/**
 * Mirror Symmetry Art - v1.3.0
 * @license GPL v2 or later
 */

/* ==========================================================================
   CSS変数
   ========================================================================== */
.mirror-art-container {
  --c-ink:      #1e3a5f;
  --c-line:     #dde3ec;
  --c-panel:    #ffffff;
  --c-bg:       #f0f4f9;
  --c-accent:   #2563eb;
  --c-muted:    #7a8faa;
  --c-ok:       #10b981;
  --c-warn:     #f59e0b;
  --c-active:   #e8f0fe;
  --c-special:  #7c3aed;
  --c-radius:   10px;
  --sidebar-w:  230px;
  --tab-h:      36px;
  --bg-image:   url("https://ict-primaryschool-juniorhighschool.com/wp-content/uploads/2026/05/ChatGPT-Image-2026%E5%B9%B45%E6%9C%8816%E6%97%A5-08_45_15.jpg");
}

/* ==========================================================================
   リセット
   ========================================================================== */
.mirror-art-container,
.mirror-art-container *,
.mirror-art-container *::before,
.mirror-art-container *::after {
  box-sizing: border-box !important;
  margin: 0; padding: 0;
}

.mirror-art-container {
  font-family: "BIZ UDGothic","Hiragino Kaku Gothic ProN",system-ui,sans-serif !important;
  font-size: 13px !important;
  line-height: 1.5 !important;
  background: var(--c-bg) var(--bg-image) center/cover no-repeat;
  color: var(--c-ink);
  border-radius: var(--c-radius);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 420px;
}

.mirror-art-container h2,
.mirror-art-container h3 {
  font-weight: 700 !important;
  line-height: 1.2 !important;
  margin: 0 !important; padding: 0 !important;
  border: none !important; text-shadow: none !important;
}
.mirror-art-container p { margin: 0 !important; padding: 0 !important; }
.mirror-art-container button {
  font-family: inherit !important;
  border: none !important; outline: none !important;
  text-decoration: none !important; text-shadow: none !important;
  cursor: pointer;
}
.mirror-art-container input,
.mirror-art-container select {
  font-family: inherit !important;
  outline: none !important; box-shadow: none !important;
}

/* ==========================================================================
   サイドバー内タイトル
   ========================================================================== */
.mirror-art-app-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-ink);
  padding-bottom: 10px;
  margin-bottom: 2px;
  border-bottom: 1px solid var(--c-line);
  letter-spacing: 0.02em;
}

/* ==========================================================================
   タブバー（目立つデザイン）
   ========================================================================== */
.mirror-art-tabbar {
  height: var(--tab-h);
  display: flex;
  align-items: stretch;
  background: rgba(30, 58, 95, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-bottom: none;
  flex-shrink: 0;
  padding: 0 6px;
  gap: 2px;
  overflow-x: auto;
  overflow-y: hidden;
}

.mirror-art-tab-list {
  display: flex;
  align-items: stretch;
  gap: 2px;
}

.mirror-art-tab-btn {
  height: 100%;
  padding: 0 14px;
  background: transparent !important;
  border: none !important;
  border-bottom: 3px solid transparent !important;
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,.55);
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  box-shadow: none !important;
}

.mirror-art-tab-btn:hover { color: rgba(255,255,255,.85); }

.mirror-art-tab-active {
  color: #fff !important;
  border-bottom-color: var(--c-accent) !important;
  background: rgba(255,255,255,.1) !important;
}

/* 特別タブ */
.mirror-art-tab-special {
  color: #c4b5fd !important;
  padding: 0 14px;
  font-weight: 700;
}

.mirror-art-tab-special.mirror-art-tab-active {
  color: #fff !important;
  border-bottom-color: #a78bfa !important;
  background: rgba(167,139,250,.2) !important;
}

.mirror-art-tab-del {
  font-size: 14px;
  color: rgba(255,255,255,.4);
  padding: 0 2px;
  border-radius: 3px;
  transition: color 0.1s;
}
.mirror-art-tab-del:hover { color: var(--c-warn); }

.mirror-art-tab-add {
  margin: auto 2px;
  width: 26px; height: 26px;
  border-radius: 6px;
  background: rgba(255,255,255,.12) !important;
  border: 1.5px solid rgba(255,255,255,.25) !important;
  font-size: 16px;
  color: rgba(255,255,255,.7);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: color 0.15s, background 0.15s;
  box-shadow: none !important;
}
.mirror-art-tab-add:hover {
  color: #fff;
  background: rgba(255,255,255,.2) !important;
}

/* ==========================================================================
   メインレイアウト
   ========================================================================== */
.mirror-art-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr var(--sidebar-w);
  gap: 6px;
  padding: 6px;
  min-height: 0;
  overflow: hidden;
}

/* ==========================================================================
   グリッド
   ========================================================================== */
.mirror-art-grid-wrap {
  display: grid;
  gap: 6px;
  min-height: 0; min-width: 0;
}

.mirror-art-grid-1 { grid-template-columns: 1fr;       grid-template-rows: 1fr;    }
.mirror-art-grid-2 { grid-template-columns: 1fr 1fr;   grid-template-rows: 1fr;    }
.mirror-art-grid-4 { grid-template-columns: 1fr 1fr;   grid-template-rows: 1fr 1fr;}

/* セル */
.mirror-art-cell {
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  border: 2px solid rgba(255,255,255,0.7);
  border-radius: var(--c-radius);
  position: relative;
  overflow: hidden;
  cursor: crosshair;
  min-height: 0; min-width: 0;
  transition: border-color 0.15s;
}

.mirror-art-cell-active {
  border-color: var(--c-accent) !important;
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

.mirror-art-cell-active::after {
  content: '✏️ 編集中';
  position: absolute;
  top: 6px; left: 6px;
  background: var(--c-accent);
  color: #fff;
  font-size: 10px; font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  pointer-events: none;
  line-height: 1.5;
  font-family: "BIZ UDGothic", system-ui, sans-serif;
}

/* 特別タブのセル */
.mirror-art-cell-special {
  border-color: rgba(124,58,237,.25) !important;
}

.mirror-art-cell-special::after {
  display: none !important; /* 「編集中」ラベルは不要 */
}

/* モードラベル */
.mirror-art-special-label {
  position: absolute;
  top: 6px; left: 6px;
  background: rgba(124,58,237,.85);
  color: #fff;
  font-size: 10px; font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  pointer-events: none;
  z-index: 2;
  font-family: "BIZ UDGothic", system-ui, sans-serif;
}

.mirror-art-canvas {
  width: 100%; height: 100%;
  display: block;
  touch-action: none;
}

.mirror-art-guide {
  position: absolute; inset: 0;
  pointer-events: none;
}

/* ==========================================================================
   サイドバー
   ========================================================================== */
.mirror-art-sidebar {
  width: var(--sidebar-w);
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--c-radius);
  padding: 10px 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
}

.mirror-art-group {
  padding: 6px 0;
  border-bottom: 1px solid var(--c-line);
}
.mirror-art-group:first-child { padding-top: 0; }
.mirror-art-group:last-child  { border-bottom: none; padding-bottom: 0; }

.mirror-art-group-title {
  font-size: 10px !important;
  font-weight: 700 !important;
  color: var(--c-muted) !important;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 5px !important;
}

/* ---------- レイアウトボタン ---------- */
.mirror-art-layout-btns {
  display: flex;
  gap: 6px;
}

.mirror-art-layout-btn {
  flex: 1;
  aspect-ratio: 1;
  max-width: 48px;
  border: 2px solid var(--c-line) !important;
  border-radius: 8px;
  background: var(--c-bg) !important;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.15s, background 0.15s;
  box-shadow: none !important;
}
.mirror-art-layout-btn:hover    { border-color: var(--c-accent) !important; background: var(--c-active) !important; }
.mirror-art-layout-active       { border-color: var(--c-accent) !important; background: var(--c-active) !important; }

.mirror-art-layout-icon {
  display: grid; gap: 2px;
  width: 20px; height: 20px;
}
.mirror-art-layout-icon::before,
.mirror-art-layout-icon::after {
  content: ''; background: var(--c-muted); border-radius: 2px;
}
.mirror-art-layout-active .mirror-art-layout-icon::before,
.mirror-art-layout-active .mirror-art-layout-icon::after { background: var(--c-accent); }

.mirror-art-layout-icon-1 { grid-template-columns: 1fr; grid-template-rows: 1fr; }
.mirror-art-layout-icon-1::after { display: none; }

.mirror-art-layout-icon-2 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr; }

.mirror-art-layout-icon-4 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; width: 18px; height: 18px; }
.mirror-art-layout-icon-4::before {
  content: '';
  box-shadow: 10px 0 0 var(--c-muted), 0 10px 0 var(--c-muted), 10px 10px 0 var(--c-muted);
}
.mirror-art-layout-icon-4::after { display: none; }
.mirror-art-layout-active .mirror-art-layout-icon-4::before {
  box-shadow: 10px 0 0 var(--c-accent), 0 10px 0 var(--c-accent), 10px 10px 0 var(--c-accent);
}

/* ---------- モードボタン（2×2グリッド） ---------- */
.mirror-art-mode-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
}

.mirror-art-mode-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 5px 4px;
  border: 2px solid var(--c-line) !important;
  border-radius: 8px;
  background: var(--c-bg) !important;
  transition: border-color 0.15s, background 0.15s;
  box-shadow: none !important;
  cursor: pointer;
}

.mirror-art-mode-btn:hover {
  border-color: var(--c-accent) !important;
  background: var(--c-active) !important;
}

.mirror-art-mode-active {
  border-color: var(--c-accent) !important;
  background: var(--c-active) !important;
}

.mirror-art-mode-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--c-muted);
  line-height: 1;
}

.mirror-art-mode-active .mirror-art-mode-label {
  color: var(--c-accent);
}

/* モードSVGアイコン */
.mirror-art-mode-svg {
  width: 36px; height: 28px;
  color: var(--c-muted);
  flex-shrink: 0;
}

.mirror-art-mode-active .mirror-art-mode-svg {
  color: var(--c-accent);
}

/* ---------- ツールボタン ---------- */
.mirror-art-tool-section {
  display: flex; gap: 5px;
  align-items: center; flex-wrap: wrap;
}

.mirror-art-tool-btn {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border: 1.5px solid var(--c-line) !important;
  border-radius: 9px;
  background: var(--c-bg) !important;
  flex-shrink: 0;
  transition: background 0.12s;
  box-shadow: none !important;
  color: var(--c-ink);
}

/* SVGアイコンのサイズ */
.mirror-art-tool-btn svg {
  width: 24px; height: 24px;
  flex-shrink: 0;
}

.mirror-art-tool-btn:hover { background: var(--c-line) !important; }

.mirror-art-tool-active {
  background: var(--c-accent) !important;
  border-color: var(--c-accent) !important;
  color: #fff !important;
}

/* レインボーツールのアクティブ状態は虹グラデーション */
.mirror-art-rainbow-tool.mirror-art-tool-active {
  background: linear-gradient(135deg,
    #ef4444 0%, #f97316 20%, #eab308 40%,
    #22c55e 60%, #3b82f6 80%, #8b5cf6 100%
  ) !important;
  border-color: transparent !important;
  color: #fff !important;
}

.mirror-art-tool-btn.mirror-art-small {
  width: 34px; height: 34px;
  border-radius: 7px;
}
.mirror-art-tool-btn.mirror-art-small svg { width: 18px; height: 18px; }

.mirror-art-ghost {
  background: var(--c-panel) !important;
  color: var(--c-ink) !important;
  border: 1.5px solid var(--c-line) !important;
}
.mirror-art-ghost:hover { background: var(--c-bg) !important; }

.mirror-art-warn {
  background: #fff8ee !important;
  border-color: var(--c-warn) !important;
  color: var(--c-warn) !important;
}
.mirror-art-warn:hover { background: #fde9c0 !important; }

/* ---------- コントロール行 ---------- */
.mirror-art-row {
  display: flex; align-items: center;
  gap: 6px; margin-bottom: 4px;
}
.mirror-art-row:last-child { margin-bottom: 0; }

.mirror-art-label {
  font-size: 11px; color: var(--c-muted);
  white-space: nowrap; min-width: 24px;
}

.mirror-art-mode-select {
  flex: 1;
  padding: 4px 6px;
  border: 1.5px solid var(--c-line) !important;
  border-radius: 6px;
  background: var(--c-bg);
  font-size: 12px; color: var(--c-ink);
}

.mirror-art-segments-slider,
.mirror-art-size-slider {
  flex: 1; min-width: 0;
  padding: 0; border: none !important; background: transparent !important;
}

.mirror-art-val {
  font-size: 11px; color: var(--c-muted);
  min-width: 16px; text-align: right;
}

.mirror-art-checkbox-label {
  display: flex; align-items: center;
  gap: 5px; font-size: 12px; color: var(--c-ink); cursor: pointer;
}

/* ---------- カラーセクション ---------- */
.mirror-art-color-section {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
}

/* カスタムカラーピッカー */
.mirror-art-color-picker {
  width: 36px; height: 36px; padding: 2px;
  border: 2px solid var(--c-line) !important;
  border-radius: 8px; background: var(--c-panel); cursor: pointer;
  flex-shrink: 0;
}

/* スウォッチ：横1段 */
.mirror-art-swatches {
  display: flex;
  flex-direction: row;
  gap: 4px;
  flex: 1;
}

.mirror-art-swatch {
  flex: 1;
  aspect-ratio: 1;
  min-width: 0;
  border: 2px solid var(--c-panel) !important;
  outline: 2px solid var(--c-line);
  border-radius: 8px;
  cursor: pointer;
  transition: outline-color 0.12s, transform 0.12s;
}
.mirror-art-swatch:hover  { outline-color: var(--c-muted); transform: scale(1.06); }
.mirror-art-swatch-active { outline-color: var(--c-accent) !important; outline-width: 2.5px; transform: scale(1.04); }

/* ---------- 保存ボタン2択 ---------- */
.mirror-art-save-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
}

.mirror-art-save-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 5px 4px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
  box-shadow: none !important;
}

.mirror-art-save-transparent {
  background: var(--c-muted) !important;
  color: #fff;
  border: none !important;
}

.mirror-art-save-white {
  background: var(--c-panel) !important;
  color: var(--c-ink);
  border: 2px solid var(--c-line) !important;
}

.mirror-art-save-btn:hover { opacity: .82; }
.mirror-art-save-btn:active { opacity: .65; }

/* 保存プレビュー正方形 */
.mirror-art-save-preview {
  display: block;
  width: 22px; height: 22px;
  border-radius: 4px;
  flex-shrink: 0;
}

.mirror-art-save-preview-transparent {
  background:
    repeating-conic-gradient(#ccc 0% 25%, #fff 0% 50%)
    0 0 / 8px 8px;
  border: 1px solid rgba(255,255,255,.4);
}

.mirror-art-save-preview-white {
  background: #fff;
  border: 1px solid var(--c-line);
}

/* ==========================================================================
   シンメトリー制御
   ========================================================================== */
.mirror-art-kaleido-only {
  opacity: 0.35; pointer-events: none;
}
.mirror-art-kaleido-active .mirror-art-kaleido-only {
  opacity: 1; pointer-events: auto;
}

/* ==========================================================================
   スライダー
   ========================================================================== */
.mirror-art-container input[type="range"] {
  -webkit-appearance: none; appearance: none;
  height: 6px;
  background: linear-gradient(to right, var(--c-accent) 0%, var(--c-accent) 20%, var(--c-line) 20%);
  border-radius: 3px;
}
.mirror-art-container input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 17px; height: 17px;
  background: var(--c-accent);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(37,99,235,.4);
  border-radius: 50%; cursor: pointer;
}
.mirror-art-container input[type="range"]::-moz-range-thumb {
  width: 17px; height: 17px;
  background: var(--c-accent);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(37,99,235,.4);
  border-radius: 50%; border: none; cursor: pointer;
}
.mirror-art-container input[type="checkbox"] {
  width: 14px; height: 14px; accent-color: var(--c-accent);
}

/* ==========================================================================
   ユーティリティ
   ========================================================================== */
.mirror-art-hidden { display: none !important; }

/* ==========================================================================
   レスポンシブ
   ========================================================================== */
@media (max-width: 860px) {
  .mirror-art-main { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
  .mirror-art-sidebar {
    width: 100%; flex-direction: row; flex-wrap: wrap;
    max-height: 200px; gap: 6px;
  }
  .mirror-art-group { border-bottom: none; border-right: 1px solid var(--c-line); padding: 0 8px 0 0; }
  .mirror-art-group:last-child { border-right: none; }
}

@media (max-width: 600px) {
  .mirror-art-title { font-size: 12px !important; }
  .mirror-art-hint  { display: none; }
  .mirror-art-main  { padding: 4px; gap: 4px; }
  .mirror-art-grid-2, .mirror-art-grid-4 { grid-template-columns: 1fr; }
}

/* ==========================================================================
   アクセシビリティ
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .mirror-art-container * { transition: none !important; animation: none !important; }
}

@media (prefers-color-scheme: dark) {
  .mirror-art-container {
    --c-bg:    #1a2233;
    --c-panel: #243048;
    --c-ink:   #e8eef6;
    --c-line:  #334060;
    --c-muted: #7a90b0;
    --c-active:#1e3060;
  }
}

@media print {
  .mirror-art-sidebar, .mirror-art-tabbar { display: none !important; }
  .mirror-art-main { grid-template-columns: 1fr !important; }
}