/* ==========================================================================
   HUMAN CANVAS — Climax Masterclass Installation Stylesheet
   Aesthetic: Digital Art Exhibition, Deep Void, Kinetic Typography, Glassmorphism
   ========================================================================== */

:root {
  --bg-deep: #060608;
  --bg-card: rgba(14, 15, 20, 0.72);
  --bg-card-elevated: rgba(22, 24, 32, 0.88);

  --glass-border: rgba(255, 255, 255, 0.09);
  --glass-border-subtle: rgba(255, 255, 255, 0.05);
  --glass-border-active: rgba(255, 255, 255, 0.28);

  --text-primary: #f5f5f7;
  --text-secondary: #9a9aa2;
  --text-muted: #5e5e68;

  --accent-cyan: #38bdf8;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-amber: #f59e0b;
  --accent-purple: #c084fc;

  --font-display: 'Syne', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Space Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   P5.JS CANVAS CONTAINER & AMBIENT TEXTURE
   ========================================================================== */

.canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
}

.canvas-container canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.ambient-vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, transparent 40%, rgba(6, 6, 8, 0.75) 100%);
}

/* Glassmorphism Primitives */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.22), transparent);
  pointer-events: none;
}

.glass-pill {
  background: rgba(14, 15, 20, 0.75);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-full);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 40px;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-smooth);
}

.btn-primary {
  background: #f5f5f7;
  color: #060608;
  box-shadow: 0 0 40px rgba(255, 255, 255, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  background: #ffffff;
  box-shadow: 0 0 55px rgba(255, 255, 255, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-2px);
}

.btn-shine {
  position: absolute;
  top: 0; left: -100%;
  width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-20deg);
  animation: shineSweep 4.5s infinite;
}

@keyframes shineSweep {
  0%, 60% { left: -100%; }
  100% { left: 200%; }
}

kbd {
  display: inline-block;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  color: #fff;
}

.meta-dot {
  display: inline-block;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--text-muted);
}

/* ==========================================================================
   2. LANDING SCREEN
   ========================================================================== */

.screen {
  position: absolute;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 2;
  transition: opacity var(--transition-slow), transform var(--transition-slow), visibility var(--transition-slow);
}

body.state-landing #landingScreen {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

body.state-landing #artworkUI {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

body.state-main #landingScreen {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(0.97);
}

body.state-main #artworkUI {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.landing-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.landing-content {
  max-width: 940px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.landing-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: 0.22em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.landing-title {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 8vw, 7.2rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.title-glow {
  background: linear-gradient(180deg, #ffffff 30%, rgba(255, 255, 255, 0.45) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  text-shadow: 0 0 65px rgba(255, 255, 255, 0.25);
}

.landing-tagline {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.8vw, 2.3rem);
  font-weight: 600;
  color: #ffffff;
  letter-spacing: -0.01em;
}

.landing-subtext {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.4vw, 1.05rem);
  color: var(--accent-cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.landing-cta-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-top: 10px;
}

.privacy-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.landing-footer-hints {
  position: absolute;
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* ==========================================================================
   3. ARTWORK INTERFACE & HUDS
   ========================================================================== */

.artwork-ui {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.artwork-ui * {
  pointer-events: auto;
}

/* TOP-LEFT STATUS HUD [Toggle: D] */
.hud-top-left {
  position: fixed;
  top: 28px;
  left: 32px;
  z-index: 10;
  padding: 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 280px;
  transition: opacity var(--transition-smooth), transform var(--transition-smooth), visibility var(--transition-smooth);
}

.hud-top-left.is-hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  pointer-events: none;
}

.hud-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.hud-label {
  color: var(--text-muted);
  letter-spacing: 0.14em;
  font-weight: 700;
}

.hud-value {
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hud-value.highlight-val {
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.82rem;
}

/* TOP-RIGHT INFLUENCE TAGS */
.hud-top-right {
  position: fixed;
  top: 28px;
  right: 32px;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 10px;
}

.influence-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  background: rgba(14, 15, 20, 0.75);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  transition: opacity var(--transition-fast), border-color var(--transition-fast);
}

.influence-badge.disabled {
  opacity: 0.4;
  border-color: rgba(255, 255, 255, 0.03);
}

.influence-badge .badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
}

.influence-badge.disabled .badge-dot {
  background: var(--text-muted);
}

/* CINEMATIC MODE TRANSITION OVERLAY */
.transition-overlay {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.96);
  z-index: 25;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s;
}

.transition-overlay.is-active {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.transition-card {
  padding: 36px 54px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  box-shadow: 0 0 100px rgba(0, 0, 0, 0.85);
  border: 1px solid var(--glass-border-active);
}

.transition-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: var(--text-secondary);
}

.transition-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
  line-height: 1;
}

.transition-pct {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* UNSURE STATE NOTICE (<70%) */
.unsure-badge {
  position: fixed;
  top: 86px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  padding: 7px 18px;
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.unsure-badge.is-visible {
  opacity: 1;
  visibility: visible;
}

.unsure-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-amber);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* BOTTOM-RIGHT WEBCAM FEED PANEL [Toggle: C] */
.camera-panel {
  position: fixed;
  bottom: 96px;
  right: 32px;
  z-index: 10;
  width: 270px;
  padding: 12px;
  border-radius: var(--radius-md);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth), visibility var(--transition-smooth);
}

.camera-panel.is-hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  pointer-events: none;
}

.camera-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.cam-indicator {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.12em;
}

.cam-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
}

.cam-controls {
  display: flex;
  align-items: center;
  gap: 5px;
}

.cam-hud-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-sm);
  padding: 3px 8px;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
}

.cam-hud-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.cam-hud-btn.active {
  background: rgba(56, 189, 248, 0.2);
  border-color: rgba(56, 189, 248, 0.4);
  color: var(--accent-cyan);
}

.camera-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #000;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

#webcamVideo {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
  display: block;
}

.skeleton-canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  transform: scaleX(-1);
  pointer-events: none;
}

/* PROJECTOR HUD DOCK */
.projector-hud {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  padding: 6px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.hud-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.hud-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--glass-border);
  color: #fff;
}

.hud-btn.highlight-btn {
  color: var(--accent-cyan);
  border-color: rgba(56, 189, 248, 0.25);
}

.hud-btn.highlight-btn:hover {
  background: rgba(56, 189, 248, 0.15);
  color: #fff;
}

/* ==========================================================================
   4. SPECIAL PRESENTATION FEATURE: EXPLAIN MODE [X]
   ========================================================================== */

.explain-mode-view {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(6, 6, 8, 0.94);
  backdrop-filter: blur(35px);
  -webkit-backdrop-filter: blur(35px);
  padding: 32px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-smooth), visibility var(--transition-smooth);
}

.explain-mode-view.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

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

.explain-title-block h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.explain-columns {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

.explain-col {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.col-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.col-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--accent-cyan);
  font-weight: 700;
}

.col-header h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.col-header p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.col-content {
  flex: 1;
  min-height: 0;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000;
  border: 1px solid var(--glass-border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.explain-video-wrapper {
  width: 100%; height: 100%;
}

#explainVideoClone {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}

/* Column 2: Interpretation Box */
.interpret-container {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 14px;
  background: rgba(14, 15, 20, 0.9);
}

.interpret-landmarks-box {
  flex: 1.2;
  position: relative;
  background: #000;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

#explainSkeletonCanvas {
  width: 100%; height: 100%;
  transform: scaleX(-1);
}

.interpret-probs-box {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.interpret-subhead {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
}

.explain-probs-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.explain-prob-row {
  display: grid;
  grid-template-columns: 80px 1fr 45px;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.explain-prob-name {
  color: var(--text-secondary);
  font-weight: 600;
}

.explain-prob-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.explain-prob-fill {
  height: 100%;
  background: var(--accent-cyan);
  width: 0%;
  transition: width 0.15s ease-out;
}

.explain-prob-pct {
  color: #fff;
  text-align: right;
  font-weight: 700;
}

/* Column 3: Expression */
.expression-feed-box {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

.col-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   5. PRESENTER EMERGENCY PANEL [P]
   ========================================================================= */

.presenter-panel {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 60;
  max-width: 580px;
  width: 100%;
  padding: 32px;
  border: 1px solid var(--accent-amber);
  box-shadow: 0 0 80px rgba(0, 0, 0, 0.9);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.presenter-panel.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.presenter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.presenter-title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--accent-amber);
}

.warning-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-amber);
}

.presenter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 16px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-sm);
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.p-diag-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.p-diag-row span { color: var(--text-muted); }
.status-ok { color: var(--accent-emerald); }

.presenter-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.p-action-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--text-secondary);
}

.p-btn-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.p-btn {
  padding: 10px 14px;
  font-size: 0.75rem;
}

/* ==========================================================================
   6. TEACHING OVERLAY MODAL [H]
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(6, 6, 8, 0.88);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 36px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-smooth), visibility var(--transition-smooth);
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-card {
  max-width: 980px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 44px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  transform: translateY(20px) scale(0.98);
  transition: transform var(--transition-smooth);
}

.modal-backdrop.is-open .modal-card {
  transform: translateY(0) scale(1);
}

.modal-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-close-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover { background: rgba(255, 255, 255, 0.15); color: #fff; }

.teaching-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.body-flow-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-md);
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.step-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--accent-cyan);
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.step-sub {
  font-size: 0.74rem;
  color: var(--text-muted);
}

.flow-arrow {
  font-size: 1.4rem;
  color: var(--text-muted);
}

.triad-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.triad-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.triad-card.highlight {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.18);
}

.triad-header {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.triad-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--text-secondary);
}

.triad-header h4 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
}

.triad-tech {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
}

.triad-quote {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
}

.triad-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.synthesis-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: #ffffff;
}

.arrow-sym { color: var(--accent-cyan); }

.modal-footer-bar {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   7. RESPONSIVE DESIGN (1920x1080, 1600x900, 1366x768)
   ========================================================================== */

@media (max-width: 1200px) {
  .explain-columns {
    grid-template-columns: 1fr;
    overflow-y: auto;
  }
  .triad-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .hud-top-left { width: 220px; }
  .camera-panel { width: 210px; bottom: 84px; right: 20px; }
}