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

:root {
  --bg-color: #ffffff;
  --text-color: #000000;
  --border-color: #000000;
  --font-main: 'Inconsolata', monospace, -apple-system, BlinkMacSystemFont, sans-serif;
  --shadow-canvas: 0 16px 48px rgba(0, 0, 0, 0.18);
}

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);
  line-height: 1.5;
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* =========================================
   Main Centered Playground Container
   ========================================= */
.playground-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 16px 20px;
  width: 100%;
  margin: 0 auto;
}

/* =========================================
   Large Centered Canvas
   ========================================= */
.canvas-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 24px;
  width: 100%;
}

#glitchCanvas {
  display: block;
  width: 96vw;
  max-width: 1500px;
  height: 82vh;
  max-height: 920px;
  object-fit: cover;
  border-radius: 0;
  box-shadow: none;
  background-color: #0e0e0e;
  cursor: pointer;
  user-select: none;
}

/* =========================================
   Centered Pure ASCII Sliders
   ========================================= */
.controls-panel {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px 32px;
  width: 100%;
}

.ascii-slider {
  font-family: 'Inconsolata', monospace;
  font-size: 1.05rem;
  font-weight: 700;
  color: #000000;
  cursor: ew-resize;
  user-select: none;
  -webkit-user-select: none;
  padding: 4px 6px;
  letter-spacing: 1px;
  line-height: 1;
  outline: none;
  transition: opacity 0.15s ease, transform 0.1s ease;
}

.ascii-slider:hover {
  opacity: 0.7;
}

.ascii-slider:active {
  transform: scale(0.98);
}

/* =========================================
   Floating Controls (Audio Mute)
   ========================================= */
.floating-controls {
  position: fixed;
  bottom: 20px;
  right: 24px;
  display: flex;
  align-items: center;
  z-index: 1000;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: #000000;
  cursor: pointer;
  padding: 6px;
  opacity: 0.8;
  transition: opacity 0.15s ease, transform 0.1s ease;
  user-select: none;
  outline: none;
}

.icon-btn svg {
  display: block;
  stroke: currentColor;
}

.icon-btn:hover {
  opacity: 1;
  transform: scale(1.08);
}

.icon-btn:active {
  transform: scale(0.95);
}

/* =========================================
   Responsive Design
   ========================================= */
@media (max-width: 768px) {
  #glitchCanvas {
    width: 94vw;
    height: 62vh;
  }

  .controls-panel {
    gap: 16px;
  }

  .floating-controls {
    bottom: 16px;
    right: 16px;
  }
}