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

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
}

.desktop {
  position: relative;
  height: calc(100vh - var(--taskbar-h));
  background:
    radial-gradient(ellipse at 20% 10%, rgba(180, 69, 26, 0.08), transparent 55%),
    radial-gradient(ellipse at 85% 75%, rgba(42, 37, 31, 0.06), transparent 50%),
    linear-gradient(165deg, #f0e9db 0%, var(--paper) 45%, #e3dac8 100%);
  overflow: hidden;
}

.desktop::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");
  pointer-events: none;
}

.desktop-brand {
  position: absolute;
  top: 1.25rem;
  left: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  user-select: none;
  z-index: 0;
}

.brand-mark {
  color: var(--rust);
  font-size: 1rem;
}

.window-layer {
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* —— Windows —— */

.window {
  position: absolute;
  display: flex;
  flex-direction: column;
  min-width: 280px;
  min-height: 180px;
  border: 1px solid var(--line);
  border-radius: var(--win-radius);
  background: var(--panel);
  box-shadow: 0 14px 40px var(--shadow);
  overflow: hidden;
}

.window.minimized {
  visibility: hidden;
  pointer-events: none;
}

.window.focused {
  border-color: color-mix(in srgb, var(--rust) 55%, var(--line));
  box-shadow: 0 18px 48px var(--shadow), 0 0 0 1px var(--rust-dim);
}

.window-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--titlebar-h);
  padding: 0 0.35rem 0 0.75rem;
  background: linear-gradient(180deg, #f7f2e8, #ece4d6);
  border-bottom: 1px solid var(--line);
  cursor: grab;
  user-select: none;
}

.window.focused .window-titlebar {
  background: linear-gradient(180deg, #2f2a24, var(--head));
  color: #f3eee4;
  border-bottom-color: #3f3830;
}

.window-title {
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.window-controls {
  display: flex;
  gap: 0.25rem;
}

.win-btn {
  width: 28px;
  height: 24px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: inherit;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}

.win-btn:hover {
  background: rgba(0, 0, 0, 0.08);
}

.window.focused .win-btn:hover {
  background: rgba(255, 255, 255, 0.12);
}

.win-close:hover {
  background: var(--rust) !important;
  color: #fff;
  border-color: var(--rust-light);
}

.window-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  background: var(--panel);
}

.window-resize {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 16px;
  height: 16px;
  cursor: nwse-resize;
  background: linear-gradient(135deg, transparent 50%, var(--line) 50%, var(--line) 58%, transparent 58%);
}

.window.focused .window-resize {
  background: linear-gradient(135deg, transparent 50%, var(--rust) 50%, var(--rust) 58%, transparent 58%);
}

/* —— Taskbar —— */

.taskbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--taskbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.75rem;
  background: var(--taskbar);
  border-top: 1px solid var(--taskbar-line);
  color: #e8dfd0;
  z-index: 10000;
}

.taskbar-apps {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  min-width: 0;
  overflow-x: auto;
}

.taskbar-btn,
.taskbar-window {
  border: 1px solid transparent;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: inherit;
  cursor: pointer;
  font: inherit;
}

.taskbar-btn {
  width: 40px;
  height: 36px;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
}

.taskbar-btn.running {
  border-color: rgba(255, 255, 255, 0.12);
}

.taskbar-btn.active,
.taskbar-window.active {
  background: var(--rust);
  border-color: var(--rust-light);
}

.taskbar-btn.minimized,
.taskbar-window.minimized {
  opacity: 0.55;
}

.taskbar-window {
  max-width: 9rem;
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.taskbar-end {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.taskbar-hub {
  color: #d4c9b8;
  text-decoration: none;
  font-size: 0.82rem;
  padding: 0.35rem 0.55rem;
  border-radius: 4px;
}

.taskbar-hub:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.taskbar-clock {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: #f3eee4;
  min-width: 5.5rem;
  text-align: right;
}

/* —— Notes —— */

.app-notes {
  height: 100%;
}

.notes-editor {
  width: 100%;
  height: 100%;
  min-height: 140px;
  border: 0;
  resize: none;
  padding: 0.85rem 1rem;
  font: 0.95rem/1.55 var(--font);
  color: var(--ink);
  background: var(--panel);
}

.notes-editor:focus {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--focus-ring);
}

/* —— Finder —— */

.app-finder {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.finder-toolbar {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--line);
  background: #f7f2e8;
}

.finder-up {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  padding: 0.2rem 0.55rem;
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.finder-up:disabled {
  opacity: 0.4;
  cursor: default;
}

.finder-up:not(:disabled):hover {
  border-color: var(--rust);
  color: var(--rust);
}

.finder-path {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}

.finder-list {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0;
  flex: 1;
  overflow: auto;
}

.finder-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.85rem;
  cursor: default;
  user-select: none;
}

.finder-item:hover {
  background: var(--rust-dim);
}

.finder-item.selected {
  background: color-mix(in srgb, var(--rust) 22%, transparent);
}

.finder-icon {
  width: 1.25rem;
  text-align: center;
}

.finder-name {
  font-size: 0.9rem;
}

.finder-preview {
  border-top: 1px solid var(--line);
  max-height: 42%;
  overflow: auto;
  background: #faf6ee;
}

.finder-file-content {
  margin: 0;
  padding: 0.75rem 1rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

.finder-error {
  padding: 1rem;
  color: var(--rust);
}

/* —— Terminal —— */

.app-terminal {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--term-bg);
  color: var(--term-fg);
}

.term-output {
  flex: 1;
  overflow: auto;
  padding: 0.75rem 0.85rem 0.35rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.45;
}

.term-line {
  white-space: pre-wrap;
  word-break: break-word;
}

.term-line.term-echo {
  color: #9a9082;
}

.term-line.term-err {
  color: #e8836b;
}

.term-form {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.75rem 0.65rem;
  border-top: 1px solid #2a2620;
}

.term-prompt {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--term-prompt);
  white-space: nowrap;
}

.term-input {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--term-fg);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.term-input:focus {
  outline: none;
}