/* ====================================
   COMPONENTES REUTILIZABLES
   ==================================== */

/* ========== NAVBAR ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: var(--z-fixed);
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -o-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-transition: all var(--transition-base);
  -moz-transition: all var(--transition-base);
  -ms-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
  -webkit-backdrop-filter: blur(20px);
  -moz-backdrop-filter: blur(20px);
  -ms-backdrop-filter: blur(20px);
  -o-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  background-color: rgba(253, 252, 251, 0.9);
}

[data-theme="dark"] .navbar.scrolled {
  background-color: rgba(15, 15, 15, 0.9);
}

.navbar-container {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
  padding: 1.25rem var(--spacing-md);
  max-width: var(--max-width-wide);
  margin: 0 auto;
}

.navbar-logo {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--color-text-primary);
  -webkit-transition: color var(--transition-fast);
  -moz-transition: color var(--transition-fast);
  -ms-transition: color var(--transition-fast);
  -o-transition: color var(--transition-fast);
  transition: color var(--transition-fast);
}

.navbar-logo:hover {
  color: var(--color-accent-primary);
}

.navbar-menu {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  gap: var(--spacing-lg);
}

.navbar-link {
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-secondary);
  position: relative;
  -webkit-transition: color var(--transition-fast);
  -moz-transition: color var(--transition-fast);
  -ms-transition: color var(--transition-fast);
  -o-transition: color var(--transition-fast);
  transition: color var(--transition-fast);
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-primary);
  -webkit-transition: width var(--transition-base);
  -moz-transition: width var(--transition-base);
  -ms-transition: width var(--transition-base);
  -o-transition: width var(--transition-base);
  transition: width var(--transition-base);
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--color-accent-primary);
}

.navbar-link:hover::after,
.navbar-link.active::after {
  width: 100%;
}

/* Dropdown Menu */
.navbar-dropdown {
  position: relative;
}

.navbar-dropdown .navbar-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
}

.navbar-dropdown .navbar-link i {
  font-size: 0.7rem;
  -webkit-transition: -webkit-transform var(--transition-base);
  -moz-transition: -moz-transform var(--transition-base);
  -ms-transition: -ms-transform var(--transition-base);
  -o-transition: -o-transform var(--transition-base);
  transition: transform var(--transition-base);
}

.navbar-dropdown:hover .navbar-link i {
  -webkit-transform: rotate(180deg);
  -moz-transform: rotate(180deg);
  -ms-transform: rotate(180deg);
  -o-transform: rotate(180deg);
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
  padding: var(--spacing-sm) 0;
  margin-top: 0.5rem;
  opacity: 0;
  visibility: hidden;
  -webkit-transform: translateY(-10px);
  -moz-transform: translateY(-10px);
  -ms-transform: translateY(-10px);
  -o-transform: translateY(-10px);
  transform: translateY(-10px);
  -webkit-transition: all var(--transition-base);
  -moz-transition: all var(--transition-base);
  -ms-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .dropdown-menu {
  border-color: rgba(255, 255, 255, 0.08);
}

.navbar-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  -webkit-transform: translateY(0);
  -moz-transform: translateY(0);
  -ms-transform: translateY(0);
  -o-transform: translateY(0);
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.75rem 1.5rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  -webkit-transition: all var(--transition-fast);
  -moz-transition: all var(--transition-fast);
  -ms-transition: all var(--transition-fast);
  -o-transition: all var(--transition-fast);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.dropdown-item:hover {
  background-color: rgba(232, 93, 74, 0.1);
  color: var(--color-accent-primary);
  padding-left: 1.75rem;
}

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

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(232, 93, 74, 0.1) 0%, rgba(59, 122, 109, 0.1) 100%);
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  cursor: pointer;
  -webkit-transition: all var(--transition-base);
  -moz-transition: all var(--transition-base);
  -ms-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.theme-toggle:hover {
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, #FF8A7B 100%);
  color: white;
  -webkit-transform: rotate(20deg) scale(1.1);
  -moz-transform: rotate(20deg) scale(1.1);
  -ms-transform: rotate(20deg) scale(1.1);
  -o-transform: rotate(20deg) scale(1.1);
  transform: rotate(20deg) scale(1.1);
  box-shadow: 0 4px 16px rgba(232, 93, 74, 0.3);
  border-color: var(--color-accent-primary);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--color-text-primary);
  -webkit-transition: all var(--transition-base);
  -moz-transition: all var(--transition-base);
  -ms-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  -webkit-transform: rotate(45deg) translate(7px, 7px);
  -moz-transform: rotate(45deg) translate(7px, 7px);
  -ms-transform: rotate(45deg) translate(7px, 7px);
  -o-transform: rotate(45deg) translate(7px, 7px);
  transform: rotate(45deg) translate(7px, 7px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  -webkit-transform: rotate(-45deg) translate(7px, -7px);
  -moz-transform: rotate(-45deg) translate(7px, -7px);
  -ms-transform: rotate(-45deg) translate(7px, -7px);
  -o-transform: rotate(-45deg) translate(7px, -7px);
  transform: rotate(-45deg) translate(7px, -7px);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .navbar-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    background-color: var(--color-bg-secondary);
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    -webkit-overflow-scrolling: touch;
    -webkit-transform: translateX(-100%);
    -moz-transform: translateX(-100%);
    -ms-transform: translateX(-100%);
    -o-transform: translateX(-100%);
    transform: translateX(-100%);
    -webkit-transition: -webkit-transform var(--transition-base);
    -moz-transition: -moz-transform var(--transition-base);
    -ms-transition: -ms-transform var(--transition-base);
    -o-transition: -o-transform var(--transition-base);
    transition: transform var(--transition-base);
    z-index: var(--z-modal);
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }

  .navbar-menu.active {
    -webkit-transform: translateX(0);
    -moz-transform: translateX(0);
    -ms-transform: translateX(0);
    -o-transform: translateX(0);
    transform: translateX(0);
  }

  .navbar-link {
    display: block;
    text-align: center;
    width: 100%;
    padding: var(--spacing-sm) 0;
  }

  .navbar-link::after,
  .navbar-link.active::after,
  .navbar-link:hover::after {
    display: none !important;
    width: 0 !important;
  }

  /* Dropdown en móvil */
  .navbar-dropdown {
    width: 100%;
  }

  .navbar-dropdown .navbar-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    cursor: pointer;
  }

  .navbar-dropdown .navbar-link::after,
  .navbar-dropdown .navbar-link.active::after {
    display: none !important;
    width: 0 !important;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    margin-top: var(--spacing-sm);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    padding: 0;
  }

  .navbar-dropdown.active .dropdown-menu {
    max-height: 400px;
    padding: var(--spacing-sm) 0;
  }

  .dropdown-item {
    padding: 0.6rem 1.5rem;
  }
}

/* ========== FOOTER ========== */
.footer {
  background-color: var(--color-bg-tertiary);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-gray-200);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-accent-primary);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(232, 93, 74, 0.1) 0%, rgba(59, 122, 109, 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  border: 2px solid rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .social-icon {
  border-color: rgba(255, 255, 255, 0.08);
}

.social-icon:hover {
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, #FF8A7B 100%);
  color: white;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(232, 93, 74, 0.3);
  border-color: transparent;
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-200);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
}

/* ========== ARTICLE CARD ========== */
.article-card {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  -webkit-transition: all var(--transition-base);
  -moz-transition: all var(--transition-base);
  -ms-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-direction: column;
  -ms-flex-direction: column;
  flex-direction: column;
  height: 100%;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .article-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.article-card:hover {
  -webkit-transform: translateY(-12px);
  -moz-transform: translateY(-12px);
  -ms-transform: translateY(-12px);
  -o-transform: translateY(-12px);
  transform: translateY(-12px);
  box-shadow: var(--shadow-2xl);
  border-color: rgba(232, 93, 74, 0.2);
}

.article-card-image-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.article-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  -webkit-transition: -webkit-transform var(--transition-slow);
  -moz-transition: -moz-transform var(--transition-slow);
  -ms-transition: -ms-transform var(--transition-slow);
  -o-transition: -o-transform var(--transition-slow);
  transition: transform var(--transition-slow);
}

.article-card:hover .article-card-image {
  -webkit-transform: scale(1.08);
  -moz-transform: scale(1.08);
  -ms-transform: scale(1.08);
  -o-transform: scale(1.08);
  transform: scale(1.08);
}

.article-card-badge {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, #FF8A7B 100%);
  color: white;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  box-shadow: 0 4px 12px rgba(232, 93, 74, 0.3);
  -webkit-backdrop-filter: blur(8px);
  -moz-backdrop-filter: blur(8px);
  -ms-backdrop-filter: blur(8px);
  -o-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.article-card-content {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.article-card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.article-card-category {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background-color: rgba(232, 93, 74, 0.1);
  color: var(--color-accent-primary);
  transition: all var(--transition-fast);
}

.article-card:hover .article-card-category {
  background-color: var(--color-accent-primary);
  color: white;
}

.article-card-date {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.article-card-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.article-card:hover .article-card-title {
  color: var(--color-accent-primary);
}

.article-card-excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-md);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-gray-200);
}

.article-card-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.article-card-author-image {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.article-card-author-name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

.article-card-read-time {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* ========== FEATURED CARD (HERO) ========== */
.featured-card {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  height: 600px;
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all var(--transition-base);
}

.featured-card:hover {
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
  transform: translateY(-4px);
}

.featured-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xl);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.6) 50%, transparent 100%);
  color: white;
}

.featured-card-category {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, #FF8A7B 100%);
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-md);
  box-shadow: 0 4px 16px rgba(232, 93, 74, 0.4);
}

.featured-card-title {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  margin-bottom: var(--spacing-md);
  color: white;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.featured-card-excerpt {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-md);
  max-width: 700px;
  color: rgba(255, 255, 255, 0.9);
}

.featured-card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
  .featured-card {
    height: 500px;
  }

  .featured-card-title {
    font-size: var(--text-3xl);
  }

  .featured-card-excerpt {
    font-size: var(--text-base);
  }
}

/* ========== NEWSLETTER BOX ========== */
.newsletter-box {
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-secondary) 100%);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  color: white;
  text-align: center;
  box-shadow: var(--shadow-2xl);
  position: relative;
  overflow: hidden;
}

.newsletter-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  -webkit-animation: pulse 8s ease-in-out infinite;
  -moz-animation: pulse 8s ease-in-out infinite;
  -o-animation: pulse 8s ease-in-out infinite;
  animation: pulse 8s ease-in-out infinite;
}

@-webkit-keyframes pulse {
  0%, 100% { -webkit-transform: scale(1); transform: scale(1); opacity: 0.5; }
  50% { -webkit-transform: scale(1.1); transform: scale(1.1); opacity: 0.8; }
}

@-moz-keyframes pulse {
  0%, 100% { -moz-transform: scale(1); transform: scale(1); opacity: 0.5; }
  50% { -moz-transform: scale(1.1); transform: scale(1.1); opacity: 0.8; }
}

@-o-keyframes pulse {
  0%, 100% { -o-transform: scale(1); transform: scale(1); opacity: 0.5; }
  50% { -o-transform: scale(1.1); transform: scale(1.1); opacity: 0.8; }
}

@keyframes pulse {
  0%, 100% { -webkit-transform: scale(1); -moz-transform: scale(1); -ms-transform: scale(1); -o-transform: scale(1); transform: scale(1); opacity: 0.5; }
  50% { -webkit-transform: scale(1.1); -moz-transform: scale(1.1); -ms-transform: scale(1.1); -o-transform: scale(1.1); transform: scale(1.1); opacity: 0.8; }
}

.newsletter-box h3 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  margin-bottom: var(--spacing-md);
  color: white;
  position: relative;
  z-index: 1;
}

.newsletter-box p {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
  color: white;
  position: relative;
  z-index: 1;
}

.newsletter-form {
  display: flex;
  gap: var(--spacing-md);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.newsletter-input {
  -webkit-flex: 1;
  -ms-flex: 1;
  flex: 1;
  padding: 1.2rem 2rem;
  border-radius: var(--radius-full);
  border: 2px solid rgba(255, 255, 255, 0.3);
  font-size: var(--text-lg);
  background-color: rgba(255, 255, 255, 0.95);
  color: var(--color-text-primary);
  -webkit-transition: all var(--transition-base);
  -moz-transition: all var(--transition-base);
  -ms-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
  -webkit-backdrop-filter: blur(10px);
  -moz-backdrop-filter: blur(10px);
  -ms-backdrop-filter: blur(10px);
  -o-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.newsletter-input::placeholder {
  color: var(--color-text-tertiary);
}

.newsletter-input:focus {
  outline: none;
  border-color: white;
  background-color: white;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  -webkit-transform: translateY(-2px);
  -moz-transform: translateY(-2px);
  -ms-transform: translateY(-2px);
  -o-transform: translateY(-2px);
  transform: translateY(-2px);
}

.newsletter-button {
  padding: 1.2rem 2.5rem;
  border-radius: var(--radius-full);
  border: 2px solid white;
  background-color: white;
  color: var(--color-accent-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  font-size: var(--text-base);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.newsletter-button:hover {
  background-color: rgba(255, 255, 255, 0.9);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.newsletter-input.error {
  border: 2px solid #d32f2f;
  -webkit-animation: shake 0.3s ease;
  -moz-animation: shake 0.3s ease;
  -o-animation: shake 0.3s ease;
  animation: shake 0.3s ease;
}

@-webkit-keyframes shake {
  0%, 100% { -webkit-transform: translateX(0); transform: translateX(0); }
  25% { -webkit-transform: translateX(-10px); transform: translateX(-10px); }
  75% { -webkit-transform: translateX(10px); transform: translateX(10px); }
}

@-moz-keyframes shake {
  0%, 100% { -moz-transform: translateX(0); transform: translateX(0); }
  25% { -moz-transform: translateX(-10px); transform: translateX(-10px); }
  75% { -moz-transform: translateX(10px); transform: translateX(10px); }
}

@-o-keyframes shake {
  0%, 100% { -o-transform: translateX(0); transform: translateX(0); }
  25% { -o-transform: translateX(-10px); transform: translateX(-10px); }
  75% { -o-transform: translateX(10px); transform: translateX(10px); }
}

@keyframes shake {
  0%, 100% { -webkit-transform: translateX(0); -moz-transform: translateX(0); -ms-transform: translateX(0); -o-transform: translateX(0); transform: translateX(0); }
  25% { -webkit-transform: translateX(-10px); -moz-transform: translateX(-10px); -ms-transform: translateX(-10px); -o-transform: translateX(-10px); transform: translateX(-10px); }
  75% { -webkit-transform: translateX(10px); -moz-transform: translateX(10px); -ms-transform: translateX(10px); -o-transform: translateX(10px); transform: translateX(10px); }
}

@media (max-width: 640px) {
  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-button {
    width: 100%;
  }
}

/* ========== BACK TO TOP BUTTON ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--color-accent-primary);
  color: white;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -o-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-transition: all var(--transition-base);
  -moz-transition: all var(--transition-base);
  -ms-transition: all var(--transition-base);
  -o-transition: all var(--transition-base);
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-accent-secondary);
  -webkit-transform: translateY(-5px);
  -moz-transform: translateY(-5px);
  -ms-transform: translateY(-5px);
  -o-transform: translateY(-5px);
  transform: translateY(-5px);
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
  }
}

/* ========== BREADCRUMBS ========== */
.breadcrumbs {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-gray-200);
  padding: 1rem 0;
  margin-top: 70px;
  font-size: var(--text-sm);
}

.breadcrumbs .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.breadcrumb-link {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.breadcrumb-link:hover {
  color: var(--color-accent-primary);
}

.breadcrumb-separator {
  color: var(--color-gray-400);
  user-select: none;
}

.breadcrumb-current {
  color: var(--color-text-primary);
  font-weight: 600;
}

@media (max-width: 640px) {
  .breadcrumbs {
    font-size: var(--text-xs);
  }

  .breadcrumb-current {
    max-width: 150px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

/* ========== READING PROGRESS BAR ========== */
.reading-progress-bar {
  position: fixed;
  top: 70px;
  left: 0;
  width: 0;
  max-width: 100%;
  box-sizing: border-box;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary));
  z-index: var(--z-fixed);
  -webkit-transform: translateZ(0);
  -moz-transform: translateZ(0);
  -ms-transform: translateZ(0);
  -o-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-transition: width 0.1s ease-out;
  -moz-transition: width 0.1s ease-out;
  -ms-transition: width 0.1s ease-out;
  -o-transition: width 0.1s ease-out;
  transition: width 0.1s ease-out;
  box-shadow: 0 0 10px rgba(232, 93, 74, 0.5);
}

/* ========== AUTHOR CARD ========== */
.author-card {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.author-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.author-card-image {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto var(--spacing-md);
  border: 4px solid var(--color-accent-primary);
}

.author-card-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.author-card-role {
  color: var(--color-accent-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.author-card-specialty {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.author-card-bio {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-md);
}

.author-card-social {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
}

.author-social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.author-social-link:hover {
  background-color: var(--color-accent-primary);
  color: white;
  transform: scale(1.1);
}