/* ========================================
   WireTrade — Course Detail Page
   Public-facing course data with prerequisite chain
   ======================================== */

.detail-page {
  background: var(--bg);
  min-height: 100vh;
}

/* ---- HERO ---- */
.detail-hero {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  border-bottom: 1px solid var(--trace);
  align-items: stretch;
}

.detail-hero-inner {
  padding: clamp(56px, 10vh, 96px) clamp(24px, 7vw, 80px);
  padding-right: clamp(40px, 5vw, 80px);
  border-right: 1px solid var(--trace);
}

.detail-breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--steel);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.detail-breadcrumb a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}
.detail-breadcrumb a:hover {
  color: var(--fg);
}
.breadcrumb-sep {
  margin: 0 8px;
  color: var(--steel);
  opacity: 0.5;
}

.detail-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.5vw, 68px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 20px;
}

.detail-desc {
  font-size: clamp(15px, 1.3vw, 18px);
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 32px;
}

.detail-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.tier-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 2px;
}

.detail-hours {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 6px 14px;
  letter-spacing: 0.04em;
  border-radius: 2px;
}

.detail-status {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 2px;
  border: 1px solid;
}
.detail-status--live {
  color: #22c55e;
  border-color: rgba(34, 197, 94, 0.3);
  background: rgba(34, 197, 94, 0.08);
}
.detail-status--draft {
  color: var(--steel);
  border-color: rgba(107, 107, 115, 0.3);
  background: transparent;
}

.detail-lesson-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
  letter-spacing: 0.06em;
}

/* ---- CTA PANEL ---- */
.detail-cta-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(48px, 8vh, 96px) clamp(40px, 5vw, 80px);
}

.detail-cta-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
}

.detail-cta-track {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--trace);
}

.detail-cta-track-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.detail-cta-track-name {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--fg-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-cta-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.detail-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--bg);
  background: var(--accent);
  padding: 16px 32px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  width: 100%;
}
.detail-cta:hover {
  background: #ff7029;
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(255, 92, 26, 0.3);
}

.detail-cta--disabled {
  background: var(--bg-alt);
  color: var(--steel);
  cursor: not-allowed;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.detail-cta--disabled:hover {
  background: var(--bg-alt);
  transform: none;
  box-shadow: none;
}

.detail-cta-note {
  font-size: 12px;
  color: var(--fg-muted);
  line-height: 1.5;
  text-align: center;
}

/* ---- PREREQUISITES ---- */
.detail-prereqs {
  padding: clamp(48px, 8vh, 80px) clamp(24px, 7vw, 112px);
  border-bottom: 1px solid var(--trace);
  background: var(--bg-alt);
}

.detail-prereqs-inner {
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.detail-prereqs-help {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
  max-width: 600px;
  margin-bottom: 8px;
}

.detail-prereqs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.prereq-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.prereq-pill:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.prereq-pill-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.prereq-pill-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--steel);
  letter-spacing: 0.04em;
}

/* ---- LESSONS ---- */
.detail-lessons {
  padding: clamp(64px, 10vh, 100px) clamp(24px, 7vw, 112px);
}

.detail-lessons-inner {
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.detail-lessons-heading {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.8vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 8px;
}

.detail-lessons-empty {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--steel);
  padding: 36px 0;
}

.detail-lessons-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.detail-lesson-row {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.detail-lesson-row:hover {
  border-color: var(--trace);
  background: var(--bg-card-hover);
}

.detail-lesson-num {
  width: 48px;
  flex-shrink: 0;
}

.detail-lesson-num-text {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--steel);
  letter-spacing: 0.05em;
}

.detail-lesson-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.detail-lesson-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.detail-lesson-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.detail-lesson-duration {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--steel);
  letter-spacing: 0.05em;
}

/* ---- ENROLLED STATE: row link + completion checkmark ---- */
.detail-page a.detail-lesson-row {
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 20px;
}
.detail-page a.detail-lesson-row:hover {
  border-color: var(--accent);
}

.detail-page .detail-lesson-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  margin-right: 10px;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: transparent;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.08);
  vertical-align: middle;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.detail-page .detail-lesson-check--done {
  color: #22c55e;
  background: rgba(34, 197, 94, 0.12);
  border-color: rgba(34, 197, 94, 0.35);
}

/* ---- MOBILE ---- */
@media (max-width: 900px) {
  .detail-hero {
    grid-template-columns: 1fr;
  }
  .detail-hero-inner {
    border-right: none;
    border-bottom: 1px solid var(--trace);
    padding-right: clamp(24px, 7vw, 112px);
  }
  .detail-cta-panel {
    padding: clamp(40px, 6vh, 56px) clamp(24px, 7vw, 112px);
  }
}

@media (max-width: 640px) {
  .detail-hero-inner {
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .detail-meta {
    gap: 10px;
  }
  .detail-cta-card {
    padding: 28px 24px;
  }
  .detail-lessons {
    padding: 48px 24px;
  }
  .detail-lesson-row {
    padding: 14px 18px;
    gap: 14px;
  }
  .detail-prereqs {
    padding: 36px 24px;
  }
  .prereq-pill {
    padding: 8px 14px;
  }
  .prereq-pill-title {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .detail-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}