/* ============================================================
   키워드 조합기 — 사이트 톤 통일 (Pretendard, 블루 액센트, 다크모드)
   디자인 원칙: 정보 밀도 우선, AI Slop 회피, Tailwind 표준 스케일
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-card: #ffffff;
  --text: #1f2328;
  --text-muted: #57606a;
  --border: #d0d7de;
  --border-soft: #eaeef2;
  --accent: #0969da;
  --accent-soft: #dbeafe;
  --accent-strong: #0550ae;
  --success: #1a7f37;
  --success-soft: #dafbe1;
  --warning: #b8410e;
  --warning-soft: #fff1e5;
  --shadow: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08);

  --font-sans: 'Pretendard', -apple-system, 'Segoe UI', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', Consolas, monospace;
}

[data-theme="dark"] {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --bg-card: #161b22;
  --text: #e6edf3;
  --text-muted: #8d96a0;
  --border: #30363d;
  --border-soft: #21262d;
  --accent: #58a6ff;
  --accent-soft: #1f3a5f;
  --accent-strong: #79c0ff;
  --success: #3fb950;
  --success-soft: #1a3a26;
  --warning: #ff9b6e;
  --warning-soft: #3d1a08;
  --shadow: 0 1px 3px rgba(0,0,0,.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,.5);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: anywhere;
  height: 100vh;
  overflow: hidden;
}

/* ===== 홈 링크 + 다크 토글 (사이트 표준) ===== */
#home-link {
  position: fixed;
  top: 12px;
  right: 16px;
  z-index: 60;
  padding: 7px 12px;
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: background .12s, color .12s;
}
#home-link:hover {
  background: var(--bg-soft);
  color: var(--accent);
}

#theme-toggle {
  position: fixed;
  bottom: 16px;
  right: 16px;
  z-index: 40;
  padding: 8px 12px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow);
}
[data-theme="dark"] #theme-toggle {
  background: var(--bg-soft);
  border-color: var(--accent);
}

/* ===== 페이지 컨테이너 — Height 체인 ===== */
.page {
  max-width: 1280px;
  height: 100vh;
  margin: 0 auto;
  padding: 48px 32px 24px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* 작업 영역 — 두 가지 모드 (좌우 / 상하) */
.workspace {
  flex: 1;
  min-height: 0;
  display: grid;
  gap: 16px;
  overflow: hidden;
}

/* === Mode A: 좌우 분할 (side) === */
.workspace.layout-side {
  grid-template-columns: 3fr 2fr;
  grid-template-rows: 1fr;
  align-items: stretch;
}
.workspace.layout-side .workspace-left {
  align-self: start;  /* 자연 높이로 위에 붙음 */
  max-height: 100%;
}

/* === Mode B: 상하 분할 (stack) === */
.workspace.layout-stack {
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
}

/* 공통 패널 스타일 */
.workspace-left {
  display: flex;
  flex-direction: column;
  min-height: 0;
  gap: 16px;
}
.workspace-right {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

/* ===== 헤더 + 사용방법 (좌우 2단) ===== */
.hero {
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 1fr 500px;
  gap: 20px;
  align-items: start;
  margin: 0 0 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-soft);
}
.hero-content {
  position: relative;
  padding: 4px 0 4px 16px;
  border-left: 4px solid var(--accent);
  border-radius: 0 4px 4px 0;
  background: linear-gradient(to right, var(--accent-soft) 0%, transparent 60%);
}
.hero-content h1 {
  margin: 0 0 6px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -.3px;
}

/* 사용 방법 박스 (우측) */
.hero-usage {
  padding: 12px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
}
.hero-usage h3 {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: .3px;
  text-transform: uppercase;
}
.hero-usage ul {
  margin: 0;
  padding-left: 18px;
  font-size: 12.5px;
  color: var(--text);
}
.hero-usage li {
  margin: 2px 0;
  line-height: 1.45;
}
.hero-usage code {
  padding: 1px 5px;
  background: var(--bg);
  color: var(--accent);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.92em;
  border: 1px solid var(--border-soft);
}
.hero-sub {
  margin: 0 0 12px;
  color: var(--text-muted);
  font-size: 14px;
}
.hero-stats {
  margin: 0;
  font-size: 13.5px;
  color: var(--text-muted);
}
.hero-stats strong {
  color: var(--text);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.hero-arrow {
  margin: 0 6px;
  color: var(--border);
}

/* 레이아웃 토글 */
.layout-switch {
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.layout-switch-label {
  font-size: 11.5px;
  color: var(--text-muted);
  font-weight: 600;
  margin-right: 2px;
}
.layout-switch button {
  padding: 4px 10px;
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 11.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.layout-switch button:hover {
  color: var(--text);
  border-color: var(--accent);
}
.layout-switch button.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
}

/* ===== 입력 영역 ===== */
.inputs {
  flex-shrink: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.input-card {
  display: flex;
  flex-direction: column;
  min-height: 0;
  gap: 8px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: 8px;
  transition: transform .14s, box-shadow .14s, border-color .14s, border-left-color .14s, border-left-width .14s;
}
/* A: hover translate */
.input-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
/* C: 입력 상태 시각화 — 값이 있으면 액센트 컬러 좌측 보더 */
.input-card:has(textarea:not(:placeholder-shown)) {
  border-left-color: var(--accent);
  border-left-width: 5px;
  padding-left: 14px;
}
.input-card:has(textarea:not(:placeholder-shown)) .badge {
  background: var(--accent-soft);
  color: var(--accent);
}

.input-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.input-card-head h2 {
  margin: 0;
  font-size: 14.5px;
  font-weight: 700;
}
.badge {
  display: inline-block;
  padding: 1px 8px;
  background: var(--bg-soft);
  color: var(--text-muted);
  border-radius: 12px;
  font-size: 11.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.input-card[data-has-content="true"] .badge,
.input-card .badge[data-active="true"] {
  background: var(--accent-soft);
  color: var(--accent);
}

.input-hint {
  margin: 0;
  color: var(--text-muted);
  font-size: 12.5px;
  line-height: 1.45;
  min-height: 2.9em; /* 2줄 높이 확보 — 박스 간 textarea 시작 위치 정렬 */
}

.input-card textarea {
  flex: 0 0 auto;
  min-height: 200px;
  padding: 10px 12px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.55;
  resize: vertical;
  transition: border-color .12s;
}
.input-card textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.file-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.file-btn {
  display: inline-block;
  padding: 5px 11px;
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background .12s;
}
.file-btn:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
}
.file-name {
  font-size: 11.5px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

/* ===== 보조 액션 ===== */
.aux-actions {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}
.aux-actions .status {
  flex: 1;
  font-size: 12.5px;
  color: var(--text-muted);
  text-align: right;
}
.aux-actions .status[data-tone="error"] {
  color: var(--warning);
  font-weight: 600;
}

/* ===== 버튼 ===== */
.btn {
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .12s, color .12s, border-color .12s, opacity .12s;
  white-space: nowrap;
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}
.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}
.btn-ghost:hover:not(:disabled) {
  background: var(--bg-soft);
  color: var(--text);
}

/* 입력 비우기 — 자주 쓰는 reset 액션, 보이지만 destructive 시그널 포함 */
.btn-clear {
  background: var(--warning-soft);
  color: var(--warning);
  border-color: var(--warning-soft);
}
.btn-clear:hover:not(:disabled) {
  background: var(--warning);
  color: #ffffff;
  border-color: var(--warning);
}

/* ===== 결과 영역 — 우측 패널 내부 스크롤 ===== */
.result {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  transition: border-color .14s, border-left-color .14s, border-left-width .14s, background .14s;
}
/* A: 결과 활성화 — 데이터가 있을 때(empty 셀이 없을 때) 그린 보더로 강조 */
.result:not(:has(.result-table td.empty)) {
  border-left-color: var(--success);
  border-left-width: 5px;
  padding-left: 18px;
}
.result:not(:has(.result-table td.empty)) .result-head h2::before {
  content: "● ";
  color: var(--success);
  font-size: 0.7em;
  vertical-align: middle;
}
.result-head {
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-soft);
}
.result-head h2 {
  margin: 0 0 2px;
  font-size: 16px;
  font-weight: 700;
}
.result-meta {
  margin: 0;
  font-size: 12.5px;
  color: var(--text-muted);
}
.result-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.result-table-wrap {
  flex: 1;
  min-height: 0;
  overflow-x: auto;
  overflow-y: auto;
  border-radius: 6px;
}
.result-table .col-num {
  width: 56px;
  text-align: right;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.result-table tbody td.col-num {
  text-align: right;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
}
.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.result-table th {
  position: sticky;
  top: 0;
  background: var(--bg-soft);
  color: var(--text);
  text-align: left;
  padding: 8px 12px;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  z-index: 1;
}
.result-table td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
}
.result-table tr:last-child td {
  border-bottom: 0;
}
.result-table tr:nth-child(even) td {
  background: var(--bg-soft);
}
/* C: 표 행 호버 강조 */
.result-table tbody tr:hover td {
  background: var(--accent-soft);
}
.result-table td.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 32px 12px;
  font-size: 13px;
}

/* ===== 반응형 ===== */
/* 1100px 이하 — 좌우 분할 X, 전체 페이지 세로 흐름으로 복귀 */
@media (max-width: 1100px) {
  html, body {
    height: auto;
    overflow: auto;
  }
  .page {
    height: auto;
    overflow: visible;
    padding-bottom: 60px;
  }
  .hero {
    grid-template-columns: 1fr;
  }
  .workspace {
    display: block;
    overflow: visible;
  }
  .workspace-left,
  .workspace-right {
    overflow: visible;
  }
  .result {
    overflow: visible;
    margin-top: 16px;
  }
  .result-table-wrap {
    max-height: 480px;
  }
}
@media (max-width: 900px) {
  .page {
    padding: 56px 18px 60px;
  }
  .inputs {
    grid-template-columns: 1fr;
  }
  .input-card textarea {
    min-height: 140px;
  }
  .result-head {
    flex-direction: column;
  }
  .result-actions {
    width: 100%;
  }
  .result-actions .btn {
    flex: 1;
  }
}

@media (max-width: 600px) {
  .hero h1 { font-size: 20px; }
  .aux-actions {
    flex-wrap: wrap;
  }
  .aux-actions .status {
    width: 100%;
    text-align: left;
  }
}