@import url("https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap");

:root {
  --black: #222222;
  --white: #f8f8f8;
  --blue: #0074d9;
  --red: #dc143c;
  --font-pixel: "Press Start 2P", monospace;
}

body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: var(--white);
  font-family: var(--font-pixel);
  max-width: 1440px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
}

/* ---------------- Base Styles ---------------- */

h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style-type: none;
}

a {
  cursor: pointer;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  font-family: var(--font-pixel);
}

/* ---------------- Navigation Bar ---------------- */

header {
  box-sizing: border-box;
  width: 100%;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header h1 {
  color: var(--black);
  font-size: 2rem;
  line-height: 2rem;
}

@media (max-width: 768px) {
  header h1 {
    font-size: 1.5rem;
    line-height: 1.5rem;
  }
}

nav {
  padding: 4px;
  border-radius: 4px;
  border: 2px outset var(--black);
}

nav ul {
  display: flex;
  gap: 16px;
  align-items: center;
}

nav .icon {
  width: 24px;
  object-fit: contain;
}

/* ---------------- Main Content ---------------- */
main {
  padding-inline: 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
}

@media (max-width: 768px) {
  main {
    grid-template-columns: 100%;
    grid-template-rows: 1fr auto;
  }
}

/* ---------------- Panel Controls ---------------- */

.panel {
  display: grid;
  column-gap: 8px;
  grid-template-columns: repeat(2, 50px);
  grid-template-rows: repeat(3, 50px);
  gap: 8px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .panel {
    grid-template-columns: repeat(6, 40px);
    order: 1;
  }
}

.panel li {
  box-sizing: border-box;
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: var(--white); /* Default */
  border: 2px solid #ddd;
  cursor: pointer;
  transition: transform 0.2s ease-in-out;
}

.panel li:active {
  transform: scale(0.9); /* Click effect */
}

.panel .black {
  background-color: var(--black);
}
.panel .white {
  background-color: var(--white);
}
.panel .blue {
  background-color: var(--blue);
}
.panel .red {
  background-color: var(--red);
}

.panel .icon {
  background-color: var(--white);
  display: grid;
  place-items: center;
}

.panel .icon img {
  width: 24px;
  object-fit: contain;
}

/* ---------------- Pixel Grid ---------------- */

section {
  display: grid;
  place-items: center;
}

#grid {
  width: 55%;
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  grid-template-rows: repeat(16, 1fr);
  aspect-ratio: 1 / 1;
  border: 1px solid #ddd;
}

@media (max-width: 768px) {
  #grid {
    width: 100%;
  }
}

.pixel {
  background-color: var(--white); /* Default background */
  border: 1px solid #ddd;
  cursor: pointer;
}

.pixel.black {
  background-color: var(--black);
}
.pixel.white {
  background-color: var(--white);
}
.pixel.blue {
  background-color: var(--blue);
}
.pixel.red {
  background-color: var(--red);
}