/* ==========================================================================
   RC Automação e Engenharia — Design tokens
   ========================================================================== */
:root {
  --color-primary: #0B2545;
  --color-primary-2: #003A66;
  --color-primary-dark: #071B33;
  --color-primary-light: #0F3A6B;
  --color-accent: #FFCC00;
  --color-accent-dark: #E0A800;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F4F7FB;
  --color-text: #1E2A38;
  --color-text-light: #5B6B7C;
  --color-text-on-dark: #E7EDF5;
  --color-text-on-dark-muted: #A9B8CB;
  --color-border: #E3E9F1;
  --color-whatsapp: #25D366;

  --font-heading: 'Roboto', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Roboto', 'Segoe UI', Arial, sans-serif;

  --container-w: 1180px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 2px 10px rgba(11, 37, 69, 0.08);
  --shadow-md: 0 10px 30px rgba(11, 37, 69, 0.12);
  --shadow-lg: 0 20px 50px rgba(11, 37, 69, 0.18);
  --transition: 0.25s ease;
  --header-h: 78px;
}

/* ==========================================================================
   Reset & Strict Layout Lock (Zero Horizontal Overflow Guarantee)
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden !important;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden !important;
  position: relative;
  margin: 0;
  padding: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

section[id], .hero[id] {
  scroll-margin-top: var(--header-h);
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}

body, h1, h2, h3, h4, p, ul, li, figure {
  margin: 0;
  padding: 0;
}

ul { list-style: none; }

img, svg, video, iframe {
  max-width: 100%;
  height: auto;
}
img { display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

svg:not([width]):not([height]) {
  display: block;
}
svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  visibility: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  font-weight: 700;
  overflow-wrap: break-word;
  word-break: break-word;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

/* Accessible screen-reader skip link */
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link:focus {
  position: fixed;
  top: 10px;
  left: 10px;
  width: auto;
  height: auto;
  clip: auto;
  white-space: normal;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 10px 16px;
  z-index: 2000;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
  max-width: 100%;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--accent {
  background: var(--color-accent);
  color: var(--color-primary);
}
.btn--accent:hover { background: var(--color-accent-dark); }

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

.btn--ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; }

.btn--sm { padding: 10px 18px; font-size: 0.85rem; }
.btn--lg { padding: 16px 32px; font-size: 1rem; }
.btn--block { width: 100%; }

/* ==========================================================================
   Section shell / typography helpers
   ========================================================================== */
.section { padding: 96px 0; width: 100%; max-width: 100%; overflow: hidden; }
.section--alt { background: var(--color-bg-alt); }
.section--dark {
  background: linear-gradient(160deg, var(--color-primary-dark), var(--color-primary-2));
  color: var(--color-text-on-dark);
}

.section__head { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.section__title { font-size: clamp(1.7rem, 3vw, 2.4rem); margin: 10px 0 14px; }
.section__title--light { color: #fff; }
.section__lead { color: var(--color-text-light); font-size: 1.05rem; }
.section__lead--light { color: var(--color-text-on-dark-muted); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
}
.eyebrow::before {
  content: '';
  width: 26px;
  height: 3px;
  background: var(--color-accent-dark);
  flex-shrink: 0;
}
.section__head .eyebrow { justify-content: center; }
.eyebrow--light { color: var(--color-accent); }
.eyebrow--light::before { background: var(--color-accent); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  width: 100%;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: box-shadow var(--transition), background var(--transition), height var(--transition);
}
.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
  height: 66px;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 100%;
}

.header__brand { display: flex; align-items: center; height: 100%; }
.header__logo { height: 42px; width: auto; max-width: 100%; object-fit: contain; }

.nav__list {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav__link {
  position: relative;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-primary);
  padding: 6px 2px;
}
.nav__link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}
.nav__link:hover::after, .nav__link.is-active::after { width: 100%; }

.header__actions { display: flex; align-items: center; gap: 16px; }
.header__cta { flex-shrink: 0; }

.nav__toggle {
  display: none;
  color: var(--color-primary);
  padding: 6px;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: clamp(680px, 100vh, 920px);
  min-height: clamp(680px, 100svh, 920px);
  color: #fff;
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  background: var(--color-primary-dark);
}

.hero__slider {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
}

.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}

.hero__slide--cftv { --hero-image: url("../img/carousel/cftv.png?v=20260730-1"); }
.hero__slide--redes { --hero-image: url("../img/carousel/redes-comunicacao.png?v=20260730-1"); }
.hero__slide--cabeamento { --hero-image: url("../img/carousel/cabeamento-estruturado.png?v=20260730-1"); }
.hero__slide--switches { --hero-image: url("../img/carousel/switches.png?v=20260730-1"); }
.hero__slide--Redes { --hero-image: url("../img/carousel/switches.png?v=20260730-1"); }
.hero__slide--automacao { --hero-image: url("../img/carousel/ti-automacao.png?v=20260730-1"); }
.hero__slide--ia { --hero-image: url("../img/carousel/ia-video-analitico.png?v=20260807-1"); }
.hero__slide--eletrica { --hero-image: url("../img/carousel/eletrica-paineis.png?v=20260807-1"); }

.hero__slide::before,
.hero__slide::after {
  content: "";
  position: absolute;
  inset: 0;
}

.hero__slide::before {
  background-image: var(--hero-image);
  background-size: cover;
  background-position: center;
  transform: scale(1.035);
  transition: transform 6s ease-out;
}

.hero__slide::after {
  background:
    linear-gradient(90deg,
      rgba(3, 18, 34, 0.96) 0%,
      rgba(3, 24, 45, 0.9) 31%,
      rgba(4, 37, 65, 0.52) 52%,
      rgba(4, 37, 65, 0.08) 76%),
    linear-gradient(180deg, rgba(0, 14, 27, 0.18), rgba(0, 14, 27, 0.38));
}

.hero__slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
}

.hero__slide.is-active::before {
  transform: scale(1);
}

.hero__slide-inner {
  position: relative;
  z-index: 2;
  min-height: clamp(680px, 100vh, 920px);
  min-height: clamp(680px, 100svh, 920px);
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-h) + 44px);
  padding-bottom: 104px;
}

.hero__dots {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 9px;
  z-index: 10;
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(3, 18, 34, 0.52);
  backdrop-filter: blur(10px);
}

.hero__dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  transition: width 0.25s ease, background 0.25s ease, transform 0.25s ease;
  padding: 0;
  cursor: pointer;
}

.hero__dot.is-active,
.hero__dot:hover {
  background: var(--color-accent);
  width: 28px;
}

.hero__dot:focus-visible,
.hero__control:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
}

.hero__control {
  position: absolute;
  top: 50%;
  z-index: 10;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  color: #fff;
  background: rgba(3, 18, 34, 0.5);
  backdrop-filter: blur(8px);
  transform: translateY(-50%);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.hero__control span {
  display: block;
  font-size: 2.25rem;
  line-height: 0.8;
  transform: translateY(-2px);
}

.hero__control:hover {
  color: var(--color-primary-dark);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.hero__control--prev { left: 24px; }
.hero__control--next { right: 24px; }

.hero__content {
  max-width: 660px;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.45s ease 0.18s, transform 0.45s ease 0.18s;
}

.hero__slide.is-active .hero__content {
  opacity: 1;
  transform: translateY(0);
}

.hero__title {
  color: #fff;
  font-size: clamp(2rem, 4.5vw, 3.65rem);
  max-width: 650px;
  margin: 18px 0 20px;
  text-wrap: balance;
}

.hero__subtitle {
  font-size: clamp(1rem, 1.7vw, 1.16rem);
  color: #d7e1ec;
  max-width: 590px;
  margin-bottom: 34px;
}

.hero__cta-group { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 30px; }

.hero__note {
  font-size: 0.92rem;
  color: var(--color-text-on-dark-muted);
  border-left: 2px solid var(--color-accent-dark);
  padding-left: 14px;
  max-width: 480px;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ==========================================================================
   About
   ========================================================================== */
.about__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 64px;
  align-items: center;
}

.about__media-card {
  background: #f4f7fb;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  position: relative;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.about__icon-mark { width: 100%; max-width: 220px; }

.about__content .section__lead { margin-bottom: 16px; }
.about__content p { color: var(--color-text-light); margin-bottom: 16px; }

.about__values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}
.about__values li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  min-width: 0;
}
.about__values li > div { min-width: 0; }
.about__values svg { color: var(--color-accent-dark); flex-shrink: 0; margin-top: 2px; }
.about__values strong { display: block; color: var(--color-primary); font-size: 0.98rem; margin-bottom: 3px; }
.about__values span { font-size: 0.88rem; color: var(--color-text-light); }

/* ==========================================================================
   Services (Nossa Cartela de Serviços - Strict Grid Locking)
   ========================================================================== */
#servicos {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  min-width: 0;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
  overflow-wrap: break-word;
  word-break: break-word;
}
.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-color: var(--color-primary-2);
}
.service-card__icon {
  width: 54px; height: 54px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  flex-shrink: 0;
}
.service-card h3 {
  font-size: 1.08rem;
  margin-bottom: 10px;
  overflow-wrap: break-word;
  word-break: break-word;
}
.service-card p {
  color: var(--color-text-light);
  font-size: 0.93rem;
  text-align: justify;
  text-justify: inter-word;
  overflow-wrap: break-word;
  word-break: break-word;
}
.service-card--wide {
  grid-column: span 2;
}
.service-card--wide p { max-width: 640px; }

/* ==========================================================================
   Portfolio
   ========================================================================== */
.portfolio__filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 9px 20px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-text-light);
  transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--color-accent-dark); color: var(--color-primary); }
.filter-btn.is-active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.portfolio-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: opacity var(--transition), transform var(--transition);
  min-width: 0;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.portfolio-card.is-hidden { display: none; }

.portfolio-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-alt);
}
.portfolio-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.portfolio-card:hover .portfolio-card__media img { transform: scale(1.05); }

.portfolio-card figcaption {
  padding: 18px 20px 20px;
  background: #fff;
}
.portfolio-card__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: 6px;
}
.portfolio-card h3 { font-size: 1rem; color: var(--color-primary); }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 60px;
  align-items: start;
  width: 100%;
  max-width: 100%;
}

@media (min-width: 1025px) {
  .contact__inner {
    max-width: 1080px;
    margin-inline: auto;
  }
}

.contact__list { margin: 32px 0; display: flex; flex-direction: column; gap: 20px; }
.contact__list li { display: flex; gap: 14px; align-items: flex-start; min-width: 0; }
.contact__list li > div { min-width: 0; }
.contact__list svg { color: var(--color-accent); flex-shrink: 0; margin-top: 2px; }
.contact__list strong { display: block; font-size: 0.95rem; margin-bottom: 2px; color: #fff; }
.contact__list span { font-size: 0.9rem; color: var(--color-text-on-dark-muted); }

.contact__map {
  margin-top: 32px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  filter: grayscale(0.1);
  width: 100%;
  max-width: 100%;
}
.contact__map iframe {
  display: block;
  width: 100%;
  max-width: 100%;
  border: 0;
}

.contact-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  color: var(--color-text);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.contact-form h3 { margin-bottom: 22px; font-size: 1.3rem; }

.form-row { margin-bottom: 18px; display: flex; flex-direction: column; gap: 7px; width: 100%; }
.form-row--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  width: 100%;
}
.form-row--split > div { display: flex; flex-direction: column; gap: 7px; min-width: 0; }

.form-row label { font-size: 0.85rem; font-weight: 600; color: var(--color-primary); }
.form-row label span { color: var(--color-accent-dark); }

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  max-width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  font-size: 0.94rem;
  transition: border-color var(--transition), background var(--transition);
  resize: vertical;
  box-sizing: border-box;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent-dark);
  background: #fff;
}

.form-error {
  display: none;
  font-size: 0.78rem;
  color: #D64545;
}
.form-row.has-error input,
.form-row.has-error select,
.form-row.has-error textarea { border-color: #D64545; }
.form-row.has-error .form-error { display: block; }

.form-note {
  margin-top: 14px;
  font-size: 0.86rem;
  text-align: center;
  min-height: 1.2em;
  color: var(--color-primary);
}
.form-note.is-success { color: #1a8f4c; font-weight: 600; }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--color-primary-dark);
  color: var(--color-text-on-dark-muted);
  padding-top: 70px;
  width: 100%;
  overflow: hidden;
}
.footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  width: 100%;
}
.footer__logo { height: 40px; width: auto; max-width: 100%; margin-bottom: 16px; object-fit: contain; }
.footer__brand p { font-size: 0.9rem; line-height: 1.7; margin-bottom: 20px; }

.footer__social { display: flex; gap: 12px; }
.footer__social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.footer__social a:hover { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-primary); transform: translateY(-3px); }

.footer__col h4 { color: #fff; font-size: 0.98rem; margin-bottom: 18px; }
.footer__col ul { display: flex; flex-direction: column; gap: 11px; }
.footer__col li { font-size: 0.88rem; }
.footer__col a:hover { color: var(--color-accent); }

.footer__bottom-inner {
  padding: 22px 20px;
  text-align: center;
  font-size: 0.82rem;
}

/* ==========================================================================
   Floating buttons
   ========================================================================== */
.float-whatsapp {
  position: fixed;
  right: 20px; bottom: 20px;
  width: 58px; height: 58px;
  background: var(--color-whatsapp);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4);
  z-index: 900;
  animation: pulse-wa 2.6s infinite;
}
.float-whatsapp:hover { transform: scale(1.07); }

@keyframes pulse-wa {
  0% { box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4), 0 0 0 0 rgba(37, 211, 102, 0.4); }
  70% { box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4), 0 0 0 12px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4), 0 0 0 0 rgba(37, 211, 102, 0); }
}

.back-to-top {
  position: fixed;
  right: 20px; bottom: 90px;
  width: 44px; height: 44px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-light); }

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-whatsapp { animation: none; }
  .hero__slide,
  .hero__slide::before,
  .hero__content { transition: none; }
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .nav__list { gap: 20px; }
  .about__inner { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .about__media-card { max-width: 360px; margin: 0 auto; padding: 40px 24px; }
  
  .services-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .portfolio-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  
  .contact__inner { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 24px; }
}

@media (max-width: 992px) {
  :root { --header-h: 70px; }

  /* Mobile Nav Menu Fix */
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    width: 100%;
    height: calc(100vh - var(--header-h));
    height: calc(100dvh - var(--header-h));
    background: #fff;
    padding: 30px 24px;
    transform: translateX(100%);
    transition: transform var(--transition), visibility var(--transition);
    visibility: hidden;
    pointer-events: none;
    overflow-y: auto;
    box-shadow: var(--shadow-md);
  }
  .nav.is-open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }
  .nav__list { flex-direction: column; align-items: flex-start; gap: 4px; }
  .nav__link { display: block; width: 100%; padding: 14px 4px; font-size: 1.05rem; border-bottom: 1px solid var(--color-border); }

  .header__cta { display: none; }
  .nav__toggle { display: flex; }

  .hero__control--prev { left: 12px; }
  .hero__control--next { right: 12px; }
  .hero__content { max-width: 600px; }

  /* Services Grid single column lock on tablets / mobile */
  .services-grid { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .service-card--wide { grid-column: span 1; }
  .service-card--wide p { max-width: 100%; }
  
  .portfolio-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about__values { grid-template-columns: minmax(0, 1fr); }
  .form-row--split { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .hero,
  .hero__slide-inner {
    min-height: 760px;
    min-height: max(760px, 100svh);
  }
  .hero__slide::before {
    background-position: 64% center;
  }
  .hero__slide::after {
    background:
      linear-gradient(180deg,
        rgba(3, 18, 34, 0.78) 0%,
        rgba(3, 18, 34, 0.91) 52%,
        rgba(3, 18, 34, 0.98) 100%),
      linear-gradient(90deg, rgba(3, 18, 34, 0.72), rgba(3, 18, 34, 0.12));
  }
  .hero__slide-inner {
    align-items: flex-end;
    padding-top: calc(var(--header-h) + 80px);
    padding-bottom: 100px;
  }
  .hero__content { max-width: 100%; }
  .hero__cta-group { flex-direction: column; align-items: stretch; width: 100%; }
  .hero__cta-group .btn { width: 100%; white-space: normal; text-align: center; }
  .hero__control {
    top: calc(var(--header-h) + 34px);
    width: 40px;
    height: 40px;
    transform: none;
  }
  .hero__control--prev { left: auto; right: 64px; }
  .hero__control--next { right: 16px; }
  .hero__control span { font-size: 1.8rem; }
  .hero__dots { bottom: 22px; }

  .services-grid { grid-template-columns: 100%; }
  .service-card { padding: 22px 18px; }
  
  .about__media-card { padding: 32px 20px; }
  .portfolio-grid { grid-template-columns: minmax(0, 1fr); }
  .contact-form { padding: 28px 20px; }

  .footer__inner { grid-template-columns: minmax(0, 1fr); gap: 32px; }

  .float-whatsapp { width: 52px; height: 52px; right: 16px; bottom: 16px; }
  .back-to-top { width: 40px; height: 40px; right: 16px; bottom: 78px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section { padding: 44px 0; }
  .header__logo { height: 36px; }

  .hero__title { font-size: 1.85rem; margin: 14px 0 16px; }
  .hero__subtitle { font-size: 0.98rem; margin-bottom: 24px; }
  .hero__note { font-size: 0.85rem; }

  .service-card { padding: 20px 16px; }
  .service-card h3 { font-size: 1rem; }
  .service-card p { font-size: 0.88rem; }

  .about__media-card { padding: 24px 16px; }

  .portfolio__filters { gap: 8px; margin-bottom: 28px; }
  .filter-btn { padding: 7px 12px; font-size: 0.8rem; }

  .contact-form { padding: 22px 14px; }

  .float-whatsapp { width: 48px; height: 48px; right: 14px; bottom: 14px; }
  .back-to-top { width: 36px; height: 36px; right: 14px; bottom: 70px; }
}