:root {
  --color-primario: #4e2a97;
  --color-secundario: #211d1d;
  --color-blanco: #ffffff;
  --color-gris: #cccccc;
  --color-gris-oscuro: #666666;
  --transition: all 0.3s ease;
  --bg-body: #0a0a0a;
  --bg-hero: radial-gradient(circle at top, #4e2a97 0%, #211d1d 80%);
  --bg-services: #1a1818;
  --bg-plans: #0f0f0f;
  --bg-contact: #1a1818;
  --bg-footer: #0a0a0a;
  --bg-card: #211d1d;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --border-card: rgba(255, 255, 255, 0.1);
  --shadow-card: 0 15px 40px rgba(78, 42, 151, 0.4);
}

body.light-mode {
  --bg-body: #f8f9fa;
  --bg-hero: linear-gradient(135deg, rgba(78, 42, 151, 0.08) 0%, #ffffff 60%);
  --bg-services: #ffffff;
  --bg-plans: #f8f9fa;
  --bg-contact: #ffffff;
  --bg-footer: #211d1d;
  --bg-card: #ffffff;
  --text-primary: #211d1d;
  --text-secondary: #666666;
  --border-card: #e0e0e0;
  --shadow-card: 0 10px 30px rgba(78, 42, 151, 0.15);
}

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

body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg-body);
  color: var(--text-primary);
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  scroll-behavior: smooth;
}

.navbar-quantix {
  background-color: rgba(33, 29, 29, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  transition: var(--transition);
  border-bottom: 1px solid rgba(78, 42, 151, 0.3);
}

body.light-mode .navbar-quantix {
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(78, 42, 151, 0.15);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.navbar-quantix.scrolled {
  padding: 0.5rem 0;
  box-shadow: 0 2px 20px rgba(78, 42, 151, 0.3);
}

body.light-mode .navbar-quantix.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar-brand img {
  filter: brightness(0) invert(1);
  transition: var(--transition);
}

body.light-mode .navbar-brand img {
  filter: none;
}

.nav-link {
  color: var(--color-blanco) !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: var(--transition);
  position: relative;
}

body.light-mode .nav-link {
  color: var(--color-secundario) !important;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-primario);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 80%;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primario) !important;
}

.navbar-toggler {
  border: none;
  padding: 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

body.light-mode .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2833, 29, 29, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

#theme-toggle {
  border: 1px solid rgba(255, 255, 255, 0.3);
  background-color: transparent;
  color: var(--color-blanco);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

#theme-toggle:hover {
  background-color: var(--color-primario);
  border-color: var(--color-primario);
  color: white;
  transform: rotate(15deg);
}

body.light-mode #theme-toggle {
  border-color: var(--color-primario);
  color: var(--color-primario);
  background-color: transparent;
}

body.light-mode #theme-toggle:hover {
  background-color: var(--color-primario);
  color: white;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-hero);
  padding-top: 80px;
}

.hero .content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 2rem;
}

.hero-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.35;
  pointer-events: none;
}

@media (max-width: 768px) {
  .hero-video {
    opacity: 0.25;
  }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  line-height: 1.2;
  text-shadow: 0 0 30px rgba(78, 42, 151, 0.5);
}

body.light-mode .hero h1 {
  text-shadow: none;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.3rem);
  line-height: 1.6;
  max-width: 700px;
  margin: 0 auto;
}

.glow {
  position: absolute;
  width: 300px;
  height: 300px;
  background: var(--color-primario);
  filter: blur(150px);
  opacity: 0.4;
  border-radius: 50%;
  animation: moveGlow 10s infinite alternate ease-in-out;
  z-index: 1;
}

body.light-mode .glow {
  opacity: 0.15;
}

@keyframes moveGlow {
  0% {
    transform: translate(-100px, -100px);
  }
  100% {
    transform: translate(100px, 100px);
  }
}

.services {
  padding: 100px 20px;
  text-align: center;
  background-color: var(--bg-services);
  transition: background-color 0.3s ease;
}

.services h2 {
  font-weight: 700;
  color: var(--color-primario);
  margin-bottom: 3rem;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.icon-wrapper {
  width: 80px;
  height: 80px;
  margin: 0 auto;
  background: linear-gradient(135deg, var(--color-primario), #7b3cc7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.icon-wrapper i {
  font-size: 2rem;
  color: white;
}

.service-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 20px;
  padding: 2.5rem 1.5rem;
  transition: all 0.3s ease;
  height: 100%;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-primario);
}

.service-card:hover .icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

.service-card h5 {
  color: var(--color-primario);
  font-weight: 700;
  margin: 1.5rem 0 1rem;
  font-size: 1.3rem;
}

.service-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.plans {
  padding: 100px 20px;
  background-color: var(--bg-plans);
  transition: background-color 0.3s ease;
}

.plans h2 {
  font-weight: 700;
  color: var(--color-primario);
  margin-bottom: 1rem;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  text-align: center;
}

.plans > .container > p {
  color: var(--text-secondary);
}

body:not(.light-mode) .plans > .container > p {
  color: var(--color-blanco) !important;
}

.plan-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 20px;
  padding: 2.5rem;
  transition: all 0.3s ease;
  height: 100%;
  position: relative;
}

.plan-card.featured {
  border: 2px solid var(--color-primario);
  transform: scale(1.05);
  box-shadow: var(--shadow-card);
}

.badge-featured {
  position: absolute;
  top: -15px;
  right: 30px;
  background: linear-gradient(135deg, var(--color-primario), #7b3cc7);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9rem;
}

.plan-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-card);
}

.plan-card.featured:hover {
  transform: scale(1.08) translateY(-10px);
}

.plan-header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-card);
}

.plan-header h4 {
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  color: var(--color-primario);
}

.price .currency {
  font-size: 1.5rem;
  font-weight: 600;
}

.price .amount {
  font-size: 3rem;
  font-weight: 800;
  margin: 0 0.5rem;
}

.price .period {
  font-size: 1rem;
  color: var(--text-secondary);
}

.plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
}

.plan-features li {
  padding: 0.75rem 0;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.plan-features i {
  color: var(--color-primario);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.btn-plan {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--color-primario), #7b3cc7);
  color: white;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: var(--transition);
  cursor: pointer;
}

.btn-plan:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(78, 42, 151, 0.5);
}

.contact {
  padding: 100px 20px;
  background-color: var(--bg-contact);
  transition: background-color 0.3s ease;
}

.contact h2 {
  font-weight: 700;
  color: var(--color-primario);
  margin-bottom: 1rem;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  text-align: center;
}

.contact > .container > p {
  color: var(--text-secondary);
  text-align: center;
}

.contact-form {
  background-color: var(--bg-card);
  padding: 2.5rem;
  border-radius: 20px;
  border: 1px solid var(--border-card);
  transition: all 0.3s ease;
}

.form-label {
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-control,
.form-select {
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: 10px;
  transition: var(--transition);
}

body.light-mode .form-control,
body.light-mode .form-select {
  background-color: #f8f9fa;
  border-color: #ddd;
}

.form-control:focus,
.form-select:focus {
  background-color: var(--bg-card);
  border-color: var(--color-primario);
  color: var(--text-primary);
  box-shadow: 0 0 0 0.25rem rgba(78, 42, 151, 0.25);
  outline: none;
}

body.light-mode .form-control:focus,
body.light-mode .form-select:focus {
  background-color: #f8f9fa;
}

.form-control::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.form-select option {
  background-color: var(--bg-card);
  color: var(--text-primary);
}

body.light-mode .form-select option {
  background-color: white;
  color: var(--color-secundario);
}

.btn-contact {
  padding: 1rem 3rem;
  background: linear-gradient(135deg, var(--color-primario), #7b3cc7);
  color: white;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: var(--transition);
  cursor: pointer;
}

.btn-contact:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(78, 42, 151, 0.5);
}

.contact-info {
  margin-top: 4rem;
}

.contact-item {
  padding: 1.5rem;
  background-color: var(--bg-card);
  border-radius: 15px;
  border: 1px solid var(--border-card);
  transition: var(--transition);
}

.contact-item:hover {
  transform: translateY(-5px);
  border-color: var(--color-primario);
  box-shadow: var(--shadow-card);
}

.contact-item i {
  font-size: 2rem;
  color: var(--color-primario);
  margin-bottom: 1rem;
}

.contact-item h6 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.contact-item p {
  color: var(--text-secondary);
  margin: 0;
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.social-icons a {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 50%;
  color: var(--color-primario);
  font-size: 1.5rem;
  transition: var(--transition);
  text-decoration: none;
}

.social-icons a:hover {
  background: linear-gradient(135deg, var(--color-primario), #7b3cc7);
  color: white;
  transform: translateY(-5px) rotate(5deg);
  border-color: var(--color-primario);
}

footer {
  text-align: center;
  padding: 2rem 0;
  background-color: var(--bg-footer);
  color: var(--text-secondary);
  font-size: 0.95rem;
  border-top: 1px solid var(--border-card);
  transition: background-color 0.3s ease;
}

[data-animate] {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease-out;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 992px) {
  .navbar-quantix {
    padding: 0.75rem 0;
  }

  .plan-card.featured {
    transform: scale(1);
    margin-bottom: 2rem;
  }

  .plan-card.featured:hover {
    transform: translateY(-10px);
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: 100px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .services,
  .plans,
  .contact {
    padding: 60px 15px;
  }

  .contact-form {
    padding: 1.5rem;
  }

  .services h2,
  .plans h2,
  .contact h2 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
  }

  .icon-wrapper {
    width: 60px;
    height: 60px;
  }

  .icon-wrapper i {
    font-size: 1.5rem;
  }

  #theme-toggle {
    width: 38px;
    height: 38px;
  }

  .price .amount {
    font-size: 2.5rem;
  }
}