body {
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
    color: white;

    background-image: url("images/gif_sapce.webp");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%; /*ensures body fills the screen*/
    overflow-x: hidden; /*prevent sideways scroll if something is wide*/
}

img {
    display: block;
    margin: 0 auto;
    max-width: 90%; /*shrink on small screens*/
    width: 300px; /*desktop cap size */
    height: auto; /*keep aspect ratio*/
    margin-bottom: 20px;
    border-radius: 10px;
}

p {
    max-width: 600px; /*max width for the text block*/
    width: 90%; /*allow it to shrink on phones*/
    margin: 0 auto;
    font-weight: bold;
    line-height: 1.6;

    /*fix text from not being readable due to background image*/
    background-color: rgba(0,0,0,0.6); /*semi-transparent black*/
    padding: 10px;
    border-radius: 5px;
}

h1 {
    margin: 16px 0;
}

/*this is a media query that applied if the screen/window is below a certain width*/
@media (max-width: 600px) {
  h1 { font-size: 24px; }
  p  { font-size: 16px; }
}

/*===========================================*/
/*LAYOUT SYSTEM FOR SIDEBARS + CENTER CONTENT*/
/*===========================================*/

/* ===============================
   LAYOUT SYSTEM FOR SIDEBARS + CENTER CONTENT
   =============================== */

/* Base: Mobile-first (stacked layout) */
.layout {
  display: grid;
  grid-template-columns: 1fr;   /* Phones: one column stacked */
  gap: 20px;
  padding: 16px;
}

/* Side panel styling */
.panel ul { 
  list-style: none;       /* remove bullets */
  margin: 0; 
  padding-left: 0; 
}

.panel li { 
  margin: 6px 0; 
}

.panel a { 
  color: #00e5ff;         /* link color */
  text-decoration: none; 
}

.panel a:hover { 
  text-decoration: underline; 
}

/* Tablet & larger screens: switch to 3-column layout */
@media (min-width: 768px) {
  .layout {
    /* left | center | right */
    grid-template-columns: minmax(180px, 1fr) minmax(0, 720px) minmax(180px, 1fr);

    /* constrain width & center the grid */
    max-width: 1200px;
    margin: 0 auto;

    align-items: start;   /* align columns to top */
    gap: 24px;
  }

  /* optional: keep side panels visible while scrolling */
  .side { 
    position: sticky; 
    top: 16px; 
    height: fit-content; 
  }
}

/* Desktop widescreens: give center more room */
@media (min-width: 1024px) {
  .layout {
    grid-template-columns: minmax(200px, 1fr) minmax(0, 800px) minmax(200px, 1fr);
    max-width: 1300px;
  }
}