:root{--accent:#7354d2;--navy:#243b80}.conversation-preview{border:1px solid #e2ddf5;border-radius:32px;background:#ffffffb8;padding:40px;text-align:center;box-shadow:0 30px 80px #7354d21a}.ai-tag{display:inline-block;color:#7354d2;background:#eee9ff;border-radius:99px;padding:6px 14px;font-size:13px;font-weight:700}.voice-orb{display:grid;place-items:center;width:170px;height:170px;margin:30px auto;color:white;border-radius:50%;background:radial-gradient(circle at 30% 25%,#bbaaff,#7354d2 55%,#243b80);box-shadow:0 0 0 14px #7354d212,0 0 0 30px #7354d20a;font-size:62px}.voice-orb.small{width:140px;height:140px}.preview-bubble{text-align:left;border-radius:18px;padding:15px 20px;background:#f0ebff;margin:15px 0;font-size:16px}.preview-bubble.learner{background:#e8f9f7;margin-left:35px}.conversation-preview small{font-size:12px;color:#686d78}.sound-wave{display:flex;align-items:center;justify-content:center;gap:6px;height:44px;margin:25px 0}.sound-wave i{display:block;width:5px;height:18px;background:#7354d2;border-radius:9px;animation:wave 1.4s infinite}.sound-wave i:nth-child(2n){animation-delay:.3s;height:34px}.sound-wave i:nth-child(3n){animation-delay:.6s;height:28px}@keyframes wave{50%{transform:scaleY(.5)}}.speak-panel{background:#f5f7fc;font-family:Arial,sans-serif;font-size:15px}.student-sidebar{position:fixed;inset:0 auto 0 0;width:245px;background:white;border-right:1px solid #e1e5ee;padding:28px 18px;z-index:50}.student-sidebar>a img{width:190px}.sidebar-label{display:block;font-size:10px;font-weight:700;color:#8993a5;margin:27px 12px 15px;letter-spacing:1px}.student-sidebar nav{display:grid;gap:6px}.student-sidebar nav a{display:flex;gap:13px;align-items:center;border-radius:12px;padding:13px 14px;font-weight:600;color:#54627c;font-size:14px}.student-sidebar nav a i{width:18px;color:#7354d2}.student-sidebar nav a.active{background:#eee9ff;color:#7354d2}.student-sidebar nav a:hover{background:#f5f2fd}.logout{border:1px solid #e3e5ed;background:white;color:#6d7482;border-radius:10px;padding:10px 16px;margin:30px 12px}.student-main{margin-left:245px}.student-topbar{height:75px;background:white;border-bottom:1px solid #e1e5ee;padding:0 35px;display:flex;gap:15px;align-items:center}.student-topbar>span{margin-left:auto}.student-topbar button{display:none}.student-content{max-width:1350px;margin:auto;padding:40px}.student-content h1{font-size:32px;letter-spacing:-1px}.student-content h2{font-size:32px}.student-content h3{font-size:20px}.student-content .eyebrow{font-size:12px}.welcome{display:flex;justify-content:space-between;align-items:center;gap:35px;padding:35px 45px;background:linear-gradient(120deg,#7354d2,#243b80);border-radius:22px;color:white;margin-bottom:25px}.welcome p{color:#e2dcfa}.welcome h2{font-size:36px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:25px 0}.stats article{background:white;border:1px solid #e3e6ef;border-radius:15px;padding:23px}.stats b{display:block;color:#7354d2;font-size:32px}.stats span{color:#747d8f;font-size:13px}.panel-card{padding:28px;border:1px solid #e2e6ef;border-radius:18px;background:white;margin-bottom:22px}.panel-card p{font-size:15px}.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.plan-grid>.panel-card{margin:0}.plan-step{transition:transform .2s}.plan-step:hover{transform:translateY(-4px)}.plan-step b{color:#7354d2}.student-footer{text-align:center;padding:25px;color:#8992a2;font-size:12px}.profile-form{max-width:650px;display:grid;gap:18px}.profile-form label{display:grid;gap:7px;font-weight:600}.profile-form input,.profile-form select,.topic-label select,#voiceText{padding:12px;border:1px solid #dce1ec;border-radius:10px;background:white;font-size:15px;width:100%;color:#243b80}.profile-form .pill{justify-self:start}.form-message{color:#a32b35;font-size:14px;white-space:pre-wrap}.form-message:empty{display:none}.history-card summary{flex-wrap:wrap;align-items:center;line-height:1.6}.history-card small{color:#778094;font-size:12px}.history-turns{max-height:350px;overflow:auto;background:#f6f7fc;border-radius:12px;padding:16px;margin-top:20px}.voice-room{background:white;border:1px solid #e2e6ef;border-radius:24px;padding:30px}.voice-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:30px}.voice-stage{text-align:center;background:radial-gradient(ellipse at center,#f1ecff,transparent 70%);padding:18px}.voice-stage h2{font-size:25px}.voice-stage #voiceTimer{display:block;font-size:22px;color:#7354d2;font-variant-numeric:tabular-nums}.topic-label{display:block;text-align:left;font-weight:600;margin:20px 0 15px}.topic-label select{display:block;margin-top:8px}.voice-consent{display:flex;text-align:left;align-items:flex-start;gap:9px;font-size:12px;color:#677184;margin:20px 0}.voice-consent input{margin-top:4px;accent-color:#7354d2}.voice-controls{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.voice-controls .pill{padding:12px 17px;font-size:13px;cursor:pointer}.voice-help{font-size:12px;margin:20px 0}.transcript-side{display:flex;flex-direction:column;min-height:520px;border-left:1px solid #e3e6ef;padding-left:30px}.transcript-side h3{font-size:20px}#voiceTranscript{height:410px;overflow:auto;flex:1;background:#f7f8fc;border-radius:16px;padding:18px}.turn{font-size:14px;line-height:1.65;padding:13px;background:#eee9ff;border-radius:12px;color:#37415a;margin-bottom:12px}.turn.user{background:#e4f5f3;margin-left:20px}.turn.assistant{margin-right:20px}#voiceTextForm label{font-size:12px;display:block;margin-top:15px;color:#778094}#voiceTextForm>div{display:flex;gap:8px}#voiceTextForm button{border:0;border-radius:10px;background:#7354d2;color:white;padding:0 14px;font-size:23px}button:disabled{opacity:.5;cursor:not-allowed}#voiceFeedback{border-top:1px solid #e3e6ef;margin-top:30px;padding:30px 10px}#voiceFeedback small{display:block;margin-bottom:20px}#voiceFeedback .pill{margin-top:20px}.talking .voice-orb{animation:pulse 1s infinite}.listening .voice-orb{box-shadow:0 0 0 14px #19b6b225,0 0 0 30px #19b6b210}@keyframes pulse{50%{transform:scale(1.06)}}[hidden]{display:none!important}.login-shell>.admin-login-card{margin:auto}.ling-auth .form-grup{display:block}.ling-auth .form-input{display:block}.ling-auth .login-platform-title{line-height:2}.ling-auth .login-platform-title img{margin-bottom:15px}
@media(max-width:1100px){.voice-layout{grid-template-columns:1fr}.transcript-side{border-left:0;border-top:1px solid #e3e6ef;padding:25px 0 0;min-height:350px}#voiceTranscript{flex:auto;max-height:320px}.plan-grid{grid-template-columns:1fr 1fr}.student-content{padding:25px}}
@media(max-width:780px){.student-sidebar{transform:translateX(-100%);transition:transform .2s;width:245px;box-shadow:12px 0 50px #243b8022;top:75px}.sidebar-open .student-sidebar{transform:translateX(0)}.student-main{margin-left:0}.student-topbar{padding:0 18px;position:sticky;top:0;z-index:60}.student-topbar>span{font-size:12px}.student-topbar button{display:block;border:0;background:#eee9ff;padding:9px;border-radius:8px;color:#7354d2}.student-content{padding:24px 18px}.student-content h1{font-size:26px}.welcome{padding:25px;gap:15px}.welcome h2{font-size:27px}.welcome .voice-orb{display:none}.stats{gap:10px}.stats article{padding:15px 10px}.stats b{font-size:25px}.stats span{font-size:11px}.plan-grid{grid-template-columns:1fr}.panel-card{padding:22px}.voice-room{padding:16px}.voice-stage{padding:10px}.voice-orb{width:140px;height:140px;font-size:50px}.voice-stage h2{font-size:23px}.conversation-preview{padding:27px}.speak-panel .pill{font-size:14px}.hero h1{font-size:40px}.history-turns p{overflow-wrap:anywhere}}
@media(prefers-reduced-motion:reduce){.sound-wave i,.voice-orb{animation:none!important}}

.activation-note{padding:14px 24px;background:#eee8ff;color:#49348a;text-align:center;font-size:14px;border-radius:12px;margin:12px auto;max-width:1100px;}