/* ── Reset & base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #1a1a2e;
  --surface:   #16213e;
  --surface2:  #0f3460;
  --gold:      #c8a84b;
  --gold-dim:  #8a6f2e;
  --text:      #ddd4bb;
  --text-dim:  #7a7260;
  --highlight: #ffe066;
  --border:    #2e2e4e;
  --toolbar-h: 52px;
  --footer-h:  34px;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 14px;
  overflow: hidden;
}

/* ── App shell ────────────────────────────────────────────────── */
#app {
  display: grid;
  grid-template-rows: var(--toolbar-h) auto 1fr var(--footer-h);
  height: 100vh;
}

/* ── Override dropdown ────────────────────────────────────────── */
#override-wrap {
  position: relative;
  flex-shrink: 0;
}

#override-menu {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 500;
  background: var(--surface);
  border: 1px solid var(--gold-dim);
  border-radius: 4px;
  min-width: 160px;
  padding: 4px 0;
  box-shadow: 0 4px 14px rgba(0,0,0,0.45);
}

#override-menu.open { display: block; }

.override-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  font-family: 'Georgia', serif;
  font-size: 11px;
  color: var(--text-dim);
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: 0.03em;
  transition: background 0.1s, color 0.1s;
}
.override-item:hover { background: var(--surface2); color: var(--gold); }
.override-item input[type="file"] { display: none; }

/* ── Toolbar ──────────────────────────────────────────────────── */
#toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  background: var(--surface);
  border-bottom: 2px solid var(--gold-dim);
  overflow: visible;   /* must be visible so the Override dropdown can escape the toolbar */
  flex-wrap: nowrap;
  position: relative;
  z-index: 100;        /* sit above pass2-banner and panel headers */
}

#toolbar h1 {
  font-size: 13px;
  font-weight: normal;
  letter-spacing: 0.1em;
  color: var(--gold);
  white-space: nowrap;
  flex-shrink: 0;
}

.divider { width: 1px; height: 26px; background: var(--border); flex-shrink: 0; margin: 0 2px; }

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.toolbar-group .lbl {
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.file-btn {
  display: inline-block;
  padding: 3px 8px;
  background: var(--surface2);
  border: 1px solid var(--gold-dim);
  border-radius: 3px;
  color: var(--text);
  font-size: 10px;
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: border-color 0.15s, background 0.15s;
  white-space: nowrap;
}
.file-btn:hover { border-color: var(--gold); background: #1a2a50; }
.file-btn input[type="file"] { display: none; }

.tb-btn {
  padding: 3px 9px;
  background: transparent;
  border: 1px solid var(--gold-dim);
  border-radius: 3px;
  color: var(--text-dim);
  font-size: 10px;
  font-family: inherit;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}
.tb-btn:hover { border-color: var(--gold); color: var(--gold); background: rgba(200,168,75,0.08); }
a.tb-btn { text-decoration: none; display: inline-flex; align-items: center; }

#scale-select {
  background: var(--surface2);
  border: 1px solid var(--gold-dim);
  border-radius: 3px;
  color: var(--text);
  font-size: 10px;
  font-family: inherit;
  padding: 2px 4px;
  cursor: pointer;
}

/* ── Main panels ──────────────────────────────────────────────── */
#panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
}

.panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--border);
}
.panel:last-child { border-right: none; }

.panel-header {
  padding: 5px 10px;
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--gold-dim);
  text-transform: uppercase;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-header .ph-title { flex: 1; }

/* page navigation */
.page-nav { display: flex; align-items: center; gap: 4px; }
.page-nav button {
  background: var(--surface2); border: 1px solid var(--gold-dim);
  border-radius: 2px; color: var(--text); font-size: 10px;
  padding: 1px 6px; cursor: pointer; line-height: 1.5;
}
.page-nav button:hover { border-color: var(--gold); color: var(--gold); }
.page-nav button:disabled { opacity: 0.3; cursor: default; }
.page-nav input[type="number"] {
  width: 42px; text-align: center;
  background: var(--surface2); border: 1px solid var(--gold-dim);
  border-radius: 2px; color: var(--text); font-size: 9px; padding: 2px 3px;
}
#page-label { font-size: 9px; color: var(--text-dim); white-space: nowrap; }

.panel-body {
  flex: 1;
  overflow: auto;
  position: relative;
}

/* ── Left panel: PDF canvas + overlay ────────────────────────── */
#image-panel-body {
  position: relative;
  scrollbar-gutter: stable;  /* reserve scrollbar space always — prevents layout shift on zoom */
}

#pdf-container {
  position: relative;
  display: block;      /* block instead of inline-block — fills full panel width cleanly */
  width: 100%;
  min-height: 100%;    /* always occupies the full panel height so nothing else renders below */
}

#pdf-canvas {
  display: block;
  user-select: none;
  background: #e8e0cc;
}

#overlay {
  position: absolute;
  top: 0; left: 0;
  pointer-events: none;
}

/* noinspection CssUnusedSymbol */
.word-box {
  position: absolute;
  border: 1px solid transparent;
  border-radius: 1px;
  cursor: crosshair;
  pointer-events: all;
  transition: background 0.07s, border-color 0.07s;
}
/* noinspection CssUnusedSymbol */
.word-box:hover,
/* noinspection CssUnusedSymbol */
.word-box.highlight {
  background: rgba(255, 224, 102, 0.38);
  border-color: var(--highlight);
}

.panel-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 12px;
  color: var(--text-dim);
  font-size: 13px;
  font-style: italic;
  padding: 40px;
  text-align: center;
}
.panel-placeholder em {
  color: var(--gold-dim);
  font-size: 11px;
  font-style: normal;
  letter-spacing: 0.04em;
}

.spinner {
  width: 22px; height: 22px;
  border: 2px solid var(--surface2);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Footer ───────────────────────────────────────────────────── */
#footer {
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 10px;
  color: var(--text-dim);
}
#status-msg { flex: 1; font-style: italic; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

/* ── Scrollbars ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-dim); }

/* ── Active toggle button state (sync-scroll, edit mode) ─────── */
.tb-btn.active { border-color: var(--gold); color: var(--gold); }

/* ── Flag buttons ─────────────────────────────────────────────── */
.flag-btn { font-size: 9px; padding: 2px 7px; }
.flag-btn.active { border-color: var(--gold); color: var(--gold); }
/* ── Footer extras ────────────────────────────────────────────── */
#flags-summary { color: var(--gold-dim); letter-spacing: 0.04em; white-space: nowrap; font-size: 10px; }
#kbd-hint      { color: var(--text-dim); font-size: 9px; white-space: nowrap; opacity: 0.7; }


/* ── Zoom indicator in left panel header ─────────────────────────── */
#zoom-label {
  font-size: 9px; color: var(--gold-dim); letter-spacing: 0.06em;
  white-space: nowrap; min-width: 34px; text-align: right;
}
#btn-zoom-reset {
  padding: 1px 6px; font-size: 9px; font-family: inherit;
  background: transparent; border: 1px solid var(--gold-dim);
  border-radius: 2px; color: var(--text-dim); cursor: pointer;
  letter-spacing: 0.04em; white-space: nowrap;
  transition: border-color 0.12s, color 0.12s;
}
#btn-zoom-reset:hover { border-color: var(--gold); color: var(--gold); }

/* ── Role switcher ────────────────────────────────────────────────── */
#role-select {
  background: var(--surface2);
  border: 1px solid var(--gold-dim);
  border-radius: 3px;
  color: var(--text);
  font-size: 10px;
  font-family: inherit;
  padding: 2px 4px;
  cursor: pointer;
}

/* ── Pass 2 review banner ─────────────────────────────────────────── */
#pass2-banner {
  display: none;
  align-items: center;
  padding: 0 14px;
  background: #2e2010;
  border-bottom: 1px solid #c08020;
  font-size: 11px;
  color: #e8b848;
  letter-spacing: 0.04em;
  height: 26px;
  overflow: hidden;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Pass 2 revert bar ────────────────────────────────────────── */
#pass2-revert-bar {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
#pass2-revert-bar .rv-label {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  flex: 1;
}
#pass2-revert-bar .rv-btn {
  font-size: 10px;
  font-family: 'Georgia', serif;
  padding: 3px 10px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  letter-spacing: 0.04em;
  transition: border-color 0.15s, color 0.15s;
}
#pass2-revert-bar .rv-btn:hover { border-color: var(--gold-dim); color: var(--gold); }
#pass2-revert-bar .rv-btn.danger { border-color: var(--red, #d05050); color: var(--red, #d05050); }
#pass2-revert-bar .rv-btn.danger:hover { border-color: var(--red, #d05050); color: var(--text); }

/* ── Pass 2 change summary panel ─────────────────────────────── */
#pass2-change-summary {
  display: none;
  padding: 10px 20px;
  background: var(--surface2);
  border-bottom: 1px solid var(--gold-dim);
  flex-shrink: 0;
  font-size: 11px;
}
#pass2-change-summary .cs-title {
  font-size: 10px;
  color: var(--gold-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
#pass2-change-summary .cs-list {
  color: var(--text-dim);
  line-height: 1.8;
  max-height: 100px;
  overflow-y: auto;
  margin-bottom: 8px;
  font-family: Georgia, serif;
}
#pass2-change-summary .cs-changed { color: #e8a838; }
#pass2-change-summary .cs-added   { color: #4caf70; }
#pass2-change-summary .cs-deleted { color: #d05050; }
#pass2-change-summary .cs-actions { display: flex; gap: 8px; }
.cs-revert-btn {
  font-size: 10px;
  font-family: Georgia, serif;
  padding: 3px 10px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  letter-spacing: 0.04em;
}
.cs-revert-btn:hover { border-color: var(--gold-dim); color: var(--gold); }
.cs-revert-btn.danger { border-color: #d05050; color: #d05050; }
.cs-revert-btn.danger:hover { border-color: #e07070; color: #e07070; }

/* ── Plain-text edit surface ──────────────────────────────────── */
#text-panel-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

#editor-wrap {
  display: flex;
  flex-direction: row;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

#line-numbers {
  width: 48px;
  flex-shrink: 0;
  background: transparent;
  border-right: 1px solid var(--border);
  color: var(--gold-dim);
  font-family: 'Courier New', monospace;
  font-size: 11px;
  line-height: 1.75;
  padding: 0 8px 0 12px;
  text-align: right;
  overflow: hidden;
  user-select: none;
  white-space: pre;
  box-sizing: border-box;
  margin-right: 12px;
}

#text-editor {
  display: block;         /* always block — visibility via #editor-wrap */
  flex: 1;
  min-width: 0;
  min-height: 0;
  width: 100%;
  height: 100%;
  background: var(--surface2);
  color: var(--text);
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 12.5px;
  line-height: 1.75;
  padding: 0 16px 0 0;
  border: none;
  border-radius: 0;
  resize: none;
  outline: none;
  box-sizing: border-box;
  overflow-y: auto;
  overflow-x: hidden;
}

/* ── Done-page read-only banner (Pass 1) ─────────────────────── */
#done-banner {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  background: #0f2a0f;
  border-bottom: 1px solid #2e6e2e;
  font-size: 10px;
  color: #5cb85c;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

/* ── Problem flag indicator on page nav input ─────────────────── */
#page-input.problem { border-color: #c08020; }

/* ── OCR overlay panel (replaces raster in left panel) ───────── */
#ocr-overlay-panel {
  display: none;
  position: absolute;
  inset: 0;
  overflow-y: auto;
  background: var(--surface);
  padding: 20px 24px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
  font-family: 'Georgia', 'Times New Roman', serif;
  white-space: pre-wrap;
  word-break: break-word;
  z-index: 10;
}