:root {
  --tsa-panel-bg: rgba(8, 10, 22, 0.82);
  --tsa-panel-border: rgba(255, 255, 255, 0.1);
  --tsa-panel-highlight: rgba(255, 255, 255, 0.65);
  --tsa-panel-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  --tsa-icon-size: 84px;
  --tsa-icon-gap: 28px;
  --tsa-font: 'Space Grotesk', 'Inter', 'Segoe UI', system-ui, sans-serif;
}

#tsa-desktop-root {
  position: relative;
  min-height: 100vh;
  width: 100%;
  z-index: 1;
  font-family: var(--tsa-font);
}

.tsa-panel-layer,
.tsa-icon-layer,
.tsa-dock {
  position: absolute;
  inset: 0;
}

.tsa-panel-layer {
  z-index: 2;
  pointer-events: auto;
}

.tsa-icon-layer {
  z-index: 1;
  padding: 32px;
  display: block;
  pointer-events: none;
}

.tsa-dock {
  inset: auto 32px 28px 32px;
  height: 64px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 16px;
  pointer-events: auto;
  z-index: 3;
}

.tsa-dock-item {
  min-width: 110px;
  height: 48px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(8, 10, 22, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #f4f4ff;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  transition: transform 120ms ease, background 120ms ease;
}

.tsa-dock-item:hover {
  transform: translateY(-2px);
  background: rgba(9, 14, 34, 0.68);
}

.tsa-panel {
  position: absolute;
  border-radius: 18px;
  border: 1px solid var(--tsa-panel-border);
  background: var(--tsa-panel-bg);
  color: #f8f8ff;
  backdrop-filter: blur(12px);
  box-shadow: var(--tsa-panel-shadow);
  overflow: hidden;
  pointer-events: auto;
  user-select: none;
}

.tsa-panel:focus-within,
.tsa-panel.is-focused {
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 25px 70px rgba(6, 12, 34, 0.65);
}

.tsa-panel.is-minimized-titlebar {
  overflow: visible;
}

.tsa-window-titlebar {
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: grab;
  background: linear-gradient(120deg, rgba(32, 26, 54, 0.95), rgba(15, 79, 110, 0.85));
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.tsa-window-titlebar:active {
  cursor: grabbing;
}

.tsa-window-controls {
  display: flex;
  gap: 8px;
}

.tsa-window-button {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
}

.tsa-window-button:hover {
  transform: scale(1.1);
  background: var(--tsa-panel-highlight);
}

.tsa-window-content {
  position: relative;
  padding: 16px 18px;
  overflow: auto;
  height: calc(100% - 40px);
}

.tsa-window-content p {
  margin: 0 0 0.75rem;
  line-height: 1.5;
}

.tsa-window-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
}

.tsa-window-list li {
  padding: 0.4rem 0.6rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
}

.tsa-window-resize {
  position: absolute;
  width: 16px;
  height: 16px;
  right: 4px;
  bottom: 4px;
  cursor: nwse-resize;
  border-bottom-right-radius: 14px;
  background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.55));
}

.tsa-banner {
  padding: 14px 18px;
  border-radius: 16px;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.06);
  border: 1px dashed rgba(255, 255, 255, 0.35);
}

.tsa-icon {
  position: absolute;
  width: var(--tsa-icon-size);
  height: var(--tsa-icon-size);
  border-radius: 18px;
  border: 1px solid transparent;
  background: rgba(8, 14, 34, 0.35);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
  color: #fefefe;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease;
  pointer-events: auto;
}

.tsa-icon:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.28);
}

.tsa-icon-image {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background-size: cover;
  background-position: center;
  background-color: rgba(255, 255, 255, 0.08);
}

.tsa-icon-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  pointer-events: none;
}

.tsa-icon-glyph {
  font-size: 1.5rem;
}

@media (max-width: 900px) {
  .tsa-icon-layer {
    position: static;
    padding: 18px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
    grid-gap: 18px;
    pointer-events: auto;
  }
  .tsa-icon {
    position: relative;
  }
  .tsa-panel {
    transform-origin: top left;
  }
}