:root {
  --blue: #0284c8;
  --orange: #f59e0b;
  --dark: #0f172a;
  --light: #f8fafc;
  --gray: #64748b;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: #1e2937;
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--blue);
  color: white;
  padding: 8px 16px;
  z-index: 9999;
  transition: top 0.3s;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 0;
}

/* HEADER */
.header {
  background: white;
  border-bottom: 1px solid #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-image {
  height: 85px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(90deg, var(--blue), var(--orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.logo-subtitle {
  font-size: 10px;
  letter-spacing: 1px;
  color: #64748b;
  margin-top: -4px;
}

.btn-aula {
  background: linear-gradient(to right, var(--blue), var(--orange));
  color: white;
  padding: 14px 32px;
  border-radius: 9999px;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.3s ease;
  box-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.4);
}

.btn-aula:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 30px -8px rgba(245, 158, 11, 0.5);
  brightness: 1.1;
}

/* HERO BANNER */
.hero {
  height: 100vh;
  min-height: 700px;
  background-image: linear-gradient(rgba(15, 23, 42, 0.68), rgba(15, 23, 42, 0.78)), 
                    url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?q=80&w=2112');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  display: flex;
  align-items: center;
  color: white;
  text-align: center;
}

.hero-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-title span {
  background: linear-gradient(90deg, #60a5fa, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.35rem;
  max-width: 680px;
  margin: 0 auto 2.5rem;
  opacity: 0.95;
}

.btn-cta {
  background: white;
  color: #0f172a;
  padding: 18px 40px;
  font-size: 1.15rem;
  font-weight: 600;
  border-radius: 9999px;
  text-decoration: none;
  display: inline-block;
  transition: all 0.4s ease;
}

.btn-cta:hover {
  background: #fefce8;
  transform: scale(1.05);
}

/* PLANES SECTION */
.planes-section {
  padding: 120px 0;
  background: #f8fafc;
}

.section-title {
  text-align: center;
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--dark);
}

.section-subtitle {
  text-align: center;
  color: var(--gray);
  font-size: 1.25rem;
  margin-bottom: 4rem;
}

.plans-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 2.5rem;
  padding: 0 2rem;
}

.plan-card {
  background: white;
  border-radius: 28px;
  padding: 3rem 2.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid #f1f5f9;
  position: relative;
}

.plan-card:hover {
  transform: translateY(-15px);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.plan-card.recommended {
  border: 3px solid var(--orange);
  transform: scale(1.04);
}

.recommended-badge {
  position: absolute;
  top: -14px;
  right: 30px;
  background: var(--orange);
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 24px;
  border-radius: 9999px;
}

.plan-name {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.plan-type {
  color: var(--orange);
  font-weight: 500;
}

.plan-price {
  margin: 2rem 0;
  font-size: 4.2rem;
  font-weight: 800;
  line-height: 1;
}

.plan-price span {
  font-size: 1.1rem;
  font-weight: 500;
  color: #64748b;
}

.plan-features {
  list-style: none;
  margin: 2.5rem 0;
}

.plan-features li {
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.1rem;
  color: #334155;
}

.plan-features li i {
  color: #10b981;
  font-size: 1.3rem;
}

.btn-plan {
  width: 100%;
  padding: 16px;
  border-radius: 16px;
  font-weight: 600;
  font-size: 1.1rem;
  text-align: center;
  text-decoration: none;
  display: block;
  margin-top: 1rem;
  transition: all 0.3s ease;
}

.btn-plan-group {
  background: #0f172a;
  color: white;
}

.btn-plan-group:hover {
  background: #1e2937;
}

.btn-plan-individual {
  background: linear-gradient(to right, var(--blue), var(--orange));
  color: white;
}

.btn-plan-individual:hover {
  opacity: 0.95;
  transform: translateY(-2px);
}

/* QUÉ ES INGLÉSMÁS */
.about-section {
  padding: 110px 0;
  background: white;
  text-align: center;
}

.about-content {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 2rem;
}

.about-title {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
}

.about-text {
  font-size: 1.35rem;
  line-height: 1.75;
  color: #475569;
}

/* FOOTER */
.footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 90px 0 40px;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 4rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}

.footer-logo .logo-image {
  height: 46px;
  width: auto;
}

.footer-logo h3 {
  font-size: 28px;
  background: linear-gradient(90deg, #60a5fa, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.footer-contact p {
  margin-bottom: 8px;
}

.footer-legal a {
  color: #cbd5e1;
  text-decoration: none;
  display: block;
  margin-bottom: 12px;
  transition: color 0.3s;
}

.footer-legal a:hover {
  color: var(--orange);
}

.footer-bottom {
  text-align: center;
  margin-top: 80px;
  padding-top: 30px;
  border-top: 1px solid #1e2937;
  font-size: 0.85rem;
  color: #64748b;
}

/* Responsive */
@media (max-width: 768px) {
  .plans-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
}