:root {
  --dct-workshop-bg: #F3F9FF;
  --dct-workshop-panel: rgba(255, 255, 255, 0.92);
  --dct-workshop-panel-strong: rgba(255, 255, 255, 0.98);
  --dct-workshop-text: #11152d;
  --dct-workshop-muted: #4a567d;
  --dct-workshop-line: rgba(23, 139, 231, 0.14);
  --dct-workshop-purple: #178BE7;
  --dct-workshop-pink: #0F6EDB;
  --dct-workshop-blue: #2C9DFF;
  --dct-workshop-teal: #17c8c1;
  --dct-workshop-surface: rgba(255, 255, 255, 0.95);
  --dct-workshop-card: rgba(255, 255, 255, 0.98);
  --dct-workshop-card-border: rgba(23, 139, 231, 0.12);
  --dct-workshop-soft: rgba(23, 139, 231, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--dct-workshop-text);
  background:
    radial-gradient(circle at top left, rgba(23, 139, 231, 0.06), transparent 30%),
    radial-gradient(circle at top right, rgba(15, 110, 219, 0.05), transparent 24%),
    linear-gradient(180deg, #ffffff 0%, #F3F9FF 100%);
}

.dct-workshop-shell {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
}

.dct-workshop-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--dct-workshop-line);
  border-radius: 16px;
  background: var(--dct-workshop-surface);
  backdrop-filter: blur(14px);
  box-shadow: 0 20px 50px rgba(17, 21, 45, 0.08);
}

.dct-workshop-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--dct-workshop-text);
}

.dct-workshop-brand img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.dct-workshop-brand strong {
  display: block;
  font-size: 1.02rem;
}

.dct-workshop-brand span {
  display: block;
  color: var(--dct-workshop-muted);
  font-size: 0.84rem;
}

.dct-workshop-actions {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.dct-btn {
  border: 0;
  border-radius: 999px;
  padding: 0.62rem 1rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.dct-btn:hover {
  transform: translateY(-1px);
}

.dct-btn.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--dct-workshop-purple), var(--dct-workshop-blue));
  box-shadow: 0 12px 24px rgba(23, 139, 231, 0.22);
}

.dct-btn.secondary {
  color: var(--dct-workshop-text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.dct-workshop-hero,
.dct-workshop-card {
  margin-top: 0.95rem;
  border-radius: 18px;
  border: 1px solid var(--dct-workshop-card-border);
  background: var(--dct-workshop-card);
  box-shadow: 0 18px 42px rgba(17, 21, 45, 0.06);
}

.dct-workshop-hero {
  padding: 1.15rem 1.15rem 1rem;
}

.dct-workshop-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(23, 139, 231, 0.08);
  color: var(--dct-workshop-purple);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.dct-workshop-hero h1 {
  margin: 0.7rem 0 0;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.1;
}

.dct-workshop-hero p,
.dct-workshop-card p {
  color: var(--dct-workshop-muted);
  line-height: 1.6;
}

.dct-workshop-meta {
  margin-top: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.dct-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  background: #EAF4FF;
  border: 1px solid rgba(23, 139, 231, 0.12);
  color: #0F6EDB;
  font-size: 0.83rem;
  font-weight: 700;
}

.dct-workshop-card {
  padding: 1rem;
}

.dct-workshop-card h2 {
  margin: 0;
  font-size: 1.2rem;
  color: #f4f7ff;
}

.dct-slide-grid {
  margin-top: 0.85rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 0.8rem;
}

.dct-slide {
  border-radius: 14px;
  border: 1px solid var(--dct-workshop-card-border);
  background: #ffffff;
  padding: 0.9rem;
}

.dct-slide h3 {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  color: var(--dct-workshop-purple);
}

.dct-slide .label {
  margin: 0;
  color: var(--dct-workshop-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 800;
  font-size: 0.78rem;
}

.dct-onscreen {
  margin: 0.4rem 0 0;
  padding-left: 1rem;
  color: #11152d;
  line-height: 1.48;
}

.dct-onscreen li + li {
  margin-top: 0.25rem;
}

.dct-notes {
  display: none;
  margin-top: 0.65rem;
  padding: 0.72rem;
  border-radius: 12px;
  background: rgba(46, 144, 255, 0.08);
  border: 1px solid rgba(74, 163, 255, 0.18);
  color: #1e2a54;
  line-height: 1.5;
  font-size: 0.94rem;
}

body.instructor-unlocked .dct-notes {
  display: block;
}

.dct-notes-locked {
  margin-top: 0.85rem;
  padding: 0.8rem 0.85rem;
  border-radius: 12px;
  border: 1px dashed rgba(23, 139, 231, 0.24);
  background: #F3F9FF;
  color: var(--dct-workshop-muted);
}

body.instructor-unlocked .dct-notes-locked {
  display: none;
}

.dct-workshop-footer {
  margin-top: 0.9rem;
  color: var(--dct-workshop-muted);
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .dct-workshop-header {
    padding: 0.85rem;
  }

  .dct-workshop-shell {
    width: min(1120px, calc(100% - 1rem));
  }

  .dct-workshop-hero,
  .dct-workshop-card {
    border-radius: 16px;
  }
}

@media print {
  body {
    background: #fff !important;
    color: #000 !important;
  }

  .dct-workshop-header,
  .dct-workshop-footer,
  .dct-notes-locked,
  .dct-btn {
    display: none !important;
  }

  .dct-workshop-shell {
    width: 100% !important;
    padding: 0 !important;
  }

  .dct-workshop-hero,
  .dct-workshop-card,
  .dct-slide {
    break-inside: avoid;
    box-shadow: none !important;
  }

  .dct-notes {
    display: block !important;
  }
}