*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  min-height: 100%;
  overflow: hidden;
  background: #1a1a1a;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100svh;
  min-height: 100dvh;
  padding-top: env(safe-area-inset-top, 0px);
}

#sketch-container {
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  position: relative;
  overflow: hidden;
  background: #111;
  touch-action: manipulation;
}

/* Large gradient background spanning the full grid */
#sketch-container::before {
  content: "";
  position: absolute;
  /* sized to the full grid — updated by grid.js via CSS vars */
  width: calc(100% * var(--grid-cols, 5));
  height: calc(100% * var(--grid-rows, 5));
  background:
    radial-gradient(circle 90vmin at 30% 35%, rgba(214, 125, 255, 0.9), transparent 70%),
    radial-gradient(circle 100vmin at 70% 65%, rgba(214, 125, 255, 0.9), transparent 70%),
    radial-gradient(circle 50vmin at 40% 45%, rgba(214, 125, 255, 0.9), transparent 70%),
    radial-gradient(circle 50vmin at 100% 100%, rgba(214, 125, 255, 0.9), transparent 70%),
    radial-gradient(circle 50vmin at 75% 15%, rgba(214, 125, 255, 0.9), transparent 70%),
    rgb(82, 107, 163);
  transform: translate(
    calc(-100% / var(--grid-cols, 5) * var(--grid-col, 0)),
    calc(-100% / var(--grid-rows, 5) * var(--grid-row, 0))
  );
  transition: transform 450ms ease;
  z-index: 0;
  pointer-events: none;
}

/* Blur overlay to diffuse the gradient into a soft glow */
#sketch-container::after {
  content: "";
  position: absolute;
  inset: 0;
  backdrop-filter: blur(90px);
  -webkit-backdrop-filter: blur(90px);
  z-index: 0;
  pointer-events: none;
}

#sketch-container canvas {
  display: block;
  touch-action: manipulation;
}

.sketch-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 1;
}

/* ---- Navigation Bar ---- */
#navbar {
  width: 100%;
  min-height: 80px;
  background: #222;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-top: 1px solid #444;
  user-select: none;
  padding-bottom: max(env(safe-area-inset-bottom, 0px), 6px);
}

/* ---- Title row ---- */
#nav-title {
  color: #ccc;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 0 2px;
  text-align: center;
  width: 100%;
  border-bottom: 1px solid #333;
}

/* ---- Controls row ---- */
#nav-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex: 1;
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 0 12px 4px;
}

.nav-arrows {
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-btn {
  background: none;
  border: none;
  color: #ddd;
  font-size: 1.6rem;
  padding: 8px 22px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  line-height: 1;
  touch-action: manipulation;
}

.nav-btn:hover:not(:disabled) {
  background: #333;
  color: #fff;
}

.nav-btn:disabled {
  color: #555;
  cursor: default;
}

.nav-sep {
  width: 1px;
  height: 28px;
  background: #444;
}

/* ---- Mini grid map ---- */
#mini-grid {
  display: inline-grid;
  gap: 2px;
  place-self: center;
}

.mg-cell {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: #333;
  transition: background 0.25s;
}

.mg-cell.has-screen {
  background: #666;
}

.mg-cell.current {
  background: #7af;
}

/* ---- Content panel (HTML screens) ---- */
.content-panel {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  padding: 3rem 2rem;
  color: #ddd;
  background: transparent;
}

.content-panel > * {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.content-panel h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #fff;
}

.content-panel h2 {
  font-size: 1.4rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: #eee;
}

.content-panel h3 {
  font-size: 1.1rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: #ccc;
}

.content-panel p {
  line-height: 1.7;
  margin-bottom: 1rem;
}

.content-panel a {
  color: #7af;
  text-decoration: none;
}

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

.content-panel img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 1rem 0;
  display: block;
}

.content-panel video {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 1rem 0;
  display: block;
}

.content-panel ul,
.content-panel ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.content-panel li {
  line-height: 1.7;
  margin-bottom: 0.3rem;
}

.content-panel code {
  background: #222;
  padding: 0.15em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}

.content-panel pre {
  background: #1a1a2e;
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 1rem;
}

.content-panel pre code {
  background: none;
  padding: 0;
}

/* ---- p5 slider styling (used by Pretty_curiosity) ---- */
.mySliders::-webkit-slider-runnable-track {
  background: #FFFFFF;
  height: 10px;
  border-radius: 5px;
  -webkit-appearance: none;
  cursor: pointer;
}

.mySliders::-webkit-slider-thumb {
  width: 25px;
  height: 25px;
  background: #5500cc;
  cursor: pointer;
  -webkit-appearance: none;
  margin-top: -3px;
  border-radius: 8px;
}

/* ---- Desktop navbar polish ---- */
@media (min-width: 960px) {
  #navbar {
    min-height: 104px;
  }

  #nav-title {
    font-size: 0.92rem;
    padding: 7px 0 5px;
  }

  #nav-controls {
    max-width: clamp(560px, 64vw, 980px);
    margin: 0 auto;
    gap: 22px;
    padding: 0 20px 6px;
  }

  .nav-btn {
    font-size: 2rem;
    padding: 10px 28px;
  }

  .nav-sep {
    height: 34px;
  }

  #mini-grid {
    gap: 3px;
  }

  .mg-cell {
    width: 10px;
    height: 10px;
  }
}

@media (min-width: 1440px) {
  #navbar {
    min-height: 116px;
  }

  #nav-title {
    font-size: 1rem;
    padding: 9px 0 6px;
  }

  #nav-controls {
    max-width: clamp(620px, 56vw, 1100px);
    gap: 28px;
    padding: 0 24px 8px;
  }

  .nav-btn {
    font-size: 2.25rem;
    padding: 12px 34px;
  }

  .nav-sep {
    height: 38px;
  }

  #mini-grid {
    gap: 4px;
  }

  .mg-cell {
    width: 12px;
    height: 12px;
  }
}