/* ── CSS Custom Properties ── */
:root {
  --xp-title-gradient: linear-gradient(to bottom, #0058e6, #3a8cf2 40%, #1565d0 60%, #0050d0);
  --xp-title-inactive: linear-gradient(to bottom, #7a96c8, #a4b8d8 40%, #8aa4c4 60%, #7090b8);
  --xp-window-border: #0054e3;
  --xp-window-border-inactive: #7a96c8;
  --xp-window-body: #ece9d8;
  --xp-button-face: #ece9d8;
  --xp-button-highlight: #fff;
  --xp-button-shadow: #808080;
  --xp-button-dark-shadow: #404040;
  --xp-close-hover: #e04343;
  --xp-selection: #2b72d3;
  --xp-taskbar-gradient: linear-gradient(to bottom, #3168d5, #1941a5);
  --xp-taskbar-highlight: #4580e8;
  --xp-start-menu-right: #d3e5fa;
}

/* ── XP Window ── */
.xp-window {
  position: absolute;
  min-width: 300px;
  min-height: 200px;
  background: var(--xp-window-body);
  border: 3px solid var(--xp-window-border);
  border-top: none;
  border-radius: 8px 8px 0 0;
  box-shadow: 2px 2px 10px rgba(0,0,0,0.4);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.xp-window.opening {
  animation: windowOpen 0.2s ease-out forwards;
}

.xp-window.closing {
  animation: windowClose 0.15s ease-in forwards;
}

.xp-window.minimizing {
  animation: windowMinimize 0.2s ease-in forwards;
}

.xp-window.inactive {
  border-color: var(--xp-window-border-inactive);
}

@keyframes windowOpen {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes windowClose {
  from { opacity: 1; transform: scale(1); }
  to   { opacity: 0; transform: scale(0.95); }
}

@keyframes windowMinimize {
  from { opacity: 1; transform: scale(1); }
  to   { opacity: 0; transform: scale(0.6) translateY(100px); }
}

/* ── Title Bar ── */
.xp-window .title-bar {
  height: 28px;
  background: var(--xp-title-gradient);
  display: flex;
  align-items: center;
  padding: 0 3px 0 6px;
  cursor: default;
  flex-shrink: 0;
  border-radius: 6px 6px 0 0;
}

.xp-window.inactive .title-bar {
  background: var(--xp-title-inactive);
}

.title-bar .title-icon {
  width: 16px;
  height: 16px;
  margin-right: 4px;
  flex-shrink: 0;
}

.title-bar .title-text {
  color: #fff;
  font-size: 12px;
  font-weight: bold;
  text-shadow: 1px 1px 1px rgba(0,0,0,0.4);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Title Bar Buttons ── */
.title-bar .window-controls {
  display: flex;
  gap: 2px;
  margin-left: auto;
}

.title-bar .window-controls button {
  width: 21px;
  height: 21px;
  background: linear-gradient(to bottom, #3c8cf4, #2070dc);
  border: 1px solid rgba(0,0,0,0.3);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 10px;
  font-weight: bold;
  line-height: 1;
  position: relative;
}

.title-bar .window-controls button:hover {
  background: linear-gradient(to bottom, #5ca8ff, #3888f0);
}

.title-bar .window-controls button:active {
  background: linear-gradient(to bottom, #1858b8, #1050a0);
}

.title-bar .window-controls .btn-close:hover {
  background: var(--xp-close-hover);
}

.title-bar .window-controls .btn-minimize::after { content: '–'; }
.title-bar .window-controls .btn-maximize::after { content: '□'; font-size: 11px; }
.title-bar .window-controls .btn-close::after { content: '✕'; font-size: 9px; }

/* ── Window Body ── */
.xp-window .window-body {
  flex: 1;
  overflow: auto;
  padding: 8px;
}

/* XP-style scrollbar */
.window-body::-webkit-scrollbar {
  width: 17px;
}

.window-body::-webkit-scrollbar-track {
  background: #f1efe2;
  border-left: 1px solid #d2ceb6;
}

.window-body::-webkit-scrollbar-thumb {
  background: linear-gradient(to right, #ece9d8, #d8d4c0);
  border: 1px solid #a09e8c;
  border-radius: 0;
}

.window-body::-webkit-scrollbar-button {
  height: 17px;
  background: #ece9d8;
  border: 1px solid #a09e8c;
}

/* ── Menu Bar (optional for windows that need it) ── */
.xp-window .menu-bar {
  display: flex;
  gap: 0;
  background: var(--xp-window-body);
  border-bottom: 1px solid #aaa;
  padding: 2px 4px;
  font-size: 11px;
}

.xp-window .menu-bar button {
  padding: 2px 8px;
  border-radius: 2px;
}

.xp-window .menu-bar button:hover {
  background: var(--xp-selection);
  color: #fff;
}

/* ── Address Bar (explorer-style) ── */
.xp-window .address-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 6px;
  background: var(--xp-window-body);
  border-bottom: 1px solid #aaa;
  font-size: 11px;
}

.xp-window .address-bar .address-label {
  color: #000;
}

.xp-window .address-bar .address-input {
  flex: 1;
  padding: 2px 4px;
  border: 1px solid #7f9db9;
  background: #fff;
  font-size: 11px;
  font-family: Tahoma, sans-serif;
}

/* ── Resize Handle ── */
.xp-window .resize-handle {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 16px;
  height: 16px;
  cursor: nwse-resize;
}

/* ── XP Button ── */
.xp-btn {
  padding: 4px 16px;
  background: var(--xp-button-face);
  border: 1px solid var(--xp-button-shadow);
  border-top-color: var(--xp-button-highlight);
  border-left-color: var(--xp-button-highlight);
  border-radius: 3px;
  font-size: 11px;
  cursor: pointer;
  color: #000;
}

.xp-btn:hover {
  background: #f0ede0;
}

.xp-btn:active {
  border-color: var(--xp-button-highlight);
  border-top-color: var(--xp-button-shadow);
  border-left-color: var(--xp-button-shadow);
  padding: 5px 15px 3px 17px;
}

/* ── Status Bar ── */
.xp-window .status-bar {
  display: flex;
  align-items: center;
  height: 22px;
  padding: 0 6px;
  background: #ece9d8;
  border-top: 1px solid #aaa;
  font-size: 11px;
  color: #444;
  flex-shrink: 0;
}

/* ── CRT Filter ── */
body.crt-on::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 99999;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 1px,
    rgba(0, 0, 0, 0.03) 1px,
    rgba(0, 0, 0, 0.03) 2px
  );
  mix-blend-mode: multiply;
}

body.crt-on {
  animation: crtFlicker 0.05s infinite alternate;
}

@keyframes crtFlicker {
  from { filter: brightness(1); }
  to   { filter: brightness(0.995); }
}