.tutorial-dialog-overlay {
  position: fixed;
  inset: 0;
  z-index: 5000;
  background: var(--scrim);
  display: flex;
  align-items: center;
  justify-content: center;
}

.tutorial-dialog-modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 870px;
  max-width: calc(100vw - 2rem);
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 40px var(--shadow-lg);
  font-family: var(--font-mono);
  overflow: hidden;
}

.tutorial-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 21px;
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-label);
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.tutorial-dialog-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  padding: 3px 4px;
  display: flex;
  align-items: center;
  border-radius: 3px;
  transition: color 0.15s, background 0.15s;
  line-height: 1;
  font-size: 1rem;
}
.tutorial-dialog-close:hover {
  color: var(--text);
  background: var(--surface2);
}

.tutorial-slide-image {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.tutorial-slide-image img,
.tutorial-slide-image video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.tutorial-slide-placeholder {
  color: var(--muted);
  font-size: var(--fs-caption);
  opacity: 0.4;
  font-family: var(--font-mono);
}

.tutorial-slide-content {
  padding: 1.875rem 2.25rem 1.5rem;
}
.tutorial-slide-title {
  font-size: var(--fs-body-lg);
  color: var(--text);
  font-weight: 600;
  margin-bottom: 0.675rem;
}
.tutorial-slide-body {
  font-size: var(--fs-caption);
  color: var(--muted);
  line-height: 1.65;
}

.tutorial-dialog-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem 2.25rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  gap: 1.125rem;
}

.tutorial-show-on-load {
  display: flex;
  align-items: center;
  gap: 0.675rem;
  font-size: var(--fs-caption);
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}
.tutorial-show-on-load input[type="checkbox"] {
  cursor: pointer;
  accent-color: var(--accent);
}

.tutorial-dialog-dots {
  display: flex;
  gap: 9px;
  align-items: center;
}
.tutorial-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.2s, transform 0.2s;
  cursor: pointer;
}
.tutorial-dot.active {
  background: var(--accent);
  transform: scale(1.3);
}

.tutorial-dialog-nav {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}