:root[data-theme='dark'] {
  color-scheme: dark;
  --bg: #0d1014;
  --panel: rgba(20, 25, 32, 0.86);
  --panel-solid: #141920;
  --line: rgba(255, 255, 255, 0.12);
  --control: rgba(255, 255, 255, 0.06);
  --control-hover: rgba(255, 255, 255, 0.12);
  --text: #e8ecf1;
  --muted: #97a2b0;
  --accent: #5bc0eb;
}

:root[data-theme='light'] {
  color-scheme: light;
  --bg: #eef1f5;
  --panel: rgba(255, 255, 255, 0.9);
  --panel-solid: #ffffff;
  --line: rgba(15, 23, 32, 0.14);
  --control: rgba(15, 23, 32, 0.05);
  --control-hover: rgba(15, 23, 32, 0.1);
  --text: #17202a;
  --muted: #5b6875;
  --accent: #0b6ea8;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

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

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
}

.topbar h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.topbar p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.topbar a {
  color: var(--accent);
  text-decoration: none;
}

.topbar a:hover {
  text-decoration: underline;
}

.topbar__stats {
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.stage {
  position: relative;
  flex: 1;
  min-height: 0;
}

#viewport {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.loader,
.error {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(420px, 84vw);
  transform: translate(-50%, -50%);
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  text-align: center;
}

.loader__label {
  margin: 0 0 12px;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.loader__track {
  height: 5px;
  overflow: hidden;
  border-radius: 3px;
  background: var(--control-hover);
}

.loader__bar {
  width: 0;
  height: 100%;
  background: var(--accent);
  transition: width 0.15s linear;
}

.loader__hint,
.panel__help {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.error {
  border-color: rgba(220, 90, 90, 0.5);
}

button {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--control);
  color: var(--text);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

button:hover {
  background: var(--control-hover);
}

button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.chip {
  min-width: 34px;
  padding: 4px 8px;
  line-height: 1.3;
}

.panel {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 216px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  backdrop-filter: blur(8px);
}

.panel-toggle {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
  width: 34px;
  height: 30px;
  padding: 0;
  background: var(--panel);
  backdrop-filter: blur(8px);
}

/* When the panel is open the toggle sits just left of it. */
.panel-toggle[aria-expanded='true'] {
  right: 244px;
}

.panel__row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.panel__row button {
  flex: 1;
}

.panel__toggle {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 4px 0;
  font-size: 12px;
  cursor: pointer;
}

.panel__slider {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}

.panel__slider input {
  width: 100%;
  margin-top: 6px;
  accent-color: var(--accent);
}

.panel__facts {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.panel__facts div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.panel__facts dt {
  color: var(--muted);
}

.panel__facts dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.dropzone {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--accent);
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
}

.dropzone[hidden] {
  display: none;
}

.dropzone__card {
  padding: 22px 26px;
  border-radius: 10px;
  background: var(--panel);
  text-align: center;
}

.dropzone__card p {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.dropzone__hint {
  margin-top: 6px !important;
  color: var(--muted);
  font-size: 12px !important;
  font-weight: 400 !important;
}

.panel__file {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.panel__file[hidden] {
  display: none;
}

.panel__filename {
  flex: 1;
  overflow: hidden;
  color: var(--accent);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.panel__file button {
  padding: 2px 7px;
  line-height: 1.2;
}

.panel__slider select {
  width: 100%;
  margin-top: 6px;
  padding: 5px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--control);
  color: var(--text);
  font: inherit;
  font-size: 12px;
}

.panel__slider[hidden] {
  display: none;
}

.panel__open {
  width: 100%;
  margin-top: 10px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(6, 9, 13, 0.62);
  backdrop-filter: blur(3px);
}

.modal[hidden] {
  display: none;
}

.modal__card {
  width: min(360px, 92vw);
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-solid);
  text-align: center;
}

.modal__card h2 {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 600;
}

/* The QR always renders dark-on-white: inverting it breaks many scanners. */
.modal__qr {
  padding: 12px;
  border-radius: 8px;
  background: #fff;
}

.modal__qr svg {
  display: block;
  width: 100%;
  height: auto;
  fill: #000;
  shape-rendering: crispEdges;
}

.modal__url {
  margin: 12px 0 14px;
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 640px) {
  .panel {
    top: auto;
    right: 12px;
    bottom: 12px;
    left: 12px;
    width: auto;
  }

  .panel-toggle,
  .panel-toggle[aria-expanded='true'] {
    top: 12px;
    right: 12px;
  }
}