body {
    background:#111;
    color:#eee;
    font-family:Arial, sans-serif;
    margin:0;
    padding:20px;
}

.container {
    max-width:900px;
    margin:auto;
}

h1 { color:#f2a900; margin-bottom:10px; }
.subtitle { color:#ccc; margin-bottom:30px; }

.portfolio-input {
    display:flex;
    gap:10px;
    flex-wrap:wrap;
    margin-bottom:20px;
}

input, select, button {
    padding:10px;
    border:1px solid #333;
    border-radius:5px;
    background:#222;
    color:#eee;
}

button {
    cursor:pointer;
    background:#f2a900;
    color:#000;
    font-weight:bold;
}

button:hover {
    opacity:0.9;
}

table {
    width:100%;
    border-collapse:collapse;
    margin-top:10px;
}

th, td {
    padding:10px;
    border-bottom:1px solid #333;
    text-align:center;
}

.total-box {
    margin-top:20px;
    padding:20px;
    background:#1a1a1a;
    border:1px solid #333;
    border-radius:8px;
    text-align:center;
}

.total-box h3 {
    margin:0;
    color:#f2a900;
}