/* EM Spectrum Explorer - Demo-specific styles */

:root {
  --demo-max-width: 1200px;
}

/* Mode Toggle Tabs */
.mode-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 1.5rem;
  background: rgba(18, 18, 31, 0.9);
  border-radius: 8px;
  padding: 0.25rem;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.mode-tab {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: 6px;
}

.mode-tab:hover:not(.active) {
  color: var(--text-primary);
  background: var(--space-light);
}

.mode-tab.active {
  background: var(--accent-blue);
  color: var(--space-black);
}

.mode-tab:focus {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

/* Main Spectrum Panel */
.spectrum-panel {
  background: rgba(18, 18, 31, 0.95);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

/* EM Spectrum Bar */
.em-spectrum-container {
  position: relative;
  margin-bottom: 1rem;
}

.em-spectrum-bar {
  height: 60px;
  border-radius: 8px;
  position: relative;
  cursor: pointer;
  background: linear-gradient(to right,
    #800000 0%,       /* Radio - dark red */
    #cc3300 8%,       /* Microwave - orange-red */
    #ff3300 15%,      /* Far IR - red */
    #ff0000 22%,      /* IR - red */
    #ff0000 28%,      /* Near IR */
    #ff0000 32%,      /* Visible red edge */
    #ff4500 34%,
    #ffa500 37%,
    #ffff00 40%,
    #00ff00 44%,
    #00ffff 48%,
    #0000ff 52%,
    #4b0082 55%,      /* Visible violet edge */
    #8b00ff 58%,      /* UV */
    #9932cc 65%,      /* X-ray - purple */
    #4b0082 80%,      /* Hard X-ray */
    #1a0033 100%      /* Gamma - deep purple/black */
  );
  box-shadow: 0 0 20px rgba(100, 100, 255, 0.3);
}

.em-spectrum-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 8px;
  background: linear-gradient(to bottom,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 50%,
    rgba(0, 0, 0, 0.2) 100%
  );
  pointer-events: none;
}

/* Band Labels */
.band-labels {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.band-label {
  text-align: center;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.band-label:hover {
  color: var(--text-primary);
  background: var(--space-light);
}

.band-label.active {
  color: var(--accent-gold);
  background: var(--space-medium);
}

/* Wavelength Scale */
.wavelength-scale {
  display: flex;
  justify-content: space-between;
  padding: 0.25rem 0;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}

.wavelength-tick {
  text-align: center;
  position: relative;
}

.wavelength-tick::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 6px;
  background: var(--text-muted);
}

/* Size Comparison */
.size-comparison {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 0.5rem 0;
  font-size: 0.6rem;
  color: var(--text-muted);
  opacity: 0.8;
}

.size-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.size-icon {
  font-size: 1rem;
}

/* Selection Marker */
.selection-marker {
  position: absolute;
  top: -10px;
  width: 4px;
  height: calc(100% + 20px);
  background: var(--accent-gold);
  transform: translateX(-50%);
  pointer-events: none;
  display: none;
  z-index: 10;
  box-shadow: 0 0 10px var(--accent-gold);
}

.selection-marker::after {
  content: attr(data-label);
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: var(--accent-gold);
  white-space: nowrap;
  background: var(--space-black);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

/* Band Highlight Overlay */
.band-highlight {
  position: absolute;
  top: 0;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid var(--accent-gold);
  border-radius: 4px;
  pointer-events: none;
  display: none;
}

/* Mode Content Panels */
.mode-content {
  display: none;
}

.mode-content.active {
  display: block;
}

/* Explore Mode */
.band-info-panel {
  background: var(--space-medium);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  min-height: 120px;
}

.band-info-title {
  font-size: 1.1rem;
  color: var(--accent-gold);
  margin: 0 0 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.band-info-wavelength {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-blue);
  margin-bottom: 0.5rem;
}

.band-info-description {
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

.band-info-examples {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
}

.band-info-examples strong {
  color: var(--text-primary);
}

/* Convert Mode */
.converter-panel {
  background: var(--space-medium);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
}

.converter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.converter-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.converter-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.converter-input-row {
  display: flex;
  gap: 0.5rem;
}

.converter-input {
  flex: 1;
  padding: 0.5rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  background: var(--space-deep);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  text-align: right;
}

.converter-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 8px rgba(93, 173, 226, 0.3);
}

.converter-unit-select {
  padding: 0.5rem;
  background: var(--space-light);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  cursor: pointer;
  min-width: 70px;
}

.converter-unit-select:focus {
  outline: 2px solid var(--accent-blue);
}

.converter-result {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--accent-gold);
  padding: 0.5rem;
  background: var(--space-deep);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  text-align: right;
}

.converter-formula {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.formula-display {
  font-family: var(--font-mono);
  color: var(--accent-blue);
  margin: 0.5rem 0;
}

/* Telescopes Mode */
.telescopes-panel {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.75rem;
}

.telescope-card {
  background: var(--space-medium);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.telescope-card:hover {
  border-color: var(--accent-blue);
  background: var(--space-light);
}

.telescope-card.active {
  border-color: var(--accent-gold);
  background: rgba(244, 208, 63, 0.1);
}

.telescope-card:focus {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

.telescope-icon {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.telescope-name {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

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

.telescope-info-panel {
  margin-top: 1rem;
  background: var(--space-medium);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  display: none;
}

.telescope-info-panel.visible {
  display: block;
}

/* Objects Mode */
.objects-panel {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}

.object-card {
  background: var(--space-medium);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.object-card:hover {
  border-color: var(--accent-blue);
  background: var(--space-light);
}

.object-card.active {
  border-color: var(--accent-gold);
  background: rgba(244, 208, 63, 0.1);
}

.object-card:focus {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

.object-icon {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.object-name {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
}

.object-info-panel {
  margin-top: 1rem;
  background: var(--space-medium);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  display: none;
}

.object-info-panel.visible {
  display: block;
}

/* Readout Panel */
.readout-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-top: 1rem;
}

/* Insight Box */
.insight-box {
  background: rgba(18, 18, 31, 0.9);
  border-left: 3px solid var(--accent-gold);
  padding: 1rem;
  border-radius: 0 8px 8px 0;
  margin-top: 1rem;
  font-size: 0.875rem;
  line-height: 1.5;
}

.insight-box h4 {
  margin: 0 0 0.5rem 0;
  color: var(--accent-gold);
  font-size: 0.875rem;
}

.insight-box p {
  margin: 0;
  color: var(--text-secondary);
}

.insight-box .formula {
  font-family: var(--font-mono);
  color: var(--accent-blue);
  margin: 0.5rem 0;
}

/* Responsive */
@media (max-width: 768px) {
  .mode-tabs {
    flex-wrap: wrap;
    width: 100%;
  }

  .mode-tab {
    flex: 1 1 auto;
    text-align: center;
  }

  .converter-grid {
    grid-template-columns: 1fr;
  }

  .readout-panel {
    grid-template-columns: repeat(2, 1fr);
  }

  .telescopes-panel,
  .objects-panel {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus indicators */
.mode-tab:focus-visible,
.telescope-card:focus-visible,
.object-card:focus-visible,
.band-label:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}