:root {
  --ga-navy-deep: #030d1d;
  --ga-navy-panel: #08162d;
  --ga-navy-card: #0d2142;
  --ga-navy-input: #020710;
  --ga-border: rgba(255, 255, 255, 0.08);
  --ga-border-subtle: rgba(255, 255, 255, 0.04);
  --ga-border-gold: rgba(223, 155, 53, 0.45);
  --ga-gold: #df9b35;
  --ga-gold-hover: #c98526;
  --ga-gold-light: #f5b453;
  --ga-white: #ffffff;
  --ga-text-muted: #8ca3c3;
  --ga-green: #10b981;
  --ga-red: #f43f5e;
  --ga-blue: #3b82f6;
  
  --canvas-bg: #ffffff;
  --app-font: 'Lexend', -apple-system, BlinkMacSystemFont, sans-serif;
}

body.theme-opendyslexic {
  --app-font: 'OpenDyslexic', 'Lexend', sans-serif !important;
}
body.theme-app-dark {
  --ga-navy-deep: #01040a;
  --ga-navy-panel: #040914;
  --ga-navy-card: #081224;
  --ga-navy-input: #000206;
  --ga-border: rgba(255, 255, 255, 0.12);
  --canvas-bg: #e2e8f0;
}
body.theme-canvas-contrast {
  --canvas-bg: #091322 !important;
}

* { box-sizing: border-box; }
body { 
  font-family: var(--app-font);
  margin: 0; 
  padding: 0 0 24px 0; 
  background: var(--ga-navy-deep); 
  color: var(--ga-white); 
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

.top-bar { 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  margin-bottom: 16px; 
  background: var(--ga-white); 
  padding: 10px 20px; 
  border-bottom: 3px solid var(--ga-gold); 
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.25); 
}
.brand-container {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-logo {
  height: 40px;
  width: auto;
  display: block;
}
.brand-divider {
  width: 1px;
  height: 22px;
  background: #cbd5e1;
}
.brand-title {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: #04142d;
}
.brand-title span {
  color: var(--ga-gold);
}

.btn-ghost { 
  background: transparent; 
  color: #04142d; 
  border: 1.5px solid #04142d; 
  padding: 7px 15px; 
  border-radius: 8px; 
  font-size: 0.85rem; 
  cursor: pointer; 
  font-weight: 700;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-ghost:hover { 
  background: #04142d; 
  color: var(--ga-white); 
}

.app-wrapper {
  padding: 0 16px;
}

.card { 
  background: var(--ga-navy-panel); 
  padding: 28px; 
  border-radius: 12px; 
  max-width: 440px; 
  margin: 30px auto; 
  border: 1px solid var(--ga-border); 
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 12px 36px rgba(0, 0, 0, 0.45); 
}
h2, h3 { 
  margin-top: 0; 
  color: var(--ga-white); 
  font-weight: 700; 
  letter-spacing: -0.02em;
}
label { 
  font-size: 0.78rem; 
  font-weight: 600; 
  color: var(--ga-text-muted); 
  display: block; 
  margin-top: 14px; 
  margin-bottom: 6px; 
  letter-spacing: 0.02em;
}
input, select, textarea { 
  width: 100%; 
  padding: 10px 14px; 
  border-radius: 8px; 
  border: 1px solid var(--ga-border); 
  background: var(--ga-navy-input); 
  color: white; 
  font-size: 0.95rem; 
  font-family: inherit; 
  transition: border-color 0.15s ease;
}
input:focus, select:focus, textarea:focus { 
  outline: none; 
  border-color: var(--ga-gold); 
}

button { 
  font-family: inherit;
  padding: 8px 14px; 
  border-radius: 8px; 
  border: none; 
  font-weight: 600; 
  cursor: pointer; 
  font-size: 0.85rem; 
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
button:active {
  transform: scale(0.98);
}
.btn-primary { 
  width: 100%; 
  background: var(--ga-gold); 
  color: #04142d; 
  margin-top: 16px; 
  padding: 11px; 
  font-weight: 700; 
  border: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover { background: var(--ga-gold-light); }
.btn-secondary { 
  background: var(--ga-navy-card); 
  color: var(--ga-white); 
  border: 1px solid var(--ga-border); 
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
.btn-secondary:hover { 
  background: #132b52; 
  border-color: var(--ga-border-gold); 
}
.btn-danger { 
  background: #be123c; 
  color: white; 
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.btn-danger:hover { background: #9f1239; }
.btn-gold { 
  background: var(--ga-gold); 
  color: #04142d; 
  font-weight: 700; 
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-gold:hover { background: var(--ga-gold-light); }

kbd {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--ga-border);
  color: var(--ga-text-muted);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 0.7rem;
  font-family: inherit;
  font-weight: 700;
  margin-left: 2px;
}

#student-draw-view { 
  display: none; 
  position: relative; 
  width: 100%; 
  max-width: 1200px; 
  margin: 0 auto; 
  height: calc(100vh - 84px); 
  flex-direction: column;
}

#student-whiteboard-stage {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.45s ease;
  z-index: 5;
}

#student-code-view {
  position: absolute;
  top: 0;
  left: 100%;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--ga-navy-panel);
  border-radius: 12px;
  border: 1px solid var(--ga-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 8px 30px rgba(0, 0, 0, 0.4);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.45s ease;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
}

#student-draw-view.mode-code #student-whiteboard-stage {
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
}

#student-draw-view.mode-code #student-code-view {
  transform: translateX(-100%);
  opacity: 1;
  pointer-events: auto;
}

.board-header { 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  margin-bottom: 8px; 
  flex-shrink: 0;
  z-index: 20;
}

.student-stage-viewport {
  position: relative;
  flex: 1;
  width: 100%;
  overflow: hidden;
  border-radius: 12px;
}

.code-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--ga-navy-panel);
  border-bottom: 1px solid var(--ga-border);
  flex-shrink: 0;
  gap: 12px;
}

.tool-bar { 
  display: flex; 
  gap: 6px; 
  align-items: center; 
  background: var(--ga-navy-panel); 
  padding: 7px 12px; 
  border-radius: 10px; 
  margin-bottom: 8px; 
  border: 1px solid var(--ga-border); 
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  flex-wrap: wrap; 
  flex-shrink: 0;
}
.color-dot { 
  width: 24px; 
  height: 24px; 
  border-radius: 50%; 
  cursor: pointer; 
  border: 2px solid transparent; 
  transition: transform 0.1s; 
  flex-shrink: 0; 
}
.color-dot.active { 
  border-color: white; 
  transform: scale(1.15); 
  box-shadow: 0 0 0 2px var(--ga-gold); 
}

.color-picker-wrapper {
  position: relative;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--ga-border);
  background: conic-gradient(red, yellow, lime, aqua, blue, magenta, red);
  flex-shrink: 0;
}
.color-picker-wrapper input[type="color"] {
  position: absolute;
  top: -10px;
  left: -10px;
  width: 50px;
  height: 50px;
  opacity: 0;
  cursor: pointer;
}

.tool-btn { 
  background: var(--ga-navy-card); 
  color: var(--ga-white); 
  padding: 6px 11px; 
  border-radius: 7px; 
  font-size: 0.8rem; 
  border: 1px solid var(--ga-border); 
}
.tool-btn.active { 
  background: var(--ga-gold); 
  color: #04142d; 
  font-weight: 700; 
  border-color: var(--ga-gold); 
}
.tool-btn i, .tool-btn svg {
  width: 15px;
  height: 15px;
}

.stroke-slider-container {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ga-navy-card);
  padding: 4px 8px;
  border-radius: 7px;
  border: 1px solid var(--ga-border);
}
.stroke-slider-container input[type="range"] {
  width: 75px;
  height: 5px;
  accent-color: var(--ga-gold);
  cursor: pointer;
  padding: 0;
  margin: 0;
}

.mode-tab-group {
  display: flex;
  background: var(--ga-navy-deep);
  padding: 2px;
  border-radius: 7px;
  border: 1px solid var(--ga-border);
  margin-right: 4px;
}
.mode-tab-btn {
  background: transparent;
  border: none;
  color: var(--ga-text-muted);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 5px;
  font-weight: 700;
  cursor: pointer;
}
.mode-tab-btn.active {
  background: var(--ga-navy-card);
  color: var(--ga-gold);
}

.canvas-container { 
  position: relative; 
  flex: 1; 
  width: 100%; 
  min-height: 400px; 
  border-radius: 12px; 
  overflow: hidden; 
  background: var(--canvas-bg); 
  border: 1px solid var(--ga-border); 
  transition: background 0.2s ease;
}
canvas { 
  width: 100%; 
  height: 100%; 
  touch-action: none; 
  display: block; 
  cursor: crosshair; 
}

#board-markup {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 6;
}

.lock-overlay { 
  position: absolute; 
  inset: 0; 
  background: rgba(3, 13, 29, 0.95); 
  display: none; 
  flex-direction: column; 
  align-items: center; 
  justify-content: center; 
  z-index: 10; 
  color: white; 
  text-align: center; 
}
.timer-pill { 
  background: var(--ga-gold); 
  color: #04142d; 
  padding: 4px 12px; 
  border-radius: 16px; 
  font-weight: 700; 
  font-size: 0.8rem; 
  display: none; 
  letter-spacing: 0.02em;
}
.points-pill { 
  background: #1e3a8a; 
  color: var(--ga-gold); 
  border: 1px solid rgba(223, 155, 53, 0.4); 
  padding: 4px 10px; 
  border-radius: 16px; 
  font-weight: 800; 
  font-size: 0.8rem; 
}

.scaffold-bulk-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--ga-navy-panel);
  border: 1.5px solid var(--ga-gold);
  border-radius: 10px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.8);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 120;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.scaffold-bulk-bar.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.peer-review-overlay {
  position: absolute;
  inset: 0;
  background: rgba(3, 13, 29, 0.98); 
  display: none; 
  flex-direction: column; 
  z-index: 100; 
  padding: 16px; 
  overflow: hidden; 
  touch-action: auto !important; 
  pointer-events: auto !important; 
  user-select: auto !important; 
  -webkit-user-select: auto !important; 
}
.peer-review-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.peer-review-body {
  display: flex;
  gap: 16px;
  flex: 1;
  overflow: hidden;
}
.peer-board-panel {
  flex: 1.6;
  background: #ffffff;
  border: 1px solid var(--ga-gold);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.peer-board-panel img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}
.peer-feedback-panel {
  flex: 1;
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-border);
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: auto !important;
  touch-action: auto !important;
}
.peer-feedback-panel textarea {
  touch-action: auto !important;
  pointer-events: auto !important;
  user-select: text !important;
  -webkit-user-select: text !important;
  background: var(--ga-navy-input);
  color: #ffffff;
  border: 1px solid var(--ga-border);
  border-radius: 8px;
  padding: 12px;
  font-size: 0.95rem;
}
.peer-feedback-panel textarea:focus {
  outline: none;
  border-color: var(--ga-gold);
}

.feedback-notice-card {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--ga-navy-panel);
  border: 1.5px solid var(--ga-gold);
  border-radius: 10px;
  padding: 14px 18px;
  max-width: 380px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.75);
  z-index: 100 !important;
  display: none;
}

.hinge-student-overlay {
  position: absolute;
  inset: 0;
  background: rgba(3, 13, 29, 0.97);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 40;
  padding: 24px;
  text-align: center;
}
.hinge-question-box {
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-gold);
  border-radius: 10px;
  padding: 16px 24px;
  max-width: 800px;
  width: 100%;
  margin-bottom: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
.hinge-btn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  width: 100%;
  max-width: 720px;
}
.btn-hinge-choice {
  min-height: 80px;
  padding: 14px 18px;
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--ga-navy-card);
  border: 1px solid var(--ga-border);
  color: var(--ga-white);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  word-break: break-word;
}
.btn-hinge-choice:hover:not(:disabled) {
  border-color: var(--ga-gold);
  background: #14356f;
  transform: translateY(-2px);
}
.btn-hinge-choice.selected {
  background: var(--ga-gold) !important;
  color: #04142d !important;
  border-color: #ffffff !important;
  box-shadow: 0 0 20px rgba(223, 155, 53, 0.5);
  transform: scale(1.02);
}
.btn-hinge-choice:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.student-leaderboard-overlay {
  position: absolute;
  inset: 0;
  background: rgba(2, 7, 16, 0.96);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 45;
  padding: 20px;
}
.student-leaderboard-box {
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-gold);
  border-radius: 12px;
  max-width: 540px;
  width: 100%;
  padding: 22px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.8);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}

.showcase-overlay { 
  position: absolute; 
  inset: 0; 
  background: #020710; 
  display: none; 
  flex-direction: column; 
  align-items: center; 
  justify-content: center; 
  z-index: 25; 
  padding: 8px;
}
.showcase-header-bar {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 30;
  pointer-events: none;
}
.showcase-tag {
  background: var(--ga-gold);
  color: #04142d;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(0,0,0,0.4);
  pointer-events: auto;
}
.showcase-img-wrap {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid var(--ga-gold);
}
.showcase-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.text-modal-overlay { 
  position: absolute; 
  inset: 0; 
  background: rgba(3, 13, 29, 0.6); 
  display: none; 
  align-items: center; 
  justify-content: center; 
  z-index: 15; 
}
.text-modal-box {
  background: var(--ga-navy-panel);
  padding: 20px;
  border-radius: 10px;
  border: 1px solid var(--ga-gold);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  width: 90%;
  max-width: 360px;
}

#teacher-view { display: none; max-width: 1400px; margin: 0 auto; }
.teacher-nav { 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  border-bottom: 1px solid var(--ga-border); 
  padding-bottom: 14px; 
  margin-bottom: 14px; 
  flex-wrap: wrap; 
  gap: 12px; 
}
.room-badge { 
  background: var(--ga-gold); 
  color: #04142d; 
  padding: 6px 14px; 
  border-radius: 6px; 
  font-weight: 700; 
  letter-spacing: 0.02em;
}

.action-toolbar { 
  background: var(--ga-navy-panel); 
  border-radius: 10px; 
  padding: 8px 12px; 
  margin-bottom: 16px; 
  border: 1px solid var(--ga-border); 
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  display: flex; 
  align-items: center; 
  gap: 8px; 
  flex-wrap: wrap; 
}
.timer-input { 
  width: 74px; 
  padding: 6px 10px; 
  border-radius: 6px; 
  border: 1px solid var(--ga-border); 
  background: var(--ga-navy-input); 
  color: white; 
}

.dropdown-container {
  position: relative;
  display: inline-block;
}
.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-gold);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
  z-index: 60;
  min-width: max-content;
  padding: 6px;
  flex-direction: column;
  gap: 2px;
}
.dropdown-menu.show {
  display: flex;
}
.dropdown-item {
  background: transparent;
  color: var(--ga-white);
  border: none;
  text-align: left;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  white-space: nowrap;
}
.dropdown-item:hover {
  background: #14356f;
  color: var(--ga-gold);
}
.dropdown-item i, 
.dropdown-item svg {
  width: 16px;
  height: 16px;
  min-width: 16px;
  flex-shrink: 0;
  stroke-width: 1.75px;
}

.hinge-stats-panel {
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-gold);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
  display: none;
}
.stats-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.stats-bar-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}
.stat-col {
  background: var(--ga-navy-input);
  border: 1px solid var(--ga-border);
  border-radius: 8px;
  padding: 10px;
  text-align: center;
  position: relative;
}
.stat-col.correct-key {
  border: 1px solid var(--ga-green);
  background: rgba(16, 185, 129, 0.08);
}
.stat-col-letter {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ga-gold);
  word-break: break-word;
}
.stat-col-count {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 4px 0;
}
.stat-col-percent {
  font-size: 0.8rem;
  color: var(--ga-text-muted);
}
.stat-roster-list {
  font-size: 0.75rem;
  color: var(--ga-text-muted);
  margin-top: 6px;
  max-height: 80px;
  overflow-y: auto;
  text-align: left;
  line-height: 1.4;
}

.roster-panel { 
  background: var(--ga-navy-panel); 
  border-radius: 10px; 
  padding: 10px 14px; 
  margin-bottom: 16px; 
  border: 1px solid var(--ga-border); 
}
.roster-header { 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  font-size: 0.75rem; 
  font-weight: 700; 
  margin-bottom: 6px; 
  color: var(--ga-text-muted); 
  letter-spacing: 0.03em;
}
.roster-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.student-chip { 
  background: var(--ga-navy-input); 
  border: 1px solid var(--ga-border); 
  color: var(--ga-white); 
  padding: 4px 10px; 
  border-radius: 12px; 
  font-size: 0.75rem; 
  display: flex; 
  align-items: center; 
  gap: 6px; 
}
.status-dot { 
  width: 6px; 
  height: 6px; 
  border-radius: 50%; 
  background: var(--ga-green); 
  display: inline-block; 
}

.grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); 
  gap: 14px; 
}
.board-card { 
  background: var(--ga-navy-panel); 
  border-radius: 10px; 
  overflow: visible !important; 
  border: 1px solid var(--ga-border); 
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  display: flex; 
  flex-direction: column; 
  transition: border-color 0.15s ease, transform 0.15s ease; 
  position: relative;
  z-index: 1;
}
.board-card:has(.card-actions-dropdown-menu.show),
.board-card.menu-active {
  z-index: 1200 !important;
}
.board-card:hover { 
  border-color: var(--ga-border-gold); 
  transform: translateY(-1px);
}
.board-card.selected-for-scaffold {
  border: 2px solid var(--ga-gold) !important;
  box-shadow: 0 0 14px rgba(223, 155, 53, 0.35);
}
.board-meta {
  overflow: visible !important;
}

.scaffold-card-check {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 10;
  width: 20px;
  height: 20px;
  accent-color: var(--ga-gold);
  cursor: pointer;
}

.board-card img { 
  width: 100%; 
  height: 180px; 
  object-fit: contain; 
  background: #ffffff; 
  border-bottom: 1px solid var(--ga-border); 
  display: block; 
  cursor: zoom-in; 
}
.board-placeholder { 
  width: 100%; 
  height: 180px; 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  background: var(--ga-navy-input); 
  color: var(--ga-text-muted); 
  font-size: 0.85rem; 
  font-style: italic; 
  border-bottom: 1px solid var(--ga-border); 
  cursor: pointer; 
}
.board-meta { 
  padding: 8px 12px; 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  font-size: 0.85rem; 
  gap: 4px; 
  flex-wrap: wrap; 
}
.seat-tag { 
  font-weight: 700; 
  color: var(--ga-gold); 
  overflow: hidden; 
  text-overflow: ellipsis; 
  white-space: nowrap; 
  max-width: 90px; 
}

.meta-actions { display: flex; gap: 4px; flex-wrap: wrap; }
.btn-action-mini { 
  padding: 4px 8px; 
  border-radius: 6px; 
  font-size: 0.75rem; 
}
.btn-action-mini i, .btn-action-mini svg {
  width: 12px;
  height: 12px;
}

.spotlight-modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 7, 16, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 150;
  padding: 16px;
}
.spotlight-content {
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-gold);
  border-radius: 12px;
  width: 95vw;
  max-width: 1300px;
  height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 16px 50px rgba(0,0,0,0.8);
}
.spotlight-header {
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--ga-navy-card);
  border-bottom: 1px solid var(--ga-border);
}
.spotlight-body {
  background: #ffffff;
  flex: 1;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 8px;
}
.spotlight-body img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}
.spotlight-footer {
  padding: 10px 16px;
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  align-items: center;
  background: var(--ga-navy-card);
  border-top: 1px solid var(--ga-border);
  flex-wrap: wrap;
}

.markup-modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 7, 16, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 175;
  padding: 16px;
}
.markup-content {
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-gold);
  border-radius: 12px;
  width: 95vw;
  max-width: 1200px;
  height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 16px 50px rgba(0,0,0,0.85);
}
.markup-toolbar {
  background: var(--ga-navy-card);
  padding: 8px 14px;
  display: flex;
  gap: 8px;
  align-items: center;
  border-bottom: 1px solid var(--ga-border);
  flex-wrap: wrap;
}
.markup-canvas-wrap {
  flex: 1;
  background: #253347;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
#markup-underlay-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  background: #ffffff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
#markup-draw-canvas {
  position: absolute;
  cursor: crosshair;
  touch-action: none;
}
.stamp-chips-scroll {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  max-width: 520px;
  padding: 2px 0;
}
.stamp-pill {
  background: var(--ga-navy-input);
  border: 1px solid var(--ga-border);
  color: var(--ga-white);
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.12s ease;
  position: relative;
}
.stamp-pill:hover, .stamp-pill.active {
  background: var(--ga-gold);
  color: #04142d;
  border-color: var(--ga-gold);
}
.stamp-del-btn {
  display: none;
  background: rgba(0, 0, 0, 0.45);
  color: white;
  border-radius: 50%;
  width: 14px;
  height: 14px;
  font-size: 9px;
  align-items: center;
  justify-content: center;
  margin-left: 2px;
}
.stamp-pill:hover .stamp-del-btn {
  display: inline-flex;
}

.color-swatch-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s;
}
.color-swatch-btn:hover, .color-swatch-btn.active {
  transform: scale(1.15);
  border-color: white;
}

.template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px;
  max-height: 220px;
  overflow-y: auto;
  margin: 12px 0;
  background: var(--ga-navy-input);
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--ga-border);
}
.template-card {
  border: 1px solid var(--ga-border);
  border-radius: 8px;
  padding: 6px;
  cursor: pointer;
  background: var(--ga-navy-panel);
  text-align: center;
  transition: all 0.15s ease;
  position: relative;
}
.template-card:hover {
  border-color: var(--ga-gold);
  transform: translateY(-2px);
}
.template-card.active {
  border-color: var(--ga-gold) !important;
  background: #14356f;
}
.template-card img {
  width: 100%;
  height: 65px;
  object-fit: contain;
  background: #ffffff;
  border-radius: 4px;
  margin-bottom: 4px;
  display: block;
}
.template-card-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ga-white);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.template-card-actions {
  position: absolute;
  top: 2px;
  right: 2px;
  display: flex;
  gap: 2px;
}
.template-card-btn {
  background: rgba(2, 7, 16, 0.85);
  color: white;
  border-radius: 4px;
  width: 20px;
  height: 20px;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ga-border);
  cursor: pointer;
}
.template-card-btn.del { background: #be123c; }

.studio-modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 7, 16, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 180;
  padding: 12px;
}
.studio-box {
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-gold);
  border-radius: 12px;
  max-width: 980px;
  width: 100%;
  height: 92vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 16px 50px rgba(0,0,0,0.85);
  overflow: hidden;
}
.studio-header {
  padding: 10px 16px;
  background: var(--ga-navy-card);
  border-bottom: 1px solid var(--ga-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.studio-toolbar {
  padding: 8px 14px;
  background: var(--ga-navy-deep);
  border-bottom: 1px solid var(--ga-border);
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}
.studio-canvas-wrap {
  flex: 1;
  background: #cbd5e1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  padding: 12px;
}
#studio-canvas {
  background: #ffffff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  border-radius: 6px;
  cursor: crosshair;
}

.modal-overlay { 
  display: none; 
  position: fixed; 
  inset: 0; 
  background: rgba(2, 7, 16, 0.85); 
  align-items: center; 
  justify-content: center; 
  z-index: 100; 
}

.leaderboard-modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 7, 16, 0.9);
  display: none !important;
  align-items: center;
  justify-content: center;
  z-index: 160;
  padding: 20px;
}
.leaderboard-modal.active {
  display: flex !important;
}

.access-drawer {
  position: fixed;
  top: 0;
  right: -340px;
  width: 320px;
  height: 100vh;
  background: var(--ga-navy-panel);
  border-left: 1px solid var(--ga-border-gold);
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.7);
  z-index: 950;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: right 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}
.access-drawer.open {
  right: 0;
}
.access-toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--ga-border-subtle);
}
.switch-ui {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.switch-ui input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider-ui {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--ga-navy-card);
  border: 1px solid var(--ga-border);
  transition: .2s;
  border-radius: 24px;
}
.slider-ui:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--ga-text-muted);
  transition: .2s;
  border-radius: 50%;
}
input:checked + .slider-ui {
  background-color: var(--ga-gold);
}
input:checked + .slider-ui:before {
  transform: translateX(20px);
  background-color: #04142d;
}

#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast-pill {
  background: var(--ga-navy-card);
  border: 1px solid var(--ga-border);
  color: var(--ga-white);
  padding: 11px 18px;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.toast-pill.show {
  transform: translateY(0);
  opacity: 1;
}
.toast-pill.success { border-left: 4px solid var(--ga-green); }
.toast-pill.error { border-left: 4px solid var(--ga-red); }
.toast-pill.info { border-left: 4px solid var(--ga-gold); }

/* Dialog Confirmation Popup - Set above 9999 Crafter Modals */
#dialog-modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 7, 16, 0.85);
  z-index: 100000 !important;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.dialog-box {
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-border-gold);
  border-radius: 12px;
  max-width: 420px;
  width: 100%;
  padding: 22px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
}
.dialog-fields-wrap {
  margin: 14px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-actions-dropdown-container {
  position: relative;
  display: inline-block;
  overflow: visible !important;
  z-index: 1210;
}
.card-actions-dropdown-menu {
  display: none;
  position: absolute;
  bottom: calc(100% + 4px);
  right: 0;
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-border-gold);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.75);
  z-index: 1220 !important;
  min-width: 165px;
  padding: 4px;
  flex-direction: column;
  gap: 2px;
}
.card-actions-dropdown-menu.show {
  display: flex;
}
.card-dropdown-item {
  background: transparent;
  color: var(--ga-white);
  border: none;
  text-align: left;
  padding: 6px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
}
.card-dropdown-item:hover {
  background: #14356f;
  color: var(--ga-gold);
}
.card-dropdown-item.text-danger:hover {
  background: #be123c;
  color: #ffffff;
}
.card-dropdown-item i, .card-dropdown-item svg {
  width: 13px;
  height: 13px;
}

.card-dropdown-submenu-wrap {
  position: relative;
  width: 100%;
}

.card-dropdown-submenu-wrap:hover .card-dropdown-submenu {
  display: flex;
}

.card-dropdown-submenu {
  display: none;
  position: absolute;
  top: 0;
  left: calc(100% + 6px);
  right: auto;
  bottom: auto;
  background: var(--ga-navy-panel);
  border: 1px solid var(--ga-border-gold);
  border-radius: 8px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.85);
  min-width: 185px;
  padding: 4px;
  flex-direction: column;
  gap: 2px;
  z-index: 1230 !important; 
}

.acc-lock-tag {
  display: none;
  align-items: center;
  gap: 3px;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid var(--ga-red);
  color: #fecdd3;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
}
.acc-lock-tag.show {
  display: inline-flex;
}

#sen-magnifier-lens {
  position: fixed;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 3px solid var(--ga-gold);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), inset 0 0 16px rgba(0, 0, 0, 0.25);
  pointer-events: none;
  z-index: 9005;
  display: none;
  overflow: hidden;
  background-repeat: no-repeat;
  background-color: var(--canvas-bg);
}

.code-editor-viewport {
  position: relative;
  flex: 1;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #020710;
}

#code-highlight-pre,
#student-code-editor {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 16px;
  border: none;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.95rem;
  line-height: 1.55;
  tab-size: 4;
  -moz-tab-size: 4;
  white-space: pre;
  word-wrap: normal;
  overflow: auto;
  box-sizing: border-box;
}

#code-highlight-pre {
  pointer-events: none;
  background: transparent !important;
  z-index: 1;
}

#code-highlight-block {
  font-family: inherit !important;
  font-size: inherit !important;
  line-height: inherit !important;
  padding: 0 !important;
  background: transparent !important;
}

#student-code-editor {
  z-index: 2;
  background: transparent;
  color: transparent;
  caret-color: #38bdf8;
  resize: none;
  outline: none;
}

#student-code-console {
  background: #01040a;
  color: #34d399;
}

.code-blank-slot {
  display: inline-block;
  background: rgba(223, 155, 53, 0.3) !important;
  border: 1.5px dashed var(--ga-gold) !important;
  color: #fef08a !important;
  padding: 0 4px !important;
  margin: 0 !important;
  border-radius: 4px !important;
  font-family: inherit !important;
  font-size: inherit !important;
  line-height: inherit !important;
  font-weight: 700 !important;
  vertical-align: baseline;
  cursor: pointer;
  box-shadow: 0 0 6px rgba(223, 155, 53, 0.25);
  box-sizing: border-box;
}

.teacher-code-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #020710;
  overflow: hidden;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.72rem;
  padding: 8px;
  border-bottom: 1px solid var(--ga-border);
  height: 180px;
}

.teacher-code-card-body pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
  flex: 1;
  overflow-y: hidden;
  background: transparent !important;
  padding: 0 !important;
}

.teacher-code-card-body code {
  font-family: inherit !important;
  font-size: inherit !important;
  background: transparent !important;
}

.teacher-code-output-preview {
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
  color: #34d399;
  font-size: 0.68rem;
  max-height: 40px;
  overflow: hidden;
}

.board-card.eval-passed {
  border: 2px solid #10b981 !important;
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.4) !important;
}

.board-card.eval-failed {
  border: 2px solid #ef4444 !important;
  box-shadow: 0 0 16px rgba(239, 68, 68, 0.4) !important;
}

.board-card.eval-submitted {
  border: 2px solid var(--ga-gold) !important;
}

#student-code-editor[readonly] {
  cursor: default;
  caret-color: transparent !important;
}

#student-code-view:has(#student-code-editor[readonly]) .code-editor-viewport {
  box-shadow: inset 0 0 0 1px rgba(147, 51, 234, 0.4);
}

#student-binary-view {
  position: absolute;
  top: 0;
  left: 100%;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--ga-navy-panel);
  border-radius: 12px;
  border: 1px solid var(--ga-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 8px 30px rgba(0, 0, 0, 0.4);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.45s ease;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  overflow-y: auto;
}

#student-draw-view.mode-binary #student-whiteboard-stage {
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
}

#student-draw-view.mode-binary #student-binary-view {
  transform: translateX(-100%);
  opacity: 1;
  pointer-events: auto;
}

.binary-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--ga-navy-card);
  border-bottom: 1px solid var(--ga-border);
  flex-shrink: 0;
  gap: 12px;
}

.binary-rack-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 16px;
  gap: 28px;
}

.binary-prompt-card {
  background: var(--ga-navy-deep);
  border: 1.5px solid var(--ga-gold);
  border-radius: 10px;
  padding: 14px 28px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ga-gold-light);
  box-shadow: 0 0 24px rgba(223, 155, 53, 0.25);
  text-align: center;
  max-width: 800px;
  width: 100%;
}

.binary-bulbs-row {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  justify-content: center;
  flex-wrap: wrap;
  padding: 12px;
}

.bulb-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.bulb-unit:hover:not(.locked) {
  transform: translateY(-6px);
}

.bulb-unit.locked {
  cursor: not-allowed;
  opacity: 0.75;
}

.bulb-place-val {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--ga-text-muted);
  letter-spacing: 0.5px;
  transition: color 0.2s ease;
}

.bulb-svg-wrap {
  width: 64px;
  height: 94px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.6));
  transition: filter 0.3s ease;
}

.bulb-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.bulb-glass {
  fill: url(#bulb-glass-off);
  stroke: rgba(255, 255, 255, 0.15);
  stroke-width: 1.5;
  transition: fill 0.3s ease, stroke 0.3s ease;
}

.bulb-filament-path {
  stroke: #475569;
  stroke-width: 1.75;
  stroke-linecap: round;
  fill: none;
  transition: stroke 0.25s ease, filter 0.25s ease;
}

.bulb-base {
  fill: #334155;
  stroke: #1e293b;
  stroke-width: 1;
}

.bulb-unit.active .bulb-svg-wrap {
  filter: drop-shadow(0 0 20px rgba(245, 158, 11, 0.8)) drop-shadow(0 0 45px rgba(245, 158, 11, 0.45));
}

.bulb-unit.active .bulb-glass {
  fill: url(#bulb-glass-on);
  stroke: #fef08a;
}

.bulb-unit.active .bulb-filament-path {
  stroke: #ffffff;
  filter: drop-shadow(0 0 6px #f59e0b) drop-shadow(0 0 12px #fef08a);
}

.bulb-unit.active .bulb-place-val {
  color: var(--ga-gold-light);
  text-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
}

.bulb-bit-state {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--ga-text-muted);
  font-family: 'Courier New', Courier, monospace;
  transition: all 0.2s ease;
}

.bulb-unit.active .bulb-bit-state {
  color: #ffffff;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.8);
}

.nibble-separator {
  width: 2px;
  height: 110px;
  background: var(--ga-border-gold);
  margin: 0 10px;
  opacity: 0.6;
  border-radius: 2px;
}

#student-diagram-view {
  position: absolute;
  top: 0;
  left: 100%;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #020710;
  border-radius: 12px;
  border: 1px solid var(--ga-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 8px 30px rgba(0, 0, 0, 0.4);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.45s ease;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
}

#student-draw-view.mode-diagram #student-whiteboard-stage {
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
}

#student-draw-view.mode-diagram #student-diagram-view {
  transform: translateX(-100%);
  opacity: 1;
  pointer-events: auto;
}

.diagram-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--ga-navy-card);
  border-bottom: 1px solid var(--ga-border);
  flex-shrink: 0;
  gap: 12px;
}

.diagram-prompt-banner {
  padding: 8px 16px;
  background: var(--ga-navy-deep);
  border-bottom: 1px solid var(--ga-border-gold);
  color: var(--ga-gold-light);
  font-size: 0.88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.diagram-main-area {
  flex: 1;
  display: flex;
  min-height: 0;
  position: relative;
  overflow: hidden;
}

.diagram-palette-tray {
  width: 200px;
  background: var(--ga-navy-deep);
  border-right: 1px solid var(--ga-border);
  display: flex;
  flex-direction: column;
  padding: 12px;
  gap: 10px;
  overflow-y: auto;
  user-select: none;
  flex-shrink: 0;
}

.palette-title {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--ga-text-muted);
}

.palette-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.palette-item {
  background: var(--ga-navy-card);
  border: 1px solid var(--ga-border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ga-white);
  cursor: grab;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.15s ease;
}
.palette-item:hover {
  border-color: var(--ga-gold);
  background: #14356f;
  transform: translateX(3px);
}
.palette-item:active {
  cursor: grabbing;
}

.diagram-workspace {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: #020710;
}

.diagram-svg-stage {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.diagram-svg-stage foreignObject,
.diagram-svg-stage .wire-hitbox {
  pointer-events: auto !important;
}

.diag-nodes-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  pointer-events: none;
}

.diagram-node-card {
  position: absolute;
  cursor: move;
  user-select: none;
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.75));
  transition: filter 0.15s ease;
}

.diagram-node-card.selected {
  filter: drop-shadow(0 0 14px var(--ga-gold)) drop-shadow(0 0 4px #ffffff);
}

.node-vector-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
  display: block;
}

.node-label-wrap {
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(3, 13, 29, 0.85);
  border: 1px solid var(--ga-border);
  border-radius: 4px;
  padding: 2px 8px;
  white-space: nowrap;
  max-width: 140px;
}

.diagram-node-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ga-gold-light);
  outline: none;
  display: block;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
}

.node-del-bubble {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #ef4444;
  color: #fff;
  border: 1.5px solid #fff;
  font-size: 11px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.6);
  z-index: 20;
}
.node-del-bubble:hover {
  background: #dc2626;
  transform: scale(1.15);
}

.diag-port-pin {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #0f172a;
  border: 2px solid var(--ga-gold);
  transform: translate(-50%, -50%);
  cursor: crosshair;
  z-index: 10;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.diag-port-pin:hover {
  transform: translate(-50%, -50%) scale(1.45);
  background: var(--ga-gold);
  border-color: #ffffff;
  box-shadow: 0 0 8px var(--ga-gold);
}
.diag-port-pin.port-out {
  border-color: #38bdf8;
}

.wire-hitbox {
  stroke: transparent;
  stroke-width: 16px;
  fill: none;
  pointer-events: stroke;
  cursor: pointer;
}

.diagram-wire {
  stroke: var(--ga-gold);
  stroke-width: 2.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
  filter: drop-shadow(0 0 4px rgba(223, 155, 53, 0.4));
  transition: stroke 0.15s ease, stroke-width 0.15s ease;
}

/* Wired Ethernet Cable */
.diagram-wire.network {
  stroke: #38bdf8;
  stroke-width: 3;
}

/* Wireless / Wi-Fi Link (Forced high specificity) */
path.diagram-wire.wireless,
.diagram-wire.wireless {
  stroke: #f59e0b !important;
  stroke-width: 3px !important;
  stroke-dasharray: 8 6 !important;
  stroke-linecap: round !important;
  filter: drop-shadow(0 0 6px rgba(245, 158, 11, 0.75)) !important;
}

/* Special Wireless Wi-Fi Pin (Amber ring) */
.diag-port-pin.port-wireless {
  border-color: #f59e0b !important;
  background: #78350f !important;
}
.diag-port-pin.port-wireless:hover {
  background: #f59e0b !important;
  border-color: #ffffff !important;
  box-shadow: 0 0 10px #f59e0b !important;
}

.diagram-wire.logic {
  stroke: #818cf8;
  stroke-width: 2.5;
}

.diagram-wire.wire-selected {
  stroke: #ffffff !important;
  stroke-width: 4 !important;
  filter: drop-shadow(0 0 8px var(--ga-gold)) !important;
}

.diagram-wire.wire-draft {
  stroke-dasharray: 6, 6;
}

.node-internal-label-wrap {
  position: absolute;
  inset: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  text-align: center;
}

.node-internal-label-wrap .diagram-node-label {
  pointer-events: auto;
  font-size: 0.82rem;
  font-weight: 700;
  color: #ffffff;
  outline: none;
  max-width: 90%;
  word-break: break-word;
  line-height: 1.25;
}

.node-external-tag {
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(3, 13, 29, 0.9);
  border: 1px solid var(--ga-border);
  border-radius: 4px;
  padding: 2px 6px;
  white-space: nowrap;
}
.node-external-tag .diagram-node-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: #38bdf8;
  outline: none;
}

.node-resize-handle {
  position: absolute;
  bottom: -3px;
  right: -3px;
  width: 11px;
  height: 11px;
  background: var(--ga-gold);
  border: 1.5px solid #ffffff;
  border-radius: 2px;
  cursor: nwse-resize;
  z-index: 15;
}

.wire-label-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  pointer-events: auto !important;
}

.wire-label-input {
  background: #08162d;
  border: 1.5px solid var(--ga-gold);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  border-radius: 4px;
  padding: 2px 6px;
  text-align: center;
  width: 100%;
  outline: none;
  cursor: text !important;
  pointer-events: auto !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.7);
}

.wire-label-input:focus {
  border-color: #ffffff;
  background: #14356f;
}

.trace-table-scroll {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--ga-border);
  border-radius: 6px;
  background: var(--ga-navy-input);
  max-height: 240px;
}

.trace-grid-table {
  width: 100%;
  border-collapse: collapse;
}

.trace-grid-table th,
.trace-grid-table td {
  border: 1px solid var(--ga-border);
  padding: 0;
}

.trace-cell-th {
  width: 100%;
  background: #0d2142;
  border: none;
  color: var(--ga-gold);
  font-weight: 800;
  font-size: 0.78rem;
  padding: 6px;
  text-align: center;
  outline: none;
}

.trace-cell-td {
  width: 100%;
  background: transparent;
  border: none;
  color: #ffffff;
  font-family: monospace;
  font-size: 0.82rem;
  padding: 6px;
  text-align: center;
  outline: none;
}
.trace-cell-td:focus {
  background: rgba(223, 155, 53, 0.15);
}

.teacher-diagram-card-body {
  width: 100%;
  height: 180px;
  background: #020710 !important;
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.teacher-diagram-card-body svg {
  pointer-events: none;
  width: 100%;
  height: 100%;
}

.teacher-diag-badge-overlay {
  position: absolute;
  top: 6px;
  right: 6px;
  background: rgba(3, 13, 29, 0.85);
  border: 1px solid var(--ga-border-gold);
  color: var(--ga-gold-light);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  pointer-events: none;
}

/* --- TIMER DEPLOY SPLASH & ANIMATION --- */
.timer-deploy-splash {
  position: absolute;
  inset: 0;
  z-index: 1500;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.deploy-splash-box {
  background: rgba(3, 13, 29, 0.96);
  border: 3px solid var(--ga-gold);
  border-radius: 20px;
  padding: 30px 50px;
  text-align: center;
  box-shadow: 0 0 60px rgba(223, 155, 53, 0.6), 0 20px 50px rgba(0, 0, 0, 0.9);
  max-width: 85%;
  animation: deploySplashPop 2.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.deploy-splash-time {
  font-size: 5rem;
  font-weight: 900;
  color: var(--ga-gold);
  font-family: 'Courier New', monospace;
  letter-spacing: 2px;
  text-shadow: 0 0 25px rgba(223, 155, 53, 0.8);
}

.deploy-splash-task {
  font-size: 1.4rem;
  font-weight: 700;
  color: #ffffff;
  margin-top: 10px;
  line-height: 1.4;
  word-break: break-word;
}

@keyframes deploySplashPop {
  0% {
    opacity: 0;
    transform: scale(0.6) translateY(30px);
  }
  15% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  70% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  100% {
    opacity: 0;
    transform: scale(0.25) translate(400px, -350px);
  }
}

/* --- 30-SECOND WARNING PULSE --- */
.timer-pill.timer-warning {
  background: var(--ga-red) !important;
  color: #ffffff !important;
  animation: timerPulseGlow 1s ease-in-out infinite alternate !important;
  box-shadow: 0 0 16px var(--ga-red) !important;
}

@keyframes timerPulseGlow {
  0% {
    transform: scale(1);
    box-shadow: 0 0 8px rgba(244, 63, 94, 0.6);
  }
  100% {
    transform: scale(1.15);
    box-shadow: 0 0 24px rgba(244, 63, 94, 1);
  }
}

/* --- 5-SECOND FINAL COUNTDOWN OVERLAY --- */
.timer-final-countdown {
  position: absolute;
  inset: 0;
  z-index: 1400;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none !important; /* Critical: allows uninterrupted student work */
}

.final-countdown-number {
  font-size: 18rem;
  font-weight: 900;
  color: rgba(244, 63, 94, 0.38);
  font-family: 'Courier New', monospace;
  text-shadow: 0 0 50px rgba(244, 63, 94, 0.8);
  user-select: none;
  pointer-events: none !important;
  animation: countdownDigitBeat 1s ease-in-out infinite;
}

@keyframes countdownDigitBeat {
  0% {
    transform: scale(1.25);
    opacity: 0.9;
  }
  50% {
    transform: scale(1);
    opacity: 0.35;
  }
  100% {
    transform: scale(1.25);
    opacity: 0.9;
  }
}


/* --- AI MISCONCEPTION DIAGNOSTICS --- */
.ai-analysis-box {
  background: var(--ga-navy-input);
  border: 1px solid var(--ga-border-gold);
  border-radius: 10px;
  padding: 14px;
  max-height: 380px;
  overflow-y: auto;
}

.ai-summary-list {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai-summary-item {
  color: #ffffff;
  font-size: 0.88rem;
  line-height: 1.4;
}

.ai-misconception-title {
  font-weight: 700;
  color: #f1f5f9;
}

.ai-student-count-badge {
  display: inline-block;
  background: rgba(223, 155, 53, 0.18);
  border: 1px solid var(--ga-gold);
  color: var(--ga-gold-light);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 12px;
  margin-left: 6px;
}

.ai-detail-card {
  background: var(--ga-navy-card);
  border: 1px solid var(--ga-border);
  border-radius: 8px;
  padding: 12px;
  margin-top: 10px;
}

.ai-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.ai-affected-desks-tag {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ga-text-muted);
}

.ai-detail-explanation {
  margin: 0 0 10px 0;
  font-size: 0.82rem;
  color: #cbd5e1;
  line-height: 1.45;
}

.ai-recommended-action {
  background: #064e3b;
  border-left: 3px solid #10b981;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: #a7f3d0;
  line-height: 1.4;
}

.spin {
  animation: spin 1s linear infinite;
}

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