/* app.css — 포토 스튜디오
   세트 공통 Apple Reference Design System 토큰 (Fog #f5f5f7 / Surface #fff /
   Text #1d1d1f / Muted #6e6e73 / Primary #0071e3, 카드 18px, 플랫 지면).
   사진 편집 스테이지는 사진이 잘 보이도록 중립 회색 캔버스로 둔다. */

:root {
  --ui-bg: #f5f5f7;
  --ui-surface: #ffffff;
  --ui-fill: #f5f5f7;
  --ui-fill-hover: #ebebef;
  --ui-border: rgba(0, 0, 0, 0.09);
  --ui-border-strong: rgba(0, 0, 0, 0.18);
  --ui-text: #1d1d1f;
  --ui-sub: #6e6e73;
  --ui-faint: rgba(110, 110, 115, 0.6);
  --ui-primary: #0071e3;
  --ui-primary-hover: #0077ed;
  --ui-link: #0066cc;
  --ui-primary-soft: rgba(0, 113, 227, 0.08);
  --ui-link-soft: rgba(0, 102, 204, 0.07);
  --ui-danger: #d70015;
  --stage-bg: #e2e2e7;
  --radius: 12px;
  --radius-card: 18px;
  --radius-pill: 980px;
  --header-h: 60px;
  --panel-w: 344px;
  --ui-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
    "Helvetica Neue", "Segoe UI", Roboto, Arial, "Malgun Gothic", "맑은 고딕", sans-serif;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--ui-bg);
  color: var(--ui-text);
  font-family: var(--ui-font);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

#app { display: flex; flex-direction: column; height: 100vh; }

/* ---------- 헤더 (세트 공통) ---------- */
#app-header {
  height: var(--header-h);
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: var(--ui-surface);
  border-bottom: 1px solid var(--ui-border);
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 11px; padding-right: 8px; }
.brand-dot {
  width: 28px; height: 28px; border-radius: 9px;
  background: var(--ui-primary);
  display: flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
}
.brand-text { line-height: 1.2; }
.brand-text strong { display: block; font-size: 15px; font-weight: 600; letter-spacing: -0.2px; white-space: nowrap; }
.brand-text small { color: var(--ui-sub); font-size: 11.5px; white-space: nowrap; }

.header-actions { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.v-divider { width: 1px; height: 22px; background: var(--ui-border); margin: 0 8px; }

/* ---------- 버튼 (세트 공통) ---------- */
.btn {
  appearance: none;
  background: transparent;
  border: 0;
  font: inherit;
  cursor: pointer;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.btn-text { color: var(--ui-link); padding: 6px 13px; font-size: 13.5px; }
.btn-text:hover:not(:disabled) { background: var(--ui-link-soft); }
.btn-primary {
  background: var(--ui-primary);
  color: #fff;
  padding: 7px 17px;
  font-size: 13.5px;
  font-weight: 500;
}
.btn-primary:hover:not(:disabled) { background: var(--ui-primary-hover); }
.btn:disabled { color: var(--ui-faint); cursor: default; }
.btn-primary:disabled { background: var(--ui-fill-hover); color: var(--ui-faint); }
.btn.wide { width: 100%; padding: 9px 17px; }
.linklike {
  appearance: none; border: 0; background: none; padding: 0;
  color: var(--ui-link); font: inherit; cursor: pointer;
  text-decoration: underline; text-underline-offset: 2px;
}
.mini-link {
  appearance: none; border: 0; background: none; padding: 2px 8px;
  color: var(--ui-link); font-size: 12px; cursor: pointer;
  border-radius: var(--radius-pill); margin-left: 6px;
}
.mini-link:hover { background: var(--ui-link-soft); }
kbd {
  font-family: var(--ui-font); font-size: 11px;
  border: 1px solid var(--ui-border-strong);
  border-bottom-width: 2px; border-radius: 5px; padding: 1px 5px;
  background: var(--ui-surface);
}

/* ---------- 메인 ---------- */
#app-main { flex: 1; display: flex; min-height: 0; }

/* 스테이지 */
#stage {
  flex: 1;
  position: relative;
  min-width: 0;
  background: var(--stage-bg);
  overflow: hidden;
  display: flex;
}
#canvas-wrap {
  flex: 1;
  overflow: auto;
  display: flex;
  cursor: grab;
  scrollbar-width: thin;
}
#canvas-wrap.panning { cursor: grabbing; }
#canvas-wrap.cropmode { cursor: default; }
#canvas-inner {
  margin: auto;
  position: relative;
  flex: 0 0 auto;
  padding: 28px;
}
#view {
  display: block;
  background: var(--ui-surface);
  box-shadow: 0 1px 3px rgba(0,0,0,0.14), 0 8px 28px rgba(0,0,0,0.10);
  border-radius: 2px;
}

/* 드롭존 (빈 상태) */
#dropzone {
  position: absolute; inset: 16px;
  display: flex; align-items: center; justify-content: center;
  border: 2px dashed var(--ui-border-strong);
  border-radius: var(--radius-card);
  background: rgba(255,255,255,0.45);
  transition: background 0.15s, border-color 0.15s;
}
#dropzone.dragover { background: var(--ui-primary-soft); border-color: var(--ui-primary); }
.dz-box { text-align: center; color: var(--ui-sub); padding: 24px; }
.dz-title { font-size: 17px; font-weight: 600; color: var(--ui-text); margin: 14px 0 6px; }
.dz-sub { margin: 0 0 10px; }
.dz-hint { font-size: 12px; color: var(--ui-faint); margin: 0; }

/* 자르기 오버레이 */
#crop-overlay { position: absolute; inset: 28px; }
#crop-shade { position: absolute; inset: 0; background: rgba(0,0,0,0.45); }
#crop-rect {
  position: absolute;
  border: 1.5px solid #fff;
  box-shadow: 0 0 0 9999px rgba(0,0,0,0.45);
  cursor: move;
}
#crop-overlay.circle #crop-rect { border-radius: 50%; }
.crop-grid { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.crop-grid i { position: absolute; background: rgba(255,255,255,0.35); }
.crop-grid i:nth-child(1) { left: 33.33%; top: 0; width: 1px; height: 100%; }
.crop-grid i:nth-child(2) { left: 66.66%; top: 0; width: 1px; height: 100%; }
.crop-grid i:nth-child(3) { left: 0; top: 33.33%; width: 100%; height: 1px; }
.crop-grid i:nth-child(4) { left: 0; top: 66.66%; width: 100%; height: 1px; }
.ch {
  position: absolute; width: 14px; height: 14px;
  border: 2px solid #fff; border-radius: 3px;
  background: transparent;
}
.ch-nw { left: -8px; top: -8px; cursor: nwse-resize; }
.ch-n  { left: 50%; margin-left: -8px; top: -8px; cursor: ns-resize; }
.ch-ne { right: -8px; top: -8px; cursor: nesw-resize; }
.ch-w  { left: -8px; top: 50%; margin-top: -8px; cursor: ew-resize; }
.ch-e  { right: -8px; top: 50%; margin-top: -8px; cursor: ew-resize; }
.ch-sw { left: -8px; bottom: -8px; cursor: nesw-resize; }
.ch-s  { left: 50%; margin-left: -8px; bottom: -8px; cursor: ns-resize; }
.ch-se { right: -8px; bottom: -8px; cursor: nwse-resize; }

/* 자르기 액션 바 */
#crop-bar {
  position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 8px;
  background: var(--ui-surface);
  border-radius: var(--radius-pill);
  padding: 6px 8px 6px 18px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.16);
  z-index: 20;
}
#crop-info { font-size: 12.5px; color: var(--ui-sub); }
#crop-bar .spacer { flex: 0 0 8px; }

/* 스테이지 HUD (줌 표시 등) */
#stage-hud {
  position: absolute; left: 14px; top: 12px;
  font-size: 11.5px; color: var(--ui-sub);
  background: rgba(255,255,255,0.82);
  padding: 3px 10px; border-radius: var(--radius-pill);
  pointer-events: none;
}

/* ---------- 오른쪽 패널 ---------- */
#panel {
  flex: 0 0 var(--panel-w);
  background: var(--ui-surface);
  border-left: 1px solid var(--ui-border);
  display: flex;
  min-height: 0;
}
#panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 10px 18px 32px;
  scrollbar-width: thin;
}
#panel.disabled { pointer-events: none; opacity: 0.45; }

.p-section { border-bottom: 1px solid var(--ui-border); padding: 14px 0 16px; }
.p-section:first-child { padding-top: 8px; }
.p-section:last-child { border-bottom: 0; }
.p-section h2 {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.1px;
  display: flex; align-items: center;
}
.file-info { font-size: 12.5px; color: var(--ui-sub); line-height: 1.5; word-break: break-all; }
.sub-h { font-size: 12px; color: var(--ui-sub); margin: 12px 0 8px; }
.hint { font-size: 11.5px; color: var(--ui-faint); margin: 8px 0; line-height: 1.45; }

/* 칩 */
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  appearance: none; font: inherit; font-size: 12.5px;
  padding: 5px 13px; border-radius: var(--radius-pill);
  border: 1px solid var(--ui-border-strong);
  background: var(--ui-surface); color: var(--ui-text);
  cursor: pointer;
}
.chip:hover { background: var(--ui-fill); }
.chip.active { background: var(--ui-text); border-color: var(--ui-text); color: #fff; }

/* 아이콘 버튼 (회전 등) */
.icon-row { display: flex; gap: 8px; margin-bottom: 10px; }
.ibtn {
  appearance: none; border: 1px solid var(--ui-border-strong);
  background: var(--ui-surface); color: var(--ui-text);
  width: 38px; height: 34px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.ibtn svg { width: 18px; height: 18px; }
.ibtn:hover { background: var(--ui-fill); }

/* 슬라이더 */
.slider-row {
  display: grid;
  grid-template-columns: 76px 1fr 46px;
  align-items: center;
  gap: 10px;
  padding: 5px 0;
}
.slider-row label { font-size: 12.5px; color: var(--ui-text); }
.slider-row output { font-size: 11.5px; color: var(--ui-sub); text-align: right; font-variant-numeric: tabular-nums; }
.slider-row input[type="range"] {
  appearance: none; width: 100%; height: 22px; background: transparent; cursor: pointer;
}
.slider-row input[type="range"]::-webkit-slider-runnable-track {
  height: 3px; border-radius: 2px; background: var(--ui-border-strong);
}
.slider-row input[type="range"]::-webkit-slider-thumb {
  appearance: none; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 1px solid var(--ui-border-strong);
  box-shadow: 0 1px 3px rgba(0,0,0,0.22);
  margin-top: -6.5px;
}
.slider-row input[type="range"]::-moz-range-track { height: 3px; border-radius: 2px; background: var(--ui-border-strong); }
.slider-row input[type="range"]::-moz-range-thumb {
  width: 15px; height: 15px; border-radius: 50%;
  background: #fff; border: 1px solid var(--ui-border-strong);
  box-shadow: 0 1px 3px rgba(0,0,0,0.22);
}

/* 숫자 입력 */
.num-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.num-row label { display: flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--ui-sub); }
.num-row input[type="number"] {
  width: 78px; padding: 5px 8px; font: inherit; font-size: 13px;
  border: 1px solid var(--ui-border-strong); border-radius: 8px;
  background: var(--ui-surface); color: var(--ui-text);
}
.num-row input[type="number"]:focus { outline: 2px solid var(--ui-primary-soft); border-color: var(--ui-primary); }
.pad-row label { gap: 4px; }
.pad-row input[type="number"] { width: 54px; }
.lock {
  width: 30px; height: 30px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--ui-border-strong); cursor: pointer;
  color: var(--ui-faint); flex: 0 0 auto;
}
.lock svg { width: 15px; height: 15px; }
.lock.on { color: var(--ui-primary); border-color: var(--ui-primary); background: var(--ui-primary-soft); }
.row-actions { display: flex; gap: 4px; margin-top: 6px; flex-wrap: wrap; }

.pad-color-row { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.pad-color-row > label:first-child { font-size: 12.5px; color: var(--ui-sub); }
.pad-color-row input[type="color"] {
  width: 34px; height: 28px; padding: 2px; border: 1px solid var(--ui-border-strong);
  border-radius: 7px; background: var(--ui-surface); cursor: pointer;
}
.check-label { display: flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--ui-sub); cursor: pointer; }

.save-row { margin-bottom: 4px; }
.save-row label { display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: var(--ui-sub); }
.save-row select {
  font: inherit; font-size: 13px; padding: 5px 10px;
  border: 1px solid var(--ui-border-strong); border-radius: 8px;
  background: var(--ui-surface); color: var(--ui-text);
}

/* 토스트 */
#toast-area {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  z-index: 100; pointer-events: none;
}
.toast {
  background: rgba(29, 29, 31, 0.92);
  color: #fff; font-size: 13px;
  padding: 9px 18px; border-radius: var(--radius-pill);
  box-shadow: 0 6px 22px rgba(0,0,0,0.25);
  animation: toast-in 0.22s ease;
}
.toast.out { opacity: 0; transition: opacity 0.3s; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- 툴 레일 (2단계) ---------- */
#tool-rail {
  flex: 0 0 52px;
  background: var(--ui-surface);
  border-right: 1px solid var(--ui-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 0;
  overflow-y: auto;
}
.tbtn {
  appearance: none; border: 0; background: transparent;
  width: 38px; height: 38px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--ui-sub); cursor: pointer;
}
.tbtn svg { width: 19px; height: 19px; }
.tbtn:hover { background: var(--ui-fill); color: var(--ui-text); }
.tbtn.active { background: var(--ui-primary-soft); color: var(--ui-primary); }
.tbtn:disabled { color: var(--ui-faint); cursor: default; background: none; }
.t-divider { width: 22px; height: 1px; background: var(--ui-border); margin: 3px 0; flex: 0 0 auto; }

/* 도구 옵션 블록 */
.tool-block .opt-row { display: flex; align-items: center; gap: 10px; margin: 6px 0; }
.tool-block .opt-row > label { font-size: 12.5px; color: var(--ui-sub); min-width: 40px; }
.tool-block .opt-row input[type="color"] {
  width: 34px; height: 28px; padding: 2px;
  border: 1px solid var(--ui-border-strong); border-radius: 7px;
  background: var(--ui-surface); cursor: pointer;
}
.tool-block .opt-row select {
  flex: 1; font: inherit; font-size: 12.5px; padding: 4px 8px;
  border: 1px solid var(--ui-border-strong); border-radius: 8px;
  background: var(--ui-surface); color: var(--ui-text);
}
.tool-block textarea {
  width: 100%; font: inherit; font-size: 13px;
  padding: 7px 9px; margin: 6px 0;
  border: 1px solid var(--ui-border-strong); border-radius: 9px;
  background: var(--ui-surface); color: var(--ui-text); resize: vertical;
}
.tool-block textarea:focus { outline: 2px solid var(--ui-primary-soft); border-color: var(--ui-primary); }
#curve-editor {
  width: 100%; height: auto;
  border: 1px solid var(--ui-border);
  border-radius: 10px;
  margin: 8px 0 2px;
  touch-action: none;
}
#btn-auto-wb.on { color: #fff; background: var(--ui-text); }
#btn-tool-delete { color: var(--ui-danger); }
#btn-tool-delete:hover { background: rgba(215, 0, 21, 0.08); }

/* region 오버레이 */
#region-overlay {
  position: absolute;
  border: 1.5px dashed var(--ui-primary);
  border-radius: 50%;
  pointer-events: none;
}
#region-overlay.oof { border-color: #af52de; }
#region-overlay .rh {
  position: absolute; width: 13px; height: 13px;
  background: #fff; border: 2px solid var(--ui-primary); border-radius: 50%;
  pointer-events: auto;
}
#region-overlay.oof .rh { border-color: #af52de; }
.rh-nw { left: -7px; top: -7px; cursor: nwse-resize; }
.rh-ne { right: -7px; top: -7px; cursor: nesw-resize; }
.rh-sw { left: -7px; bottom: -7px; cursor: nesw-resize; }
.rh-se { right: -7px; bottom: -7px; cursor: nwse-resize; }

/* 브러시 커서 — fixed로 스크롤 영역과 분리(넘침 시 가로 스크롤바 생성 방지) */
#brush-cursor {
  position: fixed;
  border: 1.5px solid rgba(255,255,255,0.95);
  outline: 1px solid rgba(0,0,0,0.55);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 5;
}

/* ---------- 3단계: 모드 탭 · 페이지 ---------- */
#mode-nav {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 20px;
  background: var(--ui-surface);
  border-bottom: 1px solid var(--ui-border);
}
.mtab {
  appearance: none; border: 0; background: transparent;
  font: inherit; font-size: 13.5px; color: var(--ui-sub);
  padding: 6px 16px; border-radius: var(--radius-pill);
  cursor: pointer;
}
.mtab:hover { background: var(--ui-fill); color: var(--ui-text); }
.mtab.active { background: var(--ui-text); color: #fff; font-weight: 500; }

.mode-page { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.mode-body {
  flex: 1;
  display: flex;
  gap: 18px;
  padding: 18px 20px;
  overflow: auto;
  min-height: 0;
}
.tools-body { align-items: flex-start; flex-wrap: wrap; }
.mode-col { display: flex; flex-direction: column; gap: 14px; min-height: 0; }
.files-col { flex: 0 0 340px; }
.opts-col { flex: 1 1 380px; max-width: 560px; }
.card {
  background: var(--ui-surface);
  border-radius: var(--radius-card);
  padding: 16px 18px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.card h3 { margin: 0 0 10px; font-size: 13.5px; font-weight: 600; }
.card h3:not(:first-child) { margin-top: 16px; }
.card .opt-row { display: flex; align-items: center; gap: 10px; margin: 8px 0; }
.card .opt-row > label { font-size: 12.5px; color: var(--ui-sub); }
.card textarea {
  width: 100%; font: inherit; font-size: 13px;
  padding: 7px 9px; margin: 6px 0;
  border: 1px solid var(--ui-border-strong); border-radius: 9px;
  background: var(--ui-surface); resize: vertical;
}
.preview-box {
  background: var(--ui-fill);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  overflow: auto;
  min-height: 120px;
  max-height: 420px;
}
.preview-box canvas { max-width: 100%; max-height: 400px; display: block; }

.filelist { display: flex; flex-direction: column; gap: 6px; max-height: 320px; overflow: auto; margin-bottom: 8px; }
.fitem {
  display: flex; align-items: center; gap: 10px;
  padding: 5px 8px;
  border: 1px solid var(--ui-border);
  border-radius: 10px;
  background: var(--ui-surface);
}
.fitem img { width: 52px; height: 40px; object-fit: cover; border-radius: 6px; background: var(--ui-fill); flex: 0 0 auto; }
.fitem .fname { flex: 1; font-size: 12px; color: var(--ui-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fitem .fsize { font-size: 11px; color: var(--ui-faint); flex: 0 0 auto; }
.fitem .fbtns { display: flex; gap: 2px; flex: 0 0 auto; }
.fbtn {
  appearance: none; border: 0; background: none; cursor: pointer;
  width: 24px; height: 24px; border-radius: 7px; color: var(--ui-sub);
  font-size: 13px; line-height: 1;
}
.fbtn:hover { background: var(--ui-fill); color: var(--ui-text); }
.fbtn.del:hover { color: var(--ui-danger); background: rgba(215,0,21,0.08); }
.filelist-empty { font-size: 12.5px; color: var(--ui-faint); padding: 18px 0; text-align: center; }

.pos-grid {
  display: grid; grid-template-columns: repeat(3, 44px); gap: 5px;
  margin: 6px 0;
}
.pos-cell {
  appearance: none; border: 1px solid var(--ui-border-strong); background: var(--ui-surface);
  height: 30px; border-radius: 8px; cursor: pointer;
}
.pos-cell.active { background: var(--ui-text); border-color: var(--ui-text); }

.progress {
  height: 8px; border-radius: 5px; background: var(--ui-fill-hover);
  overflow: hidden; margin: 10px 0 6px;
}
.progress > div { height: 100%; width: 0; background: var(--ui-primary); border-radius: 5px; transition: width 0.15s; }

.gif-result { max-width: 100%; max-height: 300px; border-radius: 10px; margin: 8px 0; }

.tools-body .tool-card { flex: 1 1 380px; max-width: 560px; }
.picker-stage { display: flex; gap: 10px; align-items: flex-start; margin: 8px 0; }
.picker-stage .preview-box { flex: 1; }
#picker-canvas { cursor: crosshair; }
#picker-loupe { border: 1px solid var(--ui-border-strong); border-radius: 10px; flex: 0 0 auto; image-rendering: pixelated; }
.picker-out { display: flex; gap: 12px; align-items: center; }
.swatch { width: 64px; height: 64px; border-radius: 14px; border: 1px solid var(--ui-border-strong); background: repeating-conic-gradient(#e8e8ec 0 25%, #fff 0 50%) 0 0/16px 16px; }
.picker-vals { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.pv-row { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--ui-sub); }
.pv-row input {
  flex: 1; font: inherit; font-size: 12.5px; padding: 5px 8px;
  border: 1px solid var(--ui-border); border-radius: 8px;
  background: var(--ui-fill); color: var(--ui-text); font-variant-numeric: tabular-nums;
}
.copy-btn { padding: 3px 10px; font-size: 12px; }
.rename-opts input[type="text"] { width: 110px; }
.rename-opts input[type="number"] { width: 60px; }

@media (max-width: 1100px) {
  .mode-body { flex-direction: column; }
  .files-col, .opts-col { flex: 1 1 auto; max-width: none; width: 100%; }
}

@media (max-width: 900px) {
  #panel { flex-basis: 300px; }
  .brand-text small { display: none; }
  #tool-rail { flex-basis: 44px; }
}