/* ====================================================================
   Concrete Calculator — styles (v1.0.1)

   Hardened against theme bleed-through:
   - One explicit sans-serif stack is FORCED on every element inside the
     widget (themes that style p / h2 / label / small directly can no
     longer change the calculator's type).
   - Form controls get `font: inherit` (inputs/selects/buttons never
     inherit fonts on their own — this was the mixed-font bug).
   - Every selector is prefixed with .concal-wrapper so specificity is
     at least (0,2,0), which outranks theme rules like `.entry-content h2`.
   - Outer margins use a doubled class so block-theme layout rules
     (`.is-layout-flow > *` etc.) can't collapse the space above the calc.

   Per-site overrides (drop in Additional CSS):
     .concal-wrapper { --concal-accent: #b45309; }
     .concal-wrapper { --concal-font: var(--wp--preset--font-family-body); }
   ==================================================================== */

.concal-wrapper {
    --concal-accent: #1d4ed8;
    --concal-accent-dark: #1a43bf;
    --concal-border: #d8dce3;
    --concal-bg: #ffffff;
    --concal-results-bg: #f4f6f9;
    --concal-text: #1f2430;
    --concal-muted: #5b6472;
    /* Sans-serif system stack (deliberately not Inter). Point this at a
       theme preset to match the site, e.g.
       --concal-font: var(--wp--preset--font-family-body); */
    --concal-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "Noto Sans", sans-serif;

    box-sizing: border-box;
    max-width: 720px;
    padding: clamp(1.25rem, 4vw, 2rem);
    background: var(--concal-bg);
    border: 1px solid var(--concal-border);
    border-top: 4px solid var(--concal-accent);
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 6px 24px rgba(16, 24, 40, 0.06);
    color: var(--concal-text);
    font-family: var(--concal-font) !important;
    font-size: 1rem !important;
    line-height: 1.55;
    /* Neutralize hostile inherited styles (e.g. the widget being placed
       inside a Preformatted/Code block, condensed heading fonts, etc.) */
    white-space: normal !important;
    letter-spacing: normal !important;
    word-spacing: normal !important;
    text-transform: none !important;
}

/* Breathing room above and below the card. !important because block-theme
   layout rules (.is-layout-flow > *, .entry-content > :first-child) and
   cache-plugin-combined stylesheets keep winning cascade ties otherwise.
   Scoped to this widget only — safe. */
.concal-wrapper.concal-wrapper {
    margin-block: clamp(2.25rem, 5vw, 3.25rem) !important;
    margin-inline: auto !important;
}

.concal-wrapper *,
.concal-wrapper *::before,
.concal-wrapper *::after {
    box-sizing: inherit;
}

/* --------------------------------------------------------------
   FONT LOCKDOWN
   Direct element rules in a theme (p, h2, label, small, span…)
   override inheritance, and `.entry-content p`-style rules tie or
   beat plain class selectors — so the family is asserted with
   !important on everything inside the widget. Scoped, deliberate,
   and the correct tool for an embedded third-party widget.
   -------------------------------------------------------------- */
.concal-wrapper :is(h2, h3, p, label, small, span, div, strong, em) {
    font-family: var(--concal-font) !important;
    letter-spacing: normal !important;
    text-transform: none !important;
    white-space: normal !important;
}
/* Form controls don't inherit fonts by default — force it. */
.concal-wrapper :is(input, select, button, textarea) {
    font: inherit;
    font-family: var(--concal-font) !important;
}

/* ---------------- header ---------------- */
.concal-wrapper .concal-title {
    margin: 0 0 0.4rem;
    font-size: clamp(1.3rem, 3vw, 1.55rem);
    font-weight: 700;
    letter-spacing: normal;
    text-transform: none;
    line-height: 1.25;
    color: var(--concal-text);
}
.concal-wrapper .concal-subtitle {
    margin: 0 0 1.5rem;
    color: var(--concal-muted);
    font-size: 0.95rem;
    font-weight: 400;
}

/* ---------------- form ---------------- */
.concal-wrapper .concal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.1rem 1.25rem;
}
@media (max-width: 540px) {
    .concal-wrapper .concal-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.concal-wrapper .concal-field label {
    display: block;
    margin: 0 0 0.35rem;
    font-weight: 600;
    font-size: 0.92rem;
    line-height: 1.3;
    color: var(--concal-text);
}
.concal-wrapper .concal-unit {
    font-weight: 400;
    color: var(--concal-muted);
}

.concal-wrapper .concal-field input[type="number"],
.concal-wrapper .concal-field select {
    width: 100%;
    min-height: 2.75rem; /* 44px touch target */
    padding: 0.55rem 0.75rem;
    font-size: 1rem;
    color: var(--concal-text);
    background: #fff;
    border: 1px solid var(--concal-border);
    border-radius: 8px;
    appearance: auto;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.concal-wrapper .concal-field input[type="number"]:hover,
.concal-wrapper .concal-field select:hover {
    border-color: #b9c0cc;
}
.concal-wrapper .concal-field input[type="number"]:focus,
.concal-wrapper .concal-field select:focus {
    outline: none;
    border-color: var(--concal-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--concal-accent) 22%, transparent);
}
/* Fallback ring for browsers without color-mix */
@supports not (color: color-mix(in srgb, red 50%, blue)) {
    .concal-wrapper .concal-field input[type="number"]:focus,
    .concal-wrapper .concal-field select:focus {
        outline: 2px solid var(--concal-accent);
        outline-offset: 1px;
    }
}
.concal-wrapper .concal-field input::placeholder {
    color: #9aa2af;
    opacity: 1;
}

.concal-wrapper .concal-hint {
    display: block;
    margin-top: 0.3rem;
    min-height: 1em;
    color: var(--concal-muted);
    font-size: 0.82rem;
    line-height: 1.35;
}

.concal-wrapper .concal-field-checkbox {
    margin-top: 1.25rem;
}
.concal-wrapper .concal-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
}
.concal-wrapper .concal-checkbox-label input[type="checkbox"] {
    margin-top: 0.18rem;
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--concal-accent);
    cursor: pointer;
    flex: none;
}
.concal-wrapper .concal-field-checkbox .concal-hint {
    margin-left: 1.7rem; /* aligns under the label text, not the box */
}

/* ---------------- actions ---------------- */
.concal-wrapper .concal-actions {
    margin-top: 1.5rem;
}
.concal-wrapper .concal-button {
    display: inline-block;
    width: auto;
    min-height: 3rem;
    padding: 0.75rem 1.75rem;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #fff;
    background: var(--concal-accent);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.1);
    transition: background-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}
.concal-wrapper .concal-button:hover {
    background: var(--concal-accent-dark);
    box-shadow: 0 2px 6px rgba(16, 24, 40, 0.18);
}
.concal-wrapper .concal-button:active {
    transform: translateY(1px);
    box-shadow: none;
}
.concal-wrapper .concal-button:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--concal-accent) 35%, transparent);
    outline-offset: 2px;
}
@media (max-width: 540px) {
    .concal-wrapper .concal-button {
        width: 100%; /* full-width tap target on phones */
    }
}

.concal-wrapper .concal-validation {
    margin: 1rem 0 0;
    padding: 0.65rem 0.85rem;
    background: #fdf2f2;
    border: 1px solid #f3c4c4;
    border-radius: 8px;
    color: #9b2226;
    font-size: 0.92rem;
}

/* ---------------- results ---------------- */
.concal-wrapper .concal-results {
    margin-top: 1.75rem;
    padding: 1.25rem 1.4rem;
    background: var(--concal-results-bg);
    border: 1px solid var(--concal-border);
    border-radius: 10px;
    scroll-margin-top: 6rem; /* keeps results clear of sticky headers on scrollIntoView */
    animation: concal-fade-in 0.25s ease-out;
}
@keyframes concal-fade-in {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
    .concal-wrapper .concal-results {
        animation: none;
    }
    .concal-wrapper .concal-button,
    .concal-wrapper .concal-field input[type="number"],
    .concal-wrapper .concal-field select {
        transition: none;
    }
}

.concal-wrapper .concal-results-title {
    margin: 0 0 0.9rem;
    font-size: 1.15rem;
    font-weight: 700;
    text-transform: none;
    letter-spacing: normal;
    color: var(--concal-text);
}

.concal-wrapper .concal-line {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--concal-border);
    font-size: 0.95rem;
}
.concal-wrapper .concal-line-info {
    color: var(--concal-muted);
    font-size: 0.88rem;
}
.concal-wrapper .concal-line-label small {
    display: block;
    margin-top: 0.1rem;
    color: var(--concal-muted);
    font-weight: 400;
    font-size: 0.8rem;
}
.concal-wrapper .concal-line-value {
    white-space: nowrap;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}
.concal-wrapper .concal-line-info .concal-line-value {
    font-weight: 400;
}

.concal-wrapper .concal-total {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.25rem 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid var(--concal-accent);
}
.concal-wrapper .concal-total-label {
    font-weight: 700;
    font-size: 1.05rem;
}
.concal-wrapper .concal-total-value {
    font-weight: 800;
    font-size: clamp(1.5rem, 4vw, 1.8rem);
    color: var(--concal-accent);
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
}

.concal-wrapper .concal-note {
    margin: 1rem 0 0;
    color: var(--concal-muted);
    font-size: 0.88rem;
    line-height: 1.5;
}

/* ---------------- disclaimer / errors ---------------- */
.concal-wrapper .concal-disclaimer {
    margin: 1.25rem 0 0;
    color: var(--concal-muted);
    font-size: 0.82rem;
    line-height: 1.5;
}
.concal-error {
    max-width: 720px;
    margin: 1rem auto;
    padding: 0.8rem 1rem;
    background: #fdf2f2;
    border: 1px solid #f3c4c4;
    border-radius: 8px;
    color: #9b2226;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}