/* ==========================================================================
   PULSELENS — MOBILE-FIRST RESPONSIVE ARCHITECTURE (css/responsive.css)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. MOBILE SCREEN CONFIGURATIONS (Default / Small Mobile)
   -------------------------------------------------------------------------- */
@media (max-width: 576px) {
  .nav {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
  }
  
  .hero {
    padding: var(--space-lg) var(--space-sm);
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions button {
    width: 100%;
  }

  .form-actions {
    flex-direction: column;
    width: 100%;
  }

  .form-actions button {
    width: 100%;
  }

  .input-grid {
    grid-template-columns: 1fr;
  }
  
  .quick-stats {
    grid-template-columns: 1fr;
  }

  .summary-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* --------------------------------------------------------------------------
   2. TABLET MEDIA QUERIES
   -------------------------------------------------------------------------- */
@media (min-width: 577px) and (max-width: 768px) {
  .nav-links {
    gap: 0.75rem;
  }

  .summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .quick-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --------------------------------------------------------------------------
   3. LAPTOP & SMALL DESKTOP MEDIA QUERIES
   -------------------------------------------------------------------------- */
@media (min-width: 769px) and (max-width: 1024px) {
  .analytics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --------------------------------------------------------------------------
   4. LARGE DESKTOP & WIDESCREEN OPTIMIZATIONS
   -------------------------------------------------------------------------- */
@media (min-width: 1025px) {
  /* 12-Column Layout Utilities if needed */
  .grid-12 {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-md);
  }
}

/* --------------------------------------------------------------------------
   5. ULTRA-WIDE SCREENS
   -------------------------------------------------------------------------- */
@media (min-width: 1800px) {
  :root {
    --container-max-width: 1600px;
  }
}