/* Custom styling & micro-polish for TheUtilityCalc.com (Plan2.md Compliant) */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

body {
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.font-mono-numbers {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

/* Beautiful elevation shadow styles referencing design skills */
.elevation-card {
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.03);
}

.elevation-hover:hover {
    box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 10px 20px -3px rgba(15, 23, 42, 0.05);
}

.elevation-primary {
    box-shadow: 0 8px 30px -4px rgba(16, 185, 129, 0.18);
}

/* Range slider styling */
input[type=range] {
    -webkit-appearance: none;
    background: transparent;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 22px;
    width: 22px;
    border-radius: 9999px;
    background: #059669;
    border: 3px solid #ffffff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    margin-top: -8px;
    transition: transform 0.15s ease;
}

input[type=range]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 6px;
    cursor: pointer;
    background: #e2e8f0;
    border-radius: 9999px;
}

/* Dynamic Ad Slot Refresh Animation (Boosts Active View rate > 85%) */
@keyframes adSmoothFade {
    0% {
        opacity: 0.4;
        transform: scale(0.99);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.ad-refreshing {
    animation: adSmoothFade 0.35s ease-out forwards;
}

/* Official Print & PDF Certificate Styles */
@media print {
    header, footer, nav, aside, button, .no-print, #mobile-sticky-bar {
        display: none !important;
    }
    
    body {
        background: #ffffff !important;
        color: #000000 !important;
        font-size: 11pt !important;
    }
    
    .print-certificate {
        display: block !important;
        border: 2px solid #0f172a !important;
        padding: 24px !important;
        margin: 0 auto !important;
        max-width: 100% !important;
        page-break-inside: avoid;
    }

    .elevation-card, .shadow-sm, .shadow-md, .shadow-lg, .shadow-xl {
        box-shadow: none !important;
        border: 1px solid #94a3b8 !important;
    }
}

.print-certificate {
    display: none;
}