/* Windows 98 design system: tokens, 3D bevels, and common controls. */

:root {
  --face: #c0c0c0;
  --face-lt: #dfdfdf;
  --hilite: #ffffff;
  --shadow: #808080;
  --dark: #0a0a0a;

  --text: #000000;
  --text-dis: #808080;

  --title-1: #000080;
  --title-2: #1084d0;
  --title-in-1: #808080;
  --title-in-2: #b5b5b5;
  --title-text: #ffffff;
  --title-text-in: #dfdfdf;

  --sel: #000080;
  --sel-text: #ffffff;

  --desktop: #008080;
  --tip-bg: #ffffe1;

  --font: "MS Sans Serif", "Microsoft Sans Serif", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --mono: "Lucida Console", "Courier New", monospace;

  --taskbar-h: 28px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #000;
  font-family: var(--font);
  font-size: 11px;
  color: var(--text);
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: geometricPrecision;
}

body { user-select: none; -webkit-user-select: none; cursor: default; }

img { -webkit-user-drag: none; }

/* ---------------------------------------------------------------- bevels */
/* Raised: white outer highlight top/left, #dfdfdf inner, #808080 inner
   shadow bottom/right, near-black outer edge. */
.bevel-out {
  box-shadow:
    inset -1px -1px var(--dark),
    inset  1px  1px var(--hilite),
    inset -2px -2px var(--shadow),
    inset  2px  2px var(--face-lt);
}
.bevel-in {
  box-shadow:
    inset -1px -1px var(--hilite),
    inset  1px  1px var(--dark),
    inset -2px -2px var(--face-lt),
    inset  2px  2px var(--shadow);
}
/* Single-pixel variants: status bar panels, toolbar separators. */
.bevel-out-1 { box-shadow: inset -1px -1px var(--shadow), inset 1px 1px var(--hilite); }
.bevel-in-1  { box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--shadow); }
/* Sunken client area (text fields, list views, explorer panes). */
.sunken { background: #fff; box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--dark), inset -2px -2px var(--face-lt), inset 2px 2px var(--shadow); }
/* Etched group box frame. */
.bevel-group { box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--shadow); }

/* --------------------------------------------------------------- buttons */
.w98-btn {
  min-width: 75px;
  min-height: 23px;
  padding: 3px 12px;
  border: none;
  background: var(--face);
  font: 11px var(--font);
  color: var(--text);
  box-shadow:
    inset -1px -1px var(--dark),
    inset  1px  1px var(--hilite),
    inset -2px -2px var(--shadow),
    inset  2px  2px var(--face-lt);
  cursor: default;
  position: relative;
}
.w98-btn:active:not(:disabled),
.w98-btn.pressed {
  box-shadow:
    inset  1px  1px var(--dark),
    inset -1px -1px var(--hilite),
    inset  2px  2px var(--shadow),
    inset -2px -2px var(--face-lt);
  padding: 4px 11px 2px 13px;
}
.w98-btn:disabled { color: var(--text-dis); text-shadow: 1px 1px 0 var(--hilite); }
.w98-btn:focus { outline: 1px dotted #000; outline-offset: -4px; }
.w98-btn.small { min-width: 0; min-height: 0; padding: 2px 6px; }
.w98-btn.default { box-shadow: inset 0 0 0 1px var(--dark), inset -2px -2px var(--dark), inset 2px 2px var(--hilite), inset -3px -3px var(--shadow), inset 3px 3px var(--face-lt); }

/* Toolbar-style flat button (raises on hover/press). */
.w98-tool {
  border: none;
  background: transparent;
  font: 11px var(--font);
  color: var(--text);
  padding: 2px;
  min-width: 20px;
  cursor: default;
}
.w98-tool:hover { box-shadow: inset -1px -1px var(--shadow), inset 1px 1px var(--hilite); }
.w98-tool:active, .w98-tool.pressed { box-shadow: inset 1px 1px var(--shadow), inset -1px -1px var(--hilite); padding: 3px 1px 1px 3px; }
.w98-tool:disabled { color: var(--text-dis); text-shadow: 1px 1px 0 var(--hilite); box-shadow: none; }

/* --------------------------------------------------------- text controls */
input[type="text"], input[type="password"], textarea, select {
  font: 11px var(--font);
  color: var(--text);
}
.w98-field {
  background: #fff;
  border: none;
  padding: 3px 4px;
  box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--dark), inset -2px -2px var(--face-lt), inset 2px 2px var(--shadow);
}
.w98-field:focus { outline: none; }
textarea.w98-field { resize: none; font-family: var(--mono); }

select.w98-select {
  appearance: none; -webkit-appearance: none;
  background: #fff;
  border: none;
  padding: 2px 20px 2px 3px;
  box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--dark), inset -2px -2px var(--face-lt), inset 2px 2px var(--shadow);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='17' height='17'><rect width='17' height='17' fill='%23c0c0c0'/><rect x='0' y='0' width='16' height='15' fill='%23c0c0c0' stroke='%23ffffff' stroke-opacity='0'/><path d='M0 0h16v15H0z' fill='%23c0c0c0'/><path d='M0 0h15v14H0z' fill='none'/><path d='M1 1h15v14H1z' fill='%23c0c0c0'/><path d='M15 1v13H1' fill='none' stroke='%23808080'/><path d='M0 0v14h1V1h14V0z' fill='none' stroke='%23dfdfdf'/><path d='M16 15v1H0v-1z' fill='%23000000' opacity='0.25'/><path d='M5 6l3 4 3-4z' fill='%23000'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0 top 0;
  background-size: 17px 17px;
}
select.w98-select:focus { outline: none; }

/* ------------------------------------------------------ checkbox / radio */
.w98-check, .w98-radio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: default;
}
.w98-check input, .w98-radio input { position: absolute; opacity: 0; pointer-events: none; }
.w98-check .box, .w98-radio .box {
  width: 13px; height: 13px;
  background: #fff;
  flex: 0 0 auto;
  box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--shadow), inset -2px -2px var(--face-lt), inset 2px 2px var(--dark);
  display: block;
  position: relative;
}
.w98-radio .box { border-radius: 50%; box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--shadow), inset -2px -2px var(--face-lt), inset 2px 2px var(--dark); }
.w98-check input:checked + .box::after {
  content: "";
  position: absolute; left: 3px; top: 1px;
  width: 6px; height: 9px;
  border: solid #000;
  border-width: 0 2px 2px 0;
  transform: rotate(40deg) skewX(-4deg);
}
.w98-radio input:checked + .box::after {
  content: "";
  position: absolute; left: 3px; top: 3px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #000;
}
.w98-check input:focus + .box, .w98-radio input:focus + .box { outline: 1px dotted #000; outline-offset: 2px; }
.w98-check input:disabled + .box, .w98-radio input:disabled + .box { background: var(--face); }
.w98-check input:disabled ~ span, .w98-radio input:disabled ~ span { color: var(--text-dis); }

/* ------------------------------------------------------------- group box */
fieldset.w98-group {
  border: none;
  margin: 0;
  padding: 10px 8px 8px;
  box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--shadow);
}
fieldset.w98-group legend { padding: 0 4px; }

/* ------------------------------------------------------------------ tabs */
.w98-tabs { display: flex; flex-direction: column; height: 100%; min-height: 0; }
.w98-tabstrip { display: flex; gap: 1px; padding-left: 2px; position: relative; z-index: 1; margin-bottom: -2px; }
.w98-tab {
  font: 11px var(--font);
  padding: 3px 9px 4px;
  background: var(--face);
  border: none;
  cursor: default;
  box-shadow: inset 1px 1px var(--hilite), inset -1px -1px var(--dark), inset -2px -2px var(--face-lt);
  border-radius: 3px 3px 0 0;
  position: relative;
  top: 0;
}
.w98-tab[aria-selected="true"] {
  padding: 4px 11px 5px;
  top: -2px;
  box-shadow: inset 1px 1px var(--hilite), inset -1px 0 var(--dark), inset -2px 0 var(--face-lt);
  z-index: 2;
}
.w98-tabpages {
  flex: 1 1 auto;
  min-height: 0;
  background: var(--face);
  box-shadow: inset -1px -1px var(--dark), inset 1px 1px var(--hilite), inset -2px -2px var(--shadow), inset 2px 2px var(--face-lt);
  padding: 10px;
  overflow: auto;
}

/* ------------------------------------------------------------ status bar */
.w98-status { display: flex; gap: 2px; padding: 2px 0 0; flex: 0 0 auto; }
.w98-status > div {
  padding: 2px 5px;
  box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--shadow);
  overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}
.w98-status > div.grow { flex: 1 1 auto; }

/* -------------------------------------------------------------- listview */
.w98-list { background: #fff; overflow: auto; box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--dark), inset -2px -2px var(--face-lt), inset 2px 2px var(--shadow); }
/* Explorer switches this pane between icon views (row-wrap) and Details
   (single column); JS sets flex-flow, so it must be a flex container. */
.w98-list.icon-pane { display: flex; align-content: flex-start; }
.w98-list-row { display: flex; align-items: center; gap: 6px; padding: 1px 4px; white-space: nowrap; }
.w98-list-row.selected { background: var(--sel); color: var(--sel-text); }
/* Explorer items: details rows are .w98-list-row, icon/list rows are .ex-item. */
.ex-item.selected { outline: 1px dotted var(--sel); background: rgba(0, 0, 128, 0.08); }
.ex-item.selected .ex-label { background: var(--sel); color: var(--sel-text); }
.w98-list-head {
  display: flex; background: var(--face); font-weight: normal;
  box-shadow: inset 0 -1px var(--shadow);
}
.w98-list-head > div {
  padding: 2px 5px; font: 11px var(--font);
  box-shadow: inset -1px -1px var(--shadow), inset 1px 1px var(--hilite), inset -2px -2px var(--shadow), inset 2px 2px var(--face-lt);
}
.w98-list-head > div + div { border-left: 1px solid #fff; }

/* -------------------------------------------------------------- treeview */
.w98-tree { overflow: auto; background: #fff; padding: 4px 2px; box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--dark), inset -2px -2px var(--face-lt), inset 2px 2px var(--shadow); }
.w98-tree-row { display: flex; align-items: center; gap: 4px; padding: 1px 2px; white-space: nowrap; }
.w98-tree-row.selected > .w98-tree-label { background: var(--sel); color: var(--sel-text); }
.w98-tree-row.droptarget > .w98-tree-label { box-shadow: inset 0 0 0 1px #000; }
.w98-tree-label { padding: 0 3px; display: inline-flex; align-items: center; gap: 4px; }
.w98-twisty {
  width: 12px; height: 12px; flex: 0 0 12px;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--shadow);
  position: relative;
}
.w98-twisty::before, .w98-twisty::after {
  content: ""; position: absolute; background: #000; left: 2px; top: 5px; width: 7px; height: 1px;
}
.w98-twisty::after { left: 5px; top: 2px; width: 1px; height: 7px; }
.w98-twisty.open::after { display: none; }
.w98-twisty.leaf { box-shadow: none; background: transparent; }
.w98-twisty.leaf::before, .w98-twisty.leaf::after { display: none; }
.w98-tree-guide { border-left: 1px dotted var(--shadow); }

/* --------------------------------------------------------------- tooltip */
.w98-tip {
  position: fixed; z-index: 9000;
  background: var(--tip-bg);
  padding: 2px 4px;
  box-shadow: 0 0 0 1px #000;
  pointer-events: none;
  font: 11px var(--font);
  max-width: 260px;
}

/* ------------------------------------------------------------- scrollbars */
::-webkit-scrollbar { width: 16px; height: 16px; }
::-webkit-scrollbar-corner { background: var(--face); }
::-webkit-scrollbar-track {
  background-color: var(--face-lt);
  background-image:
    linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%),
    linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%);
  background-size: 2px 2px;
  background-position: 0 0, 1px 1px;
}
::-webkit-scrollbar-thumb {
  background: var(--face);
  box-shadow: inset -1px -1px var(--dark), inset 1px 1px var(--hilite), inset -2px -2px var(--shadow), inset 2px 2px var(--face-lt);
}
::-webkit-scrollbar-button:single-button {
  display: block;
  width: 16px; height: 16px;
  background: var(--face);
  box-shadow: inset -1px -1px var(--dark), inset 1px 1px var(--hilite), inset -2px -2px var(--shadow), inset 2px 2px var(--face-lt);
  background-repeat: no-repeat;
  background-position: center;
}
::-webkit-scrollbar-button:single-button:vertical:decrement {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='7' height='4'><path d='M3 0l3 4H0z' fill='%23000'/></svg>");
}
::-webkit-scrollbar-button:single-button:vertical:increment {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='7' height='4'><path d='M0 0h7L3 4z' fill='%23000'/></svg>");
}
::-webkit-scrollbar-button:single-button:horizontal:decrement {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='4' height='7'><path d='M0 3.5L4 0v7z' fill='%23000'/></svg>");
}
::-webkit-scrollbar-button:single-button:horizontal:increment {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='4' height='7'><path d='M0 0l4 3.5L0 7z' fill='%23000'/></svg>");
}
::-webkit-scrollbar-button:single-button:active { box-shadow: inset 1px 1px var(--dark), inset -1px -1px var(--hilite), inset 2px 2px var(--shadow), inset -2px -2px var(--face-lt); }

/* ------------------------------------------------------------------ misc */
.w98-hr { height: 2px; box-shadow: inset 0 1px var(--shadow), inset 0 -1px var(--hilite); margin: 6px 0; }
.w98-sunken-pane { background: var(--face); box-shadow: inset -1px -1px var(--hilite), inset 1px 1px var(--shadow); }
[hidden] { display: none !important; }
.w98-text-dis { color: var(--text-dis); }