glam/frontend/src/App.css

/**
 * Global Application Styles
 * Heritage Custodian Ontology Visualization
 * Following Netwerk Digitaal Erfgoed (NDE) house style
 * 
 * NDE Brand Colors:
 * - Primary Blue: #0a3dfa
 * - Dark Blue: #172a59 (primary text)
 * - Orange Accent: #fa5200 (highlights)
 * - Light Gray: #f6f6f6 (backgrounds)
 * 
 * NDE Typography:
 * - Headings: Poppins (400, 500, 600)
 * - Body: Roboto (400, 500, 700)
 */

/* Import NDE fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&family=Roboto:wght@400;500;700&display=swap');

* {
  box-sizing: border-box;
}

html {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: 'Roboto', Helvetica, Arial, sans-serif; /* NDE body font */
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #f6f6f6; /* NDE light background */
  color: #172a59; /* NDE dark blue text */
}

#root {
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* NDE-style faded sunburst rays background */
#root::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/nde-icon-square.png');
  background-repeat: no-repeat;
  background-position: -20vw 30vh;
  background-size: 80vw auto;
  opacity: 0.04;
  pointer-events: none;
  z-index: 0;
}

/* Ensure all content appears above the sunburst */
#root > * {
  position: relative;
  z-index: 1;
}

code {
  font-family: 'Courier New', Courier, monospace;
  background: rgba(10, 61, 250, 0.05);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: 'Poppins', Helvetica, Arial, sans-serif; /* NDE heading font */
  color: #172a59; /* NDE dark blue */
  line-height: 1.3em;
}

h1 {
  font-size: clamp(1.5rem, 2vw + 1rem, 2.5rem);
  font-weight: 500;
}

h2 {
  font-size: clamp(1.25rem, 1.5vw + 0.75rem, 2rem);
  font-weight: 500;
}

h3 {
  font-size: clamp(1.1rem, 1vw + 0.5rem, 1.5rem);
  font-weight: 500;
}

h4 {
  font-size: clamp(1rem, 0.75vw + 0.5rem, 1.25rem);
  font-weight: 500;
}

p {
  margin: 0;
  color: #172a59;
  font-size: 1rem;
  line-height: 1.6;
}

a {
  color: #0a3dfa; /* NDE primary blue */
  text-decoration: underline;
  transition: color 0.2s ease-in-out;
}

a:hover {
  color: #172a59; /* NDE dark blue */
}

strong {
  font-weight: 500;
  color: #172a59;
}

/* NDE Button Styles */
button {
  font-family: 'Poppins', Helvetica, Arial, sans-serif;
  font-size: 0.9375rem;
  font-weight: 400;
  padding: 0.75rem 1.25rem;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

button.primary {
  background-color: #0a3dfa; /* NDE primary blue */
  color: white;
}

button.primary:hover {
  background-color: #172a59; /* NDE dark blue */
}

button.secondary {
  background-color: #f6f6f6;
  color: #172a59;
}

button.secondary:hover {
  background-color: #ebefff; /* Light blue */
}

button.accent {
  background-color: #fa5200; /* NDE orange */
  color: white;
}

button.accent:hover {
  background-color: #0a3dfa; /* NDE blue */
}

/* Scrollbar Styling (WebKit browsers) with NDE colors */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f6f6f6; /* NDE light gray */
}

::-webkit-scrollbar-thumb {
  background: rgba(10, 61, 250, 0.3); /* Semi-transparent NDE blue */
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #0a3dfa; /* NDE primary blue */
}

/* Responsive Typography */
@media (max-width: 768px) {
  body {
    font-size: 0.9375rem;
  }

  button {
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 0.875rem;
  }

  button {
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
  }
}