/* ==========================================================================
   CasaObsidian | Living Neural Knowledge Graph Styles
   Theme: Cosmic Cyber-Organic / Neural Second Brain
   ========================================================================== */

:root {
  --bg-deep: #07090E;
  --bg-surface: #0E131F;
  --bg-surface-elevated: #151D2E;
  --bg-surface-hover: #1D283F;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 240, 255, 0.35);

  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --accent-cyan: #00F0FF;
  --accent-blue: #3B82F6;
  --accent-amber: #F59E0B;
  --accent-emerald: #10B981;
  --accent-violet: #8B5CF6;
  --accent-rose: #F43F5E;

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --drawer-width: 440px;
  --header-height: 64px;
  --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1);
}

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

body.neural-body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  -webkit-font-smoothing: antialiased;
}

/* App Layout */
.app-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  position: relative;
  overflow: hidden;
}

/* Header */
.neural-header {
  height: var(--header-height);
  background: rgba(14, 19, 31, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 40;
  gap: 16px;
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.neural-glyph {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.core-pulse {
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
}

.brand-meta {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.1;
}

.brand-sub {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  justify-content: flex-end;
}

/* Search Box */
.search-box {
  position: relative;
  width: 280px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  height: 38px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0 12px 0 36px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 13px;
  outline: none;
  transition: all 0.2s ease;
}

.search-box input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px rgba(0, 240, 255, 0.15);
}

.search-dropdown {
  position: absolute;
  top: 44px;
  left: 0;
  right: 0;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
  max-height: 320px;
  overflow-y: auto;
  z-index: 100;
}

.search-dropdown.hidden {
  display: none;
}

.search-item {
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background 0.15s ease;
}

.search-item:last-child {
  border-bottom: none;
}

.search-item:hover, .search-item.selected {
  background: var(--bg-surface-hover);
}

.search-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.search-item-meta {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Filter Chips */
.folder-filters {
  display: flex;
  gap: 6px;
  background: var(--bg-surface-elevated);
  padding: 3px;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
}

.filter-chip {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-chip:hover {
  color: var(--text-primary);
}

.filter-chip.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Telemetry Bar */
.telemetry-bar {
  display: flex;
  align-items: center;
  gap: 12px;
}

.metric-tag {
  display: flex;
  align-items: baseline;
  gap: 4px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 6px;
}

.metric-num {
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.metric-lbl {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.live-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
}

.live-pill.connecting {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.25);
  color: var(--accent-amber);
}

.live-pill.error {
  background: rgba(244, 63, 94, 0.1);
  border-color: rgba(244, 63, 94, 0.25);
  color: var(--accent-rose);
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
}

/* Canvas Viewport */
.canvas-viewport {
  flex: 1;
  position: relative;
  background-color: var(--bg-deep);
  overflow: hidden;
  cursor: grab;
}

.canvas-viewport:active {
  cursor: grabbing;
}

#graphCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Canvas HUD Controls */
.canvas-hud {
  position: absolute;
  bottom: 24px;
  left: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 20;
}

.hud-btn {
  width: 36px;
  height: 36px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  backdrop-filter: blur(8px);
}

.hud-btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Hover Tooltip */
.hover-tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(14, 19, 31, 0.95);
  border: 1px solid var(--border-active);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  z-index: 30;
  transform: translate(-50%, -130%);
  transition: opacity 0.1s ease;
  white-space: nowrap;
}

.hover-tooltip.hidden {
  opacity: 0;
}

/* Slide-out Preview Drawer */
.preview-drawer {
  position: absolute;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  width: var(--drawer-width);
  background: rgba(14, 19, 31, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--border-subtle);
  box-shadow: -16px 0 40px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  transform: translateX(0);
  transition: transform 0.35s var(--transition-smooth);
  z-index: 50;
}

.preview-drawer.closed {
  transform: translateX(100%);
}

.drawer-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.drawer-badge {
  font-size: 11px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  background: rgba(0, 240, 255, 0.1);
  color: var(--accent-cyan);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: color 0.15s ease;
}

.btn-close:hover {
  color: var(--text-primary);
}

.drawer-meta {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.drawer-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.drawer-sub {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  word-break: break-all;
}

.drawer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.note-tag {
  font-size: 11px;
  color: var(--accent-violet);
  background: rgba(139, 92, 246, 0.12);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
}

.drawer-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(0, 0, 0, 0.2);
  gap: 12px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-val {
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.stat-lbl {
  font-size: 11px;
  color: var(--text-muted);
}

.drawer-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 20px;
}

.tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  padding: 12px 16px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* Markdown Preview Styling */
.markdown-preview {
  font-size: 14px;
  line-height: 1.65;
  color: #CBD5E1;
}

.markdown-preview h1, .markdown-preview h2, .markdown-preview h3, .markdown-preview h4 {
  color: #F8FAFC;
  margin: 1.2em 0 0.5em 0;
  font-weight: 700;
}

.markdown-preview h1 { font-size: 20px; }
.markdown-preview h2 { font-size: 17px; }
.markdown-preview h3 { font-size: 15px; }

.markdown-preview p {
  margin-bottom: 1em;
}

.markdown-preview a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.markdown-preview code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 5px;
  border-radius: 4px;
  color: #F1F5F9;
}

.markdown-preview pre {
  background: #060910;
  padding: 12px;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 1em;
  border: 1px solid var(--border-subtle);
}

.markdown-preview pre code {
  background: transparent;
  padding: 0;
}

.markdown-preview blockquote {
  border-left: 3px solid var(--accent-cyan);
  padding-left: 14px;
  color: var(--text-muted);
  margin-bottom: 1em;
}

.markdown-preview ul, .markdown-preview ol {
  padding-left: 20px;
  margin-bottom: 1em;
}

.markdown-preview li {
  margin-bottom: 0.3em;
}

/* Connections Tab */
.connections-group {
  margin-bottom: 24px;
}

.connections-group h3 {
  font-size: 13px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.links-list {
  list-style: none;
}

.links-list li {
  padding: 8px 12px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  margin-bottom: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.links-list li:hover {
  border-color: var(--accent-cyan);
  background: var(--bg-surface-hover);
  color: var(--accent-cyan);
}

/* Live Synaptic Ticker Bar */
.synapse-ticker-bar {
  position: absolute;
  bottom: 16px;
  left: 20px;
  right: 20px;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  pointer-events: auto;
}

.ticker-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.25);
  padding: 3px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}

.ticker-content {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.ticker-content .highlight {
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 900px) {
  .folder-filters { display: none; }
  .search-box { width: 180px; }
  :root { --drawer-width: 100vw; }
  .synapse-ticker-bar {
    left: 10px;
    right: 10px;
    bottom: 10px;
  }
}