/* ===== Responsive Styles ===== */
@media (max-width: 768px) {
    /* Header Layout */
    header {
        position: relative;
        align-items: center;
    }

    .logo {
        flex: 1;
        font-size: 1.5rem;
        text-align: left;
    }

    .menu-toggle,
    .theme-toggle {
        display: inline-block;
        margin-left: 0.5rem;
    }

    .menu-toggle {
        margin-right: 10px;
    }

    .nav ul {
        display: none;
        flex-direction: column;
        background-color: var(--button-bg);
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        padding: 1rem 0;
    }

    .nav ul.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    .calculator-container-grid {
        display: flex;
        flex-direction: column;
        align-items: stretch;
    }

    /* Amortization Table */
    .amortization-header-cell,
    .amortization-data-cell {
        padding: 8px 12px !important;
        font-size: 12px !important;
    }

    #amortization-table {
        font-size: 12px !important;
    }
}