:root{--bg:#f5f6f8;--surface:#fff;--border:#d9dce1;--text:#1c1f24;--text-muted:#6b7280;--accent:#2f6feb;--accent-contrast:#fff;--error-bg:#fdeceb;--error-border:#e5534b;--error-text:#8a1f16;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font:16px/1.5 system-ui,Segoe UI,Roboto,sans-serif}:root[data-theme=dark]{--bg:#14161a;--surface:#1b1e24;--border:#2e333c;--text:#e6e8eb;--text-muted:#9aa1ac;--accent:#5b9dff;--accent-contrast:#0b1220;--error-bg:#3a1c1c;--error-border:#e5534b;--error-text:#ffb4ac;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0}.site-header{align-items:center;gap:10px;margin-bottom:12px;display:flex}.site-header__brand{color:var(--accent);white-space:nowrap;font-size:15px;font-weight:700;text-decoration:none}.site-header__brand:hover{text-decoration:underline}.site-header__divider{color:var(--text-muted);font-weight:400}.site-header__title{color:var(--text-muted);white-space:nowrap;font-size:15px;font-weight:600}.toolbar-spacer{flex:1}.btn,.toggle-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:6px;padding:6px 12px;font-size:13px}.btn:hover,.toggle-btn:hover{border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--accent);border-color:var(--accent);color:var(--accent-contrast)}.icon-btn{padding:6px 10px}.error-banner{background:var(--error-bg);border:1px solid var(--error-border);color:var(--error-text);border-radius:6px;margin:12px 0;padding:10px 14px;font-size:14px}.app{max-width:860px;margin:0 auto;padding:20px 20px 48px}.app__header{margin-bottom:20px}.app__header h1{margin:0 0 4px;font-size:26px}.app__header p{color:var(--text-muted);margin:0}.mode-tabs{gap:8px;margin-bottom:20px;display:flex}.mode-tabs .btn.is-active{background:var(--accent);border-color:var(--accent);color:var(--accent-contrast)}.translate-grid{grid-template-columns:1fr 1fr;gap:16px;display:grid}@media (width<=640px){.translate-grid{grid-template-columns:1fr}}.panel{background:var(--surface);border:1px solid var(--border);border-radius:8px;flex-direction:column;gap:8px;padding:14px;display:flex}.panel__header{align-items:center;gap:8px;display:flex}.panel__header h2{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin:0;font-size:14px}.panel textarea{resize:vertical;background:var(--bg);width:100%;min-height:160px;color:var(--text);border:1px solid var(--border);border-radius:6px;padding:10px;font-family:ui-monospace,Consolas,monospace;font-size:15px;line-height:1.5}.panel__actions{gap:8px;display:flex}.trainer{background:var(--surface);border:1px solid var(--border);text-align:center;border-radius:8px;padding:24px}.trainer__prompt{margin:8px 0 20px;font-size:48px;font-weight:700}.trainer__attempt{letter-spacing:4px;min-height:40px;color:var(--accent);margin-bottom:16px;font-family:ui-monospace,Consolas,monospace;font-size:28px}.trainer__controls{justify-content:center;gap:10px;margin-bottom:20px;display:flex}.trainer__controls .btn{border-radius:50%;width:52px;height:52px;font-size:20px}.trainer__actions{justify-content:center;gap:10px;margin-bottom:16px;display:flex}.trainer__feedback{min-height:24px;margin-bottom:12px;font-weight:600}.trainer__feedback--correct{color:#1a8a4a}.trainer__feedback--incorrect{color:var(--error-text)}.trainer__score{color:var(--text-muted);font-size:14px}