/* Flat Rate Calculator */
.frc-calc {
    --frc-accent: #2563eb;
    --frc-track: #e5e7eb;
    --frc-ink: #1f2937;
    --frc-muted: #6b7280;
    --frc-card: #ffffff;
    max-width: 480px;
    margin: 0 auto;
    padding: 24px;
    background: var(--frc-card, #fff);
    border: 1px solid var(--frc-track, #e5e7eb);
    border-radius: 14px;
    box-shadow: 0 4px 18px rgba(0, 0, 0, .06);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--frc-ink);
    box-sizing: border-box;
}
.frc-calc *,
.frc-calc *::before,
.frc-calc *::after { box-sizing: border-box; }

.frc-title {
    margin: 0 0 20px;
    font-size: 20px;
    font-weight: 700;
    color: var(--frc-ink);
    text-align: center;
}

.frc-empty { color: var(--frc-muted); font-size: 14px; text-align: center; margin: 0; }

.frc-slider { margin-bottom: 22px; }
.frc-slider:last-child { margin-bottom: 8px; }

.frc-slider-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 10px;
}
.frc-slider-label { font-size: 14px; font-weight: 600; color: var(--frc-ink); }
.frc-slider-value { font-size: 14px; font-weight: 700; color: var(--frc-accent); }
.frc-slider-value .frc-unit { font-weight: 500; color: var(--frc-muted); font-size: 13px; }

/* Range input — cross-browser, with an accent fill driven by --frc-fill.
   The .frc-calc prefix + !important defend against theme form styles that
   would otherwise reset our custom slider back to the browser default. */
.frc-calc .frc-range {
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    width: 100% !important;
    height: 8px !important;
    min-height: 0 !important;
    max-width: none !important;
    border: none !important;
    border-radius: 99px !important;
    outline: none !important;
    margin: 4px 0 !important;
    padding: 0 !important;
    box-shadow: none !important;
    cursor: pointer;
    background: linear-gradient(to right,
        var(--frc-accent) 0%,
        var(--frc-accent) var(--frc-fill, 0%),
        var(--frc-track) var(--frc-fill, 0%),
        var(--frc-track) 100%) !important;
}
.frc-calc .frc-range::-webkit-slider-runnable-track {
    -webkit-appearance: none !important;
    height: 8px !important;
    background: transparent !important;
    border: none !important;
    border-radius: 99px !important;
}
.frc-calc .frc-range::-webkit-slider-thumb {
    -webkit-appearance: none !important;
    appearance: none !important;
    width: 22px !important;
    height: 22px !important;
    margin-top: -7px !important; /* centre 22px thumb on the 8px track */
    border-radius: 50% !important;
    background: #fff !important;
    border: 3px solid var(--frc-accent) !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .2) !important;
    cursor: grab;
    transition: transform .12s ease;
}
.frc-calc .frc-range::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.12); }
.frc-calc .frc-range::-moz-range-thumb {
    width: 22px !important;
    height: 22px !important;
    border-radius: 50% !important;
    background: #fff !important;
    border: 3px solid var(--frc-accent) !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .2) !important;
    cursor: grab;
}
.frc-calc .frc-range::-moz-range-track { height: 8px !important; border-radius: 99px !important; background: transparent !important; border: none !important; }
.frc-calc .frc-range:focus-visible { box-shadow: 0 0 0 3px color-mix(in srgb, var(--frc-accent) 25%, transparent) !important; }

.frc-slider-sub {
    margin-top: 8px;
    font-size: 12px;
    color: var(--frc-muted);
}
.frc-slider-sub .frc-sub { font-weight: 600; color: var(--frc-ink); }

.frc-summary {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px dashed var(--frc-track, #e5e7eb);
}
.frc-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    color: var(--frc-muted);
    margin-bottom: 8px;
}
.frc-base-row .frc-base-amt { color: var(--frc-ink); font-weight: 600; }

.frc-total-row {
    margin: 6px 0 0;
    padding: 14px 16px;
    background: color-mix(in srgb, var(--frc-accent) 8%, #fff);
    border: 1px solid color-mix(in srgb, var(--frc-accent) 25%, #fff);
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    color: var(--frc-ink);
}
.frc-total-row .frc-total-amt {
    font-size: 22px;
    font-weight: 800;
    color: var(--frc-accent);
}

/* Add-ons (checkboxes) */
.frc-addons { margin: 4px 0 18px; display: flex; flex-direction: column; gap: 8px; }
.frc-addon {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--frc-track, #e5e7eb);
    border-radius: 10px;
    cursor: pointer;
    transition: border-color .15s, background .15s;
}
.frc-addon:hover { border-color: var(--frc-accent); }
.frc-addon-input { width: 17px; height: 17px; accent-color: var(--frc-accent); cursor: pointer; flex: none; }
.frc-addon-label { flex: 1; font-size: 14px; font-weight: 500; }
.frc-addon-amt { font-size: 13px; font-weight: 700; color: var(--frc-accent); }
.frc-addon:has(.frc-addon-input:checked) {
    border-color: var(--frc-accent);
    background: color-mix(in srgb, var(--frc-accent) 6%, #fff);
}

/* Discount slider reuses .frc-slider styles. */
.frc-discount { margin-top: 4px; }

/* Loan mode */
.frc-loan-rate-note {
    margin: 2px 0 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--frc-muted);
    text-align: center;
}
.frc-loan-line span:last-child { color: var(--frc-ink); font-weight: 600; }

/* Breakdown lines */
.frc-lines { margin-bottom: 8px; }
.frc-line { font-size: 13px; }
.frc-line-neg { color: #16a34a; font-weight: 600; }

/* Email-the-quote */
.frc-email {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px dashed var(--frc-track, #e5e7eb);
}
.frc-email-fields { display: flex; gap: 10px; margin-bottom: 10px; }
.frc-email-fields input { flex: 1; min-width: 0; }
.frc-email input,
.frc-email textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    box-sizing: border-box;
    margin-bottom: 10px;
}
.frc-email-fields input { margin-bottom: 0; }
.frc-email input:focus,
.frc-email textarea:focus {
    outline: none;
    border-color: var(--frc-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--frc-accent) 18%, transparent);
}
.frc-email-btn {
    width: 100%;
    padding: 12px 16px;
    border: none;
    border-radius: 9px;
    background: var(--frc-accent);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: filter .15s, transform .12s;
}
.frc-email-btn:hover { filter: brightness(1.06); transform: translateY(-1px); }
.frc-email-btn:disabled { opacity: .6; cursor: progress; transform: none; }
.frc-email-status { font-size: 13px; font-weight: 600; margin: 10px 0 0; min-height: 1px; }
.frc-email-status.frc-wait { color: var(--frc-muted); }
.frc-email-status.frc-ok   { color: #16a34a; }
.frc-email-status.frc-err  { color: #dc2626; }

@media (max-width: 520px) {
    .frc-calc { padding: 18px; border-radius: 12px; }
    .frc-total-row .frc-total-amt { font-size: 20px; }
    .frc-email-fields { flex-direction: column; gap: 0; }
    .frc-email-fields input { margin-bottom: 10px; }
}