/* base */
html, body {
  height: 100%;
  margin: 0;
  background: #1b1f23;
  color: #fff;
  font-family: "futura-pt", sans-serif;
  scroll-behavior: smooth;
}

/* make the page a vertical flex container so footer sits below */
body {
  display: flex;
  flex-direction: column;
  height: 100vh; /* full viewport */
}

/* content row: aside + main */
.content {
  display: flex;
  flex: 1;        /* take all space left by footer */
  min-height: 0;  /* CRUCIAL: allow children to shrink and allow internal scrolls */
  overflow: hidden;/* prevent body-level scrolling */
}

/* sidebar (participates in layout — NOT fixed) */
aside {
  flex: 0 0 15vw;   /* fixed width column */
  min-width: 200px; /* prevents collapse on very narrow viewports */
  box-sizing: border-box;
  padding: 1rem 1.25rem;
  padding-top: 25vh;
  text-align: right;
  z-index: 1;
}

aside ul {
    list-style: none;
}

aside li {
    margin-top: 0.5rem;
}

aside a {
    text-decoration: none;
    color: #ffffff;
    font-size: 1rem;
    font-weight: bold;
}

/* keep image responsive inside sidebar */
aside img {
  max-width: 15vw;
  height: auto;
  display: block;
  margin-left: auto;
}

/* main — THIS is the only element that scrolls */
main {
  flex: 1 1 auto;
  min-height: 0;         /* CRUCIAL for child overflow to work */
  overflow-y: auto;      /* internal scrolling only */
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  box-sizing: border-box;
  padding: 2rem;         /* content padding */
}

/* each section fills viewport height for snapping */
main section {
  height: 100vh;
  padding-top: 25vh;
  scroll-snap-align: start;
  box-sizing: border-box;
  padding-left: 3rem; /* adjust as desired */
}

/* footer remains visible at bottom (not fixed) */
footer {
  padding: 1rem 2rem;
  text-align: right;
  font-size: 0.9rem;
}

/* responsive: collapse sidebar above main on small screens */
@media (max-width: 800px) {
  aside {
    flex: 0 0 auto;
    width: 100%;
    min-width: 0;
    text-align: center;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.04);
  }

  .content {
    flex-direction: column;
  }

  main {
    padding-top: 1rem;
  }

  footer {
    text-align: center;
  }
}