/* 
   NAV — estado activo
*/
.nav-active {
    background-color: var(--primary-color) !important;
    color: #fff !important;
    border-color: var(--primary-color) !important;
}

/* 
     BREADCRUMB
  */
.breadcrumb {
    padding: 0.8rem 0 0;
    max-width: 1200px;
    margin: 0 auto;
}

.breadcrumb ol {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    flex-wrap: wrap;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.breadcrumb li+li::before {
    content: '/';
    margin-right: 0.5rem;
    color: var(--border-color);
}

.breadcrumb a {
    color: var(--secondary-color);
    transition: color var(--transition);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb li[aria-current="page"] {
    color: var(--text-color);
    font-weight: 600;
}

/* 
     HERO DE CATEGORÍA
  */
.cat-hero {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem 0 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.cat-hero-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.cat-hero-text h1 {
    font-family: var(--font-primary);
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.cat-hero-text p {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 620px;
    margin-bottom: 1rem;
}

.cat-stats {
    display: flex;
    gap: 1.2rem;
    flex-wrap: wrap;
}

.cat-stats span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    font-family: var(--font-primary);
}

.cat-stats i {
    color: var(--secondary-color);
}

/* 
     FILTROS
  */
.filter-section {
    max-width: 1200px;
    margin: 0.5rem auto 1.5rem;
}

.filter-bar {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.45rem 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    background: #fff;
    color: var(--text-muted);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.filter-btn:hover {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

/* 
     GRID DE CALCULADORAS
  */
.calc-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 1.1rem;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

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

.calc-card {
    animation: fadeInUp 0.4s ease forwards;
}

.calc-card a {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1.4rem;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.calc-card a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity var(--transition);
}

.calc-card a:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
    border-color: rgba(37, 99, 235, 0.25);
}

.calc-card a:hover::before {
    opacity: 1;
}

.calc-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.9rem;
}

/* Icono de la calculadora */
.calc-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: #fff;
    flex-shrink: 0;
}

.bg-blue {
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
}

.bg-green {
    background: linear-gradient(135deg, #065f46, #059669);
}

.bg-amber {
    background: linear-gradient(135deg, #92400e, #d97706);
}

.bg-red {
    background: linear-gradient(135deg, #991b1b, #dc2626);
}

/* Badges de subcategoría */
.calc-badge {
    font-size: 0.72rem;
    font-weight: 700;
    font-family: var(--font-primary);
    padding: 0.25rem 0.6rem;
    border-radius: 50px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.badge-prestamos {
    background: #dbeafe;
    color: #1e40af;
}

.badge-inversion {
    background: #d1fae5;
    color: #065f46;
}

.badge-ahorro {
    background: #fef3c7;
    color: #92400e;
}

.badge-impuestos {
    background: #fee2e2;
    color: #991b1b;
}

/* Título y descripción */
.calc-card h2 {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.4rem;
    line-height: 1.3;
}

.calc-card p {
    font-size: 0.87rem;
    color: var(--text-muted);
    line-height: 1.5;
    flex: 1;
}

/* Meta inferior de la card */
.calc-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--border-color);
}

.calc-meta>span:first-child {
    font-size: 0.78rem;
    color: var(--accent-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.calc-cta {
    font-size: 0.82rem;
    font-weight: 700;
    font-family: var(--font-primary);
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 0.35rem;
    transition: gap var(--transition);
}

.calc-card a:hover .calc-cta {
    gap: 0.6rem;
}

/* 
     BLOQUE SEO
  */
.seo-block {
    max-width: 1200px;
    margin: 0 auto 2rem;
    padding: 2rem;
    background: var(--bg-soft);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.seo-block h2 {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.seo-block p {
    font-size: 0.93rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0.6rem;
}

.seo-block p:last-child {
    margin-bottom: 0;
}

/* 
     RESPONSIVE
  */
@media (max-width: 768px) {
    .cat-hero {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem 0 1rem;
    }

    .cat-hero-icon {
        width: 56px;
        height: 56px;
        font-size: 1.4rem;
    }

    .cat-hero-text h1 {
        font-size: 1.5rem;
    }

    .cat-stats {
        gap: 0.8rem;
    }

    .calc-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .filter-bar {
        gap: 0.4rem;
    }

    .filter-btn {
        font-size: 0.8rem;
        padding: 0.4rem 0.9rem;
    }
}

/* Estilos de categorias */
.bg-teal {
    background: linear-gradient(135deg, #134e4a, #0d9488);
}

.bg-purple {
    background: linear-gradient(135deg, #4c1d95, #7c3aed);
}

.bg-orange {
    background: linear-gradient(135deg, #7c2d12, #ea580c);
}

.badge-fechas {
    background: #ccfbf1;
    color: #134e4a;
}

.badge-edad {
    background: #ede9fe;
    color: #4c1d95;
}

.badge-conversion {
    background: #ffedd5;
    color: #7c2d12;
}

.badge-zonas {
    background: #dbeafe;
    color: #1e40af;
}

.badge-algebra {
    background: #dbeafe;
    color: #1e40af;
}

.badge-aritmetica {
    background: #d1fae5;
    color: #065f46;
}

.badge-estadistica {
    background: #fef3c7;
    color: #92400e;
}

.badge-geometria {
    background: #fee2e2;
    color: #991b1b;
}

.badge-conversion-peso {
    background: #dbeafe;
    color: #1e40af;
}

.badge-corporal {
    background: #d1fae5;
    color: #065f46;
}

.badge-nutricion {
    background: #fef3c7;
    color: #92400e;
}

.badge-coccion {
    background: #fee2e2;
    color: #991b1b;
}

.badge-medidas {
    background: #dbeafe;
    color: #1e40af;
}

.badge-nutricion-cocina {
    background: #d1fae5;
    color: #065f46;
}

.badge-recetas {
    background: #fef3c7;
    color: #92400e;
}

.badge-fisica {
    background: #dbeafe;
    color: #1e40af;
}

.badge-quimica {
    background: #d1fae5;
    color: #065f46;
}

.badge-conversion-ciencias {
    background: #fef3c7;
    color: #92400e;
}

.badge-almacenamiento {
    background: #dbeafe;
    color: #1e40af;
}

.badge-dev {
    background: #d1fae5;
    color: #065f46;
}

.badge-electricidad {
    background: #fef3c7;
    color: #92400e;
}

.badge-redes {
    background: #ede9fe;
    color: #4c1d95;
}

.badge-seguridad {
    background: #fee2e2;
    color: #991b1b;
}

.badge-estudio {
    background: #dbeafe;
    color: #1e40af;
}

.badge-financiacion {
    background: #d1fae5;
    color: #065f46;
}

.badge-notas {
    background: #fef3c7;
    color: #92400e;
}

.badge-universidad {
    background: #ede9fe;
    color: #4c1d95;
}

.badge-analisis {
    background: #dbeafe;
    color: #1e40af;
}

.badge-crypto {
    background: #d1fae5;
    color: #065f46;
}

.badge-viajes {
    background: #fef3c7;
    color: #92400e;
}

.badge-salud {
    background: #fce7f3;
    color: #9d174d;
}

.bg-pink {
    background: #fce7f3;
    color: #9d174d;
}

.badge-teoria {
    background: #ccfbf1;
    color: #134e4a;
}