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1px;min-height:48px;border-radius:var(--r-md);color:var(--text-3);font-size:clamp(10px,2.7vw,11.5px);font-weight:700;letter-spacing:-.02em;line-height:1.05;transition:background var(--t-base),color var(--t-base),box-shadow var(--t-base)}.bottom-nav button>svg,.bottom-nav button>:first-child{width:20px;height:20px;flex-shrink:0}.bottom-nav button>span{display:block;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 2px}.bottom-nav button.active{background:var(--brand);color:var(--on-brand);box-shadow:var(--glow-brand);transform:none}.bottom-nav button:active:not(.active){background:var(--surface-2);transform:scale(.97)}.sheet-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:50;animation:fade-in .2s ease}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-up{0%{transform:translate(-50%,100%)}to{transform:translate(-50%)}}.sheet{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:var(--max-w);max-height:85vh;z-index:51;background:var(--bg-2);border-top-left-radius:var(--r-2xl);border-top-right-radius:var(--r-2xl);border-top:1px solid var(--border-strong);padding:14px 20px calc(28px + var(--safe-bottom));display:flex;flex-direction:column;gap:16px;animation:slide-up .3s cubic-bezier(.4,0,.2,1);overflow-y:auto}.sheet:before{content:"";display:block;width:36px;height:4px;background:var(--surface-3);border-radius:var(--r-pill);margin:4px auto 6px}.sheet h2{margin:0 0 4px;font-size:18px;font-weight:800}.sheet .group{display:flex;flex-direction:column;gap:8px}.sheet .group-label{color:var(--text-3);font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.sheet .pill-row{display:flex;flex-wrap:wrap;gap:6px}.sheet .pill-row button{padding:8px 14px;border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--border);color:var(--text-3);font-size:12.5px;font-weight:700;transition:all var(--t-base)}.sheet .pill-row button.active{background:var(--brand);color:var(--on-brand);border-color:var(--brand);box-shadow:var(--glow-brand)}.fab{position:fixed;bottom:calc(var(--nav-h) + 18px + var(--safe-bottom));right:max(20px,calc(50% - var(--max-w) / 2 + 20px));z-index:35;width:56px;height:56px;border-radius:var(--r-pill);background:var(--brand);color:var(--on-brand);display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--glow-brand),var(--sh-lg);transition:transform var(--t-snap)}.fab:active{transform:scale(.92)}.empty-line{color:var(--text-muted);font-size:13px;padding:16px 0;text-align:center;margin:0}.empty-line.padded{padding:32px 0}.status-line{font-size:12px;color:var(--text-3);margin:0}.flex-1{flex:1}.row-flex{display:flex;align-items:center;gap:8px}.gap-sm{gap:6px}.gap-md{gap:12px}.gap-lg{gap:16px}.list{display:flex;flex-direction:column;gap:10px}.divider{height:1px;background:var(--border);margin:8px 0}@media(min-width:720px){.stat-grid{grid-template-columns:repeat(4,1fr)}.practice-controls{grid-template-columns:1fr 1fr 1fr}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}