:root {
  --bg: #f3f8ff;
  --ink: #0f172a;
  --muted: #475569;
  --brand: #0ea5e9;
  --brand-deep: #0369a1;
  --accent: #f97316;
  --radius: 18px;
  --shadow: 0 16px 40px rgba(2, 6, 23, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Sora", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 0% 0%, #d7f0ff 0%, var(--bg) 44%),
              radial-gradient(circle at 100% 20%, #ffe8d3 0%, transparent 40%),
              var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

.navbar {
  backdrop-filter: saturate(170%) blur(9px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
}

.navbar-brand {
  font-weight: 800;
  letter-spacing: 0.2px;
}

.nav-link {
  font-weight: 600;
  color: var(--muted);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--brand-deep);
}

.btn-brand {
  background: linear-gradient(130deg, var(--brand), #22d3ee);
  color: #fff;
  border: 0;
  border-radius: 999px;
  font-weight: 700;
  padding: 0.75rem 1.3rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 10px 24px rgba(14, 165, 233, 0.28);
}

.btn-brand:hover,
.btn-brand:focus {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(14, 165, 233, 0.36);
}

.btn-outline-brand {
  border-radius: 999px;
  border: 2px solid var(--brand);
  color: var(--brand-deep);
  font-weight: 700;
  padding: 0.65rem 1.2rem;
}

.btn-outline-brand:hover,
.btn-outline-brand:focus {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.hero {
  min-height: 88vh;
  position: relative;
  display: flex;
  align-items: center;
  padding: 7.5rem 0 4rem;
  isolation: isolate;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.5;
  animation: float 8s ease-in-out infinite;
}

.hero::before {
  width: 260px;
  height: 260px;
  background: linear-gradient(130deg, #0ea5e9, #22d3ee);
  top: 8%;
  right: 7%;
}

.hero::after {
  width: 200px;
  height: 200px;
  background: linear-gradient(130deg, #f97316, #fb923c);
  bottom: 10%;
  left: 8%;
  animation-delay: 1s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

.hero-card {
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(148, 163, 184, 0.26);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.hero h1 {
  font-weight: 800;
  line-height: 1.1;
  font-size: clamp(2rem, 5vw, 3.6rem);
  margin-bottom: 1rem;
}

.hero p {
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.16rem);
  max-width: 760px;
  margin-bottom: 1.8rem;
}

.section-title {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 0.65rem;
}

.section-subtitle {
  color: var(--muted);
  margin-bottom: 2rem;
}

.demo-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: var(--radius);
  padding: 1.4rem;
  height: 100%;
  box-shadow: 0 8px 26px rgba(15, 23, 42, 0.05);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

.demo-card::after {
  content: "";
  position: absolute;
  inset: auto -35% -35% auto;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.16), transparent 65%);
  transition: transform 0.25s ease;
}

.demo-card:hover,
.demo-card:focus {
  transform: translateY(-7px) scale(1.01);
  box-shadow: 0 18px 34px rgba(2, 8, 23, 0.12);
  border-color: rgba(14, 165, 233, 0.5);
  color: inherit;
}

.demo-card:hover::after,
.demo-card:focus::after {
  transform: scale(1.15);
}

.demo-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.9rem;
  font-size: 1.25rem;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  box-shadow: 0 8px 18px rgba(3, 105, 161, 0.35);
}

.demo-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.demo-card p {
  color: var(--muted);
  margin-bottom: 1.1rem;
  min-height: 48px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  background: #ebf8ff;
  color: var(--brand-deep);
  font-size: 0.86rem;
  font-weight: 700;
  padding: 0.34rem 0.72rem;
}

.feature-card {
  background: #fff;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
  padding: 1.4rem;
}

.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff1e8;
  color: var(--accent);
  margin-bottom: 0.8rem;
  font-size: 1.1rem;
}

.cta {
  background: linear-gradient(130deg, #0c4a6e 0%, #0369a1 48%, #0ea5e9 100%);
  color: #fff;
  border-radius: 26px;
  box-shadow: 0 22px 34px rgba(3, 105, 161, 0.28);
  padding: 2.3rem;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.18), transparent 72%);
  right: -95px;
  top: -95px;
}

.cta-pricing-title {
  margin-bottom: 0.4rem;
  line-height: 1.25;
}

.cta-pricing-title .old-price {
  opacity: 0.72;
  text-decoration: line-through;
  text-decoration-thickness: 2px;
  text-decoration-color: rgba(255, 255, 255, 0.78);
  font-weight: 600;
  margin: 0 0.25rem;
}

.cta-pricing-title .new-price {
  font-weight: 800;
  font-size: clamp(1.65rem, 3.8vw, 2.15rem);
  color: #fff;
  white-space: nowrap;
}

.cta-offer-label {
  margin: 0 0 0.6rem;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  color: rgba(255, 255, 255, 0.9);
}

.cta-actions {
  margin-top: 0.8rem;
}

.cta-whatsapp-btn {
  font-weight: 700;
  border-radius: 999px;
  padding: 0.78rem 1.35rem;
  border: 0;
  background: #fff;
  color: #0369a1;
  box-shadow: 0 12px 24px rgba(2, 6, 23, 0.22);
  transition: transform 0.25s ease, box-shadow 0.25s ease, color 0.25s ease;
  animation: ctaGlow 2.8s ease-in-out infinite;
}

.cta-whatsapp-btn:hover,
.cta-whatsapp-btn:focus {
  transform: translateY(-2px);
  color: #0c4a6e;
  box-shadow: 0 16px 30px rgba(2, 6, 23, 0.3);
}

@keyframes ctaGlow {
  0%,
  100% {
    box-shadow: 0 12px 24px rgba(2, 6, 23, 0.22);
  }
  50% {
    box-shadow: 0 14px 28px rgba(2, 6, 23, 0.3);
  }
}

footer {
  background: #0b1324;
  color: #d6e1f1;
  margin-top: 4rem;
}

footer a {
  color: #d6e1f1;
  text-decoration: none;
}

footer a:hover,
footer a:focus {
  color: #7dd3fc;
}

.footer-title {
  font-weight: 700;
  color: #f8fbff;
  margin-bottom: 0.8rem;
}

.float-whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-decoration: none;
  font-size: 1.45rem;
  background: linear-gradient(130deg, #22c55e, #16a34a);
  box-shadow: 0 12px 24px rgba(22, 163, 74, 0.34);
  z-index: 1090;
  transition: transform 0.22s ease;
}

.float-whatsapp:hover,
.float-whatsapp:focus {
  color: #fff;
  transform: scale(1.08);
}

@media (max-width: 991.98px) {
  .hero {
    min-height: auto;
    padding-top: 6.4rem;
  }

  .hero-card {
    margin-top: 1rem;
  }

  .cta {
    padding: 2rem;
  }

  .cta-actions {
    margin-top: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cta-whatsapp-btn {
    animation: none;
    transition: none;
  }

  .hero::before,
  .hero::after,
  .demo-card,
  .btn-brand,
  .float-whatsapp {
    animation: none;
    transition: none;
  }
}