/* ============================================================
   壁打ちくん - キャンバスモード（自由配置エディタ）
   ============================================================ */

/* --- ツールバー --- */
.kbc-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.kbc-tool-group {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-right: 10px;
  margin-right: 4px;
  border-right: 1px solid var(--border-color);
}
.kbc-tool-group:last-child { border-right: none; }

.kbc-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 6px 11px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-family: var(--font-main);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.kbc-btn:hover:not(:disabled) {
  background: rgba(59, 130, 246, 0.25);
  border-color: var(--primary);
}
.kbc-btn:disabled { opacity: 0.35; cursor: not-allowed; }

.kbc-tool-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-right: 2px;
  white-space: nowrap;
}

.kbc-select {
  background: var(--bg-app);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-family: var(--font-main);
  cursor: pointer;
}

.kbc-color {
  width: 30px;
  height: 28px;
  padding: 2px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-app);
  cursor: pointer;
}

.kbc-num {
  width: 56px;
  background: var(--bg-app);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 5px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-family: var(--font-main);
}

/* 要素未選択のときは書式グループを淡くする */
.kbc-props.is-disabled { opacity: 0.4; pointer-events: none; }

/* --- 作業領域 --- */
.kbc-workspace {
  flex: 1;
  overflow: auto;
  background:
    repeating-conic-gradient(#1a2436 0% 25%, #151d2c 0% 50%) 50% / 24px 24px;
  padding: 24px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.kbc-viewport {
  position: relative;
  flex-shrink: 0;
}

.kbc-scaler {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: top left;
}

/* --- ステージ（保存対象のルート） --- */
.kbc-stage {
  position: relative;
  background: #ffffff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

/* --- 配置要素 --- */
.kbc-item {
  position: absolute;
  box-sizing: border-box;
  cursor: move;
}

.kbc-item img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
}

.kbc-item[data-kind="text"] {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
  overflow: hidden;
}

.kbc-text-body {
  width: 100%;
  height: 100%;
  outline: none;
  word-break: break-word;
}
.kbc-text-body p { margin: 0 0 0.4em; }
.kbc-text-body p:last-child { margin-bottom: 0; }

/* 編集していない要素の枠線（編集時の目印。保存内容には含まれない） */
.kbc-item[data-kind="text"]::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px dashed rgba(148, 163, 184, 0.5);
  pointer-events: none;
}

.kbc-item.is-editing {
  cursor: text;
  z-index: 999999 !important;
}
.kbc-item.is-editing::after {
  border: 2px solid var(--primary);
}
.kbc-item.is-editing .kbc-text-body { cursor: text; user-select: text; }

/* --- 矢印 ---
   矢じりは data-shape を見て擬似要素で描く。
   保存されるHTMLに要素は増えず、サニタイズの許可対象も増やさずに済む。
   色は要素の color を currentColor 経由で受け取る。
   大きさは JS が --kbc-arrow に線の太さ×4.5 を書き込む。 */
.kbc-item[data-shape="arrow"]::after,
.kbc-item[data-shape="arrow2"]::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  transform: translate(0, -50%);
  width: 0;
  height: 0;
  border-style: solid;
  border-top-width: calc(var(--kbc-arrow, 14px) * 0.55);
  border-bottom-width: calc(var(--kbc-arrow, 14px) * 0.55);
  border-left-width: var(--kbc-arrow, 14px);
  border-right-width: 0;
  border-top-color: transparent;
  border-bottom-color: transparent;
  border-left-color: currentColor;
  border-right-color: transparent;
  pointer-events: none;
}

/* 両矢印は左端にも矢じりを描く */
.kbc-item[data-shape="arrow2"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  transform: translate(0, -50%);
  width: 0;
  height: 0;
  border-style: solid;
  border-top-width: calc(var(--kbc-arrow, 14px) * 0.55);
  border-bottom-width: calc(var(--kbc-arrow, 14px) * 0.55);
  border-right-width: var(--kbc-arrow, 14px);
  border-left-width: 0;
  border-top-color: transparent;
  border-bottom-color: transparent;
  border-right-color: currentColor;
  border-left-color: transparent;
  pointer-events: none;
}

/* --- 選択枠とハンドル --- */
.kbc-overlay {
  position: absolute;
  pointer-events: none;
  z-index: 1000000;
  outline: 2px solid var(--primary);
  outline-offset: 0;
  box-sizing: border-box;
}

.kbc-handle {
  position: absolute;
  width: 10px;
  height: 10px;
  background: #ffffff;
  border: 2px solid var(--primary);
  border-radius: 2px;
  pointer-events: auto;
  box-sizing: border-box;
}

.kbc-handle-nw { left: -5px;  top: -5px;    cursor: nwse-resize; }
.kbc-handle-n  { left: 50%;   top: -5px;    margin-left: -5px; cursor: ns-resize; }
.kbc-handle-ne { right: -5px; top: -5px;    cursor: nesw-resize; }
.kbc-handle-e  { right: -5px; top: 50%;     margin-top: -5px;  cursor: ew-resize; }
.kbc-handle-se { right: -5px; bottom: -5px; cursor: nwse-resize; }
.kbc-handle-s  { left: 50%;   bottom: -5px; margin-left: -5px; cursor: ns-resize; }
.kbc-handle-sw { left: -5px;  bottom: -5px; cursor: nesw-resize; }
.kbc-handle-w  { left: -5px;  top: 50%;     margin-top: -5px;  cursor: ew-resize; }

.kbc-handle-rot {
  left: 50%;
  top: -28px;
  margin-left: -6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  cursor: grab;
  background: var(--primary);
  border-color: #ffffff;
}
.kbc-handle-rot:active { cursor: grabbing; }

/* --- 閲覧モード（読み取り専用） ---
   is-readonly は KabeuchiCanvas が .kbc-workspace に付与する */
.kbc-workspace.is-readonly .kbc-item { cursor: default; pointer-events: none; }
.kbc-workspace.is-readonly .kbc-item[data-kind="text"]::after { display: none; }
.kbc-workspace.is-readonly .kbc-overlay { display: none !important; }

/* 親(.main-editor-container)がflex縦並びなので、残り高さを占有させる。
   min-height:0 が無いと中身がはみ出してスクロールしなくなる。 */
.kbc-root {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

/* --- ヒント --- */
.kbc-hint {
  padding: 6px 16px;
  font-size: 0.73rem;
  color: var(--text-muted);
  background: var(--bg-app);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}
.kbc-hint kbd {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  padding: 1px 5px;
  font-family: inherit;
  font-size: 0.9em;
}

/* --- 画像選択用の隠しinput --- */
.kbc-file-input { display: none; }

/* --- 小さい画面での折り返し --- */
@media (max-width: 1100px) {
  .kbc-toolbar { padding: 8px 10px; gap: 4px; }
  .kbc-tool-group { padding-right: 6px; margin-right: 2px; }
  .kbc-btn { padding: 5px 8px; font-size: 0.78rem; }
}