.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.coin-card{background-color:#161b22;padding:1.5rem;border-radius:12px;box-shadow:0 0 10px #0000004d;transition:transform .2s ease}.coin-card:hover{transform:translateY(-5px)}.coin-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem}.coin-image{width:40px;height:40px}.symbol{font-size:.9rem;color:#aaa}.positive{color:#4caf50}.negative{color:#f44336}.top-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;gap:1rem;flex-wrap:wrap}.top-controls .filter{flex:1}.top-controls .controls{flex-shrink:0}.controls{margin-bottom:2rem;display:flex;align-items:center;justify-content:end;gap:.75rem}.controls label{font-weight:700}.controls select{padding:.5rem 1rem;border-radius:8px;background:#1c1f26;color:#fff;border:none}.filter{margin-bottom:2rem}.filter input{width:100%;padding:.75rem;border-radius:8px;border:none;background:#1c1f26;color:#fff;font-size:1rem}.coin-details-container{max-width:700px;margin:40px auto;text-align:center;padding:20px;font-family:Arial,sans-serif;color:#333;background-color:#f9f9f9;border-radius:8px;box-shadow:0 4px 8px #0000001a}.coin-details-container a{display:inline-block;margin-bottom:20px;text-decoration:none;color:#007bff;font-weight:700;transition:color .3s}.coin-details-container a:hover{color:#0056b3}.coin-details-title{font-size:36px;margin-bottom:10px}.coin-details-image{width:100px;margin-bottom:20px}.coin-details-description{font-size:16px;margin-bottom:20px;color:#555}.coin-details-info h3,.coin-details-info h4{margin:10px 0;color:#222}.coin-details-info h3{font-size:22px}.coin-details-info h4{font-size:16px}.coin-details-links{margin-top:20px}.coin-details-links a{color:#007bff;text-decoration:none}.coin-details-links a:hover{text-decoration:underline}