:root {
  --bg: #f4f6f5;
  --surface: #ffffff;
  --text: #1a2320;
  --text-dim: #64756f;
  --border: #dde5e2;
  --accent: #0f766e;
  --accent-dark: #0b5b55;
  --accent-soft: #d9f2ee;
  --header-bg: #0f766e;
  --extra: #b45309;
  --extra-soft: #fdf1de;
  --danger: #b91c1c;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 40, 34, 0.06), 0 4px 14px rgba(16, 40, 34, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121917;
    --surface: #1b2523;
    --text: #e8efec;
    --text-dim: #9aada7;
    --border: #2c3a37;
    --accent: #2dd4bf;
    --accent-dark: #14b8a6;
    --accent-soft: #113633;
    --header-bg: #0d4f4a;
    --extra: #fbbf24;
    --extra-soft: #3a2c11;
    --danger: #f87171;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 14px rgba(0, 0, 0, 0.25);
  }
}

* {
  box-sizing: border-box;
}

/* display 指定のある要素にも hidden 属性を効かせる */
[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0 0 env(safe-area-inset-bottom);
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 14px 40px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ---------------------------------------------------------------- ヘッダー */

.app-header {
  background: var(--header-bg);
  color: #fff;
  padding: 18px 16px calc(18px + 14px);
  text-align: center;
  margin-bottom: -14px;
}

.app-header h1 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.app-header .subtitle {
  margin: 2px 0 0;
  font-size: 0.82rem;
  opacity: 0.85;
}

.app-footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.75rem;
  padding: 0 16px 24px;
}

.app-footer p {
  margin: 0;
}

/* ---------------------------------------------------------------- カード */

.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}

.card-head h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.note {
  margin: 0 0 10px;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.note.center {
  text-align: center;
  margin: 8px 0 0;
}

.empty-note {
  margin: 10px 0;
  padding: 14px;
  border: 1px dashed var(--border);
  border-radius: 10px;
  color: var(--text-dim);
  font-size: 0.82rem;
  text-align: center;
}

.count-badge {
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 3px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ---------------------------------------------------------------- ボタン */

button {
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
}

.primary-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 16px;
  font-weight: 700;
}

.primary-btn:active {
  background: var(--accent-dark);
}

@media (prefers-color-scheme: dark) {
  .primary-btn {
    color: #06231f; /* 明るいティール地に白文字だと読みにくいため */
  }
}

.primary-btn.small {
  padding: 10px 14px;
  font-size: 0.85rem;
  white-space: nowrap;
}

.primary-btn.generate {
  width: 100%;
  padding: 17px;
  font-size: 1.05rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.primary-btn:disabled {
  background: var(--border);
  color: var(--text-dim);
  cursor: not-allowed;
}

.ghost-btn {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 600;
}

.ghost-btn.small {
  padding: 7px 12px;
  font-size: 0.8rem;
  white-space: nowrap;
}

.ghost-btn.active {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.chip-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-dim);
  padding: 5px 12px;
  font-size: 0.78rem;
}

.quick-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

/* ---------------------------------------------------------------- メンバータイル */

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 8px;
}

.tile {
  position: relative;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 13px 6px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-height: 52px;
}

.tile.on {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-dark);
}

.tile.on::after {
  content: '✓';
  position: absolute;
  top: 2px;
  right: 6px;
  font-size: 0.72rem;
  color: var(--accent);
}

.tile .guest-mark {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--extra);
  letter-spacing: 0.06em;
}

/* 編集モード */

.edit-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.edit-row input {
  flex: 1;
  min-width: 0;
}

.edit-row .tag {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--extra);
  background: var(--extra-soft);
  padding: 3px 6px;
  border-radius: 6px;
  white-space: nowrap;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--danger);
  padding: 8px 11px;
  font-size: 0.8rem;
  white-space: nowrap;
}

.icon-btn.neutral {
  color: var(--accent);
}

.icon-btn.danger-solid {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
  font-weight: 700;
}

.edit-row.confirming input {
  opacity: 0.6;
}

/* ---------------------------------------------------------------- 入力欄 */

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

input[type='text'] {
  flex: 1;
  min-width: 0;
  font-family: inherit;
  font-size: 16px; /* iOS の自動ズーム防止 */
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
}

input[type='text']:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.guest-box {
  margin-top: 14px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.guest-box summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
}

.guest-box .note {
  margin: 8px 0 0;
}

/* ---------------------------------------------------------------- 参加者チップ */

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  border-radius: 999px;
  padding: 6px 6px 6px 13px;
  font-size: 0.88rem;
  font-weight: 600;
}

.chip .guest-mark {
  font-size: 0.62rem;
  color: var(--extra);
  font-weight: 700;
}

.chip button {
  border: none;
  background: rgba(0, 0, 0, 0.07);
  color: inherit;
  border-radius: 999px;
  width: 24px;
  height: 24px;
  line-height: 1;
  font-size: 0.85rem;
  display: grid;
  place-items: center;
  padding: 0;
}

@media (prefers-color-scheme: dark) {
  .chip button {
    background: rgba(255, 255, 255, 0.12);
  }
}

/* ---------------------------------------------------------------- 結果 */

.generate-wrap {
  margin-top: 2px;
}

.result-head {
  padding: 0 4px;
  margin-top: 8px;
}

.round {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
  margin-bottom: 12px;
}

.round-title {
  margin: 0 0 10px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

@media (prefers-color-scheme: dark) {
  .round-title {
    color: var(--accent);
  }
}

.round-title::before {
  content: '';
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--accent);
}

.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

@media (min-width: 560px) {
  .team-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.team {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 11px;
}

.team.extra {
  border-color: var(--extra);
  background: var(--extra-soft);
}

.team-name {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 5px;
}

.team.extra .team-name {
  color: var(--extra);
}

.badge {
  font-size: 0.62rem;
  font-weight: 700;
  background: var(--extra);
  color: #fff;
  padding: 2px 6px;
  border-radius: 5px;
  letter-spacing: 0.04em;
}

@media (prefers-color-scheme: dark) {
  .badge {
    color: #241a05;
  }
}

.team-members {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  font-size: 1.02rem;
  font-weight: 600;
}

.member {
  white-space: nowrap;
}

.member.helper {
  color: var(--extra);
}

.member.helper::after {
  content: '（助っ人）';
  font-size: 0.68rem;
  font-weight: 700;
}

/* ---------------------------------------------------------------- 共有状態 */

/* ヘッダー内に置くので、濃い地色の上で読める配色にする */
.sync-bar {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  padding: 4px 4px 4px 12px;
}

.sync-state {
  font-size: 0.72rem;
  font-weight: 600;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sync-state::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #6ee7b7;
}

.sync-state.warn::before {
  background: #fcd34d;
}

.sync-refresh {
  background: rgba(255, 255, 255, 0.9);
  color: var(--header-bg);
  border: none;
  border-radius: 999px;
  padding: 4px 11px;
  font-size: 0.72rem;
  font-weight: 700;
}

/* ---------------------------------------------------------------- 試合数の一覧 */

.counts {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
}

.counts:empty {
  display: none;
}

.counts-head {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.counts-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.count-item {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
}

.count-item.most {
  color: var(--extra);
  border-color: var(--extra);
  background: var(--extra-soft);
}

/* ---------------------------------------------------------------- トースト */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: rgba(20, 30, 27, 0.92);
  color: #fff;
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 20;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}