/* ===========================================
   COURSE FILTER SECTION - HOMEPAGE
   =========================================== */
.course-filter {
  position: absolute;
  left: 50%;
  bottom: -30%;
  transform: translate(-50%, -50%);
  width: 100%;
  max-width: 1280px;
  padding: 30px 20px;
  background-color: var(--color-primary);
  border-radius: 30px;
  box-shadow: var(--shadow-lg);
  z-index: 9;
}

.filter-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 20px;
  height: 100%;
}

/* Filter Text */
.filter-text {
  flex: 1;
  padding: 0 3rem;
}
.filter-text p {
  margin: 0;
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.5px;
  color: #fff;
}

/* Filter Form */
.filter-form {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  flex: 2;
}

/* Submit Button */
.filter-submit {
  padding: 14px 32px;
  background: #fff;
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 700;
  border: none;
  border-radius: 50px;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-submit:hover {
  background: var(--color-secondary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(57, 166, 83, 0.4);
}

/* ===========================================
   CUSTOM MULTI-SELECT
   =========================================== */
.custom-select {
  position: relative;
  min-width: 220px;
}

.custom-select#program-select {
  min-width: 260px;
}

/* Trigger */
.custom-select__trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 12px 16px;
  background: #fff;
  border: 1px solid transparent;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.25s;
}

.custom-select__trigger:hover,
.custom-select.is-open .custom-select__trigger {
  border-color: var(--color-secondary);
}

.custom-select.is-open .custom-select__trigger {
  border-radius: 10px 10px 0 0;
  border-bottom-color: transparent;
}

/* Icon */
.custom-select__icon {
  flex-shrink: 0;
  color: #888;
}

/* Placeholder */
.custom-select__placeholder {
  font-size: 12px;
  color: #888;
  display: -webkit-box;
  -webkit-line-clamp: 2; /* số dòng */
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.custom-select.has-value .custom-select__placeholder {
  display: none;
}

/* Arrow */
.custom-select__arrow {
  flex-shrink: 0;
  color: #888;
  transition: transform 0.3s ease;
}

.custom-select.is-open .custom-select__arrow {
  transform: rotate(180deg);
}

/* Tags */
.custom-select__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1;
}

.custom-select__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: var(--color-secondary);
  color: #fff;
  font-size: 11px;
  font-weight: 500;
  border-radius: 5px;
  white-space: nowrap;
}

.custom-select__tag-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}

.custom-select__tag-remove:hover {
  background: rgba(255, 255, 255, 0.4);
}

.custom-select__tag-remove svg {
  width: 10px;
  height: 10px;
}

/* Dropdown */
.custom-select__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  /* max-height: 220px; */
  background: #fff;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-secondary);
  border-top: none;
  border-radius: 0 0 10px 10px;
  overflow-y: auto;
  z-index: 100;
  display: none;
}

/* .custom-select.is-open .custom-select__dropdown {
    display: block;
} */

/* Options */
.custom-select__option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  cursor: pointer;
  transition: background 0.2s;
}

.custom-select__option:hover {
  background: #f5f5f5;
}

.custom-select__option.is-selected {
  background: rgba(57, 166, 83, 0.08);
}

.custom-select__option.is-disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* Checkbox */
.custom-select__checkbox {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 2px solid #ccc;
  border-radius: 4px;
  flex-shrink: 0;
  transition: all 0.2s;
}

.custom-select__option.is-selected .custom-select__checkbox {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
}

.custom-select__option.is-selected .custom-select__checkbox::after {
  content: "";
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

/* Label */
.custom-select__label {
  font-size: 13px;
  color: var(--color-text);
}

.custom-select__option.is-selected .custom-select__label {
  font-weight: 600;
  color: var(--color-secondary);
}

/* ===========================================
   RESPONSIVE
   =========================================== */

/* Tablet Large */
@media (max-width: 1300px) {
  .course-filter {
    position: static;
    transform: none;
    margin: 2rem 20px 2rem;
  }
}

/* Tablet */
@media (max-width: 1024px) {
  .filter-wrapper {
    flex-direction: column;
    text-align: center;
    gap: 24px;
  }

  .filter-text p br {
    display: none;
  }

  .filter-form {
    width: 100%;
    justify-content: center;
  }

  .custom-select {
    min-width: 180px;
    max-width: 220px;
  }

  .custom-select#program-select {
    min-width: 200px;
    max-width: 260px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .course-filter {
    padding: 24px 16px;
    border-radius: 16px;
  }
  .filter-text {
    padding: 0 1rem;
  }
  .filter-form {
    flex-direction: column;
  }

  .custom-select,
  .custom-select#program-select {
    width: 100%;
    min-width: 100%;
    max-width: 100%;
  }

  .custom-select__trigger {
    min-height: 48px;
    padding: 10px 14px;
  }

  .filter-submit {
    width: 100%;
    padding: 16px 32px;
  }
}

@media screen and (max-width: 480px) {

}