/* ============================================================
   styles.css — [NombreAgencia] | Agencia de Marketing Digital
   Paleta: Azul corporativo + Verde crecimiento
   Tipografía: DM Serif Display (títulos) + DM Sans (cuerpo)
   ============================================================ */


/* ============================================================
   0. VARIABLES GLOBALES (Design Tokens)
   ============================================================ */
:root {
  /* Colores principales */
  --color-primary:       #0A4FA3;   /* Azul corporativo */
  --color-primary-dark:  #073880;   /* Azul oscuro (hover) */
  --color-primary-light: #D6E8FF;   /* Azul claro (fondos suaves) */
  --color-accent:        #22C55E;   /* Verde crecimiento */
  --color-accent-dark:   #16A34A;   /* Verde oscuro (hover) */
  --color-accent-light:  #DCFCE7;   /* Verde muy claro */

  /* Neutros */
  --color-dark:     #0F172A;   /* Casi negro para texto */
  --color-text:     #1E293B;   /* Texto principal */
  --color-muted:    #64748B;   /* Texto secundario */
  --color-border:   #E2E8F0;   /* Bordes suaves */
  --color-surface:  #F8FAFC;   /* Fondo de secciones alternas */
  --color-white:    #FFFFFF;

  /* Tipografía */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  /* Tamaños de fuente */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* Espaciado */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 5rem;

  /* Layout */
  --container-max: 1200px;
  --container-pad: 1.5rem;
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-full: 9999px;

  /* Transición base */
  --transition: 0.25s ease;

  /* Sombras */
  --shadow-sm: 0 1px 3px rgba(10, 79, 163, 0.08);
  --shadow-md: 0 4px 16px rgba(10, 79, 163, 0.12);
  --shadow-lg: 0 12px 40px rgba(10, 79, 163, 0.16);
}


/* ============================================================
   1. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: var(--text-base);
}


/* ============================================================
   2. UTILIDADES
   ============================================================ */

/* Contenedor centrado */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--text-base);
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

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

.btn--accent:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
}

.btn--sm  { padding: 0.5rem 1.25rem; font-size: var(--text-sm); }
.btn--lg  { padding: 1rem 2.25rem; font-size: var(--text-lg); }
.btn--full { width: 100%; justify-content: center; }

/* Secciones genéricas */
.section {
  padding: var(--space-2xl) 0;
}

/* Encabezado de sección (reutilizable) */
.section__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section__tag {
  display: inline-block;
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.3rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.03em;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  color: var(--color-dark);
  line-height: 1.15;
  margin-bottom: var(--space-sm);
}

.section__desc {
  font-size: var(--text-lg);
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto;
}


/* ============================================================
   3. NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

/* Clase añadida por JS al hacer scroll */
.navbar.scrolled {
  padding: 0.75rem 0;
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-dark);
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-lg);
}

/* Menú de navegación */
.navbar__menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-muted);
  position: relative;
  padding-bottom: 2px;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  width: 100%;
}

/* Botón CTA del navbar */
.nav-cta {
  margin-left: 0.5rem;
}

/* Botón hamburguesa (mobile) */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  z-index: 100;
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

/* Estado abierto del hamburguesa */
.navbar__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle.open span:nth-child(2) { opacity: 0; }
.navbar__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }


/* ============================================================
   4. HERO — Carrusel
   ============================================================ */
.hero {
  height: 100vh;
  min-height: 600px;
  position: relative;
  overflow: hidden;
}

.hero__carousel {
  position: relative;
  width: 100%;
  height: 100%;
}

/* Slide base */
.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex;
  align-items: center;
}

.hero__slide.active {
  opacity: 1;
}

/* Overlay oscuro sobre la imagen */
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 79, 163, 0.80) 0%,
    rgba(15, 23, 42, 0.65) 60%,
    rgba(22, 163, 74, 0.30) 100%
  );
}

/* Contenido del slide */
.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  padding-top: 80px; /* espacio por la navbar */
  color: var(--color-white);
}

.hero__eyebrow {
  display: inline-block;
  background: rgba(34, 197, 94, 0.25);
  border: 1px solid rgba(34, 197, 94, 0.5);
  color: #86EFAC;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
  letter-spacing: 0.04em;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.1;
  margin-bottom: var(--space-md);
  color: var(--color-white);
  max-width: 700px;
}

.hero__title em {
  font-style: italic;
  color: #86EFAC; /* Verde claro para énfasis */
}

.hero__subtitle {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: rgba(255, 255, 255, 0.85);
  max-width: 520px;
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

/* Flechas del carrusel */
.carousel__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  color: var(--color-white);
  font-size: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel__arrow:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-50%) scale(1.05);
}

.carousel__arrow--prev { left: 1.5rem; }
.carousel__arrow--next { right: 1.5rem; }

/* Dots indicadores */
.carousel__dots {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.6rem;
  z-index: 10;
}

.carousel__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  border: none;
  transition: all var(--transition);
  cursor: pointer;
}

.carousel__dot.active {
  background: var(--color-accent);
  width: 28px;
  border-radius: var(--radius-full);
}

.carousel__dot:hover {
  background: rgba(255, 255, 255, 0.8);
}


/* ============================================================
   5. SERVICIOS
   ============================================================ */
.servicios {
  background: var(--color-white);
}

.servicios__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

/* Tarjeta de servicio */
.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

/* Acento superior de color */
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: var(--color-primary-light);
}

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

.service-card__icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  transition: all var(--transition);
}

.service-card:hover .service-card__icon {
  background: var(--color-primary);
  color: var(--color-white);
}

.service-card__title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--space-xs);
}

.service-card__desc {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition);
}

.service-card__link:hover {
  gap: 0.75rem;
  color: var(--color-accent-dark);
}


/* ============================================================
   6. MISIÓN & VISIÓN
   ============================================================ */
.mision {
  background: var(--color-surface);
}

.mision__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: var(--space-xl);
}

.mision__card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

/* Fondo decorativo de la tarjeta visión */
.mision__card--vision {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.mision__card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.mision__card--vision .mision__card-icon {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

.mision__card-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.mision__card--vision .mision__card-title {
  color: var(--color-white);
}

.mision__card-text {
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.mision__card--vision .mision__card-text {
  color: rgba(255, 255, 255, 0.85);
}

.mision__values {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.mision__values li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.mision__values li i {
  color: var(--color-accent);
  flex-shrink: 0;
}

.mision__card--vision .mision__values li {
  color: rgba(255, 255, 255, 0.9);
}

.mision__card--vision .mision__values li i {
  color: #86EFAC;
}

/* Fila de estadísticas */
.stats__row {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  flex-wrap: wrap;
  gap: 2rem;
}

.stat-item {
  text-align: center;
}

.stat-item__number {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--color-primary);
  line-height: 1;
}

.stat-item__suffix {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-accent);
}

.stat-item__label {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-top: 0.35rem;
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--color-border);
}


/* ============================================================
   7. CASOS DE ÉXITO
   ============================================================ */
.casos {
  background: var(--color-white);
}

.casos__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.caso-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.caso-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-primary-light);
}

.caso-card__logo {
  background: var(--color-surface);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--color-border);
  min-height: 100px;
}

.caso-logo-text {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.caso-card__body {
  padding: 1.5rem;
}

.caso-card__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent-dark);
  background: var(--color-accent-light);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.caso-card__result {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.6;
}

.caso-card__result strong {
  color: var(--color-primary);
  font-weight: 700;
}


/* ============================================================
   8. TESTIMONIOS
   ============================================================ */
.testimonios {
  background: var(--color-surface);
}

.testimonios__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.testimonio-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  transition: all 0.3s ease;
}

.testimonio-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.testimonio-card__quote {
  font-size: 1.75rem;
  color: var(--color-primary-light);
  margin-bottom: var(--space-sm);
}

.testimonio-card:hover .testimonio-card__quote {
  color: var(--color-accent-light);
}

.testimonio-card__text {
  font-size: var(--text-base);
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.testimonio-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.testimonio-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.testimonio-card__author strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-dark);
}

.testimonio-card__author span {
  font-size: var(--text-xs);
  color: var(--color-muted);
}


/* ============================================================
   9. CONTACTO
   ============================================================ */
.contacto {
  background: var(--color-white);
}

.contacto__layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 4rem;
  align-items: start;
}

/* Formulario */
.contacto__form-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.contacto__form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(10, 79, 163, 0.1);
}

/* Borde rojo si hay error */
.form-group input.error,
.form-group textarea.error {
  border-color: #EF4444;
}

.form-error {
  font-size: var(--text-xs);
  color: #EF4444;
  font-weight: 500;
  min-height: 16px;
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

/* Widget de hCaptcha */
.form-group--captcha .h-captcha {
  min-height: 78px;
}

/* El iframe de hCaptcha mide 303px, se encoge en pantallas angostas */
@media (max-width: 360px) {
  .form-group--captcha .h-captcha {
    transform: scale(0.85);
    transform-origin: 0 0;
  }
}

/* Mensaje de éxito */
.form-success {
  display: none;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  color: var(--color-accent-dark);
  font-size: var(--text-sm);
  font-weight: 500;
  margin-top: 0.5rem;
}

.form-success.visible {
  display: flex;
}

/* Mensaje de error de envio */
.form-alert {
  display: none;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: #FEF2F2;
  border: 1px solid #EF4444;
  border-radius: var(--radius-md);
  color: #B91C1C;
  font-size: var(--text-sm);
  font-weight: 500;
  margin-top: 0.5rem;
}

.form-alert.visible {
  display: flex;
}

.form-alert i {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.form-success i {
  font-size: 1.25rem;
  flex-shrink: 0;
}

/* Info lateral */
.contacto__info {
  padding-top: 0.5rem;
}

.contacto__info-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-dark);
  margin-bottom: var(--space-lg);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: var(--space-lg);
}

.contact-item__icon {
  width: 42px;
  height: 42px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.2rem;
}

.contact-item p {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.5;
}

/* Redes sociales */
.contacto__social {
  margin-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-lg);
}

.contacto__social-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}


/* ============================================================
   10. FOOTER
   ============================================================ */
.footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding-top: var(--space-2xl);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Logo en footer */
.footer__logo .logo-text {
  color: var(--color-white);
}

.footer__tagline {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin: var(--space-sm) 0 var(--space-md);
  color: rgba(255, 255, 255, 0.55);
}

/* Social links en footer */
.footer .social-link {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.6);
}

.footer .social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

.footer__col-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer__links a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

/* Barra inferior del footer */
.footer__bottom {
  padding: var(--space-md) 0;
}

.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer__bottom p {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
}


/* ============================================================
   11. ANIMACIONES DE ENTRADA (Intersection Observer)
   ============================================================ */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Delay escalonado para tarjetas en grid */
.fade-in-up:nth-child(2) { transition-delay: 0.1s; }
.fade-in-up:nth-child(3) { transition-delay: 0.2s; }
.fade-in-up:nth-child(4) { transition-delay: 0.3s; }


/* ============================================================
   12. RESPONSIVE — Tablets (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
  /* Ocultar menú desktop */
  .navbar__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 5rem 2rem 2rem;
    gap: 1.25rem;
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    transition: right 0.35s ease;
    z-index: 99;
  }

  .navbar__menu.open {
    right: 0;
  }

  .nav-link {
    font-size: var(--text-base);
  }

  .navbar__toggle {
    display: flex;
  }

  /* Misión - una columna */
  .mision__grid {
    grid-template-columns: 1fr;
  }

  /* Estadísticas - wrap */
  .stat-divider {
    display: none;
  }

  .stats__row {
    gap: 1.5rem;
  }

  /* Contacto - una columna */
  .contacto__layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  /* Footer - dos columnas */
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}


/* ============================================================
   13. RESPONSIVE — Mobile (≤ 600px)
   ============================================================ */
@media (max-width: 600px) {
  :root {
    --space-2xl: 3.5rem;
  }

  /* Hero */
  .hero__content {
    padding-top: 100px;
  }

  .carousel__arrow {
    width: 40px;
    height: 40px;
    font-size: 0.85rem;
  }

  .carousel__arrow--prev { left: 0.75rem; }
  .carousel__arrow--next { right: 0.75rem; }

  /* Formulario - una columna */
  .form-row {
    grid-template-columns: 1fr;
  }

  /* Footer - una columna */
  .footer__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Footer bottom */
  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  /* Sección misión stats - cuadrícula */
  .stats__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}