/* ドット抜けテスター専用の色・寸法。共通フレームへ影響しないようページ配下へ限定する。 */
body.pixel-tester-page {
  color-scheme: light;
  --pixel-page: #f4f6f8;
  --pixel-surface: #ffffff;
  --pixel-surface-soft: #f6f8fa;
  --pixel-border: #d0d7de;
  --pixel-text: #1f2328;
  --pixel-muted: #57606a;
  --pixel-accent: #0969da;
  --pixel-accent-hover: #0757b5;
  --pixel-notice-text: #0550ae;
  --pixel-notice-bg: #ddf4ff;
  --pixel-notice-border: #b6e3ff;
  --pixel-on-accent: #ffffff;
  --pixel-shadow: 0 14px 36px rgba(31, 35, 40, 0.07);
  --pixel-test-color: #000000;
  --pixel-content-max-width: 1320px;
  --pixel-page-inline-gutter: 40px;
  --pixel-page-inline-gutter-mobile: 20px;
  --pixel-page-padding-block: 40px;
  --pixel-page-padding-block-mobile: 22px;
  --pixel-panel-spacing: 16px;
  --pixel-panel-radius: 12px;
  --pixel-panel-padding: 18px;
  --pixel-panel-padding-mobile: 14px;
  --pixel-control-min-height: 38px;
  --pixel-control-radius: 8px;
  --pixel-focus-ring: rgba(9, 105, 218, 0.24);
  --pixel-selection-bg: var(--pixel-notice-bg);
  --pixel-swatch-border: #8c959f;
  --pixel-overlay-text: var(--pixel-on-accent);
  --pixel-overlay-muted: #d8dee4;
  --pixel-overlay-border: rgba(255, 255, 255, 0.2);
  --pixel-overlay-bg: rgba(13, 17, 23, 0.78);
  --pixel-overlay-shadow: 0 10px 30px rgba(0, 0, 0, 0.24);
  --pixel-overlay-control-border: #57606a;
  --pixel-overlay-control-bg: #24292f;
  --pixel-overlay-control-hover-border: #54aeff;
  --pixel-overlay-control-hover-bg: #32383f;
  --pixel-overlay-inset: 18px;
  --pixel-overlay-inset-mobile: 10px;
  margin: 0;
  min-height: 100vh;
  color: var(--pixel-text);
  background: var(--pixel-page);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

/* ページ基盤 */
.pixel-tester,
.pixel-tester * {
  box-sizing: border-box;
}

body.pixel-tester-page > .pixel-main {
  width: min(var(--pixel-content-max-width), calc(100% - var(--pixel-page-inline-gutter)));
  margin: 0 auto;
  padding: var(--pixel-page-padding-block) 0;
}

/* ページ見出しとナビゲーション */
.pixel-tester .pixel-page-header {
  margin-block-end: 18px;
}

.pixel-tester .pixel-page-title,
.pixel-tester .pixel-panel-title {
  margin: 0;
}

.pixel-tester .pixel-page-title {
  font-size: clamp(1.7rem, 3vw, 2.2rem);
}

.pixel-tester .pixel-page-description {
  margin: 8px 0 0;
  color: var(--pixel-muted);
  line-height: 1.7;
}

.pixel-tester .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-block-end: 12px;
  color: var(--pixel-muted);
  font-size: 0.9rem;
}

.pixel-tester a {
  color: var(--pixel-accent);
  font-weight: 700;
  text-decoration: none;
}

.pixel-tester a:hover,
.pixel-tester a:focus-visible {
  text-decoration: underline;
}

/* パネル共通部品 */
.pixel-tester :is(.pixel-panel-shell, .pixel-panel) {
  margin-block-end: var(--pixel-panel-spacing);
  border: 1px solid var(--pixel-border);
  border-radius: var(--pixel-panel-radius);
  background: var(--pixel-surface);
  box-shadow: var(--pixel-shadow);
}

.pixel-tester .pixel-notice {
  padding: 12px 14px;
  color: var(--pixel-notice-text);
  background: var(--pixel-notice-bg);
  border-color: var(--pixel-notice-border);
  line-height: 1.65;
}

.pixel-tester .pixel-panel {
  padding: var(--pixel-panel-padding);
}

.pixel-tester .pixel-panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-block-end: var(--pixel-panel-spacing);
}

.pixel-tester .pixel-panel-copy {
  min-width: 0;
}

.pixel-tester .pixel-panel-title {
  font-size: 1.08rem;
}

.pixel-tester .pixel-panel-description {
  margin: 6px 0 0;
  color: var(--pixel-muted);
  line-height: 1.6;
}

.pixel-tester .pixel-panel-actions,
.pixel-tester .pixel-test-overlay-actions,
.pixel-tester .pixel-custom-color-controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

/* フォームコントロール */
.pixel-tester button,
.pixel-tester select,
.pixel-tester input {
  color: var(--pixel-text);
  font: inherit;
}

.pixel-tester button,
.pixel-tester select,
.pixel-tester input:not([type="checkbox"]) {
  min-height: var(--pixel-control-min-height);
  border: 1px solid var(--pixel-border);
  border-radius: var(--pixel-control-radius);
  background: var(--pixel-surface-soft);
}

.pixel-tester button {
  padding: 7px 13px;
  font-weight: 700;
  cursor: pointer;
}

.pixel-tester button:hover:not(:disabled) {
  border-color: var(--pixel-accent);
  color: var(--pixel-accent);
}

.pixel-tester button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.pixel-tester .pixel-primary-button {
  border-color: var(--pixel-accent);
  color: var(--pixel-on-accent);
  background: var(--pixel-accent);
}

.pixel-tester .pixel-primary-button:hover:not(:disabled) {
  border-color: var(--pixel-accent-hover);
  color: var(--pixel-on-accent);
  background: var(--pixel-accent-hover);
}

.pixel-tester button:focus-visible,
.pixel-tester select:focus-visible,
.pixel-tester input:focus-visible,
.pixel-tester .pixel-test-surface:focus-visible {
  outline: 3px solid var(--pixel-focus-ring);
  outline-offset: 2px;
}

/* テスト設定 */
.pixel-tester .pixel-settings-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 12px;
}

.pixel-tester .pixel-setting-field {
  display: grid;
  align-content: center;
  gap: 7px;
  color: var(--pixel-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.pixel-tester .pixel-setting-field select {
  width: 100%;
  padding: 7px 36px 7px 10px;
}

.pixel-tester .pixel-custom-color-controls {
  flex-wrap: nowrap;
}

.pixel-tester .pixel-custom-color-controls input[type="color"] {
  width: 54px;
  padding: 4px;
  cursor: pointer;
}

.pixel-tester .pixel-custom-color-controls button {
  flex: 1;
}

.pixel-tester .pixel-check-field {
  display: flex;
  align-items: center;
  min-height: var(--pixel-control-min-height);
  align-self: end;
  padding: 8px 10px;
  border: 1px solid var(--pixel-border);
  border-radius: var(--pixel-control-radius);
  background: var(--pixel-surface-soft);
}

.pixel-tester .pixel-check-field input {
  min-height: auto;
  margin: 0;
  border: 1px solid var(--pixel-border);
  border-radius: var(--pixel-control-radius);
  background: var(--pixel-surface-soft);
  accent-color: var(--pixel-accent);
}

/* ブラウザAPIの状態表示 */
.pixel-tester .pixel-status-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-block-start: 14px;
  padding: 11px 12px;
  border-radius: var(--pixel-control-radius);
  color: var(--pixel-muted);
  background: var(--pixel-surface-soft);
  font-size: 0.9rem;
}

.pixel-tester .pixel-status-list strong {
  color: var(--pixel-text);
}

/* 表示色とパターンの選択 */
.pixel-tester .pixel-frame-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 9px;
}

.pixel-tester .pixel-frame-button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 9px;
  min-width: 0;
  text-align: left;
}

.pixel-tester .pixel-frame-button::before {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  border: 1px solid var(--pixel-swatch-border);
  border-radius: 5px;
  background: var(--frame-swatch, linear-gradient(135deg, #ffffff 0 50%, #24292f 50%));
  content: "";
}

.pixel-tester .pixel-frame-button[aria-pressed="true"] {
  border-color: var(--pixel-accent);
  box-shadow: inset 0 0 0 1px var(--pixel-accent);
  color: var(--pixel-accent);
  background: var(--pixel-selection-bg);
}

/* テストプレビュー */
.pixel-tester .pixel-preview-panel {
  padding: 0;
  overflow: hidden;
}

.pixel-tester .pixel-preview-panel > .pixel-panel-heading {
  margin: 0;
  padding: var(--pixel-panel-padding);
}

.pixel-tester .pixel-test-surface {
  position: relative;
  isolation: isolate;
  min-height: min(62vh, 620px);
  overflow: hidden;
  border-block-start: 1px solid var(--pixel-border);
  color: var(--pixel-overlay-text);
  background: #000000;
  cursor: pointer;
  touch-action: manipulation;
}

.pixel-tester .pixel-test-display {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--pixel-test-color);
}

/*
 * 以下の色値と1px寸法は検査表示そのものを構成する。
 * UI配色用トークンへ置換せず、出力パターンとして固定する。
 */
.pixel-tester .pixel-test-surface[data-frame="checker"] .pixel-test-display {
  background:
    conic-gradient(#ffffff 25%, #000000 0 50%, #ffffff 0 75%, #000000 0)
    0 0 / 32px 32px;
}

.pixel-tester .pixel-test-surface[data-frame="pixel-checker"] .pixel-test-display {
  background:
    conic-gradient(#ffffff 25%, #000000 0 50%, #ffffff 0 75%, #000000 0)
    0 0 / 2px 2px;
}

.pixel-tester .pixel-test-surface[data-frame="horizontal-stripes"] .pixel-test-display {
  background: repeating-linear-gradient(to bottom, #000000 0 1px, #ffffff 1px 2px);
}

.pixel-tester .pixel-test-surface[data-frame="vertical-stripes"] .pixel-test-display {
  background: repeating-linear-gradient(to right, #000000 0 1px, #ffffff 1px 2px);
}

.pixel-tester .pixel-test-surface[data-frame="grayscale"] .pixel-test-display {
  background: linear-gradient(to right, #000000, #ffffff);
}

.pixel-tester .pixel-test-surface[data-frame="rgb-gradient"] .pixel-test-display {
  background: linear-gradient(
    to right,
    #ff0000 0%,
    #ffff00 16.66%,
    #00ff00 33.33%,
    #00ffff 50%,
    #0000ff 66.66%,
    #ff00ff 83.33%,
    #ff0000 100%
  );
}

.pixel-tester .pixel-test-surface[data-frame="alignment-guide"] .pixel-test-display {
  background:
    linear-gradient(#ffffff, #ffffff) center / 1px 100% no-repeat,
    linear-gradient(#ffffff, #ffffff) center / 100% 1px no-repeat,
    #000000;
}

.pixel-tester .pixel-test-surface[data-frame="alignment-guide"] .pixel-test-display::before,
.pixel-tester .pixel-test-surface[data-frame="alignment-guide"] .pixel-test-display::after {
  position: absolute;
  inset: 4%;
  border: 2px solid #ffffff;
  content: "";
}

.pixel-tester .pixel-test-surface[data-frame="alignment-guide"] .pixel-test-display::after {
  inset: 25%;
  border-width: 1px;
  border-radius: 50%;
}

.pixel-tester .pixel-test-surface[data-frame="uniformity"] .pixel-test-display {
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.07), transparent 52%),
    linear-gradient(135deg, #747474, #858585 50%, #767676);
}

.pixel-tester .pixel-test-overlay {
  position: absolute;
  inset: auto var(--pixel-overlay-inset) var(--pixel-overlay-inset);
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 14px;
  border: 1px solid var(--pixel-overlay-border);
  border-radius: 10px;
  color: var(--pixel-overlay-text);
  background: var(--pixel-overlay-bg);
  box-shadow: var(--pixel-overlay-shadow);
  transition: opacity 0.2s ease;
}

.pixel-tester .pixel-test-overlay-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.pixel-tester .pixel-test-overlay-copy strong {
  font-size: 1.05rem;
}

.pixel-tester .pixel-test-overlay-copy span {
  color: var(--pixel-overlay-muted);
  line-height: 1.5;
}

.pixel-tester .pixel-test-key-help {
  font-size: 0.8rem;
}

.pixel-tester .pixel-test-overlay button {
  border-color: var(--pixel-overlay-control-border);
  color: var(--pixel-overlay-text);
  background: var(--pixel-overlay-control-bg);
}

.pixel-tester .pixel-test-overlay button:hover:not(:disabled) {
  border-color: var(--pixel-overlay-control-hover-border);
  color: var(--pixel-overlay-text);
  background: var(--pixel-overlay-control-hover-bg);
}

/* 確認時の注意 */
.pixel-tester .pixel-guide-list {
  margin: 14px 0 0;
  padding-inline-start: 1.4rem;
  color: var(--pixel-muted);
  line-height: 1.8;
}

.pixel-tester .pixel-guide-panel > .pixel-panel-heading {
  margin-block-end: 0;
}

/* プレビューの操作状態と全画面表示 */
.pixel-tester .pixel-test-surface.is-controls-hidden {
  cursor: none;
}

.pixel-tester .pixel-test-surface.is-controls-hidden .pixel-test-overlay {
  pointer-events: none;
  opacity: 0;
}

.pixel-tester .pixel-test-surface:fullscreen {
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  border: 0;
  border-radius: 0;
}

.pixel-tester .pixel-test-surface:fullscreen .pixel-test-overlay {
  inset:
    auto
    max(var(--pixel-overlay-inset), env(safe-area-inset-right))
    max(var(--pixel-overlay-inset), env(safe-area-inset-bottom))
    max(var(--pixel-overlay-inset), env(safe-area-inset-left));
}

/* レスポンシブレイアウト */
@media (max-width: 900px) {
  .pixel-tester .pixel-settings-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pixel-tester .pixel-panel-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .pixel-tester .pixel-panel-actions > button {
    flex: 1;
  }
}

@media (max-width: 600px) {
  body.pixel-tester-page > .pixel-main {
    width: min(
      calc(100% - var(--pixel-page-inline-gutter-mobile)),
      var(--pixel-content-max-width)
    );
    padding: var(--pixel-page-padding-block-mobile) 0;
  }

  .pixel-tester .pixel-panel {
    padding: var(--pixel-panel-padding-mobile);
  }

  .pixel-tester .pixel-settings-grid {
    grid-template-columns: 1fr;
  }

  .pixel-tester .pixel-frame-buttons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pixel-tester .pixel-test-surface {
    min-height: 480px;
  }

  .pixel-tester .pixel-test-overlay {
    inset: auto var(--pixel-overlay-inset-mobile) var(--pixel-overlay-inset-mobile);
    align-items: stretch;
    flex-direction: column;
  }

  .pixel-tester .pixel-test-overlay-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(66px, 1fr));
  }

  .pixel-tester .pixel-test-overlay-actions button {
    padding-inline: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pixel-tester .pixel-test-overlay {
    transition: none;
  }
}