* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* NAVBAR */
header {
width: 100%;  
display: flex;
align-items: center;
padding: 16px 16px;
gap: 16px; /* controls space between logo and Projects */
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: black;
  font-weight: bold;
  font-size: 1.2rem;
}

.logo img {
  height: 100px;
  margin-right: 8px;
}

nav a {
  text-decoration: none;
  color: black;
  font-size: 1rem;
}

nav a:hover {
  text-decoration: underline;
}

/* MAIN CONTENT */
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* .image-container {
  border: 4px solid black;
  padding: 4px;
}

.image-container img {
  max-width: 80vw;
  max-height: 70vh;
  display: flex-start;
} */


.image-container {
  position: relative;
  display: inline-block;
  padding: 10px; /* space for borders */
}

/* image */
.image-container img {
  max-width: 80vw;
  max-height: 70vh;
  display: block;
  position: relative;
  z-index: 2;
}

/* first (inner) animated border */
.image-container::before,
.image-container::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 6px;
  padding: 4px;
  background: linear-gradient(
    90deg,
    red,
    /* yellow, */
    lime,
    /* cyan, */
    /* blue,
    magenta, */
    red
  );
  background-size: 300% 300%;
  animation: borderFlow 6s linear infinite;
  pointer-events: none;
}

/* inner border */
.image-container::before {
  z-index: 1;
}

/* outer border */
.image-container::after {
  inset: -6px;                /* pushes it outward */
  animation-duration: 10s;    /* different speed */
  opacity: 0.9;
}

/* creates hollow center so border shows */
.image-container::before,
.image-container::after {
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
}

/* animation */
@keyframes borderFlow {
  0%   { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}