.layout{display:flex;flex-direction:column;min-height:100vh}.header{background:#fff;border-bottom:1px solid var(--border-color);padding:1rem 0;position:sticky;top:0;z-index:100;box-shadow:0 2px 4px #0000000d}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:.5rem;font-size:1.25rem;font-weight:700;color:var(--text-dark);text-decoration:none}.logo:hover{text-decoration:none}.logo-icon{font-size:1.75rem}.nav{display:flex;gap:2rem}.nav-link{color:var(--text-light);font-weight:500;padding:.5rem 0;border-bottom:2px solid transparent;transition:all .2s}.nav-link:hover{color:var(--primary-color);text-decoration:none}.nav-link.active{color:var(--primary-color);border-bottom-color:var(--primary-color)}.nav-link-button{background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%);color:#fff!important;padding:.5rem 1.25rem!important;border-radius:8px;border-bottom:none!important;font-weight:600;transition:all .2s}.nav-link-button:hover{transform:translateY(-1px);box-shadow:0 4px 8px #667eea4d;color:#fff!important}.nav-link-button.active{color:#fff!important;border-bottom:none!important;box-shadow:0 2px 4px #667eea33}.main{flex:1;padding:2rem 0}.footer{background:var(--background-light);border-top:1px solid var(--border-color);padding:2rem 0;margin-top:4rem;text-align:center;color:var(--text-light);font-size:.875rem}.footer a{color:var(--primary-color)}@media(max-width:768px){.header-content{flex-direction:column;gap:1rem}.nav{gap:1rem}}.app{min-height:100vh}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f5f5f5;color:#333}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}:root{--strava-orange: #FC4C02;--primary-color: #667eea;--secondary-color: #764ba2;--text-dark: #2d3748;--text-light: #718096;--border-color: #e2e8f0;--background-white: #ffffff;--background-light: #f7fafc;--success-green: #48bb78;--error-red: #f56565}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}button:disabled{opacity:.6;cursor:not-allowed}