.metais-container {
    max-width: 800px;
    margin: 0 auto;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 20px 0;
}
.metais-header {
    text-align: center;
    color: #333;
    font-size: 2rem;
    margin-bottom: 30px;
    text-transform: uppercase;
    opacity: 0.7;
}
.metal-box {
    background-color: #eee;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 10px;
    text-align: center;
    font-size: 1.1rem;
    color: #333;
    width: 100%;
    box-sizing: border-box;
    display: block;
}
.metal-label {
    display: block;
    text-align: center;
    margin-bottom: 5px;
    font-size: 0.9rem;
    color: #000;
}
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.calc-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
    align-items: end;
}
.input-white {
    background-color: #fff !important;
    border: 1px solid #aaa;
}
.total-area {
    margin-top: 40px;
    text-align: center;
}
.total-label {
    font-size: 1.2rem;
    margin-bottom: 10px;
    text-transform: uppercase;
    color: #000;
}
.total-box {
    font-weight: bold;
    font-size: 1.3rem;
    background-color: #e0e0e0;
    max-width: 300px;
    margin: 0 auto;
}
@media (max-width: 600px) {
    .dashboard-grid, .calc-row {
        grid-template-columns: 1fr;
    }
    .calc-row {
        margin-bottom: 30px;
        border-bottom: 1px solid rgba(0,0,0,0.1);
        padding-bottom: 10px;
    }
}