/* =========================================================================
   ICTONE PRACTICAL LAB - BLOCK PROGRAMMING WITH SCRATCH STYLES
   ========================================================================= */

.block-lab-page {
  background-color: #F8FAFC;
  color: #0F172A;
  min-height: 100vh;
}

/* Compact Lab Header */
.lab-header-compact {
  background: #FFFFFF;
  border-bottom: 1px solid #E2E8F0;
  padding: 1.5rem 0;
}

.lab-header-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.back-to-hub {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #64748B;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s ease;
  width: fit-content;
}

.back-to-hub:hover {
  color: #2563EB;
}

.lab-title-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.lab-title-row h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: #0F172A;
  margin: 0;
  letter-spacing: -0.02em;
}

.lab-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #EFF6FF;
  color: #2563EB;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.lab-subtitle {
  color: #64748B;
  font-size: 0.95rem;
  margin: 0;
  max-width: 680px;
}

/* Page Container */
.block-lab-main {
  padding: 2.5rem 0 4rem;
}

.block-lab-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

/* Primary Scratch Hero Launcher Card */
.scratch-hero-card {
  background: linear-gradient(135deg, #FFFFFF 0%, #F0F7FF 100%);
  border: 1px solid #BFDBFE;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.08), 0 8px 10px -6px rgba(37, 99, 235, 0.04);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  position: relative;
  overflow: hidden;
}

.scratch-hero-card::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, rgba(37, 99, 235, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.scratch-hero-info {
  max-width: 680px;
  z-index: 1;
}

.scratch-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: #2563EB;
  background: #DBEAFE;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.scratch-hero-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: #0F172A;
  margin: 0 0 0.5rem;
}

.scratch-hero-desc {
  color: #475569;
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
}

.scratch-hero-action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
  z-index: 1;
  flex-shrink: 0;
}

.btn-open-scratch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: #2563EB;
  color: #FFFFFF !important;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 0.85rem 1.6rem;
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-open-scratch:hover {
  background: #1D4ED8;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
  color: #FFFFFF !important;
}

.scratch-note {
  font-size: 0.82rem;
  color: #64748B;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Section Header */
.section-title-wrap {
  margin-bottom: 1.5rem;
}

.section-title-wrap h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: #0F172A;
  margin: 0 0 0.35rem;
}

.section-title-wrap p {
  color: #64748B;
  font-size: 0.95rem;
  margin: 0;
}

/* Getting Started Steps */
.steps-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.step-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.step-card:hover {
  border-color: #CBD5E1;
  transform: translateY(-2px);
}

.step-num-badge {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #EFF6FF;
  color: #2563EB;
  font-size: 0.9rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #0F172A;
  margin: 0;
}

.step-card p {
  font-size: 0.88rem;
  color: #64748B;
  line-height: 1.5;
  margin: 0;
}

/* Practice Activities Grid */
.activities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}

.activity-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 1.4rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.03);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.2rem;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.activity-card:hover {
  border-color: #93C5FD;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.08);
}

.activity-card:focus-visible {
  outline: 2px solid #2563EB;
  outline-offset: 2px;
}

.activity-card-top {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.activity-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.activity-num {
  font-size: 0.8rem;
  font-weight: 700;
  color: #64748B;
  background: #F1F5F9;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}

.diff-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  text-transform: capitalize;
}

.diff-beginner {
  background: #DCFCE7;
  color: #166534;
}

.diff-intermediate {
  background: #FEF3C7;
  color: #92400E;
}

.diff-challenge {
  background: #FEE2E2;
  color: #991B1B;
}

.activity-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0F172A;
  margin: 0;
  line-height: 1.35;
}

.activity-concept {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: #2563EB;
}

.activity-task-snippet {
  font-size: 0.9rem;
  color: #475569;
  line-height: 1.5;
  margin: 0;
}

.activity-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  border-top: 1px solid #F1F5F9;
}

.activity-view-btn {
  font-size: 0.88rem;
  font-weight: 600;
  color: #2563EB;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.activity-card:hover .activity-view-btn {
  color: #1D4ED8;
}

/* Blocks Reference Grid */
.ref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.25rem;
}

.ref-category-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.ref-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.ref-color-indicator {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

.cat-motion { background-color: #4C97FF; }
.cat-looks { background-color: #9966FF; }
.cat-sound { background-color: #CF63CF; }
.cat-events { background-color: #FFBF00; }
.cat-control { background-color: #FFAB19; }
.cat-sensing { background-color: #5CB1D6; }
.cat-operators { background-color: #59C059; }
.cat-variables { background-color: #FF8C1A; }

.ref-category-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #0F172A;
  margin: 0;
}

.ref-desc {
  font-size: 0.85rem;
  color: #64748B;
  margin: 0;
  line-height: 1.45;
}

.ref-blocks-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

.ref-block-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  color: #1E293B;
  display: inline-flex;
  align-items: center;
}

/* Algorithm to Program Comparison Section */
.algo-comparison-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 2rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.progression-pills {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.prog-pill {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 700;
  background: #F1F5F9;
  color: #334155;
  border: 1px solid #E2E8F0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.prog-pill.is-active,
.prog-pill.active-pill {
  background: #EFF6FF !important;
  color: #1D4ED8 !important;
  border-color: #93C5FD !important;
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.12);
}

.prog-arrow {
  color: #94A3B8;
  font-weight: 700;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.comparison-box {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.comparison-box h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: #334155;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.comparison-box pre {
  margin: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  line-height: 1.5;
  color: #0F172A;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 6px;
  padding: 0.75rem;
  overflow-x: auto;
}

.comparison-box p {
  font-size: 0.85rem;
  color: #64748B;
  margin: 0;
  line-height: 1.45;
}

/* Activity Modal */
.block-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(3px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.block-modal-backdrop.open {
  display: flex;
}

.block-modal-content {
  background: #FFFFFF;
  border-radius: 16px;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  position: relative;
  display: flex;
  flex-direction: column;
  animation: modalPop 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from { transform: scale(0.96); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.block-modal-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid #E2E8F0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.modal-header-text h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #0F172A;
  margin: 0.25rem 0 0;
}

.modal-header-badges {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-close-modal {
  background: none;
  border: none;
  color: #64748B;
  cursor: pointer;
  padding: 0.3rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-close-modal:hover {
  background: #F1F5F9;
  color: #0F172A;
}

.block-modal-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.modal-section-block h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.4rem;
}

.modal-section-block p {
  font-size: 0.95rem;
  color: #334155;
  line-height: 1.55;
  margin: 0;
}

.modal-steps-list {
  margin: 0;
  padding-left: 1.25rem;
  color: #334155;
  font-size: 0.92rem;
  line-height: 1.6;
}

.modal-steps-list li {
  margin-bottom: 0.35rem;
}

.modal-suggested-blocks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.suggested-block-pill {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
  color: #1E293B;
}

.block-modal-footer {
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.modal-notice-text {
  font-size: 0.8rem;
  color: #64748B;
  margin: 0;
}

/* Attribution Note */
.attribution-section {
  text-align: center;
  padding: 1rem 0;
  border-top: 1px solid #E2E8F0;
  color: #94A3B8;
  font-size: 0.82rem;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .scratch-hero-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .steps-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .comparison-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .steps-grid-4 {
    grid-template-columns: 1fr;
  }
  .activities-grid {
    grid-template-columns: 1fr;
  }
  .block-modal-footer {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-open-scratch {
    width: 100%;
  }
}