/*
  ============================================================
  CoreTech Studio — styles.css
  Arquitectura: variables → reset → layout → components → utilities
  Mobile-first. BEM-like naming convention.
  ============================================================

  SECCIONES:
  1. Variables / Design Tokens (:root)   ← EDITAR colores aquí
  2. Reset & Base
  3. Typography
  4. Layout Utilities (container, grid)
  5. Animations / Reveal
  6. Header & Nav
  7. Hero
  8. Section Labels & Shared
  9. Why / Problema
  10. Services
  11. Pricing
  12. Process
  13. Differentiators
  14. Testimonials
  15. Contact & Form
  16. Footer
  17. WhatsApp Float
  18. Responsive (breakpoints)
  ============================================================
*/

/* ============================================================
   1. VARIABLES / DESIGN TOKENS
   EDITAR: modifica los valores aquí para cambiar toda la paleta
   ============================================================ */
:root {
  /* Colores principales */
  --color-bg:           #060f1e;      /* Fondo principal (azul muy oscuro) */
  --color-bg-surface:   #0d1f35;      /* Superficie de cards */
  --color-bg-elevated:  #132944;      /* Superficie elevada / featured card */
  --color-primary:      #0b2340;      /* Azul corporativo */
  --color-accent:       #00d4aa;      /* Cian/verde — acento principal */
  --color-accent-hover: #00b894;      /* Acento en hover */
  --color-accent-dim:   rgba(0,212,170,.12); /* Acento con transparencia */

  /* Texto */
  --color-text:         #e8f0fe;      /* Texto principal */
  --color-text-muted:   #8ba3bf;      /* Texto secundario/muted */
  --color-text-faint:   #4a6580;      /* Texto terciario */
  --color-white:        #ffffff;

  /* Bordes */
  --color-border:       rgba(255,255,255,.07);
  --color-border-accent:rgba(0,212,170,.25);

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

  /* Tamaños de fuente (fluid-ish) */
  --fs-xs:    0.75rem;
  --fs-sm:    0.875rem;
  --fs-base:  1rem;
  --fs-md:    1.125rem;
  --fs-lg:    1.375rem;
  --fs-xl:    1.75rem;
  --fs-2xl:   2.25rem;
  --fs-3xl:   3rem;
  --fs-4xl:   3.75rem;

  /* Espaciado */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --max-width:         1200px;
  --container-padding: var(--space-6);

  /* Radios */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  /* Sombras */
  --shadow-sm:  0 2px 8px rgba(0,0,0,.25);
  --shadow-md:  0 8px 32px rgba(0,0,0,.35);
  --shadow-glow:0 0 40px rgba(0,212,170,.15);

  /* Transiciones */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Nav */
  --nav-height: 72px;
}


/* ============================================================
   SCROLL MARGIN — Corrects anchor offset behind fixed nav.
   Applied to every section that is a navigation target.
   ============================================================ */
section[id],
main[id] {
  scroll-margin-top: var(--nav-height);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

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

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

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-bg);
}


/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-white);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-lg); }

p { color: var(--color-text-muted); }

strong { color: var(--color-text); font-weight: 600; }

.accent { color: var(--color-accent); }

.icon {
  display: inline-block;
  width: 1.1em;
  height: 1.1em;
  vertical-align: middle;
  flex-shrink: 0;
}


/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section-title {
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  margin-bottom: var(--space-12);
  max-width: 600px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}


/* ============================================================
   5. ANIMATIONS / REVEAL ON SCROLL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger delay helpers for children */
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(0.8); }
}

@keyframes float-mockup {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}


/* ============================================================
   6. HEADER & NAV
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background-color: rgba(6,15,30,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

.site-header.scrolled {
  background-color: rgba(6,15,30,0.98);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-md);
  color: var(--color-white);
  white-space: nowrap;
}

.nav__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: var(--fs-sm);
  font-weight: 800;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.nav__logo-accent { color: var(--color-accent); }

/* Menu links */
.nav__menu {
  display: none;
  gap: var(--space-6);
  list-style: none;
  margin-left: auto;
}

.nav__link {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
  padding-block: var(--space-2);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-white);
}

.nav__link:hover::after { width: 100%; }

/* Active state: set by JS scroll-spy on current section */
.nav__link.is-active {
  color: var(--color-accent);
}

.nav__link.is-active::after {
  width: 100%;
  background: var(--color-accent);
}

.nav__cta {
  margin-left: auto;
  white-space: nowrap;
  display: none;
}

/* Hamburger */
.nav__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-left: auto;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav__toggle:hover { background: var(--color-bg-surface); }

.nav__hamburger,
.nav__hamburger::before,
.nav__hamburger::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base);
}

.nav__hamburger {
  position: relative;
}

.nav__hamburger::before,
.nav__hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav__hamburger::before { top: -7px; }
.nav__hamburger::after  { top:  7px; }

/* Hamburger open state */
.nav__toggle[aria-expanded="true"] .nav__hamburger {
  background: transparent;
}

.nav__toggle[aria-expanded="true"] .nav__hamburger::before {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle[aria-expanded="true"] .nav__hamburger::after {
  transform: rotate(-45deg) translate(5px, -5px);
}


/* ============================================================
   7. HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: calc(var(--nav-height) + var(--space-12));
  padding-bottom: var(--space-16);
  overflow: hidden;
}

/* Grid background pattern */
.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}

/* Glow effect */
.hero__glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(0,212,170,.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border-accent);
  border-radius: 100px;
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--space-8);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero__title-line {
  display: block;
  color: var(--color-white);
}

.hero__title-sub {
  display: block;
  background: linear-gradient(135deg, var(--color-accent) 0%, #5be8cd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 0.6em;
  font-weight: 600;
  margin-top: var(--space-2);
  letter-spacing: 0;
}

.hero__subtitle {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-8);
  max-width: 540px;
  margin-inline: auto;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.hero__meet-note {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-faint);
}

.hero__meet-note strong { color: var(--color-text-muted); }

/* Mockup placeholder */
.hero__mockup {
  position: relative;
  z-index: 1;
  margin-top: var(--space-16);
  animation: float-mockup 4s ease-in-out infinite;
}

.mockup__browser {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md), var(--shadow-glow);
  max-width: 560px;
  margin-inline: auto;
}

.mockup__bar {
  background: var(--color-bg);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.mockup__bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-text-faint);
  opacity: .5;
}

.mockup__url {
  flex: 1;
  background: rgba(255,255,255,.04);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-4);
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
  text-align: center;
}

.mockup__screen {
  padding: var(--space-8);
  min-height: 180px;
}

.mockup__content {
  max-width: 300px;
}

.mockup__line {
  height: 14px;
  border-radius: 8px;
  background: var(--color-bg-elevated);
  margin-bottom: var(--space-3);
}

.mockup__line--h {
  width: 70%;
  height: 22px;
  background: linear-gradient(90deg, var(--color-accent-dim), transparent);
}

.mockup__line--short { width: 50%; }

.mockup__btns {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.mockup__btn {
  height: 32px;
  width: 100px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  opacity: .7;
}

.mockup__btn--ghost {
  background: transparent;
  border: 1px solid var(--color-border);
  opacity: .4;
}


/* ============================================================
   8. BUTTONS (shared component)
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    border-color var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
  border: 2px solid var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: 0 4px 20px rgba(0,212,170,.3);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn--lg {
  padding: 0.9rem 2rem;
  font-size: var(--fs-base);
}

.btn--block {
  width: 100%;
}


/* ============================================================
   9. WHY / PROBLEMA
   ============================================================ */
.why {
  padding-block: var(--space-24);
  position: relative;
}

.why::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 80% 50%, rgba(11,35,64,.8) 0%, transparent 70%);
  pointer-events: none;
}

.why__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.why__card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.why__card:hover {
  border-color: var(--color-border-accent);
  transform: translateY(-3px);
}

.why__card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.why__card:hover::after { opacity: 1; }

.why__card-icon {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent-dim);
  margin-bottom: var(--space-4);
  line-height: 1;
  background: linear-gradient(135deg, var(--color-accent), transparent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.why__card-title {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-3);
}

.why__card p {
  font-size: var(--fs-base);
  line-height: 1.7;
}


/* ============================================================
   10. SERVICES
   ============================================================ */
.services {
  padding-block: var(--space-24);
  background: linear-gradient(180deg, transparent, rgba(13,31,53,.5), transparent);
}

.services__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.service-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-8) var(--space-8);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.service-card--alt {
  background: linear-gradient(135deg, var(--color-bg-elevated), var(--color-bg-surface));
  border-color: var(--color-border-accent);
}

.service-card:hover { border-color: var(--color-border-accent); }

.service-card__badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border-accent);
  border-radius: 100px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.service-card__badge--alt {
  background: rgba(11,35,64,.5);
  border-color: rgba(0,212,170,.4);
}

.service-card__title {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-3);
}

.service-card__desc {
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.service-card__list {
  list-style: none;
  margin-bottom: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.service-card__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.service-card__list li::before {
  content: '→';
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}


/* ============================================================
   11. PRICING
   ============================================================ */
.pricing {
  padding-block: var(--space-24);
}

.pricing__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-12);
  align-items: start;
}

.pricing-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.pricing-card:hover {
  border-color: var(--color-border-accent);
  transform: translateY(-4px);
}

.pricing-card--featured {
  background: linear-gradient(145deg, var(--color-bg-elevated), rgba(0,212,170,.06));
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

.pricing-card--featured:hover {
  border-color: var(--color-accent);
}

.pricing-card__popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-4);
  border-radius: 100px;
  white-space: nowrap;
}

.pricing-card__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.pricing-card__name {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-4);
}

.pricing-card__price {
  margin-bottom: var(--space-6);
}

.pricing-card__amount {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
}

.pricing-card__usd {
  display: block;
  font-size: var(--fs-sm);
  color: var(--color-text-faint);
  margin-top: var(--space-1);
}

.pricing-card__features {
  list-style: none;
  margin-bottom: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pricing-card__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.pricing-card__features li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}


/* ============================================================
   12. PROCESS
   ============================================================ */
.process {
  padding-block: var(--space-24);
  background: linear-gradient(180deg, transparent, rgba(11,35,64,.3), transparent);
}

.process__steps {
  margin-top: var(--space-12);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.process__step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-6);
  padding: var(--space-6);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base);
}

.process__step:hover { border-color: var(--color-border-accent); }

.process__step-num {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--color-accent-dim);
  background: linear-gradient(135deg, var(--color-accent) 0%, transparent 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 50px;
  line-height: 1;
  flex-shrink: 0;
}

.process__step-content h3 {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-2);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.process__step-content p {
  font-size: var(--fs-sm);
  line-height: 1.7;
}

.process__meet-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border-accent);
  border-radius: 100px;
  padding: 2px 10px;
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--color-accent);
  font-family: var(--font-body);
}


/* ============================================================
   13. DIFFERENTIATORS
   ============================================================ */
.differentiators {
  padding-block: var(--space-24);
}

.diff__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.diff__item {
  padding: var(--space-6);
  border-left: 2px solid var(--color-border);
  transition: border-color var(--transition-base);
}

.diff__item:hover {
  border-color: var(--color-accent);
}

.diff__icon {
  width: 40px;
  height: 40px;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.diff__icon svg {
  width: 100%;
  height: 100%;
}

.diff__item h3 {
  font-size: var(--fs-md);
  margin-bottom: var(--space-2);
}

.diff__item p {
  font-size: var(--fs-sm);
  line-height: 1.7;
}


/* ============================================================
   14. TESTIMONIALS
   ============================================================ */
.testimonials {
  padding-block: var(--space-24);
  background: linear-gradient(180deg, transparent, rgba(0,212,170,.03), transparent);
}

.testimonials__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.testimonial {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: border-color var(--transition-base);
}

.testimonial:hover { border-color: var(--color-border-accent); }

.testimonial__quote {
  font-style: italic;
  font-size: var(--fs-md);
  color: var(--color-text);
  line-height: 1.75;
  margin-bottom: var(--space-6);
  quotes: "\201C" "\201D";
  font-weight: 300;
}

.testimonial__quote::before {
  content: open-quote;
  color: var(--color-accent);
  font-size: 2em;
  line-height: 0;
  vertical-align: -0.4em;
  margin-right: 4px;
  font-style: normal;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

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

.testimonial__name {
  display: block;
  font-weight: 600;
  font-style: normal;
  color: var(--color-white);
  font-size: var(--fs-sm);
}

.testimonial__role {
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
}


/* ============================================================
   15. CONTACT & FORM
   ============================================================ */
.contact {
  padding-block: var(--space-24);
}

.contact__inner {
  display: grid;
  gap: var(--space-12);
}

.contact__copy .section-title {
  font-size: var(--fs-2xl);
}

.contact__copy p {
  margin-bottom: var(--space-8);
  line-height: 1.8;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.contact__detail .icon {
  color: var(--color-accent);
  flex-shrink: 0;
}

/* Form */
.contact-form {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-label span { color: var(--color-accent); }

.form-input {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
}

.form-input::placeholder { color: var(--color-text-faint); }

.form-input:hover { border-color: var(--color-text-faint); }

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}

.form-input.is-error {
  border-color: #ff6b6b;
  box-shadow: 0 0 0 3px rgba(255,107,107,.15);
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238ba3bf' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
  padding-right: 2.5rem;
}

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

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-error {
  display: block;
  font-size: var(--fs-xs);
  color: #ff6b6b;
  margin-top: var(--space-1);
  min-height: 1.2em;
}

/* Submit button states */
#submitBtn:disabled {
  opacity: .6;
  cursor: not-allowed;
  transform: none;
}

.form-feedback {
  margin-top: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  text-align: center;
}

.form-feedback.is-success {
  background: rgba(0,212,170,.1);
  border: 1px solid var(--color-border-accent);
  color: var(--color-accent);
}

.form-feedback.is-error {
  background: rgba(255,107,107,.1);
  border: 1px solid rgba(255,107,107,.3);
  color: #ff6b6b;
}


/* ============================================================
   16. FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12) var(--space-8);
  margin-top: var(--space-8);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-8);
}

.footer__brand {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.footer__brand .nav__logo-mark {
  width: 44px;
  height: 44px;
  font-size: var(--fs-base);
  flex-shrink: 0;
}

.footer__brand-name {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-md);
  color: var(--color-white);
}

.footer__tagline,
.footer__location {
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
  margin: 0;
}

.footer__links {
  display: flex;
  gap: var(--space-4);
}

.footer__social {
  font-size: var(--fs-sm);
  color: var(--color-text-faint);
  transition: color var(--transition-fast);
}

.footer__social:hover { color: var(--color-accent); }

.footer__bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: space-between;
  align-items: center;
}

.footer__copy {
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
}

.footer__divisions {
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
}


/* ============================================================
   17. WHATSAPP FLOAT
   EDITAR: número en script.js → variable WHATSAPP_NUMBER
   ============================================================ */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 999;
  width: 56px;
  height: 56px;
  background: #25d366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37,211,102,.5);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
}


/* ============================================================
   18. RESPONSIVE — BREAKPOINTS
   Mobile-first: mobile → tablet (640px) → desktop (1024px)
   ============================================================ */

/* --- Tablet (640px+) --- */
@media (min-width: 640px) {
  :root {
    --container-padding: var(--space-8);
  }

  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials__grid { grid-template-columns: repeat(2, 1fr); }
  .diff__grid { grid-template-columns: repeat(2, 1fr); }
  .pricing__grid { grid-template-columns: repeat(2, 1fr); }
}

/* --- Desktop (1024px+) --- */
@media (min-width: 1024px) {
  :root {
    --container-padding: var(--space-12);
    --nav-height: 80px;
  }

  h1 { font-size: var(--fs-4xl); }
  h2 { font-size: var(--fs-3xl); }

  /* Nav desktop */
  .nav__toggle { display: none; }
  .nav__menu {
    display: flex;
    position: static;
    background: transparent;
    padding: 0;
    border: none;
    margin-left: auto;
    flex-direction: row;
  }
  .nav__cta { display: inline-flex; }

  /* Hero two-column feel */
  .hero { padding-top: calc(var(--nav-height) + var(--space-16)); }
  .hero__mockup { margin-top: var(--space-20); }

  /* Grids */
  .why__grid { grid-template-columns: repeat(3, 1fr); }
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials__grid { grid-template-columns: repeat(3, 1fr); }
  .diff__grid { grid-template-columns: repeat(3, 1fr); }
  .pricing__grid { grid-template-columns: repeat(3, 1fr); }

  /* Contact two-col */
  .contact__inner { grid-template-columns: 1fr 1fr; align-items: start; }

  /* Process inline */
  .process__step { padding: var(--space-8); }
}

/* Mobile nav menu (open state) */
.nav__menu.is-open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(6,15,30,0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--space-6) var(--container-padding) var(--space-8);
  border-bottom: 1px solid var(--color-border);
  gap: 0;
}

.nav__menu.is-open .nav__link {
  padding: var(--space-4) 0;
  font-size: var(--fs-md);
  border-bottom: 1px solid var(--color-border);
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  html { scroll-behavior: auto; }
}