/* ==========================================================================
   ZOMBIE KEYBOARD — RESPONSIVE STYLESHEET
   ========================================================================== */

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    gap: 1.25rem;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ROTATE PHONE OVERLAY FOR MOBILE PORTRAIT */
.rotate-phone-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 2rem;
  text-align: center;
}

.rotate-phone-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.rotate-card {
  background: var(--bg-card);
  border: 1px solid var(--accent-green);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 400px;
}

.rotate-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}