:root{font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:#171717;font-optical-sizing:auto;background:#f5f5f5;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{min-width:320px;min-height:100%}body{min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}button{-webkit-tap-highlight-color:transparent}#root{min-height:100vh}.setup-screen{color:#171717;background:#f5f5f5;justify-content:center;min-height:100vh;padding:32px 20px;display:flex}.setup-content{width:100%;max-width:460px}.setup-header{margin-bottom:48px}.brand{letter-spacing:3px;font-size:14px;font-weight:900}.setup-header p{letter-spacing:1.5px;color:#737373;font-size:11px}.setup-title{margin-bottom:32px}.setup-title h1{margin:0 0 8px;font-size:32px}.setup-title p{color:#737373;margin:0}.setup-form{flex-direction:column;gap:20px;display:flex}.form-field{flex-direction:column;gap:8px;font-size:14px;font-weight:600;display:flex}.form-field input{color:#171717;width:100%;font:inherit;background:#fff;border:1px solid #d4d4d4;border-radius:12px;padding:16px;font-size:20px}.button{min-height:56px;font:inherit;cursor:pointer;border:0;border-radius:12px;padding:14px 20px;font-size:16px;font-weight:700}.button:focus-visible{outline-offset:3px;outline:3px solid #737373}.button-primary{color:#fff;background:#171717}.button-secondary{color:inherit;background:#ffffff24;border:1px solid}.start-button{width:100%;margin-top:12px}.timer-screen{flex-direction:column;min-height:100dvh;padding:24px;transition:background-color .15s;display:flex}.timer-screen.exercise{color:#fff;background:#167b59}.timer-screen.rest{color:#fff;background:#c93f36}.timer-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.status-label{letter-spacing:1px;font-size:11px;font-weight:700}.timer-content{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;width:100%;max-width:700px;margin:0 auto;display:flex}.phase-label{letter-spacing:4px;margin:0 0 12px;font-size:clamp(20px,4vw,28px);font-weight:800}.timer-display{letter-spacing:-5px;font-variant-numeric:tabular-nums;margin:12px 0;font-size:clamp(88px,22vw,190px);font-weight:800;line-height:1}.round-label{letter-spacing:2px;margin:20px 0 40px;font-size:clamp(15px,3vw,20px);font-weight:700}.timer-controls{flex-direction:column;gap:12px;width:100%;max-width:360px;display:flex}.timer-controls .button-primary{color:#171717;background:#fff}.timer-controls .button-secondary{border-color:#ffffffa6}.timer-help{opacity:.85;margin-top:24px;font-size:14px}.finished-title{margin:8px 0;font-size:clamp(32px,8vw,52px)}@media (width>=600px){.timer-screen{padding:32px 48px}.timer-controls{max-width:400px}}.back-button{color:inherit;cursor:pointer;background:0 0;border:1px solid #ffffffa6;border-radius:10px;min-height:44px;padding:10px 14px;font-size:14px;font-weight:700}.back-button:focus-visible{outline-offset:3px;outline:3px solid #fff}@media (prefers-reduced-motion:reduce){.timer-screen{transition:none}}