/* ============================================
   CSS VARIABLES & RESET
   ============================================ */
:root {
  /* Badge colours (from AI Awareness 2026 badges) */
  --badge-safe: #93c5fd;
  --badge-smart: #fdba74;
  --badge-creative: #c4b5fd;
  --badge-responsible: #86efac;
  --badge-future: #f9a8d4;
  --badge-black: #000000;

  /* Brand palette: --green-* are monochrome (black/gray) for UI, not literal green. Kept for backward compatibility. */
  --green-50: #fafafa;
  --green-100: #f0f0f0;
  --green-200: #e5e5e5;
  --green-300: #d4d4d4;
  --green-400: #737373;
  --green-500: #525252;
  --green-600: #171717;
  --green-700: #0a0a0a;
  --green-800: #0a0a0a;
  --green-900: #000000;

  /* Accent colours (actual green, purple, blue, amber for highlights and single-resource) */
  --accent-green: #22c55e;
  --accent-green-light: #dcfce7;
  --accent-green-dark: #15803d;
  --accent-purple: #7c3aed;
  --accent-purple-mid: #6b21a8;
  --accent-purple-dark: #5b1b8a;
  --accent-purple-light: #f3e8ff;
  --accent-blue: #2563eb;
  --accent-blue-light: #dbeafe;
  --accent-blue-dark: #1e40af;
  --accent-amber-light: #fef9c3;
  --accent-amber: #a16207;

  --white: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;

  --font-display: 'Intel Clear', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --section-padding: clamp(1.5rem, 3vw, 2.5rem) 0;
  --container-width: min(1200px, 90vw);
  --border-radius: 0;

  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  color: var(--gray-800);
  background: var(--white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Broken image fallback: hide broken img, show placeholder icon */
img.is-broken {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.broken-image-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  min-height: 48px;
  background: var(--gray-100);
  color: var(--gray-400);
  border-radius: 0;
}

.broken-image-icon svg {
  width: 32px;
  height: 32px;
}

/* Keep parent layout when image is broken (e.g. partner logo, badge) */
.site-logo,
.hero-logo,
.partner-logo,
.principle-card .principle-badge,
.theme-link,
.display-board-real,
.display-board-examples__item {
  position: relative;
}

.partner-logo .broken-image-icon,
.principle-card .principle-badge .broken-image-icon {
  width: 100%;
  aspect-ratio: 1;
}

.theme-link .broken-image-icon {
  width: 100%;
  height: 100%;
  min-height: 60px;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.container {
  width: var(--container-width);
  margin: 0 auto;
}