/* ============================================================
   XYZ Lab – course.css  (course detail page styles)
   ============================================================ */

/* ---------- Course Hero ---------- */
.course-hero {
  background: linear-gradient(135deg, #f0fdfb 0%, #fffdf4 100%);
  padding: 5rem 0 4rem;
  overflow: hidden;
}

.course-hero-inner {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 4rem;
  align-items: start;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--mid);
  transition: color var(--transition), gap var(--transition);
  margin-bottom: .5rem;
}
.back-link:hover { color: var(--primary); gap: .65rem; }

.course-hero-text h1 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.03em;
  margin: .5rem 0 1.25rem;
}

.course-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.5rem;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .38rem .9rem;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--dark-2);
}

/* Sticky enrol card */
.course-hero-card {
  position: sticky;
  top: 88px;
}

.preview-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
}

.preview-icon {
  margin-bottom: 1.25rem;
}

.preview-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.build-list {
  display: flex;
  flex-direction: column;
  gap: .65rem;
  margin-bottom: 1.75rem;
}
.build-list li {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-size: .9rem;
  color: var(--dark-2);
  font-weight: 500;
}
.dot {
  width: 7px;
  height: 7px;
  min-width: 7px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
}

.preview-cta { border-top: 1px solid var(--border); padding-top: 1.5rem; }
.preview-note {
  text-align: center;
  font-size: .8rem;
  color: var(--mid);
  margin-top: .75rem;
}
.preview-note a { color: var(--primary); font-weight: 600; }

/* ---------- Outcomes ---------- */
.outcomes {
  padding: 6rem 0;
  background: var(--white);
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.outcome-card {
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.outcome-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
  transform: translateY(-3px);
}
.outcome-icon {
  font-size: 1.8rem;
  margin-bottom: .9rem;
  display: block;
}
.outcome-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .5rem;
  color: var(--dark);
}
.outcome-card p {
  font-size: .875rem;
  color: var(--mid);
  line-height: 1.6;
}

/* ---------- For Who ---------- */
.for-who {
  padding: 6rem 0;
  background: var(--light);
}

.for-who-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.for-who-text h2 {
  font-size: clamp(1.8rem, 2.8vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -.02em;
}
.for-who-text > p {
  color: var(--mid);
  margin-bottom: 2rem;
}

.for-who-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.fw-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.fw-card:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.fw-card > span { font-size: 1.5rem; line-height: 1; }
.fw-card strong { display: block; font-size: .92rem; font-weight: 700; margin-bottom: .2rem; }
.fw-card p { font-size: .83rem; color: var(--mid); margin: 0; }

/* Code window */
.code-window {
  background: #0d1b2a;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  font-family: 'Courier New', Courier, monospace;
}
.code-titlebar {
  background: #1e2d3d;
  padding: .7rem 1rem;
  display: flex;
  align-items: center;
  gap: .45rem;
}
.dot-r { width:12px;height:12px;border-radius:50%;background:#ff5f57;display:inline-block; }
.dot-y { width:12px;height:12px;border-radius:50%;background:#febc2e;display:inline-block; }
.dot-g { width:12px;height:12px;border-radius:50%;background:#28c840;display:inline-block; }
.code-filename { margin-left:.5rem; font-size:.78rem; color:rgba(255,255,255,.4); font-family:var(--font); }
.code-body {
  padding: 1.5rem;
  font-size: .82rem;
  line-height: 1.8;
  color: rgba(255,255,255,.85);
}
.token-comment { color: #6a9955; }
.token-string  { color: #ce9178; }
.token-keyword { color: #569cd6; }
.token-var     { color: #9cdcfe; }
.token-fn      { color: #dcdcaa; }
.token-key     { color: #9cdcfe; }

/* ---------- Curriculum ---------- */
.curriculum {
  padding: 6rem 0;
  background: var(--white);
}

.curriculum-list {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  max-width: 800px;
  margin: 0 auto;
}

.module {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.module[open] {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(8,191,173,.1);
}

.module-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.5rem;
  cursor: pointer;
  list-style: none;
  background: var(--white);
  user-select: none;
  transition: background var(--transition);
}
.module-summary::-webkit-details-marker { display: none; }
.module-summary:hover { background: var(--light); }

.module-num {
  font-size: .75rem;
  font-weight: 800;
  color: var(--primary);
  min-width: 28px;
}
.module-title {
  flex: 1;
  font-size: .97rem;
  font-weight: 600;
  color: var(--dark);
}
.module-meta {
  font-size: .78rem;
  color: var(--mid);
  white-space: nowrap;
}
.module-chevron {
  font-size: 1.2rem;
  color: var(--mid);
  transition: transform var(--transition);
}
.module[open] .module-chevron { transform: rotate(180deg); }

/* Always-expanded module variant (no accordion) */
.module-flat {
  border-color: var(--primary);
}
.module-flat .module-summary {
  cursor: default;
  padding: 1.1rem 1.5rem;
}

.module-body {
  padding: .25rem 1.5rem 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--light);
}
.module-body ul {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding-top: 1rem;
}
.module-body li {
  font-size: .88rem;
  color: var(--mid);
  padding-left: 1.2rem;
  position: relative;
}
.module-body li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: .8rem;
}

/* ---------- Tools ---------- */
.tools-section {
  padding: 5rem 0;
  background: var(--light);
}

.tools-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  justify-content: center;
  max-width: 700px;
  margin: 0 auto;
}

.tool-pill {
  padding: .55rem 1.3rem;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: 50px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--dark-2);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  cursor: default;
}
.tool-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* ---------- Other courses ---------- */
.other-courses {
  padding: 5rem 0;
  background: var(--light);
}

.courses-grid--3 {
  grid-template-columns: repeat(3, 1fr) !important;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1000px) {
  .course-hero-inner {
    grid-template-columns: 1fr;
  }
  .course-hero-card {
    position: static;
    max-width: 480px;
  }
  .outcomes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .for-who-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 700px) {
  .course-hero { padding: 3rem 0; }
  .outcomes-grid { grid-template-columns: 1fr; }
  .outcomes { padding: 4rem 0; }
  .for-who { padding: 4rem 0; }
  .curriculum { padding: 4rem 0; }
  .module-summary { flex-wrap: wrap; }
  .module-meta { width: 100%; padding-left: calc(28px + 1rem); font-size: .75rem; }
  .courses-grid--3 { grid-template-columns: 1fr !important; }
  .other-courses { padding: 4rem 0; }
}