/* ========================================
   TECH SEM CRISE - RESPONSIVIDADE
   Mobile-First Approach
   ======================================== */

/* ========================================
   MOBILE (até 640px)
   ======================================== */

@media (max-width: 767px) {
  /* Tipografia */
  h1 {
    font-size: var(--font-size-2xl);
  }

  h2 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-xl);
  }

  h3 {
    font-size: var(--font-size-lg);
  }

  /* Cabeçalho */
  .navbar {
    padding: var(--spacing-md) 0;
  }

  .logo {
    font-size: var(--font-size-lg);
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-md);
    list-style: none;
    z-index: 99;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a::after {
    display: none;
  }

  .search-bar-header {
    display: none;
    margin-left: 0;
    margin-right: 0;
    width: 100%;
    order: -1;
    max-width: none;
  }

  .nav-menu.search-open ~ .search-bar-header {
    display: flex;
  }

  .menu-toggle {
    display: block;
    order: 2;
  }

  /* Hero */
  .hero {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .hero h1 {
    font-size: var(--font-size-2xl);
  }

  .hero .subtitle {
    font-size: var(--font-size-lg);
  }

  .hero p {
    font-size: var(--font-size-base);
  }

  .search-bar-hero {
    flex-direction: column;
  }

  .search-bar-hero button {
    width: 100%;
  }

  /* Seção */
  .section {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .section-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xl);
  }

  /* Grid */
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Cards */
  .card-image {
    height: 150px;
  }

  .card-content {
    padding: var(--spacing-md);
  }

  /* Artigos */
  .article-title {
    font-size: var(--font-size-2xl);
  }

  .article-image {
    height: 250px;
  }

  .article-meta {
    gap: var(--spacing-lg);
    font-size: var(--font-size-xs);
  }

  /* Sidebar (ocultar em mobile) */
  .article-sidebar {
    display: none;
  }

  /* Tabelas responsivas */
  table {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
  }

  table th,
  table td {
    padding: var(--spacing-sm) var(--spacing-xs);
  }

  /* Rodapé */
  footer {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  /* Botão voltar ao topo */
  .back-to-top {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 44px;
    height: 44px;
    font-size: var(--font-size-base);
  }

  /* Formulários */
  input,
  textarea,
  select,
  button {
    font-size: 16px; /* Previne zoom automático no iOS */
  }
}

/* ========================================
   TABLET (768px - 1023px)
   ======================================== */

@media (min-width: 768px) and (max-width: 1023px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-menu {
    gap: var(--spacing-lg);
  }

  .hero h1 {
    font-size: var(--font-size-3xl);
  }

  .article-title {
    font-size: var(--font-size-3xl);
  }

  .search-bar-header {
    margin-right: var(--spacing-md);
  }

  .search-bar-header input {
    width: 150px;
  }
}

/* ========================================
   DESKTOP (1024px+)
   ======================================== */

@media (min-width: 1024px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .menu-toggle {
    display: none;
  }

  .search-bar-header {
    display: flex;
  }

  /* Artigos com sidebar */
  .article-container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-2xl);
  }

  .article-sidebar {
    display: block;
  }

  .article-sidebar-sticky {
    position: sticky;
    top: 100px;
  }

  .article-main {
    min-width: 0;
  }
}

/* ========================================
   EXTRA LARGE (1400px+)
   ======================================== */

@media (min-width: 1400px) {
  .article-container {
    grid-template-columns: 1fr 350px;
  }

  .hero h1 {
    font-size: var(--font-size-4xl);
  }

  .hero p {
    font-size: var(--font-size-lg);
  }
}

/* ========================================
   SMALL DEVICES (até 360px)
   ======================================== */

@media (max-width: 360px) {
  :root {
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
  }

  h1 {
    font-size: var(--font-size-xl);
  }

  h2 {
    font-size: var(--font-size-lg);
  }

  .navbar {
    flex-wrap: wrap;
  }

  .logo-icon {
    width: 24px;
    height: 24px;
  }

  .hero {
    padding: var(--spacing-xl) var(--spacing-sm);
  }

  .hero h1 {
    font-size: var(--font-size-xl);
  }

  .search-bar-hero input {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .card-content {
    padding: var(--spacing-md);
  }

  .article-meta {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }
}

/* ========================================
   IMAGENS RESPONSIVAS
   ======================================== */

@media (max-width: 640px) {
  .article-image {
    height: 250px;
    margin: var(--spacing-lg) calc(-1 * var(--spacing-md));
    border-radius: 0;
    width: calc(100% + 2 * var(--spacing-md));
  }

  .card-image {
    height: 180px;
  }
}

/* ========================================
   IMPRESSÃO
   ======================================== */

@media print {
  header,
  footer,
  .search-bar-header,
  .menu-toggle,
  .theme-toggle,
  .back-to-top,
  .article-sidebar,
  .related-articles,
  [role="banner"] {
    display: none;
  }

  body {
    background-color: white;
    color: black;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  .article-container {
    grid-template-columns: 1fr;
  }

  .container {
    max-width: 100%;
  }

  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    page-break-after: avoid;
  }

  p,
  li,
  dt,
  dd {
    orphans: 3;
    widows: 3;
  }
}

/* ========================================
   LIGHT BOX / MODAL RESPONSIVO
   ======================================== */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========================================
   OBSERVAÇÃO: SUPORTE A DIFERENTES DPIs
   ======================================== */

@media (-webkit-min-device-pixel-ratio: 2),
  (min-resolution: 192dpi) {
  /* Imagens em alta DPI */
  img {
    image-rendering: -webkit-optimize-contrast;
  }
}

/* ========================================
   DARK MODE EM MOBILE
   ======================================== */

@media (max-width: 767px) {
  [data-theme="dark"] .navbar {
    background-color: var(--bg-secondary);
  }

  [data-theme="dark"] .nav-menu {
    background-color: var(--bg-secondary);
  }
}

/* Correção: ocultar formulário de busca do header no mobile */
@media (max-width: 767px) {
  .search-form-header {
    display: none;
  }
}