/* =========================================
   SANTORINI ALL TERRAIN — styles.css
   ========================================= */

/* --- CSS VARIABLES --- */
:root {
  /* Colors — easily configurable */
  --color-primary:       #003087;   /* deep navy blue */
  --color-primary-dark:  #001f5c;
  --color-primary-light: #1a4db5;
  --color-accent:        #FFD600;   /* amber yellow */
  --color-accent-dark:   #e6be00;
  --color-white:         #ffffff;
  --color-gray-50:       #f8f9fc;
  --color-gray-100:      #f0f2f7;
  --color-gray-200:      #e2e6f0;
  --color-gray-500:      #8a94a8;
  --color-gray-600:      #5c6578;
  --color-dark:          #0d1628;
  --color-text:          #1c2233;
  --color-text-muted:    #5c6578;
  --color-green:         #25d366;

  /* Typography */
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Source Sans 3', sans-serif;

  /* Spacing */
  --section-pad:  clamp(60px, 8vw, 100px);
  --container:    1200px;
  --gap:          clamp(16px, 2.5vw, 24px);

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* --- RESET & BASE --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul { list-style: none; }

/* --- CONTAINER --- */
.container {
  width: min(var(--container), 100% - 2rem);
  margin-inline: auto;
}

/* --- UTILITIES --- */
.text--accent { color: var(--color-accent); }
.section { padding-block: var(--section-pad); }
.section--alt { background: var(--color-gray-50); }
.section--dark {
  background: #fff;
  color: var(--color-text);
}

.section__label {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: .75rem;
}
.section__label--light { color: var(--color-primary); }

.section__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.1;
  color: var(--color-text);
}
.section__title--light { color: var(--color-text); }

.section__sub {
  margin-top: .75rem;
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
}

.section__header {
  text-align: center;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.section__header .section__sub { margin-inline: auto; }

/* --- SCROLL REVEAL --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .65s var(--ease-out), transform .65s var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal--delay { transition-delay: .15s; }

/* =========================================
   TOP BAR
   ========================================= */
.topbar {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,.8);
  font-size: .82rem;
  padding-block: .55rem;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.topbar__contacts {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.topbar__link {
  display: flex;
  align-items: center;
  gap: .4rem;
  transition: color .2s;
}
.topbar__link svg { width: 14px; height: 14px; flex-shrink: 0; }
.topbar__link:hover { color: var(--color-accent); }
.topbar__social {
  display: flex;
  align-items: center;
  gap: .5rem;
}
.topbar__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.25);
  transition: background .2s, border-color .2s;
}
.topbar__social-link svg { width: 14px; height: 14px; }
.topbar__social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary-dark);
}

/* =========================================
   HEADER / NAVBAR
   ========================================= */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: 0 2px 20px rgba(0,48,135,.08);
  transition: background .3s, box-shadow .3s;
}
.header.is-scrolled {
  box-shadow: 0 4px 32px rgba(0,48,135,.15);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1.5rem;
  padding-block: .85rem;
}

.nav {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1001;
  display: flex;
  align-items: center;
  height: 68px;
}
.nav__list {
  display: flex;
  align-items: center;
  gap: .25rem;
}
.nav__link {
  font-size: .9rem;
  font-weight: 600;
  color: var(--color-text);
  padding: .4rem .7rem;
  border-radius: 6px;
  transition: color .2s, background .2s;
  white-space: nowrap;
}
.nav__link:hover,
.nav__link.is-active {
  color: var(--color-primary);
  background: var(--color-gray-100);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: .5rem;
  margin-inline-start: auto;
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform .3s var(--ease-out), opacity .3s;
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .92rem;
  padding: .7rem 1.4rem;
  border-radius: 8px;
  border: 2px solid transparent;
  transition: background .2s, color .2s, transform .15s, box-shadow .2s;
  white-space: nowrap;
  cursor: pointer;
}
.btn:active { transform: scale(.97); }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  box-shadow: 0 6px 20px rgba(0,48,135,.3);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  border-color: var(--color-accent);
  font-weight: 800;
}
.btn--accent:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  box-shadow: 0 6px 20px rgba(255,214,0,.4);
}

.btn--whatsapp {
  background: var(--color-green);
  color: var(--color-white);
  border-color: var(--color-green);
  font-size: 1rem;
  padding: .85rem 1.75rem;
}
.btn--whatsapp:hover {
  background: #1ebe5d;
  border-color: #1ebe5d;
  box-shadow: 0 8px 28px rgba(37,211,102,.35);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: rgba(0,48,135,.4);
  font-size: 1rem;
  padding: .85rem 1.75rem;
}
.btn--ghost:hover {
  background: rgba(0,48,135,.05);
  border-color: var(--color-primary);
}

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

/* =========================================
   HERO
   ========================================= */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: url('hero-bg.webp') center/cover no-repeat;
  padding-block: clamp(60px, 8vh, 100px);
  border-bottom: 1px solid var(--color-gray-200);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.70);
  z-index: 0;
}
.hero__backdrop,
.hero__inner,
.hero__scroll-cue {
  position: relative;
  z-index: 1;
}

/* Animated geometric backdrop */
.hero__backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__grid { display: none; }
.hero__glow { display: none; }
@keyframes glowFloat {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, 20px) scale(1.08); }
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}

.hero__content { max-width: 680px; }

.hero__logo {
  display: block;
  height: 162px;
  width: auto;
  margin: 0 0 1.75rem;
  object-fit: contain;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: transparent;
  border: none;
  color: var(--color-primary);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .35rem 0;
  margin-bottom: 1.5rem;
}
.hero__badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: .3; }
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 1.0;
  color: var(--color-text);
  letter-spacing: -.01em;
  margin-bottom: 1.25rem;
  text-shadow: 0 1px 3px rgba(0,0,0,0.18), 0 2px 8px rgba(0,0,0,0.10);
}
.hero__title em {
  font-style: normal;
  color: var(--color-accent);
  text-shadow: 0 1px 4px rgba(0,0,0,0.22), 0 2px 10px rgba(0,0,0,0.14);
}

.hero__subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 560px;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
  align-items: center;
}

/* Hero stat cards */
.hero__stats {
  display: flex;
  flex-direction: column;
  gap: .9rem;
}
.stat-card {
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  border-radius: 12px;
  padding: 1.2rem 1.4rem;
  text-align: center;
  min-width: 130px;
  box-shadow: 0 4px 16px rgba(0,48,135,.07);
}
.stat-card__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 2.2rem;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: .3rem;
}
.stat-card__label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  line-height: 1.3;
}

.hero__scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(0,48,135,.3);
  transition: color .2s;
  animation: scrollBounce 2.5s ease-in-out infinite;
}
.hero__scroll-cue svg { width: 28px; height: 28px; }
.hero__scroll-cue:hover { color: var(--color-accent); }
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* =========================================
   SOBRE / QUEM SOMOS
   ========================================= */
.sobre__inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}

.sobre__img-wrap { position: relative; }
.sobre__img-placeholder {
  border-radius: 16px;
  overflow: hidden;
  background: var(--color-gray-100);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sobre__img-placeholder svg { width: 80%; height: auto; }

.sobre__img-real {
  width: 100%;
  height: 420px;
  border-radius: 16px;
  object-fit: cover;
  object-position: 20% center;
  display: block;
}
.sobre__badge-float {
  position: absolute;
  bottom: -1rem;
  right: -1rem;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  font-weight: 800;
  font-size: .85rem;
  padding: .6rem 1.1rem;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}

.sobre__desc {
  color: var(--color-text-muted);
  margin-top: .9rem;
  font-size: 1.02rem;
}
.sobre__desc strong { color: var(--color-text); }

.sobre__pilares {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .6rem;
  margin-top: 1.75rem;
}
.pilar {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-weight: 600;
  font-size: .9rem;
  color: var(--color-text);
}
.pilar svg { width: 20px; height: 20px; flex-shrink: 0; }

/* =========================================
   MATERIAIS / PRODUTOS
   ========================================= */
.materiais__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}

.material-card {
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: .8rem;
  transition: border-color .25s, box-shadow .25s, transform .25s var(--ease-out);
}
.material-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 12px 40px rgba(0,48,135,.12);
  transform: translateY(-4px);
}

.material-card__img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

.material-card__name,
.material-card__desc,
.material-card__cta {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}
.material-card__name { padding-top: .2rem; }
.material-card__cta  { padding-bottom: 1.5rem; }

.material-card__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.45rem;
  color: var(--color-text);
  letter-spacing: .01em;
}

.material-card__desc {
  font-size: .9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

.material-card__cta {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-weight: 700;
  font-size: .88rem;
  color: var(--color-primary);
  margin-top: .25rem;
  transition: gap .2s, color .2s;
}
.material-card__cta svg { width: 16px; height: 16px; flex-shrink: 0; }
.material-card:hover .material-card__cta { gap: .7rem; color: var(--color-primary-light); }

/* =========================================
   SERVIÇOS
   ========================================= */
.servicos__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.servico-card {
  border-radius: 14px;
  border: 1.5px solid var(--color-gray-200);
  background: var(--color-white);
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s, transform .25s var(--ease-out);
}
.servico-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 10px 32px rgba(0,48,135,.08);
  transform: translateY(-3px);
}

.servico-card__img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.servico-card__title {
  padding: 1.25rem 1.5rem 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  margin-bottom: .5rem;
  line-height: 1.2;
}
.servico-card__desc {
  font-size: .9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  padding: .5rem 1.5rem 1.5rem;
}

/* =========================================
   DIFERENCIAIS
   ========================================= */
.diferenciais__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  max-width: 900px;
  margin-inline: auto;
}

.diferencial {
  border-left: 3px solid var(--color-accent);
  padding: 1.5rem 1.5rem 1.5rem 1.75rem;
  background: var(--color-gray-50);
  border-radius: 0 12px 12px 0;
  transition: background .25s;
}
.diferencial:hover { background: var(--color-gray-100); }

.diferencial__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 2.5rem;
  color: var(--color-accent);
  opacity: .5;
  line-height: 1;
  margin-bottom: .5rem;
}

.diferencial__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-text);
  margin-bottom: .5rem;
}
.diferencial__desc {
  font-size: .9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* =========================================
   CONTATO / ORÇAMENTO
   ========================================= */
.contato__inner {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 640px;
  margin-inline: auto;
}

.contato__desc {
  margin-top: .75rem;
  margin-bottom: 2rem;
  color: var(--color-text-muted);
  font-size: 1.02rem;
}

.contato__cards {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.contato-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 12px;
  border: 1.5px solid var(--color-gray-200);
  background: var(--color-gray-50);
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.contato-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 6px 20px rgba(0,48,135,.1);
  transform: translateX(4px);
}
.contato-card--whatsapp { border-color: rgba(37,211,102,.4); }
.contato-card--whatsapp:hover { border-color: var(--color-green); }
.contato-card svg {
  width: 24px; height: 24px;
  flex-shrink: 0;
  color: var(--color-primary);
}
.contato-card--whatsapp svg { color: var(--color-green); }

.contato-card__label {
  display: block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.contato-card__value {
  display: block;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
}

/* Form */
.form {
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-200);
  border-radius: 20px;
  padding: clamp(24px, 4vw, 40px);
  box-shadow: 0 8px 40px rgba(0,48,135,.07);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form__group { display: flex; flex-direction: column; margin-bottom: 1.1rem; }
.form__label {
  font-size: .82rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .4rem;
  letter-spacing: .02em;
}
.form__input {
  font-family: var(--font-body);
  font-size: .95rem;
  color: var(--color-text);
  background: var(--color-gray-50);
  border: 1.5px solid var(--color-gray-200);
  border-radius: 9px;
  padding: .7rem .9rem;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
  width: 100%;
  appearance: none;
}
.form__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,48,135,.1);
  background: var(--color-white);
}
.form__select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%235c6578' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  padding-right: 2.5rem;
}
.form__textarea { resize: vertical; min-height: 110px; }

/* =========================================
   FOOTER
   ========================================= */
.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,.7);
  padding-top: clamp(50px, 7vw, 80px);
}
.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-bottom: clamp(40px, 5vw, 60px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.contato__logo { text-align: center; margin-top: 2rem; }
.contato__logo-img { height: 130px; width: auto; display: inline-block; }
.footer__tagline { font-size: .9rem; line-height: 1.6; color: rgba(255,255,255,.5); max-width: 260px; margin-bottom: .5rem; }

.footer__social {
  display: flex;
  gap: .6rem;
  margin-top: 1.25rem;
}
.footer__social-link {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.6);
  transition: background .2s, border-color .2s, color .2s;
}
.footer__social-link svg { width: 16px; height: 16px; }
.footer__social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary-dark);
}

.footer__nav-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .9rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 1rem;
}
.footer__links { display: flex; flex-direction: column; gap: .55rem; }
.footer__links a {
  font-size: .9rem;
  color: rgba(255,255,255,.5);
  transition: color .2s;
}
.footer__links a:hover { color: var(--color-accent); }

.footer__contact { display: flex; flex-direction: column; gap: .55rem; }
.footer__contact-item {
  font-size: .9rem;
  color: rgba(255,255,255,.5);
  transition: color .2s;
  line-height: 1.5;
}
a.footer__contact-item:hover { color: var(--color-accent); }
.footer__location { font-style: italic; margin-top: .25rem; }

.footer__bottom {
  padding-block: 1.25rem;
  text-align: center;
  font-size: .82rem;
  color: rgba(255,255,255,.3);
}

/* =========================================
   FLOATING BUTTONS
   ========================================= */
.fab-whatsapp {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 900;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: var(--color-green);
  color: var(--color-white);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 24px rgba(37,211,102,.45);
  transition: transform .25s var(--ease-out), box-shadow .25s;
}
.fab-whatsapp svg { width: 28px; height: 28px; }
.fab-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: 0 10px 32px rgba(37,211,102,.6);
}
.fab-whatsapp__tooltip {
  position: absolute;
  right: calc(100% + 10px);
  white-space: nowrap;
  background: var(--color-dark);
  color: var(--color-white);
  font-size: .8rem;
  font-weight: 600;
  padding: .35rem .75rem;
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateX(6px);
  transition: opacity .2s, transform .2s;
}
.fab-whatsapp:hover .fab-whatsapp__tooltip {
  opacity: 1;
  transform: translateX(0);
}

.scroll-top {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 900;
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(0,48,135,.3);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .3s, transform .3s, background .2s;
}
.scroll-top svg { width: 20px; height: 20px; }
.scroll-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.scroll-top:hover { background: var(--color-primary-light); }

/* =========================================
   RESPONSIVE
   ========================================= */

/* Tablet / ≤ 1024px */
@media (max-width: 1024px) {
  .materiais__grid { grid-template-columns: repeat(2, 1fr); }
  .diferenciais__grid { grid-template-columns: repeat(2, 1fr); max-width: 100%; }
  .hero__stats { flex-direction: row; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__stats { justify-content: flex-start; flex-wrap: wrap; }
  .stat-card { min-width: 120px; flex: 1; }
}

/* Small tablet / ≤ 768px */
@media (max-width: 768px) {
    .header { display: none; }
  .nav__toggle {
    display: flex;
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1001;
    background: transparent;
    margin: 0;
  }
  .nav__toggle span { background: var(--color-white); }
  .hero { padding-top: clamp(60px, 10vh, 100px); min-height: 100svh; }
  .hero__logo { margin: 0 auto 1.75rem; }

  .topbar__contacts { display: none; }

  .nav {
    position: fixed;
    inset: 0;
    left: 0;
    transform: none;
    height: auto;
    background: var(--color-white);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s;
  }
  .nav.is-open { opacity: 1; pointer-events: auto; }
  .nav__list { flex-direction: column; gap: .5rem; text-align: center; }
  .nav__link { font-size: 1.4rem; padding: .75rem 2rem; }
  .header__cta { display: none; }

  .sobre__inner { grid-template-columns: 1fr; }
  .sobre__visual { order: -1; }
  .sobre__badge-float { bottom: .5rem; right: .5rem; }

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

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


}

/* Mobile / ≤ 540px */
@media (max-width: 540px) {
  .hero__title { font-size: 2.4rem; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { justify-content: center; }

  .materiais__grid { grid-template-columns: 1fr; }
  .servicos__grid { grid-template-columns: 1fr; }
  .diferenciais__grid { grid-template-columns: 1fr; }

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

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


  .sobre__img-real { object-position: center center; }
}