/* Design tokens, reset, typography and shared components */

:root {
  --color-primary: #1769FF;
  --color-slate-dark: #1F3050;
  --color-charcoal: #293E5E;
  --color-bg-main: #142236;
  --color-blue-light: #3B82F6;
  --color-text-light: #FFFFFF;
  --color-text-muted: #94A3B8;
  --color-border: rgba(255, 255, 255, 0.08);
  --font-stack: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1200px;
  --gutter: 24px;
  --radius-card: 12px;
  --radius-media: 16px;
  --radius-pill: 9999px;
  --section-space: 96px;
}

/* Fluid section spacing and gutters (shared by every page) */
@media (max-width: 1024px) { :root { --section-space: 80px; } }
@media (max-width: 640px) { :root { --section-space: 64px; --gutter: 20px; } }

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul[class], ol[class] { list-style: none; padding: 0; }
img, svg { display: block; }
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
address { font-style: normal; }

html { scroll-behavior: smooth; scroll-padding-top: 104px; }

body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-light);
  background-color: var(--color-bg-main);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: 4px; }

/* Typography */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.25rem, 1.4rem + 3.6vw, 3.5rem); line-height: 1.1; }
h2 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.5rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }
h4 { font-size: 1rem; letter-spacing: 0.02em; }
p { color: var(--color-text-muted); }

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-blue-light);
  margin-bottom: 14px;
}

.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head h2 { margin-bottom: 12px; }

/* Layout helpers */
.container { width: 100%; max-width: var(--container-width); margin-inline: auto; padding-inline: var(--gutter); }

/* Buttons and links */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background-color: var(--color-primary); color: var(--color-text-light); }
.btn--primary:hover { background-color: var(--color-blue-light); }
.btn--ghost { padding-inline: 8px; color: var(--color-text-light); }
.btn--ghost:hover { color: var(--color-blue-light); }
.btn--ghost .icon { transition: transform 0.2s ease; }
.btn--ghost:hover .icon { transform: translateX(4px); }
.btn--outline { border-color: rgba(23, 105, 255, 0.5); color: var(--color-text-light); }
.btn--outline:hover { border-color: var(--color-primary); background-color: rgba(23, 105, 255, 0.12); }

.text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; font-weight: 600; color: var(--color-blue-light); }
.text-link .icon { transition: transform 0.2s ease; }
.text-link:hover { color: var(--color-text-light); }
.text-link:hover .icon { transform: translateX(4px); }
.inline-link { color: var(--color-blue-light); text-decoration: underline; text-underline-offset: 3px; }
.inline-link:hover { color: var(--color-text-light); }

/* Shared icon defaults: stroke style, scaled to text */
.icon { width: 1.25em; height: 1.25em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.icon--solid { fill: currentColor; stroke: none; }

/* Accessibility helpers */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 200;
  padding: 12px 20px;
  background-color: var(--color-primary);
  color: var(--color-text-light);
  border-radius: 0 0 8px 8px;
  font-weight: 600;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

/* Scroll reveal (JS enhances, content stays visible without JS) */
.js .reveal { opacity: 0; transform: translateY(26px); }
.js .reveal.is-visible { opacity: 1; transform: none; transition: opacity 0.6s ease, transform 0.6s ease; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}