/* assets/css/pages/interactive-labs.css */

.labs-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem 1.5rem;
}

/* Hero Section */
.labs-hero {
  background: radial-gradient(circle at top left, color-mix(in srgb, var(--color-primary) 18%, var(--color-bg-surface)), var(--color-bg-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: 2.5rem 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.labs-hero-title {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-text-main);
  margin: 0 0 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.labs-hero-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 44rem;
  margin: 0;
  line-height: 1.5;
}

/* Tabs Navigation */
.labs-tabs-nav {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.lab-tab-btn {
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.lab-tab-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, transparent);
}

.lab-tab-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

/* Workbench Cards */
.lab-workbench {
  display: none;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: 2rem;
  box-shadow: var(--shadow-xl);
  animation: labFadeIn 0.3s ease forwards;
}

.lab-workbench.active {
  display: block;
}

@keyframes labFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.wb-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.wb-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.wb-desc {
  margin: 0.35rem 0 0 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* 1. Math Fraction Workbench */
.fraction-palette {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  background: var(--color-bg-base);
  padding: 1rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.fraction-strip-item {
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-md);
  color: white;
  font-weight: 800;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.fraction-strip-item:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-md);
}

.math-target-bar-wrap {
  margin-bottom: 1.5rem;
}

.target-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 0.4rem;
}

.math-target-track {
  height: 1.25rem;
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.math-target-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #10b981);
  transition: width 0.3s ease;
}

.math-drop-zone {
  min-height: 5.5rem;
  background: var(--color-bg-base);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1rem;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.active-fraction-piece {
  min-width: 4rem;
  height: 3.5rem;
  border-radius: var(--radius-lg);
  color: white;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.75rem;
  box-shadow: var(--shadow-sm);
  animation: popIn 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes popIn {
  from { transform: scale(0.8); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.remove-strip-btn {
  background: rgba(0, 0, 0, 0.25);
  border: none;
  color: white;
  border-radius: 50%;
  width: 1.5rem;
  height: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  margin-left: 0.5rem;
}

/* 2. ELA Morpheme Workbench */
.morpheme-palette {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.morpheme-column {
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1rem;
}

.morpheme-column h4 {
  margin: 0 0 0.75rem 0;
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.morpheme-piece-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.morpheme-piece {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-surface);
  color: var(--color-text-main);
  font-weight: 800;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
}

.morpheme-piece:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.morpheme-piece.used {
  opacity: 0.4;
  pointer-events: none;
}

.ela-drop-zone {
  min-height: 5rem;
  background: var(--color-bg-base);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1rem;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.active-morpheme-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-lg);
  font-weight: 800;
  box-shadow: var(--shadow-sm);
}

.tag-prefix { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }
.tag-root { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.tag-suffix { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }

.remove-morpheme {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  color: inherit;
  opacity: 0.7;
}

.remove-morpheme:hover {
  opacity: 1;
}

/* 3. Science Balance Scale Workbench */
.science-scale-stage {
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
}

.scale-fulcrum-wrap {
  position: relative;
  width: 320px;
  height: 180px;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.scale-beam {
  position: absolute;
  top: 40px;
  width: 280px;
  height: 12px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transform-origin: center center;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.scale-pan-left,
.scale-pan-right {
  position: absolute;
  top: 12px;
  width: 60px;
  height: 40px;
  background: var(--color-bg-surface);
  border: 2px solid var(--color-border);
  border-radius: 0 0 16px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
}

.scale-pan-left { left: 10px; }
.scale-pan-right { right: 10px; }

.scale-fulcrum {
  width: 0;
  height: 0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-bottom: 60px solid var(--color-text-muted);
}

.scale-controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  width: 100%;
  margin-top: 1.5rem;
}

.scale-pan-control-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* 4. Social Timeline Sorter */
.timeline-slots-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.timeline-sort-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: transform 0.2s, box-shadow 0.2s;
}

.timeline-sort-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.timeline-slot-num {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--color-primary);
  width: 2rem;
}

.timeline-card-content {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-grow: 1;
}

.timeline-card-content i {
  font-size: 1.35rem;
  color: var(--color-primary);
}

.timeline-shift-controls {
  display: flex;
  gap: 0.4rem;
}

.btn-shift-up,
.btn-shift-down {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-surface);
  color: var(--color-text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.btn-shift-up:hover:not(:disabled),
.btn-shift-down:hover:not(:disabled) {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-shift-up:disabled,
.btn-shift-down:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Actions & Feedback */
.wb-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.feedback-container {
  font-size: 0.95rem;
  font-weight: 700;
}