:root {
  --azul-50:  #DDEBFE;
  --azul-100: #C4DDFD;
  --azul-200: #93C0FB;
  --azul-300: #62A3F9;
  --azul-400: #3186F7;
  --azul-500: #096BEC; /* principal */
  --azul-600: #0755BB;
  --azul-700: #053E8A;
  --azul-800: #032859;
  --azul-900: #021227;

  --blanco: #ffffff;
  --gris-claro: #f5f7fa;
  --gris-texto: #4a4a4a;
  --gris-borde: #e0e6ef;
  --negro: #0a0a0a;

  --radius-card: 0.75rem;
  --max-width: 1200px;
  --padding-section: 4rem 1rem;
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

body {
  font-family: var(--font-base);
  background-color: var(--gris-claro);
  color: var(--gris-texto);
}

/* Layout generales */

header {
  background-color: var(--azul-900);
  color: var(--blanco);
  border-bottom: 2px solid var(--azul-700);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-weight: 600;
  color: var(--blanco);
  text-decoration: none;
  font-size: 1rem;
}
.logo img {
  height: 40px;
  width: 40px;
  border-radius: 8px;
  background-color: var(--azul-700);
  object-fit: cover;
}

.header img{
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem;
  display: flex;
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

nav a {
  color: var(--blanco);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  padding: .5rem .75rem;
  border-radius: .5rem;
  line-height: 1;
  border: 1px solid transparent;
}

nav a:hover,
nav a.activo {
  background-color: var(--azul-700);
  border-color: var(--azul-500);
  box-shadow: 0 8px 24px rgb(9 107 236 / .4);
}

/* Hero / secciones principales */

.hero {
  background: radial-gradient(circle at 20% 20%, var(--azul-800) 0%, var(--azul-900) 60%);
  color: var(--blanco);
  padding: 4rem 1rem 5rem;
  text-align: center;
  border-bottom: 4px solid var(--azul-500);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 2rem;
}

.hero h1 {
  font-size: clamp(1.8rem, 1vw + 1.4rem, 2.2rem);
  line-height: 1.2;
  font-weight: 600;
  color: var(--blanco);
}

.hero p {
  font-size: 1rem;
  line-height: 1.5;
  max-width: 40rem;
  margin: 1rem auto 2rem;
  color: var(--azul-100);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .75rem;
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  font-size: .95rem;
  line-height: 1.2;
  padding: .8rem 1rem;
  border-radius: .6rem;
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primario {
  background-color: var(--azul-500);
  color: var(--blanco);
  box-shadow: 0 12px 32px rgb(9 107 236 / .5);
}
.btn-primario:hover {
  background-color: var(--azul-400);
}

.btn-secundario {
  background-color: transparent;
  color: var(--blanco);
  border-color: var(--azul-600);
}
.btn-secundario:hover {
  background-color: var(--azul-800);
}

/* Secciones genéricas */

section {
  padding: var(--padding-section);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

section h2 {
  font-size: 1.4rem;
  color: var(--azul-900);
  margin-bottom: .5rem;
  font-weight: 600;
}
section .subtitulo {
  font-size: .95rem;
  color: var(--gris-texto);
  max-width: 50rem;
  line-height: 1.5;
  margin-bottom: 2rem;
}

/* imagen de navegador */
.imagen-navegador img {
  width: 500px;   
  height: auto;   
  margin-top: 1rem; 
  border-radius: 8px; 
}

/* Cards */

.grid-cards {
  display: grid;
  gap: 1.5rem;

}

@media(min-width:768px){
  .grid-cards {
    grid-template-columns: repeat(3,1fr);
  }
}

.card {
  background-color: var(--blanco);
  border-radius: var(--radius-card);
  border: 1px solid var(--gris-borde);
  padding: 1.5rem;
  box-shadow: 0 16px 40px rgb(3 40 89 / .08);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--azul-800);
  margin-bottom: .5rem;
}

.card p {
  font-size: .9rem;
  line-height: 1.4;
  color: var(--gris-texto);
}

.card img {
  width: 250px;
  height: 150px;
  object-fit: contain;
  margin-bottom: 1rem;
}

.card .iconos {
    height: 5rem;
    width: 5rem;
    background-color: var(--primario);
    border-radius: 50%;
    justify-content: space-evenly;
    display: flex;
    align-items: center;
    fill: var(--azul-800);
}

/* Contacto */

.contacto-wrapper {
  display: grid;
  gap: 2rem;
}

@media(min-width:768px){
  .contacto-wrapper {
    grid-template-columns: 1fr 1fr;
  }
}

.form-card {
  background-color: var(--blanco);
  border-radius: var(--radius-card);
  border: 1px solid var(--gris-borde);
  padding: 1.5rem;
  box-shadow: 0 16px 40px rgb(3 40 89 / .08);
}

.form-card label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--azul-800);
  margin-bottom: .4rem;
}

.form-card input,
.form-card textarea {
  width: 100%;
  background-color: var(--azul-50);
  border: 1px solid var(--azul-200);
  border-radius: .5rem;
  padding: .7rem .8rem;
  font-size: .9rem;
  color: var(--azul-900);
  outline: none;
}

.form-card textarea {
  min-height: 120px;
  resize: vertical;
}

.form-card input:focus,
.form-card textarea:focus {
  border-color: var(--azul-500);
  box-shadow: 0 0 0 3px rgb(9 107 236 / .2);
}

.form-card form {
  display: flex;
  flex-direction: column;
  align-items: center; 
}

.form-card .campo {
  width: 100%;
  max-width: 450px;
  margin-bottom: 1rem;
}

.form-card input,
.form-card textarea {
  width: 100%; 
}

.info-contacto {
  font-size: .9rem;
  line-height: 1.5;
  color: var(--gris-texto);
}
.info-contacto h3 {
  font-size: 1rem;
  color: var(--azul-800);
  margin-bottom: .5rem;
}

/* Footer */

footer {
  background-color: var(--azul-900);
  color: var(--azul-100);
  border-top: 2px solid var(--azul-700);
  margin-top: 4rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
  font-size: .8rem;
  line-height: 1.5;
  text-align: center;
  color: var(--azul-100);
}

.footer-inner a {
  color: var(--azul-200);
  text-decoration: none;
}
.footer-inner a:hover {
  color: var(--azul-50);
  text-decoration: underline;
}