/* =========================================================
   LEARNING PAGE
   ========================================================= */

.learning-layout {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.learning-card {
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 28px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.learning-dropdown-content {
  display: none;
  padding: 0 20px 20px;
}

.learning-dropdown.open .learning-dropdown-content {
  display: block;
}

/* =========================================================
   COURSE PREVIEW
   ========================================================= */

.learning-course-preview {
  cursor: pointer;
}

.learning-course-cover {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 420px;
  overflow: hidden;
  background: #d9d9d9;
}

.learning-course-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(1.02);
}

.learning-course-badge {
  position: absolute;
  top: 18px;
  left: 18px;
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.learning-course-body {
  padding: 22px 24px 24px;
}

.learning-course-body h3 {
  margin: 0 0 14px;
  font-size: 28px;
  line-height: 1.2;
}

.learning-course-text {
  margin: 0 0 18px;
  max-width: 760px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.learning-course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 18px;
}

.learning-course-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.learning-course-meta-item svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.learning-open-btn {
  margin-top: 10px;
  width: fit-content;
}

/* =========================================================
   LEARNING CONTENT
   ========================================================= */

.learning-video {
  margin-bottom: 16px;
}

.learning-content h3 {
  margin: 0 0 12px;
  font-size: 22px;
}

.lesson-desc {
  margin-bottom: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
  line-height: 1.5;
  font-size: 14px;
}

.learning-lessons {
  margin-top: 10px;
}

.lesson-list-title {
  margin: 0 0 12px;
  font-size: 16px;
}

.lesson-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lesson-item {
  all: unset;
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: 0.2s ease;
  font-size: 14px;
  color: var(--text);
}

.lesson-item:hover {
  background: rgba(255, 255, 255, 0.07);
}

.lesson-item.active {
  color: #fff;
  background: rgba(79, 70, 229, 0.2);
  border-color: rgba(99, 102, 241, 0.35);
}

.video-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  overflow: hidden;
  margin-bottom: 16px;
  border-radius: 20px;
}

.video-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 960px) {
  .learning-layout {
    flex-direction: column;
  }

  .learning-course-cover {
    height: 300px;
    aspect-ratio: auto;
    max-height: none;
  }

  .learning-course-body h3 {
    font-size: 24px;
  }
}

@media (max-width: 640px) {
  .learning-course-cover {
    height: 220px;
    aspect-ratio: auto;
  }

  .learning-course-badge {
    top: 14px;
    left: 14px;
    font-size: 11px;
    padding: 7px 10px;
  }

  .learning-course-body {
    padding: 18px 16px 16px;
  }

  .learning-course-body h3 {
    font-size: 22px;
  }

  .learning-course-text {
    font-size: 13px;
    line-height: 1.5;
  }

  .learning-course-meta {
    gap: 12px;
  }

  .learning-course-meta-item {
    font-size: 13px;
  }

  .learning-open-btn {
    width: 100%;
  }

  .learning-dropdown-content {
    padding: 0 16px 16px;
  }

  .lesson-desc {
    font-size: 13px;
    line-height: 1.5;
  }
}