.tile-calculator{max-width:450px;margin:30px auto;padding:25px;background:#fff;border-radius:12px;box-shadow:0 5px 20px rgb(0 0 0 / .1);font-family:Arial,sans-serif}.tile-calculator h3{text-align:center;margin-bottom:25px;font-size:24px;color:#333}.tile-calculator label{display:block;margin-bottom:8px;margin-top:15px;font-weight:600;color:#444}.tile-calculator input{width:100%;padding:12px;border:1px solid #ddd;border-radius:6px;font-size:15px;box-sizing:border-box}.tile-calculator input:focus{outline:none;border-color:#333}.tile-calculator button{width:100%;margin-top:25px;background:#222;color:#fff;border:none;border-radius:6px;font-size:16px;cursor:pointer;transition:0.3s ease}.tile-calculator button:hover{background:#444}#results{margin-top:20px;padding:15px;background:#f5f5f5;border-radius:6px;text-align:center;font-weight:700;color:#222}