/**
 * Shared lesson chrome — load last in <head> (after page <style> blocks).
 * Uses --qd-lesson-* from track token sheets + existing lesson variables.
 */

/* Primary lesson action (Track 1 & 2) */
.complete-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--qd-space-2, 8px);
  min-height: var(--qd-space-12, 48px);
  padding: var(--qd-space-3, 12px) calc(var(--qd-space-8, 32px) - var(--qd-space-1, 4px));
  font-family: var(--qd-font-sans, "IBM Plex Sans", system-ui, sans-serif);
  font-size: var(--qd-font-size-md, 1rem);
  font-weight: 700;
  line-height: var(--qd-line-height-tight, 1.2);
  text-align: center;
  border: none;
  border-radius: var(--radius-lg, 14px);
  cursor: pointer;
  color: var(--qd-color-on-accent-dark, #06080f);
  background: var(--qd-lesson-cta-gradient);
  box-shadow: var(--qd-shadow-control, 0 4px 20px rgba(0, 0, 0, 0.22));
  transition: transform 0.22s ease, box-shadow 0.22s ease, filter 0.22s ease, background 0.22s ease,
    border-color 0.22s ease, color 0.22s ease;
}

.complete-btn:hover:not(:disabled):not(.done) {
  transform: translateY(-2px);
  filter: brightness(1.04);
  box-shadow: var(--qd-shadow-control-hover, 0 8px 28px rgba(0, 0, 0, 0.3));
}

.complete-btn.done {
  background: var(--bg-tertiary);
  color: var(--qd-lesson-complete-accent);
  border: 2px solid var(--qd-lesson-complete-bd);
  box-shadow: none;
  transform: none;
  cursor: default;
  filter: none;
}

.complete-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  filter: none;
}

/* Track 2 mastery / compact mark control */
.mark-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.38rem 0.9rem;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  color: var(--qd-color-on-accent-light, #fff);
  background: var(--t2);
  box-shadow: var(--qd-shadow-accent-blue-soft, 0 0 12px rgba(59, 130, 246, 0.25));
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.mark-btn:hover:not(:disabled) {
  background: var(--t2-dim);
  transform: scale(1.03);
}

.mark-btn.done {
  background: var(--accent-emerald);
  box-shadow: var(--qd-shadow-accent-success-soft, 0 0 12px rgba(16, 185, 129, 0.25));
}

.mark-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ─────────────────────────────────────────────────────────────
   Track 2 — shared "confidence" component
   (Many lessons inline-define .confidence-wrap/.conf-btn; we override
   from this shared sheet so alignment/spacing stays consistent.)
───────────────────────────────────────────────────────────── */
body[data-track="2"] .confidence-wrap {
  margin: 2rem 0 1.5rem;
  padding: 1.4rem 1.6rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

body[data-track="2"] .conf-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.1rem;
  font-weight: 500;
}

body[data-track="2"] .conf-scale {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-start;
}

body[data-track="2"] .conf-btn {
  flex: 1;
  min-width: 60px;
  padding: 0.65rem 0.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-card);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 1.3rem;
  transition: all 0.2s;
  font-family: var(--qd-font-sans, "IBM Plex Sans", system-ui, sans-serif);
}

body[data-track="2"] .conf-btn span {
  font-size: 0.68rem;
  color: var(--text-tertiary);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
}

body[data-track="2"] .conf-btn:hover {
  border-color: var(--t2-bd);
  background: var(--t2-bg);
}

body[data-track="2"] .conf-btn.selected {
  border-color: var(--t2-bd);
  background: var(--t2-bg);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

body[data-track="2"] .conf-btn.selected span {
  color: var(--t2);
}

body[data-track="2"] .conf-feedback {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-top: 0.75rem;
  min-height: 1.2em;
  font-style: italic;
}

@media (max-width: 640px) {
  body[data-track="2"] .conf-scale {
    gap: 0.35rem;
  }
  body[data-track="2"] .conf-btn {
    min-width: 52px;
    padding: 0.55rem 0.35rem;
  }
}

/* Shared lesson structure normalization (Phase 4) */
.lesson-hero,
.content-section,
.summary-section,
.sources-section,
.lesson-nav {
  box-sizing: border-box;
}

.lesson-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--qd-space-3, 12px);
}

.lesson-nav-card {
  min-width: 0;
}

/* Simulator resilience and responsiveness (Phase 5) */
.simulator,
.sim-outer,
.sim-wrap,
.ic-widget,
.phase-widget {
  max-width: 100%;
  overflow-x: hidden;
  box-sizing: border-box;
}

.sim-body,
.sim-grid,
.sim-controls,
.ic-controls,
.controls,
.control-row {
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}

.simulator canvas,
.sim-outer canvas,
.sim-wrap canvas {
  max-width: 100%;
  height: auto;
}

.sim-btn,
.sim button[data-action="reset"],
.sim-controls button[data-action="reset"] {
  min-height: var(--qd-button-height-md, 44px);
}

@media (max-width: 860px) {
  .sim-controls,
  .ic-controls,
  .control-row {
    flex-wrap: wrap;
  }
}
