/* ============================================================
   CONSTRUVIC — style.css
   Mobile-first, CSS custom properties, Montserrat font
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&display=swap');

/* ── Custom Properties ── */
:root {
  --color-primary: #1B5E3B;
  --color-primary-dark: #0d3d22;
  --color-primary-light: #246b45;
  --color-accent: #F5A623;
  --color-accent-dark: #d4891a;
  --color-white: #FFFFFF;
  --color-dark: #111111;
  --color-gray: #F5F5F5;
  --color-gray-mid: #e0e0e0;
  --color-text-muted: #666666;
  --color-whatsapp: #25D366;

  --font-family: 'Montserrat', sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 5rem;

  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.18);

  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;

  --header-height: 70px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  color: var(--color-dark);
  background-color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* ── Utility ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: var(--spacing-xs);
  line-height: 1.2;
}

.section-title--white {
  color: var(--color-white);
}

.section-title-underline {
  display: inline-block;
  width: 60px;
  height: 4px;
  background: var(--color-accent);
  border-radius: var(--border-radius-full);
  margin-bottom: var(--spacing-lg);
}

.section-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.85rem 1.75rem;
  border-radius: var(--border-radius-full);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn--whatsapp {
  background: var(--color-whatsapp);
  color: var(--color-white);
  border-color: var(--color-whatsapp);
  font-size: 1.05rem;
  padding: 1rem 2rem;
}

.btn--whatsapp:hover {
  background: #1da851;
  border-color: #1da851;
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-primary);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition-base);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
}

.logo__icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.logo__wordmark {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-white);
  letter-spacing: 0.05em;
  line-height: 1;
}

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

/* Nav */
.nav {
  display: none;
  flex-direction: column;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-primary-dark);
  padding: var(--spacing-sm) 0;
  box-shadow: var(--shadow-md);
}

.nav.nav-open {
  display: flex;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nav__item a {
  display: block;
  padding: 0.85rem var(--spacing-sm);
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav__item a:hover,
.nav__item a.active {
  color: var(--color-accent);
  background: rgba(255, 255, 255, 0.05);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--border-radius-sm);
  transition: background var(--transition-fast);
}

.hamburger:hover {
  background: rgba(255, 255, 255, 0.1);
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.is-active .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  position: relative;
  overflow: hidden;
}

/* Decorative geometric background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      -45deg,
      rgba(255, 255, 255, 0.03) 0px,
      rgba(255, 255, 255, 0.03) 1px,
      transparent 1px,
      transparent 40px
    );
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -80px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(245, 166, 35, 0.08);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent);
  color: var(--color-dark);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--border-radius-full);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.02em;
}

.hero__title {
  font-size: clamp(2rem, 6vw, 3.8rem);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: var(--spacing-md);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.hero__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ── Sobre Nós ── */
.sobre {
  background: var(--color-gray);
  padding: var(--spacing-2xl) 0;
}

.sobre__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.sobre__text p {
  font-size: 1.05rem;
  color: #444;
  line-height: 1.8;
}

.sobre__visual {
  background: var(--color-primary);
  border-radius: var(--border-radius-lg);
  min-height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xl);
  text-align: center;
}

.sobre__visual-icon {
  font-size: 4rem;
  line-height: 1;
}

.sobre__visual-text {
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.2rem;
}

.sobre__visual-sub {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.sobre__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
}

.stat-card {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-card__icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}

.stat-card__content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.stat-card__content p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ── Produtos ── */
.produtos {
  background: var(--color-white);
  padding: var(--spacing-2xl) 0;
}

.produtos__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.product-card {
  background: var(--color-white);
  border: 2px solid var(--color-gray-mid);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  text-align: center;
  cursor: default;
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.product-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.product-card__icon {
  font-size: 2.8rem;
  line-height: 1;
  margin-bottom: var(--spacing-xs);
  display: block;
}

.product-card__name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.3;
}

/* ── Diferenciais ── */
.diferenciais {
  background: var(--color-primary);
  padding: var(--spacing-2xl) 0;
  position: relative;
  overflow: hidden;
}

.diferenciais::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      rgba(255, 255, 255, 0.02) 0px,
      rgba(255, 255, 255, 0.02) 1px,
      transparent 1px,
      transparent 50px
    );
  pointer-events: none;
}

.diferenciais__header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

.diferenciais__header .section-title-underline {
  display: block;
  margin: var(--spacing-xs) auto var(--spacing-lg);
}

.diferenciais__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
  position: relative;
  z-index: 1;
}

.diferencial-card {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  transition: background var(--transition-base), transform var(--transition-base);
}

.diferencial-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
}

.diferencial-card__icon {
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.diferencial-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.4rem;
}

.diferencial-card__desc {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.6;
}

/* ── Contato ── */
.contato {
  background: var(--color-gray);
  padding: var(--spacing-2xl) 0;
}

.contato__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

.contato__info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contato__info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.contato__info-icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.contato__info-content h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.2rem;
}

.contato__info-content p {
  font-size: 0.98rem;
  color: #444;
  line-height: 1.5;
}

.contato__whatsapp-btn {
  margin-top: var(--spacing-xs);
}

.contato__map {
  background: var(--color-gray-mid);
  border-radius: var(--border-radius-md);
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  text-align: center;
  padding: var(--spacing-lg);
  border: 2px dashed #ccc;
}

.contato__map-icon {
  font-size: 3rem;
}

.contato__map-text {
  font-size: 1rem;
  font-weight: 600;
  color: #666;
}

.contato__map-sub {
  font-size: 0.85rem;
  color: #999;
}

/* ── Footer ── */
.footer {
  background: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
}

.footer__brand .logo {
  margin-bottom: var(--spacing-sm);
}

.footer__brand p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
  max-width: 260px;
}

.footer__col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__links a {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

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

.footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__contact-list li {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer__contact-list a {
  color: var(--color-accent);
  font-weight: 600;
  transition: color var(--transition-fast);
}

.footer__contact-list a:hover {
  color: var(--color-accent-dark);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-sm) 0;
  text-align: center;
}

.footer__bottom p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.45);
}

/* ── WhatsApp Floating Button ── */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  animation: whatsapp-pulse 2.5s ease-in-out infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.6);
  animation: none;
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: var(--color-white);
}

.whatsapp-float__tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-dark);
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  border-radius: var(--border-radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.whatsapp-float__tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--color-dark);
}

.whatsapp-float:hover .whatsapp-float__tooltip {
  opacity: 1;
}

@keyframes whatsapp-pulse {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
  }
  50% {
    box-shadow: 0 4px 32px rgba(37, 211, 102, 0.75), 0 0 0 10px rgba(37, 211, 102, 0.12);
  }
}

/* ── Responsive: Tablet (≥768px) ── */
@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }

  /* Nav */
  .nav {
    display: flex !important;
    flex-direction: row;
    position: static;
    background: transparent;
    padding: 0;
    box-shadow: none;
  }

  .nav__list {
    flex-direction: row;
    gap: 0.25rem;
  }

  .nav__item a {
    padding: 0.5rem 0.85rem;
    border-radius: var(--border-radius-sm);
  }

  .hamburger {
    display: none;
  }

  /* Hero */
  .hero__cta {
    flex-direction: row;
    justify-content: center;
  }

  /* Sobre */
  .sobre__stats {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Produtos */
  .produtos__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
  }

  .product-card__icon {
    font-size: 3.2rem;
  }

  .product-card__name {
    font-size: 0.95rem;
  }

  /* Diferenciais */
  .diferenciais__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  /* Contato */
  .contato__grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

/* ── Responsive: Desktop (≥1024px) ── */
@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-xl);
  }

  /* Sobre */
  .sobre__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  /* Produtos */
  .produtos__grid {
    gap: var(--spacing-lg);
  }

  .product-card {
    padding: var(--spacing-lg);
  }

  .product-card__icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
  }

  .product-card__name {
    font-size: 1rem;
  }
}

/* ── Scroll-to-top padding for anchors ── */
section[id] {
  scroll-margin-top: var(--header-height);
}