.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}.auth-card{background:#fff;border-radius:16px;padding:3rem;box-shadow:0 10px 40px #0000001a;width:100%;max-width:400px}.auth-title{text-align:center;font-size:2rem;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem}.auth-subtitle{text-align:center;color:#666;margin-bottom:2rem}.auth-form{display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;color:#333}.form-group input{padding:.75rem;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:border-color .3s}.form-group 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.3s}.stat-card:hover{transform:translateY(-4px)}.stat-value{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{color:#666;margin-top:.5rem;font-size:.9rem}.empty-state h2{margin:1rem 0 .5rem;color:#333}.btn-primary{display:inline-flex;align-items:center;gap:.5rem;margin-top:1.5rem;padding:.75rem 1.5rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-decoration:none;border-radius:8px;font-weight:500;transition:transform .2s}.habits-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.habit-card{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:1.5rem;border-radius:12px;border:3px solid;box-shadow:0 4px 6px #0000001a;transition:transform .3s,box-shadow .3s}.habit-card:hover{transform:translateY(-4px);box-shadow:0 8px 12px #00000026}.habit-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}.habit-icon{font-size:2rem}.habit-header h3{font-size:1.3rem;color:#333;margin:0}.habit-description{color:#666;margin-bottom:1rem;font-size:.9rem}.checkin-btn{width:100%;padding:.75rem;border:none;border-radius:8px;color:#fff;font-size:1rem;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem;transition:opacity .3s,transform .2s}.checkin-btn:hover:not(:disabled){opacity:.9;transform:scale(1.02)}.checkin-btn:disabled{opacity:.7;cursor:not-allowed}.checkin-btn.checked{background:#4caf50!important}@media (max-width: 768px){.habits-grid{grid-template-columns:1fr}.stats-cards{grid-template-columns:repeat(2,1fr)}}.habits-page{max-width:1200px;margin:0 auto}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;color:#fff}.page-header h1{font-size:2rem;text-shadow:2px 2px 4px 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