:root,[data-theme=dark]{--bg-primary:#2d3748;--bg-secondary:#1f2733;--bg-card:#2a3340;--bg-elev:#323d4d;--bg-input:#1e2630;--bg-hover:#36414f;--bg-overlay:#0f1218db;--text-primary:#fff;--text-secondary:#b8c1cf;--text-muted:#7c8694;--text-inverse:#fff;--text-on-accent:#fff;--accent:#ef4444;--accent-hover:#dc2626;--accent-dim:#ef44442e;--accent-soft:#ef444414;--success:#22c55e;--danger:#ef4444;--warning:#f59e0b;--info:#22d3ee;--border:#3d4a5c;--border-strong:#4d5c70;--shadow-sm:0 2px 8px #00000040;--shadow:0 8px 28px #00000059;--radius:18px;--radius-sm:10px;--sidebar-width:88px;--header-height:84px}[data-theme=light]{--bg-primary:#f4f4f6;--bg-secondary:#fff;--bg-card:#fff;--bg-elev:#fff;--bg-input:#fff;--bg-hover:#ebebef;--bg-overlay:#dcdce0eb;--text-primary:#14181f;--text-secondary:#4b5563;--text-muted:#8b95a4;--text-inverse:#14181f;--text-on-accent:#fff;--accent:#ef4444;--accent-hover:#dc2626;--accent-dim:#ef44441a;--accent-soft:#ef44440d;--border:#d9dde4;--border-strong:#b8bfca;--shadow-sm:0 2px 8px #0000000f;--shadow:0 8px 24px #0000001a}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.layout{grid-template-columns:var(--sidebar-width) 1fr;grid-template-rows:var(--header-height) 1fr;grid-template-areas:"side 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var(--border);border-radius:50%;width:88px;height:88px;margin-bottom:14px}.account-form{flex-direction:column;gap:10px;display:flex}.account-info{color:var(--text-secondary);flex-direction:column;gap:6px;font-size:14px;display:flex}.account-actions{gap:8px;margin-top:12px;display:flex}.progress-history{margin-top:24px}.progress-history table{border-collapse:collapse;width:100%;font-size:13px}.progress-history th,.progress-history td{text-align:left;border-bottom:1px solid var(--border);padding:10px 8px}.progress-history th{color:var(--text-muted);text-transform:uppercase;font-size:11px;font-weight:600}.lessons-page{max-width:1100px;margin:0 auto}.lessons-page h2{margin-bottom:22px;font-size:22px}.lesson-group{margin-bottom:28px}.lesson-group h3{color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px;font-size:12px}.lesson-list{flex-direction:column;gap:10px;display:flex}.lesson-card{background:var(--bg-card);border:1px solid 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var(--border);border-radius:var(--radius-sm);justify-content:space-between;align-items:center;margin-bottom:8px;padding:12px 16px;display:flex}.grant-list{flex-direction:column;gap:8px;margin-bottom:16px;display:flex}.checkbox-label{color:var(--text-secondary);cursor:pointer;align-items:flex-start;gap:8px;font-size:13px;display:flex}.checkbox-label input[type=checkbox]{width:auto;margin-top:2px}.text-muted{color:var(--text-muted);font-size:14px}.loader{height:200px;color:var(--text-muted);justify-content:center;align-items:center;display:flex}