:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --border: #dde3ec;
  --text: #2b3345;
  --muted: #7a8499;
  --accent: #4f7cff;
  --accent-dark: #3a63d8;
  --danger: #e05555;
  --ok: #2fa763;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Yu Gothic UI", "Meiryo", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.small-text { font-size: 12px; }
.error { color: var(--danger); min-height: 1.2em; }
.highlight strong { color: var(--accent-dark); }

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.app-header h1 { font-size: 20px; margin: 0; }
.app-header .sub { font-size: 13px; color: var(--muted); font-weight: normal; }

main { max-width: 860px; margin: 0 auto; padding: 20px; }

section { margin-bottom: 20px; }
h2 { font-size: 16px; margin: 0 0 10px; }
h3 { font-size: 14px; margin: 12px 0 8px; }
h4 { font-size: 13px; margin: 12px 0 6px; }

/* --- ドロップゾーン --- */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  background: var(--panel);
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone.dragover {
  border-color: var(--accent);
  background: #eef3ff;
}
.dz-icon { font-size: 40px; }
.dz-sub { font-size: 12px; color: var(--muted); }

/* --- ファイル一覧 --- */
.file-list {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.file-list li {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
  width: 120px;
  text-align: center;
  font-size: 11px;
  word-break: break-all;
}
.file-list img {
  width: 100%;
  height: 80px;
  object-fit: contain;
  background:
    repeating-conic-gradient(#e8e8e8 0% 25%, #fff 0% 50%) 0 0 / 16px 16px;
  border-radius: 4px;
}
.file-list .fsize { color: var(--muted); display: block; }
.file-list .remove {
  color: var(--danger);
  cursor: pointer;
  border: none;
  background: none;
  font-size: 11px;
}

/* --- オプション --- */
.options-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
}
.option-row { display: flex; gap: 24px; flex-wrap: wrap; }
.check, .radio { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.sub-panel { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
.sub-panel h3 { margin-top: 0; }
.mode-detail { margin-top: 10px; }
.mode-detail input[type="number"] { width: 90px; }
.batch-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.batch-row label { display: flex; align-items: center; gap: 6px; }
input[type="number"], input[type="text"], select {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

/* --- ボタン --- */
.btn {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
}
.btn:hover { background: var(--accent-dark); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.ghost:hover { background: #eef3ff; }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn.big { padding: 12px 28px; font-size: 16px; }
.btn.danger { background: var(--danger); border-color: var(--danger); }

.action-bar { display: flex; align-items: center; gap: 16px; margin: 20px 0; }
.status { font-size: 14px; color: var(--muted); }
.status.ok { color: var(--ok); }
.status.err { color: var(--danger); }

/* --- 結果 --- */
.result-list { list-style: none; padding: 0; font-size: 13px; }
.result-list li { padding: 3px 0; }
.result-list .ok::before { content: "✅ "; }
.result-list .ng::before { content: "❌ "; }

/* --- モーダル --- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(20, 25, 40, .55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-box {
  background: var(--panel);
  border-radius: 12px;
  padding: 20px 24px;
  width: 520px;
  max-width: 100%;
  max-height: 92vh;
  overflow: auto;
}
.modal-box.wide { width: 1080px; }
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.modal-head h2 { margin: 0; }

/* --- プリセット --- */
.preset-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.preset-table th, .preset-table td {
  border-bottom: 1px solid var(--border);
  padding: 6px 8px;
  text-align: left;
}
.preset-table input { width: 80px; }
.preset-table input.pname { width: 150px; }
.preset-form { display: flex; gap: 8px; flex-wrap: wrap; }
.preset-form input[type="text"] { flex: 1; min-width: 180px; }
.preset-form input[type="number"] { width: 90px; }

/* --- トリミング画面 --- */
.crop-info-bar {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 13px;
  background: #eef3ff;
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 12px;
}
.crop-layout { display: flex; gap: 16px; }
.crop-canvas-wrap {
  flex: 1;
  min-width: 0;
  background: #222;
  border-radius: 8px;
  overflow: hidden;
  max-height: 65vh;
}
#crop-image { display: block; max-width: 100%; }
.crop-side { width: 250px; flex-shrink: 0; }
.modal-head-btns { display: flex; gap: 6px; }
.crop-inputs label { display: block; margin: 6px 0; }
.crop-inputs select { width: 100%; }
.crop-inputs input[type="number"] { width: 100px; }
.ratio-row { display: flex; align-items: center; gap: 6px; }
.ratio-row input { width: 70px; }
.center-btns { display: flex; gap: 6px; flex-wrap: wrap; }
#btn-confirm-crop { margin-top: 16px; width: 100%; }

/* --- 背景透過の設定 --- */
.tp-layout { display: flex; gap: 20px; flex-wrap: wrap; }
.tp-preview { flex: 1 1 320px; min-width: 0; }
.tp-preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 13px;
}
.tp-preview-head select { max-width: 220px; }
.tp-canvas-wrap {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background:
    repeating-conic-gradient(#e8e8e8 0% 25%, #fff 0% 50%) 0 0 / 16px 16px;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}
#tp-canvas { display: block; max-width: 100%; height: auto; }
#tp-canvas.eyedropper { cursor: crosshair; }
#tp-empty { margin: 0; padding: 40px 10px; }
.tp-controls { width: 280px; flex-shrink: 0; }
.tp-controls input[type="range"] { width: 100%; }
.tp-controls h4 { margin: 12px 0 4px; }
.tp-controls p { margin: 2px 0 0; }
.tp-color-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tp-btn-row { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.swatch {
  display: inline-block;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
}
.btn.active { background: var(--accent); color: #fff; }

/* --- 結果のダウンロードリンク --- */
.result-list a { color: var(--accent-dark); margin-left: 6px; }
.result-list .skip::before { content: "⏭ "; }

/* --- フィルター --- */
.fx-preset-bar {
  background: #f7f9fc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.fx-preset-row { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; font-size: 13px; }
.fx-preset-row label { display: flex; align-items: center; gap: 6px; }
.fx-preset-row select { max-width: 220px; }
.fx-controls { width: 320px; flex-shrink: 0; }
.fx-add-row { display: flex; gap: 6px; align-items: center; }
.fx-add-row select { flex: 1; }
.fx-layers { list-style: none; margin: 8px 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.fx-layer {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.fx-layer.selected { border-color: var(--accent); box-shadow: 0 0 0 2px #eef3ff; }
.fx-layer.off .fx-layer-title { color: var(--muted); text-decoration: line-through; }
.fx-layer-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  cursor: pointer;
  font-size: 13px;
}
.fx-layer-title { flex: 1; font-weight: 600; }
.fx-layer-head .btn { padding: 2px 7px; font-size: 12px; }
.fx-layer-body { padding: 4px 10px 10px; border-top: 1px solid var(--border); }
.fx-param { margin: 6px 0; font-size: 12px; }
.fx-param-label { display: flex; justify-content: space-between; margin-bottom: 2px; }
.fx-param input[type="range"] { width: 100%; }
.fx-param select { width: 100%; font-size: 12px; }
.fx-swatches { display: flex; gap: 4px; flex-wrap: wrap; align-items: center; margin-top: 4px; }
.fx-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--border);
  cursor: pointer;
  padding: 0;
}
.fx-swatch.active { box-shadow: 0 0 0 2px var(--accent); }
.fx-swatches input[type="color"] { width: 34px; height: 24px; padding: 0; border: 1px solid var(--border); border-radius: 6px; background: none; }
#fx-canvas { display: block; max-width: 100%; height: auto; }
#fx-canvas.pickpos { cursor: crosshair; }
#fx-empty { margin: 0; padding: 40px 10px; }