:root {
  color-scheme: dark;
  --bg: #0b0b0d;
  --panel: rgba(20, 20, 24, 0.72);
  --panel-strong: rgba(31, 31, 36, 0.92);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f3f3f4;
  --muted: rgba(243, 243, 244, 0.72);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--text);
  background: var(--bg);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  color: var(--text);
  background: var(--panel-strong);
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

button:hover,
button:focus-visible {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(44, 44, 51, 0.96);
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

code {
  padding: 0.1rem 0.35rem;
  border-radius: 0.35rem;
  background: rgba(255, 255, 255, 0.1);
}

.viewer-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.floating-controls,
.toolbar-group {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.floating-controls {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  flex-direction: column;
  align-items: flex-start;
  pointer-events: none;
}

.zoom-level {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 2;
  margin: 0;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  min-width: 4.5rem;
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  pointer-events: auto;
  text-align: center;
}

.toolbar-group {
  padding: 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  pointer-events: auto;
}

.stage {
  position: relative;
  display: grid;
  place-items: center;
  margin: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, #111216, #09090b);
  background-size: 32px 32px, 32px 32px, auto;
  background-position: center center;
  touch-action: none;
  cursor: grab;
}

.stage[data-dragging='true'] {
  cursor: grabbing;
}

.empty-state {
  display: none;
}

.stage-image {
  transform-origin: center center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  user-select: none;
  -webkit-user-drag: none;
  will-change: transform;
  backface-visibility: hidden;
  image-rendering: high-quality;
}

@media (max-width: 900px) {
  .floating-controls {
    top: 0.75rem;
    left: 0.75rem;
  }

  .toolbar-group,
  .zoom-level {
    transform: scale(0.94);
  }

  .toolbar-group {
    transform-origin: top left;
  }

  .zoom-level {
    top: 0.75rem;
    right: 0.75rem;
    transform-origin: top right;
  }
}