/* ==========================================================================
   POLiGEN - CSS Principal
   Mobile-first responsive design
   ========================================================================== */

:root {
    /* Colores principales */
    --color-primary: #0f6b63;
    --color-primary-dark: #0a4f48;
    --color-primary-light: #e8f4f3;
    --color-secondary: #2c3e50;

    /* Color accent - coral profesional para CTAs y elementos activos */
    --color-accent: #ff6b6b;
    --color-accent-dark: #ee5a52;
    --color-accent-light: #ffe5e5;

    /* Colores texto */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-muted: #999999;

    /* Colores fondo */
    --color-bg: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-bg-dark: #1a1a1a;

    /* Tipografía */
    --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-heading: "Georgia", "Times New Roman", serif;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Bordes */
    --border-radius: 8px;
    --border-radius-sm: 4px;

    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);

    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ==========================================================================
   Reset y base
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Tipografía
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-secondary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

strong, b {
    font-weight: 600;
}

/* ==========================================================================
   Header y navegación
   ========================================================================== */

.main-header {
    background-color: var(--color-bg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--color-primary);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img {
    display: block;
    height: 40px;
    width: auto;
}

.nav-menu {
    display: none;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    list-style: none;
}

.nav-menu li a {
    color: var(--color-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    display: block;
    transition: color var(--transition-fast);
}

.nav-menu li a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.nav-toggle {
    display: block;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-secondary);
    cursor: pointer;
    padding: 0.5rem;
    line-height: 1;
}

/* Menú móvil abierto */
.nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    box-shadow: var(--shadow-md);
    padding: 1rem;
    gap: 0;
    z-index: 999;
}

.nav-menu.active li {
    border-bottom: 1px solid #eee;
    padding: 0.5rem 0;
}

.nav-menu.active li:last-child {
    border-bottom: none;
}

/* ==========================================================================
   Main content
   ========================================================================== */

.main-content {
    min-height: calc(100vh - 300px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.main-footer {
    background-color: var(--color-bg-dark);
    color: #e0e0e0;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.footer-col h4 {
    color: #ffffff;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.footer-col p,
.footer-col a {
    color: #b0b0b0;
    font-size: 0.9rem;
}

.footer-col a:hover {
    color: var(--color-primary-light);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    max-width: 1200px;
    margin: var(--spacing-md) auto 0;
    padding: var(--spacing-md) 1rem 0;
    border-top: 1px solid #444;
    text-align: center;
    color: #999;
    font-size: 0.85rem;
}

/* ==========================================================================
   Componentes comunes
   ========================================================================== */

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.badge-vet { background-color: #e3f2fd; color: #1565c0; }
.badge-agro { background-color: #f1f8e9; color: #558b2f; }
.badge-genetica { background-color: #fce4ec; color: #c2185b; }
.badge-apicultura { background-color: #fff3e0; color: #ef6c00; }

/* Badge especial con color accent */
.badge-destacado,
.badge-nuevo,
.badge-urgente {
    background-color: var(--color-accent);
    color: #ffffff;
    font-weight: 600;
}

.badge-important {
    background-color: var(--color-accent-light);
    color: var(--color-accent-dark);
    border: 1px solid var(--color-accent);
}

/* Botones */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: #ffffff;
    text-decoration: none;
}

/* Botón CTA con color accent (llamadas a la acción) */
.btn-cta {
    background-color: var(--color-accent);
    color: #ffffff;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.btn-cta:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

/* Botón outline accent */
.btn-accent-outline {
    background-color: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-accent-outline:hover {
    background-color: var(--color-accent);
    color: #ffffff;
    text-decoration: none;
}

/* Cards */
.card {
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md);
    transition: box-shadow var(--transition-normal);
}

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

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

/* Grid de contenido */
.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

/* ==========================================================================
   Página enfermedad
   ========================================================================== */

.enfermedad-header {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: #ffffff;
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-lg);
}

.enfermedad-header h1 {
    color: #ffffff;
    margin-bottom: var(--spacing-xs);
}

.enfermedad-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.enfermedad-content {
    padding: var(--spacing-md) 0;
}

.enfermedad-content section {
    margin-bottom: var(--spacing-lg);
}

.enfermedad-content h2 {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-sm);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.enfermedad-sidebar {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
}

.cta-box {
    background: linear-gradient(135deg, var(--color-primary-light), #ffffff);
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    text-align: center;
    margin: var(--spacing-lg) 0;
}

.cta-box h3 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.cta-box p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

/* CTA box destacado con accent */
.cta-box-destacado {
    background: linear-gradient(135deg, var(--color-accent-light), #ffffff);
    border: 3px solid var(--color-accent);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    text-align: center;
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-md);
}

.cta-box-destacado h3 {
    color: var(--color-accent-dark);
}

/* ==========================================================================
   Página post (blog)
   ========================================================================== */

.post-header {
    background-color: var(--color-bg-light);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-md);
}

.post-header h1 {
    margin-bottom: var(--spacing-xs);
}

.post-meta {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

.post-content {
    padding: var(--spacing-md) 0;
    font-size: 1.05rem;
    line-height: 1.8;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
}

.post-content ul,
.post-content ol {
    margin-left: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

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

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
    overflow-x: auto;
    display: block;
}

.post-content th,
.post-content td {
    border: 1px solid #ddd;
    padding: 0.75rem;
    text-align: left;
}

.post-content th {
    background-color: var(--color-primary-light);
    font-weight: 600;
}

/* ==========================================================================
   Página hub
   ========================================================================== */

.hub-hero {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: #ffffff;
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.hub-hero h1 {
    color: #ffffff;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.hub-hero p {
    font-size: 1.2rem;
    opacity: 0.95;
}

.hub-sections {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.hub-section h2 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.hub-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.hub-item {
    background-color: var(--color-bg);
    border: 1px solid #e0e0e0;
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.hub-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.hub-item:hover h3 {
    color: var(--color-accent);
}

.hub-item h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.hub-item p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ==========================================================================
   Links especiales con accent
   ========================================================================== */

.link-accent {
    color: var(--color-accent);
    font-weight: 500;
}

.link-accent:hover {
    color: var(--color-accent-dark);
    text-decoration: underline;
}

/* Número de teléfono destacado */
a[href^="tel:"] {
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: none;
}

a[href^="tel:"]:hover {
    color: var(--color-accent-dark);
}

/* Email destacado */
a[href^="mailto:"] {
    color: var(--color-accent);
    font-weight: 500;
}

a[href^="mailto:"]:hover {
    color: var(--color-accent-dark);
}

/* ==========================================================================
   Utilidades
   ========================================================================== */

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }

.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;
}

/* ==========================================================================
   Responsive - Tablet (768px+)
   ========================================================================== */

@media (min-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }

    .nav-toggle {
        display: none;
    }

    .nav-menu {
        display: flex;
        flex-direction: row;
    }

    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .content-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hub-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .enfermedad-content {
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: var(--spacing-lg);
    }

    .enfermedad-main {
        grid-column: 1;
    }

    .enfermedad-sidebar {
        grid-column: 2;
        margin-top: 0;
    }
}

/* ==========================================================================
   Responsive - Desktop (1024px+)
   ========================================================================== */

@media (min-width: 1024px) {
    h1 { font-size: 3rem; }

    .footer-container {
        grid-template-columns: repeat(4, 1fr);
    }

    .content-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hub-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hub-hero h1 {
        font-size: 3rem;
    }

    .container {
        padding: 0 2rem;
    }
}

/* ==========================================================================
   Print
   ========================================================================== */

@media print {
    .main-header,
    .main-footer,
    .nav-toggle,
    .cta-box,
    .btn {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    h1, h2, h3 {
        page-break-after: avoid;
    }
}