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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0a0a0a;
  font-family: 'Press Start 2P', monospace;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: unset;
  text-rendering: optimizeSpeed;
  color: #c8c8c8;
}

#scene {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

#crt-effects {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  pointer-events: none;
}

#scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 20;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
}

#vignette {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 21;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    transparent 40%,
    rgba(0, 0, 0, 0.3) 70%,
    rgba(0, 0, 0, 0.7) 100%
  );
}

/* --- Boot screen --- */
#boot-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 40px;
  background: transparent;
  transition: opacity 1s ease;
}

#boot-screen.fade-out {
  opacity: 0;
  pointer-events: none;
}

#boot-screen.hidden {
  display: none;
}

#boot-inner {
  text-align: center;
}

#boot-text {
  font-size: 10px;
  line-height: 2.2;
  color: #4dc9f6;
  white-space: pre-line;
  text-shadow: 0 0 8px rgba(77, 201, 246, 0.6);
}

#boot-cursor {
  color: #4dc9f6;
  animation: blink 0.6s step-end infinite;
  text-shadow: 0 0 8px rgba(77, 201, 246, 0.6);
  font-size: 10px;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* --- Bottom UI --- */
#bottom-ui {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transition: opacity 1.5s ease;
}

#bottom-ui.hidden {
  opacity: 0;
  pointer-events: none;
}

#bottom-ui.visible {
  opacity: 1;
  pointer-events: auto;
}

#prompt-text {
  font-size: 10px;
  color: #4dc9f6;
  letter-spacing: 2px;
  text-shadow: 0 0 8px rgba(77, 201, 246, 0.6);
  animation: textPulse 4s ease-in-out infinite;
}

@keyframes textPulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

#audio-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  background: none;
  border: none;
}

#play-btn,
#read-btn {
  background: none;
  border: none;
  color: rgba(77, 201, 246, 0.4);
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.3s;
  padding: 0;
}

#play-btn {
  width: 28px;
  font-size: 11px;
}

#read-btn {
  width: 28px;
  padding: 0;
}

#play-btn:hover,
#read-btn:hover {
  color: #4dc9f6;
}

#play-icon {
  font-family: sans-serif;
  font-size: 14px;
  margin-left: 1px;
}

#progress-container {
  width: 100px;
  height: 2px;
  background: rgba(77, 201, 246, 0.08);
  cursor: pointer;
  position: relative;
}

#progress-bar {
  height: 100%;
  width: 0%;
  background: rgba(77, 201, 246, 0.35);
  transition: width 0.1s linear;
}

#time-display {
  font-size: 6px;
  color: rgba(77, 201, 246, 0.25);
  min-width: 30px;
  text-align: right;
}

/* --- Info button --- */
#info-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 100;
  background: none;
  border: none;
  color: rgba(77, 201, 246, 0.4);
  cursor: pointer;
  transition: color 0.2s, opacity 1.5s ease;
  padding: 4px;
  font-size: 18px;
}

#info-btn.hidden {
  opacity: 0;
  pointer-events: none;
}

#info-btn.visible {
  opacity: 1;
  pointer-events: auto;
}

#info-btn:hover {
  color: #4dc9f6;
}

/* --- About panel --- */
#about-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 360px;
  max-width: 85vw;
  height: 100%;
  z-index: 200;
  background: rgba(5, 5, 8, 0.92);
  border-left: 1px solid rgba(77, 201, 246, 0.15);
  backdrop-filter: blur(8px);
  transform: translateX(100%);
  transition: transform 0.4s ease;
  overflow-y: auto;
}

#about-panel.open {
  transform: translateX(0);
}

#about-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: rgba(77, 201, 246, 0.5);
  font-size: 20px;
  cursor: pointer;
  transition: color 0.2s;
  font-family: sans-serif;
}

#about-close:hover {
  color: #4dc9f6;
}

#about-content {
  padding: 48px 28px 28px;
}

#about-content h2 {
  font-size: 12px;
  color: #4dc9f6;
  text-shadow: 0 0 8px rgba(77, 201, 246, 0.4);
  margin-bottom: 24px;
  letter-spacing: 2px;
}

#about-content p {
  font-size: 8px;
  line-height: 2;
  color: rgba(200, 200, 200, 0.8);
  margin-bottom: 16px;
}

#about-content .credit {
  font-size: 7px;
  color: rgba(200, 200, 200, 0.4);
  margin-bottom: 8px;
}

#about-content a {
  color: #4dc9f6;
  text-decoration: none;
  text-shadow: 0 0 6px rgba(77, 201, 246, 0.3);
}

#about-content a:hover {
  color: #fff;
}

/* --- Read overlay --- */
#read-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 150;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(5, 5, 8, 0.75);
  backdrop-filter: blur(2px);
  transition: opacity 0.6s ease;
  padding: 40px;
}

#read-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

#read-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

#read-text {
  max-width: 600px;
  font-size: 9px;
  line-height: 2.4;
  color: #4dc9f6;
  text-align: center;
  text-shadow: 0 0 8px rgba(77, 201, 246, 0.5);
  min-height: 60px;
}

#read-prompt {
  margin-top: 24px;
  font-size: 7px;
  color: rgba(77, 201, 246, 0.4);
  animation: blink 1.2s step-end infinite;
}

#read-close {
  position: fixed;
  top: 20px;
  right: 20px;
  background: none;
  border: 1px solid rgba(77, 201, 246, 0.3);
  color: rgba(77, 201, 246, 0.5);
  font-family: 'Press Start 2P', monospace;
  font-size: 7px;
  padding: 6px 12px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

#read-close:hover {
  color: #4dc9f6;
  border-color: #4dc9f6;
}

/* --- End screen --- */
#end-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  pointer-events: none;
}

#end-screen.hidden {
  display: none;
}

#end-text {
  font-size: 10px;
  color: #4dc9f6;
  text-shadow: 0 0 8px rgba(77, 201, 246, 0.6);
  letter-spacing: 2px;
  opacity: 0;
  transition: opacity 2s ease;
}

#end-screen.visible #end-text {
  opacity: 1;
}

/* --- Responsive --- */
@media (max-width: 767px) {
  #scanlines {
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 3px,
      rgba(0, 0, 0, 0.06) 3px,
      rgba(0, 0, 0, 0.06) 6px
    );
  }

  #boot-text { font-size: 8px; }
  #bottom-ui { bottom: 16px; }
  #prompt-text { font-size: 8px; letter-spacing: 1px; }
  #play-btn { width: 36px; height: 36px; }
  #read-btn { height: 36px; font-size: 8px; }
  #progress-container { width: 80px; }
  #about-panel { width: 100%; max-width: 100%; }
  #read-text { font-size: 8px; line-height: 2.2; padding: 0 16px; }
  #read-overlay { padding: 24px; }
}