:root {
  --bg-dark: #07090e;
  --panel-bg: rgba(14, 18, 28, 0.90);
  --border-glow: rgba(96, 165, 250, 0.35);
  --accent: #38bdf8;
  --accent-strong: #0284c7;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-display: 'Outfit', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

body, html {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-dark);
  font-family: var(--font-sans);
  color: var(--text-main);
}

#webgl-container {
  position: fixed;
  inset: 0;
  z-index: 1;
}

/* ==========================================================================
   TOP APPLICATION NAVIGATION BAR (SUITE SWITCHER)
   ========================================================================== */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 18px;
  background: rgba(8, 13, 26, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(56, 189, 248, 0.22);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.55);
  gap: 14px;
  flex-wrap: wrap;
}

/* ==========================================================================
   NOTESKART PORTAL & FORWARD/BACKWARD NAVIGATION
   ========================================================================== */
.nk-nav-portal {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-nk-portal {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.22) 0%, rgba(56, 189, 248, 0.15) 100%);
  border: 1px solid rgba(99, 102, 241, 0.45);
  color: #e0e7ff;
  padding: 6px 12px;
  border-radius: 8px;
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-decoration: none;
  transition: all 0.22s ease;
  white-space: nowrap;
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.15);
}

.btn-nk-portal:hover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.35) 0%, rgba(56, 189, 248, 0.28) 100%);
  border-color: #38bdf8;
  color: #ffffff;
  transform: translateX(-2px);
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.35);
}

.nk-portal-arrow {
  font-size: 0.95rem;
  transition: transform 0.2s ease;
}

.btn-nk-portal:hover .nk-portal-arrow {
  transform: translateX(-3px);
}

.nk-portal-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 8px #38bdf8;
}

.nk-history-btns {
  display: flex;
  align-items: center;
  gap: 3px;
  background: rgba(15, 23, 42, 0.6);
  padding: 2px;
  border-radius: 7px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-nk-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: transparent;
  border: none;
  border-radius: 5px;
  color: #94a3b8;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
}

.btn-nk-step:hover {
  background: rgba(56, 189, 248, 0.18);
  color: #38bdf8;
  transform: scale(1.08);
}

.btn-nk-step:active {
  transform: scale(0.95);
}

.btn-nk-sublink {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #cbd5e1;
  padding: 6px 10px;
  border-radius: 8px;
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: 0.76rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-nk-sublink:hover {
  background: rgba(56, 189, 248, 0.14);
  border-color: rgba(56, 189, 248, 0.4);
  color: #ffffff;
}

.nk-portal-sep {
  width: 1px;
  height: 22px;
  background: rgba(255, 255, 255, 0.12);
  margin: 0 4px;
}

/* Noteskart Hub Dropdown Menu */
.nk-dropdown-wrap {
  position: relative;
  display: inline-block;
}

.btn-nk-hub {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #bae6fd;
  padding: 6px 12px;
  border-radius: 8px;
  font-family: var(--font-sans, 'Inter', sans-serif);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-nk-hub:hover {
  background: rgba(56, 189, 248, 0.18);
  border-color: #38bdf8;
  color: #ffffff;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.25);
}

.hub-caret {
  transition: transform 0.2s ease;
}

.nk-dropdown-wrap.open .hub-caret {
  transform: rotate(180deg);
}

.nk-hub-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 280px;
  background: rgba(10, 15, 30, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 12px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6), 0 0 25px rgba(56, 189, 248, 0.15);
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 4px;
  z-index: 1000;
  animation: hubMenuFadeIn 0.18s ease-out forwards;
}

.nk-dropdown-wrap.open .nk-hub-menu {
  display: flex;
}

@keyframes hubMenuFadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.nk-hub-header {
  padding: 8px 12px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 4px;
}

.nk-hub-header strong {
  display: block;
  color: #ffffff;
  font-size: 0.82rem;
  letter-spacing: 0.4px;
}

.nk-hub-header small {
  color: #94a3b8;
  font-size: 0.7rem;
}

.nk-hub-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  color: #e2e8f0;
  text-decoration: none;
  transition: all 0.15s ease;
}

.nk-hub-item:hover {
  background: rgba(56, 189, 248, 0.14);
  color: #ffffff;
  transform: translateX(3px);
}

.hub-item-icon {
  font-size: 1rem;
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}

.hub-item-text {
  display: flex;
  flex-direction: column;
}

.hub-item-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: #f1f5f9;
}

.hub-item-text small {
  font-size: 0.68rem;
  color: #94a3b8;
}

@media (max-width: 640px) {
  .nk-portal-title { display: none; }
  .btn-nk-sublink span { display: none; }
  .btn-nk-hub span { display: none; }
  .nk-hub-menu { right: -40px; width: 260px; }
}

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

.brand-logo {
  position: relative;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, #38bdf8, #2563eb);
  box-shadow: 0 0 14px #38bdf8;
}

.brand-rings {
  position: absolute;
  inset: 0;
  border: 1.5px dashed rgba(56, 189, 248, 0.5);
  border-radius: 50%;
  animation: spinRing 12s linear infinite;
}

@keyframes spinRing {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 6px;
  color: #f1f5f9;
}

.brand-text strong span { color: #38bdf8; }

.version-tag {
  font-size: 0.65rem;
  font-weight: 800;
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.brand-text small {
  display: block;
  font-size: 0.72rem;
  color: #94a3b8;
  font-weight: 500;
}

/* 7 Application Tab Buttons */
.app-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  padding: 2px 4px;
  scrollbar-width: none;
}
.app-tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
  color: #94a3b8;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 0.80rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  background: rgba(56, 189, 248, 0.1);
  color: #f1f5f9;
  border-color: rgba(56, 189, 248, 0.3);
}

.tab-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  color: #cbd5e1;
}

.tab-btn.active.tab-cnn-active {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.28) 0%, rgba(56, 189, 248, 0.22) 100%);
  border-color: #a855f7;
  color: #ffffff;
  box-shadow: 0 0 18px rgba(168, 85, 247, 0.45);
}

.tab-btn.active.tab-cnn-active .tab-num {
  background: rgba(168, 85, 247, 0.35);
  color: #f3e8ff;
}

.top-utils {
  display: flex;
  align-items: center;
  gap: 8px;
}

.telemetry-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.76rem;
  color: #94a3b8;
}

.telemetry-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 8px #34d399;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.telemetry-pill strong {
  color: #38bdf8;
}

.score-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  color: #94a3b8;
}

.score-pill strong {
  color: #f1f5f9;
}

/* ==========================================================================
   SECONDARY TOOLBAR: CAMERA PRESETS & SAMPLE DIGITS
   ========================================================================== */
.cnn-subbar {
  position: fixed;
  top: 56px;
  left: 18px;
  right: 18px;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--panel-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  padding: 6px 14px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
  flex-wrap: wrap;
}

.subbar-brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.subbar-badge {
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
}

.subbar-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #f1f5f9;
}

.subbar-title small {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.toolbar-section {
  display: flex;
  align-items: center;
  gap: 6px;
}

.toolbar-label {
  font-size: 0.70rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  white-space: nowrap;
}

.camera-presets-top {
  display: flex;
  gap: 4px;
  align-items: center;
}

.btn-top-cam {
  background: rgba(15, 23, 42, 0.85);
  color: #cbd5e1;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  padding: 5px 9px;
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-top-cam:hover {
  background: rgba(56, 189, 248, 0.22);
  color: #ffffff;
  border-color: rgba(56, 189, 248, 0.5);
  transform: translateY(-1px);
}

.btn-top-cam.active {
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  color: #ffffff;
  border-color: #38bdf8;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}

.btn-top-cam.orbit-active {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #ffffff;
  border-color: #34d399;
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.5);
}

.digit-presets-bar {
  display: flex;
  gap: 3px;
  align-items: center;
}

.btn-preset-digit {
  width: 25px;
  height: 25px;
  border-radius: 5px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #38bdf8;
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-preset-digit:hover {
  background: #38bdf8;
  color: #020617;
  transform: translateY(-1px);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
}

.btn-preset-digit:active {
  transform: scale(0.92);
}

/* ==========================================================================
   RIGHT SOFTMAX CONFIDENCE HUD
   ========================================================================== */
.confidence-hud {
  position: fixed;
  top: 112px;
  right: 18px;
  width: 215px;
  background: var(--panel-bg);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 14px;
  z-index: 10;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.confidence-hud h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.prob-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 0.8rem;
  transition: all 0.2s ease;
}

.prob-label {
  width: 14px;
  font-weight: 700;
  color: var(--text-main);
}

.prob-track {
  flex: 1;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}

.prob-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #0284c7, #38bdf8);
  transition: width 0.3s ease;
}

.prob-row.winner .prob-fill {
  background: linear-gradient(90deg, #10b981, #34d399);
  box-shadow: 0 0 10px #34d399;
}

.prob-row.winner .prob-label {
  color: #34d399;
  font-size: 0.92rem;
}

.prob-val {
  width: 40px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

/* ==========================================================================
   INTERACTIVE TOUCH DRAWING KIOSK
   ========================================================================== */
.kiosk-panel {
  position: fixed;
  bottom: 20px;
  left: 20px;
  z-index: 10;
  display: flex;
  gap: 16px;
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  border: 2px solid var(--border-glow);
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.75);
}

.canvas-wrapper {
  position: relative;
  width: 220px;
  height: 220px;
  border: 2px solid rgba(255, 255, 255, 0.65);
  border-radius: 8px;
  background: #000000;
  overflow: hidden;
  touch-action: none;
}

#draw-canvas {
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}

.canvas-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.28);
  font-size: 0.9rem;
  font-weight: 500;
  pointer-events: none;
  transition: opacity 0.2s;
}

.kiosk-controls {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 195px;
}

.control-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.73rem;
  color: var(--text-muted);
}

#preview-28 {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: #000;
  image-rendering: pixelated;
  border-radius: 4px;
}

.btn-primary {
  background: #dbeafe;
  color: #0f172a;
  border: 2px solid #60a5fa;
  padding: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.35);
}

.btn-primary:hover {
  background: #eff6ff;
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 7px;
  border-radius: 6px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 0.73rem;
  color: var(--text-muted);
}

.kiosk-hint-note {
  font-size: 0.68rem;
  line-height: 1.3;
  color: #94a3b8;
  background: rgba(255, 255, 255, 0.04);
  padding: 6px 8px;
  border-radius: 6px;
  border-left: 2px solid var(--accent);
}

@media (max-width: 1024px) {
  .cnn-subbar {
    top: 60px;
  }
  .confidence-hud {
    top: 130px;
  }
}

@media (max-width: 768px) {
  .confidence-hud {
    display: none;
  }
  .kiosk-panel {
    left: 10px;
    right: 10px;
    bottom: 10px;
    justify-content: center;
  }
  .canvas-wrapper {
    width: 165px;
    height: 165px;
  }
}