*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;color:#333}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:#fffffff2;padding:1rem 2rem;box-shadow:0 2px 10px #0000001a;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.app-header h1{font-size:2rem;color:#4a5568;text-shadow:2px 2px 4px rgba(0,0,0,.1)}.navigation{background:#ffffffe6;padding:1rem 2rem;display:flex;gap:2rem;align-items:center;flex-wrap:wrap;border-bottom:1px solid rgba(0,0,0,.1)}.nav-link{text-decoration:none;color:#4a5568;font-weight:600;padding:.5rem 1rem;border-radius:8px;transition:all .3s ease;border:2px solid transparent}.nav-link:hover{background:#667eea;color:#fff;transform:translateY(-2px)}.nav-link.active{background:#764ba2;color:#fff;border-color:#5a4a7a}.submit-button{background:linear-gradient(45deg,#ff6b6b,#ee5a24);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:25px;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #ee5a2466}.submit-button:hover{transform:translateY(-3px);box-shadow:0 6px 20px #ee5a2499}.main-content{flex:1;padding:2rem}.page-container{max-width:1200px;margin:0 auto}.page-title{text-align:center;font-size:2.5rem;margin-bottom:2rem;color:#fff;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:2rem;margin-top:2rem}.cat-card{background:#fff;border-radius:15px;overflow:hidden;box-shadow:0 8px 25px #00000026;transition:all .3s ease;cursor:pointer}.cat-card:hover{transform:translateY(-8px) scale(1.02);box-shadow:0 15px 35px #00000040}.cat-image{width:100%;height:200px;-o-object-fit:cover;object-fit:cover;transition:transform .3s ease}.cat-card:hover .cat-image{transform:scale(1.1)}.cat-info{padding:1rem;text-align:center}.cat-name{font-size:1.2rem;font-weight:700;color:#4a5568;margin-bottom:.5rem}.cat-clicks{color:#667eea;font-weight:600}.user-selector{display:flex;align-items:center;gap:.5rem}.user-selector label{font-weight:600;color:#4a5568}.user-selector select{padding:.5rem 1rem;border:2px solid #e2e8f0;border-radius:8px;background:#fff;color:#4a5568;font-weight:500;cursor:pointer;transition:border-color .3s ease}.user-selector select:focus{outline:none;border-color:#667eea}.day-theme{background:linear-gradient(135deg,#ffecd2,#fcb69f)}.night-theme{background:linear-gradient(135deg,#2c3e50,#34495e)}.night-theme .page-title,.night-theme .nav-link{color:#ecf0f1}.night-theme .cat-card{background:#fffffff2}@media (max-width: 768px){.app-header{flex-direction:column;text-align:center}.navigation{flex-direction:column;align-items:center}.cat-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}.main-content{padding:1rem}}.app-footer{background:#fffffff2;padding:1.5rem 2rem;margin-top:auto;border-top:1px solid rgba(0,0,0,.1);box-shadow:0 -2px 10px #0000001a}.footer-content{max-width:1200px;margin:0 auto;text-align:center}.footer-text{color:#4a5568;margin-bottom:.5rem;font-size:.9rem}.footer-links{display:flex;justify-content:center;align-items:center;gap:1rem}.footer-link{color:#667eea;text-decoration:none;font-weight:500;transition:color .3s ease}.footer-link:hover{color:#764ba2;text-decoration:underline}.footer-separator{color:#a0aec0}@media (max-width: 768px){.app-header{flex-direction:column;text-align:center}.navigation{flex-direction:column;align-items:center}.cat-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}.main-content{padding:1rem}.footer-links{flex-direction:column;gap:.5rem}.footer-separator{display:none}}