@import url('https://fonts.googleapis.com/css2?family=VT323&display=swap');

/* ---- Win95 palette ---- */
:root {
  --teal: #008080;
  --silver: #c0c0c0;
  --silver-dark: #808080;
  --silver-darker: #404040;
  --white: #ffffff;
  --navy: #000080;
  --navy2: #1084d0;
  --font: Tahoma, "MS Sans Serif", Geneva, Verdana, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  min-height: 100%;
  background: var(--teal);
  font-family: var(--font);
  font-size: 13px;
  color: #000;
  -webkit-font-smoothing: none;
}

/* ---- desktop ---- */
.desktop {
  min-height: 100vh;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  background:
    repeating-linear-gradient(45deg, rgba(255,255,255,0.02) 0 2px, transparent 2px 4px),
    var(--teal);
}

/* ---- generic beveled window ---- */
.win95-window {
  background: var(--silver);
  border: 2px solid;
  border-color: #dfdfdf var(--silver-darker) var(--silver-darker) #dfdfdf;
  box-shadow: 1px 1px 0 var(--white) inset, -1px -1px 0 var(--silver-dark) inset;
  padding: 3px;
}

.main-window {
  width: 100%;
  max-width: 960px;
  display: flex;
  flex-direction: column;
  animation: winpop 0.28s ease-out;
}
@keyframes winpop { from { transform: scale(0.97); opacity: 0; } to { transform: scale(1); opacity: 1; } }

/* ---- title bar ---- */
.titlebar {
  background: linear-gradient(90deg, var(--navy), var(--navy2));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3px 4px;
  font-weight: bold;
  user-select: none;
}
.titlebar-title { padding-left: 3px; cursor: default; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.titlebar-btns { display: flex; gap: 2px; flex-shrink: 0; }
.tb-btn {
  width: 18px; height: 16px;
  background: var(--silver);
  border: 1px solid;
  border-color: #dfdfdf var(--silver-darker) var(--silver-darker) #dfdfdf;
  box-shadow: 1px 1px 0 var(--white) inset;
  font-family: var(--font); font-size: 11px; font-weight: bold;
  color: #000; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.tb-btn:active { border-color: var(--silver-darker) #dfdfdf #dfdfdf var(--silver-darker); }

/* ---- menu bar ---- */
.menubar {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 2px 4px;
  background: var(--silver);
  border-bottom: 1px solid var(--silver-dark);
  position: relative;
}
.menu-item {
  position: relative;
  padding: 2px 8px;
  cursor: pointer;
}
.menu-item:hover, .menu-item.open { background: var(--navy); color: #fff; }
.menu-item u { text-decoration: underline; }
.dropdown {
  position: absolute;
  top: 100%; left: 0;
  min-width: 200px;
  background: var(--silver);
  border: 2px solid;
  border-color: #dfdfdf var(--silver-darker) var(--silver-darker) #dfdfdf;
  box-shadow: 2px 2px 4px rgba(0,0,0,0.4);
  z-index: 50;
  color: #000;
  padding: 2px;
}
.dropdown-item { padding: 4px 20px 4px 24px; cursor: pointer; white-space: nowrap; }
.dropdown-item:hover { background: var(--navy); color: #fff; }
.hamburger { margin-left: auto; display: none; padding: 2px 8px; }

.menu-scrim { position: fixed; inset: 0; z-index: 40; }

/* ---- window body ---- */
.window-body {
  display: flex;
  gap: 4px;
  padding: 6px;
  min-height: 420px;
}

/* ---- sunken field ---- */
.field-sunken {
  background: var(--white);
  border: 2px solid;
  border-color: var(--silver-dark) #dfdfdf #dfdfdf var(--silver-dark);
  box-shadow: 1px 1px 0 var(--silver-darker) inset, -1px -1px 0 var(--white) inset;
}

/* ---- sidebar tree ---- */
.sidebar {
  width: 210px;
  flex-shrink: 0;
  padding: 6px;
  overflow-y: auto;
}
.tree-root { font-weight: bold; margin-bottom: 6px; padding-bottom: 4px; border-bottom: 1px dotted var(--silver-dark); }
.tree-item {
  padding: 3px 6px;
  margin: 1px 0 1px 10px;
  cursor: pointer;
  border-left: 1px dotted var(--silver-dark);
  white-space: nowrap;
}
.tree-item:hover { background: #d8e4ff; }
.tree-item.selected { background: var(--navy); color: #fff; }
.tree-icon { display: inline-block; width: 16px; }

/* ---- content ---- */
.content {
  flex: 1;
  padding: 16px 20px;
  overflow-y: auto;
  max-height: 60vh;
}

/* ---- markdown ---- */
.md-body { line-height: 1.55; }
.md-body h1 { font-size: 22px; margin: 0 0 12px; color: var(--navy); border-bottom: 2px solid var(--silver-dark); padding-bottom: 6px; }
.md-body h2 { font-size: 16px; margin: 18px 0 8px; color: #000080; }
.md-body p { margin: 8px 0; }
.md-body ul { margin: 8px 0; padding-left: 22px; }
.md-body li { margin: 3px 0; }
.md-body a { color: var(--navy); }
.md-body strong { color: #000; }
.md-body em { color: var(--silver-darker); }
.md-body blockquote {
  border-left: 4px solid var(--navy2);
  background: #eef4ff;
  margin: 12px 0; padding: 8px 12px;
  font-style: italic;
}
.md-body code {
  font-family: 'VT323', monospace;
  font-size: 16px;
  background: #ececec;
  padding: 0 3px;
}
.md-body pre {
  position: relative;
  background: #f7f7f7;
  border: 2px solid;
  border-color: var(--silver-dark) #dfdfdf #dfdfdf var(--silver-dark);
  box-shadow: 1px 1px 0 var(--silver-darker) inset;
  padding: 10px 12px;
  margin: 12px 0;
  overflow-x: auto;
  font-family: 'VT323', monospace;
  font-size: 17px;
  line-height: 1.3;
}
.md-body pre code { background: none; padding: 0; font-size: inherit; }
.copy-btn { position: absolute; top: 6px; right: 6px; }

.md-body table {
  border-collapse: collapse;
  margin: 12px 0;
  width: 100%;
}
.md-body th, .md-body td {
  border: 1px solid var(--silver-dark);
  padding: 5px 9px;
  text-align: left;
}
.md-body th { background: var(--silver); }
.md-body tbody tr:nth-child(even) { background: #f2f2f2; }
.md-body hr { border: none; border-top: 1px solid var(--silver-dark); margin: 18px 0; }

/* ---- win95 buttons ---- */
.win95-btn {
  background: var(--silver);
  border: 2px solid;
  border-color: #dfdfdf var(--silver-darker) var(--silver-darker) #dfdfdf;
  box-shadow: 1px 1px 0 var(--white) inset, -1px -1px 0 var(--silver-dark) inset;
  padding: 4px 12px;
  font-family: var(--font);
  font-size: 12px;
  color: #000;
  cursor: pointer;
}
.win95-btn:active {
  border-color: var(--silver-darker) #dfdfdf #dfdfdf var(--silver-darker);
  box-shadow: 1px 1px 0 var(--silver-darker) inset;
  padding: 5px 11px 3px 13px;
}
.win95-btn:focus { outline: 1px dotted #000; outline-offset: -4px; }

/* ---- validator ---- */
.validator h1 { font-size: 22px; margin: 0 0 8px; color: var(--navy); }
.validator .muted { color: var(--silver-darker); font-size: 12px; margin: 4px 0 16px; line-height: 1.5; }
.input-row { padding: 3px; margin-bottom: 12px; }
.key-input {
  width: 100%;
  border: none; outline: none;
  padding: 8px 6px;
  font-family: 'VT323', monospace;
  font-size: 22px;
  letter-spacing: 1px;
  background: transparent;
}
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.result-panel {
  padding: 14px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  line-height: 1.5;
}
.result-panel .result-icon { font-size: 20px; }
.result-panel.ok { background: #eafbe7; border-color: #4a7d3a; color: #1c4a12; }
.result-panel.bad { background: #fdeaea; border-color: #a33; color: #7a1414; }

.muted { color: var(--silver-darker); }

/* ---- status bar ---- */
.statusbar {
  display: flex;
  gap: 3px;
  padding: 3px;
  background: var(--silver);
}
.status-cell {
  border: 1px solid;
  border-color: var(--silver-dark) #dfdfdf #dfdfdf var(--silver-dark);
  padding: 3px 8px;
  font-size: 11px;
}
.status-cell.grow { flex: 1; }
.status-cell.clock { min-width: 90px; text-align: right; }

/* ---- footer ---- */
.desktop-footer { margin-top: auto; padding: 4px; }
.desktop-footer a {
  color: #cfeaea;
  font-size: 12px;
  text-decoration: none;
  border-bottom: 1px dotted #cfeaea;
}
.desktop-footer a:hover { color: #fff; }

/* ---- dialog ---- */
.dialog-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.25);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.dialog { width: 360px; max-width: 90vw; animation: winpop 0.2s ease-out; }
.dialog-body { padding: 18px; }
.about-row { display: flex; gap: 14px; align-items: flex-start; }
.about-icon { font-size: 40px; }
.about-row p { margin: 4px 0; line-height: 1.45; }
.dialog-footer { padding: 8px 12px 12px; display: flex; justify-content: center; }

/* ---- boot screen ---- */
.boot {
  position: fixed; inset: 0;
  background: #000;
  color: #fff;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 30px;
  z-index: 999;
}
.boot-logo { display: flex; align-items: center; gap: 18px; }
.boot-flag { display: grid; grid-template-columns: 34px 34px; grid-template-rows: 34px 34px; gap: 5px; transform: skewX(-12deg); }
.boot-flag .q { display: block; border-radius: 3px 3px 0 0; }
.q1 { background: #ff5959; } .q2 { background: #4caf50; }
.q3 { background: #4a90e2; } .q4 { background: #ffcf3d; }
.boot-title { font-family: var(--font); font-size: 30px; line-height: 1.05; }
.boot-title b { font-weight: bold; }
.boot-title sup { font-size: 15px; }
.boot-status { font-family: var(--font); font-size: 15px; opacity: 0.85; }
.boot-bar {
  width: 260px; height: 22px;
  border: 2px solid;
  border-color: var(--silver-dark) #dfdfdf #dfdfdf var(--silver-dark);
  background: #111;
  overflow: hidden;
}
.boot-bar-fill {
  height: 100%; width: 0;
  background: repeating-linear-gradient(90deg, var(--navy2) 0 14px, transparent 14px 18px);
  animation: bootfill 2s linear forwards;
}
@keyframes bootfill { from { width: 0; } to { width: 100%; } }

/* ---- BSOD ---- */
.bsod {
  position: fixed; inset: 0;
  background: #0000aa;
  color: #fff;
  font-family: 'VT323', monospace;
  font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
  cursor: pointer;
  padding: 24px;
}
.bsod-inner { max-width: 620px; line-height: 1.35; }
.bsod-inner p { margin: 6px 0; }
.bsod-head { background: #aaa; color: #0000aa; display: inline-block; padding: 0 8px; font-weight: bold; }
.bsod-foot { margin-top: 10px; }

/* ---- responsive ---- */
@media (max-width: 720px) {
  .desktop { padding: 8px; }
  .window-body { flex-direction: column; padding: 4px; }
  .hamburger { display: block; }
  .sidebar {
    display: none;
    width: 100%;
    max-height: 240px;
  }
  .sidebar.mobile-open { display: block; }
  .content { max-height: none; padding: 12px; }
  .titlebar-title { font-size: 12px; }
  .key-input { font-size: 18px; }
  .status-cell.grow { display: none; }
}
</parameter>
</invoke>