/* ============================================================
   RetroDesk — Windows 95 風デスクトップ
   静的な CSS のみ。authentic な配色・ベベルを手作りで再現。
   ============================================================ */

:root {
  --gray:      #c0c0c0;
  --gray-dk:   #808080;
  --gray-lt:   #dfdfdf;
  --white:     #ffffff;
  --black:     #000000;
  --navy:      #000080;
  --navy-lt:   #1084d0;
  --teal:      #008080;
  --btnface:   #c0c0c0;
  --titletext: #ffffff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  font-family: "W95FA", "MS Sans Serif", "Pixelated MS Sans Serif", Tahoma, Geneva, sans-serif;
  font-size: 12px;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: grayscale;
  user-select: none;
  cursor: default;
}

/* ---- Win95 bevel helpers ---- */
.bevel-out {
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt);
}
.bevel-in {
  border: 2px solid;
  border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  box-shadow: inset -1px -1px 0 0 var(--gray-lt), inset 1px 1px 0 0 var(--black);
}

/* ============================================================
   DESKTOP
   ============================================================ */
#desktop {
  position: fixed;
  inset: 0;
  bottom: 30px;
  background: var(--teal);
  overflow: hidden;
}

.desktop-icon {
  position: absolute;
  width: 76px;
  padding: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  text-align: center;
  cursor: default;
  border: 1px dotted transparent;
}
.desktop-icon .icon-img {
  width: 32px;
  height: 32px;
  image-rendering: pixelated;
  pointer-events: none;
  filter: drop-shadow(1px 1px 0 rgba(0,0,0,.35));
}
.desktop-icon .icon-label {
  color: #fff;
  font-size: 11px;
  line-height: 1.2;
  padding: 1px 2px;
  text-shadow: 1px 1px 0 #000;
  word-break: break-word;
  max-width: 74px;
}
.desktop-icon.selected .icon-label {
  background: var(--navy);
  border: 1px dotted #fff;
  padding: 0 1px;
}
.desktop-icon.selected { border: 1px dotted #ffffff80; }
.desktop-icon.drag-over .icon-img { filter: brightness(1.4); }

/* ============================================================
   WINDOWS
   ============================================================ */
.window {
  position: absolute;
  min-width: 160px;
  min-height: 80px;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt), 1px 1px 0 0 rgba(0,0,0,.35);
  display: flex;
  flex-direction: column;
  padding: 2px;
}
.window.maximized {
  border-radius: 0;
}

.title-bar {
  height: 20px;
  background: linear-gradient(90deg, var(--navy), var(--navy-lt));
  color: var(--titletext);
  display: flex;
  align-items: center;
  padding: 0 2px 0 3px;
  font-weight: bold;
  cursor: default;
  flex: 0 0 auto;
}
.window.inactive .title-bar {
  background: linear-gradient(90deg, var(--gray-dk), #b5b5b5);
  color: #dfdfdf;
}
.title-bar-text {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: none;
}
.title-bar-text img { width: 16px; height: 16px; image-rendering: pixelated; }
.title-bar-controls { display: flex; gap: 2px; }

.tb-btn {
  width: 16px;
  height: 14px;
  background: var(--gray);
  border: 1px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: bold;
  line-height: 1;
  padding: 0;
  cursor: default;
  color: #000;
}
.tb-btn:active { border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk); box-shadow: inset 1px 1px 0 0 var(--black); }
.tb-btn svg { display: block; }
.tb-btn.close { margin-left: 2px; }

.window-body {
  flex: 1 1 auto;
  margin: 2px 0 0 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

.resize-handle {
  position: absolute;
  width: 14px; height: 14px;
  right: 0; bottom: 0;
  cursor: nwse-resize;
  z-index: 5;
}

/* ---- Menu bar (inside apps) ---- */
.menubar {
  display: flex;
  gap: 0;
  background: var(--gray);
  padding: 1px 2px;
  flex: 0 0 auto;
  border-bottom: 1px solid #00000010;
}
.menubar .menu-item {
  padding: 2px 7px;
  cursor: default;
}
.menubar .menu-item:hover, .menubar .menu-item.open {
  background: var(--navy);
  color: #fff;
}

/* ---- generic Win95 buttons ---- */
button.w95, .w95-btn {
  font-family: inherit;
  font-size: 12px;
  min-width: 60px;
  padding: 3px 10px;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt);
  cursor: default;
  color: #000;
}
button.w95:active, .w95-btn:active, .w95-btn.active {
  border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  box-shadow: inset 1px 1px 0 0 var(--black);
  padding: 4px 9px 2px 11px;
}
button.w95:focus { outline: 1px dotted #000; outline-offset: -4px; }

/* ============================================================
   TASKBAR
   ============================================================ */
#taskbar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  height: 30px;
  background: var(--gray);
  border-top: 2px solid var(--white);
  box-shadow: inset 0 1px 0 0 var(--gray-lt);
  display: flex;
  align-items: center;
  padding: 2px;
  gap: 4px;
  z-index: 100000;
}

#start-button {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  padding: 2px 6px 2px 4px;
  font-weight: bold;
  font-size: 12px;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt);
  cursor: default;
  flex: 0 0 auto;
}
#start-button.active {
  border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  box-shadow: inset 1px 1px 0 0 var(--black);
}
#start-button img { width: 18px; height: 18px; image-rendering: pixelated; }

.taskbar-divider {
  width: 2px;
  height: 22px;
  border-left: 1px solid var(--gray-dk);
  border-right: 1px solid var(--white);
  margin: 0 2px;
  flex: 0 0 auto;
}

#task-buttons {
  flex: 1 1 auto;
  display: flex;
  gap: 3px;
  overflow: hidden;
  height: 24px;
}
.task-button {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 120px;
  max-width: 160px;
  height: 24px;
  padding: 0 6px;
  font-size: 11px;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt);
  cursor: default;
  white-space: nowrap;
  overflow: hidden;
}
.task-button img { width: 16px; height: 16px; image-rendering: pixelated; flex: 0 0 auto; }
.task-button span { overflow: hidden; text-overflow: ellipsis; }
.task-button.active {
  border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  box-shadow: inset 1px 1px 0 0 var(--black);
  background-image: linear-gradient(45deg, #ffffff40 25%, transparent 25%, transparent 50%, #ffffff40 50%, #ffffff40 75%, transparent 75%);
  background-size: 4px 4px;
  font-weight: bold;
}

#systray {
  flex: 0 0 auto;
  height: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
  border: 1px solid;
  border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
}
#systray .tray-icon { width: 16px; height: 16px; image-rendering: pixelated; cursor: default; }
#clock { font-size: 11px; min-width: 52px; text-align: center; }

/* ============================================================
   START MENU
   ============================================================ */
#start-menu {
  position: fixed;
  bottom: 30px;
  left: 2px;
  width: 200px;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt), 2px 2px 4px rgba(0,0,0,.4);
  display: none;
  z-index: 100001;
  padding: 2px;
}
#start-menu.open { display: flex; }
.start-sidebar {
  width: 24px;
  background: linear-gradient(180deg, var(--navy), #6a6a9a);
  writing-mode: vertical-lr;
  transform: rotate(180deg);
  color: #fff;
  font-weight: bold;
  font-size: 18px;
  text-align: center;
  padding: 8px 2px;
  letter-spacing: 1px;
  flex: 0 0 auto;
}
.start-sidebar b { color: #fff; }
.start-items { flex: 1 1 auto; display: flex; flex-direction: column; padding: 1px; }

.start-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 6px;
  cursor: default;
  position: relative;
  font-size: 13px;
}
.start-item img { width: 24px; height: 24px; image-rendering: pixelated; flex: 0 0 auto; }
.start-item:hover, .start-item.open { background: var(--navy); color: #fff; }
.start-item .arrow { margin-left: auto; font-size: 10px; }
.start-divider { height: 2px; margin: 3px 2px; border-top: 1px solid var(--gray-dk); border-bottom: 1px solid var(--white); }

/* submenu */
.submenu {
  position: fixed;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt), 2px 2px 4px rgba(0,0,0,.4);
  padding: 2px;
  z-index: 100002;
  min-width: 160px;
  display: none;
  flex-direction: column;
}
.submenu.open { display: flex; }

/* context menu */
#context-menu {
  position: fixed;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt), 2px 2px 4px rgba(0,0,0,.4);
  padding: 2px;
  z-index: 100003;
  min-width: 150px;
  display: none;
  flex-direction: column;
}
#context-menu.open { display: flex; }
.ctx-item { padding: 4px 20px 4px 24px; cursor: default; font-size: 12px; position: relative; }
.ctx-item:hover:not(.disabled) { background: var(--navy); color: #fff; }
.ctx-item.disabled { color: var(--gray-dk); }
.ctx-divider { height: 2px; margin: 3px 2px; border-top: 1px solid var(--gray-dk); border-bottom: 1px solid var(--white); }

/* dropdown menus (app menubars) */
.dropdown {
  position: fixed;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt), 2px 2px 4px rgba(0,0,0,.4);
  padding: 2px;
  z-index: 100004;
  min-width: 140px;
  display: flex;
  flex-direction: column;
}
.dropdown .ctx-item { padding: 4px 20px 4px 22px; }

/* ============================================================
   PAINT APP
   ============================================================ */
.paint-app { display: flex; flex-direction: column; height: 100%; background: var(--gray); }
.paint-main { display: flex; flex: 1 1 auto; overflow: hidden; }
.paint-tools {
  width: 56px;
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 3px;
  align-content: flex-start;
  flex: 0 0 auto;
}
.paint-tool {
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gray);
  border: 1px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt);
  cursor: default;
  font-size: 13px;
}
.paint-tool.active {
  border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  box-shadow: inset 1px 1px 0 0 var(--black);
  background-image: linear-gradient(45deg, #ffffff50 25%, transparent 25%, transparent 50%, #ffffff50 50%, #ffffff50 75%, transparent 75%);
  background-size: 4px 4px;
}
.paint-canvas-wrap {
  flex: 1 1 auto;
  overflow: auto;
  background: var(--gray-dk);
  padding: 4px;
}
.paint-canvas-wrap canvas {
  background: #fff;
  display: block;
  cursor: crosshair;
  image-rendering: pixelated;
}
.paint-bottom { display: flex; align-items: center; gap: 6px; padding: 3px 4px; flex: 0 0 auto; }
.paint-sizes { display: flex; gap: 3px; align-items: center; }
.paint-size-dot { width: 22px; height: 18px; display:flex; align-items:center; justify-content:center;
  border: 1px solid; border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white); background: var(--gray); cursor: default;}
.paint-size-dot.active { border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk); }
.paint-size-dot i { background: #000; display:block; border-radius: 50%; }
.paint-palette { display: flex; flex-wrap: wrap; width: 272px; gap: 0; flex: 0 0 auto; }
.paint-current {
  display: flex; align-items: center; margin-right: 4px;
  border: 1px solid; border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk); padding: 2px;
}
.paint-current .swatch-fg, .paint-current .swatch-bg { width: 16px; height: 16px; border: 1px solid #000; }
.paint-current .swatch-bg { margin: -8px 0 0 8px; }
.swatch {
  width: 15px; height: 15px;
  border: 1px solid;
  border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  cursor: default;
}

/* ============================================================
   MINESWEEPER
   ============================================================ */
.mine-app { padding: 6px; background: var(--gray); height: 100%; display: flex; flex-direction: column; align-items: center; }
.mine-frame { padding: 6px; }
.mine-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 4px; margin-bottom: 6px;
}
.mine-counter {
  background: #000; color: #f00; font-family: "Courier New", monospace; font-weight: bold;
  font-size: 22px; padding: 1px 3px; letter-spacing: 1px; min-width: 44px; text-align: right;
  border: 1px solid; border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  text-shadow: 0 0 2px #f00;
}
.mine-face {
  width: 30px; height: 30px; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gray);
  border: 2px solid; border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt);
  cursor: default;
}
.mine-face:active { border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk); }
.mine-grid { display: grid; gap: 0; }
.mine-cell {
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  font-weight: bold; font-size: 14px; font-family: "Courier New", monospace;
  background: var(--gray);
  border: 2px solid; border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  cursor: default; line-height: 1;
}
.mine-cell.revealed {
  border: 1px solid var(--gray-dk);
  background: var(--gray);
}
.mine-cell.mine { background: #f00; }
.mine-cell.flag-wrong::after { content: "✗"; color: #f00; position: absolute; }
.mine-c1 { color: #0000ff; }
.mine-c2 { color: #008000; }
.mine-c3 { color: #ff0000; }
.mine-c4 { color: #000080; }
.mine-c5 { color: #800000; }
.mine-c6 { color: #008080; }
.mine-c7 { color: #000000; }
.mine-c8 { color: #808080; }
.mine-level { display: flex; gap: 4px; margin-top: 8px; }

/* ============================================================
   NOTEPAD
   ============================================================ */
.notepad-app { display: flex; flex-direction: column; height: 100%; }
.notepad-text {
  flex: 1 1 auto;
  resize: none;
  border: 2px solid;
  border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  box-shadow: inset 1px 1px 0 0 var(--black);
  font-family: "Lucida Console", "Courier New", monospace;
  font-size: 13px;
  padding: 3px;
  outline: none;
  background: #fff;
  margin: 2px;
}
.notepad-status { font-size: 11px; padding: 2px 6px; color: #333; flex: 0 0 auto; }

/* generic app text */
.app-pad { padding: 12px; line-height: 1.5; overflow: auto; height: 100%; }
.app-pad h2 { margin: 0 0 8px; font-size: 14px; }

/* ============================================================
   DIALOGS
   ============================================================ */
#dialog-layer { position: fixed; inset: 0; z-index: 200000; display: none; }
#dialog-layer.show { display: block; }
.dialog-backdrop { position: absolute; inset: 0; }
.dialog {
  position: absolute;
  left: 50%; top: 42%;
  transform: translate(-50%,-50%);
  min-width: 280px;
  max-width: 420px;
  background: var(--gray);
  border: 2px solid;
  border-color: var(--white) var(--gray-dk) var(--gray-dk) var(--white);
  box-shadow: inset -1px -1px 0 0 var(--black), inset 1px 1px 0 0 var(--gray-lt), 2px 2px 6px rgba(0,0,0,.5);
  padding: 2px;
}
.dialog .title-bar { cursor: default; }
.dialog-content { display: flex; gap: 12px; padding: 16px 14px; align-items: flex-start; }
.dialog-icon { font-size: 32px; flex: 0 0 auto; }
.dialog-msg { font-size: 12px; line-height: 1.5; flex: 1 1 auto; }
.dialog-buttons { display: flex; justify-content: center; gap: 8px; padding: 0 14px 14px; }

/* ============================================================
   BOOT / SHUTDOWN / SCREENSAVER
   ============================================================ */
#boot {
  position: fixed; inset: 0; z-index: 300000;
  background: #000; color: #fff;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-family: "W95FA", "MS Sans Serif", sans-serif;
}
#boot .boot-logo {
  display: flex; flex-direction: column; align-items: center; gap: 18px;
}
#boot .flag {
  width: 120px; height: 100px; position: relative;
  transform: skewX(-8deg);
}
#boot .flag .q { position: absolute; width: 54px; height: 46px; }
#boot .flag .q1 { left: 0; top: 0; background: #ff3b30; }
#boot .flag .q2 { right: 0; top: 0; background: #4cd964; }
#boot .flag .q3 { left: 0; bottom: 0; background: #007aff; }
#boot .flag .q4 { right: 0; bottom: 0; background: #ffcc00; }
#boot .boot-title { font-size: 34px; font-weight: bold; letter-spacing: 1px; }
#boot .boot-title small { font-size: 16px; font-weight: normal; }
#boot .boot-bar {
  margin-top: 30px; width: 240px; height: 18px;
  border: 2px solid; border-color: var(--gray-dk) var(--white) var(--white) var(--gray-dk);
  background: #222; padding: 2px;
}
#boot .boot-bar i {
  display: block; height: 100%; width: 0%;
  background: repeating-linear-gradient(90deg, #008080 0 10px, transparent 10px 13px);
  transition: width .2s linear;
}
#boot .boot-tip { position: absolute; bottom: 24px; font-size: 12px; color: #aaa; }

#shutdown {
  position: fixed; inset: 0; z-index: 300000;
  background: #000; color: #ff8c1a;
  display: none; align-items: center; justify-content: center;
  flex-direction: column; gap: 20px;
  font-family: "W95FA", "MS Sans Serif", sans-serif;
}
#shutdown.show { display: flex; }
#shutdown .sd-text { font-size: 28px; text-shadow: 0 0 8px #ff8c1a; text-align:center; }
#shutdown .sd-sub { font-size: 14px; color:#cc7000; }

#screensaver {
  position: fixed; inset: 0; z-index: 250000;
  background: #000; display: none;
}
#screensaver.show { display: block; }
#screensaver canvas { width: 100%; height: 100%; display: block; }

/* BSOD easter egg */
#bsod {
  position: fixed; inset: 0; z-index: 400000;
  background: #0000aa; color: #fff;
  display: none; flex-direction: column; align-items: center; justify-content: center;
  font-family: "Lucida Console", monospace; font-size: 15px; line-height: 1.7; padding: 40px;
}
#bsod.show { display: flex; }
#bsod .bsod-h { background:#aaa; color:#0000aa; padding: 1px 8px; margin-bottom: 20px; }
#bsod .bsod-body { max-width: 640px; }
#bsod .blink { animation: blink 1s steps(2) infinite; }
@keyframes blink { 0%,50%{opacity:1} 51%,100%{opacity:0} }

.hidden { display: none !important; }

/* selection rubber band */
#rubber-band {
  position: absolute;
  border: 1px dotted #fff;
  background: rgba(255,255,255,.12);
  display: none;
  pointer-events: none;
  z-index: 1;
}