:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --ink: #1d2430;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --border: #d7dbe0;
  --edited: #fff7d6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand { font-weight: 700; font-size: 18px; }
.actions { display: flex; gap: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: #eef1f5; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.05); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.status {
  padding: 8px 18px;
  font-size: 13px;
  color: var(--muted);
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.viewer {
  padding: 24px;
  text-align: center;     /* centers pages; overflow stays reachable */
  overflow-x: auto;
  min-height: 60vh;
}

.viewer.dragover { outline: 3px dashed var(--accent); outline-offset: -12px; }

.drop-hint {
  margin-top: 8vh;
  text-align: center;
  color: var(--muted);
}
.drop-icon { font-size: 42px; }
.muted { color: var(--muted); }

.page {
  position: relative;
  display: inline-block;
  text-align: left;
  margin: 0 auto 24px;
  background: #fff;
  box-shadow: 0 2px 14px rgba(0,0,0,0.12);
  border-radius: 2px;
}
.page canvas { display: block; }

/* Editable text layer */
.textLayer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  line-height: 1;
}
.textLayer .word {
  position: absolute;
  white-space: pre;
  transform-origin: 0 0;
  color: transparent;            /* original glyphs already painted on canvas */
  caret-color: var(--accent);
  cursor: text;
  outline: none;
  border-radius: 2px;
}
.textLayer .word:hover { background: rgba(37,99,235,0.10); }
.textLayer .word:focus { background: rgba(37,99,235,0.16); }
.textLayer .word.edited {
  color: #111;                   /* show new text; original is whited out on export */
  background: var(--edited);
}
.textLayer .word.deleted {
  background: #ffffff;           /* hide original glyphs in the preview */
  color: transparent !important;
  outline: 1.5px dashed #dc2626;
  cursor: pointer;
}

/* Floating delete / restore handle */
#delHandle {
  position: fixed;
  display: none;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin: -11px 0 0 -11px;       /* center on the box's top-right corner */
  padding: 0;
  border: none;
  border-radius: 50%;
  background: #dc2626;
  color: #fff;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.35);
  z-index: 100;
}
#delHandle:hover { filter: brightness(1.1); }
#delHandle.restore { background: var(--accent); }

.footer {
  padding: 14px 18px;
  font-size: 12px;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--panel);
}