/* ============================= */
/* LESSON SYSTEM STYLES          */
/* Uses existing theme variables */
/* ============================= */

/* Breadcrumb Navigation */
.lesson-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.breadcrumb-link {
  color: var(--color-gray-400);
  transition: color 0.25s ease;
}

.breadcrumb-link:hover {
  color: var(--color-blue-300);
}

.breadcrumb-separator {
  color: var(--color-gray-500);
}

.breadcrumb-current {
  color: var(--color-gray-200);
}

/* Lesson Header */
.lesson-header-wrapper {
  max-width: 65rem;
}

.lesson-description {
  margin-top: 1rem;
  color: var(--color-gray-300);
}

.lesson-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.lesson-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-gray-400);
  font-size: 0.95rem;
}

.lesson-meta-item i {
  font-size: 1.1rem;
  color: var(--color-blue-300);
}

/* Lesson Content Wrapper */
.lesson-content-wrapper {
  max-width: 65rem;
}

/* Lesson Parts */
.lesson-part {
  margin-bottom: 4rem;
}

.lesson-part-header {
  margin-bottom: 1.5rem;
}

.lesson-part-number {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: var(--color-dark-300);
  border-radius: 0.25rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-blue-300);
  margin-bottom: 0.75rem;
}

.lesson-part-title {
  margin-top: 0.5rem;
}

.lesson-part-content > * + * {
  margin-top: 1.5rem;
}

.lesson-part-content p {
  color: var(--color-gray-300);
  line-height: 1.7;
}

.lesson-part-content code {
  padding: 0.15rem 0.4rem;
  background-color: var(--color-dark-300);
  border-radius: 0.25rem;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  color: var(--color-blue-200);
}

/* Lesson Boxes (Info, Warning, Success) */
.lesson-box {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: 0.5rem;
  border-left: 4px solid;
  background-color: var(--color-dark-300);
}

.lesson-box-info {
  border-color: var(--color-blue-300);
}

.lesson-box-warning {
  border-color: hsl(45, 80%, 55%);
}

.lesson-box-success {
  border-color: hsl(142, 70%, 45%);
}

.lesson-box-icon {
  flex-shrink: 0;
  font-size: 1.5rem;
}

.lesson-box-info .lesson-box-icon {
  color: var(--color-blue-300);
}

.lesson-box-warning .lesson-box-icon {
  color: hsl(45, 80%, 55%);
}

.lesson-box-success .lesson-box-icon {
  color: hsl(142, 70%, 45%);
}

.lesson-box-content {
  flex: 1;
}

.lesson-box-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-gray-100);
}

.lesson-box-content p {
  margin: 0;
  color: var(--color-gray-300);
}

/* Code Blocks */
.lesson-code {
  background-color: var(--color-dark-200);
  border: 1px solid var(--color-dark-100);
  border-radius: 0.5rem;
  overflow: hidden;
}

.lesson-code-header {
  padding: 0.75rem 1.25rem;
  background-color: var(--color-dark-300);
  border-bottom: 1px solid var(--color-dark-100);
}

.lesson-code-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-gray-400);
  text-transform: uppercase;
}

.lesson-code-block {
  padding: 1.25rem;
  margin: 0;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-gray-200);
}

.lesson-code-block code {
  padding: 0;
  background: none;
  color: inherit;
  font-size: inherit;
}

/* Step-by-step Section */
.lesson-steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.lesson-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.lesson-step-number {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-blue-300);
  color: var(--color-gray-100);
  border-radius: 50%;
  font-weight: 600;
  font-size: 0.9rem;
}

.lesson-step-content {
  flex: 1;
}

.lesson-step-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-gray-100);
}

.lesson-step-content p {
  margin: 0;
  color: var(--color-gray-300);
}

/* Card Grid */
.lesson-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.lesson-card {
  padding: 1.5rem;
  background-color: var(--color-dark-300);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-small);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.lesson-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.lesson-card-header {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-dark-200);
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

.lesson-card-header i {
  font-size: 1.5rem;
  color: var(--color-blue-300);
}

.lesson-card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-gray-100);
}

.lesson-card-text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-gray-300);
  line-height: 1.6;
}

/* Highlight Box */
.lesson-highlight {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background-color: var(--color-dark-400);
  border-radius: 0.75rem;
  border: 2px solid var(--color-blue-300);
}

.lesson-highlight-icon {
  flex-shrink: 0;
  font-size: 1.75rem;
  color: var(--color-blue-300);
}

.lesson-highlight-content {
  flex: 1;
}

.lesson-highlight-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-gray-100);
}

.lesson-highlight-content p {
  margin: 0;
  color: var(--color-gray-300);
}

/* Quote Block */
.lesson-quote {
  padding: 2rem;
  background-color: var(--color-dark-300);
  border-radius: 0.75rem;
  border-left: 4px solid var(--color-blue-300);
}

.lesson-quote-icon {
  font-size: 2rem;
  color: var(--color-blue-300);
  margin-bottom: 1rem;
  opacity: 0.5;
}

.lesson-quote-text {
  font-size: 1.15rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--color-gray-200);
  margin: 0 0 1rem 0;
}

.lesson-quote-author {
  font-size: 0.9rem;
  color: var(--color-gray-400);
  margin: 0;
}

/* Media Block */
.lesson-media {
  margin-block: 2rem;
}

.lesson-media-img {
  width: 100%;
  height: auto;
  border-radius: 0.5rem;
  border: 1px solid var(--color-dark-100);
}

.lesson-media-caption {
  margin-top: 0.75rem;
  text-align: center;
  color: var(--color-gray-400);
  font-style: italic;
}

/* Practice Section */
.lesson-practice {
  padding: 2rem;
  background-color: var(--color-dark-400);
  border-radius: 0.75rem;
  margin-top: 2rem;
}

.lesson-practice-title {
  margin-bottom: 1rem;
  color: var(--color-blue-200);
}

/* Form Styles */
.lesson-form {
  margin-top: 2rem;
}

.lesson-form-group {
  margin-bottom: 1.5rem;
}

.lesson-form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--color-gray-200);
}

.lesson-form-input,
.lesson-form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--color-dark-200);
  border: 1px solid var(--color-dark-100);
  border-radius: 0.375rem;
  color: var(--color-gray-100);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.lesson-form-input:focus,
.lesson-form-textarea:focus {
  outline: none;
  border-color: var(--color-blue-300);
  box-shadow: 0 0 0 3px rgba(78, 150, 222, 0.1);
}

.lesson-form-textarea {
  resize: vertical;
  min-height: 100px;
}

.lesson-form-hint {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-gray-400);
}

.lesson-form-radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.lesson-form-radio {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background-color: var(--color-dark-200);
  border-radius: 0.375rem;
  cursor: pointer;
  transition: background-color 0.25s ease;
}

.lesson-form-radio:hover {
  background-color: var(--color-dark-100);
}

.lesson-form-radio input[type="radio"] {
  width: 1.125rem;
  height: 1.125rem;
  cursor: pointer;
}

.lesson-form-radio span {
  color: var(--color-gray-200);
  font-family: 'Courier New', monospace;
}

.lesson-form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.lesson-form-message {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: 0.375rem;
  margin-top: 1rem;
  font-size: 0.95rem;
}

.lesson-form-success {
  background-color: hsla(142, 70%, 45%, 0.1);
  border: 1px solid hsl(142, 70%, 45%);
  color: hsl(142, 70%, 65%);
}

.lesson-form-error {
  background-color: hsla(0, 70%, 50%, 0.1);
  border: 1px solid hsl(0, 70%, 50%);
  color: hsl(0, 70%, 65%);
}

.lesson-form-message i {
  font-size: 1.25rem;
}

/* Divider */
.lesson-divider {
  height: 1px;
  background-color: var(--color-dark-200);
  margin-block: 3rem;
}

/* Summary Section */
.lesson-summary {
  padding: 2rem;
  background-color: var(--color-dark-400);
  border-radius: 0.75rem;
  margin-top: 2rem;
}

.lesson-summary-title {
  margin-bottom: 1.5rem;
  color: var(--color-gray-100);
}

.lesson-summary-list {
  padding-left: 1.5rem;
}

.lesson-summary-list li {
  margin-block: 0.75rem;
  color: var(--color-gray-300);
  line-height: 1.7;
}

.lesson-summary-list li::marker {
  color: var(--color-blue-300);
}

/* Lesson Navigation (Prev/Next) */
.lesson-navigation {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  max-width: 65rem;
}

.lesson-nav-btn {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.5rem;
  background-color: var(--color-dark-300);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-small);
  transition: all 0.25s ease;
  text-decoration: none;
}

.lesson-nav-btn:hover {
  background-color: var(--color-dark-200);
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.lesson-nav-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-gray-400);
  text-transform: uppercase;
}

.lesson-nav-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-gray-100);
}

.lesson-nav-next {
  text-align: right;
}

.lesson-nav-next .lesson-nav-label {
  justify-content: flex-end;
}

/* Responsive Adjustments */
@media screen and (max-width: 48rem) {
  .lesson-card-grid {
    grid-template-columns: 1fr;
  }

  .lesson-form-actions {
    flex-direction: column;
  }

  .lesson-form-actions .btn {
    width: 100%;
  }

  .lesson-navigation {
    grid-template-columns: 1fr;
  }

  .lesson-nav-next {
    text-align: left;
  }

  .lesson-nav-next .lesson-nav-label {
    justify-content: flex-start;
  }
}

@media screen and (max-width: 36rem) {
  .lesson-step {
    flex-direction: column;
  }

  .lesson-highlight,
  .lesson-box {
    flex-direction: column;
  }

  .lesson-meta {
    gap: 1rem;
  }
}