:root {
  --primary: #2F5468;
  --primary-dark: #203A47;
  --accent: #E83837;
  --bg: #f4f5fb;
  --muted: #6b7280;
  --border: #d9dee7;
}

/* ===== BASE ===== */
body {
  margin: 0;
  background: var(--bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--primary-dark);
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ===== HEADER ===== */

/* ===== STRIP CON DEGRADADO (igual que home) ===== */
.course-hero-strip {
  padding: 36px 0 52px;
  background: linear-gradient(
    120deg,
    #2F5468 0%,
    #4A7C8B 40%,
    #ffffff 90%
  );
}

.curso-breadcrumb {
  display: inline-block;
  margin-bottom: 18px;
  font-size: 14px;
  color: #e4f8ff;
  opacity: 0.9;
}

.curso-breadcrumb:hover {
  opacity: 1;
}

.curso-hero-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 26px 28px;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 24px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.curso-hero-info h1 {
  margin: 4px 0 10px;
  font-size: 32px;
  color: var(--primary-dark);
}

.curso-hero-info p {
  margin: 0 0 14px;
  color: var(--muted);
}

.curso-etiqueta {
  color: var(--accent);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  font-size: 13px;
  padding: 5px 12px;
  border-radius: 999px;
  background: #eef4f8;
  color: var(--primary-dark);
}

.curso-hero-image {
  border-radius: 16px;
  width: 100%;
  height: 210px;
  background-size: cover;
  background-position: center;
}

/* ===== LAYOUT INFERIOR ===== */
main {
  padding: 32px 0 40px;
}

.curso-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 24px;
}

.curso-main {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.curso-block {
  background: #ffffff;
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 20px 20px 18px;
}

.curso-block h2 {
  margin: 0 0 10px;
  font-size: 20px;
  color: var(--primary-dark);
}

.curso-block p {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--muted);
}

.curso-block ul {
  margin: 6px 0 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--muted);
}

.curso-block ul li + li {
  margin-top: 4px;
}

/* ===== BLOQUE INSCRIPCIÓN ===== */
.curso-inscripcion {
  background: #ffffff;
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 20px 20px 22px;
  align-self: flex-start;
}

.curso-inscripcion h3 {
  margin: 0 0 8px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.curso-precio {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 2px;
  color: var(--primary-dark);
}

.curso-inscripcion p {
  font-size: 14px;
  margin: 4px 0;
  color: var(--muted);
}

.curso-inscripcion p strong {
  color: var(--primary-dark);
}

.btn-comprar {
  display: block;
  width: 100%;
  margin-top: 18px;
  padding: 14px;
  border-radius: 12px;
  border: none;
  background: var(--accent);
  color: #ffffff;
  font-size: 16px;
  cursor: pointer;
}

.btn-comprar:hover {
  filter: brightness(1.05);
}

.curso-inscripcion-nota {
  font-size: 12px;
  margin-top: 10px;
  color: var(--muted);
}

/* ===== FOOTER ===== */
footer {
  padding: 18px 0 24px;
  font-size: 13px;
  text-align: center;
  color: var(--muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .curso-hero-card {
    grid-template-columns: 1fr;
  }

  .curso-hero-image {
    height: 180px;
  }

  .curso-layout {
    grid-template-columns: 1fr;
  }

  .curso-inscripcion {
    order: -1;
  }
}

/* ===== FOOTER CTA ===== */
.footer-cta {
  margin-top: 60px;
  margin-bottom: 0;
}

.footer-cta-content {
  background: linear-gradient(120deg, #1f3f4f, #2f5468);
  padding: 40px 36px;
  border-radius: 24px;
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  gap: 40px;
}

.footer-cta-left h2 {
  margin: 0 0 12px;
  font-size: 24px;
  font-weight: 700;
}

.footer-cta-left p {
  margin: 0 0 18px;
  font-size: 15px;
  opacity: 0.95;
}

.footer-cta-actions {
  display: flex;
  gap: 16px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.footer-mail {
  background: #ffffff;
  color: #1f3f4f;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
}

.footer-btn-info {
  border: 2px solid #ffffff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  color: #ffffff;
}

.footer-cta-right h3 {
  margin-top: 6px;
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
}

.footer-cta-right p {
  margin: 4px 0;
  font-size: 14px;
  opacity: 0.95;
}

/* Footer final */
.footer-final {
  text-align: center;
  font-size: 14px;
  padding: 22px 0 32px;
  color: var(--muted);
}

/* Botón <a> que se ve como botón rojo */
.comprar-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 14px 0;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff !important;
  font-size: 16px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-weight: 500;
}

.comprar-btn:hover {
  background: #d83232; /* tono más oscuro */
}