/* Terragraph Branding Styles */

/* Theme adaptation variables */
:root {
  --theme-filter: none;
}

[data-theme="dark"] {
  --theme-filter: brightness(1.2) contrast(0.9);
}

/* Topbar Brand */
.topbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.topbar-logo {
  width: var(--logo-size-base);
  height: var(--logo-size-base);
  opacity: var(--brand-logo-opacity);
  filter: var(--brand-logo-filter);
  transition: var(--transition-professional);
  margin-right: var(--logo-margin-base);
}

.topbar-logo:hover {
  opacity: var(--brand-logo-opacity);
  filter: var(--brand-logo-filter-hover);
  transform: var(--hover-elevation);
}

.topbar-logo:active {
  filter: var(--brand-logo-filter-active);
  transform: var(--active-scale);
}

/* Map Brand Watermark */
.map-brand {
  position: absolute;
  bottom: 24px;
  left: 10px;
  display: flex;
  align-items: center;
  transition: all var(--duration-normal) var(--ease-out);
  z-index: var(--z-controls);
  cursor: pointer;
}

.map-brand:hover {
  transform: translateY(-1px);
}

.map-brand-icon {
  width: var(--logo-size-hero);
  height: var(--logo-size-hero);
  filter: var(--brand-logo-filter);
  opacity: var(--brand-logo-opacity-secondary);
  flex-shrink: 0;
  transition: var(--transition-professional);
}

.map-brand:hover .map-brand-icon {
  filter: var(--brand-logo-filter-hover);
  opacity: var(--brand-logo-opacity);
}

.map-brand-text {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  margin-left: var(--spacing-xs);
  opacity: 0;
  width: 0;
  white-space: nowrap;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.map-brand:hover .map-brand-text {
  opacity: 1;
  width: auto;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-max);
  opacity: 1;
  transition: opacity var(--duration-slow) var(--ease-out);
}

.loading-screen.fade-out {
  opacity: 0;
  pointer-events: none;
}

.loading-mascot {
  width: var(--logo-size-executive);
  height: auto;
  margin-bottom: var(--logo-margin-executive);
  animation: bob 2s ease-in-out infinite;
  filter: var(--brand-logo-filter);
  opacity: var(--brand-logo-opacity);
}

.loading-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-executive);
  color: var(--brand-neutral);
  margin-bottom: var(--spacing-sm);
  text-align: center;
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-professional);
}

.loading-subtitle {
  font-size: var(--text-base);
  color: var(--brand-secondary);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  font-weight: var(--font-weight-professional);
  line-height: var(--line-height-professional);
}

.loading-progress {
  width: 200px;
  height: 4px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.loading-progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 40%;
  background: var(--gradient-brand-primary);
  border-radius: var(--radius-full);
  animation: loading-slide 1.5s ease-in-out infinite;
  box-shadow: 0 2px 8px var(--brand-primary-medium);
}

@keyframes bob {
  0%, 100% { 
    transform: translateY(0); 
  }
  50% { 
    transform: translateY(-10px); 
  }
}

@keyframes loading-slide {
  0% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(250%);
  }
  100% {
    transform: translateX(-100%);
  }
}

/* Empty States */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--text-muted);
  min-height: 200px;
}

.empty-state-mascot {
  width: var(--logo-size-hero);
  height: auto;
  opacity: var(--brand-logo-opacity-disabled);
  margin-bottom: var(--logo-margin-base);
  filter: var(--brand-logo-filter);
  transition: var(--transition-professional);
}

.empty-state-title {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.empty-state-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  max-width: 300px;
  line-height: 1.5;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.modal-content {
  background: var(--bg-surface);
  border-radius: var(--modal-radius);
  box-shadow: var(--modal-shadow);
  width: 90%;
  max-height: 80vh;
  position: relative;
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: transparent;
  border: none;
  font-size: var(--text-2xl);
  color: var(--text-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.modal-close:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* About Modal */
.about-modal {
  max-width: 480px;
  padding: var(--spacing-xl);
}

.about-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.about-mascot {
  width: var(--logo-size-hero);
  height: auto;
  flex-shrink: 0;
  filter: var(--brand-logo-filter);
  opacity: var(--brand-logo-opacity);
  transition: var(--transition-professional);
}

.about-brand {
  flex: 1;
}

.about-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-executive);
  color: var(--brand-neutral);
  margin-bottom: var(--spacing-xs);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-professional);
}

.about-subtitle {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-professional);
  color: var(--brand-secondary);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  line-height: var(--line-height-compact);
}

.about-version {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
}

.about-description {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

.about-links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.about-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--duration-fast) var(--ease-out);
}

.about-link:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .loading-mascot {
    width: 100px;
  }
  
  .loading-title {
    font-size: var(--text-xl);
  }
  
  .loading-progress {
    width: 150px;
  }
  
  .about-header {
    flex-direction: column;
    text-align: center;
  }
  
  .about-mascot {
    width: 60px;
  }
  
  .map-brand {
    bottom: var(--spacing-md);
    right: var(--spacing-sm);
  }
}