:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;color:#fff;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9;color:#213547}}.App{position:fixed;inset:0;display:grid;place-items:center;padding:2rem;box-sizing:border-box;overflow:auto;text-align:center}.app-header{margin-bottom:3rem}.app-header h1{color:#ff6b35;font-size:3.5rem;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.tagline{font-size:1.2rem;color:#666;margin-bottom:0;font-style:italic}.main-content{display:flex;flex-direction:column;gap:3rem;margin-bottom:3rem}.welcome-section{background:linear-gradient(135deg,#667eea,#764ba2);padding:3rem 2rem;border-radius:12px;color:#fff;box-shadow:0 8px 32px #0000001a}.welcome-section h2{margin-top:0;font-size:2.2rem}.welcome-section p{font-size:1.1rem;line-height:1.6;max-width:900px;margin:0 auto 1.5rem}.welcome-section button{cursor:pointer;transition:all .3s ease}.welcome-section button:hover{transform:translateY(-2px)}.welcome-section button:active{transform:translateY(0)}.app-footer{margin-top:4rem;padding:2rem;color:#666;border-top:1px solid #eee;font-size:.9rem}@media (prefers-color-scheme: dark){.app-footer{border-top-color:#444;color:#ccc}}@media (min-width: 1024px){.App{padding:3rem 4rem}.welcome-section{padding:4rem 3rem}}@media (max-width: 768px){.App{padding:1rem}.app-header h1{font-size:2.5rem}.welcome-section{padding:2rem 1.5rem}.welcome-section h2{font-size:1.8rem}}// Hamburger Menu Component .hamburger-menu{position:fixed;top:20px;left:20px;z-index:1000}.hamburger-button{position:fixed;top:20px;left:20px;z-index:1002;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;width:50px;height:50px;cursor:pointer;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;box-shadow:0 4px 15px #667eea66;transition:all .3s ease}.hamburger-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #667eea99}.hamburger-button:active{transform:translateY(0)}.hamburger-button.open{opacity:0;pointer-events:none}.hamburger-button span{width:25px;height:3px;background:#fff;border-radius:2px;transition:all .3s ease}.hamburger-button.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}.hamburger-button.open span:nth-child(2){opacity:0}.hamburger-button.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.sidebar-overlay{position:fixed;inset:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;opacity:0;pointer-events:none;transition:opacity .3s ease}.sidebar-overlay.open{opacity:1;pointer-events:all}.side-panel{position:fixed;top:0;left:0;bottom:0;width:300px;max-width:85vw;background:#fff;box-shadow:4px 0 20px #00000026;z-index:1001;transform:translate(-100%);transition:transform .3s ease;display:flex;flex-direction:column;overflow:hidden}.side-panel.open{transform:translate(0)}.side-panel-header{display:flex;justify-content:space-between;align-items:center;padding:20px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.side-panel-header h2{margin:0;font-size:1.5rem;font-weight:700}.close-button{background:#fff3;border:none;border-radius:8px;width:36px;height:36px;color:#fff;font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s ease}.close-button:hover{background:#ffffff4d}.side-panel-content{flex:1;overflow-y:auto;display:flex;flex-direction:column}.user-info{padding:24px 20px;border-bottom:1px solid #f0f0f0;display:flex;align-items:center;gap:15px}.user-avatar{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;flex-shrink:0}.user-details{flex:1;min-width:0}.user-info-name{font-weight:600;font-size:16px;margin-bottom:4px;color:#2c3e50}.user-info-email{font-size:13px;color:#666;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.guest-welcome{padding:30px 20px;text-align:center;border-bottom:1px solid #f0f0f0}.guest-welcome h3{margin:0 0 10px;color:#2c3e50;font-size:1.5rem}.guest-welcome p{margin:0;color:#666;font-size:14px}.side-panel-nav{flex:1;padding:10px 0}.menu-item{padding:16px 20px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;gap:15px;color:#2c3e50;border-left:3px solid transparent}.menu-item:hover{background:#f8f9fa;border-left-color:#667eea}.menu-item:active{background:#e9ecef}.menu-item.primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;margin:10px 15px;border-radius:8px;border-left:none;font-weight:600}.menu-item.primary:hover{background:linear-gradient(135deg,#5568d3,#653a8b);transform:translateY(-1px);box-shadow:0 4px 12px #667eea4d}.menu-item-icon{font-size:20px;pointer-events:none;flex-shrink:0}.menu-item-text{font-size:15px;font-weight:500;pointer-events:none}.side-panel-footer{border-top:1px solid #f0f0f0;padding:10px 0;margin-top:auto}.menu-item.logout{color:#dc3545}.menu-item.logout:hover{background:#fff5f5;border-left-color:#dc3545}@media (prefers-color-scheme: dark){.side-panel{background:#1e1e1e;box-shadow:4px 0 20px #00000080}.user-info,.guest-welcome,.side-panel-footer{border-color:#333}.user-info-name,.guest-welcome h3{color:#e0e0e0}.user-info-email,.guest-welcome p{color:#999}.menu-item{color:#e0e0e0}.menu-item:hover{background:#2a2a2a}.menu-item:active{background:#333}.menu-item.logout{color:#ff6b6b}.menu-item.logout:hover{background:#2a1a1a;border-left-color:#ff6b6b}.sidebar-overlay{background:#000000b3}}@media (max-width: 768px){.side-panel{width:280px}.hamburger-button{top:15px;left:15px}}.auth-container{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:2rem;box-sizing:border-box;background:linear-gradient(135deg,#667eea,#764ba2);overflow:auto}.back-button{position:absolute;top:20px;left:20px;background:#fff3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;transition:all .3s ease}.back-button:hover{background:#ffffff4d;transform:translate(-2px)}.auth-card{background:#fff;border-radius:16px;padding:2.5rem;max-width:500px;width:100%;box-shadow:0 20px 60px #0000004d}.auth-header{text-align:center;margin-bottom:2rem}.auth-title{font-size:2rem;font-weight:700;color:#2c3e50;margin:0 0 .5rem}.auth-subtitle{color:#666;font-size:1rem;margin:0}.signup-progress{display:flex;align-items:center;justify-content:center;margin-bottom:2rem;padding-bottom:2rem;border-bottom:2px solid #f0f0f0}.progress-step{display:flex;flex-direction:column;align-items:center;gap:8px;color:#999;font-size:14px;font-weight:500;transition:all .3s ease}.progress-step.active{color:#667eea}.progress-circle{width:40px;height:40px;border-radius:50%;background:#e0e0e0;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;transition:all .3s ease}.progress-step.active .progress-circle{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 4px 12px #667eea66}.progress-line{width:80px;height:3px;background:#e0e0e0;margin:0 1rem;position:relative;top:-12px}.auth-form{display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-label{font-weight:600;color:#2c3e50;font-size:.9rem}.form-input{padding:12px 16px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:all .3s ease;background:#fff}.form-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-input:disabled{background:#f5f5f5;cursor:not-allowed}.form-input::placeholder{color:#999}.form-hint{color:#666;font-size:.85rem;margin-top:-.5rem;font-style:italic}select.form-input{cursor:pointer}.auth-error{background:#fee;border:1px solid #fcc;color:#c33;padding:12px 16px;border-radius:8px;font-size:.9rem;text-align:center}.auth-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:14px 24px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;margin-top:.5rem}.auth-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}.auth-button:active:not(:disabled){transform:translateY(0)}.auth-button:disabled{opacity:.6;cursor:not-allowed}.auth-footer{text-align:center;margin-top:1.5rem;color:#666;font-size:.9rem}.auth-link{color:#667eea;font-weight:600;cursor:pointer;text-decoration:none;transition:color .2s ease}.auth-link:hover{color:#764ba2;text-decoration:underline}.profile-form .form-group{gap:.3rem}@media (min-width: 1024px){.auth-card{max-width:550px;padding:50px}.auth-title{font-size:32px}}@media (max-width: 768px){.auth-container{padding:1rem}.auth-card{padding:2rem 1.5rem}.auth-title{font-size:1.5rem}.form-row{grid-template-columns:1fr}.signup-progress{transform:scale(.9)}.progress-line{width:60px}.back-button{top:10px;left:10px;padding:8px 16px;font-size:13px}}@media (prefers-color-scheme: dark){.auth-card{background:#2d2d2d}.auth-title{color:#e0e0e0}.auth-subtitle,.form-hint,.auth-footer{color:#999}.form-label{color:#e0e0e0}.form-input{background:#1e1e1e;border-color:#444;color:#e0e0e0}.form-input:focus{background:#1e1e1e;border-color:#667eea}.form-input:disabled{background:#333}.signup-progress{border-bottom-color:#444}}.profile-container{position:fixed;inset:0;display:flex;justify-content:center;align-items:flex-start;padding:5rem 2rem 3rem;box-sizing:border-box;background:#f5f7fa;overflow:auto}.profile-content{max-width:1400px;margin:0 auto}.profile-header{background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem;border-radius:16px;display:flex;align-items:center;gap:1.5rem;margin-bottom:2rem;box-shadow:0 8px 32px #0000001a;position:relative}.profile-avatar{width:80px;height:80px;border-radius:50%;background:#fff3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;font-size:2.5rem;color:#fff;font-weight:700;border:3px solid rgba(255,255,255,.3)}.profile-info{flex:1;color:#fff}.profile-info h1{margin:0 0 .5rem;font-size:2rem;font-weight:700}.profile-info p{margin:0;opacity:.9;font-size:1rem}.profile-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:30px;margin-bottom:30px}.profile-card{background:#fff;border-radius:20px;padding:30px;box-shadow:0 10px 40px #0000001a;transition:transform .3s ease,box-shadow .3s ease}.profile-card:hover{transform:translateY(-4px);box-shadow:0 12px 48px #00000026}.card-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.card-icon{font-size:24px}.card-title{font-size:20px;font-weight:700;color:#2c3e50}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.stat-item{text-align:center;padding:20px;background:#f8f9fa;border-radius:12px;transition:all .3s ease}.stat-item:hover{background:#e9ecef;transform:scale(1.05)}.stat-value{font-size:32px;font-weight:700;color:#667eea;margin-bottom:8px}.stat-label{font-size:14px;color:#7f8c8d;font-weight:600}.progress-chart{width:100%;height:300px;margin-top:20px}.ai-insight-box{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:16px;padding:24px;color:#fff;position:relative;overflow:hidden}.ai-insight-box:before{content:"✨";position:absolute;font-size:100px;opacity:.1;right:-10px;top:-10px}.ai-insight-header{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-weight:700;font-size:18px}.ai-insight-content{font-size:15px;line-height:1.6;position:relative;z-index:1}.no-data-message{text-align:center;padding:40px;color:#7f8c8d}.no-data-icon{font-size:64px;margin-bottom:16px}.create-profile-button{margin-top:20px;padding:12px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:all .3s ease}.create-profile-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #667eea66}.create-profile-button:active{transform:translateY(0)}.loading-spinner{display:flex;justify-content:center;align-items:center;min-height:300px;font-size:18px;color:#fff}.back-button{position:fixed;top:16px;left:16px;z-index:1000;cursor:pointer;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-size:14px;font-weight:600;box-shadow:0 4px 12px #00000026;transition:all .3s ease}.back-button:hover{background:linear-gradient(135deg,#5a6ce6,#6a3fb1);transform:translateY(-2px)}.back-button:active{transform:translateY(0)}.add-measurement-btn{background:#fff;color:#667eea;border:none;padding:12px 24px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #0000001a}.add-measurement-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #00000026}.add-measurement-btn:active{transform:translateY(0)}.modal-overlay{position:fixed;inset:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:2000;display:flex;align-items:center;justify-content:center;padding:1rem}.modal-content{background:#fff;border-radius:16px;max-width:500px;width:100%;box-shadow:0 20px 60px #0000004d;max-height:90vh;overflow-y:auto}.modal-header{padding:1.5rem 2rem;border-bottom:2px solid #f0f0f0;display:flex;justify-content:space-between;align-items:center}.modal-header h2{margin:0;font-size:1.5rem;color:#2c3e50}.modal-close{background:#f0f0f0;border:none;border-radius:8px;width:36px;height:36px;font-size:20px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.modal-close:hover{background:#e0e0e0}.measurement-form{padding:2rem}.measurement-error{background:#fee;border:1px solid #fcc;color:#c33;padding:12px 16px;border-radius:8px;font-size:.9rem;margin-bottom:1rem}.measurement-form .form-group{margin-bottom:1.5rem}.measurement-form .form-label{display:block;font-weight:600;color:#2c3e50;margin-bottom:.5rem;font-size:.9rem}.measurement-form .form-input{width:100%;padding:12px 16px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:all .3s ease;box-sizing:border-box}.measurement-form .form-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.measurement-form textarea.form-input{resize:vertical;font-family:inherit}.modal-actions{display:flex;gap:1rem;justify-content:flex-end;margin-top:2rem}.btn-primary,.btn-secondary{padding:12px 24px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;border:none}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #667eea66}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{background:#e0e0e0;color:#2c3e50}.btn-secondary:hover:not(:disabled){background:#d0d0d0}.btn-secondary:disabled{opacity:.6;cursor:not-allowed}@media (min-width: 1200px){.profile-content{padding:0 40px}.profile-grid{grid-template-columns:repeat(2,1fr)}.progress-chart{height:350px}}@media (max-width: 1024px){.profile-grid{grid-template-columns:1fr}}@media (max-width: 768px){.profile-container{padding:60px 15px 30px}.profile-header{flex-direction:column;text-align:center;padding:25px 20px}.profile-avatar{width:80px;height:80px;font-size:36px}.profile-info h1{font-size:24px}.profile-grid{grid-template-columns:1fr;gap:20px}.stats-grid{grid-template-columns:1fr}.progress-chart{height:250px}.profile-card{padding:20px}}