* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

body {
  background-color: #121318;
  background-image: radial-gradient(#202534 1px, transparent 1px);
  background-size: 20px 20px;
  font-family: 'Press Start 2P', monospace, sans-serif;
  color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow: hidden;
}

#game-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 10px;
  max-width: 100vw;
}

/* Screen Bezel - matching the Threads video frame */
#screen-bezel {
  display: flex;
  flex-direction: row;
  background: #0d121d;
  border: 3px solid #3c4966;
  border-radius: 12px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.7), inset 0 2px 6px rgba(255, 255, 255, 0.1);
  overflow: hidden;
  position: relative;
}

/* Left vertical sidebar matching the "Introduction" vertical text */
#stage-sidebar {
  background: #171d2b;
  border-right: 2px solid #2d384e;
  width: 32px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

#stage-label {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-size: 11px;
  color: #6da278;
  letter-spacing: 2px;
  font-weight: bold;
  text-shadow: 0 1px 2px #000000;
  white-space: nowrap;
}

#canvas-wrapper {
  position: relative;
  width: 640px;
  height: 360px;
  background: #000;
  display: flex;
  justify-content: center;
  align-items: center;
}

@media (min-width: 1024px) {
  #canvas-wrapper {
    width: 800px;
    height: 450px;
  }
}

@media (max-width: 720px) {
  #canvas-wrapper {
    width: 90vw;
    height: calc(90vw * 9 / 16);
  }
  #stage-sidebar {
    width: 24px;
  }
  #stage-label {
    font-size: 8px;
  }
}

#gameCanvas {
  width: 100%;
  height: 100%;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-crisp-edges;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  display: block;
}

/* Subtle CRT scanline overlay */
#crt-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
  background-size: 100% 3px, 6px 100%;
  opacity: 0.7;
  transition: opacity 0.2s;
}

#crt-overlay.disabled {
  opacity: 0;
}

/* Modal overlay */
.overlay-modal {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 12, 18, 0.92);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 50;
  backdrop-filter: blur(2px);
}

.modal-content {
  text-align: center;
  max-width: 90%;
  background: #1e2638;
  border: 3px solid #5a709c;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.8);
}

.pixel-title {
  font-size: 20px;
  color: #ffca3a;
  text-shadow: 2px 2px #d00000, 4px 4px #000;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.subtitle {
  font-size: 10px;
  color: #8ac926;
  margin-bottom: 20px;
}

.instructions {
  font-size: 9px;
  line-height: 1.8;
  color: #e0e6ed;
  margin-bottom: 24px;
  text-align: left;
  background: #111624;
  padding: 12px;
  border-radius: 4px;
  border-left: 4px solid #1982c4;
}

.instructions strong {
  color: #ffca3a;
}

.retro-btn {
  background: #e63946;
  color: #ffffff;
  font-family: 'Press Start 2P', monospace;
  font-size: 11px;
  padding: 12px 20px;
  border: 2px solid #ffffff;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 0 4px #9b2226;
  transition: all 0.1s;
}

.retro-btn:hover {
  background: #ff4d5a;
  transform: translateY(-2px);
  box-shadow: 0 6px #9b2226;
}

.retro-btn:active {
  transform: translateY(2px);
  box-shadow: 0 2px #9b2226;
}

/* Touch controls */
#touch-controls {
  position: absolute;
  bottom: 8px;
  left: 8px;
  right: 8px;
  display: none;
  justify-content: space-between;
  align-items: flex-end;
  pointer-events: none;
  z-index: 20;
}

#touch-controls.active {
  display: flex;
}

#dpad {
  display: grid;
  grid-template-columns: repeat(3, 42px);
  grid-template-rows: repeat(3, 42px);
  pointer-events: auto;
}

.dpad-btn {
  background: rgba(30, 40, 60, 0.75);
  border: 2px solid #7d93be;
  color: #fff;
  font-size: 14px;
  border-radius: 6px;
  touch-action: manipulation;
}

.dpad-btn:active {
  background: #ffca3a;
  color: #000;
}

.dpad-btn.up { grid-column: 2; grid-row: 1; }
.dpad-btn.left { grid-column: 1; grid-row: 2; }
.dpad-btn.center { grid-column: 2; grid-row: 2; background: rgba(20, 25, 40, 0.6); border: none; }
.dpad-btn.right { grid-column: 3; grid-row: 2; }
.dpad-btn.down { grid-column: 2; grid-row: 3; }

#action-buttons {
  display: flex;
  gap: 12px;
  pointer-events: auto;
}

.act-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(230, 57, 70, 0.85);
  border: 2px solid #fff;
  color: #fff;
  font-family: 'Press Start 2P', monospace;
  font-size: 9px;
  box-shadow: 0 4px #781d22;
  touch-action: manipulation;
}

.act-btn.btn-b {
  background: rgba(42, 157, 143, 0.85);
  box-shadow: 0 4px #1b665c;
}

.act-btn:active {
  transform: translateY(3px);
  box-shadow: 0 1px #000;
}

/* Bottom Controls Bar */
#controls-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.control-item {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.retro-icon-btn {
  background: #222938;
  border: 1px solid #485773;
  color: #c0cbdb;
  font-family: 'Press Start 2P', monospace;
  font-size: 8px;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.retro-icon-btn:hover {
  background: #333d52;
  color: #ffffff;
  border-color: #ffca3a;
}

.repo-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  text-decoration: none;
}

.info-text {
  font-size: 8px;
  color: #7b88a1;
  text-align: center;
}