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

:root {
  --black:      #0a0a0a;
  --white:      #ffffff;
  --blue-bg:    #eaf4fb;      /* fondo celeste suave */
  --blue-light: #d4ecf7;      /* celeste borde/acento */
  --blue-mid:   #a8d4ec;      /* celeste medio */
  --gray-200:   #dde8ef;
  --gray-400:   #9ab0bc;
  --gray-500:   #6e8c9a;
  --gray-700:   #334a54;
  --btn-radius: 50px;         /* botones muy redondeados */
  --card-radius: 16px;
  --max-width:  1100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Montserrat', sans-serif;
  background: var(--blue-bg);
  color: var(--black);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── HEADER ─────────────────────────────────────── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(234, 244, 251, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--blue-light);
  transition: box-shadow 0.3s;
}

.header.scrolled {
  box-shadow: 0 2px 24px rgba(0,80,120,0.08);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(5, 5, 194);
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav a {
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--gray-700);
  padding: 8px 18px;
  border-radius: var(--btn-radius);
  transition: color 0.2s, background 0.2s;
}

.nav a:hover { color: var(--black); background: var(--blue-light); }

.nav .btn-nav {
  background: var(--black);
  color: var(--white) !important;
  font-weight: 700;
  padding: 10px 24px;
}

.nav .btn-nav:hover { background: #222; }

/* ─── BUTTONS ────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--black);
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 20px 48px;
  border: none;
  border-radius: var(--btn-radius);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
  white-space: nowrap;
}

.btn-primary:hover { background: #222; transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: transparent;
  color: var(--black);
  font-family: 'Montserrat', sans-serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 20px 48px;
  border: 1.5px solid var(--gray-400);
  border-radius: var(--btn-radius);
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
  white-space: nowrap;
}

.btn-outline:hover {
  border-color: var(--black);
  background: var(--blue-light);
  transform: translateY(-2px);
}

/* ─── HERO ───────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 24px 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: var(--blue-light);
  opacity: 0.6;
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px; left: -100px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: var(--blue-mid);
  opacity: 0.2;
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-500);
  border: 1px solid var(--blue-mid);
  background: var(--white);
  padding: 7px 20px;
  border-radius: 100px;
  margin-bottom: 44px;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.1s forwards;
}

.hero h1 {
  font-size: clamp(2.8rem, 6.5vw, 5.2rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.035em;
  color: var(--black);
  max-width: 820px;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.25s forwards;
}

.hero h1 em {
  font-style: normal;
  color: var(--gray-400);
}

.hero p {
  font-size: 18px;
  font-weight: 400;
  color: var(--gray-500);
  max-width: 500px;
  margin-bottom: 52px;
  line-height: 1.75;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.4s forwards;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.55s forwards;
}

/* ─── STATS BAR ──────────────────────────────────── */
.stats-bar {
  padding: 60px 24px;
  background: var(--white);
  border-top: 1px solid var(--blue-light);
  border-bottom: 1px solid var(--blue-light);
}

.stats-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--black);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-500);
}

/* ─── SECTION BASE ───────────────────────────────── */
.section { padding: 100px 24px; }

.section-alt {
  background: var(--white);
}

.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 16px;
  display: block;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--black);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 17px;
  color: var(--gray-500);
  max-width: 480px;
  line-height: 1.7;
  margin-bottom: 60px;
}

/* ─── PACKS / CARDS ──────────────────────────────── */
.packs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  align-items: start;
}

.card {
  background: var(--white);
  border: 1px solid var(--blue-light);
  border-radius: var(--card-radius);
  padding: 44px 40px;
  transition: transform 0.25s, box-shadow 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,100,160,0.1);
}

.card.recommended {
  background: var(--black);
  border-color: var(--black);
}

.card-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.card-badge.default {
  background: var(--blue-bg);
  color: var(--gray-700);
}

.card-badge.featured {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}

.card h3 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: var(--black);
}

.card.recommended h3 { color: var(--white); }

.card-desc {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
  line-height: 1.6;
}

.card.recommended .card-desc { color: rgba(255,255,255,0.55); }

.card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 44px;
}

.card ul li {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  gap: 12px;
}

.card.recommended ul li { color: rgba(255,255,255,0.85); }

.card ul li::before {
  content: '';
  display: block;
  width: 18px; height: 18px;
  min-width: 18px;
  border-radius: 50%;
  background-color: var(--blue-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230a0a0a' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 11px;
  background-position: center;
  background-repeat: no-repeat;
}

.card.recommended ul li::before {
  background-color: rgba(255,255,255,0.15);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

.card .btn-primary {
  width: 100%;
  font-size: 14px;
  padding: 18px;
}

.card.recommended .btn-primary {
  background: var(--white);
  color: var(--black);
}

.card.recommended .btn-primary:hover { background: var(--blue-bg); }

/* ─── CONTACT ─────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info > p {
  font-size: 17px;
  color: var(--gray-500);
  line-height: 1.75;
  margin-bottom: 40px;
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-detail a {
  font-size: 15px;
  font-weight: 600;
  color: var(--black);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: opacity 0.2s;
}

.contact-detail a:hover { opacity: 0.5; }

/* ─── FORM ────────────────────────────────────────── */
.form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--white);
  border: 1px solid var(--blue-light);
  border-radius: var(--card-radius);
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form input,
.form textarea {
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--black);
  background: var(--blue-bg);
  border: 1.5px solid var(--blue-light);
  border-radius: 12px;
  padding: 18px 20px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}

.form input::placeholder,
.form textarea::placeholder {
  color: var(--gray-400);
  font-weight: 400;
}

.form input:focus,
.form textarea:focus {
  border-color: var(--black);
  background: var(--white);
}

.form textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

.form .btn-primary {
  width: 100%;
  margin-top: 8px;
}

/* ─── FOOTER ─────────────────────────────────────── */
.footer {
  padding: 48px 24px;
  background: var(--white);
  border-top: 1px solid var(--blue-light);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-logo {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(5, 5, 194);
  text-decoration: none;
}

.footer-address {
  font-style: normal;
  font-size: 12px;
  color: var(--gray-400);
}

.footer-address a {
  color: var(--gray-400);
  text-decoration: none;
  font-weight: 500;
}

.footer-address a:hover { color: var(--black); }

.footer-copy {
  font-size: 12px;
  color: var(--gray-400);
  font-weight: 500;
}

/* ─── ANIMATIONS ─────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* fade-in: visible por defecto, JS agrega animación si carga */
.fade-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.will-animate {
  opacity: 0;
  transform: translateY(20px);
}

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

/* ─── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 768px) {
  .nav .btn-nav { display: none; }

  .hero { text-align: center; }
  .hero-cta { justify-content: center; }

  .stats-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .form-row { grid-template-columns: 1fr; }
  .form { padding: 24px; }

  .footer-inner { flex-direction: column; text-align: center; }
}