body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
    color: #333;
}
header {
    text-align: center;
    padding: 20px;
    background-color: #1a73e8;
    color: white;
}
.dashboard {
    max-width: 1400px;
    margin: 20px auto;
    padding: 20px;
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    display: grid;
    grid-template-rows: auto auto 1fr;
    gap: 15px;
}
a {
    text-decoration: none;
    color: #000080;
    font-size: 18px;
}
a:hover {
    color: #d4a017;
}
.top-params {
    display: flex;
    gap: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    background-color: #f9f9f9;
}
.sub-section {
    flex: 1;
    padding: 10px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background-color: white;
    position: relative;
}
.sub-section:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 10px;
    bottom: 10px;
    width: 1px;
    background-color: #e0e0e0;
}
.core-section {
    flex: 2; /* Wider for core */
}
.sub-section h3 {
    margin-top: 0;
    color: #1a73e8;
    font-size: 16px;
    text-align: center;
    border-bottom: 1px solid #ddd;
    padding-bottom: 5px;
}
.param-group {
    display: grid;
    grid-template-columns: 140px 1fr 70px;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
}
.param-group label {
    font-weight: bold;
    font-size: 12px;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.param-group input[type="range"] {
    margin: 0;
}
.param-group input[type="number"] {
    padding: 6px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 13px;
    margin: 0;
}
.param-group select {
    width: 100%;
    padding: 6px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
    grid-column: 1 / -1; /* Full width for selects */
}
.mosfet-params {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 6px;
    margin: 10px 0;
    border: 1px solid #ddd;
    flex: 1;
}
.mosfet-params h4 {
    margin: 0 0 8px;
    color: #1a73e8;
    font-size: 12px;
    text-align: center;
}
.delta-summary {
    margin-top: 10px;
    padding: 5px;
    background: #e3f2fd;
    border-radius: 4px;
    font-size: 11px;
    text-align: center;
    color: #1976d2;
    font-weight: bold;
}
.button-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #f9f9f9;
    justify-content: center;
}
.button-toolbar button {
    background-color: #1a73e8;
    color: white;
    padding: 8px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    flex: 0 1 auto;
    min-width: 100px;
    max-width: 140px;
}
.button-toolbar button:hover {
    background-color: #1557b0;
}
.bottom-split {
    display: flex;
    gap: 20px;
}
.formulas-left {
    flex: 1; /* Equal width */
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #f9f9f9;
    min-height: 500px;
}
.charts-right {
    flex: 1;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #f9f9f9;
    min-height: 500px;
}
.formulas-left h3, .charts-right h3 {
    margin-top: 0;
    color: #1a73e8;
    font-size: 16px;
}
canvas {
    max-width: 100%;
    margin-top: 10px;
    height: 500px; /* Taller main chart */
}
.chart-coordinates {
    font-size: 13px;
    color: #333;
    margin-top: 5px;
    text-align: left;
}
#loss-formulas {
    margin-top: 0;
    padding: 12px;
    background: #f8f9fa;
    border-left: 4px solid #1a73e8;
    border-radius: 4px;
    font-size: 13px;
    line-height: 1.6;
    color: #444;
}
#loss-formulas strong {
    font-weight: bold;
    color: #000;
}
#loss-formulas p {
    margin: 5px 0;
}
#loss-formulas .value {
    font-weight: bold;
    color: #000;
    margin-left: 5px;
}

/* Responsive: Stack on smaller screens */
@media (max-width: 1200px) {
    .top-params {
        flex-direction: column;
        gap: 15px;
    }
    .sub-section:not(:last-child)::after {
        display: none;
    }
    .param-group {
        grid-template-columns: 1fr;
        gap: 4px;
    }
    .param-group label {
        grid-column: 1;
    }
    .param-group input[type="range"] {
        grid-column: 1;
        min-width: auto;
    }
    .param-group input[type="number"] {
        grid-column: 1;
        width: 100px;
    }
    .button-toolbar {
        justify-content: flex-start;
    }
    .bottom-split {
        flex-direction: column;
    }
    canvas {
        height: 350px; /* Slightly taller but responsive */
    }
}