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767px){.app-container{flex-direction:column}.main-content{padding:.75rem;padding-bottom:160px}.sidebar-content{order:2;max-height:300px;overflow-y:auto}}@media (max-width: 480px){.main-content{padding:.5rem;padding-bottom:180px}.sidebar-content{max-height:250px}.timer-container{padding:.5rem}}@media (max-width: 767px) and (orientation: landscape){.app-container{flex-direction:row}.workout-error{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:2rem;background-color:var(--color-bg)}.error-content{text-align:center;max-width:500px;padding:2rem;background-color:var(--color-surface);border-radius:12px;box-shadow:0 8px 32px #0000004d}.error-content h1{margin:0 0 1rem;font-size:2rem;font-weight:700;color:var(--color-error)}.error-icon{font-size:4rem;margin:1rem 0;animation:pulse 2s infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.error-message{font-size:1.1rem;margin:1rem 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1024px){.App{justify-content:center;align-items:center;padding:1rem}.app-container{flex-direction:row;max-width:1400px;width:100%;height:calc(100vh - 200px);max-height:800px;border-radius:16px;overflow:hidden;box-shadow:0 10px 30px #0000004d}.main-content{flex-basis:65%;padding:2rem;padding-bottom:140px}.sidebar-content{flex-basis:35%;max-height:none}}@media (min-width: 1440px){.app-container{max-width:1600px;height:calc(100vh - 220px);max-height:900px}}@media (min-width: 1920px){.app-container{max-width:1800px;height:calc(100vh - 240px);max-height:1000px}.countdown-display{font-size:7rem}.exercise-name{font-size:2.5rem}}main{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;min-height:0;overflow:hidden}.workout-selector{margin-bottom:1.5rem;width:100%;max-width:600px}.workout-selector>div{display:flex;gap:1rem;flex-wrap:wrap;align-items:center;justify-content:center}.workout-selector 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