:root {
  --brand: #23A5D9;
  --brand-dark: #1380ab;
  --accent: #6dd6ff;
  --accent-light: #b9ebff;
  --dark: #071226;
  --muted: #6b7280;
  --bg: #f7fafc;
  --white: #ffffff;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.07);
}

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

html {
  scroll-padding-top: 70px; 
}


body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
  scroll-behavior: smooth;
}

/* ----------------------------------
   HEADER
---------------------------------- */
header {
  text-align: center;
  padding: 100px 20px 80px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  position: relative;
  overflow: hidden;
}

header::before {
  content: "";
  position: absolute;
  top: -120px;
  left: -150px;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  filter: blur(80px);
}

header::after {
  content: "";
  position: absolute;
  bottom: -150px;
  right: -100px;
  width: 350px;
  height: 350px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  filter: blur(90px);
}

header img {
  height: 90px;
  margin-bottom: 24px;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.15));
}

header h1 {
  font-size: 2.6rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

header p {
  font-size: 1.15rem;
  opacity: 0.95;
  max-width: 760px;
  margin: 0 auto 30px;
}

.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 14px;
  background: linear-gradient(90deg, var(--brand-dark), var(--brand));
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 10px 30px rgba(35, 165, 217, 0.35);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(35, 165, 217, 0.45);
}

/* ----------------------------------
   SECCIONES GENERALES
---------------------------------- */
section {
  padding: 100px 20px;
  max-width: 1200px;
  margin: auto;
}

section h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 50px;
  color: var(--dark);
  position: relative;
}

section h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: var(--brand);
  margin: 16px auto 0;
  border-radius: 3px;
}

/* ----------------------------------
   INTRO
---------------------------------- */
#intro {
  max-width: 900px;
  text-align: center;
}

.intro-text {
  color: var(--muted);
  font-size: 1.1rem;
  margin-top: 10px;
  line-height: 1.8;
}

/* ----------------------------------
   CARACTERÍSTICAS
---------------------------------- */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 35px;
}

.feature {
  background: var(--white);
  border-radius: 18px;
  padding: 40px 30px;
  box-shadow: var(--shadow);
  text-align: left;
  transition: all 0.3s ease;
  border: 1px solid #eef2f6;
}

.feature:hover {
  transform: translateY(-6px);
  border-color: var(--brand);
}

.feature i {
  font-size: 1.8rem;
  color: var(--brand);
  margin-bottom: 16px;
}

.feature h3 {
  margin-bottom: 12px;
  font-size: 1.15rem;
  color: var(--dark);
  font-weight: 700;
}

.feature p {
  color: var(--muted);
  font-size: 0.97rem;
  line-height: 1.7;
}

/* ----------------------------------
   PLANES
---------------------------------- */
.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 40px;
}

.plan {
  background: var(--white);
  border-radius: 20px;
  box-shadow: var(--shadow);
  text-align: center;
  padding: 60px 40px;
  position: relative;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.plan:hover {
  transform: translateY(-8px);
  border-color: var(--brand);
}

.plan.destacado {
  border: 3px solid var(--brand);
  background: linear-gradient(180deg, #ffffff 0%, #f9fdff 100%);
  transform: scale(1.05);
  z-index: 2;
}

.plan h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--dark);
}

.plan .price {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--brand);
  margin-bottom: 6px;
}

.plan .annual {
  font-size: 1rem;
  color: #16a34a;
  font-weight: 600;
  margin-bottom: 10px;
}

.plan .annual i {
  color: var(--brand);
  margin-right: 6px;
}

.plan .trial {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 25px;
  font-size: 0.95rem;
}

.plan ul {
  list-style: none;
  margin-bottom: 30px;
  padding: 0;
  text-align: left;
}

.plan ul li {
  margin: 8px 0;
  color: var(--muted);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
}

.plan ul i {
  color: var(--brand);
  margin-right: 10px;
  font-size: 1rem;
}

.btn-secondary {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 12px;
  border: 2px solid var(--brand);
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: var(--brand);
  color: #fff;
}

/* ----------------------------------
   CTA DESCARGA
---------------------------------- */
.cta {
  text-align: center;
  background: linear-gradient(135deg, var(--brand-dark), var(--brand));
  color: #fff;
  border-radius: 24px;
  padding: 90px 20px;
  margin-top: 100px;
  box-shadow: var(--shadow);
}

.cta h2 {
  color: #fff;
  margin-bottom: 24px;
  font-size: 2rem;
}

.cta p {
  opacity: 0.95;
  margin-bottom: 30px;
  font-size: 1.05rem;
}

/* ----------------------------------
   FOOTER
---------------------------------- */
footer {
  text-align: center;
  padding: 50px 20px;
  font-size: 0.9rem;
  color: var(--muted);
  background: #fff;
  border-top: 1px solid #eaeaea;
}

footer a {
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
}

footer a:hover {
  text-decoration: underline;
}

/* ----------------------------------
   RESPONSIVE
---------------------------------- */
@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }
  .feature {
    text-align: center;
  }
  .feature i {
    margin-bottom: 8px;
  }
  .plan {
    padding: 50px 25px;
  }
}