: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;
  --warn: #f2c14e;
  --warn-bg: #362a0c;
  --danger: #ef5757;
  --danger-bg: #3a1414;
  --radius: 16px;
  --font-ui: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
  --font-display: var(--font-ui);
  --font-mono: var(--font-ui);
  --ball-radius: 50%;
  --body-bg-image: none;
}

html[data-theme="light"] {
  --bg: #f4f5fa;
  --panel: #ffffff;
  --panel-2: #eef0f7;
  --text: #1b2033;
  --muted: #6b7280;
  --ball-bg: #f1f2f8;
  --ball-border: #dde1ec;
  --success: #1f9d55;
  --success-bg: #e5f7ec;
  --warn: #b2790a;
  --warn-bg: #fbf1d7;
  --danger: #d64545;
  --danger-bg: #fceaea;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  -webkit-tap-highlight-color: transparent;
  transition: background .2s ease, color .2s ease;
}

body {
  background-image: var(--body-bg-image);
  background-attachment: fixed;
  background-size: cover;
}

.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 {
  position: relative;
  text-align: center;
  margin-bottom: 22px;
}

.theme-picker {
  position: absolute;
  top: 0;
  right: 0;
}

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--ball-border);
  background: var(--panel-2);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:active { transform: scale(.92); }

.theme-menu {
  position: absolute;
  top: 42px;
  right: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--panel);
  border: 1px solid var(--ball-border);
  border-radius: 12px;
  padding: 6px;
  box-shadow: 0 12px 30px rgba(0,0,0,.25);
  min-width: 150px;
}

.theme-menu[hidden] { display: none; }

.theme-opt {
  text-align: left;
  padding: 9px 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}

.theme-opt:active,
.theme-opt:hover {
  background: var(--panel-2);
}

/* デッド数字バナー */
.dead-banner {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--danger-bg);
  border: 1px solid var(--danger);
  color: var(--text);
  font-size: 12.5px;
  line-height: 1.6;
  text-align: center;
}

.dead-banner[hidden] { display: none; }

.dead-banner strong { color: var(--danger); font-size: 14px; }

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

.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: var(--ball-radius);
  border: 2px dashed var(--ball-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  font-family: var(--font-mono);
  color: var(--muted);
  transition: all .15s ease;
}

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

/* ランダム選択ボタン */
.btn-random {
  display: block;
  width: 100%;
  margin-bottom: 16px;
  padding: 12px;
  border-radius: 12px;
  border: 1px dashed var(--ball-border);
  background: transparent;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

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

/* 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 {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--ball-radius);
  border: none;
  background: var(--ball-bg);
  border: 1px solid var(--ball-border);
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-mono);
  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.dead {
  opacity: .25;
  text-decoration: line-through;
  cursor: not-allowed;
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger);
}

.ball:disabled { pointer-events: 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;
  justify-content: center;
  margin-bottom: 20px;
}

.btn {
  padding: 14px 32px;
  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);
}

/* 結果パネル（診断カード一覧） */
.result {
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 20px;
  background: var(--panel);
  border: 1px solid var(--ball-border);
  text-align: center;
}

.result[hidden] { display: none; }

.diag-summary {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.diag-item {
  text-align: left;
  padding: 12px 14px;
  border-radius: 12px;
  border-left: 4px solid var(--ball-border);
  background: rgba(255,255,255,.02);
  margin-bottom: 10px;
}

.diag-item:last-of-type { margin-bottom: 0; }

.diag-item.ok { border-left-color: var(--success); background: var(--success-bg); }
.diag-item.warn { border-left-color: var(--warn); background: var(--warn-bg); }
.diag-item.bad { border-left-color: var(--danger); background: var(--danger-bg); }

.diag-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.diag-mark {
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
  font-family: var(--font-display);
}

.diag-item.ok .diag-mark { color: var(--success); }
.diag-item.warn .diag-mark { color: var(--warn); }
.diag-item.bad .diag-mark { color: var(--danger); }

.diag-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.diag-desc {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.diag-hits {
  margin: 6px 0 0;
  padding-left: 18px;
  font-size: 12.5px;
  color: var(--text);
}

.diag-hits li { margin: 2px 0; }

.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;
}

/* ============================================================
   追加テーマ: 紙のロト券
   ============================================================ */
html[data-theme="paper"] {
  --bg: #e7dcc2;
  --panel: #f7f1de;
  --panel-2: #efe6cc;
  --text: #2b2114;
  --muted: #6b5c43;
  --accent: #b3392c;
  --accent-ink: #f7f1de;
  --ball-bg: #ffffff;
  --ball-border: #d8c9a3;
  --success: #3a6b3f;
  --success-bg: #e3ead9;
  --warn: #a9761f;
  --warn-bg: #f2e6c9;
  --danger: #b3392c;
  --danger-bg: #f3ddd7;
  --font-ui: "Courier Prime", monospace;
  --font-display: "Shippori Mincho", serif;
  --font-mono: "DotGothic16", monospace;
  --ball-radius: 4px;
  --body-bg-image: radial-gradient(circle at 20% 0%, rgba(255,255,255,.35), transparent 45%);
}
html[data-theme="paper"] .app { background: var(--panel); box-shadow: 0 18px 40px rgba(43,33,20,.18); }
html[data-theme="paper"] .slot { border-radius: var(--ball-radius); }
html[data-theme="paper"] .slot.filled { background: transparent; border-color: var(--accent); color: var(--accent); }
html[data-theme="paper"] .ball.selected {
  background: #fff;
  color: var(--accent);
  border: 1px solid var(--ball-border);
  box-shadow: none;
  font-weight: 700;
}
html[data-theme="paper"] .ball.selected::after {
  content: "";
  position: absolute;
  inset: -3px;
  border: 2.5px solid var(--accent);
  border-radius: 50%;
  transform: rotate(-8deg);
  opacity: .85;
}
html[data-theme="paper"] .btn-random { border-style: dashed; }
html[data-theme="paper"] .keep-btn.kept { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

/* ============================================================
   追加テーマ: 縁起物・おみくじ
   ============================================================ */
html[data-theme="omikuji"] {
  --bg: #7d1c1f;
  --panel: #f6ecd7;
  --panel-2: #efe1c0;
  --text: #2a1c14;
  --muted: #7a6650;
  --accent: #cda449;
  --accent-ink: #2a1c14;
  --ball-bg: #fffaf0;
  --ball-border: #cda449;
  --success: #a3272a;
  --success-bg: #f3e0c8;
  --warn: #9c7a1f;
  --warn-bg: #f3e9c8;
  --danger: #555555;
  --danger-bg: #e7e2d8;
  --font-ui: "Zen Kaku Gothic New", sans-serif;
  --font-display: "Shippori Mincho", serif;
  --font-mono: "Shippori Mincho", serif;
  --ball-radius: 50%;
  --body-bg-image: radial-gradient(circle at 50% -10%, rgba(233,200,116,.25), transparent 55%),
                   linear-gradient(180deg, #a3272a 0%, #7d1c1f 100%);
}
html[data-theme="omikuji"] .app {
  background: var(--panel);
  border: 1px solid var(--accent);
  outline: 6px solid #7d1c1f;
  outline-offset: -14px;
}
html[data-theme="omikuji"] .ball { background: radial-gradient(circle at 32% 28%, #fffaf0, #ece0c4 70%); }
html[data-theme="omikuji"] .ball.selected {
  background: radial-gradient(circle at 32% 28%, #e9c874, var(--accent) 75%);
  color: #7d1c1f;
  box-shadow: 0 0 0 3px rgba(163,39,42,.18);
}
html[data-theme="omikuji"] .keep-btn.kept { background: #a3272a; color: #e9c874; border-color: #a3272a; }
html[data-theme="omikuji"] .diag-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 4px;
  border-radius: 6px;
  border: 2px solid currentColor;
  transform: rotate(-4deg);
  font-size: 12px;
}

/* ============================================================
   追加テーマ: レトロアーケード
   ============================================================ */
html[data-theme="arcade"] {
  --bg: #0a0a14;
  --panel: #12101f;
  --panel-2: #1a1830;
  --text: #ecefff;
  --muted: #7b7fa8;
  --accent: #29f4e0;
  --accent-ink: #062622;
  --ball-bg: #14132a;
  --ball-border: #33305a;
  --success: #35ffb0;
  --success-bg: #0d0c1a;
  --warn: #ffcc33;
  --warn-bg: #0d0c1a;
  --danger: #ff3d5a;
  --danger-bg: #0d0c1a;
  --font-ui: "DotGothic16", monospace;
  --font-display: "Press Start 2P", monospace;
  --font-mono: "DotGothic16", monospace;
  --ball-radius: 50%;
  --body-bg-image: radial-gradient(ellipse at 50% 0%, rgba(255,61,154,.14), transparent 60%),
                   radial-gradient(ellipse at 50% 100%, rgba(41,244,224,.10), transparent 60%);
}
html[data-theme="arcade"] .app {
  background: var(--panel);
  border: 2px solid #2a2748;
  box-shadow: 0 0 40px rgba(255,61,154,.15);
}
html[data-theme="arcade"] .app-header h1 {
  font-size: 18px;
  text-shadow: 0 0 6px var(--accent), 0 0 16px rgba(41,244,224,.5), 2px 2px 0 #ff3d9a;
}
html[data-theme="arcade"] .ball.selected {
  background: #ff3d9a;
  color: #1a0410;
  border-color: #ff3d9a;
  box-shadow: 0 0 12px #ff3d9a, 0 0 24px rgba(255,61,154,.6);
}
html[data-theme="arcade"] .slot.filled { text-shadow: 0 0 8px var(--accent); }
html[data-theme="arcade"] .diag-item { background: #0d0c1a; border-left-width: 4px; }
html[data-theme="arcade"] .diag-item.ok .diag-mark,
html[data-theme="arcade"] .diag-item.warn .diag-mark,
html[data-theme="arcade"] .diag-item.bad .diag-mark { text-shadow: 0 0 6px currentColor; }
html[data-theme="arcade"] .diag-item.bad .diag-mark { animation: arcadeGlitch 1.4s infinite; }
@keyframes arcadeGlitch {
  0%, 90%, 100% { transform: translate(0); }
  92% { transform: translate(-1px, 1px); }
  94% { transform: translate(1px, -1px); }
  96% { transform: translate(-1px, 0); }
}

/* ============================================================
   追加テーマ: エディトリアル・ミニマル
   ============================================================ */
html[data-theme="editorial"] {
  --bg: #f6f4ee;
  --panel: #f6f4ee;
  --panel-2: #eeece4;
  --text: #131313;
  --muted: #6f6f68;
  --accent: #131313;
  --accent-ink: #f6f4ee;
  --ball-bg: #f6f4ee;
  --ball-border: #131313;
  --success: #131313;
  --success-bg: #f6f4ee;
  --warn: #131313;
  --warn-bg: #f6f4ee;
  --danger: #c81e3a;
  --danger-bg: #fdeef1;
  --font-ui: "Zen Kaku Gothic New", sans-serif;
  --font-display: "Zen Antique", serif;
  --font-mono: "Zen Kaku Gothic New", sans-serif;
  --ball-radius: 0px;
}
html[data-theme="editorial"] .slot { border-radius: 0; }
html[data-theme="editorial"] .diag-item {
  background: transparent;
  border-left: none;
  border-bottom: 1px solid #ddd9cd;
  border-radius: 0;
  padding: 12px 2px;
}
html[data-theme="editorial"] .diag-mark { font-size: 22px; }
html[data-theme="editorial"] .diag-item.bad .diag-mark,
html[data-theme="editorial"] .diag-item.bad .diag-desc { color: var(--danger); }
html[data-theme="editorial"] .btn,
html[data-theme="editorial"] .btn-random,
html[data-theme="editorial"] .keep-btn,
html[data-theme="editorial"] .kept-chip,
html[data-theme="editorial"] .theme-menu,
html[data-theme="editorial"] .dead-banner,
html[data-theme="editorial"] .result { border-radius: 0; }
html[data-theme="editorial"] .result { border: none; border-top: 1px solid var(--text); background: transparent; }
html[data-theme="editorial"] .ball.selected { box-shadow: none; }