.auth-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.exercise-intro{max-width:760px;color:var(--muted);font-size:1.05rem}.exercise-list{display:grid;gap:22px;margin-top:34px}.exercise-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:26px;min-width:0}.exercise-card.locked{opacity:.66}.exercise-card h2{font-size:1.4rem;margin:8px 0}.exercise-card>p{color:var(--muted);margin:0 0 18px}.exercise-goal{padding:14px 16px;background:#081729;border-left:3px solid var(--cyan);border-radius:8px;display:grid;gap:3px;margin:18px 0}.exercise-goal span{color:#c9d9ed}.exercise-editor-label{display:block;font-weight:800;font-size:.88rem;margin:18px 0 8px}.exercise-editor{display:block;width:100%;min-height:205px;resize:vertical;border:1px solid var(--line);border-radius:10px;padding:14px;background:#061121;color:#dceeff;font:13px/1.5 Consolas,Monaco,monospace;tab-size:2}.exercise-editor:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px #57a6ff24}.exercise-actions{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin:14px 0}.exercise-status{font-size:.85rem;color:var(--muted)}.exercise-preview{display:block;width:100%;min-height:190px;border:1px solid var(--line);border-radius:10px;background:#fff}@media(max-width:760px){.exercise-card{padding:19px}.exercise-actions .button{width:100%}.exercise-preview{min-height:170px}}