:root{--calm-1: #0891b2;--calm-2: #0e7490;--energy-1: #ea580c;--energy-2: #dc2626;--bg: #0f172a;--card: #1e293b;--text: #f1f5f9;--muted: #94a3b8;--accent: #38bdf8}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);overscroll-behavior:none}.app{min-height:100%;display:flex;flex-direction:column}.screen{flex:1;padding:env(safe-area-inset-top) 1rem calc(1rem + env(safe-area-inset-bottom));max-width:520px;margin:0 auto;width:100%}.setup h1{text-align:center;font-size:1.6rem;margin:1rem 0}.card{background:var(--card);border-radius:16px;padding:1rem;margin-bottom:1rem}.card h2{margin:0 0 .75rem;font-size:1rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}.card-header{display:flex;align-items:center;justify-content:space-between;width:100%;background:none;border:none;padding:0;margin:0;cursor:pointer;color:inherit}.card-header h2{margin:0}.chevron{color:var(--muted);font-size:1.1rem;transition:transform .2s ease;transform:rotate(-90deg)}.chevron.open{transform:rotate(0)}.card-body{margin-top:.75rem}.card-summary{margin:.6rem 0 0;color:var(--text);font-size:.9rem;opacity:.85}label{display:flex;flex-direction:column;gap:.3rem;margin-bottom:.75rem;font-size:.9rem;color:var(--muted)}input,select{background:#0f172a;border:1px solid #334155;border-radius:10px;padding:.7rem;color:var(--text);font-size:1rem}input:focus,select:focus{outline:none;border-color:var(--accent)}.btn{width:100%;padding:.85rem;border:none;border-radius:12px;background:#334155;color:var(--text);font-size:1rem;font-weight:600;cursor:pointer}.btn:disabled{opacity:.4}.btn.primary{background:var(--accent);color:#0f172a}.btn.big{padding:1.1rem;font-size:1.15rem}.btn.danger{background:var(--energy-2)}.ok{color:#4ade80}.err{color:#f87171}.hint{color:var(--muted);font-size:.85rem}.center{text-align:center}.stepper,.toggle-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem;gap:.5rem}.stepper span,.toggle-row span{font-size:.95rem}.stepper-ctrl{display:flex;align-items:center;gap:.4rem}.stepper-ctrl button{width:44px;height:44px;border-radius:10px;border:none;background:#334155;color:var(--text);font-size:1.4rem;cursor:pointer}.stepper-ctrl input{width:60px;text-align:center;-moz-appearance:textfield}.stepper-ctrl input::-webkit-outer-spin-button,.stepper-ctrl input::-webkit-inner-spin-button{-webkit-appearance:none}.toggle{display:flex;border-radius:10px;overflow:hidden;border:1px solid #334155}.toggle button{padding:.6rem 1rem;border:none;background:transparent;color:var(--muted);cursor:pointer}.toggle button.active.calm{background:var(--calm-1);color:#fff}.toggle button.active.energy{background:var(--energy-1);color:#fff}.player{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;transition:background .6s ease;gap:1rem}.player.phase-calm{background:linear-gradient(160deg,var(--calm-1),var(--calm-2))}.player.phase-energy{background:linear-gradient(160deg,var(--energy-1),var(--energy-2))}.player.prep{background:linear-gradient(160deg,#334155,#1e293b)}.interval-label{font-size:1rem;letter-spacing:.1em;opacity:.85}.phase-name{font-size:1.3rem;font-weight:800;letter-spacing:.15em}.timer{font-size:5rem;font-weight:800;font-variant-numeric:tabular-nums;line-height:1}.song-info{min-height:3rem}.song-title{font-size:1.2rem;font-weight:600}.song-artist{opacity:.85}.progress-bar{width:100%;height:8px;background:#ffffff40;border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:#fff;transition:width .25s linear}.controls{display:flex;gap:.6rem;width:100%}.ctrl{flex:1;padding:1rem .5rem;border:none;border-radius:12px;background:#fff3;color:#fff;font-size:1rem;font-weight:600;cursor:pointer;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.ctrl.stop{background:#0000004d}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;padding:1rem}.dialog{background:var(--card);border-radius:16px;padding:1.5rem;max-width:320px;width:100%;text-align:center}.dialog-btns{display:flex;gap:.6rem;margin-top:1rem}.done{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:1rem}.done-check{width:90px;height:90px;border-radius:50%;background:#22c55e;color:#fff;font-size:3rem;display:flex;align-items:center;justify-content:center}.summary p{font-size:1.2rem;margin:.3rem 0}