/* 画像ツール共通の画面部品（プレビュー枠・ドロップ枠・市松模様・設定パネル）
   半透明化・リサイズツールで使う。背景透過・白フチツールは tools/image-outline/tool.css に
   同じ見た目の定義を持っている（既存ツールを壊さないよう、あちらは触っていない）。 */
.tool { padding-top: 16px; }

.tool-error {
  margin: 0 0 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: #fef3f2;
  border: 1px solid #fecdca;
  color: var(--color-danger);
  font-size: 0.92rem;
}
.tool-error.is-info {
  background: var(--color-primary-soft);
  border-color: #c7cbff;
  color: #3730a3;
}

/* 透過部分を示す市松模様 */
.checker {
  background-color: #ffffff;
  background-image: conic-gradient(#dfe4ea 25%, transparent 0 50%, #dfe4ea 0 75%, transparent 0);
  background-size: 20px 20px;
}

.editor {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 20px;
  align-items: start;
}

.stage-column {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
}

.stage-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}
.stage-title { font-weight: 700; font-size: 0.95rem; }
.stage-toolbar-actions { display: flex; gap: 8px; }

.stage {
  position: relative;
  height: min(68vh, 620px);
  min-height: 280px;
  border-radius: var(--radius-sm);
  background: #f1f3f8;
  overflow: hidden;
}
.stage.is-dragover { outline: 3px dashed var(--color-primary); outline-offset: -6px; }

.dropzone {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 24px;
  text-align: center;
  border: 2px dashed #c9cfdc;
  border-radius: var(--radius-sm);
}
.dropzone-title { margin: 0; font-weight: 700; font-size: 1.05rem; }
.dropzone-note { margin: 0; color: var(--color-muted); font-size: 0.85rem; }

.panes {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 12px;
}
.panes.is-compare { grid-template-columns: 1fr 1fr; }

.pane {
  margin: 0;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.pane canvas {
  display: block;
  max-width: 100%;
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.08);
}
.pane figcaption {
  display: none;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-muted);
  line-height: 1.2;
}
.panes.is-compare .pane figcaption { display: block; }

.stage-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  font-size: 0.8rem;
  pointer-events: none;
}

/* 設定パネル */
.controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.controls-body {
  margin: 0;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: var(--shadow);
  min-width: 0;
}
.controls-body:disabled { opacity: 0.55; }

.control + .control { margin-top: 18px; }
.control-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.control-label { font-weight: 700; font-size: 0.92rem; }
.control-help { margin: 4px 0 0; color: var(--color-muted); font-size: 0.8rem; line-height: 1.55; }

/* 数値入力（単位付き） */
.number-field {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-muted);
  font-size: 0.9rem;
}
.number-field input {
  width: 5.5em;
  min-height: 36px;
  padding: 4px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: 1rem; /* 16px 未満だと iOS で入力時に画面が拡大される */
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.number-field input:focus-visible { outline: 3px solid rgba(79, 70, 229, 0.35); outline-offset: 1px; }
.number-field input[aria-invalid="true"] { border-color: var(--color-danger); }

input[type="range"] {
  width: 100%;
  margin: 8px 0 0;
  accent-color: var(--color-primary);
  height: 28px;
  cursor: pointer;
}
input[type="range"]:disabled { cursor: not-allowed; }

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  cursor: pointer;
}
.check input { width: 18px; height: 18px; accent-color: var(--color-primary); flex: none; }

.result-meta {
  margin: 0;
  min-height: 1.5em;
  color: var(--color-muted);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
}
.save-note { margin: 0; color: var(--color-muted); font-size: 0.8rem; line-height: 1.55; }

/* スマホ */
@media (max-width: 860px) {
  .editor { grid-template-columns: 1fr; gap: 12px; }
  .stage-column { padding: 8px; }
  /* プレビュー・設定・保存ボタンが1画面に収まる高さ */
  .stage { height: 38vh; min-height: 220px; }
  .stage-toolbar { margin-bottom: 6px; }
  .panes { padding: 8px; gap: 8px; }
}