body {
  /* Theme Variables */
  --panel-opacity: 0.08;
  --border-color: #61cf5a;
  --border-color-alpha: rgba(97, 207, 90, 0.4);
  --glow-color: rgba(97, 207, 90, 0.08);
  --primary-color: #61cf5a;
  --highlight-color: #ff1493;
  --swap-color: #00ffff;
  --sorted-color: #50864c;
  --accent-color: #61cf5a;
  --button-color: #63ad58;
  --code-highlight-bg: #50864c;
  --backdrop-blur: 5px;

  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: transparent;
  color: #eee;
  overflow-x: hidden;
}

#tsparticles {
  position: fixed;
  width: 100vw;
  height: 100vh;
  z-index: -1;
}

.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

header h1 {
  text-align: center;
  color: var(--accent-color);
  margin: 0 0 1.5rem 0;
  font-size: 2.5em;
  text-shadow: 0 0 10px var(--accent-color), 0 0 20px rgba(97, 207, 90, 0.5);
  letter-spacing: 2px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  margin: 1rem 0;
}

.input-group select,
.input-group input,
#codeToggle {
  padding: 8px;
  font-size: 1rem;
  border-radius: 4px;
  border: none;
  margin-right: 0.5rem;
  background-color: var(--button-color);
  color: #fff;
  box-shadow: 0 0 8px var(--glow-color);
}

.input-group button,
.control-buttons button {
  padding: 8px 12px;
  font-size: 1rem;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  background-color: var(--button-color);
  color: #fff;
}

.control-buttons {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#speedRange {
  vertical-align: middle;
}

#speedLabel {
  font-size: 0.9rem;
  width: 30px;
  display: inline-block;
  text-align: center;
}

/* Themed range slider to match buttons */
#speedRange {
  -webkit-appearance: none;
  appearance: none;
  width: 140px;
  height: 8px;
  background: rgba(255,255,255,0.12);
  border-radius: 6px;
  outline: none;
  margin-left: 6px;
  border: 1px solid rgba(97,207,90,0.3);
}

#speedRange::-webkit-slider-runnable-track {
  height: 8px;
  background: rgba(255,255,255,0.12);
  border-radius: 6px;
  border: 1px solid rgba(97,207,90,0.3);
}

#speedRange::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  margin-top: -4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--button-color);
  box-shadow: 0 0 10px var(--glow-color);
  border: 1px solid var(--border-color-alpha);
  cursor: pointer;
}

#speedRange::-moz-range-track {
  height: 8px;
  background: rgba(255,255,255,0.12);
  border-radius: 6px;
  border: 1px solid rgba(97,207,90,0.3);
}

#speedRange::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--button-color);
  box-shadow: 0 0 10px var(--glow-color);
  border: 1px solid var(--border-color-alpha);
  cursor: pointer;
}

.runtime-summary {
  display: flex;
  justify-content: space-evenly;
  background-color: rgba(30, 30, 30, var(--panel-opacity));
  backdrop-filter: blur(var(--backdrop-blur));
  padding: 0.5rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  border: 1px solid var(--border-color-alpha);
  box-shadow: 0 0 10px var(--glow-color);
}

.main-panel {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
}

.visual-area {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  height: 300px;
  background-color: rgba(34, 34, 34, var(--panel-opacity));
  backdrop-filter: blur(var(--backdrop-blur));
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  padding: 1rem;
  flex-grow: 1;
  min-width: 500px;
  border: 1px solid var(--border-color-alpha);
  box-shadow: 0 0 10px var(--glow-color);
}

.bar {
  margin: 0px 3px;
  width: 60px;
  padding-bottom: 3px;
  background-color: var(--primary-color);
  transition: height 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.2s ease, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  color: white;
  font-size: 0.9rem;
  position: relative;
}

.bar.highlight {
  background-color: var(--highlight-color) !important;
}

.bar.swap {
  background-color: var(--swap-color) !important;
}

.bar.sorted {
  background-color: var(--sorted-color) !important;
}

.code-panel {
  background-color: rgba(30, 30, 30, var(--panel-opacity));
  backdrop-filter: blur(var(--backdrop-blur));
  padding: 1rem;
  border-radius: 6px;
  font-family: monospace;
  font-size: 0.9rem;
  white-space: pre-wrap;
  overflow-x: auto;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color-alpha);
  box-shadow: 0 0 10px var(--glow-color);
}

.code-panel > div:first-child {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.code-panel label {
  margin: 0;
  white-space: nowrap;
}

.code-panel #codeToggle {
  margin: 0;
}

#pseudocode .highlight {
  background-color: var(--code-highlight-bg);
  color: white;
}

#pseudocode .highlight.compare {
  background-color: var(--highlight-color);
  color: white;
}

#pseudocode .highlight.swap {
  background-color: var(--swap-color);
  color: #000;
}

.language-code .highlight {
  background-color: var(--code-highlight-bg);
  color: white;
}

.language-code {
  margin-top: 0;
  color: #eee;
  flex-grow: 1;
  overflow-y: auto;
}

.input-group select:focus,
.input-group input:focus,
#codeToggle:focus,
.input-group button:focus,
.control-buttons button:focus {
  outline: 2px solid rgba(97,207,90,0.12);
}