*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --win-bg: #008080;
  --win-face: #d4d0c8;
  --win-face-dark: #c0bcb4;
  --win-shadow-dark: #808080;
  --win-shadow-darker: #404040;
  --win-highlight: #ffffff;
  --win-highlight-dim: #e4e0d8;
  --win-title-active-start: #000080;
  --win-title-active-end: #1084d0;
  --win-title-inactive: #808080;
  --win-title-text: #ffffff;
  --win-text: #000000;
  --win-text-disabled: #808080;
  --win-selected-bg: #000080;
  --win-selected-text: #ffffff;
  --win-input-bg: #ffffff;
  --win-notice-bg: #ffffc0;
  --win-notice-border: #808000;
  --win-notice-text: #000000;
  --font-ui: 'Tahoma', 'MS Sans Serif', sans-serif;
  --font-mono: 'Courier New', monospace;
  --font-size-ui: 11px;
  --font-size-title: 11px;
}

body.dark-mode {
  --win-bg: #1a1a2e;
  --win-face: #2a2a2a;
  --win-face-dark: #222222;
  --win-shadow-dark: #111111;
  --win-shadow-darker: #080808;
  --win-highlight: #4a4a4a;
  --win-highlight-dim: #333333;
  --win-title-active-start: #000080;
  --win-title-active-end: #1084d0;
  --win-title-inactive: #444444;
  --win-title-text: #ffffff;
  --win-text: #e0e0e0;
  --win-text-disabled: #555555;
  --win-selected-bg: #000080;
  --win-selected-text: #ffffff;
  --win-input-bg: #1e1e1e;
  --win-notice-bg: #2a2a00;
  --win-notice-border: #666600;
  --win-notice-text: #e0e0c0;
}

html, body {
  width: 100%;
  height: 100%;
  background: var(--win-bg);
  font-family: var(--font-ui);
  font-size: var(--font-size-ui);
  color: var(--win-text);
  overflow: hidden;
  user-select: none;
  transition: background 0.2s;
}

button {
  font-family: var(--font-ui);
  font-size: var(--font-size-ui);
  cursor: pointer;
  color: var(--win-text);
}

input, select, textarea {
  font-family: var(--font-ui);
  font-size: var(--font-size-ui);
  color: var(--win-text);
  background: var(--win-input-bg);
}

.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

::-webkit-scrollbar {
  width: 16px;
  height: 16px;
}

::-webkit-scrollbar-track {
  background: var(--win-face);
}

::-webkit-scrollbar-thumb {
  background: var(--win-face);
  border-style: solid;
  border-width: 2px;
  border-color: var(--win-highlight) var(--win-shadow-darker) var(--win-shadow-darker) var(--win-highlight);
}

::-webkit-scrollbar-button {
  background: var(--win-face);
  border-style: solid;
  border-width: 2px;
  border-color: var(--win-highlight) var(--win-shadow-darker) var(--win-shadow-darker) var(--win-highlight);
  width: 16px;
  height: 16px;
}

::-webkit-scrollbar-corner {
  background: var(--win-face);
}

#security-notice {
  background: var(--win-notice-bg);
  border-bottom: 1px solid var(--win-notice-border);
  color: var(--win-notice-text);
  padding: 4px 12px;
  font-size: 11px;
  font-family: var(--font-ui);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  z-index: 9999;
  position: relative;
}

#security-notice button {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 11px;
  font-family: var(--font-ui);
  padding: 0 4px;
  color: var(--win-notice-text);
}