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

body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #f5f5f5;
  background: radial-gradient(circle at top left, #1f2933 0%, #020617 50%, #000000 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  text-align: center;
  padding: 3rem 2rem;
  max-width: 480px;
  width: 90%;
  background: rgba(15, 23, 42, 0.88);
  border-radius: 20px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.logo-area {
  margin-bottom: 2.5rem;
}

.logo {
  max-width: 120px;   /* logo cuadrado */
  margin-bottom: 1.2rem;
  border-radius: 16px; /* opcional: esquinas suaves al cuadrado */
}

h1 {
  font-size: 1.6rem;
  margin-bottom: 0.6rem;
}

.logo-area p {
  font-size: 0.95rem;
  color: #cbd5f5;
}

/* Botón de descarga */
.download-btn {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.9rem 2.6rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: #f9fafb;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  letter-spacing: 0.03em;
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.45);
  position: relative;
  overflow: hidden;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}

.download-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -40%;
  width: 40%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.35),
    transparent
  );
  transform: skewX(-25deg);
  transition: transform 0.5s ease-in-out;
}

.download-btn:hover::before {
  transform: translateX(250%) skewX(-25deg);
}

.download-btn:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.7);
  background: linear-gradient(135deg, #1d4ed8, #0284c7);
}

.download-btn:active {
  transform: translateY(1px) scale(0.99);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.85);
}

.helper-text {
  margin-top: 0.8rem;
  font-size: 0.8rem;
  color: #9ca3af;
}

footer {
  margin-top: 2.2rem;
  font-size: 0.75rem;
  color: #9ca3af;
}

@media (max-width: 480px) {
  .container {
    padding: 2.4rem 1.6rem;
  }

  h1 {
    font-size: 1.4rem;
  }

  .download-btn {
    width: 100%;
  }
}