/* Liquid Glass CSS System for QuickX */
:root {
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --bg-color: #0b0d12;
  --text-main: #f0f3f8;
  --text-muted: #94a3b8;
  --accent-color: #38bdf8;
  --accent-prominent: #0284c7;

  /* Glass Token System */
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-border: 1px solid rgba(255, 255, 255, 0.15);
  --glass-blur: blur(16px) saturate(180%);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
}

/* Accessibility / Reduced Motion / High Contrast Overrides */
@media (prefers-reduced-transparency: reduce) {
  :root {
    --glass-bg: #1e293b;
    --glass-border: 1px solid #475569;
    --glass-blur: none;
  }
}

@media (prefers-contrast: more) {
  :root {
    --glass-bg: #0f172a;
    --glass-border: 2px solid #ffffff;
    --glass-blur: none;
    --text-main: #ffffff;
  }
}

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

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

#app-container {
  display: grid;
  grid-template-columns: 320px 1fr 340px;
  grid-template-rows: 60px 1fr;
  height: 100vh;
  width: 100vw;
}

/* Header Glass Container (Target max 4 glass layers on screen) */
header {
  grid-column: 1 / -1;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 10;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* Glass Panel Styling */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin: 12px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
}

/* Central Viewer Canvas */
#viewer-container {
  grid-column: 2;
  grid-row: 2;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

#blink-canvas {
  width: 400px;
  height: 400px;
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  box-shadow: 0 0 40px rgba(0,0,0,0.8);
  border-radius: 4px;
}

/* Floating Glass Overlay Controls */
#floating-controls {
  position: absolute;
  bottom: 24px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 40px;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--glass-shadow);
  z-index: 5;
}

/* Liquid Glass Segmented Control */
.segmented-control {
  display: flex;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 20px;
  padding: 3px;
  border: 1px solid rgba(255,255,255,0.05);
}

.segmented-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.segmented-btn.active {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-main);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.glass-btn {
  background: var(--glass-bg);
  border: var(--glass-border);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.glass-btn-prominent {
  background: var(--accent-prominent);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
}

.glass-btn[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.false-color-note {
  color: #f0abfc;
  font-size: 10px;
}

/* Form Inputs */
input[type="text"], select {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  color: var(--text-main);
  font-size: 0.9rem;
}

input[type="text"]:focus {
  outline: 2px solid var(--accent-color);
}

/* Metadata Overlays (opaque: keeps the on-screen glass budget at <=4 layers) */
.frame-meta-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(0,0,0,0.7);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  border: 1px solid rgba(255,255,255,0.1);
  line-height: 1.4;
}

/* Header layout */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

#status-bar {
  flex: 1;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 0 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.phone-only {
  display: none;
}

.field-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.coord-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.speed-label {
  font-size: 0.7rem;
  color: var(--text-muted);
}

#floating-controls select {
  width: auto;
  padding: 6px 8px;
  font-size: 0.78rem;
}

button:disabled {
  opacity: 0.5;
  cursor: wait;
}

/* Badge lines */
.badge-line {
  font-size: 0.72rem;
}

.badge-obsid {
  color: var(--accent-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.badge-muted {
  color: var(--text-muted);
}

/* Epoch list */
#obs-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.epoch-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 8px;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  border-bottom-color: rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
  padding: 8px;
  color: var(--text-main);
  font: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}

.epoch-item:hover {
  background: rgba(255,255,255,0.05);
}

.epoch-item.epoch-active {
  background: rgba(56,189,248,0.12);
  border-color: var(--accent-color);
}

.epoch-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--accent-color);
  overflow: hidden;
  text-overflow: ellipsis;
}

.epoch-date {
  color: var(--text-muted);
  font-size: 0.65rem;
}

.epoch-wave {
  color: #fcd34d;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  text-align: right;
}

.epoch-det {
  color: var(--text-muted);
  font-size: 0.65rem;
  text-align: right;
}

/* Sky map */
#map-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#aladin-lite {
  height: 220px;
  background: #000;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  overflow: hidden;
}

#skyview-map {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.skyview-caption {
  color: var(--text-muted);
  font-size: 0.68rem;
  text-align: center;
}

#skyview-image {
  display: block;
  width: min(220px, 100%);
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  background: #000;
  cursor: crosshair;
}

#map-fallback {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  background: rgba(0,0,0,0.35);
  border: 1px dashed rgba(255,255,255,0.25);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Tour banner + timeline bar: opaque surfaces (glass budget) */
#tour-banner {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(560px, 90%);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #10151f;
  border: var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
  font-size: 0.85rem;
  z-index: 6;
}

#tour-text {
  flex: 1;
  line-height: 1.4;
}

#timeline-bar {
  position: absolute;
  bottom: 88px;
  left: 50%;
  transform: translateX(-50%);
  width: min(480px, 85%);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: #10151f;
  border: var(--glass-border);
  border-radius: 24px;
  z-index: 5;
}

#timeline-slider {
  flex: 1;
  accent-color: var(--accent-color);
}

#timeline-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Inspector details + moving-object panel */
.detail-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.75rem;
  padding: 2px 0;
}

.detail-row span {
  color: var(--text-muted);
}

.detail-note {
  font-size: 0.68rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 6px;
}

.attribution {
  font-size: 0.62rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

#moving-panel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

#moving-panel h4, #frame-wcs h4 {
  font-size: 0.85rem;
  color: var(--accent-color);
}

.moving-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.68rem;
}

.moving-table th, .moving-table td {
  text-align: left;
  padding: 3px 4px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.moving-table th {
  color: var(--text-muted);
  font-weight: 600;
}

/* Beginner/Expert: expert-only controls hidden unless body.expert */
body:not(.expert) .expert-only {
  display: none !important;
}

/* Low-data mode: opaque surfaces, no blur, no motion */
body.low-data {
  --glass-bg: #151a23;
  --glass-blur: none;
  --glass-shadow: none;
}

body.low-data .segmented-btn {
  transition: none;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* Opaque fallback when backdrop-filter is unsupported */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  :root {
    --glass-bg: #161b26;
    --glass-blur: none;
  }
}

/* Windows High Contrast / forced colors */
@media (forced-colors: active) {
  header, .glass-panel, #floating-controls, .glass-btn,
  .segmented-control, #tour-banner, #timeline-bar, .frame-meta-badge {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: Canvas;
    border: 1px solid CanvasText;
    box-shadow: none;
  }
  .segmented-btn.active, .glass-btn[aria-pressed="true"], .epoch-item.epoch-active {
    background: Highlight;
    color: HighlightText;
  }
  #blink-canvas {
    forced-color-adjust: none;
  }
}

/* Responsive phone rules */
@media (max-width: 768px) {
  #app-container {
    grid-template-columns: 1fr;
    grid-template-rows: 50px 1fr;
  }
  .sidebar, .inspector {
    display: none;
  }
  .phone-only {
    display: inline-flex;
  }
  #viewer-container {
    grid-column: 1;
  }
  body.sidebar-open .sidebar {
    display: flex;
    position: fixed;
    top: 50px;
    left: 0;
    bottom: 0;
    width: min(320px, 85vw);
    margin: 0;
    border-radius: 0;
    background: #10151f;
    z-index: 20;
  }
  #blink-canvas {
    width: 90vw;
    height: auto;
    aspect-ratio: 1;
  }
  #floating-controls {
    flex-wrap: wrap;
    justify-content: center;
    max-width: 92vw;
    bottom: 12px;
    border-radius: 20px;
  }
  #timeline-bar {
    bottom: 120px;
  }
  .header-actions .glass-btn {
    padding: 6px 10px;
    font-size: 0.72rem;
  }
  #status-bar {
    font-size: 0.62rem;
    padding: 0 6px;
  }
}