/* Lesson Creator Styles */

:root {
  --lesson-creator-colour: #2c3e50;
  --slide-bg-colour: #3498db;
  --slide-text-colour: #ffffff;

  /* Slide text sizes - consistent across all slide types */
  --text-large: 5cqi; /* Main titles */
  --text-medium: 3cqi; /* Body text, subtitles */
  --text-small: 2cqi; /* Secondary/smaller text */
}

h1 {
  color: var(--slide-text-colour);
}

/* Base shell styles */
.lesson-creator-shell {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 3vmin;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lesson-creator-colour);
}

.lesson-creator-panel {
  width: 100%;
  height: 100%;
  background: var(--white-colour);
  border-radius: 1vmin;
  box-shadow: rgba(0, 0, 0, 0.2) 0 0.1vmin 0.2vmin,
    rgba(0, 0, 0, 0.15) 0 0.35vmin 0.6vmin -0.15vmin;
  display: flex;
  flex-direction: column;
}

/* Lesson builder buttons (used in navigation bar and slide cards) */
.lesson-builder-btn {
  display: flex;
  align-items: center;
  min-width: 10vmin;
  border: 1px solid var(--lesson-creator-colour);
  gap: 1vmin;
  padding: 0.8vmin 1.5vmin;
  border-radius: 0.5vmin;
  background: var(--white-colour);
  color: var(--lesson-creator-colour);
  font-size: 1.25vmin;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.lesson-menu-text {
  margin-bottom: 2vmin;
  text-transform: uppercase;
}

#current-theme-label {
  font-weight: 900;
}

#lesson-menu-button,
#lesson-menu-close {
  border: 1px solid var(--lesson-creator-colour);
  background: var(--white-colour);
}

#lesson-menu-button:hover,
#lesson-menu-close:hover {
  background: var(--lesson-creator-colour);
}

#lesson-menu-button:hover svg,
#lesson-menu-close:hover svg {
  fill: var(--white-colour);
}

#lesson-menu-button svg,
#lesson-menu-close svg {
  fill: var(--lesson-creator-colour);
}

.lesson-builder-btn:hover {
  background: var(--lesson-creator-colour);
  color: white;
}

.lesson-builder-btn svg {
  width: 1.6vmin;
  height: 1.6vmin;
  fill: currentColor;
}

#close-creator-btn:hover {
  background: var(--red-colour);
  border-color: var(--red-colour);
}

/* Slides container */
.slides-container {
  flex: 1;
  overflow-y: auto;
  background-color: var(--light-colour);
  display: flex;
}

.lesson-creator-with-sidebar {
  display: flex;
  gap: 0;
  border-radius: 1vmin;
  overflow: hidden;
}

.lesson-creator-with-sidebar .inline-sidebar {
  flex: 1;
  min-width: 300px;
  overflow: hidden;
  transition: flex 0.3s ease, min-width 0.3s ease;
  display: flex;
  flex-direction: column;
  background: var(--white-colour);
  border-right: 1px solid #eee;
}

.slides-panel {
  flex: 3;
  overflow-y: auto;
  padding: 2vmin;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2vmin;
  transition: flex 0.3s ease;
}

/* Slide card */
.slide-card {
  width: 100%;
  max-width: 1000px;
  height: fit-content;
  flex-shrink: 0;
  background: var(--white-colour);
  border-radius: 1vmin;
  margin-bottom: 2vmin;
  border: none;
  box-shadow: rgba(0, 0, 0, 0.2) 0 0.1vmin 0.2vmin,
    rgba(0, 0, 0, 0.15) 0 0.35vmin 0.6vmin -0.15vmin,
    rgba(0, 0, 0, 0.1) 0 -0.3vmin 0 inset,
    rgba(255, 255, 255, 0.3) 0 0.3vmin 0 inset;
  overflow: hidden;
}

.slide-card.active {
  border: 1px solid var(--lesson-creator-colour);
  box-shadow: rgba(0, 0, 0, 0.3) 0px 3vmin 0.25vmin -1.5vmin,
    rgba(0, 0, 0, 0.1) 0 -0.3vmin 0 inset;
}

/* Slide card header */
.slide-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1vmin 2vmin;
  background: var(--white-colour);
  border-bottom: 1px solid #eee;
  border-top: 1px solid #fff;
}

/* Slide name group in header */
.slide-card-header .slide-name-group {
  display: flex;
  align-items: center;
  gap: 0.5vmin;
  flex: 1;
  min-width: 0;
}

.slide-card-header .slide-number {
  font-size: 1.8vmin;
  font-weight: 700;
  color: var(--lesson-creator-colour);
  flex-shrink: 0;
}

.slide-card-header .slide-name-input {
  flex: 1;
  min-width: 0;
  border: 1px solid transparent;
  background: transparent;
  font-size: 1.75vmin;
  font-weight: 600;
  color: var(--lesson-creator-colour);
  padding: 1vmin;
  border-radius: 0.25vmin;
  transition: all 0.2s ease;
}

.slide-card-header .slide-name-input:hover {
  background: rgba(0, 0, 0, 0.03);
}

.slide-card-header .slide-name-input:focus {
  outline: none;
  border-color: var(--lesson-creator-colour);
  background: var(--white-colour);
}

.slide-card-header .slide-name-input::placeholder {
  color: var(--grey-colour);
  font-weight: 400;
  opacity: 0.5;
}

.slide-card-header .slide-controls {
  display: flex;
  gap: 0.5vmin;
}

.slide-card-header .slide-controls button {
  width: 3vmin;
  height: 3vmin;
  border: none;
  border-radius: 0.5vmin;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.slide-card-header .slide-controls button:hover {
  background: rgba(0, 0, 0, 0.1);
}

.slide-card-header .slide-controls button svg {
  width: 1.8vmin;
  height: 1.8vmin;
  fill: var(--grey-colour);
}

.slide-card-header .slide-controls button.delete-slide-btn:hover {
  background: var(--red-colour);
}

.slide-card-header .slide-controls button.delete-slide-btn:hover svg {
  fill: white;
}

/* Slide preview area */
.slide-preview {
  aspect-ratio: 16 / 9;
  background: var(--lesson-creator-colour);
  overflow: hidden;
  position: relative;
}

/* Hidden text styling in builder - faded with dashed underline */
/* Must override slideTemplates.css player styles so text remains visible/editable */
.slide-preview .hidden-text,
.slide-preview .hidden-text:not(.revealed) {
  color: inherit !important;
  opacity: 0.75;
  border: 1px dashed var(--slide-text-colour);
  user-select: auto !important;
  background: transparent !important;
  border-radius: 0;
  padding: 0;
  cursor: auto;
}

/* Highlighted text in builder */
.slide-preview mark {
  background: #ef5777;
  color: inherit;
  padding: 0.5cqi;
  border-radius: 0.5cqi;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

/* Links in builder */
.slide-preview a {
  color: var(--lesson-creator-colour);
  text-decoration: underline;
}

/* Slide Type Panel (slide-out using resources-pane structure) */
.slide-type-panel.resources-pane {
  /* Override resources-pane to work as slide-out */
  position: absolute;
  top: 0;
  right: -100%;
  height: 100%;
  width: 50%;
  max-width: 800px;
  border-radius: 0;
  transition: right 0.3s ease;
  border-left: 2px solid rgba(0, 0, 0, 0.1);
  box-shadow: none;
}

.slide-type-panel.resources-pane.show {
  right: 0;
}

/* Override resources-header for slide-type-panel */
.slide-type-panel .resources-header {
  padding: 3vmin 0;
}

.slide-type-panel .resources-header .top-title {
  text-transform: uppercase;
}

#slide-type-search {
  width: 100%;
  padding: 1vmin;
  background-color: var(--light-colour);
  border-radius: 0.5vmin;
  border: none;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  font-size: 1.5vmin;
}

/* Activity Picker Panel (same slide-out pattern) */
.activity-picker-panel.resources-pane,
.resource-picker-panel.resources-pane {
  position: absolute;
  top: 0;
  right: -100%;
  height: 100%;
  width: 50%;
  max-width: 800px;
  border-radius: 0;
  transition: right 0.3s ease;
  border-left: 2px solid rgba(0, 0, 0, 0.1);
  box-shadow: none;
}

.activity-picker-panel.resources-pane.show,
.resource-picker-panel.resources-pane.show {
  right: 0;
}

.activity-picker-panel .resources-header,
.resource-picker-panel .resources-header {
  padding: 0;
}

.activity-picker-panel .resources-header .top-title,
.resource-picker-panel .resources-header .top-title {
  text-transform: uppercase;
}

/* Tabs for Lists / Plus */
.activity-picker-tabs {
  display: flex;
  gap: 0.5vmin;
  margin: 2vmin 0;
}

.activity-picker-tabs .tab-btn {
  flex: 1;
  padding: 1.5vmin 2vmin;
  border: none;
  background: #ccc;
  border-top: 1px solid rgba(0, 0, 0, 0.2);
  cursor: pointer;
  font-size: 1.5vmin;
  font-weight: 500;
  border-radius: 0.5vmin;
  transition: background 0.2s, color 0.2s;
}

.activity-picker-tabs .tab-btn:hover {
  background: #eee;
}

.activity-picker-tabs .tab-btn.active {
  background: #3498db;
  color: white;
  border-top: none;
  border-bottom: 2px solid rgba(0, 0, 0, 0.2);
}

#activity-picker-search,
#resource-picker-search {
  width: 100%;
  padding: 1vmin;
  background-color: var(--light-colour);
  border-radius: 0.5vmin;
  border: none;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  font-size: 1.5vmin;
}

/* Activity item cards */
.activity-item {
  display: flex;
  align-items: center;
  justify-content: center;
  column-gap: 2vmin;
  transition: background 0.15s;
  width: 100%;
  border: 1px solid rgba(0, 0, 0, 0.05);
  padding: 2vmin;
  background: var(--white-colour);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  user-select: none;
  cursor: pointer;
}

.all-resources {
  padding: 1vmin !important;
  row-gap: 1vmin !important;
}

/* Ensure hidden attribute works with display:flex */
.activity-item[hidden] {
  display: none !important;
}

.activity-item:hover {
  background: #ffda79;
}

.activity-item .activity-icon {
  width: 3%;
  height: 5vmin;
  display: flex;
  align-items: center;
  justify-content: center;
}

.activity-item .activity-icon svg {
  width: 1vmin;
  height: 1vmin;
  fill: var(--brand-colour);
}

.activity-item .activity-info {
  flex: 1;
  min-width: 0;
}

.activity-item .activity-name {
  font-weight: 600;
  font-size: 1.6vmin;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.activity-item .activity-meta {
  font-size: 1.3vmin;
  color: #666;
  margin-top: 0.3vmin;
}

.activity-item .share-status {
  display: flex;
  align-items: center;
  gap: 0.5vmin;
  font-size: 1.2vmin;
  text-transform: uppercase;
}

.activity-item .share-status.not-shared {
  color: #999;
}

.activity-item .share-status svg {
  width: 1.8vmin;
  height: 1.8vmin;
}

/* Empty state for activity picker */
.activity-picker-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5vmin;
  text-align: center;
  color: #666;
}

.activity-picker-empty svg {
  width: 8vmin;
  height: 8vmin;
  fill: #ccc;
  margin-bottom: 2vmin;
}

.activity-picker-empty p {
  font-size: 1.5vmin;
  margin: 0.5vmin 0;
}

/* Loading state */
.activity-picker-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5vmin;
  color: #666;
  font-size: 1.5vmin;
}

/* Activity divider (for "Also compatible with..." section) */
.activity-divider {
  padding: 2vmin 3vmin;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  color: #666;
  font-size: 1.3vmin;
}

/* ========================================
   Triptico Activity Slide Preview Styles
   ======================================== */

.contentHolder.tripticoActivitySlide {
  /* Override grid layout - use flexbox for centering */
  display: flex;
  align-items: center;
  justify-content: center;
  grid-template-columns: none;
  grid-template-rows: none;
}

.triptico-activity-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2%;
  text-align: center;
  padding: 5%;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
}

.triptico-activity-preview .activity-preview-icon {
  width: 37.5cqi;
  height: auto;
  min-width: 40px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 1);
  border-radius: 1vmin;
  padding: 0.25cqi;
  box-sizing: border-box;
}

.triptico-activity-preview .activity-preview-icon img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 0.75vmin;
}

.triptico-activity-preview .activity-preview-name {
  font-size: var(--text-medium);
  font-weight: bold;
  color: var(--slide-text-colour);
}

.triptico-activity-preview .activity-preview-resource {
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.7);
}

.activity-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2%;
  width: 100%;
  height: 100%;
  color: rgba(255, 255, 255, 0.6);
}

.activity-placeholder p {
  font-size: var(--text-medium);
  margin: 0;
}

.activity-placeholder .select-activity-btn {
  background: rgba(255, 255, 255, 0.2);
  border-color: transparent;
  color: white;
  font-size: var(--text-small);
  padding: 1% 3%;
}

.activity-placeholder .select-activity-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.change-activity-btn {
  margin-top: 3vmin;
}

/* Activity embed (for player) */
.triptico-activity-embed {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.triptico-activity-embed .activity-iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 0.5vmin;
}

.activity-no-share-code {
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.5);
  margin-top: 2vmin;
  font-style: italic;
}

/* Menu bottom buttons (Close Menu / Exit) */
.menu-bottom-buttons {
  display: flex;
  gap: 1vmin;
}

.menu-bottom-buttons .lesson-builder-btn {
  flex: 1;
}

/* ========================================
   Slide Preview Editor Styles
   ======================================== */

/* Base slide content holder */
.slide-preview {
  container-type: inline-size;
}

.slide-preview .contentHolder,
.slide-preview .slide-content {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--slide-bg-colour);
  color: var(--slide-text-colour);
}

/* Editable content areas */
.slide-preview [contenteditable='true'] {
  outline: none;
  cursor: text;
}

.slide-preview [contenteditable='true']:focus {
  outline: 2px dashed rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

.slide-preview [contenteditable='true']:empty::before {
  content: attr(data-placeholder);
  opacity: 0.5;
}

/* Title Slide */
.slide-preview .titleSlide {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5%;
}

.slide-preview .titleSlide_title {
  font-size: var(--text-large);
  text-align: center;
  margin: 0;
  font-weight: normal;
  text-transform: none;
  text-shadow: none;
}

.slide-preview .titleSlide_subtitle {
  font-size: var(--text-medium);
  text-align: center;
  margin-top: 3cqi;
}

/* Text Slide */
.slide-preview .textSlide {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5%;
}

.slide-preview .textSlide_text {
  font-size: var(--text-medium);
  text-align: left;
  width: 100%;
  white-space: pre-wrap;
}

/* Text + Image Slide */
.slide-preview .textImageSlide {
  display: flex;
  height: 100%;
  min-height: 0;
}

.slide-preview .textImageSlide_textArea {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5%;
}

.slide-preview .textImageSlide_text {
  font-size: var(--text-medium);
  white-space: pre-wrap;
  width: 100%;
  text-align: left;
}

.slide-preview .textImageSlide_imageArea {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.slide-preview .textImageSlide_imageArea .slide-image-container {
  max-width: 90%;
  height: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide-preview .textImageSlide_imageArea .slide-image {
  max-width: 100%;
  max-height: 100%;
}

.slide-preview .slide-image {
  max-width: 95%;
  max-height: 95% !important;
  object-fit: contain;
  cursor: pointer;
  /* border-radius: 1vmin;
  border: 0.25cqi solid var(--white-colour);
  box-shadow: rgba(0, 0, 0, 0.3) 0px 1.5vmin 0.25vmin -0.75vmin,
    rgba(0, 0, 0, 0.1) 0 -0.3vmin 0 inset; */
}

/* Image container with delete button */
.slide-preview .slide-image-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-height: 100%;
}

/* Image controls bar (Start Hidden + Delete) */
.slide-preview .image-controls {
  position: absolute;
  bottom: 1cqi;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 1.5cqi;
  background: #ffda79;
  padding: 1cqi 1.5cqi;
  border-radius: 0.5vmin;
  white-space: nowrap;
  box-shadow: rgba(0, 0, 0, 0.3) 0px 1.5vmin 0.25vmin -0.75vmin,
    rgba(0, 0, 0, 0.1) 0 -0.3vmin 0 inset;
}

.slide-preview .hide-image-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5cqi;
  cursor: pointer;
  font-size: 1.5cqi;
  font-weight: 300;
  color: var(--lesson-creator-colour);
}

.slide-preview .hide-image-checkbox input {
  width: 1.5cqi;
  height: 1.5cqi;
  margin: 0;
  cursor: pointer;
}

.slide-preview .delete-image-btn {
  display: flex;
  align-items: center;
  gap: 0.5cqi;
  background: transparent;
  border: none;
  color: var(--red-colour);
  font-size: 1.5cqi;
  font-weight: 300;
  cursor: pointer;
  padding: 0.5cqi;
  border-radius: 0.5cqi;
}

.slide-preview .delete-image-btn svg {
  width: 1.5cqi;
  height: 1.5cqi;
  fill: currentColor;
}

.slide-preview .delete-image-btn:hover {
  background-color: var(--red-colour);
  color: white;
}

/* Image Slide */
.slide-preview .imageSlide {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.slide-preview .imageSlide .image-placeholder {
  width: 60%;
  height: 60%;
}

.slide-preview .imageSlide .slide-image-container {
  max-width: 90%;
  height: 90%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide-preview .imageSlide .slide-image {
  max-width: 100%;
  max-height: 100%;
}

/* Two Columns Slide */
.slide-preview .textTwoColumnsSlide {
  display: flex;
  height: 100%;
}

.slide-preview .textTwoColumnsSlide_colArea {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5%;
  border: none;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.slide-preview .textTwoColumnsSlide_colArea:first-child {
  border-right: 1px solid rgba(0, 0, 0, 0.2);
}

.slide-preview .textTwoColumnsSlide_text_1,
.slide-preview .textTwoColumnsSlide_text_2 {
  font-size: var(--text-medium);
  white-space: pre-wrap;
  width: 100%;
  text-align: left;
}

/* Checklist Slide */
.slide-preview .checklistSlide {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5%;
}

.slide-preview .checkListSlide_text {
  font-size: var(--text-medium);
  text-align: left;
  white-space: pre-wrap;
}

.slide-preview .checkListSlide_text p {
  margin: 1cqi 0;
}

/* Image placeholder in slides */
.slide-preview .image-placeholder {
  width: 80%;
  height: 80%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Thumbnail slide sidebar */
.slide-sidebar {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.slide-sidebar-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5vmin;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  background: var(--white-colour);
  position: sticky;
  bottom: 0;
  z-index: 1;
}

.slide-sidebar-title {
  font-size: 2vmin;
  font-weight: 700;
  color: var(--lesson-creator-colour);
  text-transform: uppercase;
}

.slide-sidebar-hint {
  display: flex;
}

.slide-sidebar-hint svg {
  width: 1.5vmin;
  height: 1.5vmin;
  fill: rgba(0, 0, 0, 0.3);
}

.slide-sidebar-hint p {
  font-size: 1.25vmin;
  font-weight: 300;
  color: rgba(0, 0, 0, 0.3);
  text-transform: uppercase;
}

.slide-list {
  flex: 1;
  overflow-y: auto;
  padding: 1.5vmin;
  display: flex;
  flex-direction: column;
  gap: 1.5vmin;
}

.slide-list-item {
  display: flex;
  align-items: flex-start;
  gap: 1vmin;
  cursor: pointer;
  transition: all 0.2s ease;
}

.slide-list-item:hover .slide-thumbnail {
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

/* Drag and drop states */
.slide-list-item-ghost {
  opacity: 0.4;
  background: #c8ebfb;
}

.slide-list-item-chosen {
  /* background: #ffda79; */
  /* box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2); */
  scale: 1.015;
}

.slide-list-item-drag {
  opacity: 1;
}

/* Slide thumbnail */
.slide-thumbnail-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5vmin;
}

.slide-list-label {
  font-size: 1.5vmin;
  font-weight: 600;
  color: var(--lesson-creator-colour);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.slide-thumbnail {
  aspect-ratio: 16 / 9;
  border-radius: 0.5vmin;
  overflow: hidden;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  position: relative;
  background: var(--slide-bg-colour);
}

/* Hide image controls in thumbnails */
.slide-thumbnail .image-controls {
  display: none;
}

.slide-list-item.active .slide-thumbnail {
  border: 1px solid var(--lesson-creator-colour);
  box-shadow: rgba(0, 0, 0, 0.3) 0px 1.5vmin 0.25vmin -0.75vmin,
    rgba(0, 0, 0, 0.1) 0 -0.3vmin 0 inset;
}

/*
 * Scaled thumbnail approach:
 * - We render the slide content at a fixed "reference" size (800x450px)
 * - Then scale it down to fit the thumbnail
 * - The thumbnail container uses aspect-ratio 16:9, so we just need to scale
 *   based on the width ratio: thumbnail_width / 800
 * - With sidebar ~270px usable and ~1.5vmin padding each side, thumbnail is ~240px
 * - Scale factor: 240/800 = 0.3, but we'll use CSS to make it responsive
 */
.thumb-scale-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 800px;
  height: 450px;
  transform-origin: top left;
  /* Scale will be set by JS or we use a CSS calculation */
  /* For ~240px thumbnail width: 240/800 = 0.3 */
  transform: scale(var(--thumb-scale, 0.3));
  pointer-events: none;
}

/* Cloned slide preview in thumbnail - inherits all styles from main slide */
.thumb-scale-container .slide-preview {
  width: 800px;
  height: 450px;
  aspect-ratio: 16 / 9;
  container-type: inline-size;
}

/* Hide interactive elements in thumbnails */
.thumb-scale-container .image-placeholder .lesson-builder-btn,
.thumb-scale-container .delete-image-btn,
.thumb-scale-container .hide-image-checkbox {
  display: none;
}

/* Ensure images display correctly in thumbnails */
.thumb-scale-container .slide-image {
  max-width: 95%;
  max-height: 95%;
  object-fit: contain;
  display: block;
}

/* Simple placeholder icon for thumbnails */
.thumb-scale-container .thumb-placeholder-icon {
  width: 80px;
  height: 80px;
  fill: rgba(255, 255, 255, 0.5);
}

/* Legacy thumb classes - keeping for fallback */
.thumb-check-item {
  font-size: 0.9vmin;
  line-height: 1.4;
  position: relative;
  padding-left: 1.2vmin;
}

.thumb-check-item::before {
  content: '•';
  position: absolute;
  left: 0;
}

.thumb-check-more {
  font-size: 0.8vmin;
  opacity: 0.7;
  padding-left: 1.2vmin;
}

/* ========================================
   Responsive Styles
   ======================================== */

/* Tablet landscape and smaller desktops */
@media (max-width: 1200px) {
  .lesson-creator-with-sidebar .inline-sidebar {
    min-width: 200px;
  }

  .slide-card {
    max-width: 800px;
  }
}

/* Tablet portrait */
@media (max-width: 992px) {
  .lesson-creator-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 2vmin;
  }

  .header-controls {
    width: 100%;
    justify-content: flex-end;
  }

  .lesson-creator-with-sidebar .inline-sidebar {
    min-width: 150px;
    flex: 0.5;
  }

  .slides-panel {
    flex: 2;
  }

  .slide-card-header {
    flex-wrap: wrap;
    gap: 1vmin;
  }
}

/* Mobile landscape / small tablets */
@media (max-width: 768px) {
  .lesson-creator-shell {
    padding: 0;
  }

  .lesson-creator-panel {
    border-radius: 0;
  }

  .lesson-creator-header {
    padding: 2vmin;
  }

  .lesson-creator-header .header-row h2 {
    font-size: 4vmin;
  }

  #lesson-creator-subtitle {
    display: none;
  }

  /* Hide sidebar on mobile */
  .lesson-creator-with-sidebar .inline-sidebar {
    display: none;
  }

  .slides-panel {
    flex: 1;
    padding: 2vmin;
  }

  .slide-card {
    max-width: 100%;
  }

  /* Slide type dialog */
  .slide-type-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .slide-type-dialog-content {
    width: 95%;
    padding: 2vmin;
  }
}

/* Mobile portrait */
@media (max-width: 480px) {
  .lesson-creator-header .header-row h2 {
    font-size: 5vmin;
  }

  .lesson-builder-btn {
    padding: 1.5vmin;
  }

  .lesson-builder-btn span {
    display: none;
  }

  .lesson-builder-btn svg {
    width: 3vmin;
    height: 3vmin;
  }

  /* Stack text+image slides vertically on mobile */
  .slide-preview .textImageSlide {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }

  .slide-preview .textTwoColumnsSlide {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }

  .slide-preview .textTwoColumnsSlide_colArea:first-child {
    border-right: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  }

  /* Slide type dialog - single column */
  .slide-type-grid {
    grid-template-columns: 1fr;
  }

  .slide-type-option {
    flex-direction: row;
    justify-content: flex-start;
    gap: 2vmin;
  }

  .slide-type-icon {
    width: 8vmin;
    height: 8vmin;
  }

  /* Slide card controls */
  .slide-card-header .slide-controls button {
    width: 5vmin;
    height: 5vmin;
  }

  .slide-card-header .slide-controls button svg {
    width: 2.5vmin;
    height: 2.5vmin;
  }

  /* Slide footer row */
  .slide-footer-row {
    flex-direction: column;
    align-items: stretch;
    gap: 1vmin;
  }

  .slide-name-group {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5vmin;
  }

  .slide-name-group input {
    width: 100%;
  }

  .lesson-builder-btn {
    justify-content: center;
  }
}

/* ========================================
   Lesson Slide-out Menu
   ======================================== */

.lesson-slide-menu {
  height: 100%;
  width: fit-content;
  background-color: var(--white-colour);
  position: absolute;
  top: 0;
  right: -100%;
  transition: right 0.3s ease;
  border-left: 2px solid rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
}

.lesson-slide-menu.show {
  right: 0;
}

.lesson-menu-header {
  display: flex;
  column-gap: 5vmin;
  justify-content: space-between;
  align-items: center;
  padding: 3vmin 4vmin;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  background: var(--light-colour);
}

.lesson-menu-header h2 {
  margin: 0;
  font-size: 3vmin;
  font-weight: 400;
  text-transform: uppercase;
  color: var(--lesson-creator-colour);
}

.lesson-menu-items {
  flex: 1;
  padding: 2vmin;
  display: flex;
  justify-content: space-between;
  flex-direction: column;
  gap: 2vmin;
}

.lesson-menu-items .simpleButton {
  width: 100%;
}

#menu-exit-btn {
  background-color: #fab1a0;
}

#menu-exit-btn:hover {
  color: var(--lesson-creator-colour);
}

.lesson-menu-item {
  display: flex;
  align-items: center;
  gap: 2vmin;
  padding: 2vmin 3vmin;
  border: none;
  background: transparent;
  border-radius: 0.75vmin;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
}

.lesson-menu-item:hover {
  background: var(--light-colour);
}

.lesson-menu-item svg {
  width: 3vmin;
  height: 3vmin;
  fill: var(--lesson-creator-colour);
  flex-shrink: 0;
}

.lesson-menu-item span {
  font-size: 2vmin;
  font-weight: 500;
  color: var(--dark-colour);
}

/* ========================================
   Single Slide View
   ======================================== */

/* Wrapper for navigation + slide */
.single-slide-wrapper {
  flex: 3;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: flex 0.3s ease;
}

/* Navigation bar (bottom) */
.slide-navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5vmin 0;
  background: var(--white-colour);
  border-top: 1px solid #eee;
  flex-shrink: 0;
}

.footer-right {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5vmin;
  margin-right: 1.5vmin;
}

.footer-left {
  margin-left: 1.5vmin;
}

.footer-div {
  width: 1px;
  height: 5vmin;
  background-color: #ddd;
  margin-left: 1vmin;
  margin-right: 1vmin;
}

.slide-navigation .nav-right {
  display: flex;
  align-items: center;
}

.slide-navigation .nav-slide-type {
  font-size: 1.25vmin;
  font-weight: 600;
  color: var(--grey-colour);
  text-transform: uppercase;
  background-color: #f7f7f7;
  padding: 0.5vmin 1vmin;
  border-radius: 0.5vmin;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.slide-navigation .nav-btn {
  width: 5vmin;
  height: 5vmin;
  min-width: 32px;
  min-height: 32px;
}

.slide-navigation .slide-counter {
  font-size: 1.5vmin;
  font-weight: 500;
  color: var(--lesson-creator-colour);
  min-width: 8vmin;
  text-align: center;
  padding: 0 1vmin;
}

#add-slide-btn,
#save-lesson-btn {
  min-width: 15vmin;
  background-color: #ffda79;
}

#add-slide-btn:hover,
#save-lesson-btn:hover {
  color: var(--lesson-creator-colour);
}

#save-lesson-btn {
  background-color: #55efc4;
}

/* Floating Formatting Toolbar */
.floating-toolbar {
  position: fixed;
  z-index: 1000;
  display: flex;
  gap: 0.5vmin;
  background: var(--white-colour);
  border: 1px solid var(--lesson-creator-colour);
  padding: 0.6vmin;
  border-radius: 0.5vmin;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.floating-toolbar .format-btn {
  width: 3.5vmin;
  height: 3.5vmin;
  min-width: 28px;
  min-height: 28px;
  padding: 0.5vmin;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 0.4vmin;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.floating-toolbar .format-btn svg {
  width: 100%;
  height: 100%;
  fill: var(--lesson-creator-colour);
}

.floating-toolbar .format-btn:hover {
  background: var(--lesson-creator-colour);
}

.floating-toolbar .format-btn:hover svg {
  fill: var(--white-colour);
}

/* Single slide view panel adjustments */
.single-slide-wrapper .slides-panel {
  flex: 1;
  overflow: hidden;
  padding: 2vmin;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Single slide card - use max-width to constrain based on available height */
.slide-card.single-slide-view {
  width: 100%;
  max-width: 1200px;
  height: fit-content;
  margin-bottom: 0;
}

/* Slide preview maintains 16:9 aspect ratio */
.slide-card.single-slide-view .slide-preview {
  aspect-ratio: 16 / 9;
  width: 100%;
}

/* No slides message */
.no-slides-message {
  font-size: 2vmin;
  color: var(--grey-colour);
  text-align: center;
  padding: 4vmin;
}

/* Responsive adjustments for single slide view */
@media (max-width: 768px) {
  .slide-navigation {
    padding: 1vmin;
    gap: 1.5vmin;
  }

  .slide-navigation .slide-counter {
    font-size: 2vmin;
  }
}

/* ========================================
   Theme Picker Dialog
   ======================================== */

.theme-picker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1vmin;
  margin-top: 1vmin;
}

.theme-swatch {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5vmin;
  padding: 1.5vmin;
  border: 0.5vmin solid transparent;
  border-radius: 0.5vmin;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 8vmin;
  aspect-ratio: 3/2;
}

.theme-swatch:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.theme-swatch.selected {
  border-color: #ffda79;
  box-shadow: 0 0.5vmin 0 -0.2vmin rgba(0, 0, 0, 0.2);
  pointer-events: none;
}

.theme-swatch-label {
  font-size: 1.4vmin;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.theme-swatch-preview {
  font-size: 2.5vmin;
  font-weight: bold;
}

/* ========================================
   Share Dialog
   ======================================== */

.share-code-display,
.share-link-display {
  background: var(--light-grey, #f5f5f5);
  border-radius: 0.5vmin;
  padding: 1.5vmin;
  margin: 1.5vmin 0;
  text-align: center;
}

.share-code-label {
  font-size: 1.4vmin;
  color: #666;
  margin: 0 0 0.5vmin 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.share-code-value {
  font-size: 4vmin;
  letter-spacing: 0.2em;
  margin: 0;
  color: var(--brand-green, #4caf50);
}

.share-link-input {
  width: 100%;
  font-size: 1.4vmin;
  padding: 1vmin;
  text-align: center;
  cursor: pointer;
}