/* ==========================================================================
   Eulerian Bots — Robotic Arm 3D Lab Stylesheet
   Theme: High-tech industrial dark theater, glassmorphism, ember accents
   ========================================================================== */

:root {
  --lab-bg: #050506;
  --panel-bg: rgba(12, 10, 8, 0.72);
  --panel-border: rgba(232, 80, 10, 0.18);
  --panel-border-glow: rgba(232, 80, 10, 0.4);
  --glow-color: rgba(232, 80, 10, 0.25);
  --text-dim: #9b9487;
  --green-glow: #10b981;
  --green-glow-bg: rgba(16, 185, 129, 0.15);
}

body.lab-page {
  background-color: var(--lab-bg);
  color: var(--bone);
  font-family: var(--font);
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  color-scheme: dark;
}

/* Film grain effect sync */
body.lab-page::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===== Fullscreen Loader ===== */
.loader-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background-color: #030304;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s var(--ease), visibility 0.8s;
}

.loader-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  width: 90%;
  max-width: 450px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.loader-logo {
  width: 60px;
  height: 60px;
  margin-bottom: 2rem;
  animation: pulse-glow 2s infinite ease-in-out;
}

.loader-title {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--bone);
  margin-bottom: 1.5rem;
}

.loader-bar-container {
  width: 100%;
  height: 2px;
  background: rgba(244, 241, 234, 0.1);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 1rem;
  position: relative;
}

.loader-bar {
  width: 0%;
  height: 100%;
  background: var(--ember);
  box-shadow: 0 0 10px var(--ember-bright);
  transition: width 0.3s ease;
}

.loader-text {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  text-transform: uppercase;
}

@keyframes pulse-glow {
  0%, 100% {
    transform: scale(1);
    filter: drop-shadow(0 0 5px rgba(232, 80, 10, 0));
  }
  50% {
    transform: scale(1.05);
    filter: drop-shadow(0 0 15px var(--ember));
  }
}

/* ===== Main Canvas ===== */
#canvas-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

#canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

/* ===== HUD & Overlay Panels ===== */
.hud-layer {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none; /* Let clicks pass through to Three.js controls */
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Re-enable pointer events for interactive panels */
.hud-panel {
  pointer-events: auto;
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 1.25rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.03);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.hud-panel:hover {
  border-color: var(--panel-border-glow);
  box-shadow: 0 8px 32px rgba(232, 80, 10, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* UI Structure */
.hud-top-left {
  position: absolute;
  top: 1.5rem;
  left: 6.5rem; /* Offsets from the back button */
  max-width: 320px;
}

.hud-left-panel {
  position: absolute;
  top: 8rem;
  left: 1.5rem;
  width: 340px;
  bottom: 5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hud-right-panel {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 380px;
  bottom: 5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hud-bottom-bar {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  height: 2.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  background: rgba(10, 8, 7, 0.85);
}

/* ===== Scrollbar styling for panels ===== */
.scrollable {
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(232, 80, 10, 0.3) rgba(0, 0, 0, 0.2);
}

.scrollable::-webkit-scrollbar {
  width: 4px;
}

.scrollable::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
}

.scrollable::-webkit-scrollbar-thumb {
  background-color: rgba(232, 80, 10, 0.3);
  border-radius: 99px;
}

/* ===== Headings & Typography ===== */
.hud-title-box {
  background: none;
  border: none;
  box-shadow: none;
  padding: 0;
}

.hud-title-box h1 {
  font-size: 1.15rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--bone);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hud-title-box h1::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--ember);
  box-shadow: 0 0 8px var(--ember-bright);
}

.hud-title-box .hud-subtitle {
  font-size: 0.68rem;
  font-family: var(--mono);
  color: var(--text-dim);
  margin-top: 0.2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.panel-section-title {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--bone);
  border-bottom: 1px solid rgba(244, 241, 234, 0.08);
  padding-bottom: 0.4rem;
  margin-bottom: 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-section-title span.tag {
  font-family: var(--mono);
  font-size: 0.58rem;
  background: rgba(232, 80, 10, 0.1);
  color: var(--ember-bright);
  padding: 0.1rem 0.4rem;
  border-radius: 2px;
}

/* ===== Diagnostics Console ===== */
.console-container {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  min-height: 0; /* Important for flex child scrolling */
}

.console-log {
  flex-grow: 1;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(244, 241, 234, 0.04);
  border-radius: 4px;
  padding: 0.75rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.5;
  color: #a7f3d0; /* terminal green tint */
}

.console-line {
  margin-bottom: 0.4rem;
  word-break: break-all;
}

.console-line .timestamp {
  color: var(--text-dim);
  margin-right: 0.4rem;
}

.console-line .status-tag {
  color: var(--ember);
  margin-right: 0.4rem;
  font-weight: bold;
}

/* ===== Interactive Material Controls ===== */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.btn-preset {
  background: rgba(244, 241, 234, 0.04);
  border: 1px solid rgba(244, 241, 234, 0.12);
  color: var(--bone);
  padding: 0.6rem 0.5rem;
  font-family: var(--font);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.btn-preset svg {
  width: 16px;
  height: 16px;
  opacity: 0.6;
  stroke: var(--bone);
  transition: stroke 0.2s, opacity 0.2s;
}

.btn-preset:hover {
  background: rgba(232, 80, 10, 0.08);
  border-color: rgba(232, 80, 10, 0.4);
}

.btn-preset.active {
  background: rgba(232, 80, 10, 0.15);
  border-color: var(--ember);
  color: var(--ember-bright);
  box-shadow: 0 0 12px rgba(232, 80, 10, 0.15);
}

.btn-preset.active svg {
  opacity: 1;
  stroke: var(--ember-bright);
}

/* ===== Interactive Telemetry Sliders ===== */
.telemetry-sliders {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-dim);
}

.slider-header span.val {
  color: var(--bone);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.slider-row input[type="range"] {
  flex-grow: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: rgba(244, 241, 234, 0.08);
  border-radius: 2px;
  outline: none;
}

.slider-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ember);
  cursor: pointer;
  box-shadow: 0 0 8px var(--ember-bright);
  transition: transform 0.1s;
}

.slider-row input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

.slider-row .btn-mini {
  background: rgba(244, 241, 234, 0.05);
  border: 1px solid rgba(244, 241, 234, 0.1);
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.6rem;
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  cursor: pointer;
}

.slider-row .btn-mini:hover {
  color: var(--bone);
  border-color: rgba(244, 241, 234, 0.2);
}

/* ===== Analytics / Live Metrics ===== */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
}

.metric-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(244, 241, 234, 0.04);
  border-radius: 4px;
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
}

.metric-card .label {
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.metric-card .val {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bone);
  margin-top: 0.15rem;
}

.metric-card.alert .val {
  color: var(--ember-bright);
  animation: text-pulse 1.5s infinite;
}

@keyframes text-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ===== Hotspot / Inspect Panel ===== */
.inspect-info {
  font-size: 0.72rem;
  line-height: 1.5;
}

.inspect-header {
  font-weight: 800;
  text-transform: uppercase;
  color: var(--ember-bright);
  font-size: 0.78rem;
  margin-bottom: 0.3rem;
}

.inspect-desc {
  color: var(--text-dim);
}

.inspect-specs {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.inspect-spec-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.62rem;
  border-bottom: 1px dashed rgba(244, 241, 234, 0.05);
  padding-bottom: 0.15rem;
}

.inspect-spec-row span.label {
  color: var(--text-dim);
}

.inspect-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.7rem;
}

.inspect-placeholder svg {
  width: 24px;
  height: 24px;
  stroke: var(--text-dim);
  margin-bottom: 0.5rem;
  opacity: 0.5;
}

/* ===== Bottom Bar Readouts ===== */
.hud-coords {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
}

.hud-coords span {
  color: var(--ember-bright);
  margin-right: 0.6rem;
}

.hud-status-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  background: var(--green-glow-bg);
  color: var(--green-glow);
  padding: 0.25rem 0.6rem;
  border-radius: 99px;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.hud-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green-glow);
  box-shadow: 0 0 6px var(--green-glow);
  animation: blink 1.5s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ===== Hover instruction widget ===== */
.hud-instruction {
  position: absolute;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  background: rgba(0, 0, 0, 0.65);
  border: 1px solid rgba(244, 241, 234, 0.1);
  padding: 0.45rem 1rem;
  border-radius: 99px;
  color: var(--bone);
  text-transform: uppercase;
  z-index: 100;
  pointer-events: none;
  animation: hover-drift 3s infinite ease-in-out;
}

@keyframes hover-drift {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, -4px); }
}

/* ===== Responsive adjustments ===== */
@media (max-width: 1024px) {
  body.lab-page {
    overflow-y: auto;
  }
  .hud-layer {
    position: relative;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    padding: 1rem;
    height: auto;
    min-height: 100vh;
    gap: 1.5rem;
    overflow-y: auto;
    background: rgba(5, 5, 6, 0.7);
  }
  #canvas-container {
    position: fixed;
    z-index: 0;
  }
  .hud-top-left {
    position: relative;
    top: 0;
    left: 0;
    max-width: 100%;
  }
  .hud-left-panel, .hud-right-panel {
    position: relative;
    width: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }
  .hud-bottom-bar {
    position: relative;
    width: 100%;
    left: 0;
    right: 0;
    bottom: 0;
  }
}