/* ==========================================================================
   calculator.css — Loan Calculator UI
   ==========================================================================
   
   Styles for the public and logged-in loan repayment calculator:
   - public/calculator.html       — Public calculator (no login required)
   - applicant/calculator.html    — Logged-in calculator with pre-filled salary

   Provides real-time loan repayment estimates with adjustable
   salary, amount, term, and loan type inputs.

   DimeWell Loan Processing Platform
   TWOFOUR DIMEWELL LIMITED
   ========================================================================== */


/* --------------------------------------------------------------------------
   1. Calculator Layout
   -------------------------------------------------------------------------- */

.calculator-page {
    min-height: calc(100vh - var(--navbar-height, 64px));
    background-color: var(--color-bg-secondary, #f5f6fa);
}

.calculator-container {
    max-width: 960px;
    margin: 0 auto;
    padding: var(--spacing-8, 32px) var(--spacing-4, 16px);
}

.calculator-header {
    text-align: center;
    margin-bottom: var(--spacing-8, 32px);
}

.calculator-header h1 {
    font-size: var(--font-size-3xl, 1.875rem);
    font-weight: 800;
    color: var(--color-text-primary, #1a1a2e);
    margin: 0 0 var(--spacing-2, 8px);
}

.calculator-header p {
    font-size: var(--font-size-base, 1rem);
    color: var(--color-text-secondary, #666);
    margin: 0;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* Two-column layout */
.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6, 24px);
    align-items: start;
}

@media (max-width: 768px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
}


/* --------------------------------------------------------------------------
   2. Input Panel
   -------------------------------------------------------------------------- */

.calculator-input-panel {
    background-color: var(--color-bg-primary, #ffffff);
    border: 1px solid var(--color-border, #e0e0e0);
    border-radius: var(--radius-xl, 16px);
    padding: var(--spacing-6, 24px);
    box-shadow: var(--shadow-sm, 0 2px 8px rgba(0, 0, 0, 0.04));
}

.calculator-input-panel__title {
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 700;
    color: var(--color-text-primary, #1a1a2e);
    margin: 0 0 var(--spacing-5, 20px);
    padding-bottom: var(--spacing-3, 12px);
    border-bottom: 2px solid var(--color-primary, #1a5276);
}

/* Input group */
.calc-input-group {
    margin-bottom: var(--spacing-5, 20px);
}

.calc-input-group:last-child {
    margin-bottom: 0;
}

.calc-input-group label {
    display: block;
    font-size: var(--font-size-xs, 0.75rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary, #666);
    margin-bottom: var(--spacing-2, 8px);
}

.calc-input-group__input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.calc-input-group__prefix {
    position: absolute;
    left: var(--spacing-4, 16px);
    font-size: var(--font-size-base, 1rem);
    font-weight: 700;
    color: var(--color-text-secondary, #666);
    pointer-events: none;
    z-index: 1;
}

.calc-input-group input[type="number"] {
    width: 100%;
    height: 52px;
    padding: 0 var(--spacing-4, 16px);
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 600;
    border: 2px solid var(--color-border, #e0e0e0);
    border-radius: var(--radius-md, 8px);
    background-color: var(--color-bg-primary, #ffffff);
    color: var(--color-text-primary, #1a1a2e);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    -moz-appearance: textfield;
}

.calc-input-group input[type="number"]:focus {
    outline: none;
    border-color: var(--color-primary, #1a5276);
    box-shadow: 0 0 0 4px rgba(26, 82, 118, 0.1);
}

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

.calc-input-group input[type="number"]:disabled {
    background-color: var(--color-bg-tertiary, #f8f9fb);
    color: var(--color-text-muted, #999);
    cursor: not-allowed;
}

.calc-input-group--with-prefix input[type="number"] {
    padding-left: var(--spacing-10, 40px);
}

.calc-input-group__suffix {
    position: absolute;
    right: var(--spacing-4, 16px);
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--color-text-muted, #999);
    pointer-events: none;
}

.calc-input-group__hint {
    font-size: var(--font-size-xs, 0.6875rem);
    color: var(--color-text-muted, #999);
    margin-top: var(--spacing-1, 4px);
}

/* Salary info banner (logged-in calculator) */
.calc-salary-info {
    background-color: #e8f0fe;
    border-radius: var(--radius-md, 8px);
    padding: var(--spacing-3, 12px) var(--spacing-4, 16px);
    margin-bottom: var(--spacing-5, 20px);
    display: flex;
    align-items: center;
    gap: var(--spacing-3, 12px);
    font-size: var(--font-size-sm, 0.875rem);
}

.calc-salary-info__icon {
    font-size: 1.25rem;
    color: var(--color-primary, #1a5276);
    flex-shrink: 0;
}

.calc-salary-info__text {
    color: #1a56a0;
    font-weight: 500;
}

.calc-salary-info__text strong {
    font-weight: 700;
}


/* --------------------------------------------------------------------------
   3. Term Selector (Radio Group)
   -------------------------------------------------------------------------- */

.term-selector {
    display: flex;
    gap: var(--spacing-2, 8px);
    flex-wrap: wrap;
}

.term-selector__option {
    flex: 1;
    min-width: 60px;
}

.term-selector__option input[type="radio"] {
    display: none;
}

.term-selector__label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 54px;
    padding: var(--spacing-2, 8px);
    border: 2px solid var(--color-border, #e0e0e0);
    border-radius: var(--radius-md, 8px);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 700;
    color: var(--color-text-primary, #1a1a2e);
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: var(--color-bg-primary, #ffffff);
    text-align: center;
}

.term-selector__label:hover {
    border-color: var(--color-primary-light, #85aac7);
    background-color: var(--color-primary-light, #e8f0fe);
}

.term-selector__option input:checked + .term-selector__label {
    border-color: var(--color-primary, #1a5276);
    background-color: var(--color-primary-light, #e8f0fe);
    color: var(--color-primary, #1a5276);
    box-shadow: 0 0 0 3px rgba(26, 82, 118, 0.1);
}

.term-selector__months {
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 800;
    line-height: 1.2;
}

.term-selector__label-text {
    font-size: var(--font-size-xs, 0.6875rem);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.2px;
    color: var(--color-text-secondary, #666);
}


/* --------------------------------------------------------------------------
   4. Product Selector Tabs
   -------------------------------------------------------------------------- */

.product-tabs {
    display: flex;
    gap: var(--spacing-1, 4px);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--spacing-2, 8px);
    margin-bottom: var(--spacing-5, 20px);
    border-bottom: 2px solid var(--color-border, #e0e0e0);
}

.product-tabs::-webkit-scrollbar {
    height: 3px;
}

.product-tab {
    padding: var(--spacing-2, 8px) var(--spacing-4, 16px);
    font-size: var(--font-size-xs, 0.75rem);
    font-weight: 600;
    color: var(--color-text-secondary, #666);
    background: none;
    border: none;
    white-space: nowrap;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: calc(-1 * var(--spacing-2, 8px) - 2px);
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.2px;
}

.product-tab:hover {
    color: var(--color-text-primary, #1a1a2e);
}

.product-tab--active {
    color: var(--color-primary, #1a5276);
    border-bottom-color: var(--color-primary, #1a5276);
    font-weight: 700;
}


/* --------------------------------------------------------------------------
   5. Results Panel
   -------------------------------------------------------------------------- */

.calculator-results-panel {
    background-color: var(--color-bg-primary, #ffffff);
    border: 1px solid var(--color-border, #e0e0e0);
    border-radius: var(--radius-xl, 16px);
    padding: var(--spacing-6, 24px);
    box-shadow: var(--shadow-sm, 0 2px 8px rgba(0, 0, 0, 0.04));
    position: sticky;
    top: calc(var(--navbar-height, 64px) + var(--spacing-4, 16px));
}

.calculator-results-panel__title {
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 700;
    color: var(--color-text-primary, #1a1a2e);
    margin: 0 0 var(--spacing-5, 20px);
    padding-bottom: var(--spacing-3, 12px);
    border-bottom: 2px solid var(--color-primary, #1a5276);
}

/* Main monthly instalment display */
.monthly-instalment {
    text-align: center;
    padding: var(--spacing-6, 24px);
    margin-bottom: var(--spacing-5, 20px);
    background: linear-gradient(135deg, var(--color-primary, #1a5276), #154360);
    border-radius: var(--radius-lg, 12px);
    color: #ffffff;
}

.monthly-instalment__label {
    font-size: var(--font-size-xs, 0.75rem);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.85;
    margin: 0 0 var(--spacing-2, 8px);
}

.monthly-instalment__amount {
    font-size: var(--font-size-4xl, 2.5rem);
    font-weight: 800;
    margin: 0;
    line-height: 1.1;
    letter-spacing: -0.5px;
}

.monthly-instalment__period {
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 500;
    opacity: 0.75;
    margin-top: var(--spacing-1, 4px);
}

/* Breakdown table */
.calc-breakdown {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-5, 20px);
}

.calc-breakdown tr {
    border-bottom: 1px solid var(--color-border-light, #f0f0f0);
}

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

.calc-breakdown td {
    padding: var(--spacing-3, 12px) 0;
    font-size: var(--font-size-sm, 0.875rem);
}

.calc-breakdown td:first-child {
    color: var(--color-text-secondary, #666);
    font-weight: 500;
}

.calc-breakdown td:last-child {
    text-align: right;
    font-weight: 700;
    color: var(--color-text-primary, #1a1a2e);
}

.calc-breakdown .breakdown-total td {
    font-size: var(--font-size-base, 1rem);
    color: var(--color-danger, #e74c3c);
    border-top: 2px solid var(--color-border, #e0e0e0);
    padding-top: var(--spacing-4, 16px);
}

/* DTI Ratio gauge */
.dti-gauge {
    padding: var(--spacing-4, 16px);
    background-color: var(--color-bg-tertiary, #f8f9fb);
    border-radius: var(--radius-md, 8px);
    margin-bottom: var(--spacing-4, 16px);
}

.dti-gauge__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-2, 8px);
}

.dti-gauge__label {
    font-size: var(--font-size-xs, 0.75rem);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--color-text-secondary, #666);
}

.dti-gauge__value {
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 700;
}

.dti-gauge__value--safe {
    color: var(--color-success, #2ecc71);
}

.dti-gauge__value--warning {
    color: var(--color-warning, #f39c12);
}

.dti-gauge__value--danger {
    color: var(--color-danger, #e74c3c);
}

.dti-bar {
    width: 100%;
    height: 8px;
    background-color: var(--color-border, #e0e0e0);
    border-radius: var(--radius-full, 50px);
    overflow: hidden;
}

.dti-bar__fill {
    height: 100%;
    border-radius: var(--radius-full, 50px);
    transition: width 0.4s ease, background-color 0.4s ease;
}

.dti-bar__fill--safe {
    background-color: var(--color-success, #2ecc71);
}

.dti-bar__fill--warning {
    background-color: var(--color-warning, #f39c12);
}

.dti-bar__fill--danger {
    background-color: var(--color-danger, #e74c3c);
}

.dti-gauge__max {
    text-align: right;
    font-size: var(--font-size-xs, 0.6875rem);
    color: var(--color-text-muted, #999);
    margin-top: var(--spacing-1, 4px);
}


/* --------------------------------------------------------------------------
   6. Slider Input (Range)
   -------------------------------------------------------------------------- */

.calc-range-slider {
    width: 100%;
    margin-bottom: var(--spacing-2, 8px);
}

.calc-range-slider input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full, 50px);
    background: linear-gradient(
        to right,
        var(--color-primary, #1a5276) 0%,
        var(--color-primary, #1a5276) var(--slider-percent, 50%),
        var(--color-border, #e0e0e0) var(--slider-percent, 50%),
        var(--color-border, #e0e0e0) 100%
    );
    outline: none;
    cursor: pointer;
}

.calc-range-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: #ffffff;
    border: 3px solid var(--color-primary, #1a5276);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    transition: box-shadow 0.2s ease;
}

.calc-range-slider input[type="range"]::-webkit-slider-thumb:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.calc-range-slider input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: #ffffff;
    border: 3px solid var(--color-primary, #1a5276);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.calc-range-labels {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-xs, 0.6875rem);
    color: var(--color-text-muted, #999);
    margin-top: var(--spacing-1, 4px);
}


/* --------------------------------------------------------------------------
   7. Quick Amount Presets
   -------------------------------------------------------------------------- */

.calc-presets {
    display: flex;
    gap: var(--spacing-2, 8px);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3, 12px);
}

.calc-preset {
    padding: var(--spacing-2, 8px) var(--spacing-3, 12px);
    border: 1px solid var(--color-border, #e0e0e0);
    border-radius: var(--radius-full, 50px);
    font-size: var(--font-size-xs, 0.75rem);
    font-weight: 600;
    background-color: var(--color-bg-primary, #ffffff);
    color: var(--color-text-primary, #1a1a2e);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.calc-preset:hover {
    border-color: var(--color-primary, #1a5276);
    background-color: var(--color-primary-light, #e8f0fe);
}

.calc-preset--active {
    background-color: var(--color-primary, #1a5276);
    border-color: var(--color-primary, #1a5276);
    color: #ffffff;
}


/* --------------------------------------------------------------------------
   8. Apply Now Button
   -------------------------------------------------------------------------- */

.calc-apply-btn {
    display: block;
    width: 100%;
    padding: var(--spacing-4, 16px);
    font-size: var(--font-size-base, 1rem);
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    background-color: var(--color-success, #2ecc71);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md, 8px);
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: var(--spacing-5, 20px);
}

.calc-apply-btn:hover {
    background-color: #27ae60;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

.calc-apply-btn:active {
    transform: translateY(0);
}

.calc-apply-btn:disabled {
    background-color: var(--color-text-muted, #bbb);
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}


/* --------------------------------------------------------------------------
   9. Loading / Calculating State
   -------------------------------------------------------------------------- */

.calculator-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8, 32px);
    text-align: center;
}

.calculator-loading__spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border, #e0e0e0);
    border-top-color: var(--color-primary, #1a5276);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: var(--spacing-3, 12px);
}

.calculator-loading__text {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--color-text-secondary, #666);
    margin: 0;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Results updating pulse */
.calculator-results--updating {
    opacity: 0.6;
    pointer-events: none;
    transition: opacity 0.15s ease;
}


/* --------------------------------------------------------------------------
   10. Error / Out of Range Message
   -------------------------------------------------------------------------- */

.calc-error {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3, 12px);
    padding: var(--spacing-4, 16px);
    background-color: #fdecea;
    border: 1px solid #f5c6cb;
    border-radius: var(--radius-md, 8px);
    margin-bottom: var(--spacing-4, 16px);
}

.calc-error__icon {
    font-size: 1.25rem;
    color: var(--color-danger, #e74c3c);
    flex-shrink: 0;
    margin-top: 1px;
}

.calc-error__text {
    font-size: var(--font-size-sm, 0.875rem);
    color: #73212d;
    line-height: 1.5;
}

.calc-error__text strong {
    display: block;
    margin-bottom: var(--spacing-1, 4px);
}


/* --------------------------------------------------------------------------
   11. Disclaimer
   -------------------------------------------------------------------------- */

.calculator-disclaimer {
    text-align: center;
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-text-muted, #999);
    margin-top: var(--spacing-6, 24px);
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.calculator-disclaimer strong {
    color: var(--color-text-secondary, #666);
}


/* --------------------------------------------------------------------------
   12. Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 768px) {
    .calculator-container {
        padding: var(--spacing-4, 16px);
    }

    .calculator-header h1 {
        font-size: var(--font-size-2xl, 1.5rem);
    }

    .calculator-results-panel {
        position: static;
    }

    .monthly-instalment__amount {
        font-size: var(--font-size-3xl, 1.875rem);
    }

    .term-selector {
        gap: var(--spacing-1, 4px);
    }

    .term-selector__label {
        height: 46px;
        font-size: var(--font-size-xs, 0.75rem);
    }

    .term-selector__months {
        font-size: var(--font-size-base, 1rem);
    }
}

@media (max-width: 576px) {
    .calculator-input-panel,
    .calculator-results-panel {
        padding: var(--spacing-4, 16px);
    }

    .monthly-instalment {
        padding: var(--spacing-4, 16px);
    }

    .calc-presets {
        gap: var(--spacing-1, 4px);
    }

    .calc-preset {
        padding: var(--spacing-1, 4px) var(--spacing-2, 8px);
        font-size: var(--font-size-xs, 0.6875rem);
    }

    .product-tab {
        padding: var(--spacing-2, 8px) var(--spacing-3, 12px);
        font-size: var(--font-size-xs, 0.6875rem);
    }
}