.layout-container{display:flex;flex-direction:row;flex:1;}
.image-panel{flex:1;background:#0a1738;display:flex;align-items:center;justify-content:center;}
.image-panel img{max-width:100%;height:auto;border-radius:8px;box-shadow:0 0 20px rgba(0,0,0,.4);}
.subtitle{text-align:center;font-size:1rem;color:#ccc;margin-top:-.5rem;margin-bottom:1.5rem;}
.calculator-panel{flex:1;background:#0a1738;padding:2rem;display:flex;flex-direction:column;}
h1{text-align:center;margin-bottom:1rem;color:#fff;}
.tab-buttons{display:flex;justify-content:center;margin-bottom:1.5rem;}
.tab-buttons button{background:#1a442f;color:#fff;border:none;padding:.75rem 1.5rem;margin:0 .5rem;border-radius:6px;cursor:pointer;transition:background-color .3s;}
.tab-buttons button:hover{background:#267c51;}
.page-content .tab{background:#fff;color:#0a1738;border-radius:12px;padding:2rem;box-shadow:0 0 12px rgba(0,0,0,.2);}
form label{display:block;margin-top:1rem;font-weight:bold;color:#0a1738;}
form input,form select{width:100%;padding:.5rem;margin-top:.25rem;border:1px solid #ccc;border-radius:6px;font-size:1rem;}
button[type="submit"]{background:#1a442f;color:#fff;border:none;padding:.75rem 1.5rem;margin-top:1.5rem;border-radius:6px;cursor:pointer;transition:background-color .3s;}
button[type="submit"]:hover{background:#267c51;}
h3{margin-top:1.5rem;font-size:1.25rem;color:#1a442f;}
@media(max-width:900px){.layout-container{flex-direction:column;}.image-panel,.calculator-panel{width:100%;}.image-panel{padding:1rem;}}