.learn-body {
  min-height: 100vh;
}

.learn-main {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(320px, 1.2fr);
  gap: 16px;
  padding: 12px 16px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 860px) {
  .learn-main {
    grid-template-columns: 1fr;
  }
}

.learn-panel {
  border: 1px solid var(--line, #30363d);
  border-radius: 12px;
  background: var(--panel, #161b22);
  padding: 14px;
  min-width: 0;
}

.learn-subject h3 {
  margin: 12px 0 8px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint, #8b949e);
}

.learn-skill-grid {
  display: grid;
  gap: 8px;
}

.learn-skill {
  appearance: none;
  text-align: left;
  border: 1px solid var(--line-soft, #30363d);
  background: color-mix(in srgb, var(--bg, #0d1117) 88%, transparent);
  color: inherit;
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  display: grid;
  gap: 2px;
  font: inherit;
}

.learn-skill:hover:not(:disabled) {
  border-color: var(--accent, #58a6ff);
}

.learn-skill.is-active {
  border-color: var(--accent, #58a6ff);
  background: color-mix(in srgb, var(--accent, #58a6ff) 12%, transparent);
}

.learn-skill.is-done .ls-name::after {
  content: "";
}

.learn-skill.is-locked,
.learn-skill:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ls-name {
  font-weight: 700;
  font-size: 0.92rem;
}

.ls-meta,
.ls-prereq {
  font-size: 0.72rem;
  color: var(--faint, #8b949e);
}

.ls-badge {
  font-size: 0.65rem;
  font-weight: 700;
  color: #3fb950;
}

.ls-badge.is-lock {
  color: #d29922;
}

.learn-desc {
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--muted, #c9d1d9);
}

.learn-evidence {
  margin: 0 0 14px;
  padding-left: 1.1rem;
  font-size: 0.8rem;
  color: var(--faint, #8b949e);
}

.learn-prompt-box {
  border-radius: 12px;
  border: 1px dashed color-mix(in srgb, var(--accent, #58a6ff) 40%, var(--line));
  padding: 18px 16px;
  margin-bottom: 12px;
  text-align: center;
  background: color-mix(in srgb, var(--accent, #58a6ff) 6%, transparent);
}

.learn-prompt-label {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 6px;
}

.learn-prompt {
  font-size: 1.75rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.learn-input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}

.learn-input {
  flex: 1 1 160px;
  min-width: 140px;
  font: inherit;
  font-size: 1rem;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg, #0d1117);
  color: var(--ink, #e6edf3);
}

.learn-layout-label {
  font-size: 0.75rem;
  color: var(--faint);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.learn-layout-label select {
  font: inherit;
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: inherit;
}

.learn-feedback {
  min-height: 1.4em;
  font-weight: 650;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.learn-feedback.is-ok {
  color: #3fb950;
}

.learn-feedback.is-bad {
  color: #f85149;
}

.learn-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.learn-session {
  font-size: 0.8rem;
  color: var(--faint);
}