/* Estilos generales para el sitio web del Taller Popular de Matemáticas e IA */

:root {
  --color-primary: #6a75ca;    /* Lavanda */
  --color-secondary: #7ac7b9;  /* Verde menta */
  --color-accent: #b3cde0;     /* Azul pastel */
  --color-accent-light: #e2eef7; /* Azul muy claro para fondos */
  --color-text: #2d3748;       /* Gris oscuro para texto */
  --color-text-light: #4a5568; /* Gris medio para textos secundarios */
  --color-background: #f8f9fa; /* Fondo claro */
  --color-highlight: #8a9ef2;  /* Color para destacados */
  --font-main: 'Montserrat', sans-serif;
  --font-secondary: 'Roboto', sans-serif;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --transition-default: all 0.3s ease;
}

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

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Estilos del encabezado */
header {
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  padding: 20px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 80px;
  margin-right: 15px;
}

.logo h1 {
  font-size: 1.8rem;
  color: white;
  font-weight: 600;
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-left: 30px;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

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

/* Estilos del hero */
.hero {
  background: linear-gradient(rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.92)), url('https://qdjhsmqw.manus.space/images/math_pattern.png');
  background-size: cover;
  padding: 120px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.hero h2 {
  font-size: 2.8rem;
  margin-bottom: 25px;
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
  text-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.hero p {
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto 35px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.btn {
  display: inline-block;
  background-color: var(--color-primary);
  color: white;
  padding: 14px 32px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.5px;
  transition: var(--transition-default);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0;
  background-color: var(--color-secondary);
  transition: all 0.3s ease;
  z-index: -1;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: white;
}

.btn:hover::after {
  height: 100%;
}

/* Sección de cursos */
.courses {
  padding: 100px 0;
  background-color: var(--color-background);
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 2.2rem;
  color: var(--color-primary);
  margin-bottom: 18px;
  font-weight: 700;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 70px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 3px;
}

.section-title p {
  max-width: 700px;
  margin: 0 auto;
  color: var(--color-text-light);
  font-size: 1.1rem;
  line-height: 1.7;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 20px;
}

.course-card {
  background-color: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-default);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
}

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.course-image {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.course-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30%;
  background: linear-gradient(to top, rgba(0,0,0,0.5), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.course-card:hover .course-image::after {
  opacity: 1;
}

.course-content {
  padding: 28px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.course-content h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--color-primary);
  font-weight: 600;
  transition: var(--transition-default);
}

.course-card:hover .course-content h3 {
  color: var(--color-highlight);
}

.course-content p {
  margin-bottom: 20px;
  color: var(--color-text-light);
  line-height: 1.6;
  flex-grow: 1;
}

/* Sección Acerca de */
.about {
  padding: 80px 0;
  background-color: #f1f5f9;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-image {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-image img {
  width: 100%;
  height: auto;
  display: block;
}

.about-text h2 {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 15px;
}

/* Sección de matemáticas */
.math-section {
  padding: 80px 0;
  text-align: center;
}

.math-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.math-item {
  background-color: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.math-icon {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.math-item h3 {
  margin-bottom: 15px;
  color: var(--color-primary);
}

/* Sección de contacto */
.contact {
  padding: 100px 0;
  background-color: var(--color-accent-light);
  position: relative;
}

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

.contact h2 {
  font-size: 2.2rem;
  color: var(--color-primary);
  margin-bottom: 18px;
  font-weight: 700;
  text-align: center;
  position: relative;
  display: inline-block;
}

.contact h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 70px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 3px;
}

.contact p {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 40px;
  color: var(--color-text-light);
  font-size: 1.1rem;
  line-height: 1.7;
}

.contact-info {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 40px;
}

.contact-item {
  background-color: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: var(--transition-default);
  text-align: center;
  min-width: 250px;
}

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

.contact-icon-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--color-text);
  gap: 12px;
}

.contact-value {
  font-weight: 500;
  color: var(--color-primary);
  transition: var(--transition-default);
}

.contact-icon-link:hover .contact-value {
  color: var(--color-highlight);
}

.contact-cta {
  text-align: center;
  margin-top: 30px;
}

/* Footer */
footer {
  background-color: var(--color-primary);
  color: white;
  padding: 70px 0 30px;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-column h3 {
  font-size: 1.3rem;
  margin-bottom: 25px;
  position: relative;
  display: inline-block;
  font-weight: 600;
}

.footer-column h3::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--color-secondary);
  border-radius: 3px;
}

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

.footer-column ul li {
  margin-bottom: 15px;
}

.footer-column ul li a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: var(--transition-default);
  position: relative;
  padding-left: 15px;
}

.footer-column ul li a::before {
  content: '›';
  position: absolute;
  left: 0;
  top: 0;
  transition: var(--transition-default);
}

.footer-column ul li a:hover {
  color: white;
  padding-left: 20px;
}

.footer-column ul li a:hover::before {
  left: 5px;
}

.footer-column p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 15px;
  line-height: 1.7;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.7);
}

/* Estilos para fórmulas matemáticas */
.math-formula {
  background-color: rgba(255, 255, 255, 0.9);
  padding: 15px;
  border-radius: 8px;
  margin: 20px 0;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
  overflow-x: auto;
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
  }
  
  nav ul {
    margin-top: 20px;
  }
  
  nav ul li {
    margin-left: 15px;
    margin-right: 15px;
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .hero h2 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .logo h1 {
    font-size: 1.5rem;
  }
  
  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  nav ul li {
    margin: 5px 10px;
  }
  
  .hero {
    padding: 60px 0;
  }
  
  .hero h2 {
    font-size: 1.8rem;
  }
  
  .btn {
    padding: 10px 20px;
  }
}