@font-face{font-family:Archivo Narrow;src:url("/fonts/archivo-narrow-latin-variable.woff2")format("woff2");font-weight:100 900;font-display:swap}.brainwave-practice{background:var(--theme-canvas,#05080d);height:100%;min-height:0;color:var(--theme-text,#fff);box-sizing:border-box;flex-direction:column;padding:clamp(18px,3vw,38px);font-family:Archivo Narrow,sans-serif;display:flex;overflow:auto}.brainwave-top{justify-content:space-between;align-items:start;gap:20px;width:100%;max-width:1000px;margin:0 auto;display:flex}.brainwave-top span{letter-spacing:.06em;color:var(--wave-color);font:700 12px/1.2 ui-monospace,Consolas,monospace}.brainwave-top h1{text-transform:uppercase;letter-spacing:-.03em;margin:10px 0 7px;font-size:clamp(38px,5vw,70px);line-height:1}.brainwave-top p{color:var(--theme-muted,#bbc9d7);margin:0;font-size:16px}.brainwave-exit,.brainwave-controls button{border:1px solid var(--theme-line,#53616d);background:var(--theme-surface,#0d1620);min-height:44px;color:var(--theme-text,#fff);cursor:pointer;border-radius:10px;padding:10px 18px;font-family:inherit;font-size:14px;font-weight:700}.brainwave-exit:hover,.brainwave-controls button:hover{border-color:var(--wave-color)}.brainwave-exit:focus-visible,.brainwave-controls button:focus-visible,.brainwave-controls input:focus-visible{outline-offset:3px;outline:2px solid #4dde1f}.brainwave-main{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:8px;width:min(100%,900px);min-height:250px;margin:0 auto;display:flex}.brainwave-readout{text-align:center;flex-direction:column;align-items:center;gap:5px;display:flex}.brainwave-readout strong{color:var(--wave-color);font-variant-numeric:tabular-nums;font-size:clamp(42px,7vw,84px);line-height:1}.brainwave-readout span{color:var(--theme-text,#d2dce5);font-size:16px}.brainwave-art{width:min(100%,680px);height:clamp(125px,30vh,285px);overflow:visible}.brainwave-art path{fill:none;stroke:var(--wave-color);stroke-width:2.4px;stroke-linecap:round;opacity:.65;animation:8s ease-in-out infinite alternate brainwave-drift}.brainwave-art path:nth-child(2){opacity:.33;animation-duration:11s}.brainwave-art path:nth-child(3){opacity:.18;animation-duration:13s}@keyframes brainwave-drift{to{transform:translate(14px)}}.brainwave-sequence{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;width:min(100%,520px);margin:0;padding:0;list-style:none;display:grid}.brainwave-sequence li{border-top:1px solid var(--theme-line,#354451);color:var(--theme-muted,#94a6b8);flex-direction:column;align-items:center;gap:3px;padding:10px 7px;font-size:12px;display:flex}.brainwave-sequence li[aria-current=step]{border-color:var(--wave-color);color:var(--theme-text,#fff)}.brainwave-sequence strong{font-variant-numeric:tabular-nums;font-size:18px}.brainwave-note{max-width:62ch;color:var(--theme-muted,#aab9c8);text-align:center;margin:4px 0 0;font-size:13px;line-height:1.5}.brainwave-controls{border-top:1px solid var(--theme-line,#354451);flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;width:100%;max-width:1000px;margin:0 auto;padding-top:16px;display:flex}.brainwave-controls label{color:var(--theme-text,#d2dce5);align-items:center;gap:10px;font-size:14px;display:flex}.brainwave-controls input{accent-color:#4dde1f;width:120px}.brainwave-progress{align-items:center;gap:12px;width:min(100%,220px);display:flex}.brainwave-progress progress{width:100%;height:10px;accent-color:var(--wave-color)}.brainwave-progress time{font-variant-numeric:tabular-nums;font:700 16px/1 ui-monospace,Consolas,monospace}.brainwave-controls [role=status]{color:#ffaca6;text-align:center;flex-basis:100%;margin:0;font-size:13px}@media (width<=620px){.brainwave-practice{padding:18px 16px 24px}.brainwave-top h1{font-size:39px}.brainwave-main{min-height:290px}.brainwave-exit{padding:8px 10px;font-size:12px}.brainwave-controls{justify-content:space-between}.brainwave-controls button{flex:1}.brainwave-progress{width:100%}.brainwave-art{height:190px}}@media (prefers-reduced-motion:reduce){.brainwave-art path{animation:none}}