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

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  color: #fafafa;
}

/* ===== CABECEIRA ===== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #171717;
  padding: 15px 40px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 150px;
  height: 80px;
  background-color: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.navbar > ul {
  list-style: none;
  display: flex;
  gap: 10px;
}

.navbar > ul > li {
  position: relative;
}

.navbar > ul > li > a {
  display: block;
  padding: 12px 15px;
  color: #fafafa;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: color 0.3s;
}

.navbar > ul > li > a:hover,
.navbar > ul > li > a.active {
  color: #0cc0df;
}

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

.dropdown-toggle {
  background: none;
  border: none;
  color: #fafafa;
  font-size: 12px;
  cursor: pointer;
  padding: 0 12px;
  transition: transform 0.3s ease;
}

.dropdown-content {
  list-style: none;
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #171717;
  min-width: 200px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
  border-radius: 4px;
  overflow: hidden;
}

.dropdown-content li a {
  display: block;
  padding: 12px 20px;
  white-space: nowrap;
  color: #fafafa;
  text-decoration: none;
}

.dropdown-content li a:hover {
  background-color: #232323;
}

@media (min-width: 769px) {
  .dropdown:hover .dropdown-content {
    display: block;
  }

  .dropdown-toggle {
    pointer-events: none;
  }

  .dropdown:hover .dropdown-toggle {
    transform: rotate(180deg);
  }

  .header {
    padding-right: 220px;
  }
}

/* ===== BANNER PRINCIPAL ===== */
.hero {
  background-image: 
    linear-gradient(135deg, rgba(12, 192, 223, 0.75), rgba(10, 146, 168, 0.75)),
    url('imaxes/foto_inicio.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: #fafafa;
  padding: 100px 40px;
  text-align: center;
  position: relative;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  background-color: #171717;
  color: #0cc0df;
  padding: 12px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s, transform 0.2s;
}

.btn:hover {
  background-color: #000000;
  transform: translateY(-2px);
}

/* ===== SECCIÓN TARXETAS ===== */
.content {
  display: flex;
  gap: 30px;
  padding: 60px 40px;
  flex-wrap: wrap;
  justify-content: center;
}

.card {
  background-color: #171717;
  padding: 30px;
  border-radius: 10px;
  max-width: 320px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.card h3 {
  color: #fafafa;
  margin-bottom: 15px;
}

.card a {
  display: inline-block;
  margin-top: 15px;
  color: #0cc0df;
  font-weight: bold;
  text-decoration: none;
  transition: color 0.2s;
}

.card a:hover {
  color: #fafafa;
}

/* ===== INDICADOR DE SCROLL (frecha animada) ===== */
.scroll-indicator {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #ffffff;
  padding: 10px 0 40px;
}

.arrow-down {
  width: 22px;
  height: 22px;
  border-right: 4px solid #0cc0df;
  border-bottom: 4px solid #0cc0df;
  transform: rotate(45deg);
  animation: bounceDown 1.8s infinite;
}

@keyframes bounceDown {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0) rotate(45deg);
    opacity: 1;
  }
  40% {
    transform: translateY(14px) rotate(45deg);
    opacity: 0.6;
  }
  60% {
    transform: translateY(7px) rotate(45deg);
    opacity: 0.85;
  }
}

/* ===== SECCIÓN VÍDEO ===== */
.video-section {
  background-color: #000000;
  color: #fafafa;
  padding: 80px 40px;
  text-align: center;
}

.video-section h2 {
  font-size: 32px;
  margin-bottom: 40px;
  color: #fafafa;
}

.video-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-bottom: 50.6%; /* proporción 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(12, 192, 223, 0.25);
}

.video-wrapper video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background-color: #171717;
}

/* ===== FOOTER ===== */
.footer {
  background-color: #222;
  color: #fafafa;
  text-align: center;
  padding: 30px;
  font-size: 14px;
}

/* ===== SELECTOR DE IDIOMA ===== */
.lang-dropdown {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1100;
  font-family: inherit;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 25px;
  border: none;
  background: #ffffff;
  color: #2c3e50;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.lang-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.lang-btn .arrow {
  transition: transform 0.3s ease;
}

.lang-btn.open .arrow {
  transform: rotate(180deg);
}

.lang-menu {
  list-style: none;
  margin: 0;
  padding: 8px 0;
  position: absolute;
  top: 110%;
  right: 0;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.25s ease;
}

.lang-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-menu li {
  padding: 10px 18px;
  cursor: pointer;
  color: #2c3e50;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s ease;
}

.lang-menu li:hover {
  background: #f0f4f8;
}

.default-tag {
  font-size: 0.75rem;
  color: #999;
  font-style: italic;
}

/* ===== ACCESIBILIDADE: FOCO VISIBLE PARA TECLADO ===== */
.lang-btn:focus-visible,
.dropdown-toggle:focus-visible,
.menu-toggle:focus-visible,
.navbar a:focus-visible,
.lang-menu li:focus-visible {
  outline: 2px solid #0cc0df;
  outline-offset: 2px;
}

/* ===== BOTÓN HAMBURGUESA (móbil) ===== */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: #fafafa;
  border-radius: 2px;
  transition: 0.3s ease;
}

.menu-toggle.activo span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle.activo span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.activo span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ===== RESPONSIVE: MÓBIL (≤768px) ===== */
@media (max-width: 768px) {
  .header {
    flex-wrap: wrap;
    position: relative;
    padding: 15px 20px;
    justify-content: center;
  }

  .logo {
    width: 100px;
    height: 60px;
  }

  .menu-toggle {
    display: flex;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
  }

  .navbar {
    display: none;
    width: 100%;
    background-color: #171717;
    position: absolute;
    top: 100%;
    left: 0;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    z-index: 1000;
  }

  .navbar.abierto {
    display: block;
  }

  .navbar > ul {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }

  .navbar > ul > li > a {
    padding: 15px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .dropdown {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
  }

  .dropdown > a {
    flex: 1;
    border-bottom: none;
  }

  .dropdown-toggle {
    padding: 15px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-size: 14px;
  }

  .dropdown-content {
    position: static;
    box-shadow: none;
    border-radius: 0;
    padding-left: 15px;
    background-color: #222;
    display: none;
  }

  .dropdown.activo .dropdown-content {
    display: block;
  }

  .dropdown.activo .dropdown-toggle {
    transform: rotate(180deg);
  }

  .lang-dropdown {
    top: 15px;
    right: 15px;
  }

  .lang-btn {
    padding: 8px 12px;
    font-size: 0.85rem;
  }

  .hero {
    padding: 60px 20px;
    background-attachment: scroll;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero p {
    font-size: 16px;
  }

  .content {
    padding: 40px 20px;
    gap: 20px;
  }

  .card {
    max-width: 100%;
  }

  .scroll-indicator {
    padding: 5px 0 25px;
  }

  .arrow-down {
    width: 18px;
    height: 18px;
    border-right-width: 3px;
    border-bottom-width: 3px;
  }

  .video-section {
    padding: 50px 20px;
  }

  .video-section h2 {
    font-size: 24px;
    margin-bottom: 25px;
  }
}