/* ==========================================================================
   Variables y Modo Oscuro / Claro
   ========================================================================== */
:root {
  /* Paleta Clara */
  --bg-body: #f8fbfa;
  --bg-surface: #ffffff;
  --text-main: #2d3748;
  --text-muted: #4a5568;
  --color-primary: #38a169;
  /* Verde corporativo */
  --color-primary-dark: #2f855a;
  --color-secondary: #2b6cb0;
  /* Azul */
  --color-dark-blue: #1a202c;
  /* Para la tarjeta RedssApp */
  --border-color: #e2e8f0;

  /* Sombras y transiciones */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --transition-normal: all 0.3s ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Paleta Oscura */
    --bg-body: #111827;
    /* Gris muy oscuro */
    --bg-surface: #1f2937;
    /* Gris oscuro para tarjetas */
    --text-main: #f3f4f6;
    /* Texto claro */
    --text-muted: #9ca3af;
    --color-primary: #48bb78;
    /* Verde un poco más brillante para contraste */
    --color-primary-dark: #38a169;
    --color-secondary: #63b3ed;
    --color-dark-blue: #1f2937;
    /* Adaptación para que no sea negro sobre negro */
    --border-color: #374151;

    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
  }
}

/* ==========================================================================
   Reseteo Base y Tipografía
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  transition: var(--transition-normal);
  /* Patrón de fondo sutil inspirado en las imágenes */
  background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
  background-size: 40px 40px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Outfit', 'Inter', system-ui, sans-serif;
  color: var(--text-main);
  margin-bottom: 1rem;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Navegación (Navbar)
   ========================================================================== */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 5%;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  /* Glassmorphism */
  -webkit-backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

@media (prefers-color-scheme: dark) {
  .navbar {
    background-color: rgba(31, 41, 55, 0.8);
  }
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
}

.nav-brand img {
  height: auto;
  max-height: 60px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-main);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    text-align: center;

    /* Animación: Estado oculto */
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding: 0;
    border-bottom: none;
    transition: max-height 0.4s ease, opacity 0.4s ease, padding 0.4s ease;
  }

  .nav-links.show {
    /* Animación: Estado visible */
    max-height: 300px;
    opacity: 1;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .mobile-menu-btn {
    display: block;
  }
}

/* ==========================================================================
   Contenedor Principal
   ========================================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 5%;
}

.page-title {
  color: var(--color-primary);
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  font-weight: 700;
}

/* ==========================================================================
   Página: Nosotros
   ========================================================================== */
.about-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
  align-items: center;
}

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

  .about-section.reverse {
    direction: rtl;
  }

  .about-section.reverse>* {
    direction: ltr;
  }
}

.about-content h2 {
  color: var(--color-primary);
  font-size: 2rem;
}

.about-content p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1rem;
  text-align: justify;
  text-justify: inter-word;
}

.about-image img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.about-image img:hover {
  transform: translateY(-5px);
}

/* ==========================================================================
   Página: Servicios
   ========================================================================== */
.services-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.service-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-primary);
  /* Borde verde por defecto como en la imagen */
  transition: var(--transition-normal);
  padding: 2rem;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
  .service-card {
    flex-direction: row;
    align-items: center;
    gap: 2rem;
  }

  .service-image-container {
    flex: 0 0 30%;
    display: flex;
    justify-content: center;
  }

  .service-info {
    flex: 1;
  }
}

/* Variaciones de tarjetas según imagen */
.service-card.primary {
  border-color: var(--color-primary);
}

.service-card.primary h3 {
  color: var(--color-primary);
}

.service-card.dark {
  background-color: #1a237e;
  /* Azul oscuro corporativo de la imagen */
  color: white;
  border: none;
}

.service-card.dark h3,
.service-card.dark p {
  color: white;
}

@media (prefers-color-scheme: dark) {
  .service-card.dark {
    background-color: #0f172a;
  }
}

.service-card.light-blue {
  background-color: #e0f2f1;
  /* Verde/azul claro */
  border: 1px solid #4db6ac;
}

@media (prefers-color-scheme: dark) {
  .service-card.light-blue {
    background-color: #115e59;
    border-color: #0f766e;
  }
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.service-card.dark p {
  color: rgba(255, 255, 255, 0.8);
}

@media (prefers-color-scheme: dark) {
  .service-card.light-blue p {
    color: #ccfbf1;
  }
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  text-align: center;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: white;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border-color);
  margin-top: 4rem;
  color: var(--text-muted);
}