body{font-family:Arial,sans-serif;margin:0;padding:0;background-color:#f4f4f4;color:#333}.app-container{display:flex;flex-direction:column;align-items:center;width:100%;min-height:100vh;position:relative;padding:20px;box-sizing:border-box}.language-switcher{position:absolute;top:10px;right:10px;display:flex;gap:5px}.language-switcher button{padding:8px 12px;border:none;background-color:#e0e0e0;color:#333;border-radius:4px;cursor:pointer;transition:background-color .3s ease}.language-switcher button:hover{background-color:#d0d0d0}.workout-container{width:90%;max-width:700px;padding:20px;background-color:#fff;border-radius:12px;box-shadow:0 4px 8px #0000001a;text-align:center;margin-bottom:20px}.day-title{font-size:1.8em;margin-bottom:15px;color:#2c3e50}.workout-text{white-space:pre-line;text-align:left;line-height:1.6;color:#555}.progress-bar-container{width:90%;max-width:700px;height:8px;background-color:#e0e0e0;border-radius:4px;margin-bottom:15px}.progress-bar{height:100%;background-color:#2ecc71;border-radius:4px}.nav-buttons{display:flex;justify-content:space-between;width:90%;max-width:700px;margin-top:15px}.nav-buttons button{background-color:#3498db;color:#fff;border:none;border-radius:50%;width:40px;height:40px;font-size:1.2em;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background-color .3s ease}.nav-buttons button:disabled{background-color:#bdc3c7;cursor:not-allowed}.nav-buttons button:hover:not(:disabled){background-color:#2980b9}