:root{--omni-primary:#3B68FC;--omni-secondary:#BE05C1;--omni-background:#F7F9FF;--omni-text:#0A0A0A;--omni-border:#E3E4ED;--omni-muted:#646464;--omni-white:#FFFFFF;--omni-font-family:'Poppins',system-ui,-apple-system,'Segoe UI','Segoe UI Emoji','Apple Color Emoji','Noto Color Emoji',Verdana,sans-serif;--omni-font-size:15px;--omni-line-height:141%}.dark,:root.dark{--omni-text:#f8fafc;--omni-background:#0f172a;--omni-white:#1e293b;--omni-border:#334155;--omni-muted:#94a3b8}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;box-sizing:border-box}*,::after,::before{box-sizing:inherit}body{margin:0;color:var(--omni-text);font-family:var(--omni-font-family);font-size:var(--omni-font-size);font-weight:400;line-height:var(--omni-line-height)}.omni-header{z-index:1202;top:0;background:var(--omni-white);width:100%;box-shadow:0 6px 16px 0 rgba(59,104,252,.1),0 1px 2.8px 1px rgba(41,76,194,.06);padding:8px 16px;position:fixed}.omni-header .navbar-brand{color:var(--omni-primary);font-weight:600;font-size:18px}.omni-header .nav-link{color:var(--omni-text);font-weight:500;padding:8px 16px;transition:color .2s ease}.omni-header .nav-link:hover{color:var(--omni-primary)}h1,h2,h3,h4,h5,h6{font-family:var(--omni-font-family);font-weight:600;line-height:1.3;color:var(--omni-text);margin-top:0}h1{font-size:32px}h2{font-size:28px}h3{font-size:24px}h4{font-size:20px}p{margin:16px 0;line-height:var(--omni-line-height)}a{color:var(--omni-secondary);text-decoration:underline;text-decoration-color:rgba(190,5,193,0.4);transition:text-decoration-color .2s ease}a:hover{text-decoration-color:inherit}.btn-omni-primary{background-color:var(--omni-primary);border:none;border-radius:8px;color:#fff;padding:10px 20px;font-weight:500;transition:background-color .2s ease}.btn-omni-primary:hover{background-color:#2952e8;color:#fff}.btn-omni-secondary{background-color:var(--omni-secondary);border:none;border-radius:8px;color:#fff;padding:10px 20px;font-weight:500;transition:background-color .2s ease}.btn-omni-secondary:hover{background-color:#a304a5;color:#fff}.omni-card{background-color:var(--omni-white);border-radius:20px;box-shadow:0 2px 8px rgba(0,0,0,.05);overflow:hidden;padding:24px;margin-bottom:24px}.omni-card-small{border-radius:16px;padding:16px}.omni-card-header{font-size:24px;font-weight:600;margin-bottom:16px;color:var(--omni-text)}.omni-background{background-color:var(--omni-background);min-height:100vh;padding-top:80px}@media (min-width:584px){.omni-background{background-image:url('../images/background/bg-tablet.svg');background-repeat:no-repeat;background-position:top center;background-size:100% auto}}@media (min-width:1006px){.omni-background{background-image:url('../images/background/bg-desktop.svg')}}.omni-container{max-width:984px;margin:0 auto;padding:0 16px}.omni-container-wide{max-width:1400px;margin:0 auto;padding:0 16px}.calculator-container{display:grid;grid-template-columns:1fr;gap:24px;max-width:984px;margin:0 auto}@media (min-width:1006px){.calculator-container{grid-template-columns:1fr 308px;max-width:1292px}}@media (min-width:1570px){.calculator-container{grid-template-columns:308px 1fr 308px;max-width:1600px}}.calculator-main{background:var(--omni-white);border-radius:20px;padding:32px}.calculator-sidebar{background:var(--omni-white);border-radius:20px;padding:16px}.omni-breadcrumb{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;background-color:rgba(59,104,252,.1);border-radius:8px;font-size:14px;color:var(--omni-primary);margin-bottom:16px}.omni-breadcrumb:hover{background-color:rgba(59,104,252,.15);text-decoration:none}.omni-faq-section{margin-top:48px}.omni-faq-title{font-size:28px;font-weight:600;margin-bottom:24px}.omni-accordion-item{background:var(--omni-white);border:1px solid var(--omni-border);border-radius:12px;margin-bottom:12px;overflow:hidden}.omni-accordion-button{background:var(--omni-white);border:none;width:100%;text-align:left;padding:16px 20px;font-size:16px;font-weight:500;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background-color .2s ease}.omni-accordion-button:hover{background-color:var(--omni-background)}.omni-accordion-content{padding:0 20px 16px;line-height:1.6}.author-profile{display:flex;flex-direction:column;align-items:center;text-align:center;padding:32px;background:var(--omni-white);border-radius:20px;margin-bottom:24px}.author-avatar{width:168px;height:168px;border-radius:50%;object-fit:cover;margin-bottom:16px;border:4px solid var(--omni-background)}.author-name{font-size:32px;font-weight:600;margin:8px 0}.author-title{font-size:18px;color:var(--omni-muted);margin-bottom:16px}.author-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:24px;width:100%;margin-top:24px;padding-top:24px;border-top:1px solid var(--omni-border)}.author-stat{text-align:center}.author-stat-number{font-size:28px;font-weight:600;color:var(--omni-primary);display:block}.author-stat-label{font-size:14px;color:var(--omni-muted);margin-top:4px}.author-bio{background:var(--omni-white);border-radius:16px;padding:24px;margin-bottom:24px}.author-info-card{background:var(--omni-white);border-radius:16px;padding:24px;margin-bottom:24px}.author-info-title{font-size:20px;font-weight:600;margin-bottom:16px}.author-info-list{list-style:none;padding:0;margin:0}.author-info-list li{padding:8px 0;border-bottom:1px solid var(--omni-border)}.author-info-list li:last-child{border-bottom:none}.hero-section{text-align:center;padding:60px 20px 40px}.hero-title{font-size:48px;font-weight:700;margin-bottom:16px;color:var(--omni-text)}.hero-subtitle{font-size:20px;color:var(--omni-muted);margin-bottom:32px}.search-bar-container{max-width:600px;margin:0 auto 48px}.omni-search-input{width:100%;padding:16px 24px;font-size:16px;border:2px solid var(--omni-border);border-radius:12px;outline:0;transition:border-color .2s ease}.omni-search-input:focus{border-color:var(--omni-primary)}.calculators-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-bottom:48px}@media (min-width:584px){.calculators-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1006px){.calculators-grid{grid-template-columns:repeat(3,1fr)}}.calculator-card{background:var(--omni-white);border-radius:16px;padding:24px;transition:transform .2s ease,box-shadow .2s ease;cursor:pointer;text-decoration:none;display:block}.calculator-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(59,104,252,.15);text-decoration:none}.calculator-card-icon{font-size:32px;color:var(--omni-primary);margin-bottom:12px}.calculator-card-title{font-size:18px;font-weight:600;color:var(--omni-text);margin-bottom:8px}.calculator-card-description{font-size:14px;color:var(--omni-muted);line-height:1.5}.category-tag{display:inline-block;padding:6px 12px;background-color:rgba(59,104,252,.1);color:var(--omni-primary);border-radius:8px;font-size:13px;font-weight:500;text-decoration:none;margin:4px;transition:background-color .2s ease}.category-tag:hover{background-color:rgba(59,104,252,.2);text-decoration:none}.omni-form-group{margin-bottom:20px}.omni-form-label{display:block;font-weight:500;margin-bottom:8px;color:var(--omni-text)}.omni-form-input,.omni-form-select,.omni-form-textarea{width:100%;padding:12px 16px;font-size:15px;border:2px solid var(--omni-border);border-radius:8px;outline:0;transition:border-color .2s 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.hero-immersive{position:relative;min-height:500px;display:flex;align-items:center;justify-content:center;padding:80px 20px 60px;overflow:hidden}.hero-background{position:absolute;top:0;left:0;width:100%;height:100%;z-index:-1;opacity:.4}.hero-content{text-align:center;max-width:800px;z-index:10;position:relative}.hero-title{font-size:49px;font-weight:700;margin-bottom:20px;color:var(--omni-text);line-height:1.2}.hero-subtitle{font-size:20px;color:var(--omni-muted);margin-bottom:40px}.animate-fade-in{animation:fadeIn 1s ease-in-out}@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.search-bar-advanced{position:relative;max-width:600px;margin:0 auto 32px}#calculator-search{width:100%;padding:18px 24px;font-size:16px;border:2px solid var(--omni-border);border-radius:50px;outline:0;transition:all .3s ease;box-shadow:0 4px 12px rgba(59,104,252,.1)}#calculator-search:focus{border-color:var(--omni-primary);box-shadow:0 6px 20px rgba(59,104,252,.2)}.search-suggestions{position:absolute;top:100%;left:0;right:0;margin-top:8px;background:var(--omni-white);border-radius:16px;box-shadow:0 8px 32px rgba(0,0,0,.12);max-height:400px;overflow-y:auto;z-index:1000;display:none}.search-suggestions.show{display:block}.search-results-dropdown{padding:12px}.results-section{margin-bottom:16px}.results-section h4{font-size:12px;font-weight:600;color:var(--omni-muted);text-transform:uppercase;margin:8px 12px;letter-spacing:.5px}.search-result-item{display:flex;align-items:center;gap:12px;padding:12px;border-radius:8px;text-decoration:none;color:var(--omni-text);transition:background-color .2s ease}.search-result-item:hover{background-color:var(--omni-background);text-decoration:none}.search-result-item i{color:var(--omni-primary);font-size:18px;width:24px;text-align:center}.search-result-item strong{display:block;font-size:14px;margin-bottom:2px}.search-result-item small{color:var(--omni-muted);font-size:12px}.view-all-results{display:block;text-align:center;padding:12px;color:var(--omni-primary);font-weight:500;text-decoration:none;border-top:1px solid var(--omni-border);margin-top:8px}.view-all-results:hover{background-color:var(--omni-background);text-decoration:none}.quick-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px}.action-chip{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;background:var(--omni-white);border:2px solid var(--omni-border);border-radius:50px;color:var(--omni-text);text-decoration:none;font-size:14px;font-weight:500;transition:all .3s ease}.action-chip:hover{background:var(--omni-primary);color:#fff;border-color:var(--omni-primary);transform:translateY(-2px);box-shadow:0 4px 12px rgba(59,104,252,.3);text-decoration:none}.action-chip i{font-size:16px}.calculator-card-premium{position:relative;background:var(--omni-white);border-radius:20px;padding:28px;transition:all .3s ease;border:1px solid var(--omni-border);height:100%;display:flex;flex-direction:column}.calculator-card-premium:hover{transform:translateY(-8px);box-shadow:0 12px 36px rgba(59,104,252,.15);border-color:var(--omni-primary)}.card-badge{position:absolute;top:16px;right:16px;background:linear-gradient(135deg,var(--omni-primary),var(--omni-secondary));color:#fff;padding:4px 12px;border-radius:50px;font-size:12px;font-weight:600}.card-icon{width:64px;height:64px;background:linear-gradient(135deg,rgba(59,104,252,.1),rgba(190,5,193,.1));border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}.card-icon i{font-size:32px;background:linear-gradient(135deg,var(--omni-primary),var(--omni-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.calculator-card-premium h3{font-size:20px;font-weight:600;margin-bottom:12px;color:var(--omni-text)}.calculator-card-premium p{color:var(--omni-muted);font-size:14px;line-height:1.6;margin-bottom:16px;flex-grow:1}.card-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;padding-top:16px;border-top:1px solid var(--omni-border)}.category-badge,.usage-count{font-size:13px;color:var(--omni-muted)}.category-badge{background:rgba(59,104,252,.1);color:var(--omni-primary);padding:4px 12px;border-radius:8px;font-weight:500}.card-cta{display:inline-flex;align-items:center;justify-content:center;width:100%;padding:12px;background:var(--omni-primary);color:#fff;text-decoration:none;border-radius:12px;font-weight:500;transition:all .3s ease}.card-cta:hover{background:#2952e8;color:#fff;transform:scale(1.02);text-decoration:none}.calculator-carousel{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;margin:32px 0}@media (min-width:1006px){.calculator-carousel{grid-template-columns:repeat(3,1fr)}}.category-card-modern{position:relative;background:var(--omni-white);border-radius:20px;padding:32px;text-decoration:none;display:block;overflow:hidden;border:2px solid var(--omni-border);transition:all .3s ease}.category-card-modern:hover{border-color:var(--omni-primary);transform:translateY(-4px);box-shadow:0 12px 32px rgba(59,104,252,.15);text-decoration:none}.category-icon-wrapper{width:72px;height:72px;background:linear-gradient(135deg,rgba(59,104,252,.1),rgba(190,5,193,.1));border-radius:18px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}.category-icon-wrapper i{font-size:36px;background:linear-gradient(135deg,var(--omni-primary),var(--omni-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.category-card-modern h3{font-size:22px;font-weight:600;color:var(--omni-text);margin-bottom:12px}.category-card-modern p{color:var(--omni-muted);font-size:14px;line-height:1.6;margin-bottom:16px}.category-stats{color:var(--omni-primary);font-size:13px;font-weight:500}.category-hover-effect{position:absolute;bottom:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--omni-primary),var(--omni-secondary));transform:scaleX(0);transition:transform .3s ease}.category-card-modern:hover .category-hover-effect{transform:scaleX(1)}.section-header-with-tabs{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.time-filter{display:flex;gap:8px;background:var(--omni-white);padding:4px;border-radius:12px;border:1px solid var(--omni-border)}.time-filter button{padding:8px 16px;border:none;background:0 0;border-radius:8px;font-size:14px;font-weight:500;color:var(--omni-muted);cursor:pointer;transition:all .2s ease}.time-filter button.active{background:var(--omni-primary);color:#fff}.time-filter button:hover:not(.active){background:var(--omni-background)}.trending-grid{display:grid;gap:16px}.trending-item{display:flex;align-items:center;gap:20px;background:var(--omni-white);padding:20px;border-radius:16px;border:1px solid var(--omni-border);transition:all .3s ease}.trending-item:hover{border-color:var(--omni-primary);box-shadow:0 8px 24px rgba(59,104,252,.1);transform:translateX(4px)}.rank-badge{width:48px;height:48px;background:linear-gradient(135deg,var(--omni-primary),var(--omni-secondary));border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;font-weight:700;flex-shrink:0}.trending-content{flex-grow:1}.trending-content h4{font-size:18px;font-weight:600;margin-bottom:8px}.trending-content p{color:var(--omni-muted);font-size:14px;margin-bottom:12px}.trending-stats{display:flex;gap:16px}.stat-item{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--omni-muted)}.stat-item i{color:var(--omni-primary)}.trending-link{padding:10px 20px;background:var(--omni-primary);color:#fff;text-decoration:none;border-radius:10px;font-weight:500;transition:all .2s ease;flex-shrink:0}.trending-link:hover{background:#2952e8;color:#fff;transform:scale(1.05);text-decoration:none}.blog-card-premium{background:var(--omni-white);border-radius:20px;overflow:hidden;border:1px solid var(--omni-border);transition:all .3s ease;height:100%;display:flex;flex-direction:column}.blog-card-premium:hover{border-color:var(--omni-primary);box-shadow:0 12px 36px rgba(59,104,252,.15);transform:translateY(-4px)}.blog-image-wrapper{position:relative;width:100%;height:220px;overflow:hidden}.blog-image-wrapper img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.blog-card-premium:hover .blog-image-wrapper img{transform:scale(1.1)}.blog-category-overlay{position:absolute;top:16px;left:16px;background:var(--omni-white);padding:6px 14px;border-radius:50px;font-size:12px;font-weight:600;color:var(--omni-primary)}.blog-content{padding:24px;flex-grow:1;display:flex;flex-direction:column}.blog-meta{display:flex;align-items:center;gap:8px;margin-bottom:12px;font-size:13px;color:var(--omni-muted)}.author-avatar-sm{width:28px;height:28px;border-radius:50%;object-fit:cover}.dot{color:var(--omni-border)}.blog-content h3{font-size:18px;font-weight:600;margin-bottom:12px;line-height:1.4}.blog-content p{color:var(--omni-muted);font-size:14px;line-height:1.6;margin-bottom:16px;flex-grow:1}.read-more{color:var(--omni-primary);font-weight:500;text-decoration:none;display:inline-flex;align-items:center;gap:6px;transition:gap .3s ease}.read-more:hover{gap:10px;text-decoration:none}.social-proof{display:flex;gap:24px;flex-wrap:wrap;margin-top:16px}.stat-inline{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--omni-muted)}.stat-inline i{color:var(--omni-primary)}.input-with-unit{display:flex;gap:8px}.input-with-unit input{flex-grow:1}.unit-selector{padding:12px;border:2px solid var(--omni-border);border-radius:8px;background:var(--omni-white);font-size:15px;cursor:pointer;outline:0;transition:border-color .2s ease;min-width:80px}.unit-selector:focus{border-color:var(--omni-primary)}.select-modern{width:100%;padding:12px 16px;font-size:15px;border:2px solid var(--omni-border);border-radius:8px;background:var(--omni-white);cursor:pointer;outline:0;transition:border-color .2s ease}.select-modern:focus{border-color:var(--omni-primary)}.slider-input-group{display:flex;align-items:center;gap:16px}.slider-input-group input[type=range]{flex-grow:1;height:6px;border-radius:3px;background:var(--omni-border);outline:0;-webkit-appearance:none}.slider-input-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--omni-primary);cursor:pointer;box-shadow:0 2px 8px rgba(59,104,252,.3)}.slider-input-group input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--omni-primary);cursor:pointer;border:none;box-shadow:0 2px 8px rgba(59,104,252,.3)}.slider-input-group output{min-width:60px;text-align:center;padding:8px 12px;background:var(--omni-background);border-radius:8px;font-weight:600;color:var(--omni-primary)}.field-hint{display:block;font-size:12px;color:var(--omni-muted);margin-top:6px}.badge-new{position:absolute;top:12px;left:12px;background:#00c853;color:#fff;padding:4px 10px;border-radius:6px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.badge-featured{position:absolute;top:12px;left:12px;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;padding:4px 10px;border-radius:6px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.skeleton{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);background-size:200% 100%;animation:loading 1.5s infinite}@keyframes loading{0%{background-position:200% 0}100%{background-position:-200% 0}}@media (max-width:768px){.hero-title{font-size:36px}.hero-subtitle{font-size:16px}.calculator-carousel{grid-template-columns:1fr}.section-header-with-tabs{flex-direction:column;align-items:flex-start;gap:16px}.trending-item{flex-direction:column;text-align:center}.social-proof{flex-direction:column;gap:12px}}@media (max-width:584px){.quick-actions{justify-content:flex-start}.action-chip{font-size:13px;padding:8px 16px}}
:root{--primary:#0d6efd;--bg:var(--omni-background);--muted:var(--omni-muted)}body{font-family:Inter,system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial;color:var(--omni-text)}.site-header{box-shadow:0 1px 4px rgba(0,0,0,.04);background:var(--omni-white)}.hero{background:linear-gradient(90deg,var(--omni-background),var(--omni-white))}.calculator-container{margin-bottom:2rem;background:var(--omni-white)}.faq-section h2{margin-top:2rem;color:var(--omni-text)}.card{border-radius:8px;background:var(--omni-white)}.breadcrumb{background:0 0;padding:0;margin-bottom:1rem}.ads-placeholder{background:var(--omni-background);border:1px dashed var(--omni-border);padding:12px;text-align:center;color:var(--omni-muted)}
/**
 * Enhanced Main CSS for OmniCalculator
 * Complements Bootstrap 5.3.2 with custom styles
 */

/* ==========================================
   1. Custom Properties (CSS Variables)
   ========================================== */
:root {
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --success-gradient: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --danger-gradient: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --transition-base: all 0.3s ease;
}

/* ==========================================
   2. Global Styles
   ========================================== */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    transition: var(--transition-base);
}

/* ==========================================
   3. Gradient Backgrounds
   ========================================== */
.bg-gradient-primary {
    background: var(--primary-gradient) !important;
}

.bg-gradient-success {
    background: var(--success-gradient) !important;
}

.bg-gradient-danger {
    background: var(--danger-gradient) !important;
}

/* ==========================================
   4. Custom Animations
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* ==========================================
   5. Hover Effects
   ========================================== */
.hover-lift {
    transition: var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg) !important;
}

.hover-shadow:hover {
    box-shadow: var(--shadow-md) !important;
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* ==========================================
   6. Card Enhancements
   ========================================== */
.card {
    border-radius: 0.5rem;
    overflow: hidden;
}

.card-hover {
    transition: var(--transition-base);
    cursor: pointer;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ==========================================
   7. Button Enhancements
   ========================================== */
.btn {
    border-radius: 0.375rem;
    font-weight: 500;
    transition: var(--transition-base);
}

.btn-gradient-primary {
    background: var(--primary-gradient);
    border: none;
    color: white;
}

.btn-gradient-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==========================================
   9. Calculator Specific Styles
   ========================================== */
.calculator-container {
    background: var(--omni-white);
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.calculator-input {
    font-size: 1.1rem;
    padding: 0.75rem 1rem;
    border: 2px solid #dee2e6;
    border-radius: 0.375rem;
    transition: var(--transition-base);
}

.calculator-input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.calculator-result {
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    padding: 1.5rem;
    border-radius: 0.375rem;
    font-size: 1.25rem;
    font-weight: 600;
}

/* ==========================================
   10. Loading States
   ========================================== */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 0.375rem;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* ==========================================
   11. Breadcrumbs Enhancement
   ========================================== */
.breadcrumb {
    background: #f8f9fa;
    border-radius: 0.375rem;
    padding: 0.75rem 1rem;
}

.breadcrumb-item+.breadcrumb-item::before {
    content: "›";
    font-size: 1.2rem;
}

/* ==========================================
   12. Badge Enhancements
   ========================================== */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    border-radius: 0.25rem;
}

.badge-gradient {
    background: var(--primary-gradient);
    color: white;
}

/* ==========================================
   13. Alert Enhancements
   ========================================== */
.alert {
    border-radius: 0.5rem;
    border-left-width: 4px;
}

/* ==========================================
   14. Form Enhancements
   ========================================== */
.form-control:focus,
.form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* ==========================================
   15. Image Lazy Loading
   ========================================== */
img[loading="lazy"] {
    transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* ==========================================
   16. Back to Top Button
   ========================================== */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: white;
    border: none;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 1000;
}

#back-to-top.show {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    transform: translateY(-5px);
}

/* ==========================================
   17. Print Styles
   ========================================== */
@media print {

    .no-print,
    nav,
    footer,
    .btn {
        display: none !important;
    }

    body {
        font-size: 12pt;
    }

    a[href]:after {
        content: " (" attr(href) ")";
    }
}

/* ==========================================
   18. Responsive Utilities
   ========================================== */
@media (max-width: 767.98px) {
    h1 {
        font-size: 2rem;
    }

    .display-1 {
        font-size: 3rem;
    }

    .display-5 {
        font-size: 2rem;
    }
}

/* Tailwind-compatible responsive utilities used by ad slots */

/* md = ≥768px */
.hidden {
    display: none !important;
}

.block {
    display: block !important;
}

.flex {
    display: flex !important;
}

@media (min-width: 768px) {
    .md\:hidden {
        display: none !important;
    }

    .md\:block {
        display: block !important;
    }

    .md\:flex {
        display: flex !important;
    }
}

/* lg = ≥1024px */
@media (min-width: 1024px) {
    .lg\:hidden {
        display: none !important;
    }

    .lg\:block {
        display: block !important;
    }

    .lg\:flex {
        display: flex !important;
    }
}

/* ==========================================
   19. Accessibility Enhancements
   ========================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus visible for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* ==========================================
   20. Custom Scrollbar
   ========================================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* ==========================================
   21. Typography Enhancements
   ========================================== */
.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.lead {
    font-size: 1.1rem;
    font-weight: 300;
    line-height: 1.7;
}

/* ==========================================
   22. Utility Classes
   ========================================== */
.cursor-pointer {
    cursor: pointer;
}

.object-fit-cover {
    object-fit: cover;
}

.overflow-hidden {
    overflow: hidden;
}

.position-relative {
    position: relative;
}

/* ==========================================
   23. Custom Page Classes
   ========================================== */
.container-page {
    max-width: 1200px;
    margin: 0 auto;
}

.animate-slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.font-display {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 700;
}

.card-calculator {
    background: var(--card);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    border: 1px solid hsl(var(--border));
    transition: var(--transition-base);
}

@media (min-width: 640px) {
    .card-calculator {
        padding: 2rem;
    }
}

.card-calculator:hover {
    box-shadow: var(--shadow-card-hover);
}

.badge-category {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: hsl(155 40% 93%);
    color: hsl(155 55% 25%);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    letter-spacing: 0.01em;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.prose-content {
    max-width: none;
}

.prose-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--omni-text);
    /* Was #1f2937 */
}

.prose-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--omni-text);
    /* Was #1f2937 */
}

.prose-content p {
    margin-bottom: 1rem;
    line-height: 1.7;
    color: var(--omni-muted);
    /* Was #4b5563 */
}

.prose-content ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.prose-content li {
    margin-bottom: 0.5rem;
}

.prose-content a {
    color: #667eea;
    text-decoration: underline;
}

.prose-content a:hover {
    color: #5a67d8;
}

/* ==========================================
   24. Dark Mode Overrides
   ========================================== */
.dark body,
.dark html body {
    background-color: hsl(var(--background)) !important;
    color: hsl(var(--foreground));
}

/* TOC: force numbered list-style instead of bullets */
.dark .prose-content ul,
.dark #toc ul,
.dark nav ul,
.dark .calculator-article ul,
.prose-content ul,
#toc ul,
nav ul,
.calculator-article ul {
    list-style-type: decimal;
    padding-left: 1.5rem;
}
.dark .prose-content ul li,
.dark #toc ul li,
.dark nav ul li,
.dark .calculator-article ul li,
.prose-content ul li,
#toc ul li,
nav ul li,
.calculator-article ul li {
    margin-bottom: 0.25rem;
}

/* Text readability in dark mode */
.dark .text-muted-foreground {
    color: hsl(215 20% 70%) !important;
}
.dark .prose-content p,
.dark .calculator-article p,
.dark .content-after p {
    color: hsl(215 20% 75%) !important;
    line-height: 1.75;
}
.dark .text-foreground {
    color: hsl(var(--foreground)) !important;
}

/* Formula box: more prominent and readable */
.dark .formula-box {
    background: hsl(222 25% 14%);
    border-color: hsl(222 20% 25%);
    color: hsl(210 20% 90%);
    box-shadow: inset 0 1px 0 hsl(222 20% 20%), 0 2px 8px rgba(0,0,0,0.3);
}
.calculator-article .formula-box,
.prose-content .formula-box {
    border: 1px solid hsl(222 20% 85%);
    background: hsl(222 50% 97%);
    border-radius: 12px;
    padding: 20px 24px;
    margin: 1.25rem 0;
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 1.08rem;
    line-height: 1.8;
    color: hsl(var(--foreground));
    overflow-x: auto;
    box-shadow: inset 0 1px 0 hsl(222 50% 93%), 0 1px 4px rgba(0,0,0,0.06);
}

/* Key points / step items: more prominent than paragraph text */
.dark .calculator-article h2,
.dark .calculator-article h3,
.dark .prose-content h2,
.dark .prose-content h3 {
    color: hsl(var(--foreground)) !important;
    font-weight: 700;
}
.dark .calculator-article li,
.dark .prose-content li {
    color: hsl(215 20% 80%);
    line-height: 1.7;
}

/* Content-after stat cards / widgets: dark mode support */
.dark .calculator-article .rounded-lg,
.dark .prose-content .rounded-lg,
.dark .content-after .rounded-lg {
    background: hsl(var(--card));
    border-color: hsl(var(--border));
    color: hsl(var(--foreground));
}
.dark .calculator-article .border,
.dark .prose-content .border,
.dark .content-after .border {
    border-color: hsl(var(--border));
}
.dark .calculator-article .bg-primary\/5,
.dark .calculator-article .bg-primary\/10 {
    background: hsl(var(--primary) / 0.1);
}

/* Calculator cards in dark mode */
.dark .card-calculator {
    background: hsl(var(--card));
    border-color: hsl(var(--border));
    color: hsl(var(--foreground));
}

/* Content-after section: comprehensive dark mode */
.dark .prose-content {
    color: hsl(var(--foreground));
}
.dark .prose-content .rounded-lg,
.dark .prose-content .rounded-xl,
.dark .prose-content .rounded-2xl {
    background: hsl(var(--card)) !important;
    border-color: hsl(var(--border)) !important;
    color: hsl(var(--foreground)) !important;
}
.dark .prose-content h2,
.dark .prose-content h3 {
    color: hsl(var(--foreground)) !important;
}
.dark .prose-content a {
    color: hsl(var(--primary));
}
.dark .prose-content .bg-primary\/5,
.dark .prose-content .bg-primary\/10 {
    background: hsl(var(--primary) / 0.1) !important;
}
.dark .prose-content .bg-blue-50,
.dark .prose-content .bg-emerald-50,
.dark .prose-content .bg-amber-50,
.dark .prose-content .bg-violet-50 {
    background: hsl(var(--card)) !important;
}
.dark .prose-content .bg-blue-100,
.dark .prose-content .bg-emerald-100,
.dark .prose-content .bg-amber-100 {
    background: hsl(var(--primary) / 0.15) !important;
}
.dark .prose-content .text-blue-600,
.dark .prose-content .text-blue-800,
.dark .prose-content .text-emerald-600,
.dark .prose-content .text-emerald-800,
.dark .prose-content .text-amber-600,
.dark .prose-content .text-amber-800,
.dark .prose-content .text-violet-600 {
    color: hsl(var(--primary)) !important;
}
.dark .prose-content .border-blue-200,
.dark .prose-content .border-emerald-200,
.dark .prose-content .border-amber-200,
.dark .prose-content .border-violet-200 {
    border-color: hsl(var(--border)) !important;
}
.dark .prose-content .text-blue-900,
.dark .prose-content .text-emerald-900,
.dark .prose-content .text-amber-900,
.dark .prose-content .text-violet-900 {
    color: hsl(var(--foreground)) !important;
}
.dark .prose-content .text-blue-700,
.dark .prose-content .text-emerald-700,
.dark .prose-content .text-amber-700 {
    color: hsl(215 20% 75%) !important;
}
.dark .prose-content .text-muted-foreground,
.dark .prose-content .text-sm {
    color: hsl(215 20% 70%) !important;
}

/* Related Calculator cards — force dark bg */
.dark aside article,
.dark .related-carousel-item article,
.dark aside .bg-card {
    background-color: hsl(var(--card)) !important;
    border-color: hsl(var(--border)) !important;
    color: hsl(var(--foreground)) !important;
}

/* THIS CALCULATOR / stat cards in sidebar — force dark bg */
.dark aside .rounded-xl,
.dark aside .rounded-lg,
.dark aside .rounded-2xl {
    background-color: hsl(var(--card)) !important;
    border-color: hsl(var(--border)) !important;
}
.dark aside .border-blue-100,
.dark aside .border-blue-200 {
    border-color: hsl(var(--border)) !important;
}

/* All Bootstrap omni-card dark mode */
.dark .omni-card,
.dark .calculator-container,
.dark .card {
    background: var(--omni-white);
    color: var(--omni-text);
}

/* ==========================================
   25. Color Palette Utilities (Homepage)
   ========================================== */

/* Slate */
.text-slate-400 { color: #94a3b8; }
.text-slate-500 { color: #64748b; }
.text-slate-600 { color: #475569; }
.text-slate-700 { color: #334155; }
.text-slate-800 { color: #1e293b; }
.bg-slate-100 { background-color: #f1f5f9; }
.border-slate-200 { border-color: #e2e8f0; }
.border-slate-300 { border-color: #cbd5e1; }
.border-slate-400 { border-color: #94a3b8; }
.hover\:border-slate-300:hover { border-color: #cbd5e1; }
.hover\:border-slate-400:hover { border-color: #94a3b8; }
.hover\:text-slate-600:hover { color: #475569; }
.hover\:text-slate-700:hover { color: #334155; }
.hover\:text-foreground:hover { color: hsl(var(--foreground)); }

/* Blue */
.text-blue-200 { color: #bfdbfe; }
.text-blue-300 { color: #93c5fd; }
.text-blue-500 { color: #3b82f6; }
.text-blue-600 { color: #2563eb; }
.bg-blue-50 { background-color: #eff6ff; }
.bg-blue-100 { background-color: #dbeafe; }
.border-blue-200 { border-color: #bfdbfe; }
.hover\:border-blue-200:hover { border-color: #bfdbfe; }
.hover\:text-blue-600:hover { color: #2563eb; }
.group-hover\:text-blue-600:hover { color: #2563eb; }
.group-hover\:bg-blue-50:hover { background-color: #eff6ff; }
.group-hover\:text-blue-500:hover { color: #3b82f6; }

/* Emerald */
.text-emerald-500 { color: #10b981; }
.text-emerald-600 { color: #059669; }
.bg-emerald-50 { background-color: #ecfdf5; }
.bg-emerald-100 { background-color: #d1fae5; }

/* Violet */
.text-violet-500 { color: #8b5cf6; }
.bg-violet-50 { background-color: #f5f3ff; }

/* Amber */
.text-amber-500 { color: #f59e0b; }
.text-amber-600 { color: #d97706; }
.bg-amber-100 { background-color: #fef3c7; }

/* Missing responsive grid utilities */
@media (min-width: 640px) {
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* Missing gap utilities */
.gap-5 { gap: 1.25rem; }
.gap-10 { gap: 2.5rem; }

/* Missing margin utilities */
.mt-10 { margin-top: 2.5rem; }
.mt-14 { margin-top: 3.5rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }

/* Missing padding utilities */
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-28 { padding-top: 7rem; padding-bottom: 7rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }

/* Missing max-width */
.max-w-md { max-width: 28rem; }

/* Missing text-decoration-none for links */
.glass-card { text-decoration: none !important; }
.cat-chip { text-decoration: none !important; }

/* Ad slot responsive visibility - no specificity conflicts
   ad-desktop-only : hidden on phone, block on md+ (>=768px)
   ad-mobile-only  : block on phone, hidden on md+ (>=768px)
   ad-sidebar-only : hidden on phone/tablet, block on lg+ (>=1024px) */ � no specificity conflicts
   ad-desktop-only : hidden on phone, block on md+ (>=768px)
   ad-mobile-only  : block on phone, hidden on md+ (>=768px)
   ad-sidebar-only : hidden on phone/tablet, block on lg+ (>=1024px) */
.ad-desktop-only {
    display: none;
}

.ad-mobile-only {
    display: block;
}

.ad-sidebar-only {
    display: none;
}

@media (min-width: 768px) {
    .ad-desktop-only {
        display: block;
    }

    .ad-mobile-only {
        display: none;
    }
}

@media (min-width: 1024px) {
    .ad-sidebar-only {
        display: block;
    }
}