/* Reset & base */
* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  background-color: #fff;
  color: #222;
}

/* Layout shells */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
}

/* Basic nav layout only (no colors here) */
header { padding: 1rem 2rem; }
nav { margin-top: 0.5rem; display: flex; flex-wrap: wrap; gap: 1rem; }
nav a { text-decoration: none; font-weight: bold; }

/* Hero shell */
.hero {
  height: 300px;
  display: flex; align-items: center; justify-content: center;
  text-align: center; color: #fff; position: relative;
  background: #000 center/cover no-repeat;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.4);
}
.hero .hero-content { position: relative; z-index: 1; padding: 0 1rem; max-width: 800px; }

/* Footer shell */
footer { text-align: center; padding: 1rem; margin-top: 2rem; }

/* Utilities */
h1, h2, h3 { line-height: 1.3; }
p { margin: 1rem 0; }
ul { padding-left: 1.2rem; }
li { margin-bottom: 0.5rem; }

/* Buttons */
.btn { display: inline-block; padding: 0.6rem 1rem; border-radius: 4px; border: 0; cursor: pointer; font-weight: bold; }