:root {
  --bg: #0e1320;
  --panel: #161d30;
  --panel-2: #1c2540;
  --text: #eef1f8;
  --muted: #8791a8;
  --accent: #f4b93a;
  --accent-ink: #241a02;
  --ball-bg: #1c2440;
  --ball-border: #2c3760;
  --success: #34c777;
  --success-bg: #103322;
  --danger: #ef5757;
  --danger-bg: #3a1414;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
  -webkit-tap-highlight-color: transparent;
}

.app {
  max-width: 440px;
  margin: 0 auto;
  min-height: 100vh;
  padding: calc(28px + env(safe-area-inset-top)) calc(18px + env(safe-area-inset-right))
           calc(40px + env(safe-area-inset-bottom)) calc(18px + env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
}

.app-header {
  text-align: center;
  margin-bottom: 22px;
}

.app-header h1 {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--accent);
}

.app-header h1 span {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: .08em;
  margin-top: 2px;
}

.app-header .sub {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

/* キープ中の番号 */
.kept-wrap {
  margin-bottom: 18px;
}

.kept-wrap[hidden] { display: none; }

.kept-label {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

.kept-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.kept-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--panel-2);
  border: 1px solid var(--ball-border);
  border-radius: 20px;
  padding: 6px 8px 6px 12px;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  cursor: pointer;
}

.kept-chip:active { transform: scale(.97); }

.kept-chip .kept-x {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,.08);
  color: var(--muted);
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
}

/* 選択スロット表示 */
.slots {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  max-width: 320px;
  margin: 0 auto 22px;
}

.slot {
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px dashed var(--ball-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  color: var(--muted);
  transition: all .15s ease;
}

.slot.filled {
  border-style: solid;
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

/* 数字ボタングリッド */
.ball-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-bottom: 24px;
}

@media (max-width: 380px) {
  .ball-grid { grid-template-columns: repeat(5, 1fr); gap: 8px; }
}

.ball {
  aspect-ratio: 1;
  border-radius: 50%;
  border: none;
  background: var(--ball-bg);
  border: 1px solid var(--ball-border);
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  transition: transform .12s ease, background .15s ease, color .15s ease, box-shadow .15s ease, opacity .15s ease;
  -webkit-user-select: none;
  user-select: none;
}

.ball:active {
  transform: scale(.92);
}

.ball.selected {
  background: linear-gradient(155deg, #ffd166, var(--accent));
  color: var(--accent-ink);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(244,185,58,.18);
}

.ball-grid.locked .ball {
  cursor: not-allowed;
}

.ball-grid.locked .ball:not(.selected) {
  opacity: .3;
}

.ball-grid.locked .ball:active {
  transform: none;
}

/* アクションボタン */
.actions {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.btn {
  flex: 1;
  padding: 14px 12px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: opacity .15s ease, transform .1s ease;
}

.btn:active { transform: scale(.98); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--ball-border);
  color: var(--muted);
  flex: 0 0 auto;
  min-width: 96px;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:disabled {
  opacity: .35;
  cursor: not-allowed;
}

/* 結果パネル */
.result {
  border-radius: var(--radius);
  padding: 20px 18px;
  margin-bottom: 20px;
  text-align: center;
}

.result[hidden] { display: none; }

.result.ok {
  background: var(--success-bg);
  border: 1px solid rgba(52,199,119,.35);
}

.result.ng {
  background: var(--danger-bg);
  border: 1px solid rgba(239,87,87,.35);
}

.result-badge {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: .04em;
  margin-bottom: 6px;
}

.result.ok .result-badge { color: var(--success); }
.result.ng .result-badge { color: var(--danger); }

.result-desc {
  font-size: 13px;
  color: var(--text);
  margin: 0 0 4px;
}

.result-hits {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 13px;
  color: var(--muted);
  text-align: left;
}

.result-hits ul {
  margin: 6px 0 0;
  padding-left: 18px;
}

.result-hits li {
  margin: 3px 0;
  color: var(--text);
}

.keep-btn {
  margin-top: 14px;
  padding: 10px 18px;
  border-radius: 20px;
  border: 1px solid var(--ball-border);
  background: transparent;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.keep-btn:active { transform: scale(.97); }

.keep-btn.kept {
  border-color: var(--accent);
  color: var(--accent);
}

/* フッター */
.app-footer {
  margin-top: auto;
  padding-top: 14px;
  text-align: center;
}

.data-info {
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 10px;
}

.disclaimer {
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
  opacity: .75;
  margin: 0;
}