:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f3f5f8;
  color: #111827;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --border: #d8dee8;
  --border-strong: #bcc6d5;
  --text: #111827;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-soft: #eaf1ff;
  --danger: #e11d48;
  --shadow: 0 18px 48px rgba(15, 23, 42, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overscroll-behavior: none;
  background: #f3f5f8;
}

button,
input,
select {
  font: inherit;
}

button {
  min-height: 32px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #ffffff;
  color: var(--text);
  padding: 0 10px;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0;
  white-space: nowrap;
}

button:hover {
  border-color: var(--border-strong);
  background: #f8fafc;
}

button:active {
  transform: translateY(1px);
}

button[hidden],
[hidden] {
  display: none !important;
}

.app {
  display: grid;
  min-height: 100vh;
}

.annotation-panel {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100vh;
  overflow: hidden;
}

.toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  min-height: 56px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  overflow: visible;
}

.brand-group,
.toolbar-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: max-content;
}

.brand-group {
  gap: 8px;
  padding-right: 4px;
}

.role-chip {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border: 1px solid #c7d2fe;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #1d4ed8;
  padding: 0 9px;
  font-size: 11px;
  font-weight: 750;
}

.toolbar-group {
  min-height: 38px;
  border: 1px solid #e3e8f0;
  border-radius: 8px;
  background: #fbfcfe;
  padding: 3px;
}

.toolbar-spacer {
  flex: 1 1 auto;
  min-width: 20px;
}

.action-group {
  margin-left: auto;
}

.page-status,
.save-status {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.save-status {
  max-width: 240px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tool-button[aria-pressed="true"] {
  border-color: #93b4ff;
  background: var(--accent-soft);
  color: #1d4ed8;
}

.icon-button {
  padding: 0 9px;
}

.secondary-button {
  background: #ffffff;
}

.primary-button {
  border-color: #1d4ed8;
  background: var(--accent);
  color: #ffffff;
}

.primary-button:hover {
  border-color: #1e40af;
  background: #1d4ed8;
}

.compact-field {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  padding: 0 7px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.compact-field input[type="color"] {
  width: 28px;
  height: 24px;
  border: 0;
  padding: 0;
  background: transparent;
}

.compact-field input[type="range"] {
  width: 80px;
  accent-color: var(--accent);
}

.compact-field select,
.owner-controls select,
.owner-controls input,
.share-link-field input {
  min-height: 30px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #ffffff;
  color: var(--text);
  padding: 0 8px;
  font-size: 12px;
}

.stage {
  position: relative;
  display: grid;
  place-items: start;
  min-height: 0;
  padding: 16px;
  overflow: auto;
  touch-action: none;
  overscroll-behavior: contain;
  user-select: none;
  -webkit-user-select: none;
  background:
    linear-gradient(#eef2f7 1px, transparent 1px),
    linear-gradient(90deg, #eef2f7 1px, transparent 1px),
    #f8fafc;
  background-size: 24px 24px;
}

#baseImage,
#baseCanvas,
#drawCanvas {
  grid-area: 1 / 1;
}

#baseImage {
  display: block;
  user-select: none;
  -webkit-user-select: none;
  pointer-events: none;
}

#drawCanvas {
  position: relative;
  z-index: 1;
  display: block;
  max-width: none;
  max-height: none;
  touch-action: none;
  cursor: crosshair;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

#baseCanvas {
  display: block;
  max-width: none;
  max-height: none;
  background-color: #f8fafc;
  pointer-events: none;
}

.share-panel {
  position: absolute;
  top: 68px;
  right: 16px;
  z-index: 5;
  display: grid;
  gap: 14px;
  width: min(420px, calc(100vw - 32px));
  max-height: calc(100vh - 88px);
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
  padding: 14px;
}

.share-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.share-panel h2 {
  margin: 0;
  font-size: 16px;
  line-height: 1.2;
}

.share-link-field {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  align-items: center;
}

.share-link-field span {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}

.share-link-field input {
  min-width: 0;
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.owner-controls {
  display: grid;
  grid-template-columns: minmax(84px, 1fr) minmax(96px, 1fr) auto;
  gap: 8px;
  align-items: end;
  padding-top: 2px;
}

.owner-controls label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}

.qr-dialog {
  width: min(360px, calc(100vw - 32px));
  max-width: calc(100vw - 32px);
  max-height: calc(100vh - 32px);
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0;
}

.qr-dialog::backdrop {
  background: rgba(15, 23, 42, 0.42);
}

.qr-dialog form {
  display: grid;
  gap: 12px;
  min-width: 0;
  padding: 16px;
}

.qr-dialog form > * {
  min-width: 0;
}

.qr-dialog h2 {
  margin: 0;
  font-size: 18px;
}

.qr-dialog img {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #ffffff;
}

#qrStatus {
  display: block;
  overflow-wrap: anywhere;
  word-break: break-word;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.qr-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

@media (max-width: 760px) {
  .toolbar {
    align-items: stretch;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px;
  }

  .toolbar-spacer {
    display: none;
  }

  .save-status {
    order: 10;
    min-width: 140px;
  }

  .tool-group {
    order: 20;
  }

  .action-group {
    order: 30;
    margin-left: 0;
  }

  .compact-field input[type="range"] {
    width: 68px;
  }

  .stage {
    padding: 10px;
  }

  .share-panel {
    top: 62px;
    right: 8px;
    width: calc(100vw - 16px);
    max-height: calc(100vh - 78px);
  }

  .owner-controls {
    grid-template-columns: 1fr 1fr;
  }

  .owner-controls button {
    grid-column: 1 / -1;
  }
}