/* ==========================================================================
   UAVs Meet Embodied Intelligence - Main Global Stylesheet
   Academic, Clean, Aerospace & Embodied Intelligence Design System
   ========================================================================== */

:root {
  --color-bg: #f4f1e8;
  --color-surface: #ffffff;
  --color-navy: #102639;
  --color-navy-soft: #1b354b;
  --color-muted: #586976;
  --color-light-muted: #8899a6;
  --color-orange: #df6f3f;
  --color-orange-hover: #ed875d;
  --color-orange-ink: #8f3e21;
  --color-blue: #356c9a;
  --color-border: rgba(16, 38, 57, 0.12);
  --color-border-strong: rgba(16, 38, 57, 0.22);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--color-bg);
  color: var(--color-navy);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-navy);
  line-height: 1.5;
  overflow-x: clip;
  position: relative;
}

/* Accessibility Focus States */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 3px;
}

/* Selection Highlight */
::selection {
  background: var(--color-orange);
  color: #ffffff;
}