/* ============================================
   LCARS CORE — Star Trek TNG Computer Interface
   GEP Interactive Simulation Suite
   Gary W. Floyd — Lumiea Systems
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Antonio:wght@400;500;700&display=swap');

:root {
  /* LCARS Canonical Colors */
  --lcars-orange: #FF9900;
  --lcars-peach: #FF9966;
  --lcars-cream: #FFCC99;
  --lcars-gold: #CC9933;
  --lcars-mauve: #CC99CC;
  --lcars-lavender: #9999CC;
  --lcars-periwinkle: #9999FF;
  --lcars-blue: #6688CC;
  --lcars-rose: #CC6699;
  --lcars-plum: #664466;
  --lcars-red: #CC4444;
  --lcars-teal: #008888;
  --lcars-sky: #5588AA;
  --lcars-ice: #88CCFF;
  --lcars-bg: #000000;
  --lcars-text: #FF9966;
  --lcars-text-bright: #FFCC99;

  /* Layout */
  --sidebar-width: 180px;
  --topbar-height: 60px;
  --corner-radius: 40px;
  --bar-gap: 4px;
  --pill-radius: 16px;
}

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

html, body {
  background: var(--lcars-bg);
  color: var(--lcars-text);
  font-family: 'Antonio', sans-serif;
  height: 100%;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---- LCARS Frame Structure ---- */
.lcars-frame {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: var(--topbar-height) 1fr 32px;
  height: 100vh;
  gap: var(--bar-gap);
  padding: var(--bar-gap);
}

/* ---- Left Sidebar (Vertical Bars) ---- */
.lcars-sidebar {
  grid-row: 1 / 4;
  display: flex;
  flex-direction: column;
  gap: var(--bar-gap);
}

.lcars-sidebar-top {
  background: var(--lcars-mauve);
  border-radius: var(--corner-radius) 0 0 0;
  height: var(--topbar-height);
  display: flex;
  align-items: flex-end;
  padding: 0 14px 6px;
}

.lcars-sidebar-top span {
  color: var(--lcars-bg);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.lcars-sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--bar-gap);
  overflow-y: auto;
  scrollbar-width: none;
}

.lcars-sidebar-nav::-webkit-scrollbar { display: none; }

.lcars-nav-btn {
  display: block;
  width: 100%;
  border: none;
  background: var(--lcars-lavender);
  color: var(--lcars-bg);
  font-family: 'Antonio', sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: right;
  padding: 6px 14px;
  cursor: pointer;
  border-radius: 0 var(--pill-radius) var(--pill-radius) 0;
  transition: background 0.15s, transform 0.1s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 32px;
}

.lcars-nav-btn:hover {
  background: var(--lcars-orange);
  transform: scaleX(1.03);
  transform-origin: left;
}

.lcars-nav-btn.active {
  background: var(--lcars-orange);
  color: var(--lcars-bg);
  font-weight: 700;
}

.lcars-nav-btn[data-cat="foundation"] { background: var(--lcars-periwinkle); }
.lcars-nav-btn[data-cat="forces"] { background: var(--lcars-lavender); }
.lcars-nav-btn[data-cat="cosmo"] { background: var(--lcars-mauve); }
.lcars-nav-btn[data-cat="astro"] { background: var(--lcars-rose); }
.lcars-nav-btn[data-cat="applied"] { background: var(--lcars-sky); }
.lcars-nav-btn[data-cat="meta"] { background: var(--lcars-gold); }

.lcars-sidebar-bottom {
  background: var(--lcars-mauve);
  border-radius: 0 0 0 var(--corner-radius);
  height: 32px;
}

/* ---- Top Bar ---- */
.lcars-topbar {
  display: flex;
  gap: var(--bar-gap);
  align-items: stretch;
}

.lcars-topbar-title {
  flex: 1;
  background: var(--lcars-orange);
  border-radius: 0 0 var(--corner-radius) 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 0 24px;
}

.lcars-topbar-title h1 {
  color: var(--lcars-bg);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.lcars-topbar-title .subtitle {
  color: var(--lcars-bg);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  opacity: 0.7;
}

.lcars-topbar-pills {
  display: flex;
  gap: var(--bar-gap);
  align-items: stretch;
}

.lcars-pill {
  width: 50px;
  border-radius: 0 0 var(--pill-radius) var(--pill-radius);
}

.lcars-pill:nth-child(1) { background: var(--lcars-peach); }
.lcars-pill:nth-child(2) { background: var(--lcars-cream); width: 30px; }
.lcars-pill:nth-child(3) { background: var(--lcars-lavender); width: 40px; }
.lcars-pill:nth-child(4) { background: var(--lcars-periwinkle); border-radius: 0 0 var(--corner-radius) var(--pill-radius); width: 60px; }

/* ---- Main Content ---- */
.lcars-main {
  background: rgba(20, 15, 10, 0.4);
  border: 2px solid #221800;
  overflow-y: auto;
  padding: 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--lcars-orange) #111;
  position: relative;
}

.lcars-main::-webkit-scrollbar { width: 6px; }
.lcars-main::-webkit-scrollbar-track { background: #111; }
.lcars-main::-webkit-scrollbar-thumb { background: var(--lcars-orange); border-radius: 3px; }

/* ---- Bottom Bar ---- */
.lcars-bottombar {
  display: flex;
  gap: var(--bar-gap);
  align-items: stretch;
}

.lcars-bottombar-main {
  flex: 1;
  background: var(--lcars-gold);
  border-radius: 0 var(--corner-radius) 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.lcars-bottombar-main span {
  color: var(--lcars-bg);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lcars-bottom-pills {
  display: flex;
  gap: var(--bar-gap);
}

.lcars-bottom-pill {
  height: 100%;
  border-radius: var(--pill-radius) var(--pill-radius) 0 0;
}

.lcars-bottom-pill:nth-child(1) { background: var(--lcars-lavender); width: 40px; }
.lcars-bottom-pill:nth-child(2) { background: var(--lcars-peach); width: 30px; }
.lcars-bottom-pill:nth-child(3) { background: var(--lcars-periwinkle); width: 50px; border-radius: var(--pill-radius) var(--corner-radius) 0 0; }

/* ---- Simulation Page Layout ---- */
.sim-layout {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.sim-canvas-area {
  flex: 1;
  min-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sim-canvas-area canvas {
  border: 1px solid #332200;
  border-radius: 4px;
  display: block;
  width: 100%;
  image-rendering: pixelated;
}

.sim-controls {
  width: 250px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---- LCARS Panels ---- */
.lcars-panel {
  background: rgba(0,0,0,0.5);
  border: 1px solid #332200;
  border-radius: 8px 8px 8px 20px;
  padding: 10px 14px;
  position: relative;
}

.lcars-panel::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--lcars-orange);
  border-radius: 8px 0 0 20px;
}

.lcars-panel[data-accent="mauve"]::before { background: var(--lcars-mauve); }
.lcars-panel[data-accent="lavender"]::before { background: var(--lcars-lavender); }
.lcars-panel[data-accent="periwinkle"]::before { background: var(--lcars-periwinkle); }
.lcars-panel[data-accent="rose"]::before { background: var(--lcars-rose); }
.lcars-panel[data-accent="teal"]::before { background: var(--lcars-teal); }
.lcars-panel[data-accent="gold"]::before { background: var(--lcars-gold); }
.lcars-panel[data-accent="red"]::before { background: var(--lcars-red); }

.lcars-panel-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--lcars-cream);
  margin-bottom: 6px;
  padding-left: 4px;
}

/* ---- LCARS Controls ---- */
.lcars-slider-group {
  margin-bottom: 6px;
}

.lcars-slider-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 11px;
  color: var(--lcars-peach);
  margin-bottom: 2px;
}

.lcars-slider-value {
  color: var(--lcars-orange);
  font-weight: 700;
  font-size: 13px;
}

.lcars-slider-detail {
  color: #665533;
  font-size: 9px;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  background: #221800;
  border-radius: 4px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--lcars-orange);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--lcars-bg);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--lcars-orange);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--lcars-bg);
}

input[type="range"][data-color="mauve"]::-webkit-slider-thumb { background: var(--lcars-mauve); }
input[type="range"][data-color="periwinkle"]::-webkit-slider-thumb { background: var(--lcars-periwinkle); }
input[type="range"][data-color="rose"]::-webkit-slider-thumb { background: var(--lcars-rose); }
input[type="range"][data-color="teal"]::-webkit-slider-thumb { background: var(--lcars-teal); }
input[type="range"][data-color="gold"]::-webkit-slider-thumb { background: var(--lcars-gold); }

/* ---- LCARS Buttons ---- */
.lcars-btn {
  font-family: 'Antonio', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  padding: 8px 16px;
  border-radius: var(--pill-radius);
  cursor: pointer;
  transition: filter 0.15s, transform 0.1s;
  color: var(--lcars-bg);
}

.lcars-btn:hover { filter: brightness(1.2); transform: scale(1.02); }
.lcars-btn:active { transform: scale(0.98); }

.lcars-btn-run { background: var(--lcars-teal); }
.lcars-btn-pause { background: var(--lcars-red); }
.lcars-btn-reset { background: #443322; color: var(--lcars-peach); }

.lcars-btn-group {
  display: flex;
  gap: 6px;
}

.lcars-btn-group .lcars-btn { flex: 1; }

/* ---- View Mode Buttons ---- */
.lcars-view-btns {
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
}

.lcars-view-btn {
  font-family: 'Antonio', sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid #332200;
  background: transparent;
  color: var(--lcars-peach);
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.lcars-view-btn:hover { border-color: var(--lcars-orange); }

.lcars-view-btn.active {
  background: var(--lcars-orange);
  color: var(--lcars-bg);
  border-color: var(--lcars-orange);
}

/* ---- Observables ---- */
.lcars-obs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 12px;
  font-size: 12px;
}

.lcars-obs-grid .obs-label { color: var(--lcars-peach); }
.lcars-obs-grid .obs-value { font-weight: 700; text-align: right; }

/* ---- Validation Badges ---- */
.lcars-badges {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.lcars-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 4px;
  border: 1px solid transparent;
}

.lcars-badge.pass {
  background: rgba(0,136,136,0.1);
  border-color: rgba(0,136,136,0.3);
  color: var(--lcars-teal);
}

.lcars-badge.fail {
  background: rgba(204,68,68,0.1);
  border-color: rgba(204,68,68,0.3);
  color: var(--lcars-red);
}

.lcars-badge.warn {
  background: rgba(255,153,0,0.1);
  border-color: rgba(255,153,0,0.3);
  color: var(--lcars-orange);
}

.lcars-badge-icon { font-weight: 700; }
.lcars-badge-label { font-weight: 700; letter-spacing: 0.05em; }
.lcars-badge-detail { color: #665533; font-size: 9px; margin-left: auto; }

/* ---- Derivation Chain ---- */
.lcars-derivation {
  font-size: 10px;
  line-height: 1.8;
  color: #665533;
}

.lcars-derivation .step { color: var(--lcars-peach); }
.lcars-derivation .result { color: var(--lcars-orange); font-weight: 700; }
.lcars-derivation .key { color: var(--lcars-ice); }

/* ---- Sim Header ---- */
.sim-header {
  text-align: center;
  margin-bottom: 14px;
}

.sim-header h2 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--lcars-orange);
}

.sim-header .sim-subtitle {
  font-size: 11px;
  color: #665533;
  letter-spacing: 0.08em;
}

.sim-header .sim-author {
  font-size: 9px;
  color: #443322;
  letter-spacing: 0.1em;
  margin-top: 2px;
}

/* ---- Canvas overlay labels ---- */
.canvas-wrap {
  position: relative;
}

.canvas-label {
  position: absolute;
  font-size: 9px;
  background: rgba(0,0,0,0.85);
  padding: 2px 8px;
  border-radius: 3px;
  color: #887755;
  pointer-events: none;
}

.canvas-label.top-left { top: 5px; left: 7px; }
.canvas-label.bottom-left { bottom: 5px; left: 7px; }
.canvas-label.top-right { top: 5px; right: 7px; }

/* ---- Checkbox ---- */
.lcars-checkbox {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--lcars-peach);
  cursor: pointer;
}

.lcars-checkbox input[type="checkbox"] {
  accent-color: var(--lcars-orange);
  width: 14px;
  height: 14px;
}

/* ---- Index Page ---- */
.lcars-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  padding: 8px;
}

.lcars-sim-card {
  background: rgba(0,0,0,0.5);
  border: 1px solid #332200;
  border-radius: 4px 4px 4px 20px;
  padding: 14px 16px 14px 22px;
  position: relative;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
  text-decoration: none;
  display: block;
}

.lcars-sim-card:hover {
  border-color: var(--lcars-orange);
  transform: translateY(-2px);
}

.lcars-sim-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 8px;
  border-radius: 4px 0 0 20px;
}

.lcars-sim-card[data-cat="foundation"]::before { background: var(--lcars-periwinkle); }
.lcars-sim-card[data-cat="forces"]::before { background: var(--lcars-lavender); }
.lcars-sim-card[data-cat="cosmo"]::before { background: var(--lcars-mauve); }
.lcars-sim-card[data-cat="astro"]::before { background: var(--lcars-rose); }
.lcars-sim-card[data-cat="applied"]::before { background: var(--lcars-sky); }
.lcars-sim-card[data-cat="meta"]::before { background: var(--lcars-gold); }

.lcars-sim-card .card-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--lcars-orange);
  opacity: 0.3;
  position: absolute;
  right: 12px;
  top: 8px;
}

.lcars-sim-card .card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--lcars-cream);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.lcars-sim-card .card-physics {
  font-size: 10px;
  color: #887755;
  line-height: 1.4;
}

.lcars-sim-card .card-section {
  font-size: 9px;
  color: var(--lcars-periwinkle);
  margin-top: 6px;
  letter-spacing: 0.06em;
}

/* ---- Equation Banner ---- */
.lcars-equation-banner {
  text-align: center;
  padding: 16px;
  margin: 12px 0;
  border: 1px solid #332200;
  border-radius: 8px;
  background: rgba(255,153,0,0.03);
}

.lcars-equation-banner .eq {
  font-size: 20px;
  color: var(--lcars-orange);
  font-weight: 700;
  letter-spacing: 0.15em;
}

.lcars-equation-banner .eq-note {
  font-size: 10px;
  color: #665533;
  margin-top: 6px;
  letter-spacing: 0.1em;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  :root {
    --sidebar-width: 140px;
    --topbar-height: 48px;
  }
  .lcars-topbar-title h1 { font-size: 16px; }
  .lcars-nav-btn { font-size: 10px; padding: 4px 10px; min-height: 26px; }
  .sim-controls { width: 220px; }
}

@media (max-width: 650px) {
  .lcars-frame {
    grid-template-columns: 1fr;
    grid-template-rows: var(--topbar-height) 1fr 32px;
  }
  .lcars-sidebar { display: none; }
  .sim-layout { flex-direction: column; }
  .sim-controls { width: 100%; }
}

/* ---- Blinking cursor ---- */
@keyframes lcars-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.lcars-blink { animation: lcars-blink 1.2s ease-in-out infinite; }

/* ---- Scan line effect ---- */
.lcars-main::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    transparent 0px,
    transparent 2px,
    rgba(0,0,0,0.03) 2px,
    rgba(0,0,0,0.03) 4px
  );
  pointer-events: none;
}