/* =============================================
   INSTITUTO ALTUM – Hoja de estilos principal
   ============================================= */

/* ── Variables y Reset ───────────────────────── */
:root {
  --blue:       #0066ad;
  --blue-dark:  #004f87;
  --blue-light: #e8f2fa;
  --blue-mid:   #1a7bbf;
  --yellow:     #f9c80e;
  --yellow-dark:#e0b000;
  --white:      #fcfeff;
  --gray-50:    #f8fafc;
  --gray-100:   #f1f5f9;
  --gray-200:   #e2e8f0;
  --gray-400:   #94a3b8;
  --gray-600:   #475569;
  --gray-800:   #1e293b;
  --green-wa:   #25D366;
  --green-wa-dk:#1ab855;

  --font-main: 'Poppins', sans-serif;
  --radius:     14px;
  --radius-sm:  8px;
  --radius-lg:  24px;
  --shadow-sm:  0 2px 8px rgba(0,102,173,.08);
  --shadow-md:  0 8px 24px rgba(0,102,173,.12);
  --shadow-lg:  0 20px 60px rgba(0,102,173,.16);
  --transition: .3s cubic-bezier(.4,0,.2,1);

  --nav-h: 105px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-main);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 88px 0;
}

/* ── Animations ─────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes pulse-ring {
  0%   { transform: scale(1); opacity: .8; }
  100% { transform: scale(2.2); opacity: 0; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes slideIn {
  from { opacity:0; transform: translateX(20px); }
  to   { opacity:1; transform: translateX(0); }
}

.animate-fade-up {
  opacity: 0;
  animation: fadeUp .7s var(--transition) both;
  animation-delay: var(--delay, 0s);
}
.animate-fade-left {
  opacity: 0;
  animation: fadeLeft .8s var(--transition) both;
  animation-delay: var(--delay, 0s);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Buttons ─────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-main);
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn--sm  { padding: 9px 18px;  font-size: .85rem; }
.btn--md  { padding: 12px 24px; font-size: .95rem; }
.btn--lg  { padding: 14px 28px; font-size: 1rem;   }
.btn--full{ width: 100%; justify-content: center; }

.btn--primary {
  background: var(--blue);
  color: white;
  box-shadow: 0 4px 16px rgba(0,102,173,.30);
}
.btn--primary:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,102,173,.35);
}

.btn--whatsapp {
  background: var(--green-wa);
  color: white;
  box-shadow: 0 4px 16px rgba(37,211,102,.30);
}
.btn--whatsapp:hover {
  background: var(--green-wa-dk);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,211,102,.40);
}

.btn--yellow {
  background: var(--yellow);
  color: var(--gray-800);
  box-shadow: 0 4px 16px rgba(249,200,14,.30);
}
.btn--yellow:hover {
  background: var(--yellow-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249,200,14,.40);
}

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

.btn--ghost {
  background: rgba(255,255,255,.12);
  color: var(--gray-800);
  border-color: var(--gray-200);
  backdrop-filter: blur(4px);
}
.btn--ghost:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 99px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.tag--yellow { background: var(--yellow); color: var(--gray-800); }
.tag--blue   { background: var(--blue);   color: white; }

/* ── Section Headers ─────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--gray-800);
  line-height: 1.25;
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-600);
}

/* ── NAVBAR ──────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(252,254,255,.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow .3s ease;
}
.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 32px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-right: 24px;
}
.nav-logo img {
  height: 200px;

}
/* Footer white logo version */
.nav-logo--white img {
  filter: brightness(0) invert(1);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  font-size: .875rem;
  font-weight: 500;
  color: var(--gray-600);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link:hover { color: var(--blue); background: var(--blue-light); }

.nav-badge {
  background: var(--yellow);
  color: var(--gray-800);
  font-size: .65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* Dropdown */
.nav-dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  padding: 8px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: var(--transition);
  z-index: 100;
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.dropdown-item {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  color: var(--gray-600);
  transition: var(--transition);
}
.dropdown-item:hover { background: var(--blue-light); color: var(--blue); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: white;
  border-top: 1px solid var(--gray-200);
  padding: 16px 24px 24px;
  gap: 4px;
  animation: fadeUp .2s ease;
}
.mobile-menu.open { display: flex; }
.mobile-nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-link {
  display: block;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray-600);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.mobile-link:hover { background: var(--blue-light); color: var(--blue); }

/* ── HERO ────────────────────────────────────── */
.hero {
  min-height: 100vh;
  padding-top: var(--nav-h);
  background: linear-gradient(135deg, var(--white) 0%, #eef5fb 50%, var(--white) 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%; right: -5%;
  width: 60vw; height: 80vh;
  background: radial-gradient(ellipse at 70% 30%, rgba(0,102,173,.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 60px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--blue-light);
  color: var(--blue);
  border: 1px solid rgba(0,102,173,.2);
  padding: 6px 14px;
  border-radius: 99px;
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--gray-800);
  margin-bottom: 16px;
}
.hero-title--accent {
  color: var(--blue);
  position: relative;
}
.hero-title--accent::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 4px;
  background: var(--yellow);
  border-radius: 2px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--gray-600);
  margin-bottom: 16px;
}

.hero-highlight {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: rgba(249,200,14,.1);
  border: 1px solid rgba(249,200,14,.3);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: .875rem;
  color: var(--gray-600);
  margin-bottom: 28px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.trust-item {
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 10px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 10px 14px;
  box-shadow: var(--shadow-sm);
}
.trust-item strong { display: block; font-size: .85rem; font-weight: 700; color: var(--gray-800); }
.trust-item span   { font-size: .75rem; color: var(--gray-400); }

.hero-visual { position: relative; }
.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: visible;
}
.hero-image-bg {
  position: absolute;
  inset: 16px -16px -16px 16px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-mid) 100%);
  border-radius: var(--radius-lg);
  z-index: 0;
  opacity: .12;
}
.hero-img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1;
}

.hero-float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  background: white;
  border-radius: var(--radius);
  padding: 12px 16px;
  box-shadow: var(--shadow-md);
  z-index: 2;
  animation: float 3s ease-in-out infinite;
}
.hero-float-card strong { display: block; font-size: .8rem; font-weight: 700; color: var(--gray-800); line-height: 1; }
.hero-float-card span   { font-size: .7rem; color: var(--gray-400); }

.hero-float-card   { top: 60px;  left: -20px;  animation-delay: 0s; }
.hero-float-card--2{ bottom: 120px; left: -24px; animation-delay: 1s; }
.hero-float-card--3{ bottom: 40px;  right: -8px;  animation-delay: 2s; }

/* ── INSCRIPCIONES BANNER ───────────────────── */
.inscripciones-banner {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  padding: 20px 0;
}
.inscripciones-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}
.inscripciones-icon {
  background: rgba(255,255,255,.15);
  border-radius: 50%;
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.inscripciones-text {
  color: white;
  font-size: 1rem;
  flex: 1;
  min-width: 200px;
}
.inscripciones-text strong { display: block; font-size: 1.05rem; }

/* ── BENEFICIOS ─────────────────────────────── */
.beneficios { background: var(--white); }

.beneficios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.beneficio-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 24px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
  background: white;
}
.beneficio-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-light);
}

.beneficio-icon {
  width: 60px; height: 60px;
  background: var(--blue-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.beneficio-item h3 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--gray-800);
  line-height: 1.3;
}
.beneficio-item p {
  font-size: .8rem;
  color: var(--gray-400);
  line-height: 1.4;
}

.beneficios-cta {
  text-align: center;
  margin-top: 40px;
}

/* ── PREPARATORIA ───────────────────────────── */
.preparatoria {
  background: linear-gradient(135deg, #f0f7ff 0%, var(--gray-50) 100%);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.preparatoria-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.preparatoria-desc {
  font-size: 1rem;
  color: var(--gray-600);
  margin-bottom: 28px;
}

.preparatoria-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 32px;
}

.prep-feature-col { display: flex; flex-direction: column; gap: 10px; }

.prep-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .875rem;
  color: var(--gray-600);
  font-weight: 500;
}

.preparatoria-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.preparatoria-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}
.preparatoria-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--yellow));
}

.prep-card-icon {
  width: 80px; height: 80px;
  background: var(--blue-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.preparatoria-card h3 {
  font-size: .85rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.preparatoria-card p {
  font-size: .9rem;
  color: var(--gray-600);
  margin-bottom: 24px;
}

.prep-highlights { display: flex; flex-direction: column; gap: 12px; }
.prep-highlight {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .875rem;
  color: var(--gray-600);
  font-weight: 500;
}

/* ── CARRERAS ───────────────────────────────── */
.carreras { background: var(--gray-50); }

.carreras-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.carrera-card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.carrera-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,102,173,.2);
}

.carrera-card-inner { padding: 32px; }

.carrera-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 8px 24px rgba(0,102,173,.25);
}
.carrera-icon--2 { background: linear-gradient(135deg, #1a7bbf, #0066ad); }
.carrera-icon--3 { background: linear-gradient(135deg, var(--blue-dark), #0066ad); }

.carrera-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--gray-800);
  margin-bottom: 10px;
}
.carrera-desc {
  font-size: .875rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 20px;
}

.carrera-meta { margin-bottom: 20px; }
.carrera-meta-item {
  display: flex;
  gap: 6px;
  font-size: .8rem;
  margin-bottom: 4px;
}
.meta-label { color: var(--gray-400); font-weight: 500; }
.meta-value  { color: var(--gray-800); font-weight: 600; }

.carrera-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--blue);
  font-weight: 600;
  font-size: .875rem;
  transition: var(--transition);
}
.carrera-link:hover { gap: 10px; }

.carreras-ctas { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ── TESTIMONIOS ────────────────────────────── */
.testimonios { background: white; }

.slider-wrap { max-width: 960px; margin: 0 auto; overflow: hidden; }

.slider {
  display: flex;
  gap: 28px;
  transition: transform .5s cubic-bezier(.4,0,.2,1);
}

.testimonio-card {
  min-width: calc(33.33% - 19px);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  flex-shrink: 0;
  transition: var(--transition);
}
.testimonio-card:hover {
  background: white;
  box-shadow: var(--shadow-md);
  border-color: rgba(0,102,173,.2);
}

.testimonio-quote {
  font-size: .95rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}
.testimonio-quote::before { content: '"'; font-size: 2rem; color: var(--blue); line-height: 0; vertical-align: -.4em; }

.testimonio-autor {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.autor-avatar {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--blue), var(--blue-mid));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .85rem;
  flex-shrink: 0;
}
.autor-avatar--2 { background: linear-gradient(135deg, #1a7bbf, #0099e6); }
.autor-avatar--3 { background: linear-gradient(135deg, var(--blue-dark), var(--blue)); }
.autor-avatar--4 { background: linear-gradient(135deg, #0066ad, #00a86b); }

.testimonio-autor strong { display: block; font-size: .9rem; color: var(--gray-800); }
.testimonio-autor span   { font-size: .78rem; color: var(--gray-400); }
.testimonio-stars { color: var(--yellow); font-size: 1rem; letter-spacing: 2px; }

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
}
.slider-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 2px solid var(--gray-200);
  background: white;
  color: var(--gray-600);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  cursor: pointer;
}
.slider-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-light);
}
.slider-dots { display: flex; gap: 6px; }
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gray-200);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.dot.active { background: var(--blue); transform: scale(1.3); }

/* ── TRES CARDS ─────────────────────────────── */
.tres-cards { background: var(--gray-50); }

.tres-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tres-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.tres-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0,102,173,.2);
}

.tres-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--gray-800);
  margin-bottom: 10px;
  margin-top: 16px;
}
.tres-card p {
  font-size: .875rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 20px;
}

.tres-card-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tres-card-icon--yellow { background: var(--yellow); }
.tres-card-icon--blue   { background: var(--blue); }
.tres-card-icon--green  { background: var(--green-wa); }

.tres-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--blue);
  font-weight: 600;
  font-size: .875rem;
  transition: var(--transition);
}
.tres-link:hover { gap: 8px; color: var(--blue-dark); }

.descargas-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.descarga-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  color: var(--blue);
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: var(--blue-light);
  transition: var(--transition);
}
.descarga-item:hover { background: rgba(0,102,173,.1); }

/* ── CTA FINAL ──────────────────────────────── */
.cta-final {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  position: relative;
  overflow: hidden;
}
.cta-final::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 5 L55 50 L5 50 Z' fill='none' stroke='rgba(255,255,255,0.04)' stroke-width='1'/%3E%3Cpath d='M30 18 L48 48 L12 48 Z' fill='none' stroke='rgba(255,255,255,0.04)' stroke-width='1'/%3E%3C/svg%3E") repeat;
  pointer-events: none;
}

.cta-final-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-final-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  color: white;
  margin-bottom: 12px;
}
.cta-final-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,.75);
  margin-bottom: 36px;
}
.cta-final-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ── CONTACTO ───────────────────────────────── */
.contacto { background: white; }

.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contacto-info p {
  color: var(--gray-600);
  margin: 16px 0 28px;
  line-height: 1.7;
}

.contacto-datos { display: flex; flex-direction: column; gap: 14px; }
.dato-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .9rem;
  color: var(--gray-600);
}

.contacto-form {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-800);
}

.form-group input,
.form-group select {
  padding: 12px 16px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: .9rem;
  color: var(--gray-800);
  background: white;
  transition: var(--transition);
  outline: none;
  width: 100%;
}
.form-group input:focus,
.form-group select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0,102,173,.1);
}
.form-group input.error,
.form-group select.error { border-color: #ef4444; }

.form-error {
  font-size: .78rem;
  color: #ef4444;
  font-weight: 500;
  min-height: 18px;
}

.form-privacy {
  text-align: center;
  font-size: .75rem;
  color: var(--gray-400);
  margin-top: 12px;
}
.form-privacy a { color: var(--blue); }

.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: 40px;
}
.form-success.show { display: flex; animation: fadeUp .4s ease; }
.form-success h3   { color: var(--blue); font-size: 1.2rem; }
.form-success p    { color: var(--gray-600); }

/* ── FOOTER ─────────────────────────────────── */
.footer {
  background: var(--gray-800);
  color: rgba(255,255,255,.7);
  padding: 64px 0 0;
  position: relative;
  overflow: hidden;
}
.footer-pattern {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='36' viewBox='0 0 40 36' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M20 2 L38 34 L2 34 Z' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='1'/%3E%3Cpath d='M20 12 L32 32 L8 32 Z' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='1'/%3E%3C/svg%3E") repeat;
  pointer-events: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
  position: relative;
  z-index: 1;
}

.footer-desc {
  font-size: .8rem;
  line-height: 1.7;
  margin-top: 16px;
  color: rgba(255,255,255,.5);
}

.footer-col-title {
  font-size: .8rem;
  font-weight: 700;
  color: white;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links a, .footer-links span {
  font-size: .825rem;
  color: rgba(255,255,255,.55);
  transition: var(--transition);
}
.footer-links a:hover { color: white; padding-left: 4px; }

.footer-links--contact li {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-links--contact svg { flex-shrink: 0; opacity: .6; }

.footer-rvoe-text {
  font-size: .8rem;
  color: rgba(255,255,255,.5);
  margin-bottom: 16px;
  line-height: 1.6;
}
.footer-rvoe-badge {
    text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: .8rem;
  font-weight: 600;
  color: white;
}
.footer-rvoe-badge:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.2);
}

.footer-rvoe-badge:visited {
  color: white;
}


.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .78rem;
  color: rgba(255,255,255,.35);
  position: relative;
  z-index: 1;
}
.footer-privacy {
  color: rgba(255,255,255,.35);
  transition: var(--transition);
}
.footer-privacy:hover { color: white; }

/* ── FLOATING WHATSAPP ──────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 60px; height: 60px;
  background: var(--green-wa);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 28px rgba(37,211,102,.4);
  transition: var(--transition);
}
.whatsapp-float:hover {
  background: var(--green-wa-dk);
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 12px 36px rgba(37,211,102,.5);
}

.whatsapp-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--green-wa);
  animation: pulse-ring 2.5s ease-out infinite;
  z-index: -1;
}

/* ── RESPONSIVE ─────────────────────────────── */
@media (max-width: 1024px) {
  .beneficios-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-grid      { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand     { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .hero-container    { grid-template-columns: 1fr; text-align: center; }
  .hero-badge,
  .hero-ctas,
  .hero-trust        { justify-content: center; }
  .hero-visual       { display: none; }

  .preparatoria-grid { grid-template-columns: 1fr; }
  .carreras-grid     { grid-template-columns: 1fr 1fr; }
  .tres-grid         { grid-template-columns: 1fr; }
  .contacto-grid     { grid-template-columns: 1fr; }

  .nav-links { display: none; }
  .hamburger { display: flex; }

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

@media (max-width: 640px) {
  .section { padding: 64px 0; }

  .hero-title { font-size: 1.8rem; }
  .hero-ctas  { flex-direction: column; align-items: center; }
  .hero-trust { flex-direction: column; align-items: center; }

  .beneficios-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  .carreras-grid { grid-template-columns: 1fr; }
  .tres-grid     { grid-template-columns: 1fr; }
  .footer-grid   { grid-template-columns: 1fr 1fr; }

  .preparatoria-ctas  { flex-direction: column; }
  .cta-final-btns     { flex-direction: column; align-items: center; }

  .slider .testimonio-card { min-width: 85vw; }

  .contacto-form { padding: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

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

@media (max-width: 400px) {
  .beneficios-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid     { grid-template-columns: 1fr; }
}