/* ===================================
   RESET E VARIÁVEIS GLOBAIS
   =================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #1f2937;
  --secondary-color: #111827;
  --accent-color: #ef4444;
  --text-color: #ffffff;
  --text-secondary: #d1d5db;
  --border-color: #374151;
  --bg-color: #0f172a;
  --card-bg: #1f1f1f;
  --hover-bg: #334155;
}

/* Tema YouTube-like */
html[data-theme="youtube"],
html.theme-youtube {
  --primary-color: #ffffff;
  --secondary-color: #f5f5f5;
  --accent-color: #ff0000;
  --text-color: #030303;
  --text-secondary: #606060;
  --border-color: #e0e0e0;
  --bg-color: #ffffff;
  --card-bg: #f9f9f9;
  --hover-bg: #f0f0f0;
}

/* Tema Dark (Padrão) */
html[data-theme="dark"],
html.theme-dark,
html {
  --primary-color: #1f2937;
  --secondary-color: #111827;
  --accent-color: #ef4444;
  --text-color: #ffffff;
  --text-secondary: #d1d5db;
  --border-color: #374151;
  --bg-color: #0f172a;
  --card-bg: #1f1f1f;
  --hover-bg: #334155;
}

/* Tema Light */
html[data-theme="light"],
html.theme-light {
  --primary-color: #f3f4f6;
  --secondary-color: #ffffff;
  --accent-color: #dc2626;
  --text-color: #1f2937;
  --text-secondary: #6b7280;
  --border-color: #e5e7eb;
  --bg-color: #f9fafb;
  --card-bg: #ffffff;
  --hover-bg: #f3f4f6;
}

/* ===================================
   ESTILOS GLOBAIS
   =================================== */

html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  padding: 10px 20px;
  transition: all 0.3s ease;
  font-weight: 600;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

input, textarea {
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 10px 15px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* ===================================
   NAVBAR
   =================================== */

nav {
  background-color: var(--primary-color);
  border-bottom: 2px solid var(--border-color);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
}

.navbar-logo img {
  height: 40px;
  width: auto;
}

.navbar-center {
  display: flex;
  gap: 30px;
  align-items: center;
  flex: 1;
  justify-content: center;
}

.navbar-center a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.3s ease;
}

.navbar-center a:hover,
.navbar-center a.active {
  color: var(--accent-color);
}

.navbar-search {
  display: flex;
  align-items: center;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 25px;
  padding: 8px 15px;
  width: 250px;
}

.navbar-search input {
  background: none;
  border: none;
  color: var(--text-color);
  flex: 1;
  padding: 0;
}

.navbar-search input::placeholder {
  color: var(--text-secondary);
}

.navbar-actions {
  display: flex;
  gap: 15px;
  align-items: center;
}

.theme-switcher {
  display: flex;
  gap: 8px;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 4px;
}

.theme-btn {
  width: 32px;
  height: 32px;
  border-radius: 16px;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: all 0.3s ease;
  background-color: transparent;
  color: var(--text-secondary);
}

.theme-btn.active {
  background-color: var(--accent-color);
  color: white;
}

.theme-btn:hover {
  background-color: var(--hover-bg);
}

.btn-login, .btn-comprar {
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-login {
  background-color: transparent;
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
}

.btn-login:hover {
  background-color: var(--accent-color);
  color: white;
}

.btn-comprar {
  background-color: var(--accent-color);
  color: white;
}

.btn-comprar:hover {
  background-color: #dc2626;
}

/* ===================================
   CONTAINER E LAYOUT
   =================================== */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 60px 20px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 40px;
  text-align: center;
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  padding: 100px 20px;
  text-align: center;
  border-bottom: 3px solid var(--accent-color);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-color);
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===================================
   GRID DE ARTIGOS/POSTS
   =================================== */

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.article-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
  border-color: var(--accent-color);
}

.article-cover {
  width: 100%;
  height: 200px;
  background-color: var(--hover-bg);
  object-fit: cover;
  display: block;
}

.article-content {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-category {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
  width: fit-content;
}

.article-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-color);
  line-height: 1.4;
}

.article-excerpt {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 15px;
  flex: 1;
  line-height: 1.5;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  padding-top: 15px;
}

.article-author {
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-author-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.75rem;
}

.article-date {
  display: flex;
  align-items: center;
  gap: 5px;
}

.article-views {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* ===================================
   VIDEO PLAYER
   =================================== */

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 12px;
  margin-bottom: 30px;
  background-color: #000;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ===================================
   PÁGINA DE POST
   =================================== */

.post-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
}

.post-header {
  margin-bottom: 40px;
}

.post-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-color);
}

.post-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--text-secondary);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
}

.post-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.post-body {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-color);
  margin-bottom: 40px;
}

.post-body h2 {
  font-size: 1.8rem;
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--text-color);
}

.post-body h3 {
  font-size: 1.4rem;
  margin-top: 25px;
  margin-bottom: 12px;
  color: var(--text-color);
}

.post-body p {
  margin-bottom: 15px;
}

.post-body ul, .post-body ol {
  margin-left: 20px;
  margin-bottom: 15px;
}

.post-body li {
  margin-bottom: 8px;
}

.post-body code {
  background-color: var(--card-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  color: var(--accent-color);
}

.post-body blockquote {
  border-left: 4px solid var(--accent-color);
  padding-left: 20px;
  margin: 20px 0;
  font-style: italic;
  color: var(--text-secondary);
}

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

footer {
  background-color: var(--primary-color);
  border-top: 2px solid var(--border-color);
  padding: 60px 20px 20px;
  margin-top: 80px;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-color);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section a {
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--accent-color);
}

.footer-social {
  display: flex;
  gap: 15px;
  margin-top: 15px;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
  transition: all 0.3s ease;
}

.social-icon:hover {
  background-color: var(--accent-color);
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===================================
   PAGINATION
   =================================== */

.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 40px 0;
}

.pagination a, .pagination span {
  padding: 10px 15px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-color);
  transition: all 0.3s ease;
}

.pagination a:hover {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}

.pagination .active {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}

/* ===================================
   RESPONSIVIDADE
   =================================== */

@media (max-width: 768px) {
  .navbar-container {
    height: auto;
    flex-wrap: wrap;
    padding: 15px 20px;
  }

  .navbar-center {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 15px;
    margin-top: 15px;
  }

  .navbar-center.active {
    display: flex;
  }

  .navbar-search {
    width: 100%;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

  .post-title {
    font-size: 1.8rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

@media (max-width: 480px) {
  .navbar-logo {
    font-size: 1.2rem;
  }

  .navbar-actions {
    gap: 10px;
  }

  .btn-login, .btn-comprar {
    padding: 8px 12px;
    font-size: 0.9rem;
  }

  .hero {
    padding: 60px 20px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .post-body {
    font-size: 1rem;
  }
}

/* ===================================
   UTILITÁRIOS
   =================================== */

.text-center {
  text-align: center;
}

.mt-20 {
  margin-top: 20px;
}

.mb-20 {
  margin-bottom: 20px;
}

.hidden {
  display: none !important;
}

.loading {
  opacity: 0.6;
  pointer-events: none;
}