/* =========================================================
   calculator.css — main calculator page styles
   ========================================================= */

/* ---- page wrapper ---- */
.calc-page {
    padding: var(--space-2xl) 0 var(--space-3xl);
}

.calc-page__header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.calc-page__title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.calc-page__subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* =========================================================
   SALARY INPUT CARD
   ========================================================= */

.salary-section {
    margin-bottom: var(--space-xl);
}

.salary-section__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--space-xl);
}

.salary-input-group {
    flex: 1;
    min-width: 220px;
}

.salary-input-group__label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.salary-input-group__field {
    display: flex;
    align-items: stretch;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.salary-input-group__field:focus-within {
    border-color: var(--green-dark);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.12);
}

.salary-input-group__prefix {
    padding: 0.85rem 1rem;
    background: #F3F4F6;
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.95rem;
    border-right: 2px solid var(--border);
    display: flex;
    align-items: center;
}

.salary-input-group__input {
    flex: 1;
    padding: 0.85rem 1rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    border: none;
    outline: none;
    background: transparent;
    font-variant-numeric: tabular-nums;
}

/* hide the browser number spinner — it looks messy here */
.salary-input-group__input::-webkit-outer-spin-button,
.salary-input-group__input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.salary-input-group__input[type=number] {
    -moz-appearance: textfield;
}

.salary-input-group__error {
    min-height: 1.2em;
    margin-top: var(--space-xs);
    font-size: 0.82rem;
    color: var(--red);
    font-weight: 500;
}

.salary-section__hint {
    margin-top: var(--space-md);
    font-size: 0.88rem;
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
}

/* ---- monthly / annual toggle ---- */
.period-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.period-toggle__label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
}

.period-toggle__label--active {
    color: var(--text-primary);
    font-weight: 700;
}

/* toggle switch pill */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-switch__slider {
    position: absolute;
    inset: 0;
    background: #D1D5DB;
    border-radius: 99px;
    transition: var(--transition);
}

.toggle-switch__slider::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    top: 3px;
    left: 3px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.toggle-switch input:checked + .toggle-switch__slider {
    background: var(--green-dark);
}

.toggle-switch input:checked + .toggle-switch__slider::before {
    transform: translateX(22px);
}

.toggle-switch input:focus-visible + .toggle-switch__slider {
    outline: 3px solid var(--green-dark);
    outline-offset: 2px;
}

/* =========================================================
   SUMMARY CARDS GRID
   ========================================================= */

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.results-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    padding: var(--space-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    transition: var(--transition);
}

.results-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.results-card__icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.results-card__body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.results-card__label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.results-card__amount {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.results-card__amount--large {
    font-size: 1.4rem;
}

.results-card__sub {
    font-size: 0.76rem;
    color: var(--text-muted);
}

/* per-card accent colors */
.results-card--gross .results-card__icon  { background: #F0FDF4; color: var(--green-dark); }
.results-card--paye .results-card__icon   { background: #FFF7ED; color: var(--color-paye); }
.results-card--shif .results-card__icon   { background: #EFF6FF; color: var(--color-shif); }
.results-card--nssf .results-card__icon   { background: #FFFBEB; color: var(--color-nssf); }
.results-card--levy .results-card__icon   { background: #F5F3FF; color: var(--color-levy); }

/* net pay card — the star of the show */
.results-card--highlight {
    border-color: var(--green-bright);
    background: linear-gradient(135deg, #F0FDF4, #DCFCE7);
    grid-column: span 2;
}

.results-card--highlight .results-card__icon {
    background: var(--green-bright);
    color: #fff;
    width: 52px;
    height: 52px;
    font-size: 1.3rem;
}

.results-card--highlight .results-card__label {
    color: #065F46;
}

.results-card--net .results-card__amount {
    color: var(--green-dark);
}

/* =========================================================
   BREAKDOWN TABLE
   ========================================================= */

.breakdown-section {
    margin-bottom: var(--space-xl);
}

.breakdown-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.breakdown-section__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.breakdown-section__title i {
    color: var(--green-dark);
}

.breakdown-section__period {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    background: #F3F4F6;
    padding: 0.25rem 0.7rem;
    border-radius: 99px;
}

.breakdown-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.breakdown-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

.breakdown-table__th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.breakdown-table__th--amount {
    text-align: right;
}

.breakdown-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.breakdown-table tr:last-child td {
    border-bottom: none;
}

.breakdown-table tbody tr:nth-child(even) {
    background: #F9FAFB;
}

.breakdown-table tbody tr:hover {
    background: #F0FDF4;
}

.bt-label {
    font-weight: 500;
    color: var(--text-primary);
}

.bt-label--sub {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: block;
    margin-top: 1px;
}

.bt-formula {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
}

.bt-amount {
    text-align: right;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.bt-amount--deduction { color: var(--red); }
.bt-amount--gross     { color: var(--green-dark); }

.breakdown-table tfoot tr:first-child td {
    border-top: 2px solid var(--border);
    font-weight: 700;
    color: var(--text-primary);
}

.breakdown-table tfoot .bt-total-row td {
    font-weight: 700;
    font-size: 0.95rem;
}

.breakdown-table tfoot .bt-net-row td {
    font-weight: 800;
    font-size: 1rem;
    color: var(--green-dark);
    background: #F0FDF4;
    border-top: 2px solid var(--green-bright);
}

/* =========================================================
   BRACKET DETAIL SECTION
   ========================================================= */

.bracket-detail {
    margin-bottom: var(--space-xl);
}

.bracket-detail__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.bracket-detail__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.bracket-detail__title i {
    color: var(--teal);
}

.bracket-detail__rates {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.rate-badge {
    text-align: center;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    min-width: 110px;
}

.rate-badge--effective {
    background: #FFF7ED;
    border: 1px solid #FED7AA;
}

.rate-badge--marginal {
    background: #F0FDFA;
    border: 1px solid #99F6E4;
}

.rate-badge__label {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.rate-badge--effective .rate-badge__value { color: var(--color-paye); }
.rate-badge--marginal  .rate-badge__value { color: var(--teal); }

.rate-badge__value {
    display: block;
    font-size: 1.4rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.bracket-detail__explainer {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.bracket-table-wrapper {
    overflow-x: auto;
}

.bracket-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.bracket-table th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.bracket-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border);
    font-variant-numeric: tabular-nums;
}

/* the bracket row the user's income actually hits */
.bracket-table tr.bracket-row--active {
    background: #F0FDFA;
}

.bracket-table tr.bracket-row--active td {
    font-weight: 600;
    color: var(--teal);
}

.bracket-table tr.bracket-row--active td:first-child::before {
    content: '\2192  ';
    font-weight: 800;
}

.bracket-table tr.bracket-row--zero td {
    color: var(--text-muted);
    font-style: italic;
}

.bracket-detail__summary {
    margin-top: var(--space-lg);
    padding: var(--space-md);
    background: #F9FAFB;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.bracket-detail__summary strong {
    color: var(--text-primary);
}

/* =========================================================
   PDF EXPORT BAR
   ========================================================= */

.pdf-export-bar {
    display: none; /* shown by JS when results are visible */
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: #F0FDF4;
    border: 1px solid #A7F3D0;
    border-radius: var(--radius-sm);
}

.pdf-export-bar.pdf-export-bar--visible {
    display: flex;
}

.pdf-export-bar__hint {
    font-size: 0.85rem;
    color: var(--text-secondary);
    flex: 1;
}

/* =========================================================
   RESULTS AREA VISIBILITY
   ========================================================= */

.results-area--empty .summary-cards,
.results-area--empty .breakdown-section,
.results-area--empty .bracket-detail,
.results-area--empty .charts-section,
.results-area--empty .bviz-card {
    display: none;
}

/* =========================================================
   CALCULATOR RESPONSIVE
   ========================================================= */

@media (min-width: 1024px) {
    .summary-cards {
        grid-template-columns: repeat(3, 1fr);
    }

    .results-card--highlight {
        grid-column: 1 / -1;
    }
}

@media (max-width: 767px) {
    .calc-page__title {
        font-size: 1.6rem;
    }

    .salary-section__inner {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-lg);
    }

    .period-toggle {
        justify-content: center;
    }

    .summary-cards {
        grid-template-columns: 1fr 1fr;
    }

    .results-card--highlight {
        grid-column: 1 / -1;
    }

    .bracket-detail__header {
        flex-direction: column;
    }

    .bracket-detail__rates {
        width: 100%;
    }

    .rate-badge {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .summary-cards {
        grid-template-columns: 1fr;
    }
}