/* ===== Reseteo de Estilos ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===== Cuerpo (Body) ===== */
body {
  min-height: 100vh;
  background-color: #0a1628;
  display: flex;
  flex-direction: column;
  font-family: Arial, Helvetica, sans-serif;
}

/* ===== Encabezado / Banner ===== */
header {
  width: 100%;
  background-color: #ff0000;
  /* Carmesí */
}

.banner {
  padding: 18px 24px;
  text-align: center;
}

.banner h1 {
  color: #ffffff;
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ===== Contenido Principal (Main) ===== */
main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 32px 16px;
}

/* ===== Contenedor del Iframe — 16:9 responsivo ===== */
.iframe-wrapper {
  width: 100%;
  max-width: 960px;
  position: relative;
  /* Truco para relación de aspecto 16:9 */
  padding-top: 56.25%;
}

.iframe-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  background-color: #000000;
}