/* The Return Period: course page styles (moved from foundation/index.html) */
.course-hero { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%); color: #fff; padding: 56px 24px 48px; border-bottom: 2px solid var(--amber); }
.course-hero-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.course-hero-text { flex: 1; min-width: 280px; }
.course-hero-text .breadcrumb { font-family: var(--font-mono); font-size: 0.72rem; color: var(--amber); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 12px; }
.course-hero-text .breadcrumb a { color: var(--amber); text-decoration: none; }
.course-hero h1 { font-family: var(--font-display); font-size: clamp(1.8rem,3.5vw,2.4rem); margin-bottom: 12px; }
.course-hero p { color: rgba(255,255,255,0.65); line-height: 1.7; max-width: 520px; margin-bottom: 20px; font-size: 0.95rem; }
.course-stats { display: flex; gap: 28px; flex-wrap: wrap; }
.course-stat { text-align: center; }
.course-stat-val { font-family: var(--font-display); font-size: 1.6rem; font-weight: 900; color: var(--teal-lt); display: block; }
.course-stat-lbl { font-family: var(--font-mono); font-size: 0.68rem; color: rgba(255,255,255,0.45); text-transform: uppercase; letter-spacing: 0.1em; }

.progress-panel-hero { background: rgba(255,255,255,0.07); border-radius: var(--radius); padding: 20px 24px; min-width: 220px; }
.progress-panel-hero h4 { font-size: 0.78rem; color: rgba(255,255,255,0.5); font-family: var(--font-mono); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.1em; }
.hero-prog-bar { height: 8px; background: rgba(255,255,255,0.12); border-radius: 4px; overflow: hidden; margin-bottom: 8px; }
.hero-prog-fill { height: 100%; background: var(--teal-lt); border-radius: 4px; transition: width 0.6s ease; }
.hero-prog-pct { font-family: var(--font-mono); font-size: 0.85rem; color: var(--teal-lt); margin-bottom: 14px; }
.start-course-btn { display: inline-flex; align-items: center; gap: 8px; background: var(--amber); color: var(--navy); font-weight: 700; font-size: 0.9rem; padding: 12px 24px; border-radius: var(--radius); text-decoration: none; transition: var(--transition); }
.start-course-btn:hover { background: var(--amber-lt); }

.course-body { padding: 56px 24px 80px; }
.container { max-width: 860px; margin: 0 auto; }

/* PREREQUISITE BANNER */
.prereq-banner { background: rgba(0,168,120,0.06); border: 1.5px solid rgba(0,168,120,0.2); border-left: 4px solid var(--teal); border-radius: var(--radius-lg); padding: 18px 24px; margin-bottom: 44px; display: flex; align-items: flex-start; gap: 14px; }
.prereq-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.prereq-text { font-size: 0.84rem; color: var(--text); line-height: 1.7; }
.prereq-text strong { color: var(--navy); display: block; margin-bottom: 4px; font-size: 0.9rem; }
.prereq-text a { color: var(--teal); font-weight: 600; text-decoration: none; }
.prereq-text a:hover { text-decoration: underline; }

/* MODULE BLOCKS */
.module-block { margin-bottom: 44px; }
.module-block-header { display: flex; align-items: center; gap: 16px; padding-bottom: 16px; margin-bottom: 18px; border-bottom: 2px solid var(--border); }
.module-block-icon { width: 44px; height: 44px; flex-shrink: 0; border-radius: 10px; background: linear-gradient(135deg, var(--navy), var(--slate)); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.module-block-header h2 { font-family: var(--font-display); font-size: 1.2rem; color: var(--navy); flex: 1; }
.module-block-header span { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted); white-space: nowrap; }
.module-desc { font-size: 0.84rem; color: var(--text-muted); line-height: 1.65; margin-bottom: 16px; padding: 0 2px; }

/* LESSON ROWS */
.lessons-list { display: flex; flex-direction: column; gap: 10px; }
.lesson-row { display: flex; align-items: center; gap: 16px; background: #fff; border: 1.5px solid var(--border); border-radius: var(--radius); padding: 14px 20px; text-decoration: none; color: var(--text); transition: var(--transition); }
.lesson-row:hover { border-color: var(--teal); box-shadow: var(--shadow); transform: translateX(4px); }
.lesson-row-num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted); min-width: 36px; }
.lesson-row-body { flex: 1; }
.lesson-row-title { font-weight: 600; font-size: 0.9rem; color: var(--navy); display: block; margin-bottom: 2px; }
.lesson-row-sub { font-size: 0.78rem; color: var(--text-muted); line-height: 1.4; }
.lesson-row-tag { font-family: var(--font-mono); font-size: 0.65rem; padding: 3px 10px; border-radius: 12px; background: var(--off-white); color: var(--slate); white-space: nowrap; }
.lesson-row-check { width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 0.65rem; color: var(--text-muted); flex-shrink: 0; }
.lesson-row-check.done { background: var(--success); border-color: var(--success); color: #fff; }

/* UNLOCKS BADGE on lessons that feed directly into Intermediate */
.unlock-tag { font-family: var(--font-mono); font-size: 0.63rem; color: var(--teal); background: rgba(0,168,120,0.08); border: 1px solid rgba(0,168,120,0.2); padding: 2px 8px; border-radius: 10px; margin-left: 8px; white-space: nowrap; }

/* DIVIDER */
.module-divider { border: none; border-top: 1.5px dashed var(--border); margin: 8px 0 44px; }

/* ASSESSMENT BLOCK */
.assessment-block { background: linear-gradient(135deg, var(--navy), var(--slate)); border-radius: var(--radius-lg); padding: 28px 32px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-top: 8px; }
.assessment-block h3 { font-family: var(--font-display); font-size: 1.1rem; color: #fff; margin-bottom: 4px; }
.assessment-block p { font-size: 0.82rem; color: rgba(255,255,255,0.55); margin: 0; }
.assessment-btn { display: inline-flex; align-items: center; gap: 8px; background: var(--amber); color: var(--navy); font-weight: 700; font-size: 0.85rem; padding: 11px 22px; border-radius: var(--radius); text-decoration: none; transition: var(--transition); }
.assessment-btn:hover { background: var(--amber-lt); }

/* NEXT STEP CALLOUT */
.next-step { background: var(--off-white); border: 1.5px solid var(--border); border-radius: var(--radius-lg); padding: 24px 28px; margin-top: 32px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.next-step-text h4 { font-family: var(--font-display); font-size: 1.05rem; color: var(--navy); margin-bottom: 5px; }
.next-step-text p { font-size: 0.83rem; color: var(--text-muted); line-height: 1.6; margin: 0; }
.btn-next { display: inline-flex; align-items: center; gap: 8px; background: var(--navy); color: #fff; font-weight: 700; font-size: 0.85rem; padding: 11px 22px; border-radius: var(--radius); text-decoration: none; transition: var(--transition); white-space: nowrap; }
.btn-next:hover { background: var(--teal); }

@media (max-width: 640px) {
  .course-stats { gap: 16px; }
  .module-block-icon { display: none; }
  .lesson-row-sub { display: none; }
  .unlock-tag { display: none; }
}
  

/* Added for the platform version */
.progress-panel-hero { flex: 0 0 auto; max-width: 280px; padding: 18px 22px; }
.progress-panel-hero h4 { margin-bottom: 8px; }
.progress-panel-hero .hero-panel-note { font-size: 0.8rem; color: rgba(255,255,255,0.6); line-height: 1.55; margin: 0 0 14px; max-width: none; }
.progress-panel-hero .hero-panel-note a { color: var(--teal-lt); font-weight: 600; text-decoration: none; }
.progress-panel-hero .hero-panel-note a:hover { text-decoration: underline; }
.progress-panel-hero .start-course-btn { padding: 9px 18px; font-size: 0.84rem; }
.free-tag { font-family: var(--font-mono); font-size: 0.63rem; font-weight: 700; color: var(--teal); background: rgba(0,168,120,0.08); border: 1px solid rgba(0,168,120,0.2); padding: 2px 8px; border-radius: 10px; margin-left: 8px; text-transform: uppercase; letter-spacing: 0.06em; vertical-align: middle; }