body {
  background: var(--duck-blue);
}



.page {
  display: grid;
  grid-template-columns: 30rem 1fr;
  gap: 1rem;
  height: calc(100vh - 12rem);
  padding: 2rem;
  box-sizing: border-box;
  overflow: hidden;
}

/* ============================================================ */
/* SIDEBAR */
/* ============================================================ */
.sidebar-title {
  padding-left: 0.5rem;
  margin: 0rem;
  font-size: 2.4rem;
  font-family: var(--font-main);
}

.sidebar {
  min-height: 0;
  max-height: 99%;
}

.sidebar {
  background: var(--duck-white);
  padding: 1rem 1.6rem;
  box-sizing: border-box;
  border-radius: 2.7rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--page-title-card-shadow);
}


.category-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-height: 0;
  max-height: 100%;
  overflow: visible;
  padding: 0.4rem 0.6rem 1rem;
  box-sizing: border-box;
  scrollbar-width: none;
}

.content::-webkit-scrollbar {
  display: none;
}

.sidebar-text {
  margin: 0;
  font-size: 1.6rem;
  font-family: var(--font-main);
}

.category-content-card {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--duck-white);
  padding: 1.6rem;
  box-sizing: border-box;
  border-radius: 2.7rem;
  box-shadow: var(--page-title-card-shadow);
}

.content-header {
  flex: 0 0 auto;
}


/* ============================================================ */
/* SIDEBAR CATEGORY SEARCH INPUT */
/* ============================================================ */
.category-search-input {
  font-family: var(--font-main);  
  font-size: 1.5rem;
  min-height: 4.4rem;
  border: 0.2rem solid var(--duck-disabled);
  background: var(--duck-white);
  color: var(--duck-charcoal);
  padding: 0.8rem 1rem;
  border-radius: 1.8rem;
}

.category-search-input {
  width: 100%;
  margin-top: 1.2rem;
  box-sizing: border-box;
}

.category-search-input::placeholder {
  font-size: 1.5rem;
  color: var(--duck-disabled);
}

.category-search-input:focus {
  border-color: var(--duck-yellow);
  outline: none;
}

/* ============================================================ */
/* SIDEBAR CATEGORY BUTTONS */
/* ============================================================ */
.category-list {
  display: grid;
  gap: 0.5rem;
  margin-top: 1.2rem;
  min-height: 0;
  overflow-y: auto;
}

.category-button{
  cursor: pointer;
}

.category-button {
  text-align: left;
  height: 6rem;
  border: 2px solid var(--duck-disabled);
  background: var(--duck-white);
  border-radius: 1.8rem;
}

.category-button:hover {
  border: 2px solid var(--duck-yellow);
}

.category-button.is-selected {
  border: 2px solid var(--duck-yellow);
  background: var(--duck-yellow);
}

.category-button-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-left: 1rem;
}

.category-name {
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 1.7rem;
  color: var(--duck-charcoal);
  word-break: break-word;
  line-height: 1.3;
  margin-top: 0.3rem;
}

.category-meta {
  font-family: var(--font-main);
  font-size: 1.4rem;
  color: var(--duck-charcoal);
  padding-left: 1rem; 
}

/* ============================================================ */
/* VOCABULARY */
/* ============================================================ */
.vocabulary-title {
  padding-left: 0.5rem;
  margin: 0rem;
  font-size: 2.4rem;
  font-family: var(--font-main);
}
.vocabulary-title-card {
  background: var(--duck-white);
  padding: 0rem 1.6rem;
  box-sizing: border-box;
  border-radius: 2.7rem;
  background: var(--duck-white);
  padding-top: 1rem;
  padding-bottom: 1.6rem;
  box-shadow: var(--page-title-card-shadow);
}

.vocabulary-search-wrap {
  position: relative;
  width: 100%;
  max-width: 50rem;
  margin-top: 1.2rem;
}

.vocabulary-search-input {
  font-family: var(--font-main);  
  font-size: 1.5rem;
  min-height: 4.4rem;
  border: 0.2rem solid var(--duck-disabled);
  background: var(--duck-white);
  color: var(--duck-charcoal);
  padding: 0.8rem 1rem;
  border-radius: 1.8rem;
  max-width: 50rem;
}

.vocabulary-search-input {
  width: 100%;
  box-sizing: border-box;
  margin-top: 0;
}

.vocabulary-search-input::placeholder {
  font-size: 1.5rem;
  color: var(--duck-disabled);
}

.vocabulary-search-input:focus {
  border-color: var(--duck-yellow);
  outline: none;
}

.vocabulary-search-dropdown {
  position: absolute;
  top: calc(100% + 0.8rem);
  left: 0;
  right: 0;
  background: var(--duck-white);
  border-radius: 1.8rem;
  box-shadow: 0 1rem 2.4rem rgba(0, 0, 0, 0.12);
  max-height: 36rem;
  overflow-y: auto;
  z-index: 20;
}

.vocabulary-search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
}

.vocabulary-search-dropdown[hidden] {
  display: none;
}

.vocabulary-search-result,
.vocabulary-search-empty {
  width: 100%;
  padding: 1rem 1.2rem;
  box-sizing: border-box;
  font-family: var(--font-main);
}

.vocabulary-search-result {
  border: none;
  background: var(--duck-white);
  color: var(--duck-charcoal);
  text-align: left;
  cursor: pointer;
}

.vocabulary-search-result:hover {
  background: #fff7cf;
}

.vocabulary-search-result-label,
.vocabulary-search-result-category {
  display: block;
}

.vocabulary-search-result-label {
  font-size: 1.6rem;
  font-weight: 600;
}

.vocabulary-search-result-category {
  margin-top: 0.2rem;
  font-size: 1.3rem;
  color: var(--duck-gray);
}

.vocabulary-search-empty {
  font-size: 1.5rem;
  color: var(--duck-charcoal);
}

/* ============================================================ */
/* CONTENT ARRAY BOX */
/* ============================================================ */
#content-array-title{
  padding-left: 0.5rem;
  margin: 0;
  font-size: 2.4rem;
  font-family: var(--font-main);
}

.category-count {
  padding-left: 0.5rem;
  margin: 0;
  font-size: 1.6rem;
  font-family: var(--font-main);
}

.category-content-card {
  background: var(--duck-white);
  padding: 1.6rem 1.6rem 1.3rem;
  box-sizing: border-box;
  border-radius: 2.7rem;
  box-shadow: var(--page-title-card-shadow-small);
}

.content-header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 4rem;
  margin-bottom: 1.6rem;
}


/* ============================================================ */
/* TITLES */
/* ============================================================ */
.image-label,
.empty-state{
  margin: 0;
  font-size: 1.6rem;
  font-family: var(--font-main);
}

/* ============================================================ */
/* IMAGES */
/* ============================================================ */
.image-grid {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  gap: 1.2rem;
  padding-right: 0.4rem;
  padding-bottom: 1rem;
}

.image-card {
  background: var(--duck-white);
  padding: 0.8rem;
  box-sizing: border-box;
  transition: transform 0.2s ease, box-shadow 0.2s ease, outline-color 0.2s ease;
}

.image-card.is-search-highlighted {
  outline: 0.35rem solid var(--duck-yellow);
  transform: translateY(-0rem) scale(1.02);
  border-radius: 2.7rem;
}

.image-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 1.8rem;
  background: var(--duck-white);
  box-shadow: var(--card-div-shadow);
}

.image-label {
  margin-top: 0.8rem;
  line-height: 1.3;
  word-break: break-word;
  text-align: center;
}


/* ============================================================ */
/* PLAY CATEGORY BUTTON */
/* ============================================================ */
.play-category-row {
  display: flex;
  justify-content: center;
  margin-top: 1.6rem;
}

.play-category-btn {
  margin: 0rem;
  padding: 1.6rem 3rem;
  padding: var(--homepages-go-btn-padding-L);
  font-size: 2.5rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  border-radius: 3.6rem;
  font-family: var(--font-main);
  text-align: center;
  background: var(--duck-pink);
  color: var(--duck-white);
  width: 30rem;
  box-shadow: var(--homepage-go-btn-shadow);
}

.play-category-btn {
  background: var(--duck-pink-light);
}


.empty-state {
  padding: 1rem 0;
}


/* ============================================================ */
/* TABLET 900PX */
/* ============================================================ */
/* @media (max-width: 900px) {
  .page {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
  }

  .category-list,
  .content {
    overflow: visible;
  }
} */


/* ============================================================ */
/* MOBILE 550 PX */
/* ============================================================ */
@media (max-width: 550px) {
  .page {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    height: auto;
    min-height: auto;
    padding: 1rem;
    overflow: visible;
  }

  .sidebar,
  .content {
    width: 100%;
    max-height: none;
    min-height: 0;
  }

  .sidebar {
    height: auto;
    padding: 1rem;
    border-radius: 2rem;
  }

  .content {
    gap: 1.2rem;
    padding: 0;
    overflow: visible;
  }

  .sidebar-title,
  .vocabulary-title,
  #content-array-title {
    font-size: 2.2rem;
  }

  .vocabulary-title-card,
  .category-content-card {
    border-radius: 2rem;
    padding: 1.2rem;
  }

  .vocabulary-search-input,
  .category-search-input {
    max-width: none;
    width: 100%;
    min-height: 4.2rem;
    font-size: 1.5rem;
  }

  .category-list {
    display: flex;
    gap: 0.8rem;
    margin-top: 1rem;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 0.4rem;
  }

  .category-button {
    flex: 0 0 15rem;
    height: 7rem;
  }

  .category-name {
    font-size: 1.5rem;
  }

  .category-meta {
    font-size: 1.25rem;
  }

  .content-header {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    margin-bottom: 1.2rem;
  }

  .play-category-btn {
    width: 100%;
    padding: 1.2rem 2rem;
    font-size: 2rem;
  }

  .image-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    overflow: visible;
    padding-right: 0;
    padding-bottom: 0;
  }

  .image-card {
    padding: 0.4rem;
  }

  .image-card img {
    border-radius: 1.4rem;
  }

  .image-label {
    font-size: 1.4rem;
    margin-top: 0.6rem;
  }
}