* { box-sizing: border-box; }
body {
  font-family: system-ui, "Segoe UI", sans-serif;
  background: #f1f5f9;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 100px;
}
.custom-select {
  position: relative;
  width: 300px;
  user-select: none;
}
.select-trigger {
  background: white;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid #cbd5e1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: 0.2s;
}
.select-trigger:hover { border-color: #94a3b8; }
.options-container {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: white;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  margin-top: 8px;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: 0.2s;
  z-index: 10;
  overflow: hidden;
}
.custom-select.open .options-container {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.search-box {
  width: 100%;
  padding: 12px;
  border: none;
  border-bottom: 1px solid #f1f5f9;
  outline: none;
  font-size: 14px;
}
.options-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 200px;
  overflow-y: auto;
}
.options-list li {
  padding: 10px 16px;
  cursor: pointer;
  transition: 0.2s;
}
.options-list li:hover { background: #f8fafc; }
.options-list li.hidden { display: none; }

const wrapper = document.querySelector(".custom-select");
const trigger = document.querySelector(".select-trigger");
const selectedText = document.querySelector(".selected-text");
const searchBox = document.querySelector(".search-box");
const options = document.querySelectorAll(".options-list li");

// Toggle dropdown
trigger.addEventListener("click", () => {
  wrapper.classList.toggle("open");
  if(wrapper.classList.contains("open")) searchBox.focus();
});

// Select option
options.forEach(option => {
  option.addEventListener("click", () => {
    selectedText.innerText = option.innerText;
    wrapper.classList.remove("open");
    // Reset search
    searchBox.value = "";
    filterOptions("");
  });
});

// Search filter
searchBox.addEventListener("input", (e) => filterOptions(e.target.value));

function filterOptions(query) {
  const lowerQuery = query.toLowerCase();
  options.forEach(option => {
    const text = option.innerText.toLowerCase();
    if(text.includes(lowerQuery)) {
      option.classList.remove("hidden");
    } else {
      option.classList.add("hidden");
    }
  });
}

// Close outside click
document.addEventListener("click", (e) => {
  if(!wrapper.contains(e.target)) wrapper.classList.remove("open");
});