:root{--font-family-base: "Source Sans 3", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-base: 18px;--font-size-large-scale: 1.2;--line-height-base: 1.5;--color-surface: #ffffff;--color-background: #f4f7fb;--color-panel: #e8eef7;--color-text: #1b1f3b;--color-text-muted: #4b526d;--color-border: #c9d5ea;--color-focus: #ff9b40;--color-accent: #0057cb;--color-accent-strong: #00398f;--color-button-primary-text: #ffffff;--color-surface-contrast: #0f0f0f;--color-background-contrast: #050505;--color-text-contrast: #f5f5f5;--color-border-contrast: #9296a3;--color-panel-contrast: #1a1a1a;--color-key-hint-text: #050505;--radius-base: 16px;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--layout-max-width: 760px;--animation-duration: .16s}:root.is-high-contrast{--color-surface: var(--color-surface-contrast);--color-background: var(--color-background-contrast);--color-panel: var(--color-panel-contrast);--color-text: var(--color-text-contrast);--color-text-muted: #d7d7d7;--color-border: var(--color-border-contrast);--color-accent: #f7c346;--color-accent-strong: #fbd064;--color-key-hint-text: #050505;--color-button-primary-text: #050505}*,*:before,*:after{box-sizing:border-box}:root{font-family:var(--font-family-base);font-size:var(--font-size-base);line-height:var(--line-height-base);font-weight:400;color:var(--color-text);background-color:var(--color-background);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}body{margin:0;min-height:100vh;background:var(--color-background);color:var(--color-text);transition:background var(--animation-duration) ease,color var(--animation-duration) ease}body.is-large-text{font-size:calc(var(--font-size-base) * var(--font-size-large-scale));line-height:1.6}#root{min-height:100vh}img{max-width:100%;height:auto}button,input,textarea{font:inherit;color:inherit}button{border:none;background:none;padding:0}a{color:var(--color-accent);text-decoration:underline}p{margin-top:0;margin-bottom:var(--spacing-md)}.app-shell{min-height:100vh;height:100vh;padding:calc(var(--spacing-xl) / 2);display:flex;justify-content:center;background:var(--color-background);overflow:hidden}.app-layout{width:100%;max-width:1080px;height:calc(100vh - 2 * var(--spacing-xl));min-height:0;display:flex;gap:var(--spacing-xl);align-items:stretch}.app-toolbar-panel{flex:0 0 210px;background:var(--color-surface);border-radius:var(--radius-base);border:1px solid var(--color-border);padding:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-md);min-height:0}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;clip:rect(0 0 0 0);clip-path:inset(50%);overflow:hidden;white-space:nowrap}.app-toolbar{display:flex;flex-direction:column;gap:var(--spacing-md);flex:1;min-height:0}.app-toolbar__content{display:flex;flex-direction:column;gap:var(--spacing-md);flex:1}.app-toolbar__menu-button{display:none;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-base);border:2px solid var(--color-border);background:var(--color-surface);font-weight:600;cursor:pointer}.app-toolbar__menu-button:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.app-toolbar__menu-icon{font-size:1.3rem;line-height:1}.app-toolbar__drawer-overlay{position:fixed;inset:0;background:#0006;display:flex;justify-content:center;align-items:flex-end;padding:var(--spacing-lg);z-index:1000}.app-toolbar__drawer{width:100%;max-width:520px;background:var(--color-surface);border-radius:var(--radius-base);border:1px solid var(--color-border);padding:var(--spacing-lg);max-height:90vh;overflow-y:auto;display:flex;flex-direction:column;gap:var(--spacing-md)}.app-toolbar__drawer-header{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-md)}.app-toolbar__close-button{border:none;background:transparent;font-weight:600;color:var(--color-accent);cursor:pointer}.app-toolbar__close-button:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.app-toolbar__group{display:flex;flex-direction:column;gap:var(--spacing-sm);margin-top:var(--spacing-md);flex:1}.app-toolbar__donate{margin-top:auto;padding-top:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-sm)}.app-toolbar__action-link{display:inline-flex;align-items:center;justify-content:space-between;width:100%;padding:var(--spacing-xs) var(--spacing-md);border-radius:999px;border:2px solid var(--color-border);background:var(--color-surface);color:var(--color-text);font-weight:600;text-decoration:none;gap:var(--spacing-xs);transition:color var(--animation-duration) ease,border-color var(--animation-duration) ease,background var(--animation-duration) ease}.app-toolbar__action-link:hover,.app-toolbar__action-link:focus-visible{border-color:var(--color-accent);background:#0057cb14;color:var(--color-accent)}.app-toolbar__action-link:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.language-selector{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--spacing-sm)}.language-selector__button{border-radius:var(--radius-base);border:1px solid var(--color-border);padding:var(--spacing-sm);background:var(--color-surface);cursor:pointer;font-size:1.5rem;line-height:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-xs);transition:border-color var(--animation-duration) ease,box-shadow var(--animation-duration) ease}.language-selector__button.is-active{border-color:var(--color-accent);box-shadow:0 0 0 2px #0057cb26}.language-selector__button:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.app-main{flex:1;display:flex;flex-direction:column;gap:var(--spacing-md);min-height:0;background:var(--color-surface);padding:calc(var(--spacing-xl) / 2);border-radius:var(--radius-base);box-shadow:0 18px 60px #132a6321;border:1px solid var(--color-border);height:100%}.button{border-radius:999px;border:2px solid var(--color-border);padding:var(--spacing-sm) var(--spacing-lg);background:var(--color-panel);color:var(--color-text);font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);transition:background var(--animation-duration) ease,border-color var(--animation-duration) ease,color var(--animation-duration) ease}.button__loader{width:1rem;height:1rem;border:2px solid rgba(255,255,255,.6);border-top-color:#fff3;border-right-color:#fff3;border-radius:50%;animation:button-spin .8s linear infinite}.button--ghost .button__loader{border-color:var(--color-border);border-top-color:transparent;border-right-color:transparent}@keyframes button-spin{to{transform:rotate(360deg)}}.button--primary{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-button-primary-text)}.button--ghost{background:transparent}.button:disabled{cursor:not-allowed;opacity:.55}.toggle-button{flex:1 1 200px;border:2px solid var(--color-border);border-radius:999px;padding:var(--spacing-sm) var(--spacing-md);background:var(--color-surface);color:var(--color-text);cursor:pointer;display:flex;flex-direction:column;align-items:stretch;gap:var(--spacing-xs);transition:border-color var(--animation-duration) ease,background var(--animation-duration) ease}.toggle-button--compact{padding:calc(var(--spacing-xs) * 1.5) var(--spacing-sm);border-radius:1.25rem;font-size:.95rem;min-height:1.5rem;flex:0 0 auto}.toggle-button--compact .toggle-button__label{font-size:.95rem}.toggle-button--compact .toggle-button__status{font-size:.8rem}.toggle-button[aria-pressed=true]{border-color:var(--color-accent);background:#0057cb14}.toggle-button:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.toggle-button__meta-row{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);width:100%}.toggle-button__label{font-weight:600;display:block;width:100%;margin-bottom:calc(var(--spacing-xs) / 2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.toggle-button__status{font-size:.85rem;color:var(--color-text-muted);display:inline-flex;align-items:center;justify-content:center;min-width:3rem;text-align:center}.toggle-button__hint{display:inline-flex;align-items:center;flex-shrink:0;justify-content:center}.key-hint{border:1px solid var(--color-border);border-radius:6px;padding:.15rem .55rem;font-size:.75rem;line-height:1.1;min-width:1.6rem;text-align:center;font-weight:600;display:inline-flex;position:relative;align-items:center;justify-content:center;overflow:hidden;background:linear-gradient(180deg,#fff,#e6ecf7);color:var(--color-key-hint-text);box-shadow:inset 0 -2px #00000014,inset 0 1px #fff9,0 1px 3px #0c152e40}.key-hint__label{position:relative;z-index:1}.key-hint__fill{position:absolute;inset:0;background:linear-gradient(180deg,#d7e8ff,#b6cffe);transform-origin:left center;transform:scaleX(0);transition:transform .16s linear;opacity:.5}.key-hint--flash{animation:key-hint-flash .26s ease}@keyframes key-hint-flash{0%{box-shadow:inset 0 -2px #00000014,inset 0 1px #ffffffe6,0 0 #0057cb73;transform:translateY(0)}50%{box-shadow:inset 0 -2px #0000002e,inset 0 1px #ffffffe6,0 0 10px #0057cb59;transform:translateY(-1px)}to{box-shadow:inset 0 -2px #00000014,inset 0 1px #ffffffe6,0 0 #0057cb00;transform:translateY(0)}}.chat-history-wrapper{display:flex;flex:1;min-height:0}.chat-history__frame{display:flex;flex:1;gap:var(--spacing-sm);min-height:0}.chat-history__controls{display:flex;flex-direction:column;gap:var(--spacing-sm);align-items:stretch;justify-content:space-between;align-self:stretch;height:100%}.chat-history__button{border-radius:999px;border:2px solid var(--color-border);background:var(--color-surface);padding:var(--spacing-md) var(--spacing-sm);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:3.25rem;min-height:0;flex:1;width:100%;font-size:1rem;font-weight:700}.chat-history__button:disabled{opacity:.4;cursor:not-allowed}.chat-history{display:flex;flex-direction:column;gap:var(--spacing-md);overflow-y:auto;padding-right:var(--spacing-sm);flex:1;min-height:0}.chat-message{background:var(--color-surface);border-radius:var(--radius-base);padding:calc(var(--spacing-md) / 2);border:1px solid var(--color-border)}.chat-message--user{background:#0057cb14;border-color:#0057cb40}.chat-message__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-sm)}.chat-message__role{font-weight:700;text-transform:uppercase;letter-spacing:.05em}.chat-message__time{font-size:.85rem;color:var(--color-text-muted)}.chat-message__content{margin:0;white-space:pre-wrap}.chat-message__link{font-weight:600;text-decoration:underline;word-break:break-word}.chat-message__link:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px;text-decoration:none}.chat-placeholder{margin:0;color:var(--color-text-muted);display:flex;flex-direction:column;gap:var(--spacing-sm)}.chat-placeholder p{margin:0}.chat-placeholder__hint{color:var(--color-text);margin-top:var(--spacing-sm)}.chat-placeholder__cta{display:inline-flex;align-items:center;gap:var(--spacing-sm);margin-top:var(--spacing-md);color:var(--color-text)}.chat-placeholder__key .key-hint{transform:scale(1.4);transform-origin:left center;display:inline-flex;margin:0 var(--spacing-lg) 0 calc(var(--spacing-lg) * .6)}.chat-placeholder__key-fallback{display:none;font-weight:700;margin:0 var(--spacing-sm)}.chat-placeholder__cta-text{font-weight:600}.chat-status{margin:0;font-style:italic;color:var(--color-text-muted)}.chat-alert{margin:0;background:#ff9b4026;border-left:4px solid var(--color-focus);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--spacing-xs);font-size:.95rem}.chat-alert code{font-size:.95em}.chat-input{display:flex;flex-direction:column;gap:var(--spacing-sm);margin-top:auto}.chat-textarea-wrapper{position:relative;--speech-button-width: 8rem}.chat-textarea{border-radius:var(--radius-base);border:2px solid var(--color-border);padding:var(--spacing-md);padding-right:var(--speech-button-width, 8rem);min-height:140px;resize:vertical;width:100%;background:var(--color-surface);color:var(--color-text)}.chat-textarea:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.chat-textarea::placeholder{color:var(--color-text-muted)}.chat-textarea__speech{position:absolute;top:var(--spacing-sm);right:var(--spacing-sm);border-radius:999px;border:1px solid var(--color-border);background:var(--color-surface);padding:.35rem .75rem;cursor:pointer;font-weight:600;display:inline-flex;align-items:center;gap:var(--spacing-xs)}.chat-textarea__speech:disabled{opacity:.5;cursor:not-allowed}.chat-textarea__speech-label{white-space:nowrap}.chat-error{margin:0;color:#8b1a1a;font-weight:600}.chat-actions{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.chat-actions .button{flex:1 1 220px;text-align:center}@media(max-width:640px){.app-shell{padding:calc(var(--spacing-lg) / 2) calc(var(--spacing-md) / 2);height:auto;overflow:visible}.app-layout{flex-direction:column;height:auto;min-height:auto}.app-toolbar-panel{flex-basis:auto}.app-toolbar__menu-button{display:inline-flex}.key-hint{display:none}.chat-placeholder__key-fallback{display:inline}.app-main{padding:calc(var(--spacing-lg) / 2);height:auto}.toggle-button{width:100%}.chat-history__frame{flex-direction:column}.chat-history__controls{flex-direction:row;justify-content:flex-end;height:auto;align-self:auto;align-items:center}.chat-history__button{flex:0 0 auto;min-height:3rem;width:auto}}