:root{--color-brand:#0057ff;--color-stable:#16a34a;--color-watch:#ca8a04;--color-risk:#dc2626;--color-neutral:#6b7280;--color-bg:#f7f9fc;--color-text:#111827}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Inter,system-ui,sans-serif;background:var(--color-bg);color:var(--color-text)}a{color:var(--color-brand)}.card{background:#fff;border-radius:12px;padding:1.25rem;box-shadow:0 1px 3px rgb(0 0 0/8%)}.btn{display:inline-block;background:var(--color-brand);color:#fff;border:none;border-radius:8px;padding:.75rem 1rem;font-weight:600;cursor:pointer}.btn:disabled{opacity:.6;cursor:not-allowed}.input{width:100%;padding:.65rem .75rem;border:1px solid #d1d5db;border-radius:8px;margin-bottom:.75rem}.nav-bottom{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:space-around;background:#fff;border-top:1px solid #e5e7eb;padding:.5rem 0}.nav-bottom a{text-decoration:none;font-size:.75rem;color:var(--color-neutral)}.nav-bottom a.active{color:var(--color-brand);font-weight:600}.shell-coach{display:flex;min-height:100vh}.sidebar{width:220px;background:#fff;border-right:1px solid #e5e7eb;padding:1rem}.sidebar a{display:block;padding:.5rem 0;text-decoration:none;color:var(--color-text)}.coach-main{flex:1 1;padding:1.5rem}.stat-box{background:var(--color-bg);border-radius:10px;padding:1rem;text-align:center}.stat-label{display:block;font-size:.75rem;color:var(--color-neutral);margin-bottom:.35rem}.stat-value{font-size:1.75rem;font-weight:700}