/* Header Styles */
header {
  background: #fff;
  padding: 1rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-image {
  width: auto;
  object-fit: contain;
}

.logo-mobile {
  display: none;
  height: 20px;
}

.logo-desktop {
  display: block;
  height: 30px;
}

nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin-top: 0;
  margin-bottom: 0;
}

.nav-links a {
  text-decoration: none;
  color: #2c3e50;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #3b9dd4;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.sign-in {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: #2c3e50;
  font-weight: 500;
  transition: color 0.3s;
}

.sign-in:hover {
  color: #3b9dd4;
}

.notification-btn {
  position: relative;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: #2c3e50;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s;
  border-radius: 50%;
  width: 40px;
  height: 40px;
}

.notification-btn:hover {
  color: #3b9dd4;
  background: rgba(59, 157, 212, 0.1);
}

.notification-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: #ef4444;
  border-radius: 50%;
  border: 2px solid white;
}

.user-profile-wrapper {
  position: relative;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 8px;
  transition: background 0.3s;
}

.user-profile:hover {
  background: rgba(0, 0, 0, 0.05);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #e0e0e0;
}

.user-name {
  color: #2c3e50;
  font-weight: 500;
  font-size: 0.9375rem;
}

.chevron-icon {
  color: #666;
  transition: transform 0.3s;
}

.user-profile-wrapper.active .chevron-icon {
  transform: rotate(180deg);
}

.user-profile:hover .chevron-icon {
  transform: translateY(2px);
}

.user-profile-wrapper.active .user-profile:hover .chevron-icon {
  transform: rotate(180deg) translateY(2px);
}

.user-profile-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
  z-index: 1000;
  overflow: hidden;
}

.user-profile-wrapper.active .user-profile-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.profile-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  text-decoration: none;
  color: #2c3e50;
  transition: background 0.2s;
  border-bottom: 1px solid #f0f0f0;
  position: relative;
}

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

.profile-dropdown-item:hover {
  background: #f8f9fa;
}

.profile-dropdown-item-logout {
  color: #ef4444;
}

.profile-dropdown-item-logout:hover {
  background: #fee2e2;
  color: #dc2626;
}

.profile-dropdown-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

.profile-dropdown-text {
  font-weight: 500;
  font-size: 0.9375rem;
  flex: 1;
}

.profile-dropdown-badge {
  background: #ef4444;
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  min-width: 24px;
  text-align: center;
  line-height: 1.2;
}

.post-listing-wrapper {
  position: relative;
}

.post-listing-btn {
  background: #3b9dd4;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: none;
  text-decoration: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.3s, transform 0.2s;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
}

.post-listing-btn:hover {
  background: #2d8bc4;
  transform: translateY(-2px);
}

.dropdown-chevron {
  transition: transform 0.3s;
  margin-left: 0.25rem;
}

.post-listing-wrapper.active .dropdown-chevron {
  transform: rotate(180deg);
}

.post-listing-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  min-width: 300px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
  z-index: 1000;
  overflow: hidden;
}

.post-listing-wrapper.active .post-listing-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  text-decoration: none;
  color: #2c3e50;
  transition: background 0.2s;
  border-bottom: 1px solid #f0f0f0;
}

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

.dropdown-item:hover {
  background: #f8f9fa;
}

.dropdown-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.dropdown-content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.dropdown-title {
  font-weight: 600;
  font-size: 0.9375rem;
  color: #2c3e50;
  display: block;
}

.dropdown-subtitle {
  font-size: 0.8125rem;
  color: #666;
  display: block;
}

.mobile-post-icon-container {
  display: none;
  position: relative;
}

.mobile-post-btn-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: #2c3e50;
  transition: color 0.3s;
  font-family: inherit;
}

.mobile-post-btn-header:hover {
  color: #3b9dd4;
}

.icon-circle-plus {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #3b9dd4;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  flex-shrink: 0;
}

.icon-circle-plus::before {
  content: "+";
  color: white;
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1;
  position: absolute;
}

.mobile-post-text {
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

.mobile-chat-btn {
  display: none;
  position: relative;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: #2c3e50;
  transition: color 0.3s;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}

.mobile-chat-btn:hover {
  color: #3b9dd4;
  background: rgba(59, 157, 212, 0.1);
}

.mobile-chat-btn svg {
  width: 20px;
  height: 20px;
}

.mobile-chat-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: #ef4444;
  border-radius: 50%;
  border: 2px solid white;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: #2c3e50;
  transition: color 0.3s;
  font-family: inherit;
}

.mobile-menu-btn:hover {
  color: #3b9dd4;
}

.mobile-profile-icon {
  font-size: 1.5rem;
  display: block;
}

.mobile-sign-in-text {
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: white;
  z-index: 9999;
  padding: 0;
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid #e0e0e0;
  position: sticky;
  top: 0;
  background: white;
  z-index: 1;
}

.mobile-menu-content {
  padding: 1.5rem;
}

.mobile-close-btn {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: #2c3e50;
  padding: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-nav-links {
  list-style: none;
  margin-bottom: 0;
  padding: 0;
  margin-top: 0;
}

.mobile-nav-links li {
  margin-bottom: 0.5rem;
}

.mobile-nav-links a {
  text-decoration: none;
  color: #2c3e50;
  font-size: 1.1rem;
  font-weight: 500;
  display: block;
  padding: 1rem;
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
}

.mobile-nav-links a:hover {
  background: #f8f9fa;
  color: #3b9dd4;
}

.mobile-nav-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-sign-in {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #2c3e50;
  font-weight: 500;
  font-size: 1.1rem;
  padding: 1rem;
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
}

.mobile-sign-in:hover {
  background: #f8f9fa;
  color: #3b9dd4;
}

.mobile-sign-in .icon-user {
  font-size: 1.25rem;
}

.mobile-sign-in-section {
  margin-bottom: 1.5rem;
}

.mobile-user-profile {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  background: #f9fafb;
  margin-bottom: 1.5rem;
}

.mobile-user-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #e0e0e0;
}

.mobile-user-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-user-name {
  font-weight: 600;
  color: #2c3e50;
  font-size: 1rem;
}

.mobile-user-email {
  font-size: 0.875rem;
  color: #666;
}

.mobile-post-btn {
  background: #3b9dd4;
  color: white;
  padding: 1rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: background 0.2s, transform 0.2s;
}

.mobile-post-btn:hover {
  background: #2d8bc4;
  transform: translateY(-1px);
}

.mobile-post-btn-secondary {
  background: white;
  color: #3b9dd4;
  border: 2px solid #3b9dd4;
}

.mobile-post-btn-secondary:hover {
  background: #f0f7fb;
  transform: translateY(-1px);
}

.mobile-post-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.mobile-post-content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  text-align: left;
  flex: 1;
}

.mobile-post-title {
  font-weight: 600;
  font-size: 0.9375rem;
  display: block;
  line-height: 1.3;
}

.mobile-post-subtitle {
  font-size: 0.8125rem;
  opacity: 0.9;
  display: block;
  line-height: 1.3;
}

.mobile-post-listing-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.mobile-profile-menu {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
}

.mobile-profile-menu li {
  margin-bottom: 0;
}

.mobile-profile-menu-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  text-decoration: none;
  color: #2c3e50;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
  position: relative;
}

.mobile-profile-menu-item:hover {
  background: #f8f9fa;
  color: #3b9dd4;
}

.mobile-profile-menu-item-logout {
  color: #ef4444;
}

.mobile-profile-menu-item-logout:hover {
  background: #fee2e2;
  color: #dc2626;
}

.mobile-profile-menu-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

.mobile-profile-menu-text {
  flex: 1;
}

.mobile-profile-menu-badge {
  background: #ef4444;
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  min-width: 24px;
  text-align: center;
  line-height: 1.2;
}

/* Header Responsive Design */
@media (max-width: 768px) {
  header {
    padding: 1rem;
  }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .mobile-post-icon-container {
    display: flex;
    margin-right: 1rem;
  }

  .mobile-chat-btn {
    display: flex;
    margin-right: 1rem;
  }

  .mobile-menu-btn {
    display: block;
  }

  .logo-desktop {
    display: none;
  }

  .logo-mobile {
    display: block;
  }

  .user-name {
    display: none;
  }

  .user-profile {
    gap: 0.5rem;
    padding: 0.25rem;
  }

  .user-avatar {
    width: 36px;
    height: 36px;
  }

  .chevron-icon {
    display: none;
  }

  .post-listing-dropdown.mobile-dropdown-visible {
    position: fixed !important;
    top: 70px;
    right: 1rem;
    left: auto;
    min-width: 280px;
    max-width: calc(100vw - 2rem);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    z-index: 10001;
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
  }
}

@media (max-width: 480px) {
  .notification-btn {
    width: 36px;
    height: 36px;
    padding: 0.4rem;
  }

  .notification-btn svg {
    width: 18px;
    height: 18px;
  }

  .mobile-chat-btn {
    width: 36px;
    height: 36px;
    padding: 0.4rem;
  }

  .mobile-chat-btn svg {
    width: 18px;
    height: 18px;
  }

  .user-avatar {
    width: 32px;
    height: 32px;
  }
}