/* Logo Placeholder and Asset Fix Styles */

/* Generic Logo Placeholder */
.logo-placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  font-weight: bold;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.logo-placeholder:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* Header Logo Specific */
.header-logo.logo-placeholder {
  width: 32px;
  height: 32px;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* Footer Logo Specific */
.footer-logo.logo-placeholder {
  width: 35px;
  height: 35px;
  font-size: 16px;
  margin-right: 10px;
}

/* Large Logo for Landing Page */
.hero-logo.logo-placeholder {
  width: 60px;
  height: 60px;
  font-size: 24px;
  margin-bottom: 20px;
}

/* Responsive Logo Adjustments */
@media (max-width: 768px) {
  .header-logo.logo-placeholder {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
  
  .hero-logo.logo-placeholder {
    width: 50px;
    height: 50px;
    font-size: 20px;
  }
}

/* Logo Loading State */
.logo-loading {
  background: linear-gradient(45deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: logo-shimmer 1.5s infinite;
  color: transparent;
}

@keyframes logo-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Error State for Missing Images */
.img-error {
  display: none;
}

.img-error + .logo-placeholder {
  display: inline-flex;
}

/* When image loads successfully, hide placeholder */
img:not(.img-error) + .logo-placeholder {
  display: none;
}

/* Grammar Guru Brand Colors */
.gg-brand {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gg-brand-alt {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.gg-brand-success {
  background: linear-gradient(135deg, #56ab2f 0%, #a8e6cf 100%);
}

/* Fallback Font Icons */
.logo-icon::before {
  content: "GG";
  font-family: 'Arial', sans-serif;
  font-weight: 900;
  letter-spacing: -1px;
}

/* Enhanced Logo with Icon */
.logo-with-text {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
}

.logo-with-text .logo-placeholder {
  margin: 0;
}

.logo-with-text .logo-text {
  font-weight: 700;
  font-size: 20px;
  color: #333;
  transition: color 0.3s ease;
}

.logo-with-text:hover .logo-text {
  color: #667eea;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .logo-with-text .logo-text {
    color: #fff;
  }
  
  .logo-with-text:hover .logo-text {
    color: #8b9df9;
  }
}

/* Print Styles */
@media print {
  .logo-placeholder {
    background: #000 !important;
    color: #fff !important;
    border: 2px solid #000;
  }
}