:root{--bg-body:#09090b;--bg-card:#18181b;--bg-input:#27272a;--primary:#22c55e;--primary-dim:#22c55e1a;--accent:#3b82f6;--danger:#ef4444;--text-main:#f4f4f5;--text-muted:#a1a1aa;--text-dim:#52525b;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:16px;--spacing-lg:24px;--shadow-card:0 4px 6px -1px #00000080;--border-light:1px solid #27272a}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}body{background-color:var(--bg-body);color:var(--text-main);overscroll-behavior-y:none;padding-bottom:90px;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.5}.btn{border-radius:var(--radius-md);cursor:pointer;transition:all .2s active;border:none;justify-content:center;align-items:center;gap:8px;padding:12px 20px;font-size:15px;font-weight:600;display:inline-flex}.btn:active{transform:scale(.96)}.btn-primary{background:var(--primary);color:#000}.btn-secondary{background:var(--bg-input);color:var(--text-main);border:1px solid var(--text-dim)}.btn-icon{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:8px;display:flex}.btn-icon:hover{color:var(--text-main);background:var(--bg-input)}input,select,textarea{background:var(--bg-input);border-radius:var(--radius-sm);color:var(--text-main);border:1px solid #0000;outline:none;width:100%;padding:12px;font-size:16px;transition:border-color .2s}input:focus,select:focus,textarea:focus{border-color:var(--primary)}.card{background:var(--bg-card);border-radius:var(--radius-lg);padding:var(--spacing-md);margin-bottom:var(--spacing-md);box-shadow:var(--shadow-card);border:var(--border-light)}.container{padding:var(--spacing-md);max-width:600px;margin:0 auto}h1{letter-spacing:-.5px;margin-bottom:var(--spacing-lg);font-size:24px;font-weight:800}h2{margin-bottom:var(--spacing-md);font-size:20px;font-weight:700}h3{color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;font-size:12px;font-weight:600}.page-header{margin-bottom:var(--spacing-lg);padding-top:var(--spacing-sm);justify-content:space-between;align-items:center;display:flex}.workout-header{gap:var(--spacing-sm);margin-bottom:var(--spacing-md);display:flex}.set-list{gap:var(--spacing-sm);flex-direction:column;display:flex}.set-row{gap:var(--spacing-sm);background:var(--bg-body);border-radius:var(--radius-sm);grid-template-columns:40px 1fr 1fr 40px;align-items:center;padding:8px;display:grid}.set-index{color:var(--text-muted);text-align:center;font-family:monospace;font-size:14px}.set-input-group{position:relative}.set-input-group span{color:var(--text-dim);pointer-events:none;font-size:12px;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.set-input-group input{text-align:center;padding-right:24px;font-family:monospace;font-weight:600}.timer-card{text-align:center;background:linear-gradient(145deg,#18181b,#09090b);border:1px solid #27272a;position:relative;overflow:hidden}.timer-display{color:var(--primary);margin:var(--spacing-md)0;text-shadow:0 0 20px var(--primary-dim);font-family:monospace;font-size:48px;font-weight:800}.timer-controls{gap:var(--spacing-md);grid-template-columns:1fr 1fr;display:grid}.history-item{position:relative;overflow:hidden}.history-date{color:var(--primary);text-transform:uppercase;margin-bottom:4px;font-size:12px;font-weight:600}.history-exercise{margin-bottom:8px;font-size:18px;font-weight:700}.history-sets{flex-wrap:wrap;gap:6px;display:flex}.tag{background:var(--bg-input);color:var(--text-muted);border:none;border-radius:4px;padding:4px 8px;font-family:monospace;font-size:12px}.bottom-nav{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:100;background:#18181bd9;border-top:1px solid #27272a;justify-content:space-around;width:100%;padding:12px 0 24px;display:flex;position:fixed;bottom:0;left:0}.nav-item{color:var(--text-muted);cursor:pointer;background:0 0;border:none;flex-direction:column;align-items:center;gap:4px;font-size:10px;transition:color .2s;display:flex}.nav-item.active{color:var(--primary)}.nav-icon{margin-bottom:2px;font-size:20px}.stats-grid{gap:var(--spacing-md);margin-bottom:var(--spacing-lg);grid-template-columns:1fr 1fr;display:grid}.stat-box{background:var(--bg-card);padding:var(--spacing-md);border-radius:var(--radius-md);text-align:center;border:var(--border-light)}.stat-value{color:var(--text-main);font-size:24px;font-weight:800}.stat-label{color:var(--text-muted);margin-top:4px;font-size:12px}.heatmap-container{margin-top:var(--spacing-md);flex-wrap:wrap;gap:4px;display:flex}.heatmap-cell{background:var(--bg-input);border-radius:2px;width:10px;height:10px}.heatmap-cell.active-1{background:#064e3b}.heatmap-cell.active-2{background:#065f46}.heatmap-cell.active-3{background:#10b981}.heatmap-cell.active-4{background:#34d399}.template-scroll{gap:var(--spacing-md);padding-bottom:var(--spacing-sm);margin-bottom:var(--spacing-lg);scrollbar-width:none;display:flex;overflow-x:auto}.template-scroll::-webkit-scrollbar{display:none}.template-card{background:var(--bg-card);border:1px solid var(--primary);border-radius:var(--radius-md);min-width:140px;padding:var(--spacing-md);cursor:pointer;flex-direction:column;justify-content:space-between;height:100px;display:flex}.template-name{font-size:14px;font-weight:700}.template-count{color:var(--text-muted);font-size:12px}.hidden{display:none}.text-center{text-align:center}.mt-4{margin-top:16px}.mb-4{margin-bottom:16px}