/* ========================================
   Hero
======================================== */

.essential-words-hero {
  padding: 5rem 0 4rem;
  text-align: center;
}

.essential-words-hero__content {
  width: min(700px, 92%);
  margin: 0 auto;
}

.essential-words-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;

  margin-bottom: 1rem;
  padding: 0.4rem 1rem;

  border-radius: 999px;

  background: var(--secondary-background-color);
  color: var(--primary-color);

  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
}

.essential-words-hero h1 {
  margin-bottom: 1rem;

  color: var(--primary-color);

  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1.15;
}

.essential-words-hero p {
  max-width: 700px;
  margin: 0 auto;

  color: var(--text-light-color);

  font-size: 1.1rem;
  line-height: 1.7;
}

/* ========================================
   Main Section
======================================== */

.essential-words-section {
  padding-bottom: 5rem;
}

.essential-words-container {
  width: min(90rem, 92%);
  margin: 0 auto;
}

/* ========================================
   Section Header
======================================== */

.essential-words-header {
  display: flex;
  align-items: center;
  justify-content: space-between;

  gap: 2rem;

  padding: 2.5rem 3rem;

  background: var(--card-background-color);

  border-radius: 1.5rem;

  box-shadow: 0 10px 30px rgb(0 0 0 / 8%);
}

.essential-words-header__content h2 {
  margin-bottom: 0.5rem;

  color: var(--primary-color);

  font-size: 1.8rem;
}

.essential-words-header__content p {
  margin: 0;

  color: var(--text-light-color);
}

.essential-words-count {
  min-width: 90px;

  text-align: center;
}

.essential-words-count strong {
  display: block;

  color: var(--primary-color);

  font-size: 2.2rem;
  line-height: 1.1;
}

.essential-words-count span {
  color: var(--text-light-color);

  font-size: 0.85rem;
  font-weight: 600;
}

/* ========================================
   Filters
======================================== */

.essential-words-filters {
  margin-top: 1.5rem;
  padding: 2.5rem 3rem;

  background: var(--card-background-color);

  border-radius: 1.5rem;

  box-shadow: 0 10px 30px rgb(0 0 0 / 8%);
}

/* ========================================
   Search
======================================== */

.essential-words-search {
  margin-bottom: 2rem;
}

.essential-words-search label {
  display: block;

  margin-bottom: 0.75rem;

  color: var(--text-color);

  font-size: 0.95rem;
  font-weight: 700;
}

.essential-words-search__input-wrapper {
  position: relative;
}

.essential-words-search__icon {
  position: absolute;
  top: 50%;
  left: 1rem;

  transform: translateY(-50%);

  color: var(--text-light-color);

  pointer-events: none;
}

.essential-words-search input {
  width: 100%;

  padding: 0.85rem 1rem 0.85rem 2.75rem;

  border: 1px solid #cfe2ff;
  border-radius: 0.75rem;

  background: white;

  color: var(--text-color);

  font: inherit;

  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.essential-words-search input::placeholder {
  color: var(--text-light-color);
}

.essential-words-search input:focus {
  outline: none;

  border-color: var(--secondary-color);

  box-shadow: 0 0 0 3px rgb(0 179 230 / 10%);
}

/* ========================================
   Filter Groups
======================================== */

.essential-words-filter-group {
  margin-bottom: 1.75rem;
}

.essential-words-filter-label {
  display: block;

  margin-bottom: 0.85rem;

  color: var(--text-color);

  font-size: 0.95rem;
  font-weight: 700;
}

.essential-words-filter-buttons {
  display: flex;
  flex-wrap: wrap;

  gap: 0.6rem;
}

/* ========================================
   Filter Buttons
======================================== */

.essential-words-filter-button {
  padding: 0.55rem 1rem;

  border: 1px solid #cfe2ff;
  border-radius: 0.7rem;

  background: white;

  color: var(--text-color);

  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;

  cursor: pointer;

  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.essential-words-filter-button:hover {
  border-color: var(--secondary-color);

  background: #f0f8ff;

  color: var(--primary-color);

  transform: translateY(-1px);
}

.essential-words-filter-button:active {
  transform: translateY(0);
}

.essential-words-filter-button--active {
  border-color: var(--primary-color);

  background: var(--primary-color);

  color: white;
}

.essential-words-filter-button--active:hover {
  border-color: var(--primary-color);

  background: var(--primary-color);

  color: white;
}

/* ========================================
   Translate All
======================================== */

.essential-words-translation {
  display: flex;
  justify-content: flex-start;

  margin-top: 2rem;
  padding-top: 1.5rem;

  border-top: 1px solid var(--border-color);
}

.essential-words-translate-all-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  gap: 0.45rem;

  padding: 0.65rem 1rem;

  border: 1px solid #b9d9ff;
  border-radius: 0.7rem;

  background: #f0f7ff;

  color: var(--primary-color);

  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;

  cursor: pointer;

  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

.essential-words-translate-all-button:not(:disabled):hover {
  border-color: var(--primary-color);

  background: var(--secondary-background-color);

  transform: translateY(-1px);
}

.essential-words-translate-all-button:disabled {
  opacity: 0.45;

  cursor: not-allowed;
}

/* ========================================
   Word List
======================================== */

.essential-words-list {
  display: grid;

  grid-template-columns: repeat(3, minmax(0, 1fr));

  gap: 1.5rem;

  margin-top: 1.5rem;
}

/* ========================================
   Word Card
======================================== */

.essential-word-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 150px;
  padding: 1.5rem;
  background: var(--card-background-color);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  box-shadow: 0 8px 30px rgb(0 0 0 / 7%);
  overflow: hidden;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.essential-word-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: rgb(0 179 230 / 45%);
  border-radius: 1rem 0 0 1rem;
}

.essential-word-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgb(0 0 0 / 10%);
}

/* ========================================
   Word Card Top
======================================== */

.essential-word-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.essential-word-card__level {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: #edf5ff;
  color: var(--primary-color);
  font-size: 0.75rem;
  font-weight: 700;
}

.essential-word-card__category {
  color: var(--text-light-color);
  font-size: 0.75rem;
  font-weight: 600;
  text-align: right;
}

/* ========================================
   Word
======================================== */

.essential-word-card__word-wrapper {
  display: flex;
  align-items: center;
  /* justify-content: space-between; */
  margin-bottom: 0.7rem;
  gap: 0.5rem;
}

.essential-word-card__audio-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  background-color: var(--secondary-background-color);
  color: var(--primary-color);
  font-size: 1.1rem;
  cursor: pointer;

  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.essential-word-card__audio-button:hover {
  background-color: var(--tertiary-color);
  color: var(--hover-color-of-button-primary);
  transform: scale(1.1);
}

.essential-word-card__audio-button:active {
  transform: scale(0.9);
}

.essential-word-card__audio-button:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.essential-word-card__audio-button svg {
  width: 1.25rem;
  height: 1.25rem;

  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.essential-word-card__audio-button--speaking {
  background-color: var(--primary-color);
  color: var(--text-color-of-primary);
  transform: scale(1.05);
}

.essential-word-card__word {
  color: var(--text-color);
  font-size: 1.6rem;
  line-height: 1.2;
}

.essential-word-card__definition {
  margin: 0;
  color: var(--text-light-color);
  line-height: 1.65;
}

/* ========================================
   Translation
======================================== */

.essential-word-card__translation {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--secondary-color);
  border-radius: 0.6rem;
  background: #f0f8ff;
}

.essential-word-card__translation-label {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--primary-color);
  font-size: 0.75rem;
  font-weight: 700;
}

.essential-word-card__translation-text {
  color: var(--text-color);
  font-weight: 600;
}

/* ========================================
   Word Card Footer
======================================== */

.essential-word-card__footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 1.5rem;
}

.essential-word-card__action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid #b9d9ff;
  border-radius: 0.65rem;
  background: #f0f7ff;
  color: var(--primary-color);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.essential-word-card__action:not(:disabled):hover {
  border-color: var(--primary-color);
  background: var(--secondary-background-color);
  color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgb(0 157 197 / 12%);
}

.essential-word-card__action:not(:disabled):active {
  transform: translateY(0);
  box-shadow: none;
}

.essential-word-card__action--disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.essential-word-card__action--disabled:hover {
  color: var(--primary-color);
  transform: none;
}

/* ========================================
   Empty State
======================================== */

.essential-words-empty {
  margin-top: 2rem;
  padding: 4rem 2rem;
  background: var(--card-background-color);
  border-radius: 1.5rem;
  box-shadow: 0 8px 30px rgb(0 0 0 / 8%);
  text-align: center;
}

.essential-words-empty__icon {
  margin-bottom: 1rem;
  font-size: 2.5rem;
}

.essential-words-empty h3 {
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.essential-words-empty p {
  margin: 0;
  color: var(--text-light-color);
}

/* ========================================
   Pagination
======================================== */

.essential-words-pagination {
  display: flex;
  flex-wrap: wrap;
  max-width: 50%;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin: 2.5rem auto 0;
}

.essential-words-pagination button {
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 0.75rem;
  border: 1px solid #cfe2ff;
  border-radius: 0.7rem;
  background: white;
  color: var(--text-color);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.essential-words-pagination button:hover {
  border-color: var(--secondary-color);
  background: #f0f8ff;
  color: var(--primary-color);
  transform: translateY(-1px);
}

.essential-words-pagination button.active {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: white;
}

/* ========================================
   Utility
======================================== */

.hidden {
  display: none !important;
}

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

@media (max-width: 1000px) {
  .essential-words-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .essential-words-hero {
    padding: 4rem 0 3rem;
  }

  .essential-words-hero h1 {
    font-size: 2.2rem;
  }

  .essential-words-header {
    flex-direction: column;
    align-items: flex-start;

    padding: 2rem;
  }

  .essential-words-count {
    text-align: left;
  }

  .essential-words-filters {
    padding: 2rem;
  }

  .essential-words-list {
    grid-template-columns: 1fr;
  }

  .essential-word-card__audio-button {
    width: 1.75rem;
    height: 1.75rem;
  }

  .essential-word-card__audio-button svg {
    width: 1.1rem;
    height: 1.1rem;
  }
}

@media (max-width: 500px) {
  .essential-words-header,
  .essential-words-filters {
    border-radius: 1rem;
  }

  .essential-word-card__top {
    align-items: flex-start;
    flex-direction: column;
  }

  .essential-word-card__category {
    text-align: left;
  }

  .essential-words-translation {
    justify-content: stretch;
  }

  .essential-words-translate-all-button {
    width: 100%;
  }
}