/* ============================================================
   styles.css — Limpieza de Tanques Sépticos CR
   Paleta: azul profundo + celeste vibrante + blanco
   Tipografía: Barlow Condensed (títulos) + DM Sans (cuerpo)
   Tema alternativo: verde corporativo L&E
   ============================================================ */

/* ============================================================
   1. CUSTOM PROPERTIES (Variables CSS)
   ============================================================ */
:root {
  /* Colores principales */
  --blue-900:  #0D2B45;
  --blue-800:  #0D47A1;
  --blue-700:  #1565C0;
  --blue-600:  #1976D2;
  --blue-500:  #2196F3;
  --blue-400:  #42A5F5;
  --blue-100:  #BBDEFB;
  --blue-50:   #E3F2FD;

  --cyan-600:  #0097A7;
  --cyan-500:  #00BCD4;
  --cyan-400:  #26C6DA;
  --cyan-100:  #B2EBF2;

  --accent:    #00BCD4;     /* celeste vibrante */
  --primary:   #1565C0;     /* azul principal   */
  --primary-dark: #0D3C7A;  /* azul oscuro hover */
  --whatsapp:  #25D366;

  /* Superficies */
  --surface:   #F0F7FF;
  --surface-2: #FFFFFF;
  --dark-bg:   #0D2B45;

  /* Texto */
  --text-main: #0D2B45;
  --text-body: #3A5A7C;
  --text-light: #7BA7C8;
  --text-white: #FFFFFF;

  /* RGB para rgba() dinámico */
  --primary-rgb: 21, 101, 192;
  --accent-rgb: 0, 188, 212;
  --dark-rgb: 13, 43, 69;

  /* Colores de gradiente intermedios */
  --hero-mid: #0A4060;
  --contact-start: #0A3A5C;

  /* Fondos de iconos de servicio (alternativos) */
  --service-icon-alt-bg: #E0F7FA;
  --service-icon-accent-bg: #FFF8E1;
  --service-icon-danger-bg: #FBE9E7;

  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(var(--primary-rgb), 0.10);
  --shadow-md: 0 6px 24px rgba(var(--primary-rgb), 0.16);
  --shadow-lg: 0 16px 48px rgba(var(--dark-rgb), 0.22);

  /* Tipografía */
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  /* Espaciado base */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  6rem;

  /* Bordes */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;

  /* Transiciones */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --theme-transition: 0.4s ease;

  /* Colores del SVG del camión (ilustración hero) */
  --svg-bg-start:         #0D47A1;
  --svg-bg-end:           #006064;
  --svg-ground:           #1A3A52;
  --svg-road:             #1E4D6B;
  --svg-cabin-body:       #1565C0;
  --svg-cabin-top:        #1976D2;
  --svg-cabin-dark:       #0D47A1;
  --svg-windshield:       #87CEEB;
  --svg-door-handle:      #90CAF9;
  --svg-tank-body:        #0288D1;
  --svg-tank-top:         #039BE5;
  --svg-tank-ribs:        #0277BD;
  --svg-chassis:          #0D47A1;
  --svg-tank-ind-bg:      #B3E5FC;
  --svg-tank-ind-fill:    #00BCD4;
  --svg-sun:              #FFD166;
  --svg-headlight-top:    #FFD54F;
  --svg-headlight-bottom: #FF5722;
  --svg-hose:             #FFA000;
  --svg-hose-tip:         #FF8F00;
  --svg-tire-outer:       #1A1A2E;
  --svg-tire-middle:      #37474F;
  --svg-tire-hub:         #90A4AE;

  /* Navbar */
  --navbar-h: 72px;
}


/* ============================================================
   1B. TEMA VERDE (data-theme="green")
   ============================================================ */
[data-theme="green"] {
  /* Blue shades → Green shades */
  --blue-900: #090B0A;
  --blue-800: #0D1A0B;
  --blue-700: #8CC542;
  --blue-600: #8CC542;
  --blue-500: #8CC542;
  --blue-400: #A8D270;
  --blue-100: #D9EDC2;
  --blue-50:  #EDF5E6;

  /* Cyan shades → Green shades */
  --cyan-600: #6DA832;
  --cyan-500: #8CC542;
  --cyan-400: #8CC542;
  --cyan-100: #D9EDC2;

  /* Semantic colors */
  --accent:       #8CC542;
  --primary:      #8CC542;
  --primary-dark: #6DA832;
  --whatsapp:     #25D366;   /* se mantiene */

  /* Surfaces */
  --surface:   #F5F7F4;
  --surface-2: #FFFFFF;
  --dark-bg:   #090B0A;

  /* Texto */
  --text-main:  #090B0A;
  --text-body:  #4D4F4E;
  --text-light: #7A7C7B;
  --text-white: #FFFFFF;

  /* RGB dinámico */
  --primary-rgb: 140, 197, 66;
  --accent-rgb:  140, 197, 66;
  --dark-rgb:    9, 11, 10;

  /* Gradientes intermedios */
  --hero-mid:     #1A2F15;
  --contact-start: #1A2F15;

  /* Fondos iconos servicio */
  --service-icon-alt-bg:    #D9EDC2;
  --service-icon-accent-bg: #EDF5E6;
  --service-icon-danger-bg: #F5E6E6;

  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(var(--primary-rgb), 0.10);
  --shadow-md: 0 6px 24px rgba(var(--primary-rgb), 0.16);
  --shadow-lg: 0 16px 48px rgba(var(--dark-rgb), 0.22);

  /* Colores del SVG del camión (verde) */
  --svg-bg-start:         #1B3D0D;
  --svg-bg-end:           #2E5C1A;
  --svg-ground:           #1A2F15;
  --svg-road:             #1E3A1A;
  --svg-cabin-body:       #8CC542;
  --svg-cabin-top:        #A8D270;
  --svg-cabin-dark:       #6DA832;
  --svg-windshield:       #D9EDC2;
  --svg-door-handle:      #C5E8A3;
  --svg-tank-body:        #6DA832;
  --svg-tank-top:         #8CC542;
  --svg-tank-ribs:        #5A8C28;
  --svg-chassis:          #6DA832;
  --svg-tank-ind-bg:      #D9EDC2;
  --svg-tank-ind-fill:    #8CC542;
  --svg-sun:              #FFD166;
  --svg-headlight-top:    #FFD54F;
  --svg-headlight-bottom: #FF5722;
  --svg-hose:             #E67E00;
  --svg-hose-tip:         #CC7000;
  --svg-tire-outer:       #1A1A2E;
  --svg-tire-middle:      #37474F;
  --svg-tire-hub:         #90A4AE;
}


/* ============================================================
   2. RESET Y 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(--text-main);
  background: var(--surface);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--theme-transition), color var(--theme-transition);
}

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

ul { list-style: none; }

a {
  color: inherit;
  text-decoration: none;
}

strong { font-weight: 600; }

/* ============================================================
   3. UTILIDADES GLOBALES
   ============================================================ */

/* Contenedor responsivo */
.container {
  width: 100%;
  max-width: 1160px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Sección base */
.section {
  padding-block: var(--space-lg);
}

/* Cabecera de sección */
.section__header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-md);
}

.section__badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--cyan-100);
  padding: 0.3em 1em;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xs);
  transition: background-color var(--theme-transition), color var(--theme-transition);
}

.section__badge--light {
  color: var(--surface);
  background: rgba(255,255,255,0.15);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  transition: color var(--theme-transition);
}

.section__title--left { text-align: left; }

.section__subtitle {
  font-size: 1.05rem;
  color: var(--text-body);
  max-width: 600px;
  margin-inline: auto;
  transition: color var(--theme-transition);
}

/* ============================================================
   4. BOTONES
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  padding: 0.7em 1.8em;
  transition: var(--transition), background-color var(--theme-transition), color var(--theme-transition), border-color var(--theme-transition), box-shadow var(--theme-transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn--sm  { font-size: 0.875rem; padding: 0.5em 1.2em; }
.btn--lg  { font-size: 1.05rem;  padding: 0.85em 2.2em; }

/* Primario */
.btn--primary {
  background: var(--primary);
  color: var(--text-white);
  box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.35);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--primary-dark);
  box-shadow: 0 6px 22px rgba(var(--primary-rgb), 0.5);
  transform: translateY(-2px);
}

/* WhatsApp */
.btn--whatsapp {
  background: var(--whatsapp);
  color: var(--text-white);
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.35);
}
.btn--whatsapp:hover,
.btn--whatsapp:focus-visible {
  background: #1da851;
  box-shadow: 0 6px 22px rgba(37, 211, 102, 0.5);
  transform: translateY(-2px);
}

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--text-white);
  border: 2px solid rgba(255,255,255,0.55);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.85);
  transform: translateY(-2px);
}

/* ============================================================
   5. NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  height: var(--navbar-h);
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), background-color var(--theme-transition);
}

/* Estado sticky: cuando el usuario hace scroll */
.navbar.scrolled {
  background: var(--dark-bg);
  box-shadow: 0 2px 20px rgba(0,0,0,0.25);
}

.navbar__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.01em;
}

.navbar__logo-icon {
  color: var(--accent);
  font-size: 1.3rem;
  transition: color var(--theme-transition);
}

.navbar__logo-text strong {
  color: var(--accent);
  transition: color var(--theme-transition);
}

/* Logo: versión corta visible por defecto (móvil-first) */
.navbar__logo-short { display: inline; }
.navbar__logo-full  { display: none; }

/* Lista de enlaces */
.navbar__list {
  display: flex;
  gap: 0.25rem;
}

.navbar__link {
  display: block;
  padding: 0.4em 0.9em;
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius-full);
  transition: var(--transition);
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--text-white);
  background: rgba(255,255,255,0.12);
}

/* Botón hamburguesa (oculto en desktop) */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger {
  display: block;
  width: 26px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--text-white);
  transition: var(--transition);
}

/* Estado abierto hamburguesa */
.navbar__toggle.open .hamburger:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.navbar__toggle.open .hamburger:nth-child(2) {
  opacity: 0;
}
.navbar__toggle.open .hamburger:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ============================================================
   6. HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--hero-mid) 50%, var(--cyan-600) 100%);
  display: flex;
  align-items: center;
  padding-top: var(--navbar-h);
  overflow: hidden;
}

/* Burbujas animadas */
.hero__bubbles { position: absolute; inset: 0; pointer-events: none; }

.bubble {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  animation: floatBubble linear infinite;
}

.bubble--1 { width: 80px;  height: 80px;  bottom: -80px; left: 10%;  animation-duration: 12s; animation-delay: 0s;  }
.bubble--2 { width: 50px;  height: 50px;  bottom: -50px; left: 30%;  animation-duration: 9s;  animation-delay: 2s;  }
.bubble--3 { width: 120px; height: 120px; bottom: -120px;left: 55%;  animation-duration: 15s; animation-delay: 1s;  }
.bubble--4 { width: 40px;  height: 40px;  bottom: -40px; left: 75%;  animation-duration: 8s;  animation-delay: 3s;  }
.bubble--5 { width: 90px;  height: 90px;  bottom: -90px; left: 85%;  animation-duration: 11s; animation-delay: 0.5s;}
.bubble--6 { width: 60px;  height: 60px;  bottom: -60px; left: 45%;  animation-duration: 10s; animation-delay: 4s;  }

@keyframes floatBubble {
  0%   { transform: translateY(0)    scale(1);   opacity: 0.7; }
  80%  { opacity: 0.5; }
  100% { transform: translateY(-110vh) scale(1.2); opacity: 0; }
}

/* Layout interno hero */
.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  align-items: center;
  padding-block: var(--space-lg);
  position: relative;
  z-index: 1;
}

/* Badge superior */
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-400);
  background: rgba(var(--accent-rgb), 0.12);
  border: 1px solid rgba(var(--accent-rgb), 0.3);
  padding: 0.4em 1.1em;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  transition: color var(--theme-transition), background-color var(--theme-transition), border-color var(--theme-transition);
}

/* Título hero */
.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 4.5rem);
  font-weight: 900;
  line-height: 1.0;
  color: var(--text-white);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.hero__title-highlight {
  color: var(--cyan-400);
  position: relative;
  transition: color var(--theme-transition);
}

/* Subtítulo */
.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: rgba(255,255,255,0.82);
  max-width: 540px;
  margin-bottom: 2rem;
}

/* Acciones CTA */
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 2.5rem;
}

/* Indicadores de confianza */
.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.78);
}

.trust-item i {
  color: var(--cyan-400);
  font-size: 1rem;
  transition: color var(--theme-transition);
}

/* Wrapper imagen hero */
.hero__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.hero__img-wrapper {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.hero__illustration {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 20px 60px rgba(0,0,0,0.4));
  animation: heroFloat 5s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0);   }
  50%       { transform: translateY(-12px); }
}

/* Badge flotante sobre imagen */
.hero__badge-float {
  position: absolute;
  bottom: -12px;
  right: -8px;
  display: flex;
  align-items: center;
  gap: 0.6em;
  background: var(--surface-2);
  color: var(--primary);
  border-radius: var(--radius-md);
  padding: 0.65em 1.1em;
  box-shadow: var(--shadow-lg);
  font-size: 0.82rem;
  font-weight: 600;
  transition: background-color var(--theme-transition), color var(--theme-transition);
}

.hero__badge-float i { color: var(--accent); font-size: 1.4rem; transition: color var(--theme-transition); }

/* Ola inferior hero */
.hero__wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
}
.hero__wave svg { width: 100%; height: 60px; }

/* ============================================================
   6B. CREDENCIALES HERO (bloque de insignias dentro del visual)
   ============================================================ */
.hero__creds {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
  width: 100%;
  max-width: 500px;
  align-self: flex-end;
}

.cred-badge {
  display: flex;
  align-items: center;
  gap: 0.65em;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 0.7em 0.9em;
  backdrop-filter: blur(8px);
  transition: background var(--transition), border-color var(--transition);
}

.cred-badge:hover {
  background: rgba(255, 255, 255, 0.17);
  border-color: rgba(var(--accent-rgb), 0.5);
}

.cred-badge i {
  color: var(--cyan-400);
  font-size: 1.35rem;
  flex-shrink: 0;
  transition: color var(--theme-transition);
}

.cred-badge strong {
  display: block;
  font-size: 0.8rem;
  color: var(--text-white);
  font-weight: 700;
  line-height: 1.2;
}

.cred-badge span {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.3;
}

/* ============================================================
   7. BARRA DE CONFIANZA (debajo del hero)
   ============================================================ */
.trust-bar {
  background: var(--surface-2);
  border-bottom: 1px solid var(--blue-100);
  padding-block: 2.2rem;
  transition: background-color var(--theme-transition), border-color var(--theme-transition);
}

.trust-bar__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
}

.trust-bar__item {
  display: flex;
  align-items: center;
  gap: 0.85em;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  transition: color var(--theme-transition);
}

.trust-bar__item i {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--surface-2);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.3);
  transition: background var(--theme-transition), box-shadow var(--theme-transition);
}

/* ============================================================
   8. SERVICIOS
   ============================================================ */
.services { background: var(--surface); transition: background-color var(--theme-transition); }

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

/* Tarjeta de servicio */
.service-card {
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--blue-100);
  transition: var(--transition), background-color var(--theme-transition), border-color var(--theme-transition), box-shadow var(--theme-transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  border-radius: 2px 0 0 2px;
  transition: width var(--transition), background-color var(--theme-transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-400);
}
.service-card:hover::before { width: 6px; }

/* Wrapper de icono */
.service-card__icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: var(--blue-50);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  transition: background-color var(--theme-transition);
}

.service-card__icon-wrap--alt    { background: var(--service-icon-alt-bg); }
.service-card__icon-wrap--accent { background: var(--service-icon-accent-bg); }
.service-card__icon-wrap--danger { background: var(--service-icon-danger-bg); }

.service-card__icon {
  font-size: 1.7rem;
  color: var(--primary);
  transition: color var(--theme-transition);
}

.service-card__icon-wrap--alt    .service-card__icon { color: var(--cyan-600); }
.service-card__icon-wrap--accent .service-card__icon { color: #F9A825; }
.service-card__icon-wrap--danger .service-card__icon { color: #E53935; }

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.65rem;
  transition: color var(--theme-transition);
}

.service-card__desc {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 1.2rem;
  line-height: 1.6;
  transition: color var(--theme-transition);
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.service-card__list li {
  display: flex;
  align-items: center;
  gap: 0.55em;
  font-size: 0.875rem;
  color: var(--text-body);
  transition: color var(--theme-transition);
}

.service-card__list li i { color: var(--primary); font-size: 0.8rem; transition: color var(--theme-transition); }

/* CTA debajo de servicios */
.services__cta {
  text-align: center;
  background: linear-gradient(135deg, var(--blue-50), var(--cyan-100));
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--blue-100);
  transition: background var(--theme-transition), border-color var(--theme-transition);
}

.services__cta p {
  font-size: 1.1rem;
  color: var(--text-body);
  margin-bottom: 1.2rem;
  transition: color var(--theme-transition);
}

/* ============================================================
   9. NOSOTROS
   ============================================================ */
.about {
  background: linear-gradient(160deg, var(--dark-bg) 0%, var(--hero-mid) 100%);
  color: var(--text-white);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  align-items: center;
}

/* Estadísticas */
.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.2rem;
  text-align: center;
  backdrop-filter: blur(6px);
  transition: var(--transition), background-color var(--theme-transition), border-color var(--theme-transition);
}

.stat-card:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
}

.stat-card--alt { border-color: rgba(var(--accent-rgb), 0.3); background: rgba(var(--accent-rgb), 0.08); transition: border-color var(--theme-transition), background-color var(--theme-transition); }

.stat-card__number {
  display: block;
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--cyan-400);
  line-height: 1;
  transition: color var(--theme-transition);
}

.stat-card__unit {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--cyan-400);
  font-weight: 700;
  transition: color var(--theme-transition);
}

.stat-card__label {
  display: block;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  margin-top: 0.4rem;
  font-weight: 500;
}

/* Contenido texto nosotros */
.about__content {
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.about__content .section__badge { margin-bottom: 0.75rem; }
.about__content .section__title {
  color: var(--text-white);
  margin-bottom: 1rem;
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
}

.about__content p {
  font-size: 0.97rem;
  color: rgba(255,255,255,0.78);
  margin-bottom: 1rem;
  line-height: 1.7;
  overflow-wrap: break-word;
  word-break: break-word;
}

.about__certs {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 0.75em;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
}

.cert-item i { color: var(--cyan-400); font-size: 1rem; width: 20px; transition: color var(--theme-transition); }

/* ============================================================
   10. BENEFICIOS
   ============================================================ */
.benefits { background: var(--surface-2); transition: background-color var(--theme-transition); }

.benefits__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1rem;
}

.benefit-item {
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--blue-100);
  transition: var(--transition), background-color var(--theme-transition), border-color var(--theme-transition);
}

.benefit-item:hover {
  transform: translateX(6px);
  border-color: var(--blue-400);
  box-shadow: var(--shadow-sm);
}

.benefit-item__icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.35);
  transition: background var(--theme-transition), box-shadow var(--theme-transition);
}

.benefit-item__body h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.35rem;
  transition: color var(--theme-transition);
}

.benefit-item__body p {
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.6;
  transition: color var(--theme-transition);
}

/* ============================================================
   11. CONTACTO
   ============================================================ */
.coverage {
  background: var(--surface);
  transition: background-color var(--theme-transition);
}

.coverage__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.9rem;
  max-width: 820px;
  margin-inline: auto;
}

.coverage__grid span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0.8rem 1rem;
  color: var(--text-main);
  font-weight: 700;
  text-align: center;
  background: var(--surface-2);
  border: 1px solid var(--blue-100);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition), background-color var(--theme-transition), border-color var(--theme-transition), color var(--theme-transition);
}

.coverage__grid span:hover {
  transform: translateY(-3px);
  border-color: var(--blue-400);
  box-shadow: var(--shadow-md);
}

.contact {
  background: linear-gradient(160deg, var(--contact-start) 0%, var(--blue-900) 100%);
  color: var(--text-white);
  position: relative;
  padding-top: 0;
}

.contact__wave-top { line-height: 0; }
.contact__wave-top svg { width: 100%; height: 60px; }

.contact__inner { padding-block: var(--space-md); }

.contact__title   { color: var(--text-white); }
.contact__subtitle { color: rgba(255,255,255,0.75); }

/* Tarjetas de contacto */
.contact__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: var(--space-md);
}

.contact-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: var(--transition), background-color var(--theme-transition), border-color var(--theme-transition);
}

.contact-card:hover {
  background: rgba(255,255,255,0.11);
  transform: translateY(-4px);
}

.contact-card__icon {
  font-size: 3rem;
  color: var(--whatsapp);
  margin-bottom: 1rem;
}

.contact-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
}

.contact-card p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 1.5rem;
}

.contact-card__btn { width: 100%; justify-content: center; font-size: 1.1rem; }

/* Tarjeta info */
.contact-card--info { text-align: left; }

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-info-item i {
  color: var(--cyan-400);
  font-size: 1.1rem;
  width: 20px;
  margin-top: 0.15rem;
  flex-shrink: 0;
  transition: color var(--theme-transition);
}

.contact-info-item strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  margin-bottom: 0.2rem;
  transition: color var(--theme-transition);
}

.contact-info-item span {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.5;
}

/* ============================================================
   12. FOOTER
   ============================================================ */
.footer {
  background: var(--blue-900);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-block: 1.8rem;
  transition: background-color var(--theme-transition);
}

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

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
}

.footer__brand i { color: var(--accent); transition: color var(--theme-transition); }

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.2rem;
  justify-content: center;
}

.footer__nav a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer__nav a:hover { color: rgba(255,255,255,0.9); }

.footer__copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

.footer__spotico {
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  transition: color var(--transition);
}
.footer__spotico:hover {
  color: var(--accent);
}

/* ============================================================
   13. ANIMACIONES DE ENTRADA (scroll reveal)
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Escalonado para hijos */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* ============================================================
   14. RESPONSIVE — TABLET (≥ 640px)
   ============================================================ */
@media (min-width: 640px) {

  .trust-bar__inner {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .services__grid {
    grid-template-columns: 1fr 1fr;
  }

  .benefits__list {
    grid-template-columns: 1fr 1fr;
  }

  .contact__cards {
    grid-template-columns: 1fr 1fr;
  }

  .about__certs {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

/* ============================================================
   15. RESPONSIVE — DESKTOP (≥ 960px)
   ============================================================ */
@media (min-width: 960px) {

  /* Navbar */
  .navbar__toggle { display: none; }
  .navbar__menu {
    display: flex !important; /* override JS */
    position: static;
    background: none;
    padding: 0;
    border: none;
    box-shadow: none;
  }

  /* Logo: versión completa en desktop */
  .navbar__logo-short { display: none; }
  .navbar__logo-full  { display: inline; }

  /* Hero layout 2 columnas */
  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding-block: var(--space-xl);
  }

  /* Servicios: 3 en primera fila + 2 centrados en segunda */
  .services__grid {
    grid-template-columns: repeat(6, 1fr);
  }
  .service-card:nth-child(1) { grid-column: 1 / 3; }
  .service-card:nth-child(2) { grid-column: 3 / 5; }
  .service-card:nth-child(3) { grid-column: 5 / 7; }
  .service-card:nth-child(4) { grid-column: 2 / 4; }
  .service-card:nth-child(5) { grid-column: 4 / 6; }

  /* About 2 columnas */
  .about__inner {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }

  /* Beneficios 3 columnas */
  .benefits__list {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Footer horizontal */
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ============================================================
   16. MOBILE — MENÚ DESPLEGABLE (< 960px)
   ============================================================ */
@media (max-width: 959px) {

  .navbar__toggle {
    display: flex;
  }

  .navbar__menu {
    display: none;
    position: absolute;
    top: var(--navbar-h);
    left: 0;
    width: 100%;
    background: var(--dark-bg);
    padding: 1.2rem 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  }

  .navbar__menu.open {
    display: block;
  }

  .navbar__list {
    flex-direction: column;
    gap: 0.2rem;
  }

  .navbar__link {
    padding: 0.75em 1em;
    border-radius: var(--radius-sm);
  }

  /* WA button: solo ícono en móvil */
  .navbar__wa-text { display: none; }

  /* Hero credentials: ocultas en móvil (visibles en trust bar y nosotros) */
  .hero__creds { display: none; }

  /* Hero badge: evitar desborde en pantallas pequeñas */
  .hero__badge {
    font-size: 0.72rem;
    padding: 0.35em 0.9em;
    white-space: normal;
    text-align: center;
  }

  /* Hero inner: reducir padding vertical en móvil */
  .hero__inner {
    padding-block: var(--space-md);
  }

  /* Services CTA: reducir padding en móvil */
  .services__cta {
    padding: 1.8rem 1.2rem;
  }
}

/* ============================================================
   17. ACCESIBILIDAD — foco visible
   ============================================================ */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}


/* ============================================================
   18. SLIDESHOW DE FONDO — SECCIÓN CONTACTO
   ============================================================ */

/* --- CONTENEDOR PRINCIPAL DEL SLIDESHOW --- */
.contact__slideshow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
}

/* --- TRACK QUE CONTIENE LOS SLIDES --- */
.contact__slideshow-track {
  position: relative;
  width: 100%;
  height: 100%;
}

/* --- CADA SLIDE (imagen de fondo) --- */
.contact__slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform: scale(1);
  transition: opacity 1.2s ease, transform 8s ease;
  will-change: opacity, transform;
}

.contact__slide.active {
  opacity: 1;
  z-index: 1;
}

.contact__slide.zoom {
  transform: scale(1.08);
}

.contact__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* --- OVERLAY OSCURO PARA LEGIBILIDAD --- */
.contact__slideshow-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.55);
  z-index: 2;
  pointer-events: none;
}

/* --- ASEGURAR QUE EL CONTENIDO QUEDE ENCIMA --- */
.contact__wave-top {
  position: relative;
  z-index: 2;
}

.contact__inner {
  position: relative;
  z-index: 2;
}

/* --- TRANSICIONES PARA EL TEMA --- */
.contact__slideshow-overlay {
  transition: background var(--theme-transition);
}

/* ============================================================
   19. BOTÓN DE CAMBIO DE TEMA
   ============================================================ */
.theme-toggle {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.35);
  background: var(--dark-bg);
  color: var(--accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transition: background-color var(--theme-transition), color var(--theme-transition), border-color var(--theme-transition), transform 0.25s ease, box-shadow 0.25s ease;
  outline: none;
}

.theme-toggle:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 28px rgba(0,0,0,0.4);
  border-color: var(--accent);
}

.theme-toggle:active {
  transform: scale(0.94);
}

.theme-toggle:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

/* Tooltip sutil */
.theme-toggle::after {
  content: 'Cambiar tema';
  position: absolute;
  right: 62px;
  background: var(--dark-bg);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.4em 1em;
  border-radius: var(--radius-full);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateX(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.theme-toggle:hover::after {
  opacity: 1;
  transform: translateX(0);
}