/* ==========================================================================
   Portal Homepage Styles (index.html) - Zero Overflow & Clean Responsive Layout
   ========================================================================== */

.portal-hero {
  padding: 48px 0 28px;
  text-align: center;
  background: radial-gradient(1000px 400px at 50% 0%, rgba(37, 99, 235, 0.05), transparent 70%);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden !important;
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-xs);
  margin-bottom: 16px;
  max-width: 95%;
}

.hero-pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--emerald);
  flex-shrink: 0;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.portal-title {
  font-size: clamp(1.9rem, 4.2vw, 3.2rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.18;
  letter-spacing: -0.035em;
  max-width: 860px;
  margin: 0 auto 14px;
  word-break: break-word !important;
  overflow-wrap: break-word !important;
}

.portal-title .accent-text {
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary) 0%, #1d4ed8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.portal-lede {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 28px;
  line-height: 1.65;
  word-break: break-word;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

@media (max-width: 540px) {
  .portal-hero {
    padding: 36px 0 24px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

/* Syllabus & Lesson Cards */
.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 12px;
  flex-wrap: wrap;
  width: 100%;
}

.section-title-group h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.section-title-group p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.module-group {
  margin-bottom: 24px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.module-header-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
  user-select: none;
  gap: 12px;
  width: 100% !important;
  box-sizing: border-box !important;
}

.module-header-card:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-hover);
}

.module-header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.module-header-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.module-header-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
  word-break: break-word;
}

.module-header-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  word-break: break-word;
}

.module-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.module-toggle-arrow {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
}

.module-group.open .module-toggle-arrow {
  transform: rotate(180deg);
}

.module-body {
  margin-top: 10px;
  display: none;
  animation: fadeIn 0.2s ease-out;
  width: 100% !important;
  box-sizing: border-box !important;
}

.module-group.open .module-body {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Lessons Grid */
.lessons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  width: 100% !important;
  box-sizing: border-box !important;
}

@media (max-width: 600px) {
  .module-header-card {
    padding: 14px 16px;
    flex-direction: column;
    align-items: flex-start;
  }
  .module-header-right {
    width: 100%;
    justify-content: space-between;
    padding-top: 8px;
    border-top: 1px solid var(--divider);
  }
  .lessons-grid {
    grid-template-columns: 1fr !important;
  }
}

.lesson-item-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
  width: 100% !important;
  box-sizing: border-box !important;
}

.lesson-item-card:hover {
  border-color: var(--primary);
  background-color: var(--bg-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.lesson-num-badge {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.lesson-item-card:hover .lesson-num-badge {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: rgba(37, 99, 235, 0.2);
}

.lesson-item-card.completed .lesson-num-badge {
  background-color: var(--emerald-light);
  color: var(--emerald);
  border-color: var(--emerald-border);
}

.lesson-card-content {
  flex: 1;
  min-width: 0;
}

.lesson-card-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 3px;
  line-height: 1.35;
  word-break: break-word !important;
}

.lesson-item-card:hover .lesson-card-title {
  color: var(--primary);
}

.lesson-card-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

.lesson-status-check {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--emerald);
  font-weight: bold;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.lesson-item-card.completed .lesson-status-check {
  opacity: 1;
}

/* Roadmap */
.roadmap-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  margin-bottom: 48px;
  box-shadow: var(--shadow-xs);
  width: 100% !important;
  box-sizing: border-box !important;
}

.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  position: relative;
  margin-top: 24px;
  width: 100% !important;
  box-sizing: border-box !important;
}

@media (max-width: 900px) {
  .roadmap-timeline {
    grid-template-columns: 1fr !important;
  }
}

.roadmap-step {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  transition: all var(--transition-fast);
  box-sizing: border-box !important;
  width: 100%;
}

.roadmap-step:hover {
  background-color: var(--bg-surface);
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.roadmap-step-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.roadmap-step-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.roadmap-step-desc {
  font-size: 0.76rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Topic Highlight Styling on Portal */
[data-topic] .module-header-card {
  border-left: 3px solid var(--primary);
}

[data-topic] .lesson-num-badge {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary-border);
}

[data-topic] .lesson-item-card:hover {
  border-color: var(--primary);
  background-color: var(--bg-hover);
}

[data-topic] .lesson-item-card:hover .lesson-card-title {
  color: var(--primary);
}

[data-topic] .module-header-card:hover {
  border-color: var(--primary);
}