:root{--bg:#18181b;--outline:#27272a;--text-light:#fafafa;--text-dark:#dedede;--accent:#ff9a67;--accent-hover:#e07840;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:16px/150% var(--sans);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;background:var(--bg);color:var(--text-dark);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{flex-direction:column;max-width:100%;min-height:100svh;display:flex}body,p{margin:0}.navbar{background:var(--bg);border-bottom:1px solid var(--outline);z-index:100;box-sizing:border-box;justify-content:space-between;align-items:center;height:75px;padding:0 24px;display:flex;position:sticky;top:0}.navbar-title{color:var(--text-light);letter-spacing:-.3px;font-size:20px;font-weight:600;font-family:var(--heading)}.navbar-buttons{gap:8px;display:flex}.nav-btn{background:var(--bg);color:var(--text-dark);border:1px solid var(--outline);cursor:pointer;border-radius:6px;padding:6px 16px;font-size:14px;transition:background .2s}.nav-btn:hover{background:var(--outline)}.nav-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.nav-btn:disabled{opacity:.45;cursor:default}.nav-btn-primary{background:var(--accent);border-color:var(--accent);color:var(--text-light)}.nav-btn-primary:hover{background:var(--accent-hover)}.main{box-sizing:border-box;flex-direction:column;flex:1;align-items:center;padding:36px 20px 56px;display:flex}.empty-state{color:var(--text-dark);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:20px;font-size:30px;display:flex}.empty-state strong{color:var(--accent)}.exercise{flex-direction:column;align-items:center;gap:28px;width:100%;display:flex}.prompt-card{background:var(--bg);border:1px solid var(--outline);text-align:center;border-radius:12px;min-width:260px;padding:20px 40px}.prompt-verb{justify-content:center;align-items:baseline;gap:12px;margin-bottom:8px;display:flex}.verb-infinitive{color:var(--text-light);letter-spacing:-.4px;font-size:30px;font-weight:700}.verb-english{color:var(--text-dark);font-size:17px}.prompt-subject{color:var(--text-dark);font-size:15px}.prompt-subject strong{color:var(--accent)}.imperative-note{color:var(--text-dark)}.imperative-note strong{color:var(--accent)}.pyramid{flex-direction:column;align-items:center;gap:10px;display:flex}.pyramid-row{justify-content:center;gap:10px;display:flex}.pyramid-box{background:var(--bg);border:1px solid var(--outline);box-sizing:border-box;border-radius:10px;flex-direction:column;gap:6px;width:180px;padding:12px;transition:border-color .2s;display:flex}.pyramid-box.box-correct{border-color:#166534}.pyramid-box.box-incorrect{border-color:#991b1b}.box-form{flex-direction:column;gap:4px;display:flex}.box-form-split+.box-form-split{border-top:1px solid var(--outline);margin-top:2px;padding-top:8px}.tense-label{text-transform:uppercase;letter-spacing:.6px;color:var(--text-dark);font-size:10px;font-weight:600}.box-tu-note{color:var(--accent);text-transform:none;letter-spacing:0;font-weight:400}.form-input{background:var(--bg);border:1px solid var(--outline);width:100%;color:var(--text-light);box-sizing:border-box;font-size:14px;font-family:var(--sans);border-radius:6px;padding:6px 8px;transition:border-color .2s}.form-input:focus{border-color:var(--accent);outline:none}.form-input.input-correct{background:#1665341f;border-color:#166534}.form-input.input-incorrect{background:#991b1b1f;border-color:#991b1b}.form-input:disabled{cursor:default}.correct-answer{color:#4ade80;padding:1px 0;font-size:12px}.correct-answer em{color:var(--text-dark);font-style:normal}.exercise-actions{justify-content:center;display:flex}.action-btn{background:var(--accent);color:var(--text-light);cursor:pointer;border:none;border-radius:8px;padding:10px 32px;font-size:15px;font-weight:600;transition:background .2s}.action-btn:hover{background:var(--accent-hover)}.action-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.result-row{align-items:center;gap:20px;display:flex}.result-label{font-size:18px;font-weight:700}.result-correct{color:#4ade80}.result-incorrect{color:#f87171}.modal-overlay{z-index:200;background:#0000008c;justify-content:flex-end;display:flex;position:fixed;inset:0}.modal-panel{background:var(--bg);border-left:1px solid var(--outline);box-sizing:border-box;flex-direction:column;width:340px;max-width:100%;height:100%;padding:24px;display:flex;overflow-y:auto}.modal-header{justify-content:space-between;align-items:center;margin-bottom:28px;display:flex}.modal-header h2{color:var(--text-light);margin:0;font-size:20px;font-weight:600}.modal-close{color:var(--text-dark);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px 8px;font-size:18px;line-height:1;transition:color .2s}.modal-close:hover{color:var(--text-light)}.modal-section{margin-bottom:24px}.modal-section h3{text-transform:uppercase;letter-spacing:.7px;color:var(--text-dark);margin:0 0 10px;font-size:11px;font-weight:700}.checkbox-group{flex-direction:column;gap:10px;display:flex}.checkbox-group-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.checkbox-label{color:var(--text-dark);cursor:pointer;align-items:center;gap:8px;font-size:15px;display:flex}.checkbox-label input[type=checkbox]{accent-color:var(--accent);cursor:pointer;flex-shrink:0;width:15px;height:15px}.count{color:var(--text-dark);margin-left:2px;font-size:13px}.subject-name{font-family:var(--mono);font-size:14px}.input-row{gap:8px;display:flex}.text-input{background:var(--bg);border:1px solid var(--outline);color:var(--text-light);box-sizing:border-box;font-size:15px;font-family:var(--sans);border-radius:6px;flex:1;padding:8px 12px}.text-input:focus{border-color:var(--accent);outline:none}.text-input.input-warn{border-color:#b91c1c}.clear-btn{background:var(--bg);border:1px solid var(--outline);color:var(--text-dark);cursor:pointer;border-radius:6px;padding:0 12px;font-size:13px;transition:background .2s}.clear-btn:hover{background:var(--outline)}.input-warning{color:#f87171;margin:6px 0 0;font-size:13px}.radio-group{flex-direction:column;gap:10px;display:flex}.radio-label{color:var(--text-dark);cursor:pointer;align-items:center;gap:8px;font-size:15px;display:flex}.radio-label input[type=radio]{accent-color:var(--accent);cursor:pointer;flex-shrink:0;width:15px;height:15px}.modal-footer{border-top:1px solid var(--outline);justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:20px;display:flex}.pool-info{color:var(--text-dark);font-size:13px}.modal-actions{gap:8px;display:flex}@media (width<=680px){.pyramid-box{width:140px;padding:10px}.modal-panel{border-top:1px solid #2a2a2a;border-left:none;border-radius:14px 14px 0 0;width:100%;height:auto;max-height:90vh;position:fixed;bottom:0}.modal-overlay{align-items:flex-end}}