/* ========================================
   TECH SEM CRISE - COMPONENTES
   ======================================== */

/* ========================================
   CABEÇALHO
   ======================================== */

header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: relative; /* Alterado de sticky para relative */
  transition: box-shadow var(--transition-base);
}

header.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  max-width: 1200px;
  width: calc(100% - 40px);
  margin-inline: auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--blue-primary);
  text-decoration: none;
}

.logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--blue-primary), var(--blue-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: var(--font-size-sm);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
  flex: 1;
  margin-left: var(--spacing-3xl);
  list-style: none;
}

.nav-menu a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: var(--font-size-base);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--blue-primary);
  transition: width var(--transition-fast);
}

.nav-menu a:hover::after {
  width: 100%;
}

.nav-menu a:hover {
  color: var(--blue-primary);
  text-decoration: none;
}

/* Busca no cabeçalho */
.search-bar-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: auto;
  margin-right: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.search-bar-header:focus-within {
  border-color: var(--blue-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-bar-header input {
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 0;
  margin: 0;
  width: 200px;
  font-size: var(--font-size-sm);
}

.search-bar-header input::placeholder {
  color: var(--text-tertiary);
}

.search-bar-header input:focus {
  outline: none;
  box-shadow: none;
}

.search-bar-header button {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}
.search-form-header {
  display: flex;
  align-items: center;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}



.search-submit-header {
  background-color: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 150ms ease-in-out, border-color 150ms ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: var(--spacing-xs);
}

.search-submit-header:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--border-color);
}

.search-submit-header .icon-search::before {
  content: '';
  display: block;
  width: 18px;
  height: 18px;
  background-color: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'%3E%3C/line%3E%3C/svg%3E") no-repeat center;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'%3E%3C/line%3E%3C/svg%3E") no-repeat center;
}

/* Toggle tema */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  padding: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.theme-toggle:hover {
  transform: rotate(20deg);
}

/* Menu mobile */
.menu-toggle {
  display: none; /* Escondido por padrão (desktop-first) */
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

/* ========================================
   CARDS
   ======================================== */

.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-color);
  transform: translateY(-2px);
}

.card-image {
  width: 100%;
  height: 200px;
  background-color: var(--bg-tertiary);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* Aplicado diretamente à imagem */
}

.card-content {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-category {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--blue-primary);
  margin-bottom: var(--spacing-sm);
  width: fit-content;
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  line-height: var(--line-height-tight);
}

.card-title a {
  color: inherit;
  text-decoration: none;
}

.card-title a:hover {
  color: var(--blue-primary);
}

.card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  flex: 1;
  line-height: var(--line-height-normal);
}

.card-meta {
  display: flex;
  gap: var(--spacing-lg);
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-light);
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Card de categoria */
.category-card {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.category-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  display: block;
}

.category-card h3 {
  margin-bottom: var(--spacing-sm);
}

.category-card p {
  font-size: var(--font-size-sm);
  margin: 0;
}

/* ========================================
   HERO/BANNER
   ======================================== */

.hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-3xl) var(--spacing-md);
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.hero .subtitle {
  font-size: var(--font-size-xl);
  color: var(--blue-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.search-bar-hero {
  display: flex;
  gap: var(--spacing-sm);
  max-width: 500px;
  margin: 0 auto;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm);
}

.search-bar-hero input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
}

.search-bar-hero input::placeholder {
  color: var(--text-tertiary);
}

.search-bar-hero button {
  padding: var(--spacing-sm) var(--spacing-lg);
}

/* ========================================
   SEÇÃO
   ======================================== */

.section {
  padding: var(--spacing-3xl) var(--spacing-md);
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-2xl);
  text-align: center;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

/* ========================================
   BREADCRUMB
   ======================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--blue-primary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb [aria-current="page"] {
  color: var(--text-primary);
  font-weight: 500;
}

.breadcrumb-separator {
  color: var(--text-tertiary);
  margin: 0 var(--spacing-xs);
}

/* ========================================
   RODAPÉ
   ======================================== */

footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-3xl);
  padding: var(--spacing-3xl) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-column h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-md);
}

.footer-column ul {
  list-style: none;
  margin: 0;
}

.footer-column li {
  margin-bottom: var(--spacing-sm);
}

.footer-column a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-column a:hover {
  color: var(--blue-primary);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: var(--text-tertiary);
}

.footer-logo {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

/* ========================================
   CAIXAS ESPECIAIS
   ======================================== */

.box-note, .box-alert, .box-tip {
  padding: var(--spacing-lg);
  border-left: 4px solid;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  background-color: var(--bg-tertiary);
}

.box-note {
  border-left-color: var(--blue-primary);
}

.box-note strong {
  color: var(--blue-primary);
}

.box-alert {
  border-left-color: #DC2626;
}

.box-alert strong {
  color: #DC2626;
}

.box-tip {
  border-left-color: var(--green-primary);
}

.box-tip strong {
  color: var(--green-primary);
}

.box-note p, .box-alert p, .box-tip p {
  color: var(--text-secondary);
  margin: 0;
}

/* ========================================
   ARTIGOS E CONTEÚDO
   ======================================== */

.article-header {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--border-color);
}

.article-title {
  font-size: var(--font-size-4xl);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
}

.article-meta {
  display: flex;
  gap: var(--spacing-2xl);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  flex-wrap: wrap;
  align-items: center;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.article-category {
  display: inline-block;
  background-color: var(--blue-light);
  color: var(--blue-dark);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.article-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-2xl);
  background-color: var(--bg-tertiary);
}

.article-body {
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: var(--spacing-lg) 0;
  display: block;
}

/* Table of contents */
.article-toc {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.article-toc h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-md);
  margin-top: 0;
}

.article-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-toc li {
  margin-bottom: var(--spacing-sm);
}

.article-toc a {
  color: var(--blue-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
}

.article-toc a:hover {
  text-decoration: underline;
}

/* Related articles */
.related-articles {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.related-articles h3 {
  margin-top: 0;
}

.related-articles ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.related-articles li {
  margin-bottom: var(--spacing-md);
}

.related-articles a {
  color: var(--blue-primary);
  font-weight: 500;
}

.related-articles a:hover {
  text-decoration: underline;
}

/* ========================================
   FAQ
   ======================================== */

.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0;
}

.faq-item:first-child {
  padding-top: 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  user-select: none;
  position: relative;
}

.faq-question::before {
  content: "▶";
  display: inline-block;
  width: 1em;
  text-align: center;
  transition: transform var(--transition-base);
  color: var(--blue-primary);
  font-size: var(--font-size-sm);
}

.faq-item.active .faq-question::before {
  transform: rotate(90deg);
}

.faq-answer {
  display: none;
  padding: var(--spacing-lg) 0 0 1.5em;
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.faq-item.active .faq-answer {
  display: block;
}

/* ========================================
   BOTÃO VOLTAR AO TOPO
   ======================================== */

.back-to-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 48px;
  height: 48px;
  background-color: var(--blue-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: all var(--transition-base);
  z-index: 99;
  box-shadow: var(--shadow-lg);
}

.back-to-top:hover {
  background-color: var(--blue-dark);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  display: flex;
}

/* ========================================
   SKIP LINK
   ======================================== */

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--blue-primary);
  color: white;
  padding: 8px;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

/* ========================================
   BOTÕES
   ======================================== */

.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--blue-primary);
  border-color: var(--blue-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--blue-dark);
  border-color: var(--blue-dark);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--text-secondary);
}