.app-header {
  text-align: center;
  color: white;
  padding: 40px 20px;
  animation: fadeInDown 0.6s ease;
}

.app-header h1 a {
  position: relative;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.app-header h1 a .nav-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: contain;
  vertical-align: middle;
  margin-right: 12px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.app-header h1 a .text {
  color: #ffd700;
}

.app-header h1 a .text.shimmer {
  background: linear-gradient(90deg, #fff, #ffd700, #fff, #ffd700);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}

.app-header.shimmer-header h1 a::after {
  background: linear-gradient(90deg, #ffd700, #fff, #ffd700);
}

.nav-title a .text.shimmer {
  background: linear-gradient(90deg, #667eea, #ffd700, #667eea, #ffd700);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
  color: transparent;
}

.nav-title a::after {
  background: linear-gradient(90deg, #667eea, #ffd700, #667eea) !important;
}

.app-header h1 a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: #ffd700;
  transition: width 0.4s ease;
}

.app-header h1 a:hover::after {
  width: 100%;
}

.app-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
  margin-top: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 768px) {
  .app-title {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .app-title {
    font-size: 1.8rem;
  }

  .app-header {
    padding: 30px 15px;
  }
}

.app-header.light-bg {
  color: #2c3e50;
}

.app-header.light-bg .app-title {
  text-shadow: none;
}

.app-header.light-bg h1 a .text {
  color: #667eea;
}

.app-header.light-bg h1 a .text.shimmer {
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea, #764ba2);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.app-header.light-bg.shimmer-header h1 a::after {
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
}

.app-header.light-bg .app-subtitle {
  color: #5a6c7d;
}

.nav-title.light-bg a .text {
  color: #667eea;
}

.nav-title.light-bg a .text.shimmer {
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea, #764ba2);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-title.light-bg a::after {
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea) !important;
}

.login-header.light-bg h1 a .text {
  color: #667eea;
}

.login-header.light-bg h1 a .text.shimmer {
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea, #764ba2);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-header.light-bg h1 a {
  position: relative;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.login-header.light-bg.shimmer-header h1 a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  transition: width 0.4s ease;
}

.login-header.light-bg.shimmer-header h1 a:hover::after {
  width: 100%;
}

.login-header.light-bg .app-subtitle {
  color: #5a6c7d;
}

.content-header.light-bg h1 {
  color: #667eea;
}

.content-header.light-bg h1::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  transition: width 0.4s ease;
}

.content-header.light-bg h1:hover::after {
  width: 100%;
}

.sidebar-header.light-bg h2 a {
  color: inherit;
  text-decoration: none;
  position: relative;
  display: inline-flex;
  align-items: center;
}

.sidebar-header.light-bg h2 a .text {
  color: #667eea;
}

.sidebar-header.light-bg h2 a .text.shimmer {
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea, #764ba2);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
  color: transparent;
}

.sidebar-header.light-bg h2 a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #667eea, #764ba2, #667eea);
  transition: width 0.4s ease;
}

.sidebar-header.light-bg h2 a:hover::after {
  width: 100%;
}