/* ── LESSON PAGE STYLES ─────────────────────────────────────────── */

/* Content Area */
.content {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  height: fit-content;
}

.content-header {
  padding: 2rem 2.5rem 1.5rem;
  border-bottom: 1px solid var(--border-light);
  background: linear-gradient(135deg, var(--brand-lighter) 0%, var(--panel) 100%);
}

.content-title {
  font-weight: 700;
  color: var(--brand-dark);
  font-size: clamp(1.75rem, 2.5vw, 2.25rem);
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

.content-subtitle {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.content-description {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.content-body {
  padding: 2rem 2.5rem;
}

.content-placeholder {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-light);
}

.content-placeholder-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  opacity: 0.5;
}

/* Lesson Content */
.lesson-content {
  animation: fadeIn 0.3s ease-out;
}

.lesson-content h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--text);
}

.lesson-content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

.lesson-content p {
  margin-bottom: 1.5rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Lesson Actions */
.lesson-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
}

.course-complete {
  color: var(--success);
  font-weight: 600;
  font-size: 1.1rem;
}

/* Video Wrapper */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  margin: 2rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ── RESPONSIVE DESIGN ─────────────────────────────────────────── */

@media (max-width: 1024px) {
  .content {
    order: 1;
  }
}

@media (max-width: 768px) {
  .content-header {
    padding: 1.5rem 1.5rem 1rem;
  }
  
  .content-body {
    padding: 1.5rem;
  }
}