:root {
  --bg: #06111f;
  --bg-soft: #0c1c31;
  --surface: rgba(7, 20, 36, 0.78);
  --surface-strong: #0c1a2d;
  --surface-light: #132742;
  --text: #f4f8ff;
  --muted: #b6c3d8;
  --line: rgba(154, 181, 218, 0.18);
  --primary: #2d8cff;
  --primary-strong: #1267d6;
  --accent: #7ec5ff;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
  --radius: 24px;
  --radius-sm: 18px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    url("assets/sibro-background.svg") top right / min(78vw, 980px) no-repeat,
    radial-gradient(circle at top left, rgba(45, 140, 255, 0.18), transparent 28%),
    radial-gradient(circle at 85% 12%, rgba(126, 197, 255, 0.12), transparent 24%),
    linear-gradient(180deg, #06111f 0%, #081524 42%, #040a12 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(126, 197, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 197, 255, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.36), transparent 80%);
  pointer-events: none;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.section {
  padding: 5.5rem 0;
}

.eyebrow {
  margin: 0 0 1rem;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.section-heading h2,
.hero-copy h1,
.cta-card h2 {
  margin: 0;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.section-heading p,
.hero-lead,
.hero-text,
.cta-card p,
.product-text,
.benefit-card p,
.hero-card p,
.footer-copy,
.footer-contact a {
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(3, 10, 18, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-logo {
  width: 64px;
  height: 64px;
  object-fit: cover;
  object-position: left center;
  border-radius: 16px;
  box-shadow: 0 14px 30px rgba(18, 103, 214, 0.24);
}

.brand-lockup {
  display: grid;
  gap: 0.18rem;
}

.brand-text {
  font-weight: 800;
  letter-spacing: 0.18em;
}

.brand-tagline {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.site-nav a {
  position: relative;
  color: var(--muted);
  font-weight: 600;
  transition: color 180ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.35rem;
  cursor: pointer;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle.is-active span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-toggle.is-active span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 50px;
  padding: 0.9rem 1.3rem;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: 0 14px 30px rgba(18, 103, 214, 0.34);
}

.button-secondary,
.button-ghost {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.button-ghost:hover,
.button-secondary:hover,
.button-ghost:focus-visible,
.button-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.08);
}

.hero {
  padding-top: 4.5rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 2rem;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  max-width: 12ch;
}

.hero-lead {
  font-size: clamp(1.08rem, 2vw, 1.32rem);
  margin: 1.4rem 0 0;
  max-width: 62ch;
}

.hero-text {
  margin: 1rem 0 0;
  max-width: 62ch;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.hero-panel {
  position: relative;
  display: grid;
  gap: 1rem;
}

.hero-card,
.product-card,
.benefit-card,
.cta-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 28, 49, 0.92), rgba(8, 18, 32, 0.82));
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 1.5rem;
  border-radius: var(--radius);
}

.hero-card-primary {
  background: linear-gradient(145deg, rgba(45, 140, 255, 0.23), rgba(10, 24, 42, 0.92));
}

.hero-card-label,
.product-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-width: 54px;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(126, 197, 255, 0.12);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-card strong {
  display: block;
  font-size: 1.25rem;
  margin: 1rem 0 0.5rem;
}

.systems-grid,
.benefits-grid,
.showcase-grid {
  display: grid;
  gap: 1.4rem;
}

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

.benefits-layout {
  display: grid;
  gap: 2rem;
}

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

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

.product-card,
.benefit-card,
.showcase-card {
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.product-card:hover,
.benefit-card:hover,
.showcase-card:hover {
  transform: translateY(-8px);
  border-color: rgba(126, 197, 255, 0.32);
  box-shadow: 0 28px 60px rgba(3, 9, 18, 0.45);
}

.product-card__top {
  margin-bottom: 1rem;
}

.product-card h3,
.benefit-card h3,
.showcase-card h3 {
  margin: 1rem 0 0.45rem;
  font-size: 1.45rem;
}

.product-subtitle {
  margin: 0;
  color: var(--accent);
  font-weight: 700;
}

.product-text {
  line-height: 1.75;
}

.showcase-card {
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at top right, rgba(45, 140, 255, 0.16), transparent 34%),
    linear-gradient(180deg, rgba(12, 28, 49, 0.92), rgba(8, 18, 32, 0.84));
  box-shadow: var(--shadow);
}

.showcase-card p {
  color: var(--muted);
  line-height: 1.75;
}

.showcase-lead {
  margin: 0 0 0.9rem;
  color: var(--accent) !important;
  font-weight: 700;
}

.feature-list {
  list-style: none;
  margin: 1.35rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--text);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  box-shadow: 0 0 0 5px rgba(45, 140, 255, 0.12);
}

.benefit-card p {
  line-height: 1.7;
}

.cta-section {
  padding-top: 2rem;
}

.cta-card {
  border-radius: calc(var(--radius) + 8px);
  padding: 2.5rem;
  text-align: center;
  background:
    radial-gradient(circle at top center, rgba(45, 140, 255, 0.18), transparent 35%),
    linear-gradient(180deg, rgba(12, 28, 49, 0.95), rgba(7, 16, 28, 0.92));
}

.cta-card h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  max-width: 15ch;
  margin-inline: auto;
}

.cta-card p {
  max-width: 58ch;
  margin: 1rem auto 1.8rem;
  line-height: 1.7;
}

.site-footer {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
}

.footer-brand {
  margin: 0 0 0.4rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.footer-copy {
  margin: 0;
}

.footer-contact {
  display: grid;
  gap: 0.5rem;
  justify-items: end;
}

.footer-contact a:hover,
.footer-contact a:focus-visible {
  color: var(--text);
}

.whatsapp-float {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, #1faa59, #0e7c40);
  box-shadow: 0 18px 38px rgba(13, 89, 48, 0.35);
}

.whatsapp-float__icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.whatsapp-float__icon svg {
  width: 18px;
  height: 18px;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid,
  .systems-grid,
  .benefits-grid,
  .showcase-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  body {
    background-size: min(120vw, 840px), auto, auto, auto;
    background-position: top 5rem right -8rem, top left, 85% 12%, center;
  }

  .footer-grid {
    display: grid;
  }

  .footer-contact {
    justify-items: start;
  }
}

@media (max-width: 840px) {
  .menu-toggle {
    display: inline-flex;
  }

  .header-cta {
    display: none;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.8rem);
    left: 1rem;
    right: 1rem;
    display: grid;
    gap: 0.3rem;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(6, 17, 31, 0.96);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 0.85rem 0.4rem;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 4.5rem 0;
  }

  .hero {
    padding-top: 3.2rem;
  }

  body {
    background-size: 860px, auto, auto, auto;
    background-position: top 4.5rem right -16rem, top left, 85% 12%, center;
  }

  .hero-copy h1 {
    max-width: 10ch;
  }

  .brand-logo {
    width: 54px;
    height: 54px;
  }

  .brand-tagline {
    display: none;
  }

  .product-card,
  .benefit-card,
  .showcase-card,
  .hero-card,
  .cta-card {
    border-radius: 20px;
  }

  .cta-card {
    padding: 2rem 1.35rem;
  }

  .whatsapp-float {
    right: 0.75rem;
    bottom: 0.75rem;
    padding: 0.78rem 0.95rem;
  }

  .whatsapp-float__text {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}