/* =========================
   CSS RESET (Modern)
   ========================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
}

/* Remove default list styles */
ul, ol {
  list-style: none;
}

/* Remove default link styles */
a {
  text-decoration: none;
  color: inherit;
}

/* Images responsive by default */
img, picture, video, canvas {
  max-width: 100%;
  display: block;
}

/* =========================
   ROOT VARIABLES
   ========================= */
:root {
  --primary-color: #ffffff;
  --secondary-color: #1e293b;
  --accent-color: #f59e0b;

  --text-color: #000000;
  --bg-color: #155843;

  --font-main: system-ui, -apple-system, sans-serif;

  --max-width: 1100px;
}

/* =========================
   BASE STYLES
   ========================= */
body {
  font-family: var(--font-main);
  color: var(--text-color);
  background-color: var(--bg-color);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* =========================
   TYPOGRAPHY
   ========================= */
h1, h2, h3, h4 {
  margin-bottom: 0.5em;
  line-height: 1.2;
}

p {
  margin-bottom: 1em;
}

/* =========================
   LAYOUT
   ========================= */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  gap: 1rem;
  flex: 1; /* pushes footer down */
  justify-content: center;
  align-items: center;
  text-align: center;
  flex-direction: column;
}

.button-box {
  display: flex; 
  flex-direction: column; 
  width: 100%; 
  align-items: center; 
  justify-content: center; 
  gap: 20px
}

@media (min-width: 768px) {
  .button-box {
    flex-direction: row; /* desktop */
  }
}

/* =========================
   HEADER
   ========================= */
header {
  padding: 1rem 0;
    display: flex;
  flex-direction: column;
}

/* =========================
   NAVIGATION
   ========================= */
nav {
  display: flex;
  gap: 1rem;
}

nav a {
  color: var(--primary-color);
  font-weight: 500;
}

/* =========================
   BUTTONS
   ========================= */
.button {
  display: inline-block;
  padding: 0.6em 1.2em;
  background-color: var(--primary-color);
  color: #fff;
  border-radius: 5px;
  transition: background 0.2s ease;
}

.button:hover {
  background-color: #1d4ed8;
}

/* =========================
   FOOTER
   ========================= */
footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #e5e7eb;
  text-align: center;
  font-size: 0.9rem;
  text-align: center;
  padding: 1rem;
}