/* ================================================================
   NEXA LIMPIEZA PROFESIONAL — styles.css
   Branding: #2a5f5c (dark) · #cbe4c5 (light) · Fifties Variable
   Estilo: flat, sin sombras, sin bordes redondeados
   ================================================================ */

/* ── 1. FONT ─────────────────────────────────────────────────── */
@font-face {
  font-family: 'Fifties';
  src: url('fonts/FiftiesVariable.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ── 2. CUSTOM PROPERTIES ────────────────────────────────────── */
:root {
  --clr-primary:    #2a5f5c;
  --clr-secondary:  #cbe4c5;
  --clr-bg:         #f7faf7;
  --clr-surface:    #ffffff;
  --clr-light:      #eef5ec;
  --clr-border:     #d4e8d0;
  --clr-dark:       #1a1a1a;
  --clr-mid:        #4a5550;
  --clr-muted:      rgba(26,26,26,0.5);

  --ff: 'Fifties', system-ui, -apple-system, sans-serif;
  --fw-light:   300;
  --fw-regular: 400;
  --fw-medium:  500;
  --fw-bold:    700;

  --container:     1200px;
  --gap:           clamp(1.5rem, 3vw, 2.5rem);
  --section-pad:   clamp(4.5rem, 9vw, 8rem);
  --transition:    0.22s ease;
}

/* ── 3. RESET ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff);
  font-weight: var(--fw-regular);
  background: var(--clr-bg);
  color: var(--clr-dark);
  line-height: 1.6;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { font-family: var(--ff); }

/* ── 4. LAYOUT ───────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.125rem, 5vw, 2rem);
}
.section { padding: var(--section-pad) 0; }

/* ── 5. TYPOGRAPHY ───────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-weight: var(--fw-bold);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

/* ── 6. BUTTONS ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.875rem;
  font-family: var(--ff);
  font-weight: var(--fw-bold);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn svg { width: 20px; height: 20px; flex-shrink: 0; }

.btn--primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}
.btn--primary:hover {
  background: transparent;
  color: var(--clr-primary);
}

.btn--light {
  background: var(--clr-secondary);
  color: var(--clr-primary);
  border-color: var(--clr-secondary);
}
.btn--light:hover {
  background: transparent;
  color: var(--clr-secondary);
  border-color: var(--clr-secondary);
}

.btn--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.45);
}
.btn--ghost:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
}

.btn--outline-white {
  background: transparent;
  color: #fff;
  border-color: #fff;
}
.btn--outline-white:hover {
  background: #fff;
  color: var(--clr-primary);
}

.btn--lg { padding: 1.125rem 2.5rem; font-size: 0.9375rem; }

/* ── 7. SECTION HEADER ───────────────────────────────────────── */
.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto calc(var(--gap) * 1.5);
}
.section__tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.2em;
  color: var(--clr-primary);
  margin-bottom: 0.875rem;
}
.section__tag--light { color: var(--clr-secondary); }
.section__title {
  font-size: clamp(1.875rem, 4vw, 3rem);
  margin-bottom: 1rem;
}
.section__sub {
  font-size: 1.0625rem;
  color: var(--clr-mid);
  line-height: 1.75;
}

/* ── 8. NAV ──────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.375rem 0;
  transition: background-color var(--transition), padding var(--transition), border-bottom var(--transition);
}
.nav--scrolled {
  background: var(--clr-primary);
  padding: 0.875rem 0;
}
.nav__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #fff;
  flex-shrink: 0;
}
.nav__star {
  width: 16px; height: 16px;
  color: var(--clr-secondary);
}
.nav__logo-img {
  height: 42px;
  width: auto;
  display: block;
  flex-shrink: 0;
  filter: brightness(0) invert(1);
  transition: opacity var(--transition);
}
.nav__logo:hover .nav__logo-img { opacity: 0.85; }
.nav__wordmark {
  font-weight: var(--fw-bold);
  font-size: 1.1875rem;
  letter-spacing: 0.14em;
  color: #fff;
  line-height: 1.15;
}
.nav__wordmark-sub {
  display: block;
  font-size: 0.6rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.18em;
  color: var(--clr-secondary);
  text-transform: uppercase;
}
.nav__links {
  display: none;
  gap: 2rem;
  margin-left: auto;
}
.nav__links a {
  color: rgba(255,255,255,0.75);
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.nav__links a:hover { color: #fff; }
.nav__cta { margin-left: auto; flex-shrink: 0; }
.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
  flex-shrink: 0;
}
.nav__toggle span {
  display: block;
  width: 22px; height: 2px;
  background: #fff;
  transition: transform var(--transition), opacity var(--transition);
}
.nav__toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile full-screen menu */
.nav__links.is-open {
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: 0;
  background: var(--clr-primary);
  justify-content: center;
  align-items: center;
  gap: 2.5rem;
  z-index: 999;
  margin: 0;
}
.nav__links.is-open a {
  font-size: 1.625rem;
  letter-spacing: 0.08em;
  color: #fff;
}
.nav__links.is-open a:hover { color: var(--clr-secondary); }

@media (min-width: 768px) {
  .nav__links { display: flex; }
  .nav__toggle { display: none; }
  .nav__cta { margin-left: 0; }
}

/* ── 9. HERO ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; }
.hero__img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 40%;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    125deg,
    rgba(42,95,92,0.92) 0%,
    rgba(42,95,92,0.75) 45%,
    rgba(20,40,38,0.65) 100%
  );
}
.hero__content {
  position: relative;
  z-index: 1;
  padding-top: 7rem;
  padding-bottom: 5rem;
}
.hero__label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.2em;
  color: var(--clr-secondary);
  margin-bottom: 1.75rem;
}
.hero__title {
  font-size: clamp(3.25rem, 11vw, 7.5rem);
  font-weight: var(--fw-bold);
  color: #fff;
  line-height: 0.92;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}
.hero__title em {
  font-style: normal;
  color: var(--clr-secondary);
}
.hero__sub {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: rgba(255,255,255,0.82);
  max-width: 500px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-bottom: 2.75rem;
}
.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.14);
}
.hero__trust li {
  font-size: 0.8125rem;
  font-weight: var(--fw-medium);
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.04em;
}
.hero__scroll-hint {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
}
.hero__scroll-hint span {
  display: block;
  width: 1px; height: 52px;
  background: linear-gradient(to bottom, transparent 0%, rgba(255,255,255,0.45) 100%);
  animation: lineDown 2s ease-in-out infinite;
}
@keyframes lineDown {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  40%  { opacity: 1; }
  100% { transform: scaleY(1); transform-origin: top; opacity: 0; }
}

/* ── 10. STATS ───────────────────────────────────────────────── */
.stats {
  background: var(--clr-primary);
  padding: 3.5rem 0;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}
.stats__item {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}
.stats__val {
  display: flex;
  align-items: baseline;
  gap: 0.1em;
}
.stats__num {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: var(--fw-bold);
  color: var(--clr-secondary);
  line-height: 1;
}
.stats__suf {
  font-size: clamp(1rem, 2vw, 1.4rem);
  font-weight: var(--fw-bold);
  color: var(--clr-secondary);
}
.stats__lbl {
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
@media (min-width: 600px) {
  .stats__grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── 11. SERVICES ────────────────────────────────────────────── */
.services { background: var(--clr-bg); }
.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}
.service-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  overflow: hidden;
  transition: border-color var(--transition);
}
.service-card:hover { border-color: var(--clr-primary); }
.service-card__img-wrap {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--clr-light);
}
.service-card__img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.service-card:hover .service-card__img-wrap img { transform: scale(1.05); }
.service-card__body { padding: 1.75rem 2rem; }
.service-card__icon {
  display: block;
  font-size: 1.875rem;
  margin-bottom: 0.875rem;
}
.service-card__body h3 {
  font-size: 1.25rem;
  color: var(--clr-dark);
  margin-bottom: 0.75rem;
}
.service-card__body p {
  font-size: 0.9375rem;
  color: var(--clr-mid);
  line-height: 1.75;
  margin-bottom: 1.375rem;
}
.service-card__link {
  font-size: 0.75rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-primary);
  transition: letter-spacing var(--transition);
}
.service-card__link:hover { letter-spacing: 0.16em; }
@media (min-width: 600px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .services__grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── 12. WHY US ──────────────────────────────────────────────── */
.whyus { background: var(--clr-secondary); }
.whyus .section__title { color: var(--clr-primary); }
.whyus .section__tag { color: var(--clr-primary); }
.whyus__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}
.whyus__item {
  padding: 2.25rem 2rem;
  background: rgba(255,255,255,0.48);
  border: 1px solid rgba(42,95,92,0.12);
  border-top: 3px solid var(--clr-primary);
}
.whyus__num {
  font-size: 2.75rem;
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  opacity: 0.18;
  line-height: 1;
  margin-bottom: 1rem;
}
.whyus__item h3 {
  font-size: 1.1875rem;
  color: var(--clr-primary);
  margin-bottom: 0.75rem;
}
.whyus__item p {
  font-size: 0.9375rem;
  color: var(--clr-mid);
  line-height: 1.75;
}
@media (min-width: 600px) {
  .whyus__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .whyus__grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── 13. PROCESS ─────────────────────────────────────────────── */
.process { background: var(--clr-bg); }
.process__track {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 3.5rem;
  position: relative;
}
.process__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  flex: 1;
}
.process__bubble {
  width: 64px; height: 64px;
  background: var(--clr-primary);
  color: var(--clr-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.08em;
  flex-shrink: 0;
  z-index: 1;
}
.process__line {
  width: 2px;
  height: 48px;
  background: var(--clr-border);
  flex-shrink: 0;
}
.process__body {
  padding: 1.5rem 1rem 2rem;
  max-width: 280px;
}
.process__body h3 {
  font-size: 1.1875rem;
  color: var(--clr-primary);
  margin-bottom: 0.625rem;
}
.process__body p {
  font-size: 0.9375rem;
  color: var(--clr-mid);
  line-height: 1.75;
}
.process__cta { text-align: center; }

@media (min-width: 768px) {
  .process__track {
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
  }
  .process__step {
    flex-direction: column;
    align-items: center;
  }
  .process__line {
    position: absolute;
    width: 50%;
    height: 2px;
    top: 32px;
    left: 75%;
    background: var(--clr-border);
  }
  .process__step:last-child .process__line { display: none; }
  .process__body { padding: 1.5rem 0.5rem 0; }
}

/* ── 14. TESTIMONIALS ────────────────────────────────────────── */
.testimonials { background: var(--clr-light); }
.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}
.testimonial {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-left: 4px solid var(--clr-primary);
  padding: 2rem 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.testimonial__stars {
  color: #e6a817;
  font-size: 1rem;
  letter-spacing: 0.12em;
}
.testimonial p {
  font-size: 0.9375rem;
  color: var(--clr-mid);
  line-height: 1.8;
  flex-grow: 1;
  font-style: italic;
}
.testimonial footer {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-top: 1.125rem;
  border-top: 1px solid var(--clr-border);
}
.testimonial footer strong {
  font-size: 0.9375rem;
  color: var(--clr-dark);
  font-weight: var(--fw-bold);
  font-style: normal;
}
.testimonial footer span {
  font-size: 0.8125rem;
  color: var(--clr-muted);
}
@media (min-width: 768px) {
  .testimonials__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ── 15. FINAL CTA ───────────────────────────────────────────── */
.cta-final {
  background: var(--clr-primary);
  padding: var(--section-pad) 0;
}
.cta-final__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
}
.cta-final__inner h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: #fff;
  max-width: 600px;
}
.cta-final__inner > p {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.72);
  max-width: 480px;
}
.cta-final__phone {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.55) !important;
}
.cta-final__phone a {
  color: var(--clr-secondary);
  font-weight: var(--fw-bold);
}
.cta-final__phone a:hover { text-decoration: underline; }

/* ── 16. FOOTER ──────────────────────────────────────────────── */
.footer {
  background: #131a19;
  color: rgba(255,255,255,0.65);
  padding-top: var(--section-pad);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  padding-bottom: 3rem;
}
.footer__logo { color: #fff; }
.footer__logo .nav__logo-img { height: 46px; }
.footer__brand p {
  font-size: 0.9rem;
  line-height: 1.75;
  max-width: 260px;
  margin: 1.125rem 0 1.5rem;
}
.footer__social { display: flex; gap: 0.625rem; }
.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.6);
  transition: border-color var(--transition), color var(--transition);
}
.footer__social a:hover {
  border-color: var(--clr-secondary);
  color: var(--clr-secondary);
}
.footer__social svg { width: 18px; height: 18px; }
.footer__col h4 {
  font-size: 0.6875rem;
  font-weight: var(--fw-bold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1.125rem;
}
.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.footer__col li,
.footer__col a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer__col a:hover { color: var(--clr-secondary); }
.footer__barrios {
  display: grid !important;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem !important;
}
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 1.5rem 0;
}
.footer__bottom p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.35);
  text-align: center;
}
.footer__bottom a {
  color: rgba(255,255,255,0.45);
  transition: color var(--transition);
}
.footer__bottom a:hover { color: var(--clr-secondary); }
@media (min-width: 600px) {
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .footer__grid { grid-template-columns: 2fr 1fr 1fr 1.5fr; }
}

/* ── 17. WHATSAPP FLOAT ──────────────────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  background: #25D366;
  color: #fff;
  padding: 0.875rem 1.375rem 0.875rem 1rem;
  font-family: var(--ff);
  font-weight: var(--fw-bold);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background var(--transition), transform var(--transition);
  animation: waPulse 3s ease-in-out infinite;
}
.whatsapp-float svg { width: 24px; height: 24px; flex-shrink: 0; }
.whatsapp-float__label { display: none; }
.whatsapp-float:hover {
  background: #128C7E;
  transform: translateY(-2px);
}
@keyframes waPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37,211,102,0.45); }
  60%       { box-shadow: 0 0 0 14px rgba(37,211,102,0); }
}
@media (min-width: 480px) {
  .whatsapp-float__label { display: inline; }
}

/* ── 18. SCROLL ANIMATIONS ───────────────────────────────────── */
.animate {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.animate.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.animate[data-delay="80"]  { transition-delay: 0.08s; }
.animate[data-delay="100"] { transition-delay: 0.10s; }
.animate[data-delay="150"] { transition-delay: 0.15s; }
.animate[data-delay="160"] { transition-delay: 0.16s; }
.animate[data-delay="200"] { transition-delay: 0.20s; }
.animate[data-delay="240"] { transition-delay: 0.24s; }
.animate[data-delay="300"] { transition-delay: 0.30s; }
.animate[data-delay="400"] { transition-delay: 0.40s; }

/* ── 19. MISC ────────────────────────────────────────────────── */
/* WhatsApp button hover ripple */
.btn--wa { position: relative; overflow: hidden; }
.btn--wa::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  opacity: 0;
  transition: opacity var(--transition);
}
.btn--wa:hover::after { opacity: 1; }

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--clr-secondary);
  outline-offset: 3px;
}