/* =============================================================
   Software Training — two-track explorer
   ============================================================= */

/* ---------- Track selector ---------- */
.trn-tracks {
  margin-top: clamp(34px, 4vw, 56px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2vw, 24px);
}
.trn-track {
  text-align: left;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 2.6vw, 38px);
  cursor: pointer;
  display: flex; flex-direction: column; gap: 14px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), transform 0.3s var(--ease);
  position: relative; overflow: hidden;
}
.trn-track::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(90% 70% at 85% 0%, rgba(201,123,61,0.10), transparent 60%);
  opacity: 0; transition: opacity 0.3s var(--ease); pointer-events: none;
}
.trn-track:hover { transform: translateY(-3px); border-color: var(--copper); }
.trn-track:hover::after { opacity: 1; }
.trn-track.active { border-color: var(--copper); background: linear-gradient(180deg, rgba(201,123,61,0.12), rgba(11,17,24,0)), var(--ink-3); }
.trn-track .tt-top { display: flex; align-items: center; gap: 16px; }
.trn-track .tt-ico { width: 40px; height: 40px; color: var(--copper-hi); flex-shrink: 0; }
.trn-track .tt-ico svg { width: 100%; height: 100%; }
.trn-track .tt-num { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.2em; color: var(--text-dim); }
.trn-track.active .tt-num { color: var(--copper-hi); }
.trn-track h3 { font-family: var(--font-display); font-size: clamp(24px, 2.4vw, 34px); line-height: 1.05; }
.trn-track h3 em { font-style: italic; color: var(--copper-hi); }
.trn-track p { color: var(--text-mute); font-size: 14.5px; line-height: 1.5; }
.trn-track .tt-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 2px; }
.trn-track .tt-chip {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--text-mute);
}
@media (max-width: 820px) { .trn-tracks { grid-template-columns: 1fr; } }

/* ---------- Track detail panel ---------- */
.trn-panel { display: none; margin-top: clamp(28px, 3vw, 44px); }
.trn-panel.active { display: block; animation: trnFade 0.4s var(--ease); }
@keyframes trnFade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.trn-detail {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--ink-2);
  overflow: hidden;
}
.trn-detail-bar {
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 16px clamp(20px, 2.4vw, 32px);
  border-bottom: 1px solid var(--line);
  background: var(--ink-3);
}
.trn-detail-bar .tdb-l { font-family: var(--font-display); font-size: clamp(18px, 1.8vw, 24px); color: var(--text); }
.trn-detail-bar .tdb-r { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--copper-hi); }
.trn-detail-body { padding: clamp(22px, 2.6vw, 38px); }

/* curriculum modules */
.trn-modules { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.trn-mod {
  background: var(--ink-2); padding: clamp(18px, 2vw, 26px);
  display: flex; flex-direction: column; gap: 10px;
}
.trn-mod .tm-head { display: flex; align-items: baseline; gap: 12px; }
.trn-mod .tm-day {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--copper-hi); flex-shrink: 0;
}
.trn-mod h4 { font-family: var(--font-display); font-size: clamp(18px, 1.7vw, 23px); line-height: 1.12; color: var(--text); }
.trn-mod ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 7px; }
.trn-mod ul li {
  font-size: 13.5px; line-height: 1.45; color: var(--text-mute);
  padding-left: 16px; position: relative;
}
.trn-mod ul li::before { content: ''; position: absolute; left: 0; top: 0.6em; width: 6px; height: 6px; border-radius: 50%; background: var(--copper); }
@media (max-width: 760px) { .trn-modules { grid-template-columns: 1fr; } }

/* outcomes strip */
.trn-outcomes {
  margin-top: clamp(20px, 2.4vw, 32px);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.trn-out { background: var(--ink); padding: 18px clamp(16px, 1.8vw, 24px); display: flex; flex-direction: column; gap: 6px; }
.trn-out .to-v { font-family: var(--font-display); font-size: clamp(22px, 2.2vw, 30px); color: var(--copper-hi); line-height: 1; }
.trn-out .to-k { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-mute); }
@media (max-width: 700px) { .trn-outcomes { grid-template-columns: 1fr 1fr; } }

/* collaboration note */
.trn-note {
  margin-top: clamp(18px, 2vw, 26px);
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
  color: var(--text-dim); line-height: 1.6;
  border-left: 2px solid var(--copper); padding-left: 16px;
}
.trn-note strong { color: var(--text-mute); font-weight: 500; }

/* reveal fallback */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } .trn-track:hover { transform: none; } }