* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: linear-gradient(180deg, var(--bg-grad-top) 0%, var(--bg) 260px);
  color: var(--text);
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  -webkit-font-smoothing: antialiased;
}
.container {
  max-width: 1400px;
  margin: 20px auto;
  padding: 0 16px;
}
label {
  font-size: 14px;
  color: #324152;
}
select,
button,
input[type="range"],
input[type="number"] {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  font-size: 14px;
}
select {
  min-width: 240px;
  padding: 9px 10px;
}
button {
  padding: 8px 11px;
  cursor: pointer;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 14px;
}
@media (max-width: 960px) {
  .workspace { grid-template-columns: 1fr; }
}
.pdf-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  min-height: 520px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.pdf-message {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-subtle);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  width: fit-content;
}
.pdf-message svg { width: 14px; height: 14px; opacity: 0.6; }
.pdf-container {
  flex: 1;
  background: #fafbfc;
  border-radius: var(--radius-md);
  padding: 8px;
  overflow: auto;
  position: relative;
}
.pdf-message.error {
  color: #bc2331;
  font-weight: 600;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}
.page {
  position: relative;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 8px 24px rgba(25, 38, 53, 0.18);
  border-radius: 4px;
  overflow: hidden;
}
.page canvas {
  display: block;
}
.textLayer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  line-height: 1;
  transform-origin: 0 0;
  z-index: 2;
}
.textLayer span,
.textLayer br {
  color: transparent;
  position: absolute;
  white-space: pre;
  cursor: text;
  transform-origin: 0% 0%;
}
.textLayer ::selection {
  background: rgba(8, 104, 226, 0.28);
}
.pdf-container.text-mode .textLayer,
.pdf-container.image-mode .textLayer {
  pointer-events: none;
  user-select: none;
}
.selection-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}
.selection-overlay.active {
  pointer-events: auto;
}
.selection-overlay.text-active {
  cursor: text;
}
.selection-overlay.image-active {
  cursor: crosshair;
}
.selection-highlights {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.text-highlight {
  position: absolute;
  border-radius: 3px;
  background: rgba(8, 104, 226, 0.16);
  outline: 1px solid rgba(8, 104, 226, 0.3);
}
.text-selection-box {
  position: absolute;
  border: 1px dashed rgba(8, 104, 226, 0.9);
  background: rgba(8, 104, 226, 0.08);
  display: none;
}
.text-selection-box.visible {
  display: block;
}
.selection-box {
  position: absolute;
  border: 2px solid #ff7a00;
  background: rgba(255, 122, 0, 0.16);
  display: none;
}
.selection-box.visible {
  display: block;
}
.selection-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
}
.selection-panel h2 {
  font-size: 16px;
  margin: 0 0 12px;
  color: var(--text);
  font-weight: 700;
}
.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr 0.6fr;
  background: var(--surface-soft);
  padding: 4px;
  border-radius: 12px;
  gap: 4px;
  margin-bottom: 14px;
}
.mode-btn {
  background: transparent;
  border: 0;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  word-break: keep-all;
  transition: background 120ms, color 120ms, box-shadow 120ms;
}
.mode-btn svg { width: 14px; height: 14px; }
.mode-btn:hover:not(.active) { color: var(--text); }
.mode-btn.active {
  background: #fff;
  color: var(--text);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.mode-btn:focus-visible {
  outline: 2px solid var(--accent-ring);
  outline-offset: 1px;
}
.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
}
.title-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-self: center;
}
.title-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent-soft);
  padding: 3px 8px;
  border-radius: 999px;
  width: fit-content;
}
.title-badge svg { width: 11px; height: 11px; }
.title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.meta {
  font-size: 12px;
  color: var(--text-subtle);
}
.meta a {
  color: var(--accent);
  text-decoration: none;
}
.meta a:hover { text-decoration: underline; }

.toolbar-right {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}
.toolbar-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* 책 wrap — 기존 .book-wrap.show-api-key 셀렉터 유지 */
.book-wrap {
  display: inline-flex;
  gap: 8px;
  align-items: center;
}
.book-wrap .api-key-field { display: none; }
.book-wrap.show-api-key .api-key-field { display: inline-flex; }
.api-key-field {
  align-items: center;
  gap: 8px;
  background: var(--info-soft);
  border: 1px solid var(--info-border);
  border-radius: var(--radius-md);
  padding: 5px 10px;
}
.api-key-field > label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  color: #0369a1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0;
}
.api-key-field > label svg { width: 12px; height: 12px; }
.api-key-input {
  background: #fff;
  border: 1px solid var(--info-border);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  font-size: 12px;
  color: var(--text);
  width: 150px;
  font-family: "SF Mono", ui-monospace, "Menlo", monospace;
}
.api-key-input:focus {
  outline: 2px solid var(--accent-ring);
  outline-offset: 0;
  border-color: var(--accent);
}
.api-key-input.saved {
  border-color: var(--success);
  background: var(--success-soft);
}
.api-key-input.saved:focus { outline-color: var(--success); border-color: var(--success); }
.api-key-input.error {
  border-color: var(--danger);
  background: var(--danger-soft);
}
.api-key-input.error:focus { outline-color: var(--danger); border-color: var(--danger); }

/* 페이저 */
.pager {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.group.pager {
  background: transparent;
  border: none;
  padding: 0;
}
#page-input {
  width: 72px;
  padding: 6px 8px;
}
.pager-num {
  font-weight: 600;
  color: var(--text);
  font-size: 14px;
  padding: 0 8px;
}
.pager-num .sep { color: #94a3b8; font-weight: 400; margin: 0 2px; }

/* 배율 */
.zoom {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.zoom input[type="range"] {
  width: 110px;
  accent-color: var(--accent);
}

/* 반응형 */
@media (max-width: 960px) {
  .toolbar { grid-template-columns: 1fr; }
  .toolbar-right { align-items: stretch; }
  .toolbar-row { justify-content: flex-start; }
}
@media (max-width: 960px) {
  .panel {
    min-height: 56vh;
  }
  .selection-panel {
    min-height: 32vh;
  }
}

/* ─────────────────────────────────────────
   Game modal overlay
   ───────────────────────────────────────── */
.game-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.55);
  display: flex;
  flex-direction: column;
  padding: 24px;
}
.game-modal[hidden] { display: none; }

.game-modal-bar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: #ffffff;
  border-radius: 12px 12px 0 0;
  border: 1px solid #e2e8f0;
  border-bottom: 0;
}

.game-modal-title {
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
}

.game-modal-close {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
}
.game-modal-close:hover { border-color: var(--accent); }
.game-modal-close:focus-visible {
  outline: 2px solid var(--accent-ring);
  outline-offset: 1px;
}

.game-iframe {
  flex: 1 1 auto;
  width: 100%;
  border: 1px solid #e2e8f0;
  border-radius: 0 0 12px 12px;
  background: #ffffff;
  display: block;
}