:root,[data-theme=dark]{--bg-app: #0e1621;--bg-sidebar: #17212b;--bg-header: #17212b;--bg-elevated: #242f3d;--bg-chat: #0e1621;--bg-input: #242f3d;--bg-hover: #202b36;--bg-active: #2b5278;--bubble-in: #182533;--bubble-out: #2b5278;--accent: #3390ec;--accent-hover: #4ea4f6;--accent-pressed: #2a7fd4;--text: #f5f5f5;--text-muted: #7d8b99;--text-link: #6ab2f2;--border: #0e1621;--border-subtle: #242f3d;--danger: #e53935;--danger-bg: rgba(229, 57, 53, .15);--warn-bg: rgba(232, 168, 56, .15);--warn-text: #e8a838;--warn-border: rgba(232, 168, 56, .4);--ok: #6ab2f2;--ok-bg: rgba(43, 82, 120, .35);--checks: #6ab2f2;--info-bg: rgba(51, 144, 236, .15);--info-text: #6ab2f2;--info-border: rgba(51, 144, 236, .35);--shadow: 0 1px 2px rgba(0, 0, 0, .25);--radius: 12px;--radius-sm: 8px;--radius-pill: 20px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;color-scheme:dark}[data-theme=light]{--bg-app: #ffffff;--bg-sidebar: #ffffff;--bg-header: #ffffff;--bg-elevated: #f4f4f5;--bg-chat: #e6ebee;--bg-input: #f4f4f5;--bg-hover: #f4f4f5;--bg-active: #e7f0fa;--bubble-in: #ffffff;--bubble-out: #eeffde;--accent: #3390ec;--accent-hover: #4ea4f6;--accent-pressed: #2a7fd4;--text: #000000;--text-muted: #707579;--text-link: #3390ec;--border: #e7e7e7;--border-subtle: #e7e7e7;--danger: #d32f2f;--danger-bg: #fdecea;--warn-bg: #fff8e1;--warn-text: #5c4800;--warn-border: #e0c36a;--ok: #1f6b4a;--ok-bg: #e8f5e9;--checks: #62ac34;--info-bg: #eff6ff;--info-text: #1e40af;--info-border: #93c5fd;--shadow: 0 1px 1px rgba(0, 0, 0, .06);color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{height:100%;height:-webkit-fill-available}html,body,#root{height:100%;margin:0}body{min-height:100%;min-height:100dvh;min-height:-webkit-fill-available;font-family:var(--font);background:var(--bg-app);color:var(--text);transition:background-color .2s ease,color .2s ease;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;text-size-adjust:100%;-webkit-text-size-adjust:100%;overscroll-behavior:none}#root{min-height:100%;min-height:100dvh;min-height:-webkit-fill-available;display:flex;flex-direction:column}a{color:var(--text-link);text-decoration:none}a:hover{text-decoration:underline}button,input,textarea,select{font:inherit}.sc-page{min-height:100%;min-height:100dvh;background:var(--bg-app);color:var(--text);width:100%;overflow-x:hidden}.sc-auth{flex:1;min-height:100%;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;position:relative;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:max(4.5rem,calc(env(safe-area-inset-top,0px) + 3.25rem)) max(1rem,env(safe-area-inset-right,0px)) max(2rem,env(safe-area-inset-bottom,0px)) max(1rem,env(safe-area-inset-left,0px));background:radial-gradient(ellipse at 50% -20%,rgba(51,144,236,.12),transparent 55%),var(--bg-app)}@media(min-height:720px){.sc-auth{justify-content:center;padding-top:max(1.25rem,env(safe-area-inset-top,0px))}}.sc-auth-card{width:100%;max-width:420px}.sc-auth-top{position:absolute;top:max(.75rem,env(safe-area-inset-top,0px));right:max(.75rem,env(safe-area-inset-right,0px));z-index:2}.sc-panel{max-width:640px;margin:0 auto;padding:1rem max(1rem,env(safe-area-inset-right,0px)) max(2rem,env(safe-area-inset-bottom,0px)) max(1rem,env(safe-area-inset-left,0px));min-height:100%;min-height:100dvh;width:100%}.sc-btn.sc-btn-block,a.sc-btn.sc-btn-block{width:100%;display:flex}a.sc-btn{text-decoration:none;color:inherit}a.sc-btn:hover{text-decoration:none}a.sc-btn-primary{color:#fff}.sc-title{margin:0 0 .75rem;font-size:1.5rem;font-weight:700;letter-spacing:-.02em}.sc-title-sm{margin:0;font-size:1.05rem;font-weight:600;flex:1}.sc-subtitle{margin:0 0 .5rem;font-size:1.1rem;font-weight:600}.sc-muted{color:var(--text-muted);font-size:.9rem;line-height:1.45;margin:0 0 1rem}.sc-error{color:var(--danger);margin:0;font-size:.9rem}.sc-ok{color:var(--ok);margin:0}.sc-banner-info{background:var(--info-bg);border:1px solid var(--info-border);color:var(--info-text);padding:.55rem .75rem;border-radius:var(--radius-sm);margin-bottom:.75rem;font-size:.9rem}.sc-banner-warn{background:var(--warn-bg);border:1px solid var(--warn-border);color:var(--warn-text);padding:.65rem .75rem;border-radius:var(--radius-sm);font-size:.85rem}.sc-box{padding:.75rem;background:var(--ok-bg);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);display:grid;gap:6px;margin:.75rem 0}.sc-mono{word-break:break-all;font-size:.8rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.sc-form{display:flex;flex-direction:column;gap:.75rem;margin:1rem 0}.sc-label{display:flex;flex-direction:column;gap:.35rem;font-size:.9rem}.sc-input,.sc-textarea{padding:.7rem .95rem;font-size:16px;line-height:1.35;border:1px solid var(--border-subtle);border-radius:var(--radius-pill);background:var(--bg-input);color:var(--text);outline:none;width:100%;max-width:100%;transition:border-color .15s ease,background-color .2s ease;-moz-appearance:none;appearance:none;-webkit-appearance:none}.sc-input:focus,.sc-textarea:focus{border-color:var(--accent)}.sc-input:disabled,.sc-textarea:disabled{opacity:.6}.sc-textarea{border-radius:var(--radius);min-height:5rem;resize:vertical}.sc-btn{display:inline-flex;align-items:center;justify-content:center;gap:.35rem;min-height:44px;padding:.7rem 1.15rem;border-radius:var(--radius-pill);border:none;cursor:pointer;font-weight:600;font-size:.95rem;touch-action:manipulation;user-select:none;-webkit-user-select:none;transition:background-color .15s ease,transform .1s ease,opacity .15s ease}.sc-btn:disabled{opacity:.5;cursor:not-allowed}.sc-btn:active:not(:disabled){transform:scale(.98)}.sc-btn-primary{background:var(--accent);color:#fff}.sc-btn-primary:hover:not(:disabled){background:var(--accent-hover)}.sc-btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border-subtle)}.sc-btn-ghost:hover:not(:disabled){background:var(--bg-hover)}.sc-btn-danger{background:var(--danger);color:#fff}.sc-btn-icon{width:44px;height:44px;min-width:44px;min-height:44px;padding:0;border-radius:50%;background:var(--bg-elevated);color:var(--text);border:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:1.05rem;touch-action:manipulation;flex-shrink:0;text-decoration:none}.sc-btn-icon:hover{background:var(--bg-hover);text-decoration:none}a.sc-btn-icon{color:var(--text)}.sc-btn-send{width:44px;height:44px;min-width:44px;min-height:44px;padding:0;border-radius:50%;background:var(--accent);color:#fff;border:none;cursor:pointer;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;font-size:1.15rem;touch-action:manipulation;transition:transform .1s ease,background-color .15s ease}.sc-btn-send:hover:not(:disabled){background:var(--accent-hover)}.sc-btn-send:active:not(:disabled){transform:scale(.96)}.sc-btn-send:disabled{opacity:.45;cursor:not-allowed}.sc-header{display:flex;align-items:center;gap:.5rem;padding:max(.45rem,env(safe-area-inset-top,0px)) max(.65rem,env(safe-area-inset-right,0px)) .45rem max(.65rem,env(safe-area-inset-left,0px));min-height:calc(52px + env(safe-area-inset-top,0px));background:var(--bg-header);border-bottom:1px solid var(--border-subtle);transition:background-color .2s ease;position:sticky;top:0;z-index:20;flex-shrink:0}.sc-header-actions{display:flex;gap:.35rem;align-items:center;margin-left:auto;flex-wrap:nowrap;justify-content:flex-end;flex-shrink:0}.sc-header-title{flex:1;min-width:0}.sc-header-title .sc-title-sm{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sc-header-sub{display:block;font-size:.75rem;color:var(--text-link);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-decoration:none}.sc-header-sub:hover{text-decoration:underline}.sc-brand{font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:.35rem}.sc-chats{flex:1;min-height:100%;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg-sidebar);width:100%;max-width:100%;margin:0 auto;position:relative}.sc-chats-body{flex:1;padding:0 0 max(4.5rem,calc(3.5rem + env(safe-area-inset-bottom,0px)));overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.sc-conv-list{list-style:none;margin:0;padding:0}.sc-conv-row{width:100%;display:flex;align-items:center;gap:.75rem;min-height:68px;padding:.65rem 1rem;border:none;background:transparent;color:var(--text);text-align:left;cursor:pointer;touch-action:manipulation;transition:background-color .15s ease}.sc-conv-row:hover{background:var(--bg-hover)}.sc-conv-row:active{background:var(--bg-active)}.sc-avatar{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.15rem;color:#fff;flex-shrink:0;background:var(--accent)}.sc-conv-meta{min-width:0;flex:1}.sc-conv-title{font-weight:600;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sc-conv-preview{font-size:.85rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:.15rem}.sc-section-pad{padding:.75rem 1rem}.sc-new-chat{margin:.25rem 1rem .75rem;padding:.85rem;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius)}.sc-new-chat .sc-form{margin:.5rem 0 0}.sc-fab{position:fixed;right:max(1rem,env(safe-area-inset-right,0px));bottom:max(1rem,env(safe-area-inset-bottom,0px));width:56px;height:56px;border-radius:50%;border:none;background:var(--accent);color:#fff;font-size:1.75rem;line-height:1;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 12px #00000059;z-index:30;touch-action:manipulation;transition:transform .12s ease,background-color .15s ease}.sc-fab:hover{background:var(--accent-hover)}.sc-fab:active{transform:scale(.96)}.sc-fab[aria-expanded=true]{background:var(--bg-elevated);color:var(--text);font-size:1.35rem}.sc-chat{flex:1;height:100%;height:100dvh;max-height:100dvh;width:100%;max-width:100%;margin:0 auto;display:flex;flex-direction:column;background:var(--bg-chat);overflow:hidden}.sc-thread{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding:.75rem max(.75rem,env(safe-area-inset-right,0px)) .5rem max(.75rem,env(safe-area-inset-left,0px));-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.sc-bubble{max-width:min(85%,28rem);padding:.5rem .7rem .35rem;border-radius:14px;font-size:.95rem;line-height:1.4;box-shadow:var(--shadow);animation:sc-bubble-in .18s ease both;word-break:break-word;overflow-wrap:anywhere}.sc-bubble-out{align-self:flex-end;background:var(--bubble-out);color:var(--text);border-bottom-right-radius:4px}.sc-bubble-in{align-self:flex-start;background:var(--bubble-in);color:var(--text);border-bottom-left-radius:4px}.sc-bubble-meta{font-size:.68rem;opacity:.75;margin-top:.2rem;text-align:right;display:flex;justify-content:flex-end;gap:.35rem;align-items:center}.sc-checks{color:var(--checks);letter-spacing:-.05em}.sc-composer{display:flex;gap:.5rem;align-items:flex-end;padding:.5rem max(.65rem,env(safe-area-inset-right,0px)) max(.5rem,env(safe-area-inset-bottom,0px)) max(.65rem,env(safe-area-inset-left,0px));background:var(--bg-header);border-top:1px solid var(--border-subtle);flex-shrink:0}.sc-composer .sc-input,.sc-composer .sc-textarea{flex:1;min-height:44px;max-height:120px;resize:none;border-radius:var(--radius-pill);padding-top:.7rem;padding-bottom:.7rem;field-sizing:content}@keyframes sc-bubble-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@media(prefers-reduced-motion:reduce){.sc-bubble{animation:none}body,.sc-input,.sc-textarea,.sc-btn,.sc-btn-send,.sc-fab,.sc-header{transition:none}}.sc-admin-nav a{color:var(--text-link);font-size:.9rem;margin-right:.65rem}.sc-list{list-style:none;padding:0;margin:1rem 0;display:grid;gap:8px}.sc-list-item{padding:.75rem;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);display:flex;justify-content:space-between;gap:.75rem;align-items:flex-start}.sc-words{display:grid;grid-template-columns:repeat(2,1fr);gap:.4rem;list-style:none;padding:.75rem;margin:1rem 0;background:var(--bg-elevated);border-radius:var(--radius);border:1px solid var(--border-subtle)}.sc-word-item{font-size:.9rem}.sc-word-num{color:var(--text-muted);margin-right:.25rem}.sc-challenge{border:none;margin:0;padding:0;min-width:0}.sc-choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem}.sc-choice{min-height:44px;padding:.65rem .75rem;border-radius:var(--radius-sm);border:1px solid var(--border-subtle);background:var(--bg-input);color:var(--text);font:inherit;font-weight:600;cursor:pointer;touch-action:manipulation}.sc-choice-selected{border-color:var(--accent);background:var(--bg-active);color:var(--text)}.sc-choice:disabled{opacity:.55}@media(min-width:720px){.sc-chats{max-width:520px}.sc-chat{max-width:720px}.sc-fab{position:absolute}}@media(min-width:900px){.sc-header{padding-top:.65rem;padding-bottom:.65rem;min-height:56px}.sc-bubble{max-width:70%}}