:root {
  --accent: #6c5ce7;
  --accent-hover: #5a4bd6;
  --accent-light: #eef2ff;
  --bs-primary: #6c5ce7;
  --bs-primary-rgb: 108, 92, 231;
  --bs-body-color: #1a1a2e;
  --bs-secondary-color: #6b6b80;
  --bs-border-color: #e0e0e8;
  font-size: 17px;
}

body { font-family: 'Inter', -apple-system, sans-serif; -webkit-font-smoothing: antialiased; }

.navbar-brand { color: var(--accent) !important; }

.btn-primary {
  --bs-btn-bg: var(--accent);
  --bs-btn-border-color: var(--accent);
  --bs-btn-hover-bg: var(--accent-hover);
  --bs-btn-hover-border-color: var(--accent-hover);
  --bs-btn-active-bg: var(--accent-hover);
  --bs-btn-active-border-color: var(--accent-hover);
}

.bg-primary-subtle { background-color: var(--accent-light) !important; }
.text-primary { color: var(--accent) !important; }

/* Nav */
.nav-course-title { font-size: 0.9rem; }
.nav-course-title:hover { color: var(--accent) !important; }

/* Course cards – horizontal layout */
.course-card-h {
  display: flex;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.5rem;
  overflow: hidden;
  background: #fff;
  transition: box-shadow 0.15s;
}
.course-card-h:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }

.course-banner {
  width: 140px;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.course-initial {
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
}

.course-info {
  flex: 1;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.course-title { font-size: 1.05rem; font-weight: 600; margin: 0; }
.course-desc {
  font-size: 0.85rem;
  color: var(--bs-secondary-color);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.course-meta { font-size: 0.8rem; color: var(--bs-secondary-color); }

.course-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
  padding-top: 0.5rem;
}
.course-progress-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  max-width: 280px;
}
.course-pct { font-size: 0.75rem; color: var(--bs-secondary-color); white-space: nowrap; }

/* Course tabs */
.course-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--bs-border-color);
  margin-bottom: 1.25rem;
}
.course-tab {
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--bs-secondary-color);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.course-tab:hover { color: var(--bs-body-color); }
.course-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.course-tab-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.35rem;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 999px;
  background: var(--bs-border-color);
  color: var(--bs-secondary-color);
  margin-left: 0.3rem;
}
.course-tab.active .course-tab-count {
  background: var(--accent-light);
  color: var(--accent);
}
.course-tab-panel { display: none; }
.course-tab-panel.active { display: block; }

/* Setup phase courses */
.setup-section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--bs-secondary-color);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.setup-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.5rem;
  background: #fff;
}
.setup-card-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}
.setup-card-topic {
  font-weight: 500;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.setup-card-status {
  font-size: 0.78rem;
  color: var(--bs-secondary-color);
}

/* Icon buttons for archive/delete actions */
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: none;
  border-radius: 0.375rem;
  background: transparent;
  color: var(--bs-secondary-color);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.btn-icon:hover { background: var(--bs-light); color: var(--bs-body-color); }
.btn-icon-danger:hover { background: #fef2f2; color: var(--bs-danger); }

.course-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.15s;
  margin-left: 0.5rem;
  flex-shrink: 0;
}
.course-card-h:hover .course-actions { opacity: 1; }
.setup-card:hover .btn-icon { opacity: 1; }
.setup-card .btn-icon { opacity: 0; transition: opacity 0.15s; }

/* Archived section */
.archived-section {
  border-top: 1px solid var(--bs-border-color);
  padding-top: 1rem;
}
.archived-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.5rem 0;
  background: none;
  border: none;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--bs-secondary-color);
  font-weight: 600;
  cursor: pointer;
}
.archived-toggle:hover { color: var(--bs-body-color); }
.archived-chevron {
  font-size: 1.1rem;
  line-height: 1;
}
.archived-list {
  display: none;
  padding-top: 0.5rem;
}
.archived-list.open { display: flex; flex-direction: column; gap: 0.35rem; }
.archived-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.5rem;
  background: #fafafa;
}
.archived-card-info {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}
.archived-card-title {
  font-size: 0.88rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--bs-secondary-color);
}
.archived-card-meta {
  font-size: 0.72rem;
  color: #adb5bd;
}

@media (max-width: 576px) {
  .course-card-h { flex-direction: column; }
  .course-banner { width: 100%; min-height: 80px; }
  .course-actions { opacity: 1; }
  .setup-card .btn-icon { opacity: 1; }
}

/* Course overview */
.progress-ring {
  width: 80px;
  height: 80px;
  border: 3px solid var(--accent);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.progress-ring-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--bs-secondary-color);
}

.module-number {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
}

.progress-thin { height: 4px; }

.course-modules { }

/* ===== Course overview – accordion ===== */

.course-resume {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  background: var(--accent-light);
  border: 1px solid #c7d2fe;
  border-radius: 0.5rem;
  margin-bottom: 2.5rem;
}
.course-resume .btn-primary {
  padding: 0.5rem 1.5rem;
  font-weight: 600;
}

.course-complete {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 0.5rem;
  margin-bottom: 2.5rem;
}
.course-complete-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.course-complete .btn-primary {
  padding: 0.5rem 1.5rem;
  font-weight: 600;
  white-space: nowrap;
}

.module-accordion { display: flex; flex-direction: column; }

.module-row {
  border: 1px solid var(--bs-border-color);
  border-left: 3px solid #d1d5db;
}
.module-row + .module-row { border-top: none; }
.module-row.mod-done { border-left-color: var(--bs-success); }
.module-row.mod-current { border-left-color: var(--accent); }

.module-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
}
.module-header:hover { background: var(--bs-light); }

.mod-check {
  width: 26px;
  height: 26px;
  border: 2px solid #d1d5db;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.8rem;
  color: transparent;
}
.mod-check.done {
  background: var(--bs-success);
  border-color: var(--bs-success);
  color: white;
}

.mod-title { flex: 1; font-weight: 600; font-size: 0.95rem; }

.mod-toggle {
  font-size: 1.25rem;
  color: var(--bs-secondary-color);
  width: 24px;
  text-align: center;
  flex-shrink: 0;
  line-height: 1;
}

.module-body {
  display: none;
  padding: 0 1.25rem 1rem 3.75rem;
}
.module-row.mod-open .module-body { display: block; }

.module-lesson {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
}
.module-lesson a:hover { color: var(--accent) !important; }

.lesson-check {
  width: 18px;
  height: 18px;
  border: 2px solid #d1d5db;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.6rem;
  color: transparent;
}
.lesson-check.done {
  background: var(--bs-success);
  border-color: var(--bs-success);
  color: white;
}

/* ===== Lesson page ===== */

.lesson-container { min-height: calc(100vh - 56px); }

.lesson-main { padding-bottom: 2rem; max-width: 50rem; margin: 0 auto; }
.lesson-title { font-size: 1.75rem; margin-bottom: 2rem; margin-top: 2rem; }

/* Lesson breadcrumb */
.lesson-topbar {
  position: sticky;
  top: 56px;
  background: #fff;
  z-index: 10;
  margin: 0 -12px;
  padding: 0 12px;
}
.lesson-breadcrumb { font-size: 1rem; }

/* Outline panel toggle */
.outline-toggle { cursor: pointer; line-height: 1; }
.outline-toggle svg { vertical-align: middle; }
#lesson-body { display: block; }
#lesson-body.outline-open { display: grid; grid-template-columns: 1fr 52rem; }
.outline-panel { display: none; padding: 0.75rem 0; }
.outline-open .outline-panel {
  display: block;
  border-right: 1px solid var(--bs-border-color);
  overflow-y: auto;
}
.outline-open .lesson-main { margin: 0; padding-left: 2rem; }
.outline-dot {
  width: 14px;
  height: 14px;
  border: 2px solid #d1d5db;
  border-radius: 50%;
  flex-shrink: 0;
}
.outline-dot.done {
  background: var(--bs-success);
  border-color: var(--bs-success);
}
.outline-lessons a:hover { color: var(--accent) !important; }

/* Block display */
.block { display: none; }
.block.block-active { display: block; }
.block.block-active + .block.block-active { margin-top: 3rem; }

/* Text blocks */
.block-text { line-height: 1.75; }
.block-text h2 { font-size: 1.5rem; font-weight: 700; margin: 3.5rem 0 1.25rem; padding-top: 1.5rem; border-top: 1px solid #e5e5e5; }
.block-text h2:first-child { margin-top: 0.5rem; padding-top: 0; border-top: none; }
.block-text h3 { font-size: 1.15rem; font-weight: 600; margin: 2rem 0 1rem; }
.block-text h3:first-child { margin-top: 0.5rem; }
.block-text h4 { font-size: 1.05rem; font-weight: 600; margin: 1.5rem 0 0.75rem; }
.block-text p { margin-bottom: 0.75rem; color: var(--bs-secondary-color); }
.block-text ul, .block-text ol { margin: 0.5rem 0 1rem; color: var(--bs-secondary-color); }
.block-text ol { padding-left: 2.5rem; }
.block-text ul { padding-left: 2.5rem; }
.block-text li { margin-bottom: 0.4rem; padding-left: 0.25rem; }
.block-text li > ul, .block-text li > ol { margin-top: 0.4rem; margin-bottom: 0.25rem; }
.block-text strong { color: var(--bs-body-color); font-weight: 600; }
.block-text code {
  background: var(--bs-light);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.88em;
}
.block-text pre {
  background: #f8f8fa;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0 2.5rem;
  font-family: inherit;
  font-size: 1rem;
  white-space: pre-wrap;
  color: var(--bs-body-color);
}
.block-text pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-family: inherit;
  font-size: inherit;
}
.block-text blockquote {
  border-left: 3px solid var(--accent);
  background: var(--accent-light);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0 2.5rem;
  border-radius: 0 6px 6px 0;
  color: var(--bs-secondary-color);
}
.block-text blockquote p:last-child { margin-bottom: 0; }

/* Quiz */
.block-quiz {
  background: var(--bs-light);
  border: 1px solid var(--bs-border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
}
.quiz-question { font-weight: 500; font-size: 0.95rem; margin-bottom: 1rem; line-height: 1.5; }
.quiz-question strong { font-weight: 700; }
.quiz-options { display: grid; gap: 0.5rem; }
.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.75rem 1rem;
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.5rem;
  color: var(--bs-secondary-color);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
  line-height: 1.5;
  transition: border-color 0.1s, background 0.1s;
}
.quiz-option:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-light); color: var(--bs-body-color); }
.quiz-option:disabled { cursor: default; }
.quiz-option.correct { border-color: var(--bs-success); background: var(--bs-success-bg-subtle); color: var(--bs-success); font-weight: 500; }
.quiz-option.incorrect { border-color: var(--bs-danger); background: var(--bs-danger-bg-subtle); color: var(--bs-danger); }
.quiz-explanation { display: none; margin-top: 1.25rem; padding: 1rem 0 0; border-top: 1px solid var(--bs-border-color); font-size: 0.88rem; color: var(--bs-secondary-color); line-height: 1.7; }
.quiz-explanation.visible { display: block; }
.quiz-explanation p { margin-bottom: 0.5rem; }
.quiz-explanation ul { margin: 0.5rem 0 0.5rem 1.25rem; }
.quiz-explanation li { margin-bottom: 0.4rem; }
.quiz-explanation strong { color: var(--bs-body-color); }

/* Fill-blank */
.block-fill-blank {
  background: var(--bs-light);
  border: 1px solid var(--bs-border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
}
.fill-prompt { margin-bottom: 0.75rem; line-height: 2.2; font-size: 0.95rem; }
.fill-input {
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-bottom: 2px solid var(--accent);
  border-radius: 4px;
  color: var(--bs-body-color);
  padding: 0.3rem 0.5rem;
  font-family: inherit;
  font-size: 0.88rem;
  width: 150px;
}
.fill-input:focus { outline: none; border-color: var(--accent); }
.fill-input:disabled { opacity: 0.7; border-bottom-color: var(--bs-border-color); }
.fill-feedback { display: none; margin-top: 0.75rem; font-size: 0.88rem; font-weight: 500; }
.fill-feedback.visible { display: block; }

/* Reflection */
.block-reflection {
  background: var(--bs-light);
  border: 1px solid var(--bs-border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
}
.reflection-prompt { font-weight: 600; font-size: 0.95rem; margin-bottom: 0.75rem; line-height: 1.5; }
.reflection-keypoints {
  display: none;
  margin-top: 0.75rem;
  padding: 1rem 1.25rem;
  background: #fff;
  border-radius: 0.5rem;
  font-size: 0.88rem;
  border-left: 3px solid var(--bs-success);
}
.reflection-keypoints.visible { display: block; }
.reflection-keypoints p { font-weight: 600; margin-bottom: 0.5rem; }
.reflection-keypoints ul { margin: 0 0 0 1.25rem; }
.reflection-keypoints li { margin-bottom: 0.4rem; color: var(--bs-secondary-color); line-height: 1.5; }

/* ===== New course page ===== */

.new-course-wrap {
  max-width: 640px;
  margin: 4rem auto;
  text-align: center;
}
.new-course-heading {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.new-course-sub {
  color: var(--bs-secondary-color);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

/* Course type selector */
.type-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  text-align: left;
}
.type-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.25rem;
  border: 2px solid var(--bs-border-color);
  border-radius: 0.5rem;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  font-family: inherit;
}
.type-card:hover { border-color: var(--accent); }
.type-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(80, 70, 229, 0.12);
}
.type-card-label { font-weight: 600; font-size: 0.95rem; }
.type-card-desc { font-size: 0.8rem; color: var(--bs-secondary-color); }
.type-card-time { font-size: 0.75rem; color: var(--bs-secondary-color); margin-top: 0.25rem; }

@media (max-width: 480px) {
  .type-selector { grid-template-columns: 1fr; }
}

.new-course-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.new-course-textarea {
  font-size: 1rem;
  resize: vertical;
  min-height: 80px;
  text-align: left;
}
.new-course-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 0.2rem rgba(80, 70, 229, 0.15);
}
.new-course-btn {
  align-self: flex-end;
  padding: 0.6rem 2rem;
  font-weight: 600;
  background: var(--accent);
  border-color: var(--accent);
}
.new-course-btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* ===== Loading page ===== */

.loading-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  text-align: center;
}
.loading-message {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.loading-timer {
  font-size: 0.85rem;
}
.loading-error {
  margin-top: 1.5rem;
}
.spinner-dots {
  display: flex;
  gap: 6px;
  margin-bottom: 1.5rem;
}
.spinner-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  animation: dot-pulse 1.2s ease-in-out infinite;
}
.spinner-dots span:nth-child(2) { animation-delay: 0.2s; }
.spinner-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dot-pulse {
  0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
  40% { opacity: 1; transform: scale(1); }
}

/* ===== Assessment page ===== */

.assessment-wrap {
  max-width: 780px;
  margin: 0 auto;
}
.assessment-header {
  margin-bottom: 2rem;
}
.assessment-question {
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: border-color 0.15s;
}
.assessment-question.unanswered {
  border-color: var(--bs-danger);
}
.question-number {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bs-secondary-color);
  margin-bottom: 0.5rem;
}
.question-text {
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}
.question-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.question-option {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.88rem;
  line-height: 1.5;
  transition: border-color 0.1s, background 0.1s;
}
.question-option:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}
.question-option input[type="radio"] {
  display: none;
}
.question-option input[type="radio"]:checked + .option-letter {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.question-option:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-light);
}
.option-letter {
  width: 24px;
  height: 24px;
  border: 2px solid var(--bs-border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 600;
  flex-shrink: 0;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}
.option-text {
  color: var(--bs-secondary-color);
  padding-top: 1px;
}
.assessment-footer {
  text-align: center;
  padding: 1.5rem 0 2rem;
}
.assessment-hint {
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

/* Score interstitial */
.score-interstitial {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 40vh;
  text-align: center;
  animation: fadeIn 0.4s ease;
}
.score-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1rem;
}
.score-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.score-label {
  font-size: 0.85rem;
  color: var(--bs-secondary-color);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.score-message {
  font-size: 1rem;
  color: var(--bs-secondary-color);
  max-width: 400px;
  margin-bottom: 1.5rem;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Syllabus page ===== */

.syllabus-wrap {
  max-width: 780px;
  margin: 0 auto;
}
.syllabus-header {
  margin-bottom: 2rem;
}
.syllabus-desc {
  color: var(--bs-secondary-color);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}
.syllabus-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
}
.syllabus-modules {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.syllabus-module {
  border: 1px solid var(--bs-border-color);
  padding: 1.25rem 1.5rem;
}
.syllabus-module + .syllabus-module {
  border-top: none;
}
.syllabus-module:first-child {
  border-radius: 0.5rem 0.5rem 0 0;
}
.syllabus-module:last-child {
  border-radius: 0 0 0.5rem 0.5rem;
}
.syllabus-module:only-child {
  border-radius: 0.5rem;
}
.syllabus-module-header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.syllabus-module-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}
.syllabus-module-desc {
  font-size: 0.85rem;
  color: var(--bs-secondary-color);
  margin: 0.25rem 0 0;
}
.syllabus-lessons {
  list-style: none;
  padding: 0;
  margin: 0 0 0 2.25rem;
}
.syllabus-lesson {
  padding: 0.35rem 0;
  font-size: 0.88rem;
  color: var(--bs-secondary-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.syllabus-lesson::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bs-border-color);
  flex-shrink: 0;
}
.syllabus-footer {
  text-align: center;
  padding: 2rem 0;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--bs-border-color);
  font-size: 0.8rem;
  color: var(--bs-secondary-color);
}

/* Auth */
.auth-body {
  background: #f8f9fa;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.auth-container {
  width: 100%;
  max-width: 400px;
  padding: 1rem;
}
.auth-card {
  background: white;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.auth-logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.25rem;
}
.auth-title {
  font-size: 1.1rem;
  font-weight: 500;
  text-align: center;
  color: var(--bs-secondary-color);
  margin-bottom: 1.5rem;
}
.auth-error {
  background: #fef2f2;
  color: #b91c1c;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}
.auth-message {
  background: #f0fdf4;
  color: #166534;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}
.auth-switch {
  text-align: center;
  font-size: 0.875rem;
  color: var(--bs-secondary-color);
  margin-top: 1.25rem;
  margin-bottom: 0;
}

/* Course type badge */
.course-type-badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  display: inline-block;
}
.course-type-badge.type-standard {
  background: var(--accent-light);
  color: var(--accent);
}
.course-type-badge.type-primer {
  background: #ecfdf5;
  color: #059669;
}

/* AI Disclaimer */
.ai-disclaimer {
  color: var(--bs-secondary-color);
  font-size: 0.7rem;
  padding: 0.25rem 0;
  margin-top: 0.5rem;
}

/* Content Flag */
.block {
  position: relative;
}
.flag-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  background: none;
  border: none;
  color: var(--bs-secondary-color);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
  padding: 4px;
  border-radius: 4px;
}
.block:hover .flag-btn,
.flag-btn:focus {
  opacity: 0.6;
}
.flag-btn:hover {
  opacity: 1;
  background: #f3f4f6;
}
.flag-btn.flagged {
  opacity: 0.5;
  color: #dc2626;
  cursor: default;
}
.flag-dropdown {
  position: absolute;
  top: 28px;
  right: 4px;
  background: white;
  border: 1px solid var(--bs-border-color);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  z-index: 10;
  overflow: hidden;
}
.flag-option {
  display: block;
  width: 100%;
  padding: 0.5rem 1rem;
  border: none;
  background: none;
  text-align: left;
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
}
.flag-option:hover {
  background: #f3f4f6;
}

/* Share Modal */
.share-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1050;
  justify-content: center;
  align-items: center;
}
.share-modal-backdrop.show {
  display: flex;
}
.share-modal {
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem;
  width: 100%;
  max-width: 480px;
  margin: 1rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

/* Share Preview Page */
.shared-preview {
  max-width: 640px;
  padding: 2.5rem 2rem;
  border: 1px solid var(--bs-border-color);
  border-radius: 12px;
  background: #fff;
}
.shared-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: #f0f4ff;
  color: #4361ee;
  font-size: 0.8rem;
  font-weight: 600;
}
.shared-info {
  padding: 0.75rem;
  border-radius: 8px;
  background: #f8f9fa;
}

.mod-review-link {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  margin-left: auto;
  margin-right: 0.5rem;
  flex-shrink: 0;
}
.mod-review-link:hover { text-decoration: underline; }

/* Module Review */
.review-stats {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.review-stat {
  flex: 1;
  padding: 1rem 1.25rem;
  border-radius: 10px;
  background: var(--accent-light);
  text-align: center;
}
.review-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}
.review-stat-label {
  font-size: 0.78rem;
  color: var(--bs-secondary-color);
  margin-top: 0.15rem;
}
.review-summary {
  padding: 1.25rem;
  border-radius: 10px;
  background: #f8f9fa;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
}
.review-summary p { margin: 0; }
.review-section {
  margin-bottom: 1.5rem;
}
.review-section-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.review-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.review-list li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border-left: 3px solid transparent;
}
.review-strengths li {
  background: #f0fdf4;
  border-left-color: #22c55e;
}
.review-gaps li {
  background: #fef2f2;
  border-left-color: #ef4444;
}
.review-concept {
  font-weight: 600;
  font-size: 0.88rem;
}
.review-detail {
  font-size: 0.88rem;
  color: var(--bs-secondary-color);
}
.review-suggestion {
  font-size: 0.82rem;
  color: var(--accent);
  font-style: italic;
}
.review-readiness {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 10px;
  margin-bottom: 1.5rem;
}
.review-readiness-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.review-readiness-ready {
  background: #f0fdf4;
}
.review-readiness-ready .review-readiness-icon {
  background: #22c55e;
  color: #fff;
}
.review-readiness-needs-review {
  background: #fffbeb;
}
.review-readiness-needs-review .review-readiness-icon {
  background: #f59e0b;
  color: #fff;
}
.review-lesson-links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.review-lesson-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  background: #f8f9fa;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: background 0.15s;
}
.review-lesson-link:hover {
  background: var(--accent-light);
}
.review-lesson-link::before {
  content: "\2190";
  font-size: 0.8rem;
}
.review-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 1rem;
}
.review-loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--bs-border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: review-spin 0.8s linear infinite;
}
@keyframes review-spin {
  to { transform: rotate(360deg); }
}
/* Responsive */
@media (max-width: 768px) {
  #lesson-body.outline-open { grid-template-columns: 1fr; }
  .outline-open .outline-panel { border-right: none; border-bottom: 1px solid var(--bs-border-color); }
  .review-stats { flex-direction: column; gap: 0.75rem; }
}