@font-face{font-family:Pinzelan;src:url('../pinzelan-cyrillic.otf') format('opentype');font-display:swap}
:root{color-scheme:dark}
html,body{min-height:100%;height:100%;overflow:hidden}
body.teacher-chat-page{margin:0;background:radial-gradient(ellipse at 18% 0%,rgba(124,92,255,.12),transparent 48%),radial-gradient(ellipse at 92% 100%,rgba(255,154,46,.09),transparent 42%),var(--bg-app);font-family:var(--font-study-kid);color:var(--text-primary)}
button,a,textarea{font:inherit}
button{color:inherit}
.chat-shell{height:100dvh;max-width:1680px;margin:0 auto;padding:clamp(10px,1.5vw,22px);display:flex;flex-direction:column;gap:14px}
.chat-header{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:10px 16px;background:rgba(26,15,46,.92);border:1px solid var(--border-subtle);border-radius:22px;box-shadow:var(--glow-soft)}
.teacher-brand{display:flex;align-items:center;gap:12px;min-width:0;color:inherit;text-decoration:none}
.teacher-avatar,.status-avatar{display:grid;place-items:center;flex:none;border:2px solid var(--amber-500);border-radius:50%;background:var(--bg-elevated)}
.teacher-avatar{width:43px;height:43px;font-size:22px}.brand-copy{display:grid;gap:1px;min-width:0}.brand-copy strong{font-family:var(--font-game);font-size:clamp(18px,2vw,26px);font-weight:600;color:var(--amber-300);line-height:1.2}.brand-copy small{font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}.control-pill,.icon-control,.round-control,.panel-close{border:1px solid var(--border-strong);background:rgba(36,22,64,.82);color:var(--text-secondary);cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease}.control-pill{min-height:42px;display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:0 14px;border-radius:999px;text-decoration:none;white-space:nowrap}.control-pill:hover,.icon-control:hover,.round-control:hover,.panel-close:hover{border-color:var(--amber-500);color:var(--text-primary);background:var(--bg-elevated)}.control-pill:active,.round-control:active{transform:scale(.98)}button:disabled{opacity:.45;cursor:not-allowed}.count-badge{min-width:20px;height:20px;padding:0 5px;display:inline-grid;place-items:center;border-radius:99px;background:var(--bg-surface);font-size:11px;color:var(--amber-300)}
.chat-layout{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:14px}.conversation-card,.related-panel{min-height:0;background:rgba(26,15,46,.94);border:1px solid var(--border-subtle);border-radius:24px;box-shadow:var(--glow-soft)}.conversation-card{display:flex;flex-direction:column;overflow:hidden}.conversation-meta{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 18px;border-bottom:1px solid var(--border-subtle)}.tutor-status{display:flex;align-items:center;gap:11px;min-width:0}.status-avatar{width:40px;height:40px;font-size:19px}.tutor-status>span:last-child{display:grid;gap:1px}.tutor-status strong{font-size:16px}.tutor-status small{font-size:12px;color:var(--color-success)}.meta-actions{display:flex;align-items:center;gap:8px}.topic-chip{max-width:260px;padding:6px 10px;border:1px solid var(--border-subtle);border-radius:999px;background:var(--bg-elevated);font-size:12px;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.icon-control{width:40px;height:40px;border-radius:50%;font-size:19px}.icon-control:hover{color:var(--color-error)}
.message-list{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:clamp(18px,3vw,34px);display:flex;flex-direction:column;gap:16px;scrollbar-color:var(--ink-500) transparent}.message{width:fit-content;max-width:min(78%,820px);padding:13px 17px;border:1px solid var(--border-subtle);border-radius:19px;background:var(--bg-elevated);color:var(--text-primary);font-size:clamp(15px,1.3vw,18px);line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere;animation:message-in .2s ease-out}.message.teacher{align-self:flex-start;border-top-left-radius:7px}.message.child{align-self:flex-end;border-color:transparent;border-bottom-right-radius:7px;background:linear-gradient(140deg,var(--amber-400),var(--amber-500));color:var(--text-on-amber)}.message-label{display:block;margin-bottom:4px;color:var(--text-muted);font-size:10px;letter-spacing:.08em;text-transform:uppercase}.message.child .message-label{color:rgba(26,15,46,.7)}.message.error-message{border-color:rgba(232,106,106,.35)}.loading-state,.empty-state{margin:auto;display:flex;align-items:center;justify-content:center;gap:10px;color:var(--text-secondary);text-align:center}.loading-orb,.empty-orb{width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--border-strong);border-radius:50%;color:var(--amber-300);animation:glow 1.5s ease-in-out infinite}.empty-state{max-width:420px;flex-direction:column;padding:24px}.empty-state p{margin:0;color:var(--text-primary)}.empty-state small{color:var(--text-secondary)}
.reply-suggestions{display:flex;gap:8px;flex-wrap:wrap;padding:0 20px 12px}.reply-chip{min-height:36px;padding:6px 13px;border:1px solid var(--border-strong);border-radius:999px;background:transparent;color:var(--text-secondary);cursor:pointer}.reply-chip:hover{border-color:var(--amber-500);color:var(--amber-200);background:var(--bg-elevated)}
.attachment-tray{max-height:205px;overflow:auto;padding:10px 18px;border-top:1px solid var(--border-subtle);display:grid;gap:9px}.attachment-card{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:10px;align-items:start;padding:10px;border:1px solid var(--border-strong);border-radius:14px;background:var(--bg-elevated)}.attachment-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:10px;background:var(--bg-surface);font-size:19px}.attachment-body{min-width:0}.attachment-title{display:flex;justify-content:space-between;gap:8px;font-size:13px;font-weight:600}.attachment-body textarea{width:100%;min-height:54px;margin-top:6px;padding:8px;border:1px solid var(--border-subtle);border-radius:9px;background:var(--ink-900);color:var(--text-primary);resize:vertical;font-size:13px;line-height:1.4}.attachment-actions{display:flex;gap:6px}.mini-button{min-height:32px;padding:4px 9px;border:1px solid var(--border-strong);border-radius:9px;background:transparent;color:var(--text-secondary);cursor:pointer;font-size:12px}.mini-button.confirm{border-color:var(--amber-500);color:var(--amber-200)}.mini-button.remove{padding:0 9px}.attachment-warning{margin:4px 0 0;color:var(--text-secondary);font-size:11px}
.attachment-preview{display:block;width:100%;height:100%;object-fit:cover;border-radius:8px}
.composer{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:end;gap:10px;margin:0;padding:14px 18px 9px;border-top:1px solid var(--border-subtle);background:linear-gradient(180deg,rgba(26,15,46,.92),rgba(19,10,38,.98))}.composer-tools{display:flex;gap:7px;padding-bottom:4px}.round-control{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;font-size:20px}.mic-control{font-size:17px}.mic-control.is-listening{border-color:var(--color-error);color:var(--color-error);animation:mic-pulse 1.2s infinite}.composer textarea{width:100%;min-height:48px;max-height:160px;resize:none;padding:12px 14px;border:1px solid var(--border-strong);border-radius:15px;background:var(--ink-900);color:var(--text-primary);font-size:16px;line-height:1.45;outline:none}.composer textarea::placeholder{color:var(--text-muted)}.composer textarea:focus{border-color:var(--magic-300);box-shadow:0 0 0 2px rgba(124,92,255,.22)}.send-button{min-width:112px;height:48px;display:flex;align-items:center;justify-content:center;gap:10px;padding:0 16px;border:0;border-radius:14px;background:linear-gradient(180deg,#ffb13d,var(--amber-500));color:var(--text-on-amber);font-weight:700;cursor:pointer;box-shadow:0 4px 14px rgba(255,140,26,.18)}.send-button:hover{filter:brightness(1.08)}.send-button span:last-child{font-size:18px}.composer-status{grid-column:2/4;min-height:16px;padding-left:4px;color:var(--text-secondary);font-size:11px}.privacy-note{margin:0;padding:0 18px 12px;color:var(--text-muted);font-size:10px;text-align:center}
.related-panel{padding:19px 17px;overflow-y:auto}.related-heading{display:flex;align-items:center;justify-content:space-between}.eyebrow{font-size:10px;font-weight:700;letter-spacing:.16em;color:var(--amber-300)}.panel-close{display:none;width:32px;height:32px;border-radius:50%;font-size:20px}.related-panel h2{margin:14px 0 3px;font-family:var(--font-game);font-size:23px;line-height:1.2;color:var(--amber-200)}.related-intro{margin:0 0 18px;color:var(--text-secondary);font-size:13px;line-height:1.5}.related-content{display:grid;gap:10px}.related-empty{padding:18px 12px;border:1px dashed var(--border-strong);border-radius:16px;text-align:center;color:var(--text-secondary)}.related-empty span{color:var(--amber-300);font-size:22px}.related-empty p{margin:5px 0 0;font-size:13px}.related-item{padding:13px;border:1px solid var(--border-subtle);border-radius:15px;background:var(--bg-elevated)}.related-item h3{margin:0 0 5px;font-size:15px;color:var(--text-primary)}.related-item p{margin:0 0 10px;color:var(--text-secondary);font-size:12px;line-height:1.45}.related-source{display:block;margin-bottom:9px;color:var(--text-muted);font-size:10px}.related-action{width:100%;min-height:34px;border:1px solid var(--border-strong);border-radius:10px;background:transparent;color:var(--amber-200);cursor:pointer;font-size:12px}.related-action:hover{background:var(--bg-surface)}.panel-scrim{display:none}.toast{position:fixed;left:50%;bottom:24px;z-index:10;max-width:min(90vw,520px);padding:11px 16px;border:1px solid var(--border-strong);border-radius:14px;background:var(--bg-elevated);box-shadow:var(--glow-soft);color:var(--text-primary);opacity:0;pointer-events:none;transform:translate(-50%,8px);transition:all .2s ease}.toast.visible{opacity:1;transform:translate(-50%,0)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--magic-300);outline-offset:3px}
.message-photo-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:9px}.message-photo{display:block;max-width:min(360px,100%);max-height:260px;border:1px solid var(--border-strong);border-radius:12px;object-fit:contain;background:var(--bg-surface)}.message-attachment-note{display:block;margin-top:8px;color:var(--text-secondary);font-size:12px}
.message-text{display:block;white-space:normal}.message.child .message-text{white-space:pre-wrap}.message-text p{margin:0}.message-text p+p{margin-top:.75em}.message-text h3,.message-text h4,.message-text h5{margin:0 0 .45em;color:var(--amber-200);font-family:var(--font-study-kid);font-size:1.05em;line-height:1.35}.message-text ul,.message-text ol{margin:.45em 0;padding-left:1.45em}.message-text li+li{margin-top:.25em}.message-text strong{color:var(--amber-200);font-weight:750}.message-text em{color:var(--text-primary);font-style:italic}.message-text code{padding:.08em .35em;border:1px solid var(--border-subtle);border-radius:5px;background:var(--ink-900);color:var(--amber-200);font-family:ui-monospace,monospace;font-size:.9em}
@keyframes message-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes glow{50%{box-shadow:0 0 16px rgba(255,179,71,.28)}}@keyframes mic-pulse{50%{box-shadow:0 0 0 5px rgba(232,106,106,.12)}}
@media(max-width:1050px){.chat-layout{grid-template-columns:minmax(0,1fr) 270px}.chat-shell{padding:10px}.chat-header{padding:9px 12px}.control-pill{min-height:38px;padding:0 10px;font-size:13px}.conversation-meta{min-height:64px}}
@media(max-width:760px){html,body{height:100%;height:100dvh}.chat-shell{height:100dvh;padding:0;gap:0}.chat-header{min-height:58px;padding:7px 10px;border-radius:0;border-left:0;border-right:0;border-top:0;gap:6px}.teacher-avatar{width:37px;height:37px;font-size:19px}.brand-copy strong{font-size:18px}.brand-copy small{max-width:160px;font-size:10px}.header-actions{gap:5px}.control-pill{min-height:35px;padding:0 8px;font-size:11px}.exit-link{display:none}.related-toggle{order:4}.chat-layout{position:relative;display:block;min-height:0}.conversation-card{height:100%;border-radius:0;border:0}.conversation-meta{min-height:56px;padding:8px 12px}.status-avatar{width:34px;height:34px;font-size:16px}.tutor-status strong{font-size:14px}.tutor-status small{font-size:11px}.topic-chip{max-width:140px;font-size:10px}.icon-control{width:34px;height:34px}.message-list{padding:18px 13px;gap:12px}.message{max-width:88%;padding:11px 13px;border-radius:16px;font-size:16px}.reply-suggestions{padding:0 12px 9px;gap:6px}.reply-chip{min-height:32px;padding:5px 10px;font-size:12px}.composer{grid-template-columns:auto minmax(0,1fr) auto;gap:7px;padding:9px 10px 5px;padding-bottom:max(5px,env(safe-area-inset-bottom));}.composer-tools{gap:5px}.round-control{width:37px;height:37px;font-size:18px}.composer textarea{min-height:43px;padding:10px 11px;font-size:16px}.send-button{min-width:48px;width:48px;height:43px;padding:0;border-radius:13px}.send-button span:first-child{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.send-button span:last-child{font-size:23px}.composer-status{grid-column:1/4;padding-left:1px}.privacy-note{padding:0 10px 5px;font-size:9px}.related-panel{position:fixed;z-index:8;top:0;right:0;bottom:0;width:min(88vw,370px);padding:calc(17px + env(safe-area-inset-top)) 16px calc(18px + env(safe-area-inset-bottom));border-radius:22px 0 0 22px;border-right:0;transform:translateX(105%);transition:transform .24s ease;box-shadow:-12px 0 30px rgba(0,0,0,.25)}.related-panel.open{transform:translateX(0)}.panel-close{display:block}.panel-scrim.show{display:block;position:fixed;z-index:7;inset:0;background:var(--bg-overlay)}.attachment-tray{max-height:160px;padding:8px 10px}.attachment-card{grid-template-columns:35px minmax(0,1fr) auto;gap:7px;padding:8px}.attachment-icon{width:34px;height:34px}.attachment-body textarea{min-height:45px}}
@media(max-width:390px){.brand-copy small{max-width:128px}.header-actions .control-pill{font-size:10px;padding:0 7px}.round-control{width:34px;height:34px}.composer{gap:5px;padding-left:7px;padding-right:7px}.send-button{min-width:42px;width:42px}.privacy-note{font-size:8px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}