:root {
  --bg: #f4f5f7; --panel: #fff; --border: #d9dce1; --text: #1f2328; --muted: #6b7280;
  --accent: #2563eb; --accent-hover: #1d4ed8; --danger: #dc2626;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text); line-height: 1.6;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 헤더 */
.site-header {
  background: var(--panel); border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
  position: sticky; top: 0; z-index: 50;
}
.site-header .inner { max-width: 1000px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.site-header .logo { font-weight: 800; font-size: 16px; color: var(--text); white-space: nowrap; }
.site-header nav { display: flex; gap: 4px; flex-wrap: wrap; }
.site-header nav a { font-size: 13px; color: var(--muted); padding: 5px 9px; border-radius: 6px; }
.site-header nav a:hover { background: #f0f1f3; text-decoration: none; color: var(--text); }
.site-header nav a.active { color: var(--accent); font-weight: 600; }
.site-header .privacy-chip { margin-left: auto; font-size: 11.5px; color: #047857; background: #ecfdf5; border: 1px solid #a7f3d0; padding: 4px 9px; border-radius: 999px; white-space: nowrap; }

/* 도구 페이지 레이아웃 */
main.tool { max-width: 820px; margin: 0 auto; padding: 32px 20px 80px; }
.tool h1 { font-size: 28px; font-weight: 800; letter-spacing: -.5px; margin: 0 0 8px; text-align: center; }
.tool .sub { text-align: center; color: var(--muted); margin: 0 0 28px; font-size: 15px; }

/* 버튼 */
.btn {
  font: inherit; font-size: 14px; border: 1px solid var(--border); background: var(--panel); color: var(--text);
  padding: 9px 16px; border-radius: 8px; cursor: pointer; display: inline-flex; align-items: center; gap: 7px;
  transition: background .12s, border-color .12s;
}
.btn:hover:not(:disabled) { background: #f0f1f3; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn.lg { font-size: 15px; padding: 12px 26px; }

/* 드롭존 */
.drop {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  border: 2px dashed var(--border); border-radius: 14px; padding: 48px 30px; background: var(--panel);
  cursor: pointer; transition: border-color .12s, background .12s; text-align: center;
}
.drop.over { border-color: var(--accent); background: #eff6ff; }
.drop svg { opacity: .3; }
.drop h2 { margin: 8px 0 2px; font-size: 18px; color: var(--text); }
.drop p { margin: 0; color: var(--muted); font-size: 13px; }

/* 파일 리스트 */
.filelist { list-style: none; padding: 0; margin: 20px 0 0; display: flex; flex-direction: column; gap: 8px; }
.filelist li {
  display: flex; align-items: center; gap: 10px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 12px;
}
.filelist li .name { flex: 1; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.filelist li .meta { color: var(--muted); font-size: 12px; white-space: nowrap; }
.filelist li button { border: 1px solid var(--border); background: var(--panel); border-radius: 6px; width: 30px; height: 30px; cursor: pointer; font-size: 14px; padding: 0; }
.filelist li button:hover:not(:disabled) { background: #f0f1f3; }
.filelist li button:disabled { opacity: .3; cursor: not-allowed; }
.filelist li .del:hover { color: var(--danger); border-color: var(--danger); }

.actions { display: flex; justify-content: center; gap: 10px; margin-top: 24px; flex-wrap: wrap; }
.opts { display: flex; justify-content: center; gap: 16px; margin-top: 16px; flex-wrap: wrap; align-items: center; }
.opts label { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
.opts input[type=text], .opts input[type=number], .opts select { font: inherit; font-size: 13px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; }
.opts input[type=number] { width: 70px; }

/* 결과/썸네일 */
.result-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; margin-top: 20px; }
.result-grid .cell { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 10px; text-align: center; }
.result-grid .cell img, .result-grid .cell canvas { width: 100%; border: 1px solid var(--border); border-radius: 4px; }
.result-grid .cell .cap { font-size: 12px; color: var(--muted); margin-top: 6px; }

/* 페이지 썸네일 그리드 (삭제·회전 등 시각 편집) */
.pgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 14px; margin-top: 20px; }
.pcard { position: relative; background: var(--panel); border: 2px solid var(--border); border-radius: 10px; padding: 8px; text-align: center; }
.pcard canvas { width: 100%; height: auto; border: 1px solid var(--border); border-radius: 3px; transition: transform .18s; }
.pcard .pnum { font-size: 12px; color: var(--muted); margin-top: 6px; }
.pcard.sel-del { border-color: var(--danger); }
.pcard.sel-del canvas { opacity: .4; }
.pcard.sel-del::after { content: "삭제"; position: absolute; left: 8px; right: 8px; top: 8px; bottom: 26px; background: rgba(220,38,38,.30); border-radius: 3px; display: flex; align-items: center; justify-content: center; color: #b91c1c; font-weight: 800; font-size: 18px; pointer-events: none; }
.pcard.clickable { cursor: pointer; }
.pcard.clickable:hover { border-color: #93c5fd; }
.pcard .rot-btn { position: absolute; top: 6px; right: 6px; width: 30px; height: 30px; border-radius: 7px; border: 1px solid var(--border); background: rgba(255,255,255,.96); cursor: pointer; font-size: 15px; padding: 0; box-shadow: var(--shadow); }
.pcard .rot-btn:hover { background: #fff; border-color: var(--accent); }

/* 콘텐츠(SEO) 섹션 */
.content { max-width: 820px; margin: 0 auto; padding: 10px 20px 40px; }
.content h2 { font-size: 18px; margin: 30px 0 10px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.content p, .content li { font-size: 14.5px; color: #374151; }
.content ol, .content ul { padding-left: 22px; }
.content details { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin: 8px 0; }
.content details summary { cursor: pointer; font-weight: 600; font-size: 14px; }
.content details p { margin: 8px 0 0; color: var(--muted); font-size: 13.5px; }

/* 도구 그리드 (허브) */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin: 16px 0; }
.tool-grid a {
  display: block; background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; text-decoration: none; color: var(--text); transition: border-color .12s, box-shadow .12s;
}
.tool-grid a:hover { border-color: var(--accent); box-shadow: var(--shadow); text-decoration: none; }
.tool-grid a .ico { font-size: 22px; }
.tool-grid a .t { font-weight: 700; font-size: 15px; margin: 6px 0 3px; }
.tool-grid a .d { font-size: 12.5px; color: var(--muted); }

/* 푸터 */
.site-footer { text-align: center; color: var(--muted); font-size: 12.5px; padding: 24px; border-top: 1px solid var(--border); line-height: 1.9; }
.site-footer a { color: var(--accent); }

.privacy-note { background: #ecfdf5; border: 1px solid #a7f3d0; border-radius: 10px; padding: 12px 16px; font-size: 12.5px; color: var(--muted); text-align: center; margin: 16px 0; }
.privacy-note strong { color: #047857; }

.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); background: #1f2328; color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 13px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 200; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.ad-block { display: flex; justify-content: center; margin: 30px 0; min-height: 90px; align-items: center; }
.ad-block .ad-mo { display: none; }
@media (max-width: 768px) { .ad-block .ad-pc { display: none; } .ad-block .ad-mo { display: block; } }

/* 하단 앵커(스티키) 광고 */
.anchor-ad {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 150;
  background: rgba(255,255,255,.97); border-top: 1px solid var(--border);
  box-shadow: 0 -2px 10px rgba(0,0,0,.07); display: flex; justify-content: center; align-items: center;
  padding: 6px 0; min-height: 96px;
}
.anchor-ad .ad-mo { display: none; }
body.has-anchor { padding-bottom: 108px; }
@media (max-width: 768px) {
  .anchor-ad { min-height: 106px; }
  .anchor-ad .ad-pc { display: none; }
  .anchor-ad .ad-mo { display: block; }
  body.has-anchor { padding-bottom: 118px; }
}