/**
 * DCA Calculator — Stylesheet
 *
 * Mobile-first, card-based layout. No external font imports.
 * Color tokens defined as CSS custom properties for easy theming.
 *
 * @package DCA_Calculator
 */

/* =========================================================================
   Design tokens
   ========================================================================= */
.dca-calculator-wrap {
    --dca-accent:        #2563eb;
    --dca-accent-dark:   #1d4ed8;
    --dca-accent-light:  #eff6ff;
    --dca-bg:            #f8fafc;
    --dca-card-bg:       #ffffff;
    --dca-border:        #e2e8f0;
    --dca-border-focus:  #93c5fd;
    --dca-text:          #1e293b;
    --dca-text-muted:    #64748b;
    --dca-text-light:    #94a3b8;
    --dca-success:       #16a34a;
    --dca-success-bg:    #f0fdf4;
    --dca-danger:        #dc2626;
    --dca-danger-bg:     #fef2f2;
    --dca-warning-bg:    #fefce8;
    --dca-warning-text:  #854d0e;
    --dca-shadow-sm:     0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --dca-shadow:        0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -1px rgba(0,0,0,.04);
    --dca-radius:        10px;
    --dca-radius-sm:     6px;
    --dca-font:          -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
                         Helvetica, Arial, sans-serif;
}

/* =========================================================================
   Wrapper & layout
   ========================================================================= */
.dca-calculator-wrap {
    box-sizing: border-box;
    font-family: var(--dca-font);
    font-size: 15px;
    color: var(--dca-text);
    line-height: 1.5;
    max-width: 1000px;
    margin: 0 auto;
    padding: 8px 0 32px;
}

.dca-calculator-wrap *,
.dca-calculator-wrap *::before,
.dca-calculator-wrap *::after {
    box-sizing: inherit;
}

/* =========================================================================
   Card base
   ========================================================================= */
.dca-card {
    background: var(--dca-card-bg);
    border: 1px solid var(--dca-border);
    border-radius: var(--dca-radius);
    box-shadow: var(--dca-shadow-sm);
    padding: 24px;
    margin-bottom: 20px;
}

.dca-card-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--dca-text);
    margin: 0 0 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--dca-border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.dca-card-title .dca-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--dca-accent-light);
    border-radius: 6px;
    color: var(--dca-accent);
    flex-shrink: 0;
}

/* =========================================================================
   Form layout — inputs card
   ========================================================================= */
.dca-form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.dca-form-row {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.dca-form-row label {
    font-size: 13px;
    font-weight: 500;
    color: var(--dca-text);
    letter-spacing: .01em;
}

.dca-form-row .dca-hint {
    font-size: 12px;
    color: var(--dca-text-muted);
    margin-top: 3px;
}

.dca-required {
    color: var(--dca-danger);
    margin-left: 2px;
}

/* Inputs */
.dca-calculator-wrap input[type="text"],
.dca-calculator-wrap input[type="number"],
.dca-calculator-wrap input[type="date"],
.dca-calculator-wrap select {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid var(--dca-border);
    border-radius: var(--dca-radius-sm);
    font-family: var(--dca-font);
    font-size: 14px;
    color: var(--dca-text);
    background: #fff;
    appearance: none;
    -webkit-appearance: none;
    transition: border-color .15s ease, box-shadow .15s ease;
    outline: none;
}

.dca-calculator-wrap input[type="text"]:focus,
.dca-calculator-wrap input[type="number"]:focus,
.dca-calculator-wrap input[type="date"]:focus,
.dca-calculator-wrap select:focus {
    border-color: var(--dca-accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.dca-calculator-wrap input.dca-input-error {
    border-color: var(--dca-danger);
    box-shadow: 0 0 0 3px rgba(220,38,38,.1);
}

/* Custom select arrow */
.dca-select-wrap {
    position: relative;
}

.dca-select-wrap::after {
    content: '';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--dca-text-muted);
    pointer-events: none;
}

/* Prefix/suffix wrappers */
.dca-input-group {
    display: flex;
    align-items: stretch;
}

.dca-input-prefix,
.dca-input-suffix {
    display: flex;
    align-items: center;
    padding: 0 10px;
    background: var(--dca-bg);
    border: 1.5px solid var(--dca-border);
    color: var(--dca-text-muted);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
}

.dca-input-prefix {
    border-right: none;
    border-radius: var(--dca-radius-sm) 0 0 var(--dca-radius-sm);
}

.dca-input-suffix {
    border-left: none;
    border-radius: 0 var(--dca-radius-sm) var(--dca-radius-sm) 0;
}

.dca-input-group input {
    flex: 1;
    min-width: 0;
    /* Explicit values guard against Kadence (or any theme) overriding the
       broader input[type="number"] rule and making typed text invisible. */
    color: #1e293b;
    background: #fff;
}

/* Bulletproof text color — overrides Kadence theme -webkit-text-fill-color
   which wins over the standard `color` property in some WebKit/Safari builds. */
.dca-calculator-wrap .dca-input-group input,
.dca-calculator-wrap input[type="number"],
.dca-calculator-wrap input[type="text"],
.dca-calculator-wrap input[type="date"] {
    color: #1e293b !important;
    background-color: #ffffff !important;
    -webkit-text-fill-color: #1e293b !important; /* Safari/WebKit override */
}

.dca-input-prefix + input {
    border-radius: 0 var(--dca-radius-sm) var(--dca-radius-sm) 0;
}

.dca-input-group input + .dca-input-suffix {
    border-radius: 0 var(--dca-radius-sm) var(--dca-radius-sm) 0;
}

/* Frequency radio group */
.dca-radio-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.dca-radio-group input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.dca-radio-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 16px;
    border: 1.5px solid var(--dca-border);
    border-radius: var(--dca-radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--dca-text-muted);
    cursor: pointer;
    transition: all .15s ease;
    user-select: none;
}

.dca-radio-group input[type="radio"]:checked + .dca-radio-label {
    background: var(--dca-accent);
    border-color: var(--dca-accent);
    color: #fff;
}

.dca-radio-group input[type="radio"]:focus + .dca-radio-label {
    box-shadow: 0 0 0 3px rgba(37,99,235,.2);
}

.dca-radio-label:hover {
    border-color: var(--dca-accent);
    color: var(--dca-accent);
}

.dca-radio-group input[type="radio"]:checked + .dca-radio-label:hover {
    color: #fff;
}

/* Optional fields section */
.dca-optional-section {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px dashed var(--dca-border);
}

.dca-optional-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--dca-text-muted);
    margin: 0 0 14px;
}

/* Inline error message */
.dca-field-error {
    font-size: 12px;
    color: var(--dca-danger);
    margin-top: 4px;
    display: none;
}

.dca-field-error.visible {
    display: block;
}

/* Submit button */
.dca-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 24px;
    background: var(--dca-accent);
    color: #fff;
    border: none;
    border-radius: var(--dca-radius-sm);
    font-family: var(--dca-font);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s ease, transform .1s ease, box-shadow .15s ease;
    margin-top: 8px;
    box-shadow: 0 2px 4px rgba(37,99,235,.25);
}

.dca-btn-primary:hover:not(:disabled) {
    background: var(--dca-accent-dark);
    box-shadow: 0 4px 8px rgba(37,99,235,.3);
}

.dca-btn-primary:active:not(:disabled) {
    transform: translateY(1px);
}

.dca-btn-primary:disabled {
    background: var(--dca-text-light);
    cursor: not-allowed;
    box-shadow: none;
}

/* Spinner */
.dca-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2.5px solid rgba(255,255,255,.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: dca-spin .7s linear infinite;
    flex-shrink: 0;
}

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

/* Global error / notice banner */
.dca-notice {
    padding: 12px 16px;
    border-radius: var(--dca-radius-sm);
    font-size: 14px;
    margin-bottom: 16px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.dca-notice-error {
    background: var(--dca-danger-bg);
    border: 1px solid #fecaca;
    color: var(--dca-danger);
}

.dca-notice-icon {
    font-size: 16px;
    flex-shrink: 0;
    line-height: 1.4;
}

/* =========================================================================
   Results section
   ========================================================================= */
.dca-results-wrap {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity .3s ease, transform .3s ease;
}

.dca-results-wrap.dca-results-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Hide via [hidden] attribute; the transition class reveals it */
.dca-results-wrap[hidden] {
    display: none !important;
}

/* Asset & date context bar */
.dca-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.dca-results-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--dca-text);
    margin: 0;
}

.dca-results-meta {
    font-size: 13px;
    color: var(--dca-text-muted);
}

/* Summary stat cards grid */
.dca-summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.dca-stat-card {
    background: var(--dca-bg);
    border: 1px solid var(--dca-border);
    border-radius: var(--dca-radius-sm);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dca-stat-card.dca-stat-highlight {
    background: var(--dca-accent-light);
    border-color: #bfdbfe;
}

.dca-stat-label {
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--dca-text-muted);
}

.dca-stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--dca-text);
    line-height: 1.2;
    word-break: break-all;
}

.dca-stat-card.dca-stat-highlight .dca-stat-value {
    color: var(--dca-accent);
}

.dca-stat-sub {
    font-size: 12px;
    color: var(--dca-text-muted);
}

/* Gain/loss color helpers */
.dca-gain {
    color: var(--dca-success) !important;
}

.dca-loss {
    color: var(--dca-danger) !important;
}

.dca-gain-badge,
.dca-loss-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.dca-gain-badge {
    background: var(--dca-success-bg);
    color: var(--dca-success);
}

.dca-loss-badge {
    background: var(--dca-danger-bg);
    color: var(--dca-danger);
}

/* =========================================================================
   Chart card
   ========================================================================= */
.dca-chart-card {
    margin-bottom: 20px;
}

.dca-chart-wrap {
    position: relative;
    height: 280px;
}

/* =========================================================================
   Year-by-year table card
   ========================================================================= */
.dca-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.dca-table-wrap table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    min-width: 560px;
}

.dca-table-wrap th,
.dca-table-wrap td {
    padding: 10px 12px;
    text-align: right;
    white-space: nowrap;
    border-bottom: 1px solid var(--dca-border);
}

.dca-table-wrap th:first-child,
.dca-table-wrap td:first-child {
    text-align: left;
}

.dca-table-wrap thead th {
    background: var(--dca-bg);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--dca-text-muted);
    border-bottom: 2px solid var(--dca-border);
    position: sticky;
    top: 0;
}

.dca-table-wrap tbody tr:last-child td {
    border-bottom: none;
}

.dca-table-wrap tbody tr:hover td {
    background: var(--dca-bg);
}

.dca-table-wrap tfoot td {
    font-weight: 600;
    background: var(--dca-bg);
    border-top: 2px solid var(--dca-border);
    border-bottom: none;
}

/* =========================================================================
   Disclaimer
   ========================================================================= */
.dca-disclaimer {
    font-size: 12px;
    color: var(--dca-text-muted);
    line-height: 1.6;
    background: var(--dca-warning-bg);
    border: 1px solid #fef08a;
    border-radius: var(--dca-radius-sm);
    padding: 12px 16px;
    margin-top: 20px;
}

.dca-disclaimer strong {
    color: var(--dca-warning-text);
}

/* =========================================================================
   SEO content sections
   ========================================================================= */

/**
 * Outer wrapper — matches calculator max-width and font baseline.
 * Sits below #dca-calculator-root, outside the calculator card stack.
 */
.dca-seo-content {
    max-width: 1000px;
    margin: 40px auto 0;
    padding: 0;
    font-family: var(--dca-font, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif);
    font-size: 15px;
    color: var(--dca-text, #1e293b);
    line-height: 1.7;
}

/* Heading hierarchy inside the SEO block */
.dca-seo-content h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dca-text, #1e293b);
    margin: 36px 0 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--dca-border, #e2e8f0);
    line-height: 1.3;
}

.dca-seo-content h2:first-of-type {
    margin-top: 28px;
}

.dca-seo-content p {
    margin: 0 0 16px;
}

.dca-seo-content ul {
    margin: 0 0 16px;
    padding-left: 24px;
}

.dca-seo-content ul li {
    margin-bottom: 8px;
}

/* -------------------------------------------------------------------------
   "What this calculator shows" callout box
   ------------------------------------------------------------------------- */
.dca-what-it-shows {
    background: #f0f7ff;
    border-left: 4px solid var(--dca-accent, #2563eb);
    border-radius: 0 6px 6px 0;
    padding: 16px 20px;
    margin: 24px 0 32px;
}

.dca-what-it-shows strong {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--dca-accent, #2563eb);
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: 10px;
}

.dca-what-it-shows ul {
    margin: 0;
    padding-left: 20px;
}

.dca-what-it-shows ul li {
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--dca-text, #1e293b);
}

/* -------------------------------------------------------------------------
   FAQ — dl/dt/dd
   ------------------------------------------------------------------------- */
.dca-faq {
    margin: 16px 0 0;
}

.dca-faq > div {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--dca-border, #e2e8f0);
}

.dca-faq > div:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.dca-faq dt {
    font-weight: 600;
    font-size: 15px;
    color: var(--dca-text, #1e293b);
    margin-bottom: 6px;
}

.dca-faq dd {
    margin: 0;
    padding-left: 16px;
    color: var(--dca-text-muted, #64748b);
    font-size: 14px;
    line-height: 1.65;
}

/* -------------------------------------------------------------------------
   SEO-section disclaimer (different from the in-calculator disclaimer)
   ------------------------------------------------------------------------- */
.dca-seo-disclaimer {
    margin-top: 32px;
    margin-bottom: 8px;
    font-size: 12px;
    color: var(--dca-text-muted, #64748b);
    line-height: 1.6;
    background: #f8fafc;
    border-top: 2px solid var(--dca-border, #e2e8f0);
    border-radius: 0 0 6px 6px;
    padding: 14px 18px;
}

.dca-seo-disclaimer strong {
    color: var(--dca-text, #1e293b);
}

/* =========================================================================
   Responsive — tablet (≥600px)
   ========================================================================= */
@media (min-width: 600px) {
    .dca-card {
        padding: 28px 32px;
    }

    .dca-form-grid {
        grid-template-columns: 1fr 1fr;
    }

    .dca-form-row.dca-full-width {
        grid-column: 1 / -1;
    }

    .dca-summary-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .dca-chart-wrap {
        height: 320px;
    }
}

/* =========================================================================
   Responsive — desktop (≥900px)
   ========================================================================= */
@media (min-width: 900px) {
    .dca-summary-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .dca-chart-wrap {
        height: 360px;
    }
}