/* ==========================================================================
   Gaya Tampilan Pembaca Materi (Material Reader)
   Sesuai Antislop: Bebas Slop, Aksesibel WCAG AA, Ramah Siswa SMP
   ========================================================================== */

/* Tata Letak Utama Reader */
.reader-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: calc(100vh - 130px);
  gap: var(--space-6);
  padding-top: var(--space-2);
  padding-bottom: var(--space-8);
}

/* Sidebar Navigasi Materi */
.reader-sidebar {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  height: fit-content;
  position: sticky;
  top: var(--space-4);
}

.reader-sidebar-head,
.reader-sidebar .sidebar-header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-4);
}

.material-title-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background-color: #f0fdf4;
  border: 1px solid #bbf7d0;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.material-main-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.35;
}

/* Progress Capaian Belajar */
.progress-container {
  margin-top: var(--space-3);
  margin-bottom: var(--space-2);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.progress-track {
  width: 100%;
  height: 8px;
  background-color: var(--color-surface-subtle);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.progress-fill {
  height: 100%;
  background-color: var(--color-primary);
  width: 0%;
  transition: width 0.3s ease;
}

/* Daftar Bab dan Topik */
.chapter-group {
  margin-bottom: var(--space-4);
}

.chapter-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  padding-left: var(--space-2);
}

.topic-list {
  list-style: none;
}

.topic-item {
  margin-bottom: var(--space-1);
}

.topic-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  min-height: 44px; /* Target sentuh minimum */
  transition: background-color 0.15s ease, color 0.15s ease;
  border: 1px solid transparent;
}

.topic-link:hover {
  background-color: var(--color-surface-subtle);
  color: var(--color-text-primary);
}

.topic-link.is-active {
  background-color: #f0fdf4;
  color: var(--color-primary);
  font-weight: 600;
  border-color: #bbf7d0;
}

.topic-status-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-left: var(--space-2);
}

.topic-status-icon .ui-icon {
  width: 14px;
  height: 14px;
}

/* Konten Utama Pembaca Materi */
.reader-article {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  max-width: 800px;
}

.article-header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-6);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.article-title {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.3;
}

/* Teks Bacaan Tipografi Nyaman */
.article-body {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: #1e293b;
}

.article-body h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-surface-subtle);
  padding-bottom: var(--space-1);
}

.article-body h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.article-body p {
  margin-bottom: var(--space-4);
}

.article-body ul, 
.article-body ol {
  margin-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.article-body li {
  margin-bottom: var(--space-2);
}

.article-body strong {
  color: var(--color-text-primary);
  font-weight: 700;
}

/* Kotak Konsep Terkait */
.concepts-section {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.concepts-heading {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.concepts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-3);
}

.concept-card {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.concept-card-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.concept-card-desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
}

/* Aksi Progress dan Navigasi */
.reader-actions {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.btn-complete-reading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
  transition: background-color 0.15s ease;
}

.btn-complete-reading:hover {
  background-color: var(--color-primary-hover);
}

.btn-complete-reading.is-done {
  background-color: #15803d;
}

.nav-buttons-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
}

.btn-nav-topic {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.btn-nav-topic:hover:not(:disabled) {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-border-hover);
}

.btn-nav-topic:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Penyesuaian Responsif Mobile (antislop-layoutmobile) */
@media (max-width: 840px) {
  .reader-layout {
    grid-template-columns: 1fr;
  }

  .reader-sidebar {
    position: relative;
    top: 0;
  }

  .reader-article {
    padding: var(--space-4);
  }

  .article-title {
    font-size: 1.5rem;
  }
}

/* ==========================================================================
   Easy Learn Summary Mode Styles
   Sesuai panduan design-taste-frontend dan antislop-ui
   ========================================================================== */

.reading-mode-selector {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: var(--space-1);
  margin-top: var(--space-4);
  max-width: 100%;
}

.mode-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 40px;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.mode-tab:hover:not(.is-active) {
  color: var(--color-text-primary);
  background-color: rgba(255, 255, 255, 0.6);
}

.mode-tab.is-active {
  background-color: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.mode-tab:active {
  transform: translateY(1px);
}

/* Kontainer Ringkasan Adaptif */
.summary-body {
  margin-bottom: var(--space-8);
}

.summary-core-card {
  background-color: #f0fdfa;
  border: 1px solid #99f6e4;
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.summary-core-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: #ccfbf1;
  color: var(--color-primary);
  flex-shrink: 0;
}

.summary-core-icon .ui-icon {
  width: 20px;
  height: 20px;
}

.section-icon,
.value-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.summary-core-content h2 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.summary-core-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Bagian Poin Kunci */
.summary-section {
  margin-bottom: var(--space-6);
}

.summary-section-heading {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.summary-points-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.summary-point-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.summary-point-card:hover {
  transform: translateX(2px);
  border-color: var(--color-border-hover);
  border-left-color: var(--color-primary-hover);
}

.summary-point-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  flex-wrap: wrap;
}

.summary-point-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
}

.summary-concept-badge {
  font-size: var(--font-size-xs);
  font-family: var(--font-family-mono);
  font-weight: 600;
  background-color: var(--color-surface-subtle);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 2px 8px;
}

.summary-point-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Kartu Profil Tokoh Sejarah */
.figures-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

@media (max-width: 640px) {
  .figures-grid {
    grid-template-columns: 1fr;
  }
}

.figure-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.figure-name {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.figure-role {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  display: inline-block;
}

.figure-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: 1.45;
}

/* Nilai Karakter Kebangsaan */
.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

@media (max-width: 640px) {
  .values-grid {
    grid-template-columns: 1fr;
  }
}

.value-card {
  background-color: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}

.value-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.value-meaning {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: 1.45;
}