/* index.css MONOLÍTICO para el reto */
/* BUG #4: esta regla sobreescribe el color correcto del h1 definido más abajo */
h1 { color: purple; }

/* Footer Block */
.footer {
  background-color: var(--color-dark);
  color: var(--color-secondary);
  padding: var(--space-xl) 0 var(--space-lg);
}

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

.footer__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-lg);
}

.footer__brand {
  text-align: left;
}

.footer__logo {
  color: var(--color-accent);
  font-size: var(--font-size-xl);
  font-weight: bold;
  margin-bottom: var(--space-xs);
  display: block;
}

.footer__tagline {
  color: var(--color-secondary);
  opacity: 0.8;
  margin: 0;
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
  justify-content: flex-end;
}

.footer__link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-secondary);
  text-decoration: none;
  transition: var(--transition);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius);
}

.footer__link:hover {
  background-color: var(--color-primary);
  color: var(--color-secondary);
}

.footer__link i {
  font-size: 18px;
}

.footer__bottom {
  border-top: 1px solid rgba(196, 181, 253, 0.2);
  padding-top: var(--space-lg);
  text-align: center;
}

.footer__copyright {
  color: var(--color-secondary);
  opacity: 0.7;
  margin: 0;
  font-size: var(--font-size-small);
}

@media (max-width: 768px) {
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    text-align: center;
  }

  .footer__brand {
    text-align: center;
  }

  .footer__links {
    justify-content: center;
    flex-wrap: wrap;
  }
}

/* Header Block */
.header {
  position: relative;
  z-index: 100;
}

body {
  padding-top: 70px;
}

/* Main Block */
.main {
  flex: 1;
}

/* Hero Block */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-dark) 100%);
  color: var(--color-secondary);
  padding: var(--space-xxl) 0;
  min-height: 500px;
  display: flex;
  align-items: center;
}

.hero__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero__content {
  text-align: left;
}

.hero__title {
  font-size: var(--font-size-hero);
  margin-bottom: var(--space-md);
  color: var(--color-secondary);
}

.hero__subtitle {
  font-size: var(--font-size-large);
  margin-bottom: var(--space-xl);
  opacity: 0.9;
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__button {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius);
  font-weight: bold;
  text-decoration: none;
  transition: var(--transition);
}

.hero__button--primary {
  background-color: var(--color-secondary);
  color: var(--color-dark);
}

.hero__button--primary:hover {
  background-color: var(--color-accent);
  color: var(--color-dark);
}

.hero__button--secondary {
  background-color: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
}

.hero__button--secondary:hover {
  background-color: var(--color-secondary);
  color: var(--color-dark);
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__icon {
  font-size: 150px;
  color: var(--color-accent);
  opacity: 0.8;
}

/* About Block */
.about {
  padding: var(--space-xxl) 0;
  background-color: var(--color-secondary);
}

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

.about__header {
  text-align: center;
  margin-bottom: var(--space-xxl);
}

.about__title {
  color: var(--color-dark);
  margin-bottom: var(--space-md);
}

.about__description {
  font-size: var(--font-size-large);
  color: var(--color-dark);
  opacity: 0.8;
  max-width: 600px;
  margin: 0 auto;
}

.about__content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.about__card {
  background-color: var(--color-light);
  padding: var(--space-xl);
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.08);
  transition: var(--transition);
  border: 2px solid transparent;
}

.about__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.2);
  border-color: var(--color-primary);
}

.about__card-icon {
  font-size: 48px;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.about__card-title {
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.about__card-text {
  color: var(--color-dark);
  opacity: 0.8;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .hero__container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    text-align: center;
  }

  .hero__content {
    text-align: center;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__icon {
    font-size: 100px;
  }

  .about__content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

/* Team Block */
.team {
  padding: var(--space-xxl) 0;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-primary) 100%);
  color: var(--color-secondary);
}

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

.team__header {
  text-align: center;
  margin-bottom: var(--space-xxl);
}

.team__title {
  color: var(--color-secondary);
  margin-bottom: var(--space-md);
}

.team__description {
  font-size: var(--font-size-large);
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

.team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.team-card {
  background-color: var(--color-secondary);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  text-align: center;
  box-shadow: 0 8px 30px rgba(30, 27, 75, 0.2);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.team-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(124, 58, 237, 0.3);
}

.team-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transition: var(--transition);
}

.team-card:hover::before {
  transform: scaleX(1);
}

.team-card__image {
  margin-bottom: var(--space-lg);
  position: relative;
}

.team-card__photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
  border: 4px solid var(--color-primary);
  transition: var(--transition);
}

.team-card:hover .team-card__photo {
  transform: scale(1.1);
  border-color: var(--color-dark);
}

.team-card__content {
  color: var(--color-dark);
}

.team-card__name {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xs);
  color: var(--color-dark);
}

.team-card__role {
  font-size: var(--font-size-base);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.team-card__social {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  align-items: center;
}

.team-card__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  font-size: 18px;
  text-decoration: none;
  transition: var(--transition);
  color: var(--color-secondary);
}

.team-card__social-link--github {
  background-color: var(--color-dark);
}

.team-card__social-link--github:hover {
  background-color: var(--color-primary);
  transform: scale(1.1);
}

.team-card__social-link--linkedin {
  background-color: #0077b5;
}

.team-card__social-link--linkedin:hover {
  background-color: var(--color-primary);
  transform: scale(1.1);
}

@media (max-width: 1024px) {
  .team__grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .team__grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
  }

  .team-card { padding: var(--space-lg); }

  .team-card__photo {
    width: 100px;
    height: 100px;
  }
}

@media (max-width: 480px) {
  .team__grid { grid-template-columns: 1fr; }
}

/* Navigation Block */
.nav {
  background-color: var(--color-dark);
  box-shadow: 0 2px 10px rgba(30, 27, 75, 0.2);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.nav__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  position: relative;
}

.nav__brand {
  flex-shrink: 0;
}

.nav__logo {
  color: var(--color-accent);
  font-size: var(--font-size-xl);
  font-weight: bold;
  text-decoration: none;
}

.nav__checkbox {
  display: none;
  visibility: hidden;
  opacity: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
  transition: var(--transition);
}

.nav__item {
  margin: 0;
}

.nav__link {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius);
  transition: var(--transition);
  display: block;
}

.nav__link:hover {
  background-color: var(--color-primary);
  color: var(--color-secondary);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
  width: 30px;
  height: 30px;
  justify-content: center;
  align-items: center;
  z-index: 1001;
}

.nav__toggle-line {
  width: 25px;
  height: 3px;
  background-color: var(--color-secondary);
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transform-origin: center;
}

.nav__toggle-line--top    { transform: translateY(0); }
.nav__toggle-line--middle { opacity: 1; }
.nav__toggle-line--bottom { transform: translateY(0); }

.nav__checkbox:checked + .nav__toggle .nav__toggle-line--top {
  transform: translateY(7px) rotate(45deg);
}

.nav__checkbox:checked + .nav__toggle .nav__toggle-line--middle {
  opacity: 0;
  transform: scaleX(0);
}

.nav__checkbox:checked + .nav__toggle .nav__toggle-line--bottom {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .nav__list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-dark);
    flex-direction: column;
    padding: var(--space-sm) 0;
    box-shadow: 0 4px 20px rgba(30, 27, 75, 0.3);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  }

  .nav__checkbox:checked ~ .nav__list {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__item {
    width: 100%;
    transform: translateX(-100px);
    opacity: 0;
    transition: all 0.3s ease;
  }

  .nav__checkbox:checked ~ .nav__list .nav__item {
    transform: translateX(0);
    opacity: 1;
  }

  .nav__checkbox:checked ~ .nav__list .nav__item:nth-child(1) { transition-delay: 0.1s; }
  .nav__checkbox:checked ~ .nav__list .nav__item:nth-child(2) { transition-delay: 0.2s; }
  .nav__checkbox:checked ~ .nav__list .nav__item:nth-child(3) { transition-delay: 0.3s; }

  .nav__link {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    text-align: center;
    font-size: var(--font-size-large);
  }

  .nav__link:hover {
    background-color: var(--color-primary);
    transform: translateX(10px);
  }

  .nav__toggle { display: flex; }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .nav__list { gap: var(--space-md); }
}

/* CSS Variables - Paleta de colores */
:root {
  --color-primary: #7c3aed;
  --color-secondary: #f5f3ff;
  --color-dark: #1e1b4b;
  --color-light: #ede9fe;
  --color-accent: #c4b5fd;

  --font-family: 'Arial', sans-serif;
  --font-size-base: 16px;
  --font-size-small: 14px;
  --font-size-large: 18px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;
  --font-size-hero: 48px;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;

  --container-max-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-secondary);
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: bold;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

h1 { font-size: var(--font-size-hero); }
h2 { font-size: var(--font-size-xxl); }
h3 { font-size: var(--font-size-xl); }

p { margin-bottom: var(--space-sm); }

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

a:hover { opacity: 0.8; }

@media (max-width: 768px) {
  :root {
    --font-size-hero: 32px;
    --font-size-xxl: 24px;
    --font-size-xl: 20px;
  }
}