#MainPage{display:flex;flex-direction:column;min-height:100vh;padding:20px;max-width:400px;margin:0 auto;width:100%;box-sizing:border-box;background:#fafafa}body{margin:0;padding:0;min-height:100vh;background:#fafafa;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:#1a1a1a}#Header{margin-bottom:40px}#Content{flex:1;display:flex;flex-direction:column;justify-content:center;gap:16px}.main-buttons{display:flex;flex-direction:column;gap:16px}.main-btn{width:100%;height:56px;border:none;border-radius:8px;font-size:16px;font-weight:500;background:#fff;color:#1a1a1a;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 1px 3px #0000001a;border:1px solid #e5e5e5}.main-btn:hover{background:#f5f5f5;transform:translateY(-1px);box-shadow:0 2px 8px #00000026}.main-btn:active{transform:translateY(0)}.btn-icon{font-size:18px;width:18px;height:18px;display:flex;align-items:center;justify-content:center}.measure-icon:before{content:"▶";color:#007aff}.register-icon:before{content:"+";color:#34c759;font-weight:600}.delete-icon:before{content:"×";color:#ff3b30;font-weight:600;font-size:20px}.language-selector{display:flex;justify-content:center;gap:4px;background:#fff;border-radius:8px;padding:4px;box-shadow:0 1px 3px #0000001a;border:1px solid #e5e5e5;width:fit-content;margin:0 auto}.lang-btn{padding:8px 16px;border:none;background:transparent;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;color:#666}.lang-btn:hover{background:#f5f5f5}.lang-btn.selected{background:#007aff;color:#fff}@media (max-width: 480px){#MainPage{padding:16px}.main-btn{height:52px;font-size:15px}}