.calculator-container {
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    padding: 1.15rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--surface);
    box-shadow: var(--shadow-sm);
}

.calculator-header {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    margin-bottom: 1rem;
}

.calculator-header h1 {
    margin: 0;
    color: var(--text-main);
    font-size: 1.2rem;
    font-weight: 800;
}

.calculator-note {
    margin: 0;
    color: var(--text-sub);
    font-size: 0.85rem;
    line-height: 1.5;
}

.calculator-tabs {
    display: flex;
    gap: 0.25rem;
    padding: 0.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-muted);
    overflow-x: auto;
}

.tab-button {
    min-height: 34px;
    flex: 1 0 auto;
    padding: 0.4rem 0.65rem;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-sub);
    font-size: 0.88rem;
    font-weight: 800;
    cursor: pointer;
}

.tab-button.active {
    background: var(--surface);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.tab-panel {
    margin-top: 1rem;
    background-color: var(--surface);
}

.tab-panel[hidden] {
    display: none;
}

.amount-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.amount-toggle {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.2rem;
    padding: 0.2rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--surface-muted);
}

.mode-button {
    min-height: 32px;
    padding: 0.36rem 0.75rem;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-sub);
    font-weight: 800;
    cursor: pointer;
}

.mode-button.active {
    background-color: var(--surface);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.amount-output {
    min-width: 138px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.2rem;
    color: var(--text-main);
    font-size: 1.08rem;
    font-weight: 800;
    line-height: 1.2;
}

.amount-output span {
    white-space: nowrap;
}

.amount-subtext {
    color: var(--text-sub);
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
}

.amount-input {
    min-height: 48px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
}

.amount-input input {
    width: 100%;
    min-width: 0;
    padding: 0.35rem 0;
    border: none;
    background: transparent;
    font-size: 1rem;
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.amount-input input:focus {
    outline: none;
}

.amount-input span {
    color: var(--text-sub);
    font-weight: 800;
    white-space: nowrap;
}

.info-card {
    margin-top: 1rem;
    padding: 0.85rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--surface-muted);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
}

.tab-panel[data-panel="hourly"] .info-card {
    grid-template-columns: repeat(2, 1fr);
}

.tab-panel[data-panel="hourly"] .info-card.compact-card {
    grid-template-columns: 1fr;
}

.compact-card {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.5rem;
}

.compact-card .helper-text {
    margin: 0;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main);
    font-weight: 800;
}

.checkbox-row input {
    accent-color: var(--primary);
}

.info-item label {
    display: block;
    margin-bottom: 0.3rem;
    color: var(--text-sub);
    font-size: 0.82rem;
    font-weight: 700;
}

.info-item input,
.info-item select {
    width: 100%;
    min-height: 32px;
    border: none;
    border-bottom: 1px solid var(--border);
    background: transparent;
    color: var(--text-main);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.info-item input {
    text-align: right;
}

.info-item select {
    text-align: left;
}

.info-item input:focus,
.info-item select:focus {
    outline: none;
    border-color: var(--primary);
}

.info-item input[type="number"]::-webkit-outer-spin-button,
.info-item input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.info-item input[type="number"] {
    appearance: textfield;
}

.action-row {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
}

.btn-reset,
.btn-calculate {
    width: 100%;
    min-height: 38px;
    border-radius: var(--radius);
    padding: 0.5rem 0.8rem;
    font-size: 0.94rem;
    font-weight: 800;
    cursor: pointer;
}

.btn-reset {
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-main);
}

.btn-reset:hover {
    background: var(--surface-muted);
    border-color: var(--border-strong);
}

.btn-calculate {
    border: 1px solid var(--primary);
    background-color: var(--primary);
    color: #ffffff;
    transition: background-color 0.16s ease, border-color 0.16s ease;
}

.btn-calculate:hover {
    border-color: var(--primary-hover);
    background-color: var(--primary-hover);
}

.detail-card {
    margin-top: 1rem;
    padding: 0.9rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--surface);
}

.detail-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.34rem 0;
    color: var(--text-main);
    font-size: 0.9rem;
}

.detail-row span:first-child {
    color: var(--text-sub);
}

.total-row {
    margin-top: 0.45rem;
    padding-top: 0.65rem;
    border-top: 1px solid var(--border);
    font-weight: 800;
}

.detail-note {
    margin-top: 0.7rem;
    color: var(--text-sub);
    font-size: 0.82rem;
}

.helper-text {
    margin-top: 0.85rem;
    color: var(--text-sub);
    font-size: 0.82rem;
    line-height: 1.55;
}

.net-pay {
    color: var(--primary);
}

@media (max-width: 768px) {
    .calculator-container {
        padding: 1rem;
    }

    .amount-row {
        align-items: flex-start;
        flex-direction: column;
    }

    .amount-output {
        align-items: flex-start;
    }

    .info-card,
    .tab-panel[data-panel="hourly"] .info-card {
        grid-template-columns: 1fr;
    }

    .compact-card {
        align-items: flex-start;
        flex-direction: column;
    }

    .action-row {
        grid-template-columns: 1fr;
    }
}