:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #e2e5ec;
  --border-strong: #c5cad4;
  --text: #1c1f24;
  --text-sub: #6b7280;
  --primary: #1f5cff;
  --primary-hover: #174bd0;
  --danger: #d94f4f;
  --warn: #e48a2c;
  --info: #2a8fb5;
  --ok: #2e9a5a;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
[hidden] { display: none !important; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}

/* ── Topbar ─────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  gap: 12px;
  flex-shrink: 0;
}
.topbar h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}
.nav {
  margin-left: 16px;
  margin-right: auto;
  font-size: 13px;
  display: flex;
  gap: 4px;
}
.nav a {
  color: var(--primary);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 4px;
}
.nav a:hover { background: #eef4ff; text-decoration: none; }
.controls {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-sub);
}
.controls label {
  display: flex;
  align-items: center;
  gap: 6px;
}
.controls select {
  padding: 5px 8px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: #fff;
  font-size: 13px;
  color: var(--text);
}
.controls .toggle input { margin: 0; }
.primary {
  padding: 7px 14px;
  background: var(--primary);
  color: #fff;
  border: 0;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.primary:hover { background: var(--primary-hover); }
.primary:disabled { background: #a9b4c6; cursor: not-allowed; }

/* ── Split layout ──────────────────────────── */
.split {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  min-height: 0;
}
.pane {
  background: var(--panel);
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}
.pane-title {
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-sub);
  border-bottom: 1px solid var(--border);
}

/* 좌 원문 */
.left textarea {
  flex: 1;
  padding: 18px;
  border: 0;
  outline: none;
  resize: none;
  font-size: 15px;
  line-height: 1.7;
  font-family: "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  color: var(--text);
  background: #fcfcfd;
}
.pane-foot {
  padding: 8px 16px;
  font-size: 12px;
  color: var(--text-sub);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
}
.status.error { color: var(--danger); }
.status.ok { color: var(--ok); }

/* 우 탭 */
.tabbar {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding-left: 8px;
  background: #fafbfc;
  flex-shrink: 0;
}
.tab {
  padding: 11px 16px;
  border: 0;
  background: transparent;
  font-size: 13px;
  color: var(--text-sub);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  font-weight: 500;
}
.tab:hover { color: var(--text); }
.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}
.score-badge {
  margin-left: auto;
  padding: 4px 12px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  background: #eef4ff;
  border-radius: 12px;
  margin-right: 12px;
}
.score-badge .score-unit { color: var(--text-sub); font-size: 11px; }

.tabpanel {
  display: none;
  flex: 1;
  overflow: auto;
  padding: 14px 18px;
  min-height: 0;
}
.tabpanel.active { display: block; }
.empty {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-sub);
  font-size: 13px;
}

/* ── Diff list ─────────────────────────────── */
.diff-list { display: flex; flex-direction: column; gap: 10px; }
.diff-item {
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: 6px;
  padding: 12px 14px;
  background: #fff;
  font-size: 14px;
  line-height: 1.6;
}
.diff-item.sev-필수 { border-left-color: var(--danger); }
.diff-item.sev-권장 { border-left-color: var(--warn); }
.diff-item.sev-제안 { border-left-color: var(--info); }

.diff-row { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.diff-orig {
  background: #fff2f2;
  text-decoration: line-through;
  text-decoration-color: var(--danger);
  padding: 0 4px;
  border-radius: 3px;
  color: #82272c;
}
.diff-arrow { color: var(--text-sub); }
.diff-sug {
  background: #e9f7ef;
  padding: 0 4px;
  border-radius: 3px;
  color: #1b6a3d;
  font-weight: 500;
}
.diff-meta {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-sub);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.badge {
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--mono);
}
.badge.sev-필수 { background: #fde7e7; color: #b33030; }
.badge.sev-권장 { background: #fcefd9; color: #a66710; }
.badge.sev-제안 { background: #e1f0f7; color: #1d6e8c; }
.badge.conf-low { background: #f0e7fb; color: #6a3db5; }
.badge.rule { background: #eef0f4; color: #3a4660; }
.badge.meta { background: #ecf6ff; color: #2d5996; border: 1px dashed #9fbee3; }

.diff-item.is-meta {
  border-left-color: #9fbee3;
  background: #f9fbff;
  border-left-style: dashed;
}
.diff-item.is-meta .diff-orig {
  background: transparent;
  text-decoration: none;
  color: var(--text-sub);
  font-style: italic;
}
.diff-rationale { color: #4a5568; font-size: 12.5px; margin-top: 6px; }

/* ── Clean text (라이브 타이핑) ─────────── */
.clean-text {
  white-space: pre-wrap;
  font-size: 15px;
  line-height: 1.85;
  font-family: "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  color: var(--text);
}
.stream-cursor {
  display: inline-block;
  width: 8px;
  height: 18px;
  background: var(--primary);
  vertical-align: text-bottom;
  margin-left: 1px;
  animation: cursor-blink 0.9s steps(2,start) infinite;
}
@keyframes cursor-blink { to { visibility: hidden; } }

/* ── 교정 문서 뷰 (원문 + 인라인 마크) ──── */
.doc-view {
  font-size: 15px;
  line-height: 2.2;                 /* ruby rt 수용 공간 */
  font-family: "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  color: var(--text);
}
.doc-plain { white-space: pre-wrap; margin: 0; font-family: inherit; font-size: inherit; line-height: 1.8; }
.doc-body  { white-space: pre-wrap; word-break: break-word; }

/* ruby 마크 */
ruby.mk {
  ruby-position: over;
  cursor: pointer;
  padding: 0 1px;
  border-radius: 2px;
  transition: background-color 0.15s;
}
ruby.mk:hover { background: #eef4ff; }
ruby.mk rt {
  font-size: 11px;
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 2px;
  color: var(--primary);
}
/* 심각도별 밑줄 색 */
ruby.mk.sev-필수 > rb, ruby.mk.sev-필수 { text-decoration: underline wavy; text-decoration-color: var(--danger); text-underline-offset: 3px; text-decoration-skip-ink: none; }
ruby.mk.sev-권장 { text-decoration: underline wavy; text-decoration-color: var(--warn);   text-underline-offset: 3px; text-decoration-skip-ink: none; }
ruby.mk.sev-제안 { text-decoration: underline wavy; text-decoration-color: var(--info);   text-underline-offset: 3px; text-decoration-skip-ink: none; }
ruby.mk.sev-필수 rt { color: var(--danger); }
ruby.mk.sev-권장 rt { color: var(--warn); }
ruby.mk.sev-제안 rt { color: var(--info); }

.doc-legend {
  margin-top: 18px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-sub);
}
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.sw { display: inline-block; width: 14px; height: 3px; border-radius: 2px; }
.sw.sev-필수 { background: var(--danger); }
.sw.sev-권장 { background: var(--warn); }
.sw.sev-제안 { background: var(--info); }

/* ── 라이브 인디케이터 ──────────────────── */
.live-indicator {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  font-size: 12.5px;
  color: var(--primary);
  background: #eef4ff;
  border-radius: 12px;
  font-family: var(--mono);
}
.live-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse 1s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 0.4; } 50% { opacity: 1; } }

.muted.small { font-size: 12px; color: var(--text-sub); }
kbd {
  display: inline-block;
  padding: 1px 6px;
  font-size: 11px;
  font-family: var(--mono);
  background: #f0f2f6;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 3px;
}

/* 교정 목록 하이라이트 (문서 뷰 클릭 시 플래시) */
.diff-item.flash {
  animation: flash 1.2s ease-out;
}
@keyframes flash {
  0%  { background: #fff5cc; }
  100%{ background: #fff; }
}
.copy-btn {
  float: right;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--text-sub);
  background: #f0f2f6;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}
.copy-btn:hover { background: #e6e9ef; color: var(--text); }

/* ── AI score ─────────────────────────────── */
.score-body { font-size: 14px; line-height: 1.6; }
.score-gauge {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}
.score-gauge strong { font-size: 32px; font-family: var(--mono); }
.score-judgment {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-left: 6px;
}
.judgment-ok    { background: #e9f7ef; color: #1b6a3d; }
.judgment-warn  { background: #fcefd9; color: #a66710; }
.judgment-bad   { background: #fde7e7; color: #b33030; }
.judgment-worst { background: #efdcfb; color: #6a2aa6; }

.bar {
  height: 8px;
  background: #eef1f7;
  border-radius: 4px;
  overflow: hidden;
  margin: 16px 0 8px;
}
.bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--ok), var(--primary));
}
.breakdown-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  margin-top: 14px;
  font-size: 13px;
}
.breakdown-item {
  display: flex;
  justify-content: space-between;
  padding: 6px 10px;
  background: #f8f9fb;
  border-radius: 4px;
}
.breakdown-item .loss { font-family: var(--mono); color: var(--danger); }
.summary-block {
  margin-top: 18px;
  padding: 12px 14px;
  background: #f8f9fb;
  border-radius: 6px;
  color: var(--text);
  font-size: 13.5px;
  line-height: 1.65;
}

/* ── Overlay ─────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(18,22,30,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.overlay-inner {
  background: #fff;
  padding: 22px 28px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text);
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.18);
  min-width: 260px;
}
.overlay-title { font-weight: 600; font-size: 15px; }
.overlay-sub   { color: var(--text-sub); font-size: 12.5px; margin-top: 4px; }
.overlay-elapsed {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--primary);
}
.secondary {
  margin-top: 14px;
  padding: 6px 16px;
  background: #f0f2f6;
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}
.secondary:hover { background: #e6e9ef; }

/* ── 프로젝트 모달 ─────────────────────────── */
.dlg {
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 20px 22px;
  min-width: 360px;
  max-width: 90vw;
  background: #fff;
  color: var(--text);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.dlg::backdrop { background: rgba(0,0,0,0.35); }
.dlg h3 { margin: 0 0 8px; font-size: 18px; }
.dlg p.muted { margin: 0 0 14px; line-height: 1.5; }
.dlg-row { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; font-size: 14px; }
.dlg-row > span { color: var(--muted); font-size: 12px; }
.dlg-row input, .dlg-row select {
  padding: 8px 10px; border: 1px solid var(--border-strong); border-radius: 6px; font-size: 14px;
}
.dlg-actions { display: flex; gap: 8px; justify-content: flex-end; padding: 0; margin: 14px 0 0; }

/* ── 토스트 ──────────────────────────────── */
.toast-area {
  position: fixed; right: 20px; bottom: 20px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 9999; pointer-events: none;
}
.toast {
  pointer-events: auto;
  background: #1f2937; color: #fff;
  padding: 10px 14px; border-radius: 6px;
  font-size: 13px; box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  opacity: 1; transition: opacity 600ms ease, transform 600ms ease;
  transform: translateX(0);
  max-width: 320px;
}
.toast.toast-ok { background: #14532d; }
.toast.toast-out { opacity: 0; transform: translateX(20px); }

/* ── 프로젝트 메모 페이지 ─────────────────── */
.project-main {
  max-width: 880px; margin: 24px auto; padding: 0 20px;
  display: flex; flex-direction: column; gap: 16px;
}
.project-head h2 { margin: 0 0 4px; }
.project-head .project-actions { margin-top: 10px; }
.empty-card, .memo-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
}
.memo-card h3 { margin: 0 0 10px; font-size: 15px; }
.memo-card .muted.small { font-weight: normal; font-size: 12px; }
.memo-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.memo-table th, .memo-table td {
  padding: 8px 10px; border-bottom: 1px solid var(--border);
  text-align: left; vertical-align: top;
}
.memo-table th { font-size: 12px; color: var(--muted); font-weight: 600; }
.memo-list { margin: 0; padding-left: 18px; font-size: 14px; line-height: 1.7; }
.link-danger {
  background: transparent; border: none; color: #b91c1c;
  cursor: pointer; font-size: 12px; text-decoration: underline;
}
.link-danger:hover { color: #7f1d1d; }