/* Course view / editor */
.course-page {
  min-height: calc(100vh - 78px);
  background:
    radial-gradient(circle at top left, rgba(125, 151, 184, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(193, 219, 232, 0.12), transparent 25%),
    #fff1b5;
}

.course-shell {
  width: 100%;
  max-width: none;
  margin: 0;
  display: flex;
  gap: 0;
  align-items: stretch;
}

.course-sidebar,
.course-main-card,
.course-editor-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(107, 70, 52, 0.08);
}

.course-sidebar {
  flex: 0 0 320px;
  width: 320px;
  position: sticky;
  top: 78px;
  min-height: calc(100vh - 78px);
  max-height: calc(100vh - 78px);
  overflow: auto;
  border-radius: 0;
  border-top: 0;
  border-left: 0;
  border-bottom: 0;
  box-shadow: none;
  padding: 30px 26px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
}

.course-sidebar h2 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  line-height: 1.2;
}

.course-sidebar p {
  color: var(--muted);
  margin-bottom: 28px;
  font-size: 0.94rem;
}

.module-nav {
  display: grid;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid rgba(107, 70, 52, 0.08);
}

.add-module-sidebar-btn {
  width: 100%;
  min-height: 52px;
  margin-top: 12px;
  border: 1px dashed rgba(193, 219, 232, 0.36);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--coral);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.add-module-sidebar-btn:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}


.course-main {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  display: grid;
  gap: 24px;
  padding: 42px min(5vw, 70px) 70px;
  transition: max-width 0.32s ease, padding 0.32s ease, margin 0.32s ease;
}

.course-main-card,
.course-editor-card {
  width: 100%;
  border-radius: 26px;
  padding: 34px;
  box-shadow: var(--shadow-soft);
  transition: width 0.32s ease, max-width 0.32s ease, padding 0.32s ease, border-radius 0.32s ease;
}

.course-header-card {
  display: block;
}

.course-module-card {
  display: block;
}

.course-topline {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.course-topline h1 {
  font-size: clamp(2.3rem, 4vw, 4rem);
}

.course-description,
.module-text-display {
  color: var(--muted);
  white-space: pre-wrap;
}

.module-content-box {
  margin-top: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: 0;
}

.module-content-box h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 16px;
}

.module-card-topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.module-card-topline h2 {
  margin-bottom: 0;
}

.course-editor-card {
  display: none;
}

.course-editor-card.active {
  display: block;
}

.course-editor-form {
  display: grid;
  gap: 18px;
}

.form-group textarea {
  width: 100%;
  min-height: 150px;
  padding: 16px 18px;
  border-radius: 16px;
  border: 1px solid rgba(107, 70, 52, 0.12);
  background: rgba(255,255,255,0.9);
  font: inherit;
  color: var(--text);
  outline: none;
  resize: vertical;
}

.form-group textarea:focus {
  border-color: var(--coral);
  box-shadow: 0 0 0 4px rgba(193, 219, 232, 0.12);
}

.editor-actions,
.module-editor-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.empty-course-state {
  padding: 20px;
  border-radius: 18px;
  background: rgba(255,255,255,0.65);
  color: var(--muted);
}

@media (max-width: 900px) {
  .course-shell {
    display: block;
  }

  .course-sidebar {
    position: static;
    min-height: auto;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid rgba(107, 70, 52, 0.08);
  }

  .course-main {
    padding: 30px 20px 54px;
  }
}

@media (max-width: 680px) {
  .course-main-card,
  .course-editor-card,
  .course-sidebar {
    padding: 20px;
  }

  .course-main-card,
  .course-editor-card {
    border-radius: 24px;
  }

  .editor-actions .btn,
  .module-editor-actions .btn {
    width: 100%;
  }
}

/* Embedded sidebar collapse control */
.course-shell {
  position: relative;
}

.course-sidebar {
  transition:
    flex-basis 0.32s ease,
    width 0.32s ease,
    opacity 0.24s ease,
    transform 0.32s ease,
    padding 0.32s ease,
    border-color 0.32s ease;
}

.course-sidebar-toggle {
  position: fixed;
  top: 50%;
  left: 301px;
  z-index: 20;
  width: 38px;
  height: 52px;
  border: 1px solid rgba(107, 70, 52, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--brown);
  box-shadow: var(--shadow-soft);
  font: inherit;
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  transition: transform 0.24s ease, box-shadow 0.24s ease, left 0.32s ease;
}

.course-sidebar-toggle:hover {
  transform: translateY(calc(-50% - 2px));
  box-shadow: var(--shadow);
}

.course-shell.sidebar-collapsed .course-sidebar {
  flex-basis: 0;
  width: 0;
  opacity: 0;
  transform: translateX(-100%);
  padding-left: 0;
  padding-right: 0;
  border-right: 0;
  pointer-events: none;
  overflow: hidden;
}

.course-shell.sidebar-collapsed .course-sidebar-toggle {
  left: 18px;
}

.course-shell.sidebar-collapsed .course-main {
  max-width: 1180px;
  width: 100%;
  margin-inline: auto;
}

@media (max-width: 900px) {
  .course-sidebar-toggle {
    top: 50%;
    left: 16px;
  }

  .course-shell.sidebar-collapsed .course-sidebar {
    display: none;
  }

  .course-shell.sidebar-collapsed .course-main {
    max-width: none;
  }
}

/* Module and submodule navigation */
.module-nav-item {
  border-radius: 14px;
}

.module-nav-item.active > .module-nav-row {
  background: var(--cream-dark);
  color: var(--brown);
}

.module-nav-row {
  display: grid;
  grid-template-columns: 1fr 44px;
  align-items: center;
  border-radius: 14px;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.module-nav-row:hover {
  background: var(--cream-dark);
  color: var(--brown);
  transform: translateX(3px);
}

.module-nav .module-title-btn,
.module-nav .module-expand-btn,
.module-nav .submodule-btn,
.module-nav .add-submodule-btn {
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.module-nav .module-title-btn {
  min-height: 52px;
  padding: 14px 12px 14px 16px;
  border-radius: 14px 0 0 14px;
  font-weight: 800;
  text-align: left;
}

.module-nav .module-expand-btn {
  min-height: 52px;
  border-radius: 0 14px 14px 0;
  color: var(--coral);
  font-size: 1.15rem;
  font-weight: 900;
  display: grid;
  place-items: center;
}

.submodule-list {
  display: grid;
  gap: 6px;
  margin: 6px 0 10px 16px;
  padding-left: 12px;
  border-left: 2px solid rgba(67, 48, 46, 0.35);
}

.module-nav .submodule-btn {
  min-height: 42px;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--soft-brown);
  font-size: 0.92rem;
  font-weight: 700;
  text-align: left;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.module-nav .submodule-btn:hover,
.module-nav .submodule-btn.active {
  background: rgba(223, 232, 242, 0.82);
  color: var(--brown);
  transform: translateX(3px);
}

.empty-submodule-state {
  padding: 10px 12px;
  color: var(--muted);
  font-size: 0.86rem;
}

.module-nav .add-submodule-btn {
  min-height: 42px;
  padding: 10px 12px;
  border: 1px dashed rgba(193, 219, 232, 0.32);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--coral);
  font-size: 0.9rem;
  font-weight: 900;
  text-align: center;
  transition: background 0.2s ease, transform 0.2s ease;
}

.module-nav .add-submodule-btn:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-1px);
}


/* Inline module editor inside the content area */
.inline-module-editor {
  display: none;
  gap: 18px;
}

.inline-module-editor.active {
  display: grid;
}

.inline-module-editor h2 {
  margin-bottom: 4px;
}

/* Block-based module content */
.module-blocks-display {
  display: grid;
  gap: 18px;
  color: var(--muted);
}

.content-video-block,
.content-image-block {
  width: 100%;
  overflow: hidden;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(107, 70, 52, 0.08);
}

.content-video-block iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
}

.content-image-block img {
  display: block;
  width: 100%;
  max-height: 560px;
  object-fit: contain;
}

.empty-block-state {
  color: var(--muted);
}

.content-block-editor-list {
  display: grid;
  gap: 18px;
}

.content-block-editor {
  display: grid;
  gap: 10px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(107, 70, 52, 0.08);
}

.content-block-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.content-block-editor-header strong {
  color: var(--brown);
}

.remove-content-block-btn {
  border: 0;
  background: transparent;
  color: var(--coral);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.content-block-input {
  width: 100%;
  min-height: 54px;
  padding: 14px 18px;
  border-radius: 16px;
  border: 1px solid rgba(107, 70, 52, 0.12);
  background: rgba(255, 255, 255, 0.9);
  font: inherit;
  color: var(--text);
  outline: none;
}

textarea.content-block-input {
  min-height: 150px;
  resize: vertical;
}

.content-block-input:focus {
  border-color: var(--coral);
  box-shadow: 0 0 0 4px rgba(193, 219, 232, 0.12);
}

.add-block-area {
  position: relative;
  display: grid;
  justify-items: start;
  gap: 10px;
}

.add-content-block-btn {
  min-height: 48px;
  padding: 0 22px;
  border: 1px dashed rgba(193, 219, 232, 0.36);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--coral);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.block-type-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(107, 70, 52, 0.08);
  box-shadow: var(--shadow-soft);
}

.block-type-menu[hidden] {
  display: none;
}

.block-type-menu button {
  min-height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: var(--cream-dark);
  color: var(--brown);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

/* Rich text block editor */
.rich-text-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
  padding: 10px;
  border: 1px solid rgba(107, 70, 52, 0.10);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.rich-text-tool-btn {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid rgba(193, 219, 232, 0.18);
  border-radius: 10px;
  background: var(--white);
  color: var(--brown);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 900;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.rich-text-tool-btn:hover {
  background: var(--cream-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.rich-text-input {
  min-height: 180px;
  overflow: auto;
  white-space: normal;
}

.rich-text-input:empty::before {
  content: attr(data-placeholder);
  color: var(--muted);
}

.rich-text-display {
  display: grid;
  gap: 10px;
  white-space: normal;
}

.rich-text-display ul,
.rich-text-display ol,
.rich-text-input ul,
.rich-text-input ol {
  padding-left: 24px;
}

.rich-text-display h3,
.rich-text-input h3 {
  font-family: "Playfair Display", Georgia, serif;
  color: var(--brown);
  font-size: 1.6rem;
  line-height: 1.2;
}

/* Quiz submodules */
.submodule-add-choice {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.quiz-question-editor {
  display: grid;
  gap: 18px;
}

.quiz-question-editor[hidden] {
  display: none;
}

.quiz-editor-topline,
.quiz-question-editor-header,
.quiz-option-editor-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.quiz-editor-topline h3 {
  margin: 0;
  color: var(--brown);
}

.quiz-question-editor-list {
  display: grid;
  gap: 16px;
}

.quiz-question-editor-card,
.quiz-question {
  display: grid;
  gap: 14px;
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(107, 70, 52, 0.08);
}

.quiz-question-type,
.quiz-question-prompt,
.quiz-option-text,
.quiz-written-answer {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(107, 70, 52, 0.12);
  background: rgba(255, 255, 255, 0.92);
  font: inherit;
  color: var(--text);
  outline: none;
}

.quiz-question-type {
  max-width: 220px;
}

.quiz-question-prompt,
.quiz-written-answer {
  min-height: 120px;
  resize: vertical;
}

.quiz-option-editor-list,
.quiz-options,
.student-quiz {
  display: grid;
  gap: 12px;
}

.quiz-option-editor-row {
  padding: 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.62);
}

.quiz-correct-toggle,
.quiz-option {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--soft-brown);
  font-weight: 700;
}

.quiz-option {
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(107, 70, 52, 0.08);
}

.quiz-result {
  font-weight: 900;
  color: var(--brown);
}

@media (max-width: 680px) {
  .submodule-add-choice {
    grid-template-columns: 1fr;
  }

  .quiz-question-type {
    max-width: none;
  }
}


/* === THICHA PAGE STYLE OVERRIDES === */
.course-page {
  background:
    linear-gradient(135deg, rgba(193, 219, 232, 0.38), transparent 34%),
    #c1dbe8;
}

.course-sidebar,
.course-main-card,
.course-editor-card,
.content-block-editor,
.quiz-question-editor-card,
.quiz-question,
.quiz-option,
.content-video-block,
.content-image-block,
.block-type-menu,
.rich-text-toolbar {
  background: var(--white);
  border: 1px solid var(--line-strong);
  box-shadow: none;
}

.course-sidebar {
  background: #fffaf0;
  border-right: 1px solid var(--brown);
}

.course-sidebar h2,
.course-topline h1,
.module-content-box h2,
.inline-module-editor h2,
.rich-text-display h3,
.rich-text-input h3 {
  font-family: "Inter", system-ui, sans-serif;
  color: var(--brown);
  font-weight: 900;
}

.module-nav-item.active > .module-nav-row,
.module-nav-row:hover,
.module-nav .submodule-btn:hover,
.module-nav .submodule-btn.active {
  background: var(--cream-dark);
  color: var(--brown);
  transform: none;
}

.module-nav .module-title-btn,
.module-nav .submodule-btn {
  font-weight: 900;
}

.module-nav .module-expand-btn,
.remove-content-block-btn {
  color: var(--brown);
}

.course-sidebar-toggle,
.block-type-menu button,
.rich-text-tool-btn {
  background: var(--cream-dark);
  color: var(--brown);
  border: 1px solid var(--brown);
  box-shadow: none;
}

.module-nav .add-submodule-btn,
.add-module-sidebar-btn,
.add-content-block-btn {
  background: var(--white);
  color: var(--brown);
  border: 1px dashed var(--brown);
}

.content-block-input.rich-text-input,
.rich-text-input {
  background: var(--white);
}

.quiz-result {
  color: var(--brown);
}

/* File material blocks */
.content-file-block {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--white);
  border: 1px solid var(--line-strong);
  color: var(--brown);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.content-file-block:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 0 rgba(67, 48, 46, 0.12);
}

.content-file-block span {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  min-width: 54px;
  min-height: 40px;
  border-radius: 12px;
  background: var(--cream-dark);
  border: 1px solid var(--brown);
  color: var(--brown);
  font-size: 0.78rem;
  font-weight: 900;
}

.content-file-block strong {
  flex: 1 1 auto;
  min-width: 0;
  overflow-wrap: anywhere;
}

.content-file-block small,
.current-file-note {
  color: var(--muted);
  font-weight: 700;
}

.file-block-input {
  padding-top: 15px;
}

/* Custom drag-and-drop file uploader */
.file-upload-dropzone {
  display: grid;
  place-items: center;
  gap: 10px;
  min-height: 150px;
  padding: 26px;
  border: 2px dashed var(--brown);
  border-radius: 20px;
  background: var(--white);
  color: var(--brown);
  text-align: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.file-upload-dropzone:hover,
.file-upload-dropzone.drag-over {
  background: var(--cream-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 0 rgba(67, 48, 46, 0.12);
}

.file-upload-dropzone .file-block-input {
  display: none;
}

.file-upload-icon {
  display: grid;
  place-items: center;
  min-width: 64px;
  min-height: 46px;
  border-radius: 14px;
  background: var(--coral);
  border: 1px solid var(--brown);
  color: var(--brown);
  font-size: 0.82rem;
  font-weight: 900;
}

.file-upload-dropzone strong {
  color: var(--brown);
  font-size: 1.05rem;
}

.file-upload-note {
  max-width: 100%;
  color: var(--muted);
  font-weight: 700;
  overflow-wrap: anywhere;
}

/* Quiz question audio upload and player */
.quiz-audio-editor {
  display: grid;
  gap: 10px;
}

.quiz-audio-editor > strong {
  color: var(--brown);
}

.quiz-audio-dropzone {
  min-height: 118px;
  padding: 20px;
}

.quiz-audio-dropzone .quiz-audio-input {
  display: none;
}

.quiz-audio-remove-btn {
  justify-self: start;
}

.quiz-audio-player {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 16px;
  background: var(--white);
  border: 1px solid var(--line-strong);
}

.quiz-audio-player strong {
  color: var(--brown);
  overflow-wrap: anywhere;
}

.quiz-audio-player audio {
  width: 100%;
}


/* Correct hidden editor sections */
.content-block-editor-list[hidden],
.add-block-area[hidden] {
  display: none !important;
}


/* Previous / next navigation below each course part */
.course-navigation-card[hidden] {
  display: none;
}

.course-navigation-card {
  padding: 24px;
}

.course-part-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.part-nav-btn,
.part-nav-empty {
  min-height: 76px;
  border-radius: 18px;
}

.part-nav-btn {
  display: grid;
  gap: 4px;
  align-content: center;
  padding: 16px 18px;
  border: 1px dashed var(--brown);
  background: var(--white);
  color: var(--brown);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.part-nav-btn:hover {
  background: var(--cream-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 0 rgba(67, 48, 46, 0.12);
}

.part-nav-btn span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.part-nav-btn strong {
  color: var(--brown);
  font-size: 1.05rem;
  overflow-wrap: anywhere;
}

.course-part-navigation .part-nav-btn:last-child {
  text-align: right;
}

@media (max-width: 680px) {
  .course-part-navigation {
    grid-template-columns: 1fr;
  }

  .part-nav-empty {
    display: none;
  }

  .course-part-navigation .part-nav-btn:last-child {
    text-align: left;
  }
}

.site-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

@media (max-width:900px){
  .course-sidebar{
    position:fixed !important;
    top:78px !important;
    left:0 !important;
    width:min(340px,85vw) !important;
    height:calc(100vh - 78px) !important;
    z-index:1001 !important;
  }

  .course-shell.sidebar-collapsed .course-sidebar{
    display:block !important;
    transform:translateX(-100%) !important;
    opacity:0 !important;
    pointer-events:none !important;
  }

  .course-shell:not(.sidebar-collapsed) .course-sidebar{
    transform:translateX(0) !important;
    opacity:1 !important;
    pointer-events:auto !important;
  }
}


@media (max-width:900px){
  .course-sidebar-toggle{
    position:fixed !important;
    top:50% !important;
    left:calc(min(340px,85vw) - 19px) !important;
    z-index:3000 !important;
  }

  .course-shell.sidebar-collapsed .course-sidebar-toggle{
    left:12px !important;
  }
}

/* Course info editor */
.course-info-editor {
  display: grid;
  gap: 16px;
  margin-top: 22px;
  padding: 22px;
  border-radius: 20px;
  background: var(--white);
  border: 1px solid var(--line-strong);
}

.course-info-editor[hidden] {
  display: none !important;
}

.course-info-editor input,
.course-info-editor textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--white);
  color: var(--brown);
  font: inherit;
}

.course-info-editor textarea {
  min-height: 110px;
  resize: vertical;
}

.course-info-editor input:focus,
.course-info-editor textarea:focus {
  outline: none;
  border-color: var(--brown);
  box-shadow: 0 0 0 4px rgba(193, 219, 232, 0.45);
}