/* ICOA Extra — Sandbox Guide styles (dark, ICOA brand) */
.extra-main { padding-top: 100px; }

.extra-hero {
  padding: 50px 0 30px;
  text-align: center;
}
.extra-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ico-accent);
  letter-spacing: 0.15em;
  display: inline-block;
  margin-bottom: 10px;
}
.extra-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  margin: 8px 0 14px;
  background: var(--ico-gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}
.extra-sub {
  color: var(--ico-text-secondary);
  max-width: 760px;
  margin: 0 auto 20px;
  font-size: 1.05rem;
  line-height: 1.65;
}
.extra-sub code {
  background: rgba(0, 0, 0, 0.3);
  padding: 2px 7px;
  border-radius: 3px;
  color: var(--ico-accent);
  font-family: var(--font-mono);
  font-size: 0.88em;
}
.extra-sub strong { color: var(--ico-text-primary); }
.extra-meta {
  display: inline-flex;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ico-text-muted);
  padding: 10px 22px;
  border: 1px solid var(--ico-border-subtle);
  border-radius: 999px;
  background: var(--ico-bg-panel);
  margin-top: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.extra-section { padding: 50px 0; }
.extra-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  color: var(--ico-text-primary);
  margin: 0 0 12px;
  text-align: center;
}
.extra-lead {
  text-align: center;
  color: var(--ico-text-secondary);
  max-width: 720px;
  margin: 0 auto 36px;
  font-size: 1rem;
  line-height: 1.6;
}

/* Baseline cards */
.baseline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
.baseline-card {
  background: var(--ico-bg-panel);
  border: 1px solid var(--ico-border-subtle);
  border-top: 3px solid var(--ico-primary);
  border-radius: 10px;
  padding: 18px 22px;
}
.baseline-card h3 {
  font-family: var(--font-display);
  color: var(--ico-text-primary);
  font-size: 1.02rem;
  margin: 0 0 8px;
}
.baseline-card p {
  margin: 0;
  color: var(--ico-text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}
.baseline-card code {
  background: rgba(0, 0, 0, 0.3);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--ico-accent);
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* Tool categories */
.tool-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
}
.tool-cat {
  background: var(--ico-bg-panel);
  border: 1px solid var(--ico-border-subtle);
  border-radius: 10px;
  padding: 16px 18px;
}
.tool-cat h3 {
  font-family: var(--font-display);
  color: var(--ico-accent);
  font-size: 0.88rem;
  margin: 0 0 10px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.tool-cat-py h3 { color: #d4b3ff; }
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pill {
  background: rgba(93, 120, 255, 0.12);
  border: 1px solid rgba(93, 120, 255, 0.35);
  color: var(--ico-text-primary);
  padding: 3px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.pill-py {
  background: rgba(107, 63, 160, 0.15);
  border-color: rgba(107, 63, 160, 0.45);
  color: #d4b3ff;
}

/* CLI command table */
.cmd-table {
  max-width: 860px;
  margin: 0 auto;
  background: var(--ico-bg-panel);
  border: 1px solid var(--ico-border-subtle);
  border-radius: 10px;
  overflow: hidden;
}
.cmd-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(93, 120, 255, 0.12);
  align-items: start;
}
.cmd-row:last-child { border-bottom: none; }
.cmd-row > code {
  font-family: var(--font-mono);
  color: var(--ico-accent);
  background: rgba(0, 0, 0, 0.35);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.88rem;
  white-space: nowrap;
  justify-self: start;
}
.cmd-row span {
  color: var(--ico-text-secondary);
  line-height: 1.55;
  font-size: 0.94rem;
}
.cmd-row span code {
  background: rgba(0, 0, 0, 0.3);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--ico-accent);
  font-family: var(--font-mono);
  font-size: 0.85em;
}
@media (max-width: 620px) {
  .cmd-row { grid-template-columns: 1fr; gap: 6px; }
}

/* AI tracks */
.track-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}
.track-card {
  background: var(--ico-bg-panel);
  border: 1px solid var(--ico-border-subtle);
  border-radius: 10px;
  padding: 22px 26px;
}
.track-card:nth-child(1) { border-top: 3px solid var(--ico-success); }
.track-card:nth-child(2) { border-top: 3px solid var(--red-team); }
.track-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--ico-accent);
  display: block;
  margin-bottom: 6px;
}
.track-card h3 {
  font-family: var(--font-display);
  color: var(--ico-text-primary);
  font-size: 1.2rem;
  margin: 0 0 10px;
}
.track-card p {
  color: var(--ico-text-secondary);
  line-height: 1.6;
  margin: 0 0 10px;
}
.track-card ul {
  padding-left: 22px;
  margin: 8px 0 0;
  color: var(--ico-text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}
.track-card code {
  background: rgba(0, 0, 0, 0.3);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--ico-accent);
  font-family: var(--font-mono);
  font-size: 0.85em;
}
.track-card strong { color: var(--ico-text-primary); }

/* Focus by paper */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}
.focus-card {
  background: var(--ico-bg-panel);
  border: 1px solid var(--ico-border-subtle);
  border-top: 3px solid var(--ico-primary);
  border-radius: 10px;
  padding: 18px 20px;
}
.focus-c { border-top-color: var(--ico-success); }
.focus-b { border-top-color: var(--ico-warning); }
.focus-a { border-top-color: var(--ico-error); }
.focus-s {
  border-top-color: var(--ico-cat-ai);
  background: linear-gradient(135deg, rgba(107, 63, 160, 0.06), var(--ico-bg-panel));
}
.focus-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--ico-text-primary);
  margin: 0 0 2px;
}
.focus-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ico-text-muted);
  margin: 0 0 10px;
  letter-spacing: 0.04em;
}
.focus-card p:last-child {
  margin: 0;
  color: var(--ico-text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}
.focus-card code {
  background: rgba(0, 0, 0, 0.3);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--ico-accent);
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* Exam mechanics */
.mechanics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  max-width: 980px;
  margin: 0 auto;
}
.mech-card {
  background: var(--ico-bg-panel);
  border: 1px solid var(--ico-border-subtle);
  border-left: 3px solid var(--ico-accent);
  border-radius: 8px;
  padding: 14px 18px;
}
.mech-card h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--ico-text-primary);
  margin: 0 0 6px;
}
.mech-card p {
  margin: 0;
  color: var(--ico-text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
}
.mech-card code {
  background: rgba(0, 0, 0, 0.3);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--ico-accent);
  font-family: var(--font-mono);
  font-size: 0.82em;
}

/* Back-to navigation row */
.extra-back {
  text-align: center;
  padding: 30px 0 60px;
}
.extra-back .btn { margin: 6px; }