/*
  Estilos para el sitio "Noticias de Energía" (site19)
  Paleta única con tonos púrpura y verde azulado, con acentos cálidos.
  Fuente Lora para títulos y Lato para el cuerpo del texto.
  Adaptado para dispositivos móviles y de escritorio.
*/

/* Variables de colores */
:root {
  --color-primary: #2a3d66; /* azul oscuro violáceo */
  --color-secondary: #48a9a6; /* verde azulado */
  --color-accent: #f0a202; /* mostaza cálida */
  --color-background: #f7f7f7; /* fondo claro */
  --color-text: #333333; /* texto principal */
  --color-muted: #666666; /* texto secundario */
  --color-footer-bg: #1f2d4a; /* fondo de pie de página */
}

/* Tipografías */
@import url("https://fonts.googleapis.com/css2?family=Lato:wght@300;400;700&family=Lora:wght@400;700&display=swap");

body {
  margin: 0;
  padding: 0;
  font-family: 'Lato', sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: 'Lora', serif;
  color: var(--color-primary);
  margin-top: 0;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Contenedor genérico */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Encabezado */
header {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 20px 0;
}

header .logo {
  font-family: 'Lora', serif;
  font-size: 1.5rem;
  font-weight: 700;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 15px;
}

nav li a {
  color: #ffffff;
  font-weight: 400;
  transition: color 0.3s;
}

nav li a:hover {
  color: var(--color-accent);
}

/* Sección hero */
.hero {
  background-color: var(--color-secondary);
  color: #ffffff;
  padding: 60px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: #ffffff;
}

.hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto 30px;
  color: #fefefe;
}

/* Sección de noticias */
.news-section {
  padding: 60px 0;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.news-item {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: 20px;
  transition: box-shadow 0.3s;
}

.news-item:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.news-item h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.news-item .date {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.news-item p {
  font-size: 1rem;
  margin-bottom: 15px;
}

.news-item a.button {
  display: inline-block;
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 8px 16px;
  border-radius: 4px;
  transition: background-color 0.3s;
}

.news-item a.button:hover {
  background-color: var(--color-accent);
}

/* Programas */
.program-section {
  background-color: var(--color-secondary);
  color: #ffffff;
  padding: 60px 0;
}

.program-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.program-card {
  background-color: #ffffff;
  color: var(--color-text);
  border-radius: 6px;
  padding: 20px;
  text-align: center;
  transition: transform 0.3s;
}

.program-card:hover {
  transform: translateY(-5px);
}

.program-card h3 {
  margin-top: 0;
  color: var(--color-primary);
}

.program-card p {
  margin: 10px 0 15px;
}

.program-card .price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-secondary);
}

.program-card a {
  display: inline-block;
  margin-top: 10px;
  color: #ffffff;
  background-color: var(--color-primary);
  padding: 8px 16px;
  border-radius: 4px;
  transition: background-color 0.3s;
}

.program-card a:hover {
  background-color: var(--color-accent);
}

/* Sección acerca de */
.about-section {
  padding: 60px 0;
  background-color: #ffffff;
}

.about-section p {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* Contacto */
.contact-section {
  padding: 60px 0;
  background-color: var(--color-secondary);
  color: #ffffff;
}

.contact-section .contact-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.contact-section form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 500px;
}

.contact-section input[type="text"],
.contact-section input[type="email"],
.contact-section textarea {
  padding: 10px;
  border: none;
  border-radius: 4px;
  font-family: 'Lato', sans-serif;
}

.contact-section textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-section label {
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.contact-section input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

.contact-section button {
  align-self: flex-start;
  padding: 10px 20px;
  background-color: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.contact-section button:hover {
  background-color: var(--color-accent);
}

/* Pie de página */
footer {
  background-color: var(--color-footer-bg);
  color: #ffffff;
  padding: 40px 0;
}

footer .footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
}

footer h4 {
  margin-top: 0;
  color: #ffffff;
}

footer p,
footer a {
  font-size: 0.9rem;
  color: #d4d4d4;
  line-height: 1.5;
}

footer a:hover {
  color: var(--color-accent);
}

footer .subscribe-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

footer .subscribe-form input[type="email"] {
  padding: 8px;
  border: none;
  border-radius: 4px;
  font-family: 'Lato', sans-serif;
}

footer .subscribe-form button {
  padding: 8px;
  background-color: var(--color-secondary);
  color: #ffffff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

footer .subscribe-form button:hover {
  background-color: var(--color-accent);
}

/* Responsividad */
@media (max-width: 768px) {
  header nav ul {
    flex-direction: column;
    gap: 10px;
  }
  .contact-section {
    text-align: center;
  }
  .contact-section form {
    margin: 0 auto;
  }
}