebar-content .lk-chat-form-input{min-width:0;width:100%;box-sizing:border-box}.people{padding:.8rem;overflow-y:auto}.people>.btn{margin-bottom:.8rem}.people-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.4rem}.person{display:flex;align-items:center;gap:.5rem;padding:.5rem .6rem;border:1px solid var(--border);border-radius:var(--radius);background:#0c203599;transition:border-color 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