*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f0c1a;--surface: #1a1530;--surface2: #221d38;--border: #2e2850;--text: #e8e4f0;--text-muted: #8a82a0;--purple: #7c3aed;--purple-light: #a78bfa;--green: #22c55e;--red: #ef4444;--orange: #f97316;--radius: 12px}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;min-height:100vh}#root{max-width:720px;margin:0 auto;padding:1.5rem 1rem}.dash-header{text-align:center;margin-bottom:2rem}.dash-header h1{font-size:2rem;font-weight:800}.dash-sub{color:var(--text-muted);margin-top:.3rem}.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:.75rem;margin-bottom:1.5rem}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem .75rem;text-align:center}.stat-card.accent-due{border-color:var(--orange)}.stat-card.accent-new{border-color:var(--purple)}.stat-num{display:block;font-size:1.8rem;font-weight:700}.stat-label{font-size:.75rem;color:var(--text-muted)}.btn-primary{display:block;width:100%;padding:1rem;background:var(--purple);color:#fff;border:none;border-radius:var(--radius);font-size:1.1rem;font-weight:600;cursor:pointer;transition:background .15s;margin-bottom:2rem}.btn-primary:hover{background:#6d28d9}.btn-primary.btn-big{font-size:1.2rem;padding:1.2rem}.all-done-banner{background:var(--surface);border:1px solid var(--green);border-radius:var(--radius);padding:1.2rem;text-align:center;color:var(--green);font-weight:600;margin-bottom:2rem}.section-heading{font-size:1rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:1rem}.section-grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:2rem}.section-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;text-align:left;cursor:pointer;transition:border-color .15s,background .15s}.section-card:hover{border-color:var(--purple-light);background:var(--surface2)}.section-card.section-done{opacity:.55}.section-name{display:block;font-weight:600;font-size:.9rem;margin-bottom:.5rem;color:#fff}.section-pills{display:flex;flex-wrap:wrap;gap:.3rem}.pill{font-size:.72rem;padding:.15rem .5rem;border-radius:99px;font-weight:600}.pill.due{background:#f9731626;color:var(--orange)}.pill.new{background:#7c3aed33;color:var(--purple-light)}.pill.learned{background:#22c55e1a;color:var(--green)}.btn-reset{display:block;width:100%;padding:.7rem;background:transparent;color:var(--text-muted);border:1px solid var(--border);border-radius:var(--radius);font-size:.85rem;cursor:pointer;transition:color .15s,border-color .15s}.btn-reset:hover{color:var(--red);border-color:var(--red)}.study-wrap{padding-top:.5rem}.session-header{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.session-header .progress-bar-wrap{flex:1;margin-bottom:0}.session-header .progress-label{margin:0;white-space:nowrap}.btn-abort{background:none;border:none;color:var(--muted, #888);font-size:.85rem;cursor:pointer;padding:.25rem .4rem;border-radius:6px;white-space:nowrap}.btn-abort:hover{background:var(--surface2);color:var(--text)}.progress-bar-wrap{height:6px;background:var(--surface2);border-radius:3px;overflow:hidden;margin-bottom:.5rem}.progress-bar-fill{height:100%;background:var(--purple);border-radius:3px;transition:width .3s}.progress-label{text-align:right;font-size:.8rem;color:var(--text-muted);margin-bottom:1.25rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem}.section-tag{font-size:.75rem;color:var(--text-muted);margin-bottom:.75rem}.question-text{font-size:1.15rem;font-weight:600;line-height:1.5;margin-bottom:1.25rem}.fish-image{width:100%;max-height:300px;object-fit:contain;border-radius:10px;margin-bottom:1.25rem}.options{display:flex;flex-direction:column;gap:.6rem}.option{display:flex;align-items:center;gap:.75rem;padding:.85rem 1rem;background:var(--surface2);border:1px solid var(--border);border-radius:10px;color:var(--text);font-size:.95rem;text-align:left;cursor:pointer;transition:border-color .15s,background .15s}.option:hover:not(.correct):not(.wrong):not(.dimmed){border-color:var(--purple-light);background:#2a2445}.option.correct{border-color:var(--green);background:#22c55e1a}.option.wrong{border-color:var(--red);background:#ef44441a}.option.dimmed{opacity:.4;cursor:default}.option-label{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background:var(--border);font-size:.75rem;font-weight:700;flex-shrink:0}.explanation{margin-top:1rem;padding:1rem;background:#7c3aed1a;border-left:3px solid var(--purple);border-radius:0 8px 8px 0;font-size:.9rem;line-height:1.6;color:var(--text)}.btn-next{display:block;width:100%;margin-top:1rem;padding:.85rem;background:var(--purple);color:#fff;border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .15s}.btn-next:hover{background:#6d28d9}.session-done{text-align:center;padding:3rem 1rem}.done-icon{font-size:3rem;margin-bottom:1rem}.session-done h2{font-size:1.6rem;margin-bottom:1.5rem}.done-stats{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;margin-bottom:1.5rem}.done-stat{padding:.75rem 1.25rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);font-weight:600}.done-stat.correct{border-color:var(--green);color:var(--green)}.done-stat.wrong{border-color:var(--red);color:var(--red)}.done-hint{color:var(--text-muted);font-size:.9rem;margin-bottom:2rem}@media (max-width: 480px){.stats-row{grid-template-columns:repeat(2,1fr)}.section-grid{grid-template-columns:1fr}}