/* css/style.css
   SPELL RUNNER page layout (WP-G). CONTRACT 4.21 and 13.1, DESIGN 2 and 14.

   TG.Main.resize() sets the size and position of #game, #crt, #btn-duck and #btn-jump as inline
   styles (CSS px) and the class buttons-side or buttons-below on #stage. The rules below give the
   look, and a usable layout (2x, buttons in a strip below the canvas) for the moment before the
   script has run.

   INK #0f0f1b, SHADOW #2b2d42, WHITE #f8f8f8, RED #d82c2c, MAROON #6a1428, ROYAL #2f5fd0,
   DEEP_BLUE #1e2a78, GOLD #f8c020 (DESIGN 14.2). No web fonts and no images: nothing is fetched. */

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0f0f1b;
}

body {
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: none;
  overscroll-behavior: none;
}

/* The letterbox: fills the window in INK. */
#stage {
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  background: #0f0f1b;
}

/* The game canvas keeps its 384 x 216 backing store; it is shown larger, pixel by pixel. */
#game {
  position: absolute;
  display: block;
  left: calc(50% - 384px);
  top: calc(50% - 252px);
  width: 768px;
  height: 432px;
  margin: 0;
  padding: 0;
  border: 0;
  outline: none;
  background: #0f0f1b;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
}

/* CRT overlay (DESIGN 14.8, Tier 2): the lower third of every game pixel row darkened at 18%, and a
   vignette reaching 15% in the corners. No curvature and no blur. The scanline tile height is set
   by TG.Main.resize to one game pixel. */
#crt {
  position: absolute;
  display: none;
  left: calc(50% - 384px);
  top: calc(50% - 252px);
  width: 768px;
  height: 432px;
  pointer-events: none;
  background-image:
    linear-gradient(to bottom, rgba(0, 0, 0, 0) 66.6%, rgba(0, 0, 0, 0.18) 66.6%),
    radial-gradient(ellipse farthest-corner at 50% 50%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0.15) 100%);
  background-size: 100% 2px, 100% 100%;
  background-repeat: repeat, no-repeat;
}

#stage.crt-on #crt {
  display: block;
}

/* The buttons sit outside the canvas; only they take pointer events. */
#controls {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#controls button {
  position: absolute;
  box-sizing: border-box;
  width: 64px;
  height: 64px;
  margin: 0;
  padding: 0 0 4px 0;
  border: 3px solid #0f0f1b;
  border-radius: 8px;
  outline: none;
  pointer-events: auto;
  cursor: pointer;
  color: #f8f8f8;
  font: bold 13px/1 "Courier New", Courier, monospace;
  letter-spacing: 1px;
  text-align: center;
  text-shadow: 2px 2px 0 #0f0f1b;
  box-shadow: inset 0 -6px 0 rgba(0, 0, 0, 0.35), 0 0 0 2px #2b2d42;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}

#controls button:active {
  padding: 4px 0 0 0;
  box-shadow: inset 0 4px 0 rgba(0, 0, 0, 0.35), 0 0 0 2px #f8c020;
}

#controls button:focus {
  outline: none;
}

#btn-duck {
  left: calc(50% - 384px);
  top: calc(50% + 184px);
  background: #2f5fd0;
}

#btn-jump {
  left: calc(50% + 320px);
  top: calc(50% + 184px);
  background: #d82c2c;
}

/* Buttons beside the canvas: a small arrow above the word. */
.buttons-side #btn-jump::before,
.buttons-below #btn-jump::before {
  content: "\25B2";
  display: block;
  font-size: 12px;
  margin-bottom: 4px;
}

.buttons-side #btn-duck::before,
.buttons-below #btn-duck::before {
  content: "\25BC";
  display: block;
  font-size: 12px;
  margin-bottom: 4px;
}

.noscript {
  position: absolute;
  left: 0;
  right: 0;
  top: 40%;
  margin: 0;
  color: #f8f8f8;
  font: bold 16px/1.5 "Courier New", Courier, monospace;
  text-align: center;
}