/*
 * mobile.css — Overrides responsivos (mobile-first)
 * Lavoisier — Laboratório Visual de Química
 */

/* -----------------------------------------------------------------------
   Breakpoints de referência:
   sm:  640px
   md:  768px
   lg:  1024px
----------------------------------------------------------------------- */

/* -----------------------------------------------------------------------
   Header — mobile
----------------------------------------------------------------------- */
@media (max-width: 639px) {
  .header-nav {
    display: none;
  }

  .hamburger {
    display: flex;
    margin-left: auto;
  }

  .header-inner {
    gap: var(--space-4);
    padding: 0 var(--space-4);
  }
}

/* -----------------------------------------------------------------------
   Páginas — padding reduzido
----------------------------------------------------------------------- */
@media (max-width: 639px) {
  .page,
  .module-page {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
    padding-top: var(--space-6);
  }

  .home-hero {
    padding: var(--space-10) 0 var(--space-8);
  }

  .home-hero-title {
    font-size: var(--text-xl);
  }

  .home-hero-desc {
    font-size: var(--text-base);
  }
}

/* -----------------------------------------------------------------------
   Module grid — single col em mobile
----------------------------------------------------------------------- */
@media (max-width: 479px) {
  .module-grid {
    grid-template-columns: 1fr;
  }
}

/* -----------------------------------------------------------------------
   Element detail — empilhar em mobile
----------------------------------------------------------------------- */
@media (max-width: 639px) {
  .element-detail {
    grid-template-columns: 1fr;
  }

  .element-detail-symbol {
    align-self: center;
    justify-self: center;
  }
}

/* -----------------------------------------------------------------------
   Tabela periódica — escala reduzida
----------------------------------------------------------------------- */
@media (max-width: 900px) {
  .periodic-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--space-4);
  }
}

/* -----------------------------------------------------------------------
   Reaction equation — empilhar
----------------------------------------------------------------------- */
@media (max-width: 639px) {
  .reaction-equation {
    font-size: var(--text-base);
    gap: var(--space-2);
  }

  .mass-balance {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .mass-balanced {
    font-size: var(--text-lg);
  }
}

/* -----------------------------------------------------------------------
   Sim panel — single col
----------------------------------------------------------------------- */
@media (max-width: 639px) {
  .sim-slider {
    width: 120px;
  }

  .sim-controls {
    gap: var(--space-4);
  }
}

/* -----------------------------------------------------------------------
   Touch — aumenta alvos de toque
----------------------------------------------------------------------- */
@media (hover: none) and (pointer: coarse) {
  .nav-btn,
  .btn,
  .exercise-option,
  .atom-btn,
  .element-cell {
    min-height: 44px;
  }

  .element-cell {
    min-width: 44px;
    min-height: 44px;
  }
}

/* -----------------------------------------------------------------------
   Preferência de movimento reduzido
----------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .loading-orbit { animation: none !important; }
}

/* -----------------------------------------------------------------------
   Print
----------------------------------------------------------------------- */
@media print {
  .app-header,
  .sidebar,
  .sidebar-overlay,
  .toast-region,
  .skip-link {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .module-page, .page {
    padding: 0;
    max-width: 100%;
  }
}