/* ==========================================================================
   AI CÓ THỂ CÓ Ý THỨC KHÔNG? | ACADEMIC POSTER STYLESHEET (A0 FORMAT)
   Khung lý luận: Chủ nghĩa duy vật biện chứng & Chủ nghĩa duy vật lịch sử
   Kích thước in A0 Portrait: 841mm x 1189mm (Tỷ lệ 1:1.41379)
   ========================================================================== */

:root {
  /* Studio Dark Theme (Screen Preview UI) */
  --bg-studio: #12161b;
  --bg-studio-surface: #1a212b;
  --bg-studio-border: rgba(255, 255, 255, 0.12);
  
  /* Authentic Academic Poster Canvas Palette */
  --bg-canvas: #F5F1E8;
  --bg-card: #FFFDF8;
  --bg-card-subtle: #F9F6EE;
  --bg-card-alt: #F0EAE1;
  --bg-card-highlight: #FFFFFF;
  
  --text-main: #17242F;
  --text-muted: rgba(23, 36, 47, 0.82);
  --text-subtle: rgba(23, 36, 47, 0.62);
  
  /* Philosophical Entity Color Coding */
  --color-human: #C84B28;                /* Rust-Orange: Human living body & practice */
  --color-human-bg: rgba(200, 75, 40, 0.08);
  --color-human-border: rgba(200, 75, 40, 0.35);
  
  --color-ai: #246B94;                   /* Cyan-Blue: AI systems & functional models */
  --color-ai-bg: rgba(36, 107, 148, 0.08);
  --color-ai-border: rgba(36, 107, 148, 0.35);

  --color-break: #B52A2A;                /* Rupture Red: Decisive practical breakpoint */
  --color-break-bg: rgba(181, 42, 42, 0.08);
  --color-break-border: #B52A2A;

  --color-unestablished: #5B4A78;        /* Purple: Self-awareness & subjectivity limit */
  --color-unestablished-bg: rgba(91, 74, 120, 0.08);
  --color-unestablished-border: rgba(91, 74, 120, 0.32);
  
  --border-subtle: rgba(23, 36, 47, 0.13);
  --border-strong: rgba(23, 36, 47, 0.28);
  
  /* Typography */
  --font-family-body: 'Plus Jakarta Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-display: 'Space Grotesk', 'Plus Jakarta Sans', ui-sans-serif, sans-serif;
  
  /* Strict A0 Dimensions for 1180px width base (1180 x 1668.5px) */
  --poster-base-width: 1180px;
  --poster-base-height: 1668.5px;
  
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

html {
  font-family: var(--font-family-body);
  background-color: var(--bg-studio);
  color: var(--text-main);
  line-height: 1.34;
  font-size: 13.2px;
  -webkit-text-size-adjust: 100%;
}

body.studio-body {
  min-height: 100vh;
  background-color: var(--bg-studio);
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ==========================================================================
   PREVIEW STUDIO TOOLBAR (SCREEN ONLY)
   ========================================================================== */
.preview-toolbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background-color: rgba(18, 22, 27, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--bg-studio-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.toolbar-brand {
  display: flex;
  align-items: center;
}

.poster-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 4px 12px;
  border-radius: 20px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.badge-title {
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  font-family: var(--font-family-display);
}

.badge-dim {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.6875rem;
  font-weight: 600;
  padding-left: 6px;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.toolbar-zoom-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
  font-family: var(--font-family-body);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.tool-btn:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

.zoom-stepper {
  display: flex;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  padding: 2px;
}

.tool-btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: transparent;
  border: none;
  color: #cbd5e1;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.15s ease;
}

.tool-btn-icon:hover {
  background-color: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.zoom-value-label {
  color: #ffffff;
  font-size: 0.8125rem;
  font-weight: 700;
  min-width: 42px;
  text-align: center;
  font-variant-numeric: tabular-nums;
  padding: 0 4px;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-btn-secondary {
  background-color: rgba(255, 255, 255, 0.06);
  color: #cbd5e1;
}

.tool-btn-primary {
  background: linear-gradient(135deg, #C84B28, #E05C35);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(200, 75, 40, 0.4);
}

.tool-btn-primary:hover {
  background: linear-gradient(135deg, #b8401f, #d6502a);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(200, 75, 40, 0.5);
}

/* Toast Notification */
.export-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: #1e2632;
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-left: 4px solid #C84B28;
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  max-width: 400px;
  animation: toastSlideIn 0.25s ease-out;
}

.export-toast.toast-success { border-left-color: #10b981; }
.export-toast.toast-error { border-left-color: #ef4444; }

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.toast-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: #C84B28;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

.toast-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toast-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: #ffffff;
}

.toast-desc {
  font-size: 0.75rem;
  color: #94a3b8;
  line-height: 1.3;
}

/* Print Guide Dialog */
.print-guide-dialog {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: none;
  border-radius: 12px;
  background: transparent;
  padding: 0;
  z-index: 2000;
  max-width: 560px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.print-guide-dialog::backdrop {
  background-color: rgba(10, 14, 20, 0.75);
  backdrop-filter: blur(4px);
}

.dialog-card {
  background-color: #1a222d;
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 8px;
}

.dialog-header h3 {
  font-size: 1.02rem;
  font-weight: 700;
  color: #ffffff;
  font-family: var(--font-family-display);
}

.dialog-close {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  font-size: 1.15rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}

.dialog-close:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.dialog-body {
  font-size: 0.8125rem;
  line-height: 1.45;
}

.guide-intro {
  margin-bottom: 8px;
  color: #cbd5e1;
}

.guide-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.guide-steps li {
  background-color: rgba(255, 255, 255, 0.04);
  border-left: 3px solid #C84B28;
  padding: 5px 8px;
  border-radius: 0 4px 4px 0;
  color: #e2e8f0;
}

.guide-steps code {
  background-color: rgba(0, 0, 0, 0.35);
  color: #fca5a5;
  padding: 2px 4px;
  border-radius: 3px;
  font-size: 0.75rem;
}

.dialog-footer {
  display: flex;
  justify-content: flex-end;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 10px;
}

/* ==========================================================================
   POSTER WORKSPACE / VIEWPORT
   ========================================================================== */
.poster-workspace {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 16px 12px 40px 12px;
  overflow-x: auto;
  overflow-y: visible;
}

.poster-scaler-wrapper {
  transform-origin: top center;
  transition: transform 0.15s ease-out;
  display: flex;
  justify-content: center;
}

/* ==========================================================================
   AUTHENTIC A0 POSTER CANVAS (841mm x 1189mm Proportions: 1180px x 1668.5px)
   ========================================================================== */
.poster-container {
  width: var(--poster-base-width);
  height: var(--poster-base-height);
  min-height: var(--poster-base-height);
  max-height: var(--poster-base-height);
  background-color: var(--bg-canvas);
  color: var(--text-main);
  border: 1px solid var(--border-strong);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.45), 0 2px 10px rgba(0, 0, 0, 0.2);
  padding: 16px 20px 12px 20px;
  position: relative;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow: hidden;
}

/* Typography Defaults inside Poster */
h1, h2, h3, h4 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

p {
  margin-bottom: 0.2rem;
}

p:last-child {
  margin-bottom: 0;
}

cite.citation-tag {
  font-style: normal;
  font-weight: 800;
  color: var(--color-ai);
  font-size: 0.8125em;
  margin-left: 2px;
  white-space: nowrap;
}

/* ==========================================================================
   Header Section
   ========================================================================== */
.poster-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--text-main);
  padding-bottom: 4px;
  margin-bottom: 0;
  gap: 16px;
}

.rubric-badge {
  font-size: 0.70rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-main);
  font-family: var(--font-family-display);
}

.header-meta {
  text-align: right;
  font-size: 0.70rem;
}

.student-info p {
  margin-bottom: 0;
  line-height: 1.25;
  color: var(--text-muted);
}

.meta-label {
  font-weight: 600;
  color: var(--text-muted);
}

.meta-value {
  color: var(--text-main);
  font-weight: 800;
}

/* ==========================================================================
   HERO & CENTRAL THESIS SECTION (12-14%)
   ========================================================================== */
.hero-section {
  margin-top: 60px;
  margin-bottom: 8px;
}

.hero-titles {
  text-align: center;
  margin-bottom: 6px;
}

.poster-title {
  font-family: var(--font-family-display);
  font-size: 1.95rem;
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.title-main {
  color: var(--text-main);
}

.title-highlight {
  color: var(--color-human);
  text-decoration: underline;
  text-decoration-color: rgba(200, 75, 40, 0.45);
  text-underline-offset: 2.5px;
}

.poster-subtitle {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 1px;
}

.hero-thesis-container {
  display: grid;
  grid-template-columns: 1fr 2.15fr;
  gap: 8px;
  align-items: stretch;
}

.hero-hook-card {
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--color-ai);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hook-icon {
  color: var(--color-ai);
  flex-shrink: 0;
}

.hook-quote {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.32;
  font-style: italic;
}

.central-thesis-box {
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-strong);
  border-left: 4px solid var(--color-human);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  position: relative;
}

.thesis-label {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-human);
  font-family: var(--font-family-display);
  margin-bottom: 2px;
}

.central-thesis-text {
  font-size: 0.734375rem;
  line-height: 1.34;
  color: var(--text-main);
  text-align: justify;
}

.conceptual-scope-box {
  margin-top: 3px;
  padding: 2px 5px;
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--color-ai);
  border-radius: var(--radius-xs);
  font-size: 0.65625rem;
  line-height: 1.25;
  color: var(--text-main);
}

.scope-label {
  color: var(--color-ai);
  font-weight: 800;
  font-size: 0.625rem;
  font-family: var(--font-family-display);
}

/* ==========================================================================
   Section Headers Common
   ========================================================================== */
.section {
  margin-bottom: 8px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 4px;
}

.section-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background-color: var(--text-main);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 800;
  font-family: var(--font-family-display);
  border-radius: var(--radius-xs);
  flex-shrink: 0;
}

.section-title {
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-family-display);
  color: var(--text-main);
  white-space: nowrap;
}

.section-rule {
  flex: 1;
  height: 1.5px;
  background-color: var(--border-strong);
}

/* ==========================================================================
   TẦNG 1: NỀN TẢNG CỦA Ý THỨC (17-18%)
   ========================================================================== */
.foundation-triptych {
  display: grid;
  grid-template-columns: 1fr 1.12fr 1fr;
  gap: 6px;
  margin-bottom: 4px;
}

.source-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.natural-card { border-top: 3px solid var(--color-human); }
.definition-card { border-top: 3px solid var(--text-main); background-color: var(--bg-card-subtle); }
.social-card { border-top: 3px solid var(--color-ai); }

.card-head {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 3px;
}

.card-icon {
  color: var(--text-main);
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.spark-icon { color: var(--color-human); }

.card-title {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-family: var(--font-family-display);
}

.source-content {
  font-size: 0.6875rem;
  line-height: 1.3;
  color: var(--text-muted);
}

.source-p { margin-bottom: 2px; }
.source-p-sub { margin-bottom: 2px; }

.ai-distinction-note {
  background-color: var(--bg-card-alt);
  border-left: 2px solid var(--color-ai);
  padding: 2px 4px;
  border-radius: var(--radius-xs);
  font-size: 0.65625rem;
  line-height: 1.22;
  margin-top: 2px;
  color: var(--text-main);
}

.condition-badge {
  display: block;
  margin-top: 3px;
  padding: 2px 4px;
  border-radius: var(--radius-xs);
  font-size: 0.625rem;
  font-weight: 700;
  text-align: center;
}

.natural-badge {
  background-color: var(--color-human-bg);
  color: var(--color-human);
  border: 1px solid var(--color-human-border);
}

.social-badge {
  background-color: var(--color-ai-bg);
  color: var(--color-ai);
  border: 1px solid var(--color-ai-border);
}

.core-definition {
  font-size: 0.71875rem;
  font-weight: 600;
  line-height: 1.32;
  color: var(--text-main);
  font-style: italic;
  padding: 4px 6px;
  background-color: #ffffff;
  border-left: 3px solid var(--text-main);
  border-radius: var(--radius-xs);
  margin-bottom: 4px;
}

.distinction-banner {
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 4px 5px;
}

.distinction-text {
  font-size: 0.65625rem;
  color: var(--text-muted);
  margin-bottom: 2px;
  font-weight: 600;
}

.triad-formula {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2px;
}

.quad-flow .formula-item {
  font-size: 0.5625rem;
  padding: 1px 2px;
  line-height: 1.15;
}

.quad-flow .formula-op {
  font-size: 0.625rem;
  padding: 0 1px;
}

.formula-item {
  background-color: #ffffff;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xs);
  padding: 1px 3px;
  font-size: 0.59375rem;
  font-weight: 800;
  color: var(--text-main);
  text-align: center;
  flex: 1;
}

.formula-op {
  font-weight: 900;
  color: var(--color-human);
  font-size: 0.6875rem;
  flex-shrink: 0;
  padding: 0 1px;
}

.bullet-list-compact {
  list-style: none;
  margin-top: 2px;
}

.bullet-list-compact li {
  position: relative;
  padding-left: 8px;
  margin-bottom: 1px;
  font-size: 0.65625rem;
  line-height: 1.25;
}

.bullet-list-compact li::before {
  content: "▪";
  position: absolute;
  left: 0;
  color: var(--color-ai);
  font-size: 0.6875rem;
}

.convergence-footer {
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.convergence-connector {
  display: flex;
  align-items: center;
  gap: 3px;
  color: var(--color-human);
  font-size: 0.6875rem;
}

.synthesis-statement {
  font-size: 0.71875rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
}

/* ==========================================================================
   TẦNG 2: MA TRẬN NĂM BÌNH DIỆN ĐỐI CHIẾU (35-38%)
   ========================================================================== */
.matrix-column-headers {
  display: grid;
  grid-template-columns: 20px 1fr 180px 1fr 20px;
  gap: 6px;
  align-items: stretch;
  margin-bottom: 4px;
}

.matrix-col-header.col-human-header {
  grid-column: 2;
  background-color: var(--bg-card);
  border: 1px solid var(--color-human-border);
  border-top: 3px solid var(--color-human);
  border-radius: var(--radius-sm);
  padding: 4px 6px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.matrix-col-header.col-center-header {
  grid-column: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 2px 4px;
  text-align: center;
}

.matrix-axis-badge {
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-main);
  font-family: var(--font-family-display);
}

.matrix-col-header.col-ai-header {
  grid-column: 4;
  background-color: var(--bg-card);
  border: 1px solid var(--color-ai-border);
  border-top: 3px solid var(--color-ai);
  border-radius: var(--radius-sm);
  padding: 4px 6px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.col-header-badge {
  display: flex;
  align-items: center;
  gap: 4px;
}

.col-dot { font-size: 0.59375rem; }
.dot-human { color: var(--color-human); }
.dot-ai { color: var(--color-ai); }

.col-title {
  font-size: 0.65625rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-family: var(--font-family-display);
}

.badge-human-header .col-title { color: var(--color-human); }
.badge-ai-header .col-title { color: var(--color-ai); }

.col-summary {
  font-size: 0.625rem;
  line-height: 1.2;
  color: var(--text-muted);
}

/* 5 Connected Threshold Rows */
.thresholds-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 4px;
}

.threshold-row {
  display: grid;
  grid-template-columns: 20px 1fr 180px 1fr 20px;
  gap: 6px;
  align-items: center;
  position: relative;
}

/* Track Nodes & Stems */
.path-track {
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: center;
  position: relative;
}

.track-node {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: 800;
  z-index: 2;
}

.human-node {
  background-color: var(--color-human);
  color: #ffffff;
  box-shadow: 0 0 0 2px #ffffff;
}

.ai-node {
  background-color: var(--color-ai);
  color: #ffffff;
  box-shadow: 0 0 0 2px #ffffff;
}

.ai-rupture-node {
  background-color: var(--color-break);
  color: #ffffff;
  box-shadow: 0 0 0 2px #ffffff;
  font-size: 0.6875rem;
  font-weight: 900;
}

.ai-unestablished-endpoint {
  background-color: var(--color-unestablished);
  color: #ffffff;
  box-shadow: 0 0 0 2px #ffffff;
  font-size: 0.6875rem;
  font-weight: 900;
}

.track-stem {
  position: absolute;
  top: 0;
  bottom: -4px;
  width: 2px;
  z-index: 1;
}

.track-stem.solid { background-color: var(--color-human); }
.track-stem.solid-end { background-color: var(--color-human); bottom: 50%; }
.track-stem.solid-ai { background-color: var(--color-ai); }
.track-stem.towards-break { background: linear-gradient(to bottom, var(--color-ai), var(--color-break)); }
.track-stem.unestablished-void {
  background: repeating-linear-gradient(to bottom, var(--color-unestablished), var(--color-unestablished) 3px, transparent 3px, transparent 6px);
  bottom: 50%;
}

/* Threshold Cards */
.threshold-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 4px 7px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.human-side { border-left: 3px solid var(--color-human); }
.ai-side { border-left: 3px solid var(--color-ai); }

.card-human-highlight {
  border: 1.5px solid var(--color-human);
  border-left: 4px solid var(--color-human);
  background-color: #ffffff;
}

.card-break-zone {
  border: 1.5px solid var(--color-break);
  border-left: 4px solid var(--color-break);
  background-color: var(--color-break-bg);
}

.card-unestablished {
  border-left: 3px solid var(--color-unestablished);
  background-color: var(--bg-card-subtle);
}

.side-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.entity-tag {
  font-size: 0.59375rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: var(--font-family-display);
}

.tag-human { color: var(--color-human); }
.tag-ai { color: var(--color-ai); }

.status-badge {
  font-size: 0.5625rem;
  font-weight: 700;
  padding: 1px 3px;
  border-radius: var(--radius-xs);
}

.badge-full { background-color: var(--color-human-bg); color: var(--color-human); }
.badge-material { background-color: rgba(36, 107, 148, 0.1); color: var(--color-ai); }
.badge-partial { background-color: rgba(36, 107, 148, 0.12); color: var(--color-ai); }
.badge-derivative { background-color: rgba(36, 107, 148, 0.14); color: var(--color-ai); }
.badge-rupture { background-color: #B52A2A; color: #ffffff; font-weight: 800; }
.badge-unestablished { background-color: var(--color-unestablished-bg); color: var(--color-unestablished); }

.side-text {
  font-size: 0.671875rem;
  line-height: 1.26;
  color: var(--text-muted);
}

.side-text strong { color: var(--text-main); }

/* Central Dimension Arch & Micro-Conclusions */
.threshold-center-arch {
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 3px 5px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
}

.arch-critical {
  background-color: #ffffff;
  border: 1.5px solid var(--color-break);
  box-shadow: 0 2px 6px rgba(181, 42, 42, 0.12);
}

.arch-purple { border-color: var(--color-unestablished-border); }

.arch-badge {
  font-size: 0.53125rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-subtle);
  font-family: var(--font-family-display);
}

.arch-badge-highlight { color: var(--color-break); font-weight: 900; }
.arch-badge-purple { color: var(--color-unestablished); font-weight: 800; }

.arch-title {
  font-size: 0.71875rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-family: var(--font-family-display);
  color: var(--text-main);
  line-height: 1.12;
}

.arch-title-critical { color: var(--color-break); }
.arch-title-purple { color: var(--color-unestablished); }

.arch-connector-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  width: 100%;
  color: var(--text-subtle);
  font-size: 0.53125rem;
  margin: 0;
}

.conn-line {
  height: 1px;
  flex: 1;
  background-color: var(--border-strong);
}

.conn-line-break {
  font-size: 0.59375rem;
  font-weight: 900;
  color: var(--color-break);
  padding: 0 1px;
}

.conn-line-purple {
  font-size: 0.59375rem;
  font-weight: 900;
  color: var(--color-unestablished);
  padding: 0 1px;
}

.critical-connector { color: var(--color-break); }
.purple-connector { color: var(--color-unestablished); }

.micro-conclusion-pill {
  font-size: 0.5625rem;
  font-weight: 700;
  color: var(--text-main);
  background-color: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 1px 3px;
  line-height: 1.15;
  text-align: center;
  width: 100%;
}

.pill-critical {
  background-color: var(--color-break);
  color: #ffffff;
  border-color: var(--color-break);
  font-weight: 800;
}

.pill-purple {
  background-color: var(--color-unestablished-bg);
  color: var(--color-unestablished);
  border-color: var(--color-unestablished-border);
  font-weight: 800;
}

/* Verdict banner bottom of Tier 2 */
.infographic-verdict-banner {
  background: linear-gradient(135deg, #17242F, #233444);
  color: #ffffff;
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  text-align: center;
}

.banner-statement {
  font-size: 0.71875rem;
  line-height: 1.28;
  color: #f1f5f9;
}

.banner-statement strong { color: #fca5a5; }

/* ==========================================================================
   TẦNG 3: BA PHÂN BIỆT, QUAN HỆ SẢN XUẤT & ĐỐI THOẠI KHOA HỌC (15-17%)
   ========================================================================== */
.tier-3-wrapper {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

/* A. Ba phân biệt cần giữ (Visual Equation Cards) */
.contradictions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}

.dialectic-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--text-main);
  border-radius: var(--radius-sm);
  padding: 4px 6px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.equation-badge-row {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 2px;
}

.equation-num {
  width: 14px;
  height: 14px;
  background-color: var(--text-main);
  color: #ffffff;
  font-size: 0.5625rem;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.equation-tag {
  font-size: 0.53125rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-subtle);
  font-family: var(--font-family-display);
}

.equation-formula-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xs);
  padding: 2px 4px;
  margin-bottom: 2px;
}

.eq-term {
  font-size: 0.65625rem;
  font-weight: 800;
  color: var(--text-main);
  font-family: var(--font-family-display);
  text-align: center;
}

.eq-neq {
  font-size: 0.78125rem;
  font-weight: 900;
  color: var(--color-break);
  flex-shrink: 0;
}

.equation-explanation {
  font-size: 0.625rem;
  line-height: 1.24;
  color: var(--text-muted);
}

/* B. AI trong quan hệ sản xuất (3 Questions Framework) */
.production-relations-block {
  width: 100%;
}

.production-card {
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-strong);
  border-left: 4px solid var(--color-human);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
}

.production-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 2px;
}

.prod-badge {
  font-size: 0.53125rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background-color: var(--color-human-bg);
  color: var(--color-human);
  border: 1px solid var(--color-human-border);
  padding: 1px 3px;
  border-radius: var(--radius-xs);
  font-family: var(--font-family-display);
}

.prod-title {
  font-size: 0.71875rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-family: var(--font-family-display);
  color: var(--text-main);
}

.prod-grid-layout {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 6px;
  align-items: center;
}

.prod-questions-col {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.prod-q-item {
  display: flex;
  align-items: flex-start;
  gap: 4px;
  font-size: 0.625rem;
  line-height: 1.2;
}

.q-icon {
  width: 12px;
  height: 12px;
  background-color: var(--color-human);
  color: #ffffff;
  font-size: 0.53125rem;
  font-weight: 900;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.q-text-wrap strong {
  color: var(--text-main);
  margin-right: 2px;
}

.q-text-wrap span {
  color: var(--text-muted);
}

.prod-verdict-col {
  height: 100%;
}

.prod-verdict-inner {
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--color-human);
  border-radius: var(--radius-xs);
  padding: 3px 5px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.prod-verdict-label {
  font-size: 0.53125rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-human);
  font-family: var(--font-family-display);
}

.prod-verdict-statement {
  font-size: 0.65625rem;
  line-height: 1.22;
  color: var(--text-main);
}

.prod-verdict-caveat {
  font-size: 0.5625rem;
  color: var(--text-subtle);
  font-style: italic;
}

/* C. Contemporary Science Literature (3 Equal Elevated Cards) */
.science-static-section {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
}

.science-section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--border-subtle);
}

.science-tag {
  font-size: 0.655rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ai);
  font-family: var(--font-family-display);
}

.science-cite-tag {
  font-size: 0.585rem;
  color: var(--text-subtle);
  font-style: italic;
}

.science-static-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}

.science-card-item {
  background-color: #ffffff;
  border: 1px solid var(--border-subtle);
  border-top: 2.5px solid var(--color-ai);
  border-radius: var(--radius-xs);
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 3px;
}

.science-author-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 2px;
}

.science-card-author {
  font-size: 0.725rem;
  font-weight: 800;
  color: var(--text-main);
  font-family: var(--font-family-display);
}

.science-card-desc {
  font-size: 0.655rem;
  line-height: 1.28;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.science-takeaway-box {
  background-color: var(--bg-card-alt);
  border-left: 2.5px solid var(--color-ai);
  padding: 4px 6px;
  border-radius: var(--radius-xs);
  font-size: 0.655rem;
  line-height: 1.26;
  color: var(--text-main);
}

.science-takeaway-box strong { color: var(--color-ai); }

/* ==========================================================================
   TẦNG 4: KẾT LUẬN BA TẦNG & TỔNG KẾT TRIẾT HỌC (15-17%)
   ========================================================================== */
.verdict-section-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.verdict-triptych {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
  margin-bottom: 1px;
}

.verdict-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 4px 6px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
}

.verdict-blue { border-top: 3.5px solid var(--color-ai); }
.verdict-terracotta { border-top: 3.5px solid var(--color-human); }
.verdict-slate { border-top: 3.5px solid var(--text-main); }

.verdict-tier-label {
  font-size: 0.53125rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 1px;
  font-family: var(--font-family-display);
}

.verdict-question {
  font-size: 0.671875rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 2px;
  line-height: 1.15;
}

.verdict-stamp {
  display: inline-block;
  padding: 2px 5px;
  font-size: 0.625rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  border-radius: var(--radius-xs);
  margin-bottom: 2px;
  font-family: var(--font-family-display);
  width: 100%;
}

.stamp-yes { background-color: var(--color-ai); color: #ffffff; }
.stamp-no { background-color: var(--color-human); color: #ffffff; }
.stamp-tool { background-color: var(--text-main); color: #ffffff; }

.verdict-subtext {
  font-size: 0.609375rem;
  line-height: 1.2;
  color: var(--text-muted);
}

.verdict-subtext strong { color: var(--text-main); }

/* Philosophical Summary & Open Question Box */
.main-verdict-summary {
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  display: grid;
  grid-template-columns: 2.15fr 1fr;
  gap: 8px;
  align-items: center;
}

.verdict-text-block {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.verdict-lead {
  font-size: 0.703125rem;
  color: var(--color-human);
  font-weight: 800;
  line-height: 1.24;
}

.verdict-core-statement {
  font-size: 0.65625rem;
  line-height: 1.28;
  color: var(--text-main);
  text-align: justify;
}

.verdict-open-question {
  background-color: var(--bg-card-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 4px 6px;
  display: flex;
  gap: 5px;
  align-items: center;
}

.open-q-glyph {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--color-human);
  font-family: var(--font-family-display);
  flex-shrink: 0;
}

.open-q-content {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.open-q-label {
  display: block;
  font-size: 0.53125rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-human);
  font-family: var(--font-family-display);
}

.open-q-text {
  font-size: 0.640625rem;
  font-weight: 700;
  line-height: 1.22;
  color: var(--text-main);
  font-style: italic;
}

/* ==========================================================================
   REFERENCES & FOOTER
   ========================================================================= */
.poster-footer {
  border-top: 1.5px solid var(--text-main);
  padding-top: 5px;
  margin-top: 42px;
}

.footer-title {
  font-size: 0.69rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 3px;
  text-transform: uppercase;
  font-family: var(--font-family-display);
}

.references-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 14px;
  list-style: none;
  margin-bottom: 4px;
}

.references-list li {
  display: flex;
  gap: 4px;
  line-height: 1.30;
  color: var(--text-muted);
  font-size: 0.655rem;
}

.ref-num {
  font-weight: 800;
  color: var(--color-ai);
  flex-shrink: 0;
}

.ref-text {
  flex: 1;
}

.references-list a {
  color: var(--color-ai);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: normal;
  overflow-wrap: break-word;
  hyphens: none;
}

.footer-colophon {
  border-top: 1px solid var(--border-subtle);
  padding-top: 3px;
  text-align: center;
  font-size: 0.5625rem;
  color: var(--text-subtle);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ==========================================================================
   PRINT / PDF EXPORT STYLESHEET (@media print)
   EXACT 100% IDENTICAL A0 PORTRAIT (841mm x 1189mm) - 1 PAGE VECTOR FIT
   ========================================================================== */
@page {
  size: 841mm 1189mm;
  margin: 0;
}

@media print {
  *, *::before, *::after {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    color-adjust: exact !important;
    box-shadow: none !important;
  }

  html, body {
    width: 841mm !important;
    height: 1189mm !important;
    margin: 0 !important;
    padding: 0 !important;
    background: #F5F1E8 !important;
    overflow: hidden !important;
    -webkit-print-color-adjust: exact !important;
  }

  /* Hide all preview studio UI elements */
  .preview-toolbar,
  .print-guide-dialog,
  .print-guide-dialog::backdrop,
  .export-toast {
    display: none !important;
  }

  .poster-workspace {
    margin: 0 !important;
    padding: 0 !important;
    background: transparent !important;
    overflow: visible !important;
    display: block !important;
    width: 841mm !important;
    height: 1189mm !important;
  }

  .poster-scaler-wrapper {
    transform: none !important;
    margin: 0 !important;
    padding: 0 !important;
    display: block !important;
    width: 841mm !important;
    height: 1189mm !important;
  }

  .poster-container {
    width: 841mm !important;
    height: 1189mm !important;
    min-height: 1189mm !important;
    max-height: 1189mm !important;
    margin: 0 !important;
    padding: 14mm 18mm 10mm 18mm !important;
    border: none !important;
    box-shadow: none !important;
    background-color: #F5F1E8 !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    page-break-after: avoid !important;
    break-after: avoid !important;
    font-size: 10pt !important;
  }

  .section,
  .threshold-row,
  .thresholds-container,
  .foundation-triptych,
  .contradictions-grid,
  .production-card,
  .science-static-section,
  .verdict-triptych,
  .main-verdict-summary,
  .poster-footer {
    page-break-inside: avoid !important;
    break-inside: avoid !important;
  }
}