* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #c40000;
  --primary-dark: #970000;
  --ink: #141414;
  --muted: #626262;
  --line: #e4e4e4;
  --surface: #f6f7f9;
  --white: #ffffff;
  --footer: #101010;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--white);
  color: var(--ink);
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.6;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
}

header {
  background: #000;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1180px;
  min-height: 78px;
  padding: 0 24px;
}

.logo {
  align-items: center;
  display: flex;
  min-width: 190px;
}

.logo img {
  display: block;
  height: 68px;
  object-fit: contain;
  width: auto;
}

.nav-links {
  align-items: center;
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--white);
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

#menu-toggle {
  display: none;
}

.hamburger {
  cursor: pointer;
  display: none;
  height: 22px;
  position: relative;
  width: 30px;
}

.hamburger span,
.hamburger::before,
.hamburger::after {
  background: var(--white);
  content: "";
  height: 3px;
  left: 0;
  position: absolute;
  transition: 0.25s ease;
  width: 100%;
}

.hamburger span {
  top: 9px;
}

.hamburger::before {
  top: 0;
}

.hamburger::after {
  bottom: 0;
}

#menu-toggle:checked + .hamburger span {
  opacity: 0;
}

#menu-toggle:checked + .hamburger::before {
  top: 9px;
  transform: rotate(45deg);
}

#menu-toggle:checked + .hamburger::after {
  bottom: 10px;
  transform: rotate(-45deg);
}

main {
  min-height: 60vh;
}

section {
  padding: 64px 24px;
}

.container {
  margin: 0 auto;
  max-width: 1120px;
}

.section-intro {
  color: var(--muted);
  font-size: 1.08rem;
  margin: 0 auto 34px;
  max-width: 760px;
  text-align: center;
}

h1,
h2,
h3 {
  line-height: 1.18;
}

h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 26px;
  text-align: center;
}

h1.page-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 26px;
  text-align: center;
}

h2::after {
  background: var(--primary);
  content: "";
  display: block;
  height: 4px;
  margin: 12px auto 0;
  width: 78px;
}

h1.page-title::after {
  background: var(--primary);
  content: "";
  display: block;
  height: 4px;
  margin: 12px auto 0;
  width: 78px;
}

.hero-pro {
  background:
    linear-gradient(rgba(12, 18, 28, 0.76), rgba(12, 18, 28, 0.82)),
    url("images/industrial-components.png") center/cover;
  color: var(--white);
  min-height: 520px;
  padding: 110px 24px;
  text-align: center;
}

.hero-content {
  margin: 0 auto;
  max-width: 940px;
}

.hero-content h1 {
  font-size: clamp(2.35rem, 5vw, 4.4rem);
  margin-bottom: 18px;
}

.hero-content p {
  color: #eeeeee;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 28px;
}

.btn {
  align-items: center;
  background: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 6px;
  color: var(--white);
  cursor: pointer;
  display: inline-flex;
  font-weight: 700;
  justify-content: center;
  min-height: 46px;
  padding: 10px 22px;
  text-decoration: none;
  transition: 0.2s ease;
}

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

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

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

.trust-strip {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, 1fr);
  margin: -42px auto 0;
  max-width: 1040px;
  padding: 22px;
  position: relative;
  z-index: 2;
}

.trust-strip div {
  color: var(--muted);
  font-weight: 700;
  text-align: center;
}

.brand-grid {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  justify-content: center;
}

.brand-grid img {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: block;
  height: 82px;
  object-fit: contain;
  padding: 18px;
  width: 170px;
}

.cards {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.product-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  text-align: center;
  transition: 0.2s ease;
}

.card:hover {
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
  transform: translateY(-4px);
}

.card > img {
  display: block;
  height: 210px;
  object-fit: cover;
  transition: transform 0.35s ease;
  width: 100%;
}

.card:hover > img {
  transform: scale(1.04);
}

.card-content,
.service-card,
.text-card {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 26px;
}

.card h3 {
  font-size: 1.28rem;
  margin-bottom: 10px;
}

.card p {
  color: var(--muted);
  margin-bottom: 18px;
}

.card .btn {
  align-self: center;
  margin-top: auto;
}

.card-icon {
  color: var(--primary);
  font-size: 2.1rem;
  margin-bottom: 12px;
}

.surface {
  background: var(--surface);
}

.dark-section {
  background: #101827;
  color: var(--white);
}

.dark-section h2 {
  color: var(--white);
}

.dark-section .card {
  background: #172235;
  border-color: rgba(255, 255, 255, 0.08);
}

.dark-section .card h3,
.dark-section .card p {
  color: var(--white);
}

.about-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1.4fr 1fr;
}

.about-panel {
  background: var(--surface);
  border-left: 6px solid var(--primary);
  border-radius: 8px;
  padding: 34px;
}

.about-panel p + p {
  margin-top: 16px;
}

.values-list {
  display: grid;
  gap: 18px;
}

.search-box {
  border: 1px solid #cfcfcf;
  border-radius: 8px;
  display: block;
  font-size: 1rem;
  margin: 0 auto 34px;
  max-width: 420px;
  padding: 13px 16px;
  width: 100%;
}

.contact-grid {
  display: grid;
  gap: 34px;
  grid-template-columns: 0.85fr 1.15fr;
}

.contact-list {
  background: var(--surface);
  border-radius: 8px;
  padding: 28px;
}

.contact-list p + p {
  margin-top: 12px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

form input,
form textarea {
  border: 1px solid #cfcfcf;
  border-radius: 6px;
  font: inherit;
  padding: 13px 14px;
}

form textarea {
  min-height: 150px;
  resize: vertical;
}

form input:focus,
form textarea:focus {
  border-color: var(--primary);
  outline: 2px solid rgba(196, 0, 0, 0.12);
}

.main-footer {
  background: var(--footer);
  color: #d5d5d5;
  padding: 54px 24px 24px;
}

.footer-grid {
  display: grid;
  gap: 30px;
  grid-template-columns: 1.4fr 0.8fr 1fr 1.2fr;
  margin: 0 auto 32px;
  max-width: 1120px;
}

.footer-grid h3,
.footer-grid h4 {
  color: var(--white);
  margin-bottom: 14px;
}

.footer-grid a {
  color: #b9b9b9;
  display: block;
  margin-bottom: 8px;
  text-decoration: none;
}

.footer-grid a:hover {
  color: var(--primary);
}

.footer-grid p {
  color: #b9b9b9;
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid #333;
  color: #999;
  margin: 0 auto;
  max-width: 1120px;
  padding-top: 20px;
  text-align: center;
}

.whatsapp {
  background: #22c55e;
  border-radius: 50%;
  bottom: 20px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.22);
  height: 58px;
  overflow: hidden;
  position: fixed;
  right: 20px;
  width: 58px;
  z-index: 900;
}

.whatsapp img {
  display: block;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.animate-fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  nav {
    min-height: 70px;
  }

  .logo img {
    height: 58px;
  }

  .hamburger {
    display: block;
  }

  .nav-links {
    background: #000;
    display: flex;
    flex-direction: column;
    gap: 0;
    left: 0;
    max-height: 0;
    overflow: hidden;
    position: absolute;
    right: 0;
    text-align: center;
    top: 70px;
    transition: max-height 0.3s ease;
  }

  .nav-links li {
    border-top: 1px solid #1e1e1e;
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 14px 20px;
  }

  #menu-toggle:checked ~ .nav-links {
    max-height: 360px;
  }

  .trust-strip,
  .about-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-strip {
    margin-top: 0;
  }
}

@media (max-width: 560px) {
  nav,
  section,
  .main-footer {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-pro {
    min-height: 470px;
    padding: 78px 18px;
  }

  .btn {
    width: 100%;
  }

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

  .brand-grid img {
    width: min(170px, calc(50% - 11px));
  }

  .about-panel,
  .contact-list,
  .card-content,
  .service-card,
  .text-card {
    padding: 22px;
  }
}