:root {
  --z0-red: #A32020;
  --z1-orange: #C74514;
  --z2-yellow: #B8860B;
  --z3-sulfur: #9E9E2C;
  --z4-iron:   #61727A;
  --z5-zinc:   #8696A6;
  --z6-gold:   #FFDF00;
  
  --void-black: #050505;
  --clinical-white: #e9e9e9;
  --blank-page-min: 0.6922;
  
  --font-serif: 'Playfair Display', serif;
  --font-ui: 'Inter', sans-serif;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--void-black);
  color: var(--clinical-white);
  font-family: var(--font-ui);
  overflow-x: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

#void-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--void-black);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s cubic-bezier(0.4, 0.0, 0.2, 1);
  pointer-events: none;
}

#sigil {
  font-family: var(--font-serif);
  font-size: 8rem;
  letter-spacing: -0.05em;
  opacity: 1;
  transition: opacity 1.5s ease-out;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-family: var(--font-ui);
  background: linear-gradient(to bottom, rgba(5,5,5,0.9), transparent);
  position: fixed;
  top: 0;
  width: calc(100% - 4rem);
  z-index: 100;
}

.header-left h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  font-weight: 400;
}

.subtitle {
  font-size: 0.75rem;
  color: #888;
  letter-spacing: 0.1em;
}

.header-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--z6-gold);
}

.t-phase {
  font-size: 0.7rem;
  color: #666;
}

.header-right .status {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.pulse {
  animation: breathe 5.236s ease-in-out infinite;
}

@keyframes breathe {
  0% { opacity: var(--blank-page-min); }
  50% { opacity: 1; text-shadow: 0 0 10px rgba(255,255,255,0.4); }
  100% { opacity: var(--blank-page-min); }
}

.env-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(400px, 45vh);
  gap: 1.5rem;
  padding: 6rem 2rem 2rem 2rem;
  box-sizing: border-box;
  flex: 1;
  overflow-y: auto;
}

.panel {
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(10, 10, 12, 0.4);
  backdrop-filter: blur(10px);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  padding: 1rem;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(5,5,5,0.8), transparent);
}

.panel-header h2 {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: #fff;
}

.panel-header .annotation {
  margin: 0.25rem 0 0 0;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: #999;
  line-height: 1.3;
}

.canvas-wrapper {
  flex: 1;
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

/* Specific Panel Controls */
.interactive-layer {
  position: absolute;
  bottom: 1rem;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  z-index: 20;
}

button {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--clinical-white);
  padding: 0.4rem 0.8rem;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.2s;
}

button:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--z6-gold);
}

#drop-iron { border-bottom: 2px solid var(--z4-iron); }
#drop-gold { border-bottom: 2px solid var(--z6-gold); }
#release-helium { border-bottom: 2px solid #5a9bd4; }

.slider-layer {
  position: absolute;
  bottom: 1rem;
  width: 80%;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.slider-label {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
  font-family: var(--font-ui);
  color: #aaa;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  background: transparent;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 12px;
  width: 3px;
  background: var(--z6-gold);
  cursor: ew-resize;
  margin-top: -5px;
}
input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 2px;
  cursor: pointer;
  background: rgba(255,255,255,0.2);
}

.closure-panel {
  grid-column: span 3;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: transparent;
  border: none;
  padding: 4rem;
}

.closure-content h2 {
  font-family: var(--font-ui);
  letter-spacing: 0.2em;
  margin: 0;
}

.closure-content h3 {
  font-family: var(--font-serif);
  color: var(--z6-gold);
  letter-spacing: 0.05em;
  font-weight: 400;
  margin-top: 0.5rem;
}

.doctrine {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.6;
  max-width: 600px;
  margin: 2rem auto;
  color: #ccc;
}

.seal {
  font-family: var(--font-serif);
  font-size: 2rem;
  letter-spacing: 0.1em;
  margin-top: 2rem;
  opacity: 0.5;
}

/* Extraneous Scrollbar styling for that clinical feel */
::-webkit-scrollbar {
  width: 4px;
}
::-webkit-scrollbar-track {
  background: var(--void-black);
}
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--z6-gold);
}