*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
}

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: #0d1117;
  color: #f5f6fa;
  margin: 0;
}

textarea,
input {
  width: 100%;
  padding: 1rem 1rem;
  margin-bottom: 1rem;
  background: rgba(255, 255, 255, 0.04);
  color: #f5f6fa;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  font-size: 1.4rem;
  resize: vertical;
  outline: none;
  transition: 0.2s ease;
}

.input-search {
  margin-bottom: 0;
}

textarea:hover,
input:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

textarea:focus,
input:focus {
  border-color: #a78bfa;
  box-shadow: 0 0 8px #a78bfa55;
  background: rgba(255, 255, 255, 0.07);
}

textarea {
  height: 140px;
  overflow: auto;
}

ul::-webkit-scrollbar,
textarea::-webkit-scrollbar,
.tag-editor-items::-webkit-scrollbar,
.tag-filter-items::-webkit-scrollbar {
  width: 0.6rem;
  height: 0.6rem;
}

ul::-webkit-scrollbar-track,
textarea::-webkit-scrollbar-track,
.tag-editor-items::-webkit-scrollbar-track,
.tag-filter-items::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 4px;
}

ul::-webkit-scrollbar-thumb,
textarea::-webkit-scrollbar-thumb,
.tag-editor-items::-webkit-scrollbar-thumb,
.tag-filter-items::-webkit-scrollbar-thumb {
  background: rgba(120, 90, 200, 0.8);
  border-radius: 4px;
}

/* buttons */
.btn {
  height: 2.5rem;
  padding: 0 0.8rem;
  background: #443091;
  color: #f5f6fa;
  font-weight: 400;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 8px;
  cursor: pointer;
  transition: 0.15s ease;
}

.btn:hover {
  background: #8564ff;
  box-shadow: 0 0 12px rgba(124, 101, 255, 0.28);
}

.btn.toggle {
  font-size: 1rem;
  background-color: #4330914b;
}

.btn.toggle:hover {
  background: #8564ff;
  box-shadow: 0 0 12px rgba(124, 101, 255, 0.28);
}

.btn.add {
  font-weight: 600;
  height: 3rem;
  width: 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.delete-btn {
  background: transparent;
  border: none;
  color: #aaa;
  font-size: 2rem;
  cursor: pointer;
  opacity: 0.3;
  transition: 0.2s ease;
}

.delete-btn:hover {
  opacity: 1;
  color: #ff7aa2;
}

/* header & logo */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  height: 5rem;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.logo {
  display: flex;
  align-items: center;
  height: 85%;
}
.logo img {
  display: block;
  object-fit: contain;
  height: 80%;
  margin-top: 0.6rem;
  margin-left: 1.4rem;
}

.menu {
  display: flex;
  align-items: center;
  height: 4rem;
  margin-right: 1rem;
}

.wrapper {
  display: grid;
  grid-template-columns: 20% 1fr 30%;
  grid-template-areas: "left center right";
  gap: 0;
  width: 100%;
  height: Calc(100vh - 5rem);
}

.column-title {
  color: #d7d8df;
  font-size: 2rem;
  font-weight: 600;
  margin-left: 1rem;
}

/* ---left-column--- */
.left-column {
  display: grid;
  grid-template-rows: 5rem 10rem 1fr;
  width: auto;
  min-width: 0;
}

.items-header {
  display: flex;
  align-items: center;
}

.search-area {
  display: flex;
  flex-direction: column;
  justify-content: center;
  /* align-items: center; */
  width: 100%;
  height: 100%;
  padding: 1rem;
}

.search-area input {
  display: block;
  height: 4rem;
  width: 100%;
}

/* Tag Area */
.tag-area {
  width: 100%;
}

.tag-filter {
  padding: 1rem;
}

.tag-filter-items {
  height: 18rem;
  overflow-y: auto;
  margin-bottom: 1.5rem;
}

.filter-tag {
  padding: 0.4rem 1.2rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  margin: 0.3rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  transition: 0.2s ease;
}

.filter-tag:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.35);
}

.filter-tag.active {
  background: linear-gradient(to bottom, #6d4bd9, #5a3cc0);
  color: #f7f7fc;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 10px rgba(124, 101, 255, 0.25);
}

.tag-manager {
  width: 90%;
}

.tag-input-area {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.input-add-tag {
  margin: 0.5rem 0rem;
  margin-right: 1rem;
  height: 4rem;
}

.delete-tag.btn {
  margin: 0.5rem 0rem;
}

.item-list {
  display: flex;
  justify-content: center;
  width: 100%;
  min-width: 0;
  overflow: hidden;
  max-height: 32rem;
  padding: 1rem;
}

.item-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-x: auto;
  overflow-y: auto;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 95%;
}

.item-list li {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  min-width: 0;
  margin: 0.2rem 0.1rem;
}

.item-title {
  flex: 1;
  min-width: 0;
  width: 100%;
  display: flex;
  align-items: center;
  cursor: pointer;
  height: 2.4rem;
  font-size: 1.4rem;
  padding: 0.7rem;
  background-color: rgba(176, 150, 255, 0.1);
  color: #e8e8ff;
  border-radius: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.item-title:hover {
  background-color: rgba(206, 189, 255, 0.18);
}

/* ---center-colmun--- */
.preview {
  display: grid;
  grid-template-rows: 5rem 1fr;
  height: 100%;
  width: 100%;
  min-width: 0;
}

.preview-header {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.preview-btn {
  margin-right: 1rem;
}

.preview-canvas-wrapper {
  display: flex;
  justify-content: center;
  position: relative;
  padding: 1rem;
}

.preview-canvas {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #f5f6f8;
  color: #222;
  font-size: 4.8rem;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 0 12px 2px rgba(167, 139, 250, 0.28),
    0 0 24px 6px rgba(167, 139, 250, 0.18);
}

.canvas-dark {
  background: #0d1117;
  color: #f5f6fa;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 18px rgba(167, 139, 250, 0.25);
}

/* ---right-column--- */
.editor {
  display: grid;
  grid-template-rows: 5rem 7fr 3fr;
  height: 100%;
  width: 100%;
}

.editor-header {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.editor-btn {
  margin-right: 1rem;
}
.css-editor {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
}

.section-title {
  align-self: flex-start;
  font-size: 1.6rem;
  color: #c5c6d0;
  margin-bottom: 0.5rem;
}

.codename {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.4rem;
  height: 4rem;
  resize: none;
}

.codearea {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.4rem;
  height: 80%;
  resize: none;
  overflow-y: auto;
}

.tag-editor {
  padding: 1rem;
  width: 100%;
}

.tag-manager {
  width: 100%;
}

.tag-editor-items {
  max-height: 18rem;
  width: 100%;
  overflow-y: auto;
}

.editor-tag {
  padding: 0.4rem 1.2rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  margin: 0.3rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  transition: 0.2s ease;
}

.editor-tag:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.35);
}

.editor-tag.active {
  background: linear-gradient(to bottom, #6d4bd9, #5a3cc0);
  color: #f7f7fc;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 10px rgba(124, 101, 255, 0.25);
}

/* --- responsive --- */
.left-column {
  grid-area: left;
}
.center-column {
  grid-area: center;
}
.right-column {
  grid-area: right;
}

@media (hover: none) and (pointer: coarse), (max-width: 1024px) {
  header {
    position: sticky;
    top: 0;
    z-index: 999;
    height: 4.5rem;
    margin-bottom: 0.5rem;
  }

  .wrapper {
    grid-template-columns: 100%;
    grid-template-rows: auto auto auto;
    grid-template-areas:
      "center"
      "right"
      "left";
    height: auto;
    min-height: calc(100vh - 5rem);
  }

  .left-column {
    grid-template-rows: 5rem auto auto auto;
    margin-bottom: 5rem;
  }

  .center-colmun {
    grid-template-rows: 5rem auto;
  }

  .editor {
    grid-template-rows: 5rem auto auto;
  }

  .item-list {
    min-height: 10rem;
  }
  .preview-canvas-wrapper {
    height: 30rem;
    margin-bottom: 3rem;
  }
  .tag-filter-items {
    min-height: 10rem;
    margin-bottom: 2rem;
  }

  textarea,
  input {
    min-height: 4rem;
  }

  .codearea {
    height: 20rem;
  }
}