/* ========================= */
:root {
  --bg-color: #000000;
  --text-color: #ffffff;
  --accent-color: #9EFF00;

  --grey1: #1A1A18;
  --grey2: #212121;
  --grey3: #2B2B2B;

  --max-width: 600px;

  /* SINGLE SPACING SYSTEM */
  --gap: clamp(1rem, 3vw, 1rem);

  --radius: 12px;
  --font-main: Inter, sans-serif;
}

/* ========================= */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ========================= */
body {
  background: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);

  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: var(--gap);

  overflow-x: hidden;

  /* single top spacing */
  padding-top: var(--gap);
}

/* ========================= */
/* PAGE STRUCTURE */
header,
main,
footer {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* no margins — spacing handled by body gap */
header,
main {
  display: block;
}

/* ========================= */
/* HEADER */
header {
  text-align: center;
}

header img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* ========================= */
/* NAVBAR */
.nav {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;

  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;

  column-gap: var(--gap);
}

/* SIDE NAV */
.nav.side {
  display: flex;
  gap: var(--gap);
  min-width: 0;

  overflow-x: auto;
  scrollbar-width: thin;
}

.nav.side[type="left"] {
  justify-content: flex-end;
}

.nav.side[type="right"] {
  justify-content: flex-start;
}

.nav.side::-webkit-scrollbar {
  display: none;
}

/* ========================= */
/* BUTTON */
.button {
  padding: var(--gap);
  border-radius: var(--radius);

  color: var(--text-color);
  white-space: nowrap;
  text-decoration: none;
  font-weight: bold;

  display: inline-block;
  background: transparent;
  transition: background 0.2s ease;
}

.button:hover {
  background: var(--grey2);
}

/* HOME */
.button.home {
  grid-column: 2;
  justify-self: center;
}

/* ========================= */
/* CONTENT SYSTEM */
.container {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.content {
  background: var(--grey1);
  padding: var(--gap);
  border-radius: var(--radius);
}

/* ========================= */
/* MOBILE */
@media (max-width: 600px) {

  .nav {
    column-gap: calc(var(--gap) * 0.5);
  }

  .nav.side {
    gap: calc(var(--gap) * 0.5);
  }

  .button {
    padding: calc(var(--gap) * 0.6) calc(var(--gap) * 0.75);
    font-size: 0.95rem;
  }
}