/* style.css */

/** === Variables === */
:root {
  --primary: #f20df2; /* Electric Magenta */
  --secondary: #00f0ff; /* Cyan */
  --bg-dark: #1a0b2e; /* Deep Purple Void */
  --surface: #2d1b4e99;
  --neon-glow: 0 0 15px #f20df299;
  --font-display: "Space Grotesk", sans-serif;
  --liveScoreShadow: #6500e9; /* Orange */
}

/** === Resets & Global Styles === */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body,
canvas {
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  image-rendering: auto; /* Keeps the dragon sprite sharp */

  /* Disables double tap to zoom, pinch to zoom etc. on mobile */
  touch-action: none;

  /* Disables the user accidentally being able to select text when tapping */
  user-select: none;
  -webkit-user-select: none;

  /* Disables the "pull-to-refresh" on mobile chrome/safari */
  overscroll-behavior: none;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  /* Switch to dynamic view height to attempt to fix things being cut off on mobile */
  height: 100dvh;
  background-color: #2b2b2b;
  font-family: var(--font-display);
  overflow: hidden;
}

/** === Debug Layer ===  */
#debug-overlay {
  display: none;
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.8);
  color: #0f0;
  font-family: monospace;
  font-size: 10px;
  padding: 5px;
  pointer-events: none;
  z-index: 1000;
  line-height: 1.2;
  border: 1px solid #0f0;
}

/** === Game Container & Layering === */
#game-container {
  position: relative;
  height: 100dvh; /* Always fill the screen top-to-bottom */
  aspect-ratio: 9 / 16; /* Maintain that vertical phone shape */
  max-width: 100vw; /* On mobile, this will make it fill the width. On desktop, it prevents the game from becoming wider than the screen. */
  background-color: var(--bg-dark);
  border: 2px solid var(--primary);
  overflow: hidden;
  touch-action: none; /* Disables browser-level gesture handling */
  -webkit-touch-callout: none; /* Disables the long-press context menu */
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

#game {
  width: 100%;
  height: 100%;
  display: block;
  filter: contrast(1.1) brightness(1.1);

  /* Force hardware acceleration and prevent iOS flicker/stutter */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  perspective: 1000;
  -webkit-perspective: 1000;
}

/** === UI Layer === */
#ui-layer {
  position: absolute;
  inset: 0; /* Shortcut for top, left, bottom, right = 0 */
  padding: 20px;
  z-index: 11;
  pointer-events: none;
  display: none;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

#live-score {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 3rem;
  font-weight: 800;
  color: white;
  text-shadow:
    0 0 10px var(--liveScoreShadow),
    0 0 20px var(--liveScoreShadow);
  pointer-events: none;
  z-index: 10;
}

#pause-btn {
  pointer-events: auto;
  align-self: flex-start; /* Positions the button to the left */
  margin-top: auto; /* Pushes the button to the bottom of the flexbox */
  background: var(--surface);
  backdrop-filter: blur(8px);
  border: 1px solid #ffffff1a;
  color: var(--secondary);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 0 10px var(--secondary);
}

#pause-btn:hover {
  box-shadow: 0 0 15px var(--secondary);
  transform: scale(1.1);
}

/** === Menu Screen Overlay === */
#menu-screen {
  position: absolute;
  inset: 0px;
  background: rgba(13, 4, 21, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 100;
  padding: 2rem;
}

#menu-title {
  font-size: 3.5rem;
  font-weight: 800;
  /* font-style: italic; */
  text-transform: uppercase;
  text-align: center;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  transform: skewX(-10deg);
  color: white;
  text-shadow:
    0 0 10px var(--primary),
    0 0 20px var(--primary);
}

#menu-stats {
  font-size: 0.9rem;
  letter-spacing: 0.2rem;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 2.5rem;
  font-weight: 500;
}

#menu-btn {
  pointer-events: auto;
  background: var(--primary);
  color: white;
  border: none;
  padding: 1.2rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: var(--neon-glow);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

#menu-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 25px var(--primary);
}

/* This creates a shimmer type of element that starts off -100% button width from the left */
#menu-btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transform: skewX(-15deg);
  transition: 0.5s;
}

/* This moves the shimmer element over to the right side (100% button width from the left) */
#menu-btn:hover::after {
  left: 100%;
}

/** === Animations === */
@keyframes flicker {
  0%,
  18%,
  22%,
  25%,
  53%,
  57%,
  100% {
    opacity: 1;
  }
  20%,
  24%,
  55% {
    opacity: 0.8;
  }
}

#menu-title {
  animation: flicker 3s infinite;
}

@keyframes countdownPop {
  0% {
    transform: skewX(-10deg) scale(1);
    opacity: 0;
  }
  25% {
    transform: skewX(-10deg) scale(1.5);
    opacity: 1;
  }
  75% {
    transform: skewX(-10deg) scale(1.5);
    opacity: 1;
  }
  100% {
    transform: skewX(-10deg) scale(0.5);
    opacity: 0;
  }
}

.countdown-active {
  animation: countdownPop 1s ease-in-out forwards !important;
}