/* ==========================================================================
   Learning Narrative Kit (LNK) — Universal Starter Theme
   Clean, Accessible, High-Contrast Dark Theme with Dual-Track Modes
   ========================================================================== */

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-hover: #273549;
  --surface-border: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.25);
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.25);
  --success: #10b981;
  --danger: #ef4444;

  /* Term Tint Colors */
  --term-telemetry: #38bdf8;
  --term-telemetry-bg: rgba(56, 189, 248, 0.12);
  --term-architecture: #a78bfa;
  --term-architecture-bg: rgba(167, 139, 250, 0.12);
  --term-analytical: #f59e0b;
  --term-analytical-bg: rgba(245, 158, 11, 0.12);
  --term-pedagogy: #34d399;
  --term-pedagogy-bg: rgba(52, 211, 153, 0.12);
  --term-transport: #ec4899;
  --term-transport-bg: rgba(236, 72, 153, 0.12);

  --flash: rgba(245, 158, 11, 0.55);
}

/* Global Reset & Typography: Modern System Sans-Serif */
* {
  box-sizing: border-box;
}

html, body {
  background-color: var(--bg) !important;
  color: var(--text-main) !important;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif !important;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
}

/* ==========================================================================
   Docsify Left Sidebar Navigation
   ========================================================================== */

.sidebar {
  background-color: #0b1220 !important;
  border-right: 1px solid var(--surface-border) !important;
  color: var(--text-muted) !important;
  font-size: 0.90rem;
  padding-top: 1rem;
}

.sidebar .app-name {
  margin: 0.5rem 1rem 1rem !important;
  text-align: left;
}

.sidebar .app-name-link {
  color: #ffffff !important;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

/* Dual-Track Mode Selector in Sidebar */
.lnk-mode-switcher {
  margin: 0.75rem 1rem 1.25rem;
  padding: 0.35rem;
  background: #0f172a;
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  display: flex;
  gap: 0.25rem;
}

.lnk-mode-btn {
  flex: 1;
  padding: 0.4rem 0.3rem;
  background: transparent;
  border: none;
  border-radius: 5px;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease-in-out;
}

.lnk-mode-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.lnk-mode-btn.active {
  background: rgba(56, 189, 248, 0.18);
  color: var(--primary);
  font-weight: 700;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.sidebar .search {
  border-bottom: 1px solid var(--surface-border);
  padding: 0.75rem 1rem;
}

.sidebar .search input {
  background-color: #0f172a !important;
  border: 1px solid var(--surface-border) !important;
  color: #ffffff !important;
  border-radius: 6px !important;
  font-size: 0.88rem !important;
  padding: 0.45rem 0.75rem !important;
  width: 100%;
}

.sidebar .search input:focus {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 2px var(--primary-glow) !important;
}

.sidebar ul {
  padding-left: 0.5rem;
}

.sidebar ul li {
  margin: 0.35rem 0;
}

.sidebar ul li p {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin: 1.2rem 0 0.4rem 0.75rem;
}

.sidebar ul li a {
  color: var(--text-muted) !important;
  font-weight: 400;
  padding: 0.3rem 0.75rem;
  display: block;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
  text-decoration: none !important;
}

.sidebar ul li a:hover {
  color: var(--primary) !important;
  background: rgba(56, 189, 248, 0.08);
}

.sidebar ul li.active > a {
  color: var(--primary) !important;
  font-weight: 600;
  background: rgba(56, 189, 248, 0.12);
  border-left: 3px solid var(--primary);
}

.sidebar-toggle {
  background-color: transparent !important;
}

/* ==========================================================================
   Two-Column Power Layout (Breakpoint: 1100px)
   ========================================================================== */

.content {
  background-color: var(--bg) !important;
  min-height: 100vh;
  padding: 2rem 1.75rem 3.5rem !important;
}

@media (min-width: 1100px) {
  .content {
    display: flex !important;
    justify-content: center !important;
    align-items: flex-start !important;
    gap: 2rem !important;
  }
  .markdown-section {
    flex: 1 1 820px !important;
    max-width: 860px !important;
    margin: 0 !important;
  }
}

@media (max-width: 1099px) {
  .content {
    display: block !important;
    padding: 1.25rem 1rem !important;
  }
  .markdown-section {
    max-width: 100% !important;
    margin: 0 auto !important;
  }
}

/* Main Content Surface Card */
.markdown-section {
  background: var(--surface) !important;
  border: 1px solid var(--surface-border) !important;
  border-radius: 12px !important;
  padding: 2.75rem 2.5rem !important;
  min-width: 0 !important;
  color: var(--text-main) !important;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}

@media (max-width: 640px) {
  .markdown-section {
    padding: 1.75rem 1.25rem !important;
    border-radius: 8px !important;
  }
}

/* ==========================================================================
   Mode Toggles Behavior (Curriculum, Reader, Workbench)
   ========================================================================== */

/* Reader Mode: Streamlined for narrative reading */
body.mode-reader .sidebar ul li[data-track="workbench"] {
  opacity: 0.35;
  transition: opacity 0.2s;
}
body.mode-reader .sidebar ul li[data-track="workbench"]:hover {
  opacity: 1;
}
body.mode-reader .sidebar ul li[data-track="narrative"] > a {
  font-weight: 600;
  color: #ffffff !important;
}

/* Workbench Mode: Streamlined for hands-on drills */
body.mode-workbench .sidebar ul li[data-track="narrative"] {
  opacity: 0.35;
  transition: opacity 0.2s;
}
body.mode-workbench .sidebar ul li[data-track="narrative"]:hover {
  opacity: 1;
}
body.mode-workbench .sidebar ul li[data-track="workbench"] > a {
  font-weight: 600;
  color: #ffffff !important;
}

/* ==========================================================================
   Typography & Elements
   ========================================================================== */

.markdown-section h1 {
  font-size: 2rem !important;
  font-weight: 700 !important;
  color: #ffffff !important;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin-bottom: 0.6rem;
}

.markdown-section h2 {
  font-size: 1.35rem !important;
  font-weight: 600 !important;
  color: var(--primary) !important;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--surface-border) !important;
  line-height: 1.35;
}

.markdown-section h3 {
  font-size: 1.12rem !important;
  font-weight: 600 !important;
  color: #ffffff !important;
  margin-top: 2rem;
  margin-bottom: 0.6rem;
}

.markdown-section h4 {
  font-size: 0.95rem !important;
  font-weight: 600 !important;
  color: var(--text-muted) !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 1.5rem;
}

.markdown-section p,
.markdown-section li {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--text-main) !important;
  margin-bottom: 1.2rem;
}

.markdown-section strong {
  font-weight: 600;
  color: #ffffff;
}

.markdown-section a {
  color: var(--primary) !important;
  text-decoration: none;
}

.markdown-section a:hover {
  text-decoration: underline;
}

.markdown-section hr {
  border: none;
  border-top: 1px solid var(--surface-border);
  margin: 2.5rem 0;
}

.markdown-section blockquote {
  font-style: normal;
  border-left: 3px solid var(--primary) !important;
  background: rgba(15, 23, 42, 0.65) !important;
  border-radius: 0 8px 8px 0;
  padding: 0.85rem 1.25rem !important;
  color: var(--text-main) !important;
  margin: 1.5rem 0 !important;
}

/* ==========================================================================
   In-Prose Terms & Hover System
   ========================================================================== */

.term {
  cursor: pointer;
  font-weight: 500;
  border-radius: 4px;
  padding: 1px 4px;
  border-bottom: none !important;
  text-decoration: none !important;
  transition: all 0.15s ease-in-out;
  background: var(--term-telemetry-bg);
}

.term.telemetry { background: var(--term-telemetry-bg); color: var(--term-telemetry); }
.term.architecture { background: var(--term-architecture-bg); color: var(--term-architecture); }
.term.analytical { background: var(--term-analytical-bg); color: var(--term-analytical); }
.term.pedagogy { background: var(--term-pedagogy-bg); color: var(--term-pedagogy); }
.term.transport { background: var(--term-transport-bg); color: var(--term-transport); }

.term:hover {
  filter: brightness(1.2);
  box-shadow: 0 0 0 1px currentColor;
}

.term.flash, .story-highlight {
  background: var(--flash) !important;
  box-shadow: 0 0 0 3px var(--flash) !important;
  border-radius: 4px;
  animation: flash-pulse 1.4s ease-out;
}

@keyframes flash-pulse {
  0% { background-color: rgba(245, 158, 11, 0.7); box-shadow: 0 0 0 5px rgba(245, 158, 11, 0.4); }
  70% { background-color: rgba(245, 158, 11, 0.25); box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.15); }
  100% { background-color: transparent; box-shadow: none; }
}

/* Floating Hover Tooltip */
#lnk-tooltip {
  position: absolute;
  display: none;
  background: #0f172a;
  border: 1px solid var(--primary);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.8);
  border-radius: 8px;
  padding: 0.95rem 1.1rem;
  width: 320px;
  max-width: calc(100vw - 24px);
  z-index: 10000;
  pointer-events: none;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-main);
}

#lnk-tooltip .tt-tier {
  display: inline-block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 7px;
  border-radius: 4px;
  margin-bottom: 0.45rem;
  font-weight: 700;
  background: rgba(56, 189, 248, 0.18);
  color: var(--primary);
}

#lnk-tooltip .tt-title {
  font-weight: 700;
  color: #ffffff;
  font-size: 0.98rem;
  margin-bottom: 0.35rem;
}

#lnk-tooltip .tt-body {
  color: var(--text-main);
}

#lnk-tooltip .tt-context {
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-size: 0.82rem;
  border-top: 1px solid var(--surface-border);
  padding-top: 0.45rem;
  font-style: italic;
}

/* ==========================================================================
   Docked Right Aside Glossary Drawer
   ========================================================================== */

#lnk-glossary-aside {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  min-height: 0;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}

@media (min-width: 1100px) {
  #lnk-glossary-aside {
    flex: 0 0 340px;
    width: 340px;
    position: sticky;
    top: 2rem;
    height: calc(100vh - 4rem);
  }
}

@media (max-width: 1099px) {
  #lnk-glossary-aside {
    width: 100%;
    position: static;
    height: auto;
    margin-top: 2.5rem;
  }
}

#lnk-glossary-aside h3 {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
  color: #ffffff;
}

.sidebar-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.filter-bar button {
  flex: 1 1 auto;
  padding: 0.4rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--surface-border);
  background: #0f172a;
  color: var(--text-muted);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.filter-bar button:hover {
  color: #ffffff;
  border-color: var(--primary);
}

.filter-bar button.active {
  border-color: var(--primary);
  color: #ffffff;
  background: rgba(56, 189, 248, 0.18);
}

#search-box {
  width: 100%;
  padding: 0.55rem 0.75rem;
  background: #0f172a;
  border: 1px solid var(--surface-border);
  border-radius: 6px;
  color: #ffffff;
  font-size: 0.86rem;
  margin-bottom: 0.75rem;
}

#search-box:focus {
  outline: 1px solid var(--primary);
}

.term-list {
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 180px;
  max-height: calc(100vh - 24rem);
  padding-right: 4px;
}

@media (max-width: 1099px) {
  .term-list {
    max-height: 280px;
  }
}

.term-item {
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.84rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s;
  margin-bottom: 3px;
}

.term-item:hover, .term-item.selected {
  background: #334155;
  color: #ffffff;
}

.term-item .badge {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 600;
  flex-shrink: 0;
}

.term-item .badge.telemetry { color: var(--term-telemetry); background: var(--term-telemetry-bg); }
.term-item .badge.architecture { color: var(--term-architecture); background: var(--term-architecture-bg); }
.term-item .badge.analytical { color: var(--term-analytical); background: var(--term-analytical-bg); }
.term-item .badge.pedagogy { color: var(--term-pedagogy); background: var(--term-pedagogy-bg); }
.term-item .badge.transport { color: var(--term-transport); background: var(--term-transport-bg); }

/* Detail Panel inside Glossary Drawer */
.detail-panel {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--surface-border);
  flex: 0 0 auto;
  max-height: 42%;
  overflow-y: auto;
}

.detail-panel.empty {
  color: var(--text-muted);
  font-size: 0.80rem;
  font-style: italic;
}

.detail-panel .d-title {
  font-weight: 700;
  color: #ffffff;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.detail-panel .d-tier {
  display: inline-block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1px 6px;
  border-radius: 3px;
  margin-bottom: 0.45rem;
  font-weight: 600;
  background: rgba(56, 189, 248, 0.18);
  color: var(--primary);
}

.detail-panel .d-def {
  font-size: 0.84rem;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 0.4rem;
}

.detail-panel .d-context {
  font-size: 0.80rem;
  color: var(--text-muted);
  font-style: italic;
  border-top: 1px solid var(--surface-border);
  padding-top: 0.35rem;
}

/* ==========================================================================
   Pedagogical Components: Prediction Gate & Bridge Card
   ========================================================================== */

/* Interactive Prediction Gates (Commit Before You Inspect) */
.prediction-gate {
  margin: 2rem 0;
  padding: 1.25rem 1.45rem;
  background: #0f172a;
  border: 1px solid var(--surface-border);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.prediction-gate h4 {
  margin-top: 0 !important;
  color: var(--accent) !important;
  font-size: 0.95rem !important;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

details.reveal-gate {
  margin-top: 1rem;
  border-top: 1px dashed var(--surface-border);
  padding-top: 0.75rem;
}

details.reveal-gate summary {
  cursor: pointer;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.4rem 0;
  outline: none;
  user-select: none;
}

details.reveal-gate summary:hover {
  text-decoration: underline;
}

details.reveal-gate .reveal-content {
  margin-top: 0.85rem;
  padding: 1.15rem 1.25rem;
  background: rgba(30, 41, 59, 0.75);
  border: 1px solid var(--surface-border);
  border-radius: 6px;
}

/* Chapter Bridge Card (Story Track to Workbench Track) */
.bridge-card {
  margin: 3rem 0 1.5rem;
  padding: 1.5rem 1.75rem;
  background: linear-gradient(145deg, #131d31, #0f172a);
  border: 1px solid var(--surface-border);
  border-left: 4px solid var(--primary);
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}

.bridge-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.bridge-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.45rem;
}

.bridge-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

.bridge-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.2rem;
  background: var(--primary);
  color: #0b1220 !important;
  text-decoration: none !important;
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: 6px;
  transition: transform 0.15s, opacity 0.15s;
}

.bridge-btn:hover {
  opacity: 0.92;
  transform: translateX(2px);
}

/* ==========================================================================
   Code Blocks, High-Contrast Tables & Scene Artifacts
   ========================================================================== */

code, pre {
  font-family: Consolas, Monaco, "Courier New", monospace !important;
}

.markdown-section code {
  background: rgba(0, 0, 0, 0.4) !important;
  padding: 2px 6px !important;
  border-radius: 4px !important;
  color: #f1f5f9 !important;
  font-size: 0.88em !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.markdown-section pre {
  background: #0b1220 !important;
  border: 1px solid var(--surface-border) !important;
  border-radius: 8px !important;
  padding: 1rem 1.25rem !important;
  overflow-x: auto !important;
}

.markdown-section pre > code {
  background: transparent !important;
  border: none !important;
  color: #d1fae5 !important;
}

/* High-Contrast Tables */
.markdown-section table {
  display: table !important;
  width: 100% !important;
  border-collapse: collapse !important;
  border: 1px solid var(--surface-border) !important;
  border-radius: 6px !important;
  margin: 1.75rem 0 !important;
  background: #0f172a !important;
}

.markdown-section table th {
  background-color: #111827 !important;
  color: #ffffff !important;
  font-size: 0.78rem !important;
  font-weight: 600 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.05em !important;
  border-bottom: 2px solid var(--surface-border) !important;
  padding: 0.7rem 0.9rem !important;
  text-align: left;
}

.markdown-section table td {
  border-bottom: 1px solid var(--surface-border) !important;
  padding: 0.75rem 0.9rem !important;
  font-size: 0.90rem !important;
  color: var(--text-main) !important;
}

.markdown-section table tr:nth-child(even) td {
  background-color: #162032 !important;
}

/* Scene Artifact: Terminal / Console */
.console-body {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  background: #0b1220;
  color: #d1fae5;
  border-radius: 8px;
  border: 1px solid var(--surface-border);
  overflow-x: auto;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.console-body .cmd { color: #fde68a; font-weight: 600; }
.console-body .cmt { color: #64748b; font-style: italic; }
.console-body .out { color: #cbd5e1; }

/* Scene Artifact: Incident Ticket */
.ticket-chrome {
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  background: #0b1220;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  margin: 1.75rem 0;
}

.ticket-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  background: #111827;
  border-bottom: 1px solid var(--surface-border);
  font-size: 0.80rem;
}

.ticket-id {
  font-family: Consolas, Monaco, "Courier New", monospace;
  color: var(--primary);
  font-weight: 700;
}

.ticket-status {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.sev {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
}

.sev.high, .sev.critical {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.sev.medium {
  background: rgba(245, 158, 11, 0.2);
  color: #fde68a;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.sev.low {
  background: rgba(16, 185, 129, 0.2);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.ticket-subject {
  padding: 0.8rem 1rem 0.2rem;
  font-weight: 700;
  color: #ffffff;
  font-size: 1.05rem;
}

.ticket-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 1rem;
  padding: 0.75rem 1rem 0.95rem;
  margin: 0;
}

.ticket-meta dt {
  font-size: 0.70rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.ticket-meta dd {
  font-size: 0.90rem;
  color: var(--text-main);
  font-weight: 500;
  margin: 0;
}