/* ======================== 
   ======== NAVBAR ======== 
   ========================*/

/* Navbar Container */
nav {
  background-color: var(--secondary-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  box-shadow: var(--box-shadow);
}

/*--- Logo Block ---*/
.logo {
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo-navbar {
  max-width: 18rem;
  height: auto;
}

/*--- List Block ---*/
.nav__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg) 0;
  gap: var(--spacing-lg);
  position: fixed;
  top: -100%;
  left: 0;
  width: 100%;
  background-color: var(--surface-color);
  transition: top 0.3s ease-in-out;
  box-shadow: var(--box-shadow);
  z-index: var(--z-nav);
}

.nav__list.active {
  top: 0;
}

.nav__item {
  width: 100%;
  text-align: center;
}

.nav__link {
  position: relative;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

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

.nav__link:hover::after {
  width: 100%;
}

/*--- Hamburger Menu ---*/
.hamburger {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  position: relative;
  z-index: calc(var(--z-nav) + 10);
}

.hamburger__line {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px 0;
  background-color: var(--surface-color);
  transition: transform 0.3s ease-in-out;
}

.hamburger.active .hamburger__line {
  background-color: var(--secondary-color);
}

/*--- Hamburger Menu Animation ---*/
.hamburger.active .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}
.hamburger.active .hamburger__line:nth-child(2) {
  opacity: 0;
}
.hamburger.active .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ===========================
   FOOTER
   =========================== */

/* Estructura principal */
footer {
  color: var(--text-color);
  box-shadow: var(--box-shadow);
  line-height: 1.6;
  background-color: var(--secondary-color);
}

/* --- Sección de contacto --- */
.footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.footer__contact-block-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer__logo {
  max-width: 280px;
}

.footer__contact-block-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  color: var(--accent-color);
}

.footer__contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 55px;
  height: 55px;
  border: 2px solid var(--accent-color);
  border-radius: 50%;
  font-size: 2.3rem;
  transition: var(--transition);
}

.footer__contact-icon:hover {
  background-color: var(--accent-color);
  color: var(--secondary-color);
}

.footer__contact-text {
  flex: 1;
  max-width: fit-content;
}

.footer__contact-text h3 {
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
  letter-spacing: 0.5px;
}

/* --- Redes sociales --- */
.footer__rrss {
  padding: var(--spacing-sm) 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
}

.footer__rrss a {
  color: var(--surface-color);
  font-size: 2.3em;
  transition: transform 0.3s ease, color 0.3s ease;
}

.footer__rrss a:hover {
  transform: scale(1.2);
  color: var(--accent-color);
}

/* --- Información institucional --- */

/* Logos */
.footer__logos {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  justify-content: center;
  align-items: center;
  margin-top: var(--spacing-sm);
}

.footer__logos-PDP {
  max-height: 100px;
  width: auto;
  object-fit: contain;
}

.footer__logos-SSN {
  max-height: 80px;
  width: auto;
  object-fit: contain;
}


/* --- Copyright --- */
.footer__copyright {
  background-color: var(--primary-color);
  color: var(--surface-color);
  text-align: center;
  font-size: 1.2rem;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.footer__copyright a {
  color: var(--accent-color);
  text-decoration: none;
  transition: var(--transition);
}

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

/* ======================== 
   ======== CARDS ========= 
   ========================*/

/* --- SIMPLE CARDS --- */
.cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.card__container {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: var(--spacing-md);
  text-align: center;
  transition: var(--transition);
  -webkit-border-radius: var(--border-radius);
  -moz-border-radius: var(--border-radius);
  -ms-border-radius: var(--border-radius);
  -o-border-radius: var(--border-radius);
}

.card__media {
  font-size: 1.8rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.card__text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  color: var(--text-color);
  font-size: 0.95rem;
}

.card__container:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}


/* --- FLIP CARDS --- */

.products-grid {
  padding: 3rem 0;
  text-align: center;
}

.products-grid__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  justify-items: center;
}

.card-flip {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  justify-items: center;
  padding: var(--spacing-md) 0;
}

.card-flip__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--surface-color);
}
.card-flip__container {
  perspective: 1000px;
  width: 100%;
  max-width: 100%;
  height: 420px;
}

.card-flip__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

.card-flip__container:hover .card-flip__inner {
  transform: rotateY(180deg);
}

.card-flip__front,
.card-flip__back {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  backface-visibility: hidden;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: var(--transition);
}

/* ---------- LADO FRONTAL ---------- */
.card-flip__front {
  background: var(--primary-color);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--surface-color);
}


.card-flip__front span {
  font-family: var(--font-family-heading);
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
  position: relative;
  z-index: 2;
}

/* ---------- LADO POSTERIOR ---------- */
.card-flip__back {
  background-color: var(--accent-color);
  color: var(--primary-color);
  transform: rotateY(180deg);
  border: 2px solid var(--primary-color);
}

.card-flip__back p,
.card-flip__back a {
  font-size: 0.9rem;
  padding: var(--spacing-md);
  line-height: 1.4;
}


.card-flip__description {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  width: 100%;
  gap: var(--spacing-lg);
  text-align: center;
}

.card-flip__description p {
  text-align: justify;
  color: var(--text-color);
}
.card-flip__description a {
  font-weight: 800;
}

.card-flip__container:hover .card-flip__front {
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
  transform: scale(1.02);
}

.card-flip__extra {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card-flip__extra ul {
  padding: 0;
  list-style: none;
  width: 100%;
}

.card-flip__extra li {
  margin-bottom: 0.5rem;
  padding-left: 1.2rem;
}

.card-flip__extra a {
  width: 100%; /* mismo ancho que los beneficios */
  text-align: center;
  font-weight: bold;
}



/* ===========================
   BUTTON
   =========================== */

.btn {
  display: inline-block;
  padding: 0.9rem 1.3rem;
  font-weight: bold;
  font-size: 1.2rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  text-align: center;
  transition: var(--transition);

  background-color: var(--accent-color);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn:hover {
  background-color: var(--primary-color);
  color: var(--surface-color);
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.spacing-btn {
  margin-top: 4rem;
}

/* RESPONSIVE */
@media (min-width: 768px) {
  .hamburger {
    display: none;
  }

  .logo-navbar {
    max-width: 13rem;
    height: auto;
    margin-left: var(--spacing-xl);
  }

  .nav__list {
    position: static;
    flex-direction: row;
    justify-content: flex-end;
    align-items: center;
    top: auto;
    width: auto;
    background: none;
    box-shadow: none;
    padding: 0;
    margin-right: var(--spacing-xl);
  }

  .nav__item {
    width: auto;
  }

  .nav__link {
    color: var(--surface-color);
  }

  .nav a:hover {
    text-decoration: none;
  }

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

  /* ===========================
   FOOTER
   =========================== */
  .footer__contact {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
  }

  .footer__contact-block-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: 100%;
    justify-content: center;
  }

  .footer__contact-block-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }

  .footer__contact-block-row {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
  }

  .footer__contact-text {
    max-width: 220px;
  }

  .footer__logos {
    justify-content: flex-start;
    max-width: 300px;
    object-fit: contain;
    align-items: flex-start;
  }

  /* ===========================
   CARDS
   =========================== */
  .cards {
    display: grid;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
  }

  .cards--4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .cards--5 {
    grid-template-columns: repeat(3, 1fr);
    justify-items: center;
  }


  .card__container {
    padding: var(--spacing-lg);
    text-align: left;
  }

  .card__media {
    font-size: 2.2rem;
  }

  .card__text {
    font-size: 1.05rem;
  }

  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
  }

  .products-card {
    height: 260px;
    padding: var(--spacing-lg);
  }

  .products-card:hover .products-card__img {
    transform: scale(1.25);
  }

  .products-card__title {
    font-size: 1.2rem;
  }

  .products-grid__container {
    margin: var(--spacing-xl) 0;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .card-flip {
    grid-template-columns: 1fr;
    justify-content: center;
  }

  .card-flip__item {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    padding: var(--spacing-lg);
  }

  .card-flip__extra {
    grid-column: 2;
    grid-row: 1;
  }


  .card-flip__inner {
    width: 100%;
    height: 100%;
  }

  .card-flip__front span {
    font-size: 1.25rem;
  }

  .card-flip__back p,
  .card-flip__back a {
    font-size: calc(var(--font-size-md) * 1.3);
  }
}