.matrix-calc { width: 100%; }
.matrix-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.matrix-grids { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 20px; }
.matrix-grid-wrap { display: flex; flex-direction: column; align-items: center; }
.matrix-grid-label { font-size: 13px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.matrix-grid { display: grid; gap: 8px; }
.matrix-grid input {
    width: 56px; padding: 8px 6px; border: 1px solid var(--border); border-radius: 6px;
    font-size: 14px; text-align: center; font-family: var(--font-main); color: var(--text);
    background: var(--white); outline: none; box-sizing: border-box;
}
.matrix-grid input:focus { border-color: var(--teal); }
.matrix-results { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.matrix-result-header { background: #1d4ed8; color: #fff; font-size: 15px; font-weight: 700; padding: 10px 16px; }
.matrix-result-body { padding: 20px; display: flex; justify-content: center; }
.matrix-result-grid { display: grid; gap: 8px; }
.matrix-result-cell {
    min-width: 56px; padding: 10px 8px; text-align: center; font-weight: 700; color: var(--navy);
    background: var(--light); border-radius: 6px; font-size: 15px;
}
.matrix-scalar-result { font-size: 28px; font-weight: 800; color: var(--navy); }
@media (max-width: 768px) {
    .matrix-controls, .matrix-grids { grid-template-columns: 1fr; }
    .matrix-grid input { width: 48px; }
}