/* モールスシンク 全画面共通のスタイル
   CSPのため、インラインスタイル・<style> は使わない。動的な色は JS から CSSOM で設定する */

*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --color-bg: #111111;
  --color-surface: #1d1d1d;
  --color-border: #3a3a3a;
  --color-text: #f2f2f2;
  --color-muted: #b0b0b0;
  --color-accent: #ffcc00;
  --color-accent-text: #111111;
  --color-error: #ff8a80;
  --color-warning: #ffd180;
  --radius: 12px;
  --tap-size: 44px;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--color-bg);
  color: var(--color-text);
  font-family:
    system-ui,
    -apple-system,
    'Hiragino Sans',
    'Noto Sans JP',
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

[hidden] {
  display: none !important;
}

h1 {
  margin: 0 0 4px;
  font-size: 1.5rem;
}

/* ---- 画面共通 ---- */

.screen {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 16px;
}

.screen__header {
  margin-bottom: 16px;
}

.tagline {
  margin: 0;
  color: var(--color-muted);
}

.warning {
  margin: 8px 0 0;
  color: var(--color-warning);
}

.card {
  margin-bottom: 16px;
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.button {
  min-width: var(--tap-size);
  min-height: var(--tap-size);
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #2a2a2a;
  color: var(--color-text);
  font: inherit;
  cursor: pointer;
}

.button--primary {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-text);
  font-weight: bold;
}

.button:focus-visible,
.link-button:focus-visible,
.join-button:focus-visible,
.field__input:focus-visible,
.field__color:focus-visible {
  outline: 3px solid #80d8ff;
  outline-offset: 2px;
}

.link-button {
  min-height: var(--tap-size);
  padding: 8px 0;
  border: none;
  background: none;
  color: #80d8ff;
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.hint {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.hint--small {
  font-size: 0.875rem;
}

.share-url {
  margin: 8px 0 0;
  font-size: 0.875rem;
  color: var(--color-muted);
  word-break: break-all;
  user-select: all;
  -webkit-user-select: all;
}

/* ---- 作成画面 ---- */

.field {
  margin-bottom: 16px;
}

.field--inline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.field--inline .field__label {
  min-width: 5em;
  margin: 0;
}

.field__label {
  display: block;
  margin-bottom: 4px;
  font-weight: bold;
}

.field__hint {
  margin: 4px 0 0;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.field__input {
  width: 100%;
  min-height: var(--tap-size);
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #000000;
  color: var(--color-text);
  font: inherit;
  font-size: 1.125rem;
}

.field__input[aria-invalid='true'] {
  border-color: var(--color-error);
}

.field__input--number {
  width: 5.5em;
}

/* 作成画面の「オプション」(1拍の長さ) */
.options {
  margin: 16px 0 0;
}

.options summary {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-size);
  padding: 8px 16px 8px 0;
  color: var(--color-muted);
  cursor: pointer;
  list-style: none;
}

.options summary::-webkit-details-marker {
  display: none;
}

.options summary::before {
  content: '▸';
  margin-right: 6px;
}

.options[open] summary::before {
  content: '▾';
}

.options summary:focus-visible {
  outline: 3px solid #80d8ff;
  outline-offset: 2px;
}

.field__color {
  width: var(--tap-size);
  height: var(--tap-size);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: none;
  cursor: pointer;
}

.field__input--hex {
  /* 幅320pxでも「画面の点灯色」のラベル・ピッカーと同じ行に収まる幅 */
  width: 5.25em;
  padding-inline: 8px;
  font-family: ui-monospace, monospace;
}

.highlighted {
  margin: 8px 0 0;
  font-family: ui-monospace, monospace;
  word-break: break-all;
}

.highlighted mark {
  padding: 0 2px;
  border-radius: 4px;
  background: var(--color-error);
  color: #000000;
}

.code-text {
  min-height: 1.6em;
  margin: 8px 0 0;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  word-break: break-word;
}

.cycle {
  margin: 0;
  font-size: 1.125rem;
}

.errors {
  margin: 8px 0 0;
  padding-left: 1.25em;
  color: var(--color-error);
}

.errors:empty {
  display: none;
}

.qr-box {
  width: min(100%, 320px);
  margin: 0 auto;
}

.qr-svg {
  display: block;
  width: 100%;
  height: auto;
}

.share-status {
  min-height: 1.6em;
  margin: 8px 0 0;
}

/* ---- QRコードの全画面表示 ---- */

.qr-overlay {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
  background: #ffffff;
  color: #111111;
}

.qr-overlay__qr {
  width: min(92vw, 78vh);
  max-width: 900px;
}

.qr-overlay__status {
  min-height: 1.6em;
  margin: 8px 0 0;
}

.qr-overlay .share-url {
  max-width: 92vw;
  color: #333333;
}

.qr-overlay .button:not(.button--primary) {
  border-color: #999999;
  background: #eeeeee;
  color: #111111;
}

/* ---- 参加画面 ---- */

.join-before {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* フラッシュのオプション(参加前の画面) */
.flash-option {
  width: 100%;
  margin: 0 0 16px;
}

.flash-toggle::before {
  content: '○ ';
}

.flash-toggle[aria-pressed='true'] {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.flash-toggle[aria-pressed='true']::before {
  content: '● ';
}

.flash-toggle:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.flash-status {
  color: var(--color-warning);
}

.pattern-summary {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  width: 100%;
  margin: 16px 0;
  text-align: left;
}

.pattern-summary dt {
  color: var(--color-muted);
}

.pattern-summary dd {
  margin: 0;
  word-break: break-all;
}

.pattern-summary__message {
  font-size: 1.25rem;
  font-weight: bold;
}

/* PRD: ボタンの高さ・幅は画面の短辺の30%以上 */
.join-button {
  width: max(60vmin, 200px);
  max-width: 100%;
  height: max(36vmin, 120px);
  min-width: 30vmin;
  min-height: 30vmin;
  border: none;
  border-radius: 24px;
  background: var(--color-accent);
  color: var(--color-accent-text);
  font: inherit;
  font-size: clamp(1.5rem, 7vmin, 3rem);
  font-weight: bold;
  cursor: pointer;
}

/* 点滅用の全画面要素。背景色だけを切り替え、レイアウトを変えない */
.stage {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: #000000;
  color: #666666;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.stage__char {
  position: absolute;
  top: max(8px, env(safe-area-inset-top));
  left: 0;
  right: 0;
  margin: 0;
  font-size: 1.25rem;
  font-weight: bold;
  text-align: center;
}

.stage__countdown {
  margin: 0;
  color: #dddddd;
  font-size: clamp(1.5rem, 8vmin, 3rem);
  font-weight: bold;
}

.stage__hint {
  margin: 8px 0 0;
  color: #999999;
  text-align: center;
}

.stage__paused {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: #dddddd;
}

.join-menu {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  padding: 16px 16px max(16px, env(safe-area-inset-bottom));
  background: rgba(0, 0, 0, 0.85);
  cursor: default;
}

/* ---- 読込エラー ---- */

.error-view {
  text-align: center;
}

.error-view__message {
  margin: 24px 0;
  color: var(--color-error);
  font-size: 1.125rem;
}

/* 「QRコードの中身」の小さなウインドウ(作成画面) */
.qr-info-link {
  display: block;
  margin: 8px auto 0;
}

.qr-info {
  width: min(92vw, 560px);
  max-height: 85vh;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
}

.qr-info::backdrop {
  background: rgba(0, 0, 0, 0.7);
}

.qr-info__body {
  padding: 16px;
}

.qr-info__title {
  margin: 0 0 12px;
  font-size: 1.125rem;
}

.qr-info__url {
  margin: 0 0 12px;
  padding: 8px;
  border-radius: 8px;
  background: #000000;
  font-family: ui-monospace, monospace;
  word-break: break-all;
  user-select: all;
}

.qr-info__text {
  margin: 0 0 12px;
  line-height: 1.6;
}

.qr-info__table-wrap {
  overflow-x: auto;
  margin-bottom: 12px;
}

.qr-info__table {
  width: 100%;
  border-collapse: collapse;
  line-height: 1.5;
}

.qr-info__table th,
.qr-info__table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.qr-info__table tbody th,
.qr-info__value {
  font-family: ui-monospace, monospace;
  white-space: nowrap;
}

.qr-info__value {
  /* ffcc00 などの短い値は1行に、長いメッセージは折り返す */
  min-width: 5em;
  max-width: 8em;
  overflow-wrap: anywhere;
  white-space: normal;
}

/* 点滅中のメニューの「開始のずれの補正」の行 */
.timing-adjuster {
  display: flex;
  flex-basis: 100%;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
}

.timing-adjuster__value {
  min-width: 5.5em;
  color: var(--color-text);
  text-align: center;
}

.timing-adjuster .button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}