/* ---- Reset y Base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Paleta de colores */
  --color-primary: #0d9488;
  --color-primary-light: #14b8a6;
  --color-primary-dark: #0f766e;
  --color-accent: #2563eb;
  --color-accent-light: #3b82f6;
  --color-urgent: #ef4444;
  --color-coverage: #16a34a;
  --color-coverage-dark: #15803d;
  
  /* Escala de grises */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Tipografía */
  --font-sans: 'Poppins', system-ui, -apple-system, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  /* Espaciado */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  
  /* Sombras modernas */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Bordes redondeados */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Transiciones */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Layout */
  --header-medium-height: 2.5rem;
  --header-height: 3.5rem;
  --max-width: 1280px;
  --container-padding: 1rem;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--gray-100);
  color: var(--gray-900);
  line-height: 1.6;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-700);
  transition: box-shadow var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.header__logo {
  height: 1.75rem;
  width: auto;
  object-fit: contain;
}

.header__menu-desktop {
  display: flex;
  align-items: center;
}

.header__center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 10px;
}

.header__right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header__link {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.025em;
  position: relative;
  padding: var(--space-1) 0;
  transition: color var(--transition-fast);
}

.header__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.header__link:hover {
  color: var(--color-primary-dark);
}

.header__link:hover::after {
  width: 100%;
}

.header__social {
  display: none;
  align-items: center;
}

.header__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-lg);
  color: #ec4899;
  transition: all var(--transition-fast);
}

.header__social-link:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
}

.header__social-link svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* Botón hamburguesa */
.header__menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  color: var(--color-primary);
  transition: all var(--transition-fast);
  margin-right: var(--space-3);
}

.header__menu-toggle:hover {
  background: var(--color-primary);
  color: white;
}

.header__menu-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ============================================
   VISTA SECCIÓN / CATEGORÍA
   ============================================ */

/* ---- Hero Banner ---- */
.section-hero {
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  color: white;
}

.section-hero__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--container-padding);
}

.section-hero__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.section-hero__content {
  flex: 1;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: start;
  width: 100%;
  margin-bottom: var(--space-4);
}

nav .breadcrumb__list {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-1);
  list-style: none;
}

nav li {
  margin-top: var(--space-6);
  display: flex;
  align-items: center;
}

.breadcrumb__link {
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: #bfdbfe;
  transition: color var(--transition-fast);
}

.breadcrumb__link:hover {
  color: white;
}

.breadcrumb__link svg {
  width: 1rem;
  height: 1rem;
  margin-right: var(--space-1);
}

.breadcrumb__separator {
  width: 1.5rem;
  height: 1.5rem;
  color: #93c5fd;
}

.breadcrumb__current {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: white;
  margin-left: var(--space-1);
}

/* Título y descripción */
.section-hero__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.section-hero__desc {
  font-size: var(--font-size-lg);
  color: #bfdbfe;
  max-width: 42rem;
  line-height: 1.6;
}

/* Stats card */
.section-hero__stats {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  align-self: flex-start;
}

.section-hero__stats-icon {
  width: 2rem;
  height: 2rem;
  color: #bfdbfe;
}

.section-hero__stats-number {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  line-height: 1;
}

.section-hero__stats-label {
  font-size: var(--font-size-sm);
  color: #bfdbfe;
}

/* ============================================
   SIDEBAR / DRAWER (Mobile + Desktop)
   ============================================ */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  background: white;
  z-index: 50;
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar.active {
  transform: translateX(0);
}

.sidebar__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 45;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.sidebar__overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Header del sidebar */
.sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--gray-100);
  position: sticky;
  top: 0;
  background: white;
  z-index: 2;
}

.sidebar__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--gray-900);
}

.sidebar__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-lg);
  color: var(--gray-500);
  transition: all var(--transition-fast);
}

.sidebar__close:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

.sidebar__close svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* Navegación del sidebar */
.sidebar__nav {
  padding: var(--space-4) var(--space-6);
  flex: 1;
}

.sidebar__section {
  margin-bottom: var(--space-4);
}

.sidebar__section-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-400);
  margin-bottom: var(--space-3);
  padding-left: var(--space-3);
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--gray-700);
  transition: all var(--transition-fast);
  margin-bottom: var(--space-1);
}

.sidebar__link:hover {
  background: var(--gray-50);
  color: var(--color-primary);
  padding-left: var(--space-2);
}

.sidebar__link-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.sidebar__link:hover .sidebar__link-icon {
  color: var(--color-primary);
}

/* Footer del sidebar */
.sidebar__footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.sidebar__social {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.sidebar__social-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--gray-600);
}

.sidebar__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-lg);
  color: #ec4899;
  background: white;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.sidebar__social-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.sidebar__social-link svg {
  width: 1.25rem;
  height: 1.25rem;
}

.sidebar__info {
  font-size: var(--font-size-xs);
  color: var(--gray-400);
  line-height: 1.5;
}

/* ============================================
   GRID DE ARTÍCULOS
   ============================================ */

.section-main {
  flex: 1 0 auto;
}

.section-main__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--container-padding);
}

.articles-grid {
  display: grid;
  gap: var(--space-6);
}

/* ---- Card Destacada ---- */
.card-featured {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-slow);
}

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

.card-featured__inner {
  display: flex;
  flex-direction: column;
}

.card-featured__media {
  position: relative;
  overflow: hidden;
  height: 16rem;
}

.card-featured__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card-featured:hover .card-featured__media img {
  transform: scale(1.05);
}

.card-featured__badge {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 700;
  border-radius: 9999px;
}

.card-featured__content {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-featured__tag {
  display: inline-block;
  align-self: flex-start;
  padding: var(--space-1) var(--space-3);
  background: #dbeafe;
  color: #1e40af;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: 9999px;
  margin-bottom: var(--space-4);
  text-transform: uppercase;
}

.card-featured__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
  line-height: 1.3;
  transition: color var(--transition-fast);
}

.card-featured:hover .card-featured__title {
  color: var(--color-accent);
}

.card-featured__excerpt {
  color: var(--gray-600);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}

.card-featured__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--gray-500);
  font-size: var(--font-size-sm);
}

.card-featured__meta svg {
  width: 1rem;
  height: 1rem;
}

/* ---- Card Normal ---- */
.card-article {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-slow);
}

.card-article:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-article__media {
  position: relative;
  overflow: hidden;
  height: 12rem;
}

.card-article__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card-article:hover .card-article__media img {
  transform: scale(1.05);
}

.card-article__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.2), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card-article:hover .card-article__overlay {
  opacity: 1;
}

.card-article__content {
  padding: var(--space-5);
}

.card-article__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-3);
  gap: var(--space-2);
}

.card-article__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--gray-100);
  color: var(--gray-700);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: 9999px;
  flex-shrink: 0;
}

.card-article__date {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  flex-shrink: 0;
}

.card-article__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.card-article:hover .card-article__title {
  color: var(--color-accent);
}

.card-article__excerpt {
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.card-article__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-article__views {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

.card-article__views svg {
  width: 1rem;
  height: 1rem;
}

.card-article__readmore {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.card-article:hover .card-article__readmore {
  color: #1e40af;
}

/* ============================================
   ESTADO VACÍO
   ============================================ */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-4);
}

.empty-state__icon {
  width: 6rem;
  height: 6rem;
  color: var(--gray-300);
  margin: 0 auto var(--space-6);
}

.empty-state__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: var(--space-3);
}

.empty-state__text {
  color: var(--gray-600);
  margin-bottom: var(--space-8);
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
}

.empty-state__button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  color: white;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.empty-state__button:hover {
  background: #1d4ed8;
}

.empty-state__button svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--gray-900);
  color: white;
  margin-top: auto;
}

.footer__container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--container-padding);
}

.footer__grid {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__brand-logo img:first-child {
  width: 3rem;
  height: 3rem;
}

.footer__brand-logo img:last-child {
  height: 2rem;
}

.footer__email {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--gray-400);
  margin-bottom: var(--space-3);
  transition: color var(--transition-fast);
}

.footer__email:hover {
  color: white;
}

.footer__email svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-accent-light);
  flex-shrink: 0;
}

.footer__description {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
  max-width: 280px;
}

.footer__section-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-4);
  text-align: center;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-4);
  list-style: none;
}

.footer__links a {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: white;
}

.footer__newsletter {
  text-align: center;
}

.footer__newsletter-text {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

.footer__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--gray-800);
  border: 1px solid var(--gray-700);
  border-radius: var(--radius-lg);
  color: white;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.footer__input::placeholder {
  color: var(--gray-500);
}

.footer__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.2);
}

.footer__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-accent);
  color: white;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.footer__button:hover {
  background: var(--color-accent-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgb(37 99 235 / 0.3);
}

.footer__button svg {
  width: 1.25rem;
  height: 1.25rem;
}

.footer__bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.footer__copyright {
  color: var(--gray-500);
  font-size: var(--font-size-sm);
}

.footer__legal {
  display: flex;
  gap: var(--space-6);
}

.footer__legal a {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: white;
}

/* ============================================
   RESPONSIVE SECCIÓN
   ============================================ */
@media (min-width: 640px) {
  nav li {
  margin-top: var(--space-4);
}

  .header__menu-desktop {
    display: none; 
  }
  
  .header__social {
    display: flex;
  }
  
  .header__mobile-toggle {
    display: none;
  }

  .section-hero__container {
    padding: var(--space-12) var(--container-padding);
  }

  .section-hero__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .section-hero__title {
    font-size: var(--font-size-4xl);
  }

  .section-hero__stats {
    padding: var(--space-6);
    align-self: center;
  }

  .footer__brand {
    align-items: flex-start;
    text-align: left;
  }
  
  .footer__section-title {
    text-align: left;
  }
  
  .footer__links {
    justify-content: flex-start;
  }
  
  .footer__newsletter {
    text-align: left;
  }
  
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-featured {
    grid-column: span 2;
  }

  .card-featured__inner {
    flex-direction: row;
  }

  .card-featured__media {
    width: 66.666%;
    height: auto;
    min-height: 24rem;
  }

  .card-featured__content {
    width: 33.333%;
    padding: var(--space-8);
  }

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

@media (min-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .card-featured {
    grid-column: span 3;
  }

  .card-featured__title {
    font-size: var(--font-size-3xl);
  }
}

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

.hidden {
  display: none !important;
}