:root {
  --primary: #58a6ff;
  --primary-hover: #4a94e6;
  --primary-transparent: rgba(88, 166, 255, 0.1);
  --secondary: #bc8cff;
  --secondary-hover: #a97aff;
  --success: #3fb950;
  --danger: #f85149;
  --danger-hover: #e63f3f;
  --bg-dark: #0d1117;
  --bg-darker: #010409;
  --bg-darkest: #000000;
  --bg-light: #161b22;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-tertiary: #6e7681;
  --border: #30363d;
  --border-light: #21262d;
  --border-dark: #484f58;
  --shadow: rgba(1, 4, 9, 0.5);
  --shadow-light: rgba(88, 166, 255, 0.15);
  --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 50%;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;
}

/* Reset e Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container Principal */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Efeito de Partículas (Opcional) */
.particles-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
  opacity: 0.8;
}

/* Tipografia Premium */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: var(--space-md);
}

.gradient-text {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-top: var(--space-sm);
  font-weight: 400;
}

/* Navegação Premium */
.smart-nav {
  background-color: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 10px var(--shadow);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
  height: 70px;
}

.logo {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transition: var(--transition);
}

.logo:hover {
  opacity: 0.9;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transition: var(--transition);
  position: relative;
  padding: var(--space-sm) 0;
  font-size: 0.95rem;
}

.nav-links a:hover, 
.nav-links a.active {
  color: var(--primary);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a i {
  font-size: 0.9rem;
}

.nav-actions {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.icon-button {
  background: none;
  border: none;
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}

.icon-button:hover {
  background: var(--primary-transparent);
  color: var(--primary);
}

/* Barra de Pesquisa Premium */
.search-bar {
  height: 0;
  overflow: hidden;
  transition: height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--bg-darker);
  border-bottom: 1px solid var(--border);
}

.search-bar.active {
  height: 72px;
}

.search-container {
  display: flex;
  align-items: center;
  height: 72px;
}

.search-input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-right: none;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--shadow-light);
}

.search-button {
  padding: 0 var(--space-lg);
  height: 100%;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
}

.search-button:hover {
  background: var(--primary-hover);
}

/* Layout do Blog */
.blog-container {
  padding: var(--space-xxl) 0;
  min-height: calc(100vh - 200px);
}

.blog-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: rgba(13, 17, 23, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px var(--shadow);
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.sort-controls label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.sort-controls select {
  background: var(--bg-darker);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b949e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right var(--space-sm) center;
  background-size: 16px;
  padding-right: var(--space-xl);
}

.sort-controls select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--shadow-light);
}

/* Grid de Posts - Design Premium */
.blog-posts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.blog-post {
  background: rgba(13, 17, 23, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.blog-post::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}

.blog-post:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow);
  border-color: var(--border-dark);
}

.blog-post:hover::before {
  opacity: 1;
}

.post-image {
  height: 220px;
  background: var(--bg-darker);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  position: relative;
  overflow: hidden;
}

.post-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(1,4,9,0.1) 0%, rgba(1,4,9,0.8) 100%);
}

.post-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.blog-post:hover .post-image img {
  transform: scale(1.03);
}

.post-content {
  padding: var(--space-lg);
}

.post-meta {
  display: flex;
  justify-content: space-between;
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: var(--space-sm);
  font-weight: 400;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
}

.tag {
  background: var(--primary-transparent);
  color: var(--primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  transition: var(--transition);
}

.tag:hover {
  background: var(--primary);
  color: white;
}

.post-title {
  font-size: 1.4rem;
  margin: var(--space-sm) 0;
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.3;
}

.post-excerpt {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 3; 
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 0.95rem;
  line-height: 1.6;
}

.read-more {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.95rem;
  transition: var(--transition);
}

.read-more:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.read-more i {
  font-size: 0.8rem;
  transition: var(--transition);
}

.read-more:hover i {
  transform: translateX(3px);
}

/* Modal de Novo Post - Design Premium */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(1, 4, 9, 0.9);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 10px 40px var(--shadow);
}

.modal.active .modal-content {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg-dark);
  z-index: 10;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.close-modal {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-xs);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: var(--transition);
}

.close-modal:hover {
  background: var(--primary-transparent);
  color: var(--danger);
}

.modal-body {
  padding: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--shadow-light);
}

.form-group textarea {
  min-height: 200px;
  resize: vertical;
  line-height: 1.6;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

/* Botões Premium */
.cta-button {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
}

.cta-button.primary {
  background: var(--primary);
  color: white;
}

.cta-button.primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-light);
}

.cta-button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.cta-button.secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-dark);
  transform: translateY(-2px);
}

/* Estados de Carregamento e Vazio */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-xxl);
  grid-column: 1 / -1;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.empty-state {
  text-align: center;
  padding: var(--space-xxl);
  grid-column: 1 / -1;
}

.empty-state i {
  font-size: 3rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  opacity: 0.7;
}

.empty-state h3 {
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-size: 1.5rem;
}

.empty-state p {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* Rodapé Premium */
.smart-footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border);
  padding: var(--space-xxl) 0 var(--space-xl);
  position: relative;
}

.smart-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0.3;
}

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

.footer-about h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.footer-about p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.social-links {
  display: flex;
  gap: var(--space-md);
}

.social-links a {
  color: var(--text-secondary);
  font-size: 1.25rem;
  transition: var(--transition);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
}

.social-links a:hover {
  color: var(--primary);
  background: var(--primary-transparent);
  transform: translateY(-3px);
}

.footer-links h3, 
.footer-newsletter h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.footer-links ul {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--text-secondary);
  transition: var(--transition);
  text-decoration: none;
  font-size: 0.95rem;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--primary);
  transform: translateX(5px);
}

#newsletter-form {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

#newsletter-form input {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  background: rgba(1, 4, 9, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: var(--transition);
}

#newsletter-form input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--shadow-light);
}

#newsletter-form button {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0 var(--space-lg);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

#newsletter-form button:hover {
  background: var(--primary-hover);
}

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

.footer-bottom i {
  color: var(--danger);
}

/* Tema Claro */
body.light-mode {
  --bg-dark: #f6f8fa;
  --bg-darker: #ffffff;
  --bg-darkest: #e1e4e8;
  --bg-light: #ffffff;
  --text-primary: #24292e;
  --text-secondary: #586069;
  --text-tertiary: #6a737d;
  --border: #e1e4e8;
  --border-light: #d1d5da;
  --border-dark: #959da5;
  --shadow: rgba(27, 31, 35, 0.15);
  --shadow-light: rgba(3, 102, 214, 0.15);
  --primary: #0366d6;
  --primary-hover: #035fc7;
  --primary-transparent: rgba(3, 102, 214, 0.1);
  --secondary: #6f42c1;
  --secondary-hover: #5a32a3;
}

body.light-mode .particles-background {
  background: linear-gradient(135deg, #ffffff 0%, #f6f8fa 100%);
}

body.light-mode .smart-nav {
  background-color: rgba(246, 248, 250, 0.95);
}

body.light-mode .blog-post,
body.light-mode .blog-controls,
body.light-mode .modal-content {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 12px rgba(27, 31, 35, 0.1);
}

body.light-mode .search-input {
  background: white;
}

/* Responsividade Premium */
@media (max-width: 992px) {
  .gradient-text {
    font-size: 2.8rem;
  }
  
  .blog-posts {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .gradient-text {
    font-size: 2.2rem;
  }
  
  .subtitle {
    font-size: 1.1rem;
  }
  
  .blog-controls {
    flex-direction: column;
    gap: var(--space-md);
    align-items: flex-start;
  }
  
  .modal-content {
    width: 95%;
    max-height: 85vh;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .blog-posts {
    grid-template-columns: 1fr;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .cta-button {
    width: 100%;
    justify-content: center;
  }
}