:root{--bg: #0f1720;--card: #1a2530;--card-alt: #22303c;--text: #e8edf2;--text-dim: #8fa3b3;--water: #3d9de0;--breathe: #3d9de0;--exercise: #3d9de0;--accent: #3d9de0;--success: #3ecf8e;--danger: #e0625a;--border: #24313e;--border-strong: #2e4152;--radius: 18px;--radius-sm: 12px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased;padding-bottom:100px}.app{max-width:480px;margin:0 auto;padding:20px 16px}header.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}header.topbar h1{font-size:20px;font-weight:600;margin:0}.icon-btn{background:var(--card);border:1px solid var(--border);border-radius:999px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--text-dim);font-size:18px;text-decoration:none}.section{background:var(--card);border-radius:var(--radius);padding:18px;margin-bottom:16px;border:1px solid var(--border)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.section-header h2{font-size:15px;font-weight:600;margin:0;color:var(--text-dim);text-transform:uppercase;letter-spacing:.04em}.tracker-row{display:flex;gap:14px}.ring-card{flex:1;background:var(--card-alt);border-radius:var(--radius-sm);padding:14px;text-align:center}.ring-wrap{position:relative;width:84px;height:84px;margin:0 auto 8px}.ring-wrap svg{transform:rotate(-90deg)}.ring-value{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.2;text-align:center}.ring-pct{font-size:15px;font-weight:700}.ring-amount{font-size:10.5px;font-weight:500;color:var(--text-dim)}.ring-label{font-size:12px;color:var(--text-dim)}.quick-buttons{display:flex;gap:8px;margin-top:12px}.qbtn{flex:1;background:var(--card);border:1px solid var(--border);color:var(--text);border-radius:var(--radius-sm);padding:10px 0;font-size:14px;font-weight:600}.qbtn:active{transform:scale(.97)}.qbtn.accent{background:var(--accent);border-color:var(--accent);color:#0f1720}.reset-link{display:block;width:100%;background:none;border:none;color:var(--text-dim);font-size:11.5px;text-decoration:underline;margin-top:8px;padding:4px 0 0}.exercise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.exercise-tile{background:var(--card-alt);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 8px;text-align:center;min-height:84px;display:flex;flex-direction:column;justify-content:center;gap:6px}.exercise-tile.done{border-color:var(--success);background:#3ecf8e1f}.exercise-tile .name{font-size:12.5px;font-weight:600;line-height:1.2}.exercise-tile .progress{font-size:11px;color:var(--text-dim)}.exercise-tile.done .progress{color:var(--success)}.empty-hint{font-size:13px;color:var(--text-dim);text-align:center;padding:8px 0}.sheet-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:none;z-index:40}.sheet-overlay.open{display:block}.sheet{position:fixed;left:0;right:0;bottom:0;background:var(--card);border-radius:20px 20px 0 0;z-index:41;max-height:80vh;display:flex;flex-direction:column;transform:translateY(100%);transition:transform .25s ease}.sheet.open{transform:translateY(0)}.sheet-header{flex:0 0 auto;padding:16px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.sheet-header h3{margin:0;font-size:16px}.sheet-body{flex:1 1 auto;overflow-y:auto;padding:16px}input,select{font-size:16px;background:var(--card-alt);border:1px solid var(--border);color:var(--text);border-radius:var(--radius-sm);padding:10px 12px;width:100%}label{font-size:13px;color:var(--text-dim);display:block;margin:12px 0 6px}.chip-row{display:flex;gap:8px;flex-wrap:wrap}.chip{background:var(--card-alt);border:1px solid var(--border);border-radius:999px;padding:7px 12px;font-size:13px;color:var(--text-dim)}.chip.active{border-color:var(--accent);color:var(--accent)}.primary-btn{width:100%;background:var(--accent);color:#0f1720;border:none;border-radius:var(--radius-sm);padding:13px;font-weight:700;font-size:15px;margin-top:16px}.toast{position:fixed;bottom:20px;left:50%;transform:translate(-50%);background:var(--card-alt);border:1px solid var(--border);padding:10px 16px;border-radius:999px;font-size:13px;z-index:50;opacity:0;pointer-events:none;transition:opacity .2s}.toast.show{opacity:1}