/*
 * NotaClara CSS stylesheet
 *
 * Esta hoja de estilos proporciona un diseño limpio y ordenado para la
 * landing page de NotaClara. Se basa en una paleta de colores sobrios
 * (azules y grises) con acentos suaves y está optimizada para
 * dispositivos móviles y de escritorio. El código sigue un
 * enfoque modular: se utilizan utilidades genéricas (container,
 * section, etc.) y componentes específicos (pricing-card, hero,
 * header) para facilitar la extensión y el mantenimiento.
 */

/* Variables de color para la marca */
:root {
  --color-primary: #243c5a; /* tono azul oscuro para el texto principal */
  --color-secondary: #516f99; /* azul medio para acentos */
  --color-accent: #00a778; /* verde azulado para botones y enlaces */
  --color-background: #f6f8fb; /* gris muy claro para secciones alternas */
  --color-light: #ffffff; /* blanco para cajas y tarjetas */
  --color-border: #e2e6ed; /* gris claro para bordes */
}

/* Reseteo básico y tipografía */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--color-primary);
  background-color: var(--color-light);
  overflow-x: hidden;
}

img, svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Contenedor general para centrar y definir anchos */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Cabecera */
.header {
  background-color: var(--color-light);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

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

.logo svg {
  margin-right: 0.5rem;
}

.brand-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

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

.nav-link {
  margin-left: 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-secondary);
  position: relative;
}

.nav-link:hover::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
}

/* Secciones */
.section {
  padding: 4rem 0;
}

.section.alt {
  background-color: var(--color-background);
}

h1, h2, h3 {
  margin-bottom: 1rem;
  line-height: 1.3;
}

h1 {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
}

h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-primary);
}

p {
  margin-bottom: 1rem;
  color: var(--color-secondary);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-light) 40%, var(--color-background) 100%);
  text-align: center;
  padding: 6rem 0;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

.btn-primary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  background-color: var(--color-accent);
  color: #fff;
  font-weight: 600;
  margin-top: 1.5rem;
  transition: background-color 0.2s ease;
}

.btn-primary:hover {
  background-color: #008a61;
}

/* Features list */
.features {
  list-style: none;
  padding-left: 0;
}

.features li {
  margin-bottom: 0.8rem;
  padding-left: 1.4rem;
  position: relative;
  color: var(--color-secondary);
}

.features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* Steps list */
.steps {
  counter-reset: step;
}

.steps li {
  position: relative;
  margin-bottom: 1rem;
  padding-left: 2rem;
  color: var(--color-secondary);
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 600;
}

/* Pricing */
.pricing-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  margin-top: 2rem;
}

.pricing-card {
  background-color: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  width: 100%;
  max-width: 320px;
  text-align: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 1rem 0;
}

.pricing-card ul {
  list-style: none;
  padding-left: 0;
  margin-top: 1rem;
}

.pricing-card li {
  margin-bottom: 0.6rem;
  color: var(--color-secondary);
}

.small-text {
  font-size: 0.85rem;
  color: var(--color-secondary);
  margin-top: 1rem;
  text-align: center;
}

/* Form embed */
.form-embed {
  margin-top: 2rem;
  border: 1px solid var(--color-border);
  padding: 1rem;
  border-radius: 8px;
  background-color: var(--color-light);
}

/* Footer */
.footer {
  background-color: var(--color-light);
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-secondary);
}

.footer a {
  color: var(--color-secondary);
  margin: 0 0.3rem;
}

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

/* Responsividad */
@media (max-width: 768px) {
  .nav {
    display: none;
  }
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }
  .logo {
    margin-bottom: 1rem;
  }
  .pricing-grid {
    flex-direction: column;
    align-items: center;
  }
  .pricing-card {
    max-width: 100%;
  }
  h1 {
    font-size: 1.8rem;
  }
  h2 {
    font-size: 1.6rem;
  }
}