*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #4f46e5;--primary-dark: #4338ca;--danger: #ef4444;--bg: #f9fafb;--card: #ffffff;--border: #e5e7eb;--text: #111827;--muted: #6b7280;--radius: 8px;font-family:system-ui,-apple-system,sans-serif;font-size:15px;color:var(--text);background:var(--bg)}body{min-height:100vh}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.navbar{display:flex;align-items:center;padding:.5rem 1.5rem;min-height:56px;background:var(--primary);color:#fff;box-shadow:0 1px 4px #00000026}.navbar-brand{flex:1}.navbar-brand a{color:#fff;font-size:1.1rem;font-weight:700;text-decoration:none}.navbar-center{display:flex;align-items:center;gap:.5rem}.navbar-right{flex:1;display:flex;align-items:center;justify-content:flex-end;gap:.75rem}.navbar .btn-outline{color:#fff;border-color:#fff9}.navbar .btn-outline:hover{background:#ffffff26}.navbar .btn{color:#fff}.navbar-user{font-size:.9rem;color:#fff;cursor:pointer}.navbar-user:hover{opacity:.85}.role-badge{background:#fff3;padding:1px 8px;border-radius:999px;font-size:.75rem;text-transform:capitalize;margin-left:4px}.navbar-hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;background:none;border:none;cursor:pointer;padding:6px;margin-left:auto}.navbar-hamburger span{display:block;width:24px;height:2px;background:#fff;border-radius:2px}.navbar-mobile-menu{display:none;position:absolute;top:56px;left:0;right:0;background:var(--primary);flex-direction:column;align-items:flex-start;gap:.5rem;padding:1rem 1.5rem;box-shadow:0 4px 8px #0003;z-index:100}.navbar-mobile-user{font-size:.9rem;color:#fff;padding-bottom:.5rem;border-bottom:1px solid rgba(255,255,255,.2);width:100%;margin-bottom:.25rem}@media(max-width:640px){.navbar{position:relative;flex-wrap:wrap}.navbar-desktop{display:none!important}.navbar-hamburger,.navbar-mobile-menu{display:flex}}.main-content{max-width:960px;margin:0 auto;padding:2rem 1rem}.page-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}.page-header h1{flex:1}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:var(--radius);border:none;cursor:pointer;font-size:.9rem;font-weight:500;transition:background .15s,opacity .15s;text-decoration:none}.btn:hover{opacity:.9;text-decoration:none}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}.btn-danger{background:var(--danger);color:#fff}.btn-sm{padding:.3rem .7rem;font-size:.82rem}.btn-block{width:100%}.form-group{display:flex;flex-direction:column;gap:.35rem;margin-bottom:1rem}.form-group label{font-size:.85rem;font-weight:600;color:var(--muted)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}input,select,textarea{padding:.5rem .75rem;border:1px solid var(--border);border-radius:var(--radius);font-size:.95rem;background:#fff;width:100%;transition:border-color .15s}input:focus,select:focus{outline:none;border-color:var(--primary)}.auth-page{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 56px)}.auth-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:2.5rem;width:100%;max-width:400px;box-shadow:0 2px 12px #0000000f}.auth-card h1{text-align:center;font-size:1.4rem;margin-bottom:.25rem}.auth-card h2{text-align:center;font-size:1.1rem;color:var(--muted);margin-bottom:1.5rem}.auth-hint{margin-top:1.5rem;font-size:.82rem;color:var(--muted)}.auth-hint code{display:block;margin:2px 0}.alert{padding:.75rem 1rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.9rem}.alert-error{background:#fee2e2;color:#b91c1c;border:1px solid #fca5a5}.alert-success{background:#dcfce7;color:#15803d;border:1px solid #86efac}.btn-link{background:none;border:none;padding:0;color:var(--primary);font-size:.875rem;cursor:pointer;text-decoration:underline}.dashboard-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}.dashboard-header h1{font-size:1.5rem}.dashboard-layout{display:grid;grid-template-columns:240px 1fr;gap:1.5rem}.client-list{display:flex;flex-direction:column;gap:.5rem}.client-item{text-align:left;padding:.75rem 1rem;border-radius:var(--radius);border:1px solid var(--border);background:var(--card);cursor:pointer;transition:border-color .15s,background .15s}.client-item:hover,.client-item.active{border-color:var(--primary);background:#eef2ff}.client-name{font-weight:600}.client-email{font-size:.82rem;color:var(--muted)}.session-list h2{margin-bottom:1rem}.session-grid{display:grid;gap:.75rem}.session-card{display:block;padding:1rem 1.25rem;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);transition:border-color .15s;text-decoration:none;color:var(--text)}.session-card:hover{border-color:var(--primary);text-decoration:none}.session-card--highlight{border-color:var(--primary);box-shadow:0 0 0 3px #4f46e533}.session-card-date{font-weight:700;font-size:1rem}.session-card-meta{font-size:.85rem;color:var(--muted);margin-top:2px}.session-card-notes{font-size:.85rem;color:var(--muted);margin-top:4px}.session-notes{color:var(--muted);margin-bottom:1rem}.exercise-block{margin-bottom:2rem;overflow-x:auto}.exercise-block h3{margin-bottom:.25rem}.exercise-notes{font-size:.85rem;color:var(--muted);margin-bottom:.75rem}.sets-table,.sets-form-table{width:100%;border-collapse:collapse;margin-top:.5rem;font-size:.9rem}.sets-table th,.sets-table td,.sets-form-table th,.sets-form-table td{padding:.5rem .75rem;border:1px solid var(--border);text-align:left}.sets-table th,.sets-form-table th{background:#f3f4f6;font-weight:600}.sets-form-table input{width:90px;padding:.3rem .5rem}.exercises-section{margin-top:1.5rem}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}.section-header h2{font-size:1.1rem}.exercise-form-block{border:1px solid var(--border);border-radius:var(--radius);padding:1rem;margin-bottom:1rem;background:var(--card);overflow-x:auto}.exercise-form-header{display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem}.exercise-form-header select{flex:1}.chart-wrapper{margin-top:1.5rem}.chart-wrapper h3{margin-bottom:1rem}@keyframes session-sweep{0%{background-position:100% center}to{background-position:0% center}}.active-session-banner{background:linear-gradient(90deg,#15803d,#22c55e,#15803d,#22c55e,#15803d);background-size:200% 100%;animation:session-sweep 3s linear infinite;cursor:pointer}.active-session-banner:hover{filter:brightness(1.1)}.loading{color:var(--muted);padding:2rem 0;text-align:center}.empty{color:var(--muted);font-style:italic;padding:1rem 0}@media(max-width:640px){.dashboard-layout,.form-row{grid-template-columns:1fr}}