/* ============================================================
   LABORATORIO NATIVIDAD — Main Stylesheet
   Colores reales: naranja #f26202 (primario)
   ============================================================ */

:root {
  /* Colors — basados en el sitio real */
  --color-primary:        #f26202;
  --color-primary-dark:   #d45500;
  --color-primary-light:  #ff8a3d;
  --color-secondary:      #1a3a5c;
  --color-secondary-light:#2a5480;
  --color-accent:         #e8f4fd;
  --color-dark:           #0f1f2e;
  --color-dark-2:         #1a2e40;
  --color-text:           #4a5568;
  --color-text-light:     #718096;
  --color-white:          #ffffff;
  --color-bg:             #f8f9f9;
  --color-bg-alt:         #eef2f7;
  --color-border:         #e2e8f0;

  --font-heading: 'Poppins', sans-serif;
  --font-body:    'Inter', sans-serif;

  --section-py:   96px;
  --container-w:  1200px;
  --container-px: 24px;

  --transition:      0.3s ease;
  --transition-slow: 0.6s ease;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.07);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.11);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);

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

  --header-h: 72px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  font-size: 16px;
}

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

img       { display: block; max-width: 100%; height: auto; }
a         { color: inherit; text-decoration: none; transition: color var(--transition); }
ul        { list-style: none; }
button    { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

/* ---- Layout ---- */
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--container-px);
}

.section       { padding: var(--section-py) 0; }
.section--alt  { background: var(--color-bg); }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  background: rgba(242, 98, 2, 0.1);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1.2;
  margin-bottom: 18px;
}

.section-desc {
  color: var(--color-text-light);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 24px rgba(242, 98, 2, 0.32);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 8px 32px rgba(242, 98, 2, 0.45);
  transform: translateY(-2px);
  color: var(--color-white);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.65);
}
.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.btn--full    { width: 100%; justify-content: center; }

.btn__spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn.loading .btn__spinner { display: block; }
.btn.loading i, .btn.loading span { opacity: 0.7; }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: background var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: var(--color-white);
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-white);
  flex-shrink: 0;
}
.nav__logo img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  padding: 4px;
}
.header.scrolled .nav__logo { color: var(--color-secondary); }

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav__link {
  padding: 8px 15px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 500;
  color: rgba(255,255,255,0.92);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}

.nav__link:hover, .nav__link.active {
  background: rgba(255,255,255,0.15);
  color: var(--color-white);
}

.header.scrolled .nav__link             { color: var(--color-text); }
.header.scrolled .nav__link:hover,
.header.scrolled .nav__link.active      {
  background: rgba(242,98,2,0.1);
  color: var(--color-primary);
}

.nav__chevron {
  font-size: 0.68rem;
  transition: transform var(--transition);
}

/* CTA link */
.nav__cta {
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  font-weight: 700;
  margin-left: 8px;
  box-shadow: 0 2px 16px rgba(242,98,2,0.3);
}
.nav__cta:hover {
  background: var(--color-primary-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(242,98,2,0.4);
}

/* Dropdown */
.nav__item--dropdown { position: relative; }

.nav__dropdown {
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 210px;
  padding: 8px 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 100;
  border: 1px solid var(--color-border);
}

.nav__dropdown.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* Chevron rotation se maneja desde JS para evitar conflictos con el delay */

.nav__dropdown li a {
  display: block;
  padding: 10px 20px;
  font-size: 0.875rem;
  color: var(--color-text);
  transition: all var(--transition);
  font-weight: 500;
}
.nav__dropdown li a:hover {
  background: rgba(242,98,2,0.08);
  color: var(--color-primary);
  padding-left: 26px;
}

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}
.header.scrolled .nav__toggle span { background: var(--color-secondary); }
.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15, 31, 46, 0.90) 0%,
    rgba(26, 58, 92, 0.82) 50%,
    rgba(242, 98, 2, 0.30) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 140px var(--container-px) 100px;
  max-width: 820px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(242,98,2,0.2);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(242,98,2,0.4);
  color: #ffb380;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  margin-bottom: 28px;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 7vw, 4.8rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.08;
  margin-bottom: 24px;
}

.hero__title--accent {
  color: var(--color-primary-light);
}

.hero__desc {
  color: rgba(255,255,255,0.82);
  font-size: clamp(1rem, 2vw, 1.15rem);
  max-width: 580px;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero__trust {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.75);
  font-size: 0.88rem;
  font-weight: 500;
}

.hero__trust-item i {
  color: var(--color-primary-light);
  font-size: 1rem;
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.hero__scroll a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid rgba(255,255,255,0.35);
  border-radius: 50%;
  color: rgba(255,255,255,0.7);
  animation: bounceY 2s ease-in-out infinite;
}
.hero__scroll a:hover { border-color: var(--color-primary-light); color: var(--color-primary-light); }

/* ============================================================
   STATS BANNER
   ============================================================ */
.stats-banner {
  background: var(--color-secondary);
  padding: 32px 0;
}

.stats-banner__grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.stats-banner__item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 48px;
  text-align: left;
  color: var(--color-white);
}

.stats-banner__item span {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--color-primary-light);
  line-height: 1;
}

.stats-banner__item p {
  font-size: 0.82rem;
  line-height: 1.4;
  opacity: 0.75;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stats-banner__item p strong {
  display: block;
  color: var(--color-white);
  opacity: 1;
  font-size: 0.9rem;
}

.stats-banner__divider {
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.2);
  flex-shrink: 0;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about__images { position: relative; }

.about__img-main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}
.about__img-main img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.about__img-main:hover img { transform: scale(1.04); }

.about__img-secondary {
  position: absolute;
  bottom: -36px;
  right: -28px;
  width: 52%;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 5px solid var(--color-white);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}
.about__img-secondary img { width: 100%; height: 100%; object-fit: cover; }

.about__badge-floating {
  position: absolute;
  top: -20px;
  left: -20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 32px rgba(242,98,2,0.4);
  z-index: 1;
}
.about__badge-floating i    { font-size: 2rem; }
.about__badge-floating span { font-weight: 800; font-size: 1.05rem; line-height: 1.3; }

.about__content { padding-bottom: 36px; }

.about__lead {
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--color-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about__content p { color: var(--color-text-light); margin-bottom: 14px; line-height: 1.8; }

.about__list {
  margin: 24px 0 32px;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.about__list li {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  font-size: 0.95rem;
  color: var(--color-text);
}
.about__list li i { color: var(--color-primary); font-size: 1.05rem; flex-shrink: 0; margin-top: 3px; }

/* ============================================================
   SERVICES
   ============================================================ */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.service-card--wide {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: flex-start;
  gap: 32px;
}
.service-card--wide .service-card__icon { flex-shrink: 0; }
.service-card--wide .service-content { display: flex; flex-direction: column; flex: 1; }

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transform: scaleX(0);
  transition: transform var(--transition);
}

.service-card:hover {
  border-color: rgba(242,98,2,0.2);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.service-card:hover::before { transform: scaleX(1); }

.service-card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  background: rgba(242,98,2,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: 20px;
  transition: all var(--transition);
}
.service-card:hover .service-card__icon {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.08) rotate(4deg);
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 12px;
}

.service-card p {
  color: var(--color-text-light);
  font-size: 0.92rem;
  line-height: 1.7;
  flex: 1;
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
}
.service-card__link i { transition: transform var(--transition); }
.service-card__link:hover i { transform: translateX(4px); }

/* ============================================================
   GALLERY
   ============================================================ */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 280px);
  gap: 16px;
}

.gallery__item {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.gallery__item--large { grid-column: 1/2; grid-row: 1/3; }

.gallery__item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(242,98,2,0.82), rgba(26,58,92,0.78));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #fff;
  opacity: 0;
  transition: opacity var(--transition);
}
.gallery__overlay i    { font-size: 1.8rem; }
.gallery__overlay span { font-weight: 600; font-size: 0.88rem; }

.gallery__item:hover img              { transform: scale(1.08); }
.gallery__item:hover .gallery__overlay { opacity: 1; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
  align-items: start;
}

.contact__info {
  background: linear-gradient(160deg, var(--color-secondary), var(--color-secondary-light));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 48px 36px;
}
.contact__info h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.contact__info > p {
  opacity: 0.8;
  margin-bottom: 32px;
  font-size: 0.92rem;
  line-height: 1.7;
}

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 22px;
}
.contact__icon {
  width: 42px;
  height: 42px;
  background: rgba(255,255,255,0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.95rem;
}
.contact__item > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.contact__item strong {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.65;
}
.contact__item span, .contact__item a {
  font-size: 0.92rem;
  opacity: 0.92;
  line-height: 1.5;
}
.contact__item a:hover { opacity: 1; text-decoration: underline; color: #fff; }

.contact__social {
  display: flex;
  gap: 10px;
  margin-top: 32px;
}
.social-link {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
  transition: all var(--transition);
}
.social-link:hover {
  background: var(--color-primary);
  transform: translateY(-3px);
  color: #fff;
}

/* Form */
.contact__form-wrap {
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  box-shadow: var(--shadow-sm);
}

.contact-form .form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.form__group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-secondary);
}
.form__group input,
.form__group textarea,
.form__group select {
  padding: 12px 15px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: all var(--transition);
  width: 100%;
}
.form__group input:focus,
.form__group textarea:focus,
.form__group select:focus {
  border-color: var(--color-primary);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(242,98,2,0.1);
}
.form__group input.error,
.form__group textarea.error,
.form__group select.error {
  border-color: #e53e3e;
  background: #fff5f5;
}
.form__group textarea { resize: vertical; min-height: 140px; }
.form__error { font-size: 0.78rem; color: #e53e3e; min-height: 14px; }

.form__success, .form__error-msg {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  margin-top: 18px;
  font-size: 0.88rem;
}
.form__success { background: #f0fff4; border: 1px solid #9ae6b4; color: #276749; }
.form__success i { color: #38a169; font-size: 1.4rem; flex-shrink: 0; }
.form__error-msg { background: #fff5f5; border: 1px solid #feb2b2; color: #c53030; }
.form__error-msg i { color: #e53e3e; font-size: 1.4rem; flex-shrink: 0; }
.form__success strong, .form__error-msg strong { display: block; margin-bottom: 4px; }
.form__success p, .form__error-msg p { margin: 0; opacity: 0.85; }
.form__success[hidden], .form__error-msg[hidden] { display: none !important; }

/* ============================================================
   MAP
   ============================================================ */
.map-section { height: 400px; }
.map-section iframe { width: 100%; height: 100%; border: none; display: block; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--color-dark); color: rgba(255,255,255,0.7); }

.footer__main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.6fr;
  gap: 48px;
  padding: 76px 0 56px;
}

.footer__brand img {
  width: 50px; height: 50px;
  object-fit: contain;
  margin-bottom: 18px;
  background: rgba(255,255,255,0.1);
  padding: 7px;
  border-radius: var(--radius-sm);
}
.footer__brand p { font-size: 0.875rem; line-height: 1.8; margin-bottom: 22px; }

.footer__social { display: flex; gap: 10px; }
.footer__social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  transition: all var(--transition);
}
.footer__social a:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-3px);
}

.footer__col h4 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.footer__col ul { display: flex; flex-direction: column; gap: 9px; }
.footer__col ul li a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  transition: all var(--transition);
}
.footer__col ul li a:hover { color: var(--color-primary-light); padding-left: 4px; }

.footer__contact-list { gap: 12px !important; }
.footer__contact-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.85rem; }
.footer__contact-list li i { color: var(--color-primary-light); width: 14px; flex-shrink: 0; margin-top: 3px; }
.footer__contact-list li a { color: rgba(255,255,255,0.6); }
.footer__contact-list li a:hover { color: var(--color-primary-light); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 22px 0;
}
.footer__bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer__bottom p { font-size: 0.82rem; color: rgba(255,255,255,0.45); }

/* ============================================================
   FLOATING ELEMENTS
   ============================================================ */
.whatsapp-float {
  position: fixed;
  bottom: 88px; right: 28px;
  z-index: 800;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37,211,102,0.45);
  transition: all var(--transition);
}
.whatsapp-float:hover {
  background: #128C7E;
  transform: scale(1.1);
  color: #fff;
}
.whatsapp-float__tooltip {
  position: absolute;
  right: 68px;
  background: var(--color-dark);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.whatsapp-float:hover .whatsapp-float__tooltip { opacity: 1; }

.back-to-top {
  position: fixed;
  bottom: 28px; right: 28px;
  z-index: 800;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
  transition: all var(--transition);
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-3px); }

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox {
  position: fixed; inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.93);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.lightbox[hidden] { display: none !important; }

.lightbox__img-wrap { max-width: 900px; width: 100%; text-align: center; }
.lightbox__img-wrap img {
  max-height: 80vh;
  border-radius: var(--radius-md);
  object-fit: contain;
  display: inline-block;
}
.lightbox__img-wrap p { color: rgba(255,255,255,0.65); margin-top: 12px; font-size: 0.88rem; }

.lightbox__close, .lightbox__prev, .lightbox__next {
  position: absolute;
  color: #fff;
  font-size: 1.3rem;
  padding: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  transition: background var(--transition);
}
.lightbox__close:hover, .lightbox__prev:hover, .lightbox__next:hover { background: rgba(255,255,255,0.2); }
.lightbox__close { top: 20px; right: 20px; }
.lightbox__prev  { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox__next  { right: 20px; top: 50%; transform: translateY(-50%); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes bounceY {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-fade-up { opacity: 0; animation: fadeUp 0.8s ease forwards; }
.animate-fade-up:nth-child(1) { animation-delay: 0.1s; }
.animate-fade-up:nth-child(2) { animation-delay: 0.25s; }
.animate-fade-up:nth-child(3) { animation-delay: 0.4s; }
.animate-fade-up:nth-child(4) { animation-delay: 0.55s; }
.animate-fade-up:nth-child(5) { animation-delay: 0.7s; }

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* Stagger */
.features__grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.features__grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.features__grid .reveal:nth-child(4) { transition-delay: 0.3s; }
.services__grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.services__grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.services__grid .reveal:nth-child(4) { transition-delay: 0.15s; }
.gallery__grid  .reveal:nth-child(2) { transition-delay: 0.1s; }
.gallery__grid  .reveal:nth-child(3) { transition-delay: 0.2s; }
.gallery__grid  .reveal:nth-child(4) { transition-delay: 0.3s; }
.gallery__grid  .reveal:nth-child(5) { transition-delay: 0.4s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  :root { --section-py: 76px; }
  .about__grid    { grid-template-columns: 1fr; gap: 80px; }
  .about__images  { max-width: 540px; margin: 0 auto; }
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .service-card--wide { grid-column: auto; flex-direction: column; }
  .footer__main   { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer__brand  { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  :root { --section-py: 60px; --header-h: 64px; }

  .nav__toggle { display: flex; }

  .nav__menu {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-white);
    padding: 12px 20px 24px;
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
    gap: 2px;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .nav__menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }

  .nav__link { color: var(--color-text) !important; padding: 12px 14px; }
  .nav__link:hover, .nav__link.active {
    background: rgba(242,98,2,0.08) !important;
    color: var(--color-primary) !important;
  }
  .nav__cta {
    background: var(--color-primary) !important;
    color: var(--color-white) !important;
    margin-left: 0; margin-top: 6px;
    text-align: center;
  }

  /* Dropdown mobile */
  .nav__item--dropdown .nav__dropdown {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    margin-top: 4px;
    display: none;
  }
  .nav__item--dropdown.open .nav__dropdown { display: block; }
  .nav__dropdown li a { padding: 10px 24px; }

  /* Hero */
  .hero__content { padding: 120px 20px 90px; }
  .hero__actions { flex-direction: column; align-items: flex-start; }
  .hero__trust   { flex-direction: column; gap: 14px; }

  /* Stats banner */
  .stats-banner__grid { flex-direction: column; gap: 0; }
  .stats-banner__item { width: 100%; justify-content: center; padding: 14px 24px; }
  .stats-banner__divider { width: 80%; height: 1px; margin: 0 auto; }

  /* About */
  .about__img-secondary { display: none; }
  .about__badge-floating { top: -16px; left: 16px; }

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

  /* Gallery */
  .gallery__grid { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
  .gallery__item--large { grid-column: 1/-1; height: 250px; }
  .gallery__item        { height: 190px; }

  /* Contact */
  .contact__grid { grid-template-columns: 1fr; gap: 28px; }
  .contact__form-wrap { padding: 32px 24px; }
  .contact-form .form__row { grid-template-columns: 1fr; }

  /* Footer */
  .footer__main { grid-template-columns: 1fr; gap: 32px; padding: 56px 0 40px; }
  .footer__brand { grid-column: auto; }
  .footer__bottom .container { flex-direction: column; text-align: center; }

  /* Map */
  .map-section { height: 280px; }
}

@media (max-width: 480px) {
  :root { --section-py: 52px; }
  .hero__title { font-size: 2.2rem; }
  .gallery__grid { grid-template-columns: 1fr; }
  .gallery__item--large, .gallery__item { height: 200px; }
  .contact__info  { padding: 28px 22px; }
  .whatsapp-float { bottom: 80px; right: 18px; }
  .back-to-top    { right: 18px; bottom: 18px; }
}