.auth-screen{position:relative;display:grid;width:100%;min-height:100%;padding:24px;overflow:auto;color:var(--text);background:var(--bg);place-items:center}.auth-screen[data-theme=dark]{color-scheme:dark}.auth-card{position:relative;width:min(100%,448px);padding:28px;overflow:hidden;background:color-mix(in srgb,var(--panel-solid) 88%,transparent);border:1px solid color-mix(in srgb,var(--line-strong) 70%,white);border-radius:28px;box-shadow:0 18px 52px #20345424;opacity:0;-webkit-backdrop-filter:blur(28px);backdrop-filter:blur(28px);transform:translateY(8px) scale(.95);transition:opacity .5s ease,transform .5s cubic-bezier(.22,1.18,.36,1)}.auth-card[data-entered=true]{opacity:1;transform:translateY(0) scale(1)}.auth-theme-button{position:absolute;top:20px;right:20px;display:grid;width:36px;height:36px;padding:0;color:var(--muted);cursor:pointer;background:transparent;border-radius:50%;place-items:center}.auth-theme-button:hover{background:var(--surface-muted)}.auth-back-button{position:absolute;top:20px;left:20px;display:grid;width:36px;height:36px;padding:0;color:var(--muted);cursor:pointer;background:transparent;border-radius:50%;place-items:center}.auth-back-button:hover{color:var(--text);background:var(--surface-muted)}.auth-logo{display:block;width:58px;height:58px;margin:0 auto 14px;-o-object-fit:contain;object-fit:contain}.auth-stage{position:relative;width:100%;transition:height .36s cubic-bezier(.22,1,.36,1)}.auth-panel{position:absolute;top:0;left:0;width:100%;opacity:0;pointer-events:none;transition:opacity .18s ease,transform .3s 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button{position:relative;z-index:1;color:var(--muted);font-weight:700;cursor:pointer;background:transparent}.auth-mode-switch[data-mode=login] button:first-of-type,.auth-mode-switch[data-mode=register] button:last-of-type{color:var(--text)}.auth-social-actions{display:grid;gap:10px}.auth-social-actions button{display:flex;align-items:center;justify-content:center;height:48px;gap:10px;color:var(--text);cursor:pointer;background:var(--surface);border:1px solid var(--input-border);border-radius:14px}.auth-social-actions button:hover{background:var(--surface-soft);border-color:var(--line-strong)}.auth-social-actions button:disabled{cursor:default}.auth-social-actions button:disabled:hover{background:var(--surface);border-color:var(--input-border)}.auth-social-actions svg{width:20px;height:20px;fill:currentColor}.auth-social-spinner{width:20px;height:20px;border-radius:999px;background:repeating-conic-gradient(from 0deg,var(--google-blue, #1a73e8) 0deg 10deg,transparent 10deg 45deg);-webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 5px),#000 calc(100% - 4px));mask:radial-gradient(farthest-side,transparent calc(100% - 5px),#000 calc(100% - 4px));animation:auth-spin .8s linear infinite}.auth-divider{display:flex;align-items:center;gap:12px;margin:17px 0;color:var(--faint);font-size:12px}.auth-divider:before,.auth-divider:after{height:1px;content:"";background:var(--line);flex:1}.auth-form{display:grid;gap:14px}.auth-form label,.auth-field{display:grid;gap:7px}.auth-form label>span,.auth-field>.auth-label-row>span{color:var(--muted);font-size:13px;font-weight:700}.auth-label-row{display:flex;align-items:center;justify-content:space-between}.auth-label-row button{padding:0;color:var(--google-blue);font-size:12px;font-weight:700;cursor:pointer;background:transparent}.auth-label-row code{color:var(--google-blue);font-family:inherit;font-size:11px;font-weight:650}.auth-form input{width:100%;height:48px;padding:0 14px;color:var(--text);outline:none;background:var(--surface);border:1px solid var(--input-border);border-radius:14px;transition:border-color .16s ease,box-shadow .16s ease}.auth-form input:focus{border-color:var(--focus-line);box-shadow:0 0 0 4px var(--focus-ring)}.auth-password-field{position:relative}.auth-password-field input{padding-right:46px}.auth-password-field button{position:absolute;top:50%;right:8px;display:grid;width:34px;height:34px;padding:0;color:var(--faint);cursor:pointer;background:transparent;border-radius:8px;transform:translateY(-50%);place-items:center}.auth-password-field button:hover{color:var(--text);background:var(--surface-muted)}.auth-legal{margin:0;color:var(--faint);font-size:12px;line-height:1.5;text-align:center}.auth-legal a{margin:0 3px;color:var(--google-blue);font-weight:650;text-decoration:none}.auth-legal a:hover{text-decoration:underline}.auth-submit{display:flex;align-items:center;justify-content:center;min-height:48px;gap:7px;color:#fff;font-size:15px;font-weight:750;cursor:pointer;background:var(--google-blue);border-radius:14px}.auth-submit:disabled{cursor:not-allowed;background:var(--disabled-bg)}.auth-secondary-action{justify-self:center;padding:5px 8px;color:var(--google-blue);font-size:13px;font-weight:700;cursor:pointer;background:transparent;border-radius:7px}.auth-secondary-action:hover:not(:disabled){background:var(--google-blue-soft)}.auth-secondary-action:disabled{color:var(--faint);cursor:not-allowed}.elastic-press{transition:transform .12s ease,background-color .16s ease}.elastic-press:active:not(:disabled){transform:translateY(1px)}.auth-spinner{animation:auth-spin .8s linear infinite}.auth-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:20px;background:#1720332e;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:auth-modal-fade-in .18s ease-out both}.auth-success-modal,.auth-status-modal{position:relative;width:100%;max-width:340px;padding:24px;overflow:hidden;text-align:center;background:var(--panel-solid);border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 30px #2034541f;animation:auth-modal-enter .22s cubic-bezier(.22,1,.36,1) both}.auth-success-icon,.auth-status-icon{position:relative;display:grid;width:44px;height:44px;margin:0 auto 14px;color:var(--success-text);background:var(--success-soft);border:1px solid color-mix(in srgb,var(--success-text) 22%,transparent);border-radius:50%;place-items:center}.auth-status-modal[data-tone=error] .auth-status-icon{color:var(--danger-text);background:color-mix(in srgb,var(--danger-text) 10%,transparent);border-color:color-mix(in srgb,var(--danger-text) 22%,transparent)}.auth-status-modal[data-tone=info] .auth-status-icon{color:var(--google-blue);background:var(--google-blue-soft);border-color:color-mix(in srgb,var(--google-blue) 20%,transparent)}.auth-success-icon svg,.auth-status-icon svg{width:22px;height:22px}.auth-success-modal h2,.auth-status-modal h2{position:relative;margin:0 0 7px;color:var(--text);font-size:18px}.auth-success-modal p,.auth-status-modal p{position:relative;margin:0 0 18px;color:var(--muted);font-size:13px;line-height:1.6}.auth-success-modal>button,.auth-status-modal>button{position:relative;width:100%;height:42px;color:#fff;font-size:14px;font-weight:750;cursor:pointer;background:var(--google-blue);border-radius:9px}.auth-modal-overlay[data-closing=true]{animation:auth-modal-fade-out .18s ease both}.auth-success-modal[data-closing=true],.auth-status-modal[data-closing=true]{animation:auth-modal-exit .18s ease both}@keyframes auth-spin{to{transform:rotate(360deg)}}@keyframes auth-modal-fade-in{0%{opacity:0}to{opacity:1}}@keyframes auth-modal-fade-out{0%{opacity:1}to{opacity:0}}@keyframes auth-modal-enter{0%{opacity:0;transform:scale(.97)}to{opacity:1;transform:scale(1)}}@keyframes auth-modal-exit{0%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(.98)}}@media(max-width:520px){.auth-screen{min-height:100svh;padding:calc(16px + var(--app-safe-top)) 8px calc(16px + var(--app-safe-bottom));overflow-y:auto;background:radial-gradient(circle at 50% -10%,color-mix(in srgb,var(--google-blue) 10%,transparent),transparent 36%),var(--bg);place-items:center}.auth-modal-overlay{padding:calc(20px + var(--app-safe-top)) 8px calc(20px + var(--app-safe-bottom))}.auth-card{width:min(100%,420px);min-height:auto;padding:24px;border:1px solid color-mix(in srgb,var(--line-strong) 62%,white);border-radius:28px;box-shadow:0 12px 34px 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p{margin:0;color:var(--muted);font-size:15.5px;line-height:1.9}.legal-email-link{color:var(--google-blue);font-weight:750;text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--google-blue) 35%,transparent);text-underline-offset:3px}.legal-email-link:hover{color:var(--google-blue-strong);text-decoration-color:currentColor}.about-content{padding-top:72px;text-align:center}.about-content>img{display:block;width:68px;height:68px;margin:0 auto 20px}.about-lead{max-width:620px;margin-right:auto;margin-left:auto}.about-features{display:grid;margin:44px 0 34px;text-align:left;border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,minmax(0,1fr))}.about-features section{padding:24px 20px}.about-features section+section{border-left:1px solid var(--line)}.about-primary-link{display:inline-flex;align-items:center;justify-content:center;min-width:140px;height:42px;color:#fff;font-weight:750;text-decoration:none;background:var(--google-blue);border-radius:8px}.legal-footer{display:flex;align-items:center;justify-content:center;gap:18px;padding-top:32px;margin-top:42px;color:var(--faint);font-size:12px;border-top:1px solid var(--line)}.legal-footer a{color:var(--muted);text-decoration:none}.legal-footer a:hover{color:var(--google-blue)}.legal-footer a:last-child{color:var(--google-blue);font-weight:750}@media(max-width:680px){.legal-header{padding:0 14px}.legal-header nav{gap:10px}.legal-header nav a:first-child{display:none}.legal-language-trigger{width:36px;padding:0;justify-content:center}.legal-language-trigger span,.legal-language-trigger>svg:last-child{display:none}.legal-document,.about-content{width:min(100% - 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ease}.chat-history-item:hover,.chat-history-item[data-active=true]{color:var(--text);background:var(--surface-muted)}.chat-history-item:active{transform:translateY(1px)}.chat-history-title{display:grid;min-width:0}.chat-history-item strong{min-width:0;overflow:hidden;color:currentColor;font-size:var(--font-body);font-weight:800;text-overflow:ellipsis;white-space:nowrap}.chat-history-meta{display:grid;gap:6px;justify-items:end;color:var(--faint);font-size:var(--font-meta);font-weight:700;white-space:nowrap}.chat-history-item[data-active=true] .chat-history-meta span:last-child{color:var(--google-blue)}.chat-history-empty{display:grid;min-height:132px;align-content:center;justify-items:center;gap:5px;color:var(--faint);text-align:center}.chat-history-empty strong{color:var(--muted);font-size:var(--font-body);font-weight:800}.chat-history-empty span{font-size:var(--font-meta);font-weight:650}@keyframes chat-history-clear-spin{0%{transform:rotate(0) scale(1)}55%{transform:rotate(-18deg) 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