/* ===========================
   CSS Custom Properties
   =========================== */
:root {
  /* Luna Blue chrome tokens */
  --xp-titlebar-dark:   #0A246A;
  --xp-titlebar-mid:    #245EDC;
  --xp-titlebar-light:  #3D95FF;
  --xp-titlebar-pale:   #A6CAF0;
  --xp-taskbar-dark:    #1941A5;
  --xp-taskbar-light:   #2873E0;
  --xp-start-dark:      #2E8A2E;
  --xp-start-light:     #6FD66F;
  --xp-face:            #FFFFFF;
  --xp-face-alt:        #FFFFFF;
  --xp-bevel-light:     #FFFFFF;
  --xp-bevel-shadow:    #ACA899;
  --xp-bevel-dark:      #716F64;
  --xp-desktop:         #3A6EA5;

  --bg: #FFFFFF;
  --bg-elevated: #FFFFFF;
  --dark-accent: #0A246A;
  --medium-accent: #716F64;
  --primary-accent: #245EDC;
  --text: #000000;
  --text-muted: #44464B;
  --border: #ACA899;

  --font-heading: Tahoma, 'Segoe UI', Verdana, Geneva, sans-serif;
  --font-hand: Tahoma, 'Segoe UI', Verdana, Geneva, sans-serif;
  --font-body: Tahoma, 'Segoe UI', Verdana, Geneva, sans-serif;

  --max-width: 1100px;
  --nav-height: 40px;
  --icon-bar-height: 0px;
}

/* ===========================
   Icon (mask-image base)
   =========================== */
.icon {
  display: inline-block;
  width: 1.05rem;
  height: 1.05rem;
  background-color: currentColor;
  -webkit-mask: var(--icon-url) no-repeat center / contain;
  mask: var(--icon-url) no-repeat center / contain;
}

.icon--social {
  width: 20px;
  height: 20px;
}

/* ===========================
   Reset & Base
   =========================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  position: relative;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--xp-desktop);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-accent);
}

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

/* ===========================
   Utility: Fade-in Animation
   =========================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}