:root{--bg:#f4f6f9;--surface:#fff;--ink:#111827;--muted:#5b6472;--line:#e4e8ee;--soft:#eef1f5;--accent:#1f5eff;--on-accent:#fff;--energy:#f26b1d;--success:#12805c;--warning:#8a5a00;--danger:#b42318;--radius:12px;--font:Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);font-family:var(--font);margin:0;font-size:15px;line-height:1.45}a{color:var(--accent);text-decoration:none}h1{letter-spacing:-.01em;margin:0 0 4px;font-size:1.6rem}h2{margin:0 0 12px;font-size:1.1rem}.muted{color:var(--muted)}.center-page{place-items:center;min-height:100vh;padding:24px 16px;display:grid}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}.narrow{width:100%;max-width:420px}.stack{gap:12px;display:grid}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.spread{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}label{color:var(--muted);gap:4px;font-size:.85rem;font-weight:500;display:grid}input,select,textarea{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;min-height:38px;padding:8px 10px}input:focus,select:focus,textarea:focus{outline:2px solid color-mix(in srgb, var(--accent) 40%, transparent);border-color:var(--accent)}input[aria-invalid=true]{border-color:var(--danger)}button{font:inherit;border:1px solid var(--line);background:var(--surface);min-height:38px;color:var(--ink);cursor:pointer;border-radius:8px;padding:8px 14px;font-weight:600}button.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}button.danger{color:var(--danger)}button:disabled{opacity:.55;cursor:default}.error{color:var(--danger);font-size:.9rem}.ok{color:var(--success);font-size:.9rem}.shell{grid-template-columns:220px 1fr;min-height:100vh;display:grid}.sidebar{background:var(--surface);border-right:1px solid var(--line);flex-direction:column;gap:4px;padding:20px 14px;display:flex}.brand{align-items:center;gap:10px;margin-bottom:16px;font-weight:700;display:flex}.brand-mark{background:var(--accent);width:30px;height:30px;color:var(--on-accent);border-radius:8px;place-items:center;font-size:.9rem;display:grid}.nav-link{color:var(--ink);border-radius:8px;padding:8px 10px;font-weight:500}.nav-link[aria-current=page]{background:color-mix(in srgb, var(--accent) 12%, transparent);color:var(--accent)}.main{width:100%;max-width:1100px;padding:28px 32px}.page-head{margin-bottom:20px}table{border-collapse:collapse;width:100%}th,td{text-align:left;border-bottom:1px solid var(--line);padding:8px 6px;font-size:.92rem}th{color:var(--muted);font-weight:500}.pill{background:var(--soft);color:var(--muted);border-radius:999px;padding:2px 8px;font-size:.78rem;font-weight:600;display:inline-block}.pill.done{background:color-mix(in srgb, var(--success) 14%, transparent);color:var(--success)}.pill.energy{background:color-mix(in srgb, var(--energy) 16%, transparent);color:color-mix(in srgb, var(--energy) 70%, var(--ink))}.grid-2{grid-template-columns:1fr 1fr;gap:16px;display:grid}.list-item{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:10px 0;display:flex}.list-item:last-child{border-bottom:0}.sets input{width:72px}@media (max-width:820px){.shell{grid-template-columns:1fr}.sidebar{border-right:0;border-bottom:1px solid var(--line);flex-flow:wrap}.main{padding:20px 16px}.grid-2{grid-template-columns:1fr}}.exercise-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;display:grid}.exercise-card{flex-direction:column;padding:0;display:flex;overflow:hidden}.exercise-media{aspect-ratio:16/9;cursor:pointer;background:#eef1f5;border:0;width:100%;padding:0;position:relative}.exercise-media img,.exercise-media video{object-fit:cover;width:100%;height:100%;display:block}.exercise-media .play{color:#fff;background:#111827b3;border-radius:999px;padding:4px 10px;font-size:.8rem;font-weight:600;position:absolute;bottom:10px;left:10px}.exercise-media.empty{cursor:default;color:#5b6472;justify-content:center;align-items:center;font-size:.85rem;display:flex}.exercise-body{flex-direction:column;gap:4px;padding:12px 14px 14px;display:flex}.exercise-name{align-items:center;gap:10px;display:inline-flex}.exercise-thumb{object-fit:cover;background:#eef1f5;border-radius:6px;flex:none;width:56px;height:32px}