/* ==========================================
   ゲーム共通スタイル
   各ゲームの index.html から ../assets/css/game-base.css で読み込む
   ========================================== */

/* ==========================================
   Tokens
   ========================================== */
:root {
  color-scheme: dark;

  --color-bg: #050816;
  --color-bg-glow: #0b1220;
  --color-surface: #0b1220;
  --color-surface-raised: #111a2e;
  --color-border: rgba(255, 255, 255, .10);
  --color-border-strong: rgba(255, 255, 255, .24);
  --color-text: #e5e7eb;
  --color-muted: #9ca3af;
  --color-accent: #06b6d4;
  --color-accent-light: #22d3ee;
  --color-on-accent: #032830;
  --color-focus: rgba(34, 211, 238, .75);

  --font-base: system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  --tap: 44px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-panel: 0 10px 30px rgba(0, 0, 0, .35), inset 0 1px 0 rgba(255, 255, 255, .05);
}

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

html, body { margin: 0; }

body {
  min-height: 100svh;
  font-family: var(--font-base);
  color: var(--color-text);
  background:
    radial-gradient(1200px 800px at 70% -10%, var(--color-bg-glow), transparent 60%),
    var(--color-bg);
  -webkit-tap-highlight-color: transparent;
  /* ゲーム画面は連打や長押しで文字が選択されないようにする（iPhone の長押しメニューも出さない） */
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible,
.is-gamepad :focus { /* ゲームパッドで選んだボタンにも枠を出す（game-pad.js） */
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap);
  padding: 0 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  transition: transform .08s ease, background-color .2s ease, border-color .2s ease, opacity .2s ease;
}
.btn:hover { border-color: var(--color-border-strong); background: var(--color-surface-raised); }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }

.btn--primary {
  border: none;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: var(--color-on-accent);
}
.btn--primary:hover { background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light)); filter: brightness(1.08); }

.icon-btn {
  appearance: none;
  display: inline-grid;
  place-items: center;
  width: var(--tap);
  height: var(--tap);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-muted);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease, transform .08s ease;
}
.icon-btn:hover { border-color: var(--color-border-strong); color: var(--color-text); }
.icon-btn:active { transform: scale(.94); }
.icon-btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

a.icon-btn { text-decoration: none; }

/* ヘッダー左：ゲーム一覧へのリンクとタイトル */
.app-header__lead {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}
.app-header__lead .home-link { flex: none; }
.app-header__lead .app-header__title {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ON/OFF を切り替えるアイコンボタン（aria-pressed で見た目を切り替える） */
.icon-btn[aria-pressed="true"] { color: var(--color-accent-light); border-color: rgba(34, 211, 238, .45); }
.icon-btn .icon-btn__off { display: none; }
.icon-btn[aria-pressed="false"] .icon-btn__on { display: none; }
.icon-btn[aria-pressed="false"] .icon-btn__off { display: inline; }

/* ==========================================
   Dialog
   ========================================== */
.dialog {
  width: min(100% - 32px, 380px);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .55);
}
.dialog::backdrop { background: rgba(2, 6, 23, .6); backdrop-filter: blur(3px); }
.dialog__body { display: grid; gap: 18px; padding: 20px; }
.dialog__title { margin: 0; font-size: 18px; }
.dialog__note { margin: 0; font-size: 13px; line-height: 1.6; color: var(--color-muted); }

.field { display: grid; gap: 8px; }
.field__label { font-weight: 700; }
.field input[type="range"] { width: 100%; min-height: var(--tap); accent-color: var(--color-accent); }

.check { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; align-items: center; cursor: pointer; }
.check input { width: 22px; height: 22px; margin: 0; accent-color: var(--color-accent); }
.check__label { font-weight: 700; }
.check__desc { grid-column: 2; font-size: 13px; color: var(--color-muted); }

/* ==========================================
   Effects（game-fx.js が付与するクラス）
   ========================================== */
.fx-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, .45);
  transform: scale(0);
  pointer-events: none;
  animation: fx-ripple .5s ease-out forwards;
}
@keyframes fx-ripple {
  to { transform: scale(1); opacity: 0; }
}

.fx-shake { animation: fx-shake .32s ease; }
@keyframes fx-shake {
  0%, 100% { translate: 0 0; }
  20% { translate: -6px 0; }
  40% { translate: 5px 0; }
  60% { translate: -3px 0; }
  80% { translate: 2px 0; }
}

.fx-confetti {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 100;
}

/* 「演出を減らす」が ON のとき */
.fx-reduced .fx-ripple { display: none; }
.fx-reduced .fx-shake { animation: none; }
.fx-reduced .dialog::backdrop { backdrop-filter: none; }

/* ==========================================
   ゲームパッドの案内（game-pad.js）
   ========================================== */
.pad-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 150;
  max-width: calc(100% - 32px);
  margin: 0;
  padding: 10px 16px;
  font-size: 14px;
  line-height: 1.5;
  color: #fff;
  background: rgba(15, 23, 42, .92);
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 10px;
  translate: -50% 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, translate .2s;
}
.pad-toast.is-visible { opacity: 1; translate: -50% 0; }

/* ゲームパッドをつないでいる間だけ見せる */
.pad-only { display: none; }
.has-gamepad .pad-only { display: block; }