:root {
      --bg: #f5f5f5;
      --card: #fff;
      --text: #111;
      --textbox: #2c2c2c;
      --subtle: #3f3e3e;
      --subtle2: #d6d5d5;
      --accent: #3b3b3b;
      --color1: #2486c7;
      --color2: #4583bd;
      --color3: #f9f9f9;
    }

    html.dark {
      --bg: #1f1e1e;
      --card: #E8F0FE;
      --text: #eee;
      --textbox: #3c3c3c;
      --subtle: #9e9e9e;
      --subtle2: #464646;
      --accent: #d4d4d4;
      --color1: #455e75;
      --color2: #353535;
      --color3: #212123;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: Inter, sans-serif;
      background: var(--bg);
      color: var(--text);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      min-height: 100vh;
      padding-top: 10vh;
      transition: 0.15s;
    }

    button {
      cursor: pointer;
    }

    /* ---------- header ---------- */
    .header {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      display: flex;
      justify-content: end;
      padding: 12px 0;
      background-color: var(--color3);
      box-shadow: 0 2px 6px rgba(0, 0, 0, .1);
    }

    .g_container {
      display: flex;
      align-items: center;
      justify-content: end;
      width: 100%;
      max-width: 900px;
      padding: 0 16px;
    }

    .gm_link {
      color: var(--subtle);
      text-decoration: none;
      font-weight: 400;
      font-size: 1em;
      margin-right: 1em;
      transition: color .2s;
    }

    .gm_link:hover {
      color: var(--text);
    }

    .gb_F {
      color: var(--subtle);
      margin-right: 8px;
      cursor: pointer;
    }

    .gb_F:hover {
      color: var(--text);
    }

    /* ---------- search ---------- */
    #searchForm {
      margin-bottom: 40px;
      width: 100%;
      max-width: 640px;
      display: flex;
    }

    #searchBox {
      flex: 1;
      padding: 14px 20px;
      border-radius: 24px;
      border: 0px solid #ccc;
      font-size: 16px;
      background: var(--card);
      color: var(--textbox);
      outline-width: inherit;
    }

    input:-internal-autofill-selected {
      background-color: #E8F0FE;
      color: var(--text);
    }

    #btn-search {
      border-radius: 24px;
      border-bottom-left-radius: 0;
      border-top-left-radius: 0;
      padding: 12px 24px 12px 20px;
      background: var(--color1);
      color: var(--card);
      font-weight: 600;
      font-size: medium;
      border: 0px solid #ccc;
      margin: 0px -90px;
      cursor: pointer;
    }

    /* ---------- categories ---------- */
    #grid {
      display: flex;
      flex-direction: column;
      gap: 6px;
      width: 100%;
      max-width: 1000px;
      padding: 0 16px;
      margin-bottom: 100px;
    }

    .category {
      background: var(--card);
      border-radius: 12px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: background 0.15s;
    }

    html.dark .category {
      background: var(--color3);
    }

    .categoryHeader {
      display: flex;
      align-items: center;
      padding: 2px 6px;
      background: rgba(0, 0, 0, 0.03);
      cursor: pointer;
      user-select: none;
      gap: 12px;
    }

    .toggleArrow {
      font-size: 14px;
      transition: transform 0.2s;
      color: var(--subtle);
      width: 20px;
      display: flex;
      justify-content: center;
    }

    .category.closed .toggleArrow {
      transform: rotate(-90deg);
    }

    .categoryColor {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      cursor: pointer;
      border: 2px solid rgba(255, 255, 255, 0.2);
    }

    .categoryName {
      font-weight: 200;
      color: var(--text);
      font-size: 1.3em;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      flex: 1;
      outline: none;
      border: 1px solid transparent;
      padding: 2px 4px 6px 0px;
      border-radius: 4px;
    }

    .categoryName:focus {
      background: rgba(0, 0, 0, 0.05);
      border-color: var(--subtle2);
    }

    .categoryContent {
      padding: 6px;
      display: grid;
      grid-template-columns: repeat(10, 1fr);
      gap: 18px 0px;
      transition: max-height 0.3s ease-out, opacity 0.2s;
    }

    .category.closed .categoryContent {
      display: none;
    }

    .categoryHandle {
      cursor: grab;
      color: var(--subtle);
      opacity: 0.3;
      font-size: 18px;
    }

    .categoryHandle:hover {
      opacity: 1;
    }

    .addCategoryBtn {
      align-self: center;
      padding: 10px 20px;
      border-radius: 20px;
      border: 1px dashed var(--subtle);
      background: transparent;
      color: var(--subtle);
      font-weight: 600;
      margin-top: 20px;
      cursor: pointer;
      transition: 0.2s;
    }

    .addCategoryBtn:hover {
      background: var(--card);
      border-color: var(--accent);
      color: var(--accent);
    }

    .shortcut {
      position: relative;
      display: flex;
      flex-direction: column;
      align-items: center;
      cursor: pointer;
      touch-action: none;
      user-select: none;
      -webkit-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      user-select: none;

    }

    .shortcut:active {
      cursor: grabbing;
    }

    .icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: transparent;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
      display: flex;
      margin: auto;
      font-size: 28px;
      cursor: pointer;
      transition: transform .15s;
    }

    .shortcut:hover .icon {
      transform: scale(1.18);
    }

    .label {
      margin-top: 6px;
      font-size: 12px;
      max-width: 64px;
      text-align: center;
      display: inline-flex;
      position: relative;
      color: var(--subtle);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    /* three-dots menu trigger */
    .menuBtn {
      position: absolute;
      top: 2px;
      right: 2px;
      opacity: 0;
      background: rgba(0, 0, 0, .4);
      color: #fff;
      border: none;
      border-radius: 4px;
      cursor: pointer;
      padding: 2px 4px;
      font-size: 12px;
    }

    #editShortcut:hover {
      background: var(--subtle2);
    }

    #removeShortcut:hover {
      background: var(--subtle2);
    }

    .shortcut:hover .menuBtn {
      opacity: 1;
    }

    /* plus button */
    .addBtn {
      width: 64px;
      height: 64px;
      border: 2px dashed var(--subtle);
      border-radius: 12px;
      background: transparent;
      color: var(--subtle);
      font-size: 32px;
      cursor: pointer;
      transition: .2s;
    }

    .addBtn:hover {
      border-color: var(--accent);
      color: var(--accent);
      transform: scale(1.12);
    }

    /* ---------- footer ---------- */
    footer {
      position: fixed;
      display: flex;
      background-color: var(--color3);
      color: #fff;
      bottom: 0;
      width: 100%;
      padding: 16px 0;
      box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
    }

    /* Darkmode Switch */
    .switch {
      position: relative;
      display: flex;
      width: 60px;
      height: 24px;
      right: 36px;
      bottom: 9px;
      margin-top: 20px;
      margin-left: auto;
      margin-right: 0;
    }

    .switch input {
      opacity: 0;
      width: 0;
      height: 0;
    }

    .slider {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: #ccc;
      transition: 0.4s;
      border-radius: 12px;
    }

    .slider:before {
      content: "";
      position: absolute;
      height: 24px;
      width: 24px;
      left: 4px;
      bottom: 1px;
      background-color: white;
      border-radius: 50%;
      transition: 0.4s;
    }

    input:checked+.slider {
      background-color: #313131;
    }

    input:checked+.slider:before {
      transform: translateX(26px);
    }


    /* ---------- importExport ---------- */
    #importExportBtn {
      position: relative;
      right: 12px;
      bottom: 0px;
      z-index: 10;
      padding: 10px 16px;
      border-radius: 0;
      background: var(--color2);
      color: var(--card);
      border: none;
      cursor: pointer;
    }

    #importExportBtn:hover {
      background: var(--color1);
    }

    .modal {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, .4);
      align-items: center;
      justify-content: center;
      z-index: 10;
    }

    .modalContent {
      background: var(--color2);
      border-radius: 12px;
      padding: 24px;
      width: 320px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
    }

    .modalContent h3 {
      margin-top: 0;
    }

    .modalContent input {
      width: 100%;
      padding: 10px;
      margin: 8px 0;
      border-radius: 6px;
      border: 1px solid #ccc;
      background: var(--bg);
      color: var(--text);
    }

    .modalActions {
      display: flex;
      justify-content: flex-end;
      gap: 8px;
      margin-top: 16px;
    }

    .modalActions button {
      padding: 8px 14px;
      border-radius: 6px;
      border: none;
      cursor: pointer;
    }

    .primary {
      background: var(--bg);
      color: var(--text);
      padding: 12px 8px;
      border: none;
      border-radius: 16px;
      margin: 2px 24px;
    }

    .primary:hover {
      background: var(--color1);
    }

    .secondary {
      background: var(--bg);
      color: var(--accent);
    }

    .secondary:hover {
      background: var(--color1);
    }

    /* Mobile styles */
    @media (max-width: 768px) {
      #grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 24px;
        padding: 0 8px;
      }

    .categoryContent {
      padding: 1px;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px 0px;
    }

      #searchForm {
        width: 72vw;
        display: flex;
        margin: -12px 90px 36px 0px;
      }

      .menuBtn {
        opacity: .8;
        z-index: 1;
      }

      .icon {
        width: 48px;
        height: 48px;
      }

      .label {
        font-size: 11px;
        max-width: 56px;
      }

      .label {
        font-size: 11px;
        max-width: 56px;
      }

      .addBtn {
        width: 56px;
        height: 56px;
        margin-left: 8px;
      }
    }