/* Typing Course layout stylesheet */

.lessons-grid {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (max-width: 768px) {
  .lessons-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

.levels-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.level-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* Card States */
.level-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.level-card.active {
  border-color: var(--primary);
  background: var(--primary-light);
}

.level-card.locked {
  opacity: 0.65;
}

/* Accent side-bars */
.level-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  border-radius: 4px 0 0 4px;
  transition: var(--transition-normal);
}

.level-card.beginner::before { background: var(--color-beginner); }
.level-card.intermediate::before { background: var(--color-intermediate); }
.level-card.advanced::before { background: var(--color-advanced); }

.level-card.active.beginner { border-color: var(--color-beginner); background: var(--color-beginner-light); }
.level-card.active.intermediate { border-color: var(--color-intermediate); background: var(--color-intermediate-light); }
.level-card.active.advanced { border-color: var(--color-advanced); background: var(--color-advanced-light); }

/* Left Icon Wrappers */
.level-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.level-icon-wrapper.beg-color { background: var(--color-beginner-light); color: var(--color-beginner); }
.level-icon-wrapper.int-color { background: var(--color-intermediate-light); color: var(--color-intermediate); }
.level-icon-wrapper.adv-color { background: var(--color-advanced-light); color: var(--color-advanced); }

.level-card.active .level-icon-wrapper {
  background: var(--bg-surface);
}

/* Details typography */
.level-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  background: linear-gradient(135deg, var(--primary) 0%, hsl(200, 85%, 55%) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.level-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

/* Progress bar inside side level cards */
.progress-container {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.progress-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
}

.progress-bar-bg {
  background: var(--border);
  height: 6px;
  border-radius: var(--radius-full);
  overflow: hidden;
  width: 100%;
}

.level-card.active .progress-bar-bg {
  background: rgba(0, 0, 0, 0.05);
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.5s ease;
}

.level-arrow {
  display: flex;
  align-items: center;
  color: var(--text-light);
  height: 44px;
}

.level-arrow svg {
  transition: transform 0.3s ease;
}

.level-card.active .level-arrow {
  color: var(--primary);
}

.level-card.active .level-arrow svg {
  transform: rotate(90deg);
}

.level-card.locked .level-arrow svg {
  transform: none !important;
}

.level-card.active.beginner .level-arrow { color: var(--color-beginner); }
.level-card.active.intermediate .level-arrow { color: var(--color-intermediate); }
.level-card.active.advanced .level-arrow { color: var(--color-advanced); }

/* Right scrolling window container */
.lessons-window {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 520px;
}

.lessons-window-header {
  padding: 1.25rem var(--space-lg);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-surface);
}

.lessons-completion-stats {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-app);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
}

/* List scrolling layout */
.lessons-scroll-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: var(--transition-normal);
}

.lessons-scroll-list::-webkit-scrollbar {
  width: 6px;
}

.lessons-scroll-list::-webkit-scrollbar-track {
  background: transparent;
}

.lessons-scroll-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

/* Individual Lesson Row styling */
.lesson-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  background: var(--bg-surface);
}

.lesson-row:hover {
  transform: translateX(3px);
  border-color: var(--primary-hover);
  box-shadow: var(--shadow-sm);
}

.lesson-row.locked {
  background: var(--bg-app);
  opacity: 0.65;
}

/* ================= TYPING COURSE RESPONSIVE BREAKPOINTS ================= */

/* Laptop L & Desktop (1440px and above) */
@media (min-width: 1440px) {
  .lessons-grid {
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
  }
}

/* Laptop & Tablet Landscape (1024px) */
@media (max-width: 1024px) {
  .lessons-grid {
    grid-template-columns: 1fr 1.6fr;
    gap: 1.25rem;
  }
}

/* Tablet & Mobile (768px and below) - Dropdown Accordion Layout */
@media (max-width: 768px) {
  .lessons-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .lessons-window {
    height: 460px;
    margin-top: 0.25rem;
    margin-bottom: 0.75rem;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
    animation: lessonDropdownExpand 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .level-card {
    padding: var(--space-md);
  }

  .lesson-row {
    padding: 0.65rem var(--space-sm);
  }

  .lesson-row-title {
    font-size: 0.88rem;
  }

  .lesson-action-btn {
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
  }
}

/* Mobile L (425px) */
@media (max-width: 425px) {
  .lessons-window {
    height: 440px;
  }

  .lesson-row {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .lesson-num-badge {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }
}

/* Mobile M (375px) */
@media (max-width: 375px) {
  .lessons-window {
    height: 420px;
  }

  .lessons-window-header {
    padding: 0.85rem 1rem;
  }

  .lessons-completion-stats {
    font-size: 0.72rem;
  }
}

/* Mobile S (320px) */
@media (max-width: 320px) {
  .lessons-window {
    height: 380px;
  }

  .level-title {
    font-size: 0.95rem;
  }

  .level-subtitle {
    font-size: 0.7rem;
  }

  .lesson-row-title {
    font-size: 0.82rem;
  }

  .lesson-action-btn {
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
  }
}

.lesson-row.locked:hover {
  transform: none;
  border-color: var(--border);
  box-shadow: none;
}

.lesson-row.completed {
  border-color: var(--success);
}

/* Badge styling */
.lesson-num-badge {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-app);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  font-family: var(--font-title);
}

.lesson-row.completed .lesson-num-badge {
  background: var(--success-light);
  color: var(--success);
  border-color: var(--success);
}

.lesson-row-title {
  font-size: 0.95rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary) 0%, hsl(200, 85%, 55%) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.lesson-row-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.lesson-row-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Button & Locks action elements */
.lesson-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  background: var(--primary);
  color: white;
  transition: var(--transition-fast);
  font-family: var(--font-title);
}

.lesson-action-btn:hover {
  background: var(--primary-hover);
}

.lesson-action-btn.completed {
  background: var(--success-light);
  color: var(--success);
  border: 1px solid var(--success);
}

.lesson-action-btn.completed:hover {
  background: var(--success);
  color: white;
}

.lesson-lock-badge {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lesson-lock-badge:hover {
  background: var(--text-light);
  color: var(--text-main);
}

@keyframes lessonDropdownExpand {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}