:root {
  --window-border-light: #add8e6;
  --window-border-dark: #7777ea;
  --window-background: #ffffff;

  --interactive-background-light: #e0e0e0;
  --interactive-background-dark: #c0c0c0;
  --interactive-border-light: #eeeeee;
  --interactive-border-dark: #a0a0a0;
  --interactive-select: #dddddd;

  --text: #555555;
  --text-light: #ffffff;
  --link: #0000ee;
  --link-hover: #33008b;

  --danger: #ff4c4c;
  --warning: #ffcc00;
  --ok: #4caf50;
}

/* windows */

window,
window-static {
  background-color: var(--window-background);
  border: 5px solid var(--window-border-light);
  border-top: 25px solid var(--window-border-light);
  border-right: 5px solid var(--window-border-dark);
  border-bottom: 5px solid var(--window-border-dark);
  padding: 1rem;
  display: block;
  margin: 1.5rem;
  position: relative;
  color: var(--text);
}

window a {
  color: var(--link);
}

window a:hover {
  color: var(--link-hover);
}

window-group {
  display: flex;
  flex-direction: column;
}

/* window controls */

window-controls {
  position: absolute;
  top: -23.5px;
  right: 0;
  display: flex;
  gap: 0.25rem;
  z-index: 10;
}

window-controls button {
  background: none;
  width: 21.5px;
  height: 21.5px;
  background-color: var(--interactive-background-light);
  border: 1px solid var(--interactive-border-light);
  border-right: 2px solid var(--interactive-border-dark);
  border-bottom: 2px solid var(--interactive-border-dark);
  padding: 0;
  margin: 0;
}

window-controls button:hover {
  background-color: var(--interactive-background-dark);
  border-color: var(--interactive-border-dark);
  border-right: 2px solid var(--interactive-border-select);
  border-bottom: 2px solid var(--interactive-border-select);
}

/* Window title */

window-title {
  position: absolute;
  top: -23.5px;
  left: 0;
  width: 100%;
  background: linear-gradient(
    to left,
    var(--window-border-light),
    var(--window-border-dark)
  );
  color: white;
}

/* maximized window */

window.maximized {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  border-radius: 0;
  box-sizing: border-box;
  z-index: 1000;
}

/* taskbar */

taskbar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  display: flex;
  height: 2rem;
  background-color: var(--interactive-background-light);
  align-items: center;
  z-index: 1001;
  overflow-x: scroll;
  overflow-y: hidden;
}

taskbar .tasks {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  height: 100%;
  gap: 0.25rem;
  align-items: center;
  min-width: max-content;
  padding-right: 4rem;
  padding-left: 2.5rem;
}

taskbar ul li {
  margin: 0;
  padding: 0;
  display: flex;
  height: 90%;
  border: 1px solid var(--interactive-border-light);
  border-right: 2px solid var(--interactive-border-dark);
  border-bottom: 2px solid var(--interactive-border-dark);
  align-items: center;
  padding: 0 0.5rem;
}

taskbar ul li:hover {
  background-color: var(--interactive-background-dark);
  border-color: var(--interactive-background-dark);
  border-right: 2px solid var(--interactive-border-select);
  border-bottom: 2px solid var(--interactive-border-select);
}

taskbar ul li .close-btn {
  background: none;
  border: none;
  font-weight: bold;
}

taskbar ul li .close-btn:hover {
  color: var(--danger);
}

taskbar .icon {
  margin: 0;
  padding: 0;
  height: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 2rem;
  height: 2rem;
  z-index: 1002;
}

taskbar .time {
  justify-self: flex-end;
  margin-left: auto;
  border-left: 1px solid var(--interactive-border-dark);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  position: fixed;
  bottom: 0;
  right: 0;
  height: 2rem;
  background-color: var(--interactive-background-light);
  z-index: 1002;
}

taskbar .start-menu {
  display: none;
  position: fixed;
  bottom: 2rem;
  background-color: var(--interactive-background-dark);
  border: 1px solid var(--interactive-border-light);
  height: 150px;
  overflow-y: scroll;
  padding-left: 2rem;
  background-size: cover;
}

taskbar .start-menu h2 {
  padding: 0;
  margin: 0;
  background-color: var(--interactive-background-light);
  text-align: center;
  border-bottom: 1px solid var(--interactive-border-dark);
}

taskbar .start-menu ul {
  background-color: var(--interactive-background-light);
  list-style-type: none;
  margin: 0;
  padding: 0;
}