/* Brain Master · 通用组件：卡片 / 按钮 / HUD / 弹窗 / Toast */
.card {
  position: relative;
  border-radius: var(--r-lg);
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 16px;
  transition: transform .18s cubic-bezier(.22,1,.36,1), box-shadow .18s, border-color .18s, background .18s;
}
.card:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: var(--shadow-1); }

/* 游戏卡片 */
.gcard {
  /* 必须 relative：::before 的发光层以本卡片为定位上下文，
     否则会撑满整个 #app，既糊成一层雾，又会吃掉其它卡片的点击 */
  position: relative;
  isolation: isolate;
  display: flex; flex-direction: column; gap: 10px;
  padding: 18px;
  cursor: pointer;
  overflow: hidden;
  text-align: left;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  transition: transform .18s cubic-bezier(.22,1,.36,1), border-color .18s, box-shadow .18s;
}
.gcard::before {
  content: "";
  position: absolute; inset: 0;
  z-index: -1;
  pointer-events: none;
  background: var(--glow, var(--grad-hero));
  opacity: .16;
  transition: opacity .2s;
}
.gcard:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: var(--shadow-1); }
.gcard:hover::before { opacity: .3; }
.gcard__top { display: flex; align-items: center; gap: 12px; }
.gcard__icon {
  width: 48px; height: 48px; flex: none;
  border-radius: 15px;
  display: grid; place-items: center;
  font-size: 25px;
  background: var(--glow, var(--grad-hero));
  box-shadow: 0 6px 16px rgba(0, 0, 0, .35);
}
.gcard__name { font-size: 16px; font-weight: 800; }
.gcard__cat { font-size: 11px; color: var(--ink-3); margin-top: 2px; letter-spacing: .5px; }
.gcard__desc { font-size: 12.5px; color: var(--ink-2); line-height: 1.55; min-height: 38px; }
.gcard__foot { display: flex; align-items: center; justify-content: space-between; font-size: 11.5px; color: var(--ink-3); }
.gcard__best { color: var(--c-amber); font-weight: 700; }
.gcard__tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  font-size: 10.5px; padding: 3px 8px; border-radius: 99px;
  background: rgba(132, 166, 255, .16); color: var(--ink-2);
}

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px;
  border-radius: 99px;
  font-size: 15px; font-weight: 700;
  background: var(--panel-2);
  border: 1px solid var(--border);
  transition: transform .15s, filter .15s, background .15s;
}
.btn:hover { background: var(--panel-2); filter: brightness(1.12); }
.btn:active { transform: scale(.96); }
.btn--primary {
  background: var(--grad-hero);
  color: #06131f;
  border-color: transparent;
  box-shadow: 0 10px 26px rgba(91, 140, 255, .35);
}
.btn--primary:hover { filter: brightness(1.08); }
.btn--pop { background: var(--grad-pop); color: #2a0a1a; border-color: transparent; box-shadow: 0 10px 26px rgba(255, 107, 157, .3); }
.btn--ghost { background: transparent; }
.btn--sm { padding: 8px 14px; font-size: 13px; }
.btn--block { width: 100%; }
.btn:disabled { opacity: .45; pointer-events: none; }

/* 分段控件 */
.seg { display: inline-flex; gap: 4px; padding: 4px; border-radius: 99px; background: rgba(0,0,0,.28); border: 1px solid var(--border); }
.seg__item {
  padding: 7px 15px; border-radius: 99px; font-size: 13px; color: var(--ink-2);
  transition: background .15s, color .15s;
}
.seg__item.is-on { background: var(--panel-2); color: var(--ink); font-weight: 700; box-shadow: var(--shadow-1); }

/* 主题胶囊 */
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 15px; border-radius: 99px;
  background: var(--panel); border: 1px solid var(--border);
  font-size: 13.5px; white-space: nowrap;
  transition: background .15s, border-color .15s, transform .15s;
}
.chip:hover { background: var(--panel-2); }
.chip.is-on { border-color: var(--c-cyan); background: rgba(110, 231, 255, .14); color: #fff; font-weight: 700; }
.chip__dot { width: 9px; height: 9px; border-radius: 50%; }

/* 游戏内的"控件组"：难度 + 主题 + 按钮都塞在同一行里 */
.ctrl-group {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding: 4px 12px 4px 10px;
  border-radius: 99px;
  background: var(--panel);
  border: 1px solid var(--border);
}
.ctrl-group__k { font-size: 12px; color: var(--ink-3); white-space: nowrap; flex: none; }
.ctrl-group--theme { max-width: 100%; overflow: hidden; }
.chip--theme { padding: 5px 11px; font-size: 12.5px; white-space: nowrap; }
.ctrl-group--theme .themes { gap: 6px; padding-bottom: 0; }

/* 主题下拉：手机窄屏用，桌面隐藏 */
.theme-select {
  display: none;
  font-size: 13px;
  color: var(--ink);
  background: var(--panel-2);
  border: 1px solid var(--border-strong);
  border-radius: 99px;
  padding: 6px 12px;
  max-width: 52vw;
}
.theme-select:focus { outline: none; border-color: var(--c-cyan); }

@media (max-width: 640px) {
  .ctrl-group--theme .themes { display: none; }
  .theme-select { display: inline-block; }
  /* 手机上控件按钮只显示图标，避免一行被挤爆 */
  .ctl-label { display: none; }
  .btn .ctl-ico + .ctl-label { margin: 0; }
}

/* HUD */
.hud {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  flex-wrap: wrap;
  padding: 10px 14px;
  border-radius: var(--r-md);
  background: rgba(8, 12, 28, .6);
  border: 1px solid var(--border);
  min-height: 52px;
}
.hud__slot { display: flex; flex-direction: column; align-items: center; min-width: 74px; }
.hud__k { font-size: 11px; color: var(--ink-3); letter-spacing: .5px; }
.hud__v { font-size: 19px; font-weight: 800; font-family: var(--font-num); font-variant-numeric: tabular-nums; }
.hud__v--warn { color: var(--c-red); }
.hud__sep { width: 1px; height: 28px; background: var(--border); }

/* 弹窗 */
.overlay {
  position: fixed; inset: 0; z-index: 90;
  display: grid; place-items: center;
  padding: 20px;
  background: rgba(4, 6, 16, .72);
  backdrop-filter: blur(8px);
  animation: fade .18s ease;
}
@keyframes fade { from { opacity: 0 } to { opacity: 1 } }
.modal {
  width: min(460px, 100%);
  border-radius: var(--r-xl);
  padding: 28px 26px 22px;
  background: linear-gradient(160deg, #16204a, #0d1330 70%);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-2);
  text-align: center;
  animation: pop .28s cubic-bezier(.2,1.3,.4,1);
}
@keyframes pop { from { transform: scale(.86) translateY(14px); opacity: 0 } to { transform: none; opacity: 1 } }
.modal__emoji { font-size: 46px; }
.modal__title { font-size: 22px; font-weight: 900; margin-top: 6px; }
.modal__sub { font-size: 13px; color: var(--ink-2); margin-top: 6px; line-height: 1.6; }
.modal__score {
  margin: 16px 0 6px;
  font-size: 46px; font-weight: 900;
  background: var(--grad-pop); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.modal__stars { font-size: 26px; letter-spacing: 4px; }
.modal__stars .off { opacity: .22; }
.modal__stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 10px; margin: 18px 0 4px;
}
.modal__stat { background: rgba(0, 0, 0, .26); border-radius: var(--r-sm); padding: 10px 6px; }
.modal__stat b { display: block; font-size: 17px; font-family: var(--font-num); word-break: break-word; }
.modal__stat span { font-size: 11px; color: var(--ink-3); }
.modal__newbest { color: var(--c-amber); font-size: 13px; font-weight: 800; margin-top: 8px; }
.modal__hint { margin-top: 14px; font-size: 11.5px; color: var(--ink-3); }

/* 收起成绩后留在角落的"再看一眼"入口 */
.result-peek {
  position: fixed;
  right: calc(16px + var(--safe-b));
  bottom: calc(20px + var(--safe-b));
  z-index: 110;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 16px; border-radius: 99px;
  font-size: 13px; font-weight: 700;
  background: var(--grad-hero); color: #06131f;
  border: none;
  box-shadow: 0 10px 26px rgba(91, 140, 255, .4);
  animation: popIn .28s cubic-bezier(.2, 1.3, .4, 1);
}
.modal__actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; justify-content: center; }

/* Toast */
.toast-wrap {
  position: fixed; left: 50%; bottom: calc(28px + var(--safe-b)); transform: translateX(-50%);
  z-index: 120; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none;
}
.toast {
  padding: 10px 18px; border-radius: 99px;
  background: rgba(12, 18, 40, .94);
  border: 1px solid var(--border-strong);
  font-size: 13.5px; box-shadow: var(--shadow-1);
  animation: toastIn .2s ease;
}
@keyframes toastIn { from { transform: translateY(12px); opacity: 0 } to { transform: none; opacity: 1 } }

/* 通用小部件 */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 99px; font-size: 12.5px;
  background: var(--panel); border: 1px solid var(--border); color: var(--ink-2);
}

/* ---------- 设置面板 ---------- */
.settings__hint { font-size: 12.5px; color: var(--ink-2); text-align: left; margin: 0 0 14px; line-height: 1.6; }
.settings__games {
  display: flex; flex-direction: column; gap: 8px;
  text-align: left; max-height: 46vh; overflow: auto; margin-bottom: 16px;
  padding-right: 4px;
}
.settings__game {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--r-md);
  background: rgba(8, 12, 28, .5); border: 1px solid var(--border);
  font-size: 14px; cursor: pointer; transition: border-color .15s, background .15s;
}
.settings__game:hover { border-color: var(--border-strong); }
.settings__cb { width: 18px; height: 18px; flex: none; accent-color: var(--c-cyan); cursor: pointer; }
.settings__emoji { font-size: 19px; }
.settings__data-title { font-size: 13px; font-weight: 800; text-align: left; margin: 2px 0 8px; }
.settings__data { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 10px; }
.settings__ver { margin-top: 14px; font-size: 11.5px; color: var(--ink-3); }
.board-wrap {
  display: grid; place-items: center;
  width: 100%;
  padding: 10px;
}
.divider { height: 1px; background: var(--border); width: 100%; }
.shake { animation: shake .32s; }
@keyframes shake {
  0%, 100% { transform: translateX(0) }
  20% { transform: translateX(-7px) }
  40% { transform: translateX(7px) }
  60% { transform: translateX(-4px) }
  80% { transform: translateX(4px) }
}
.pop-in { animation: popIn .3s cubic-bezier(.2,1.3,.4,1); }
@keyframes popIn { from { transform: scale(.7); opacity: 0 } to { transform: none; opacity: 1 } }

/* ---------- 开屏 Logo ---------- */
.splash {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center; align-content: center; gap: 16px;
  cursor: pointer;
  background:
    radial-gradient(circle at 50% 44%, rgba(110, 231, 255, .18), transparent 58%),
    radial-gradient(circle at 82% 18%, rgba(180, 107, 255, .16), transparent 55%),
    linear-gradient(180deg, #05091a, #080f26);
  overflow: hidden;
  animation: splashIn .28s ease;
}
.splash.is-out { animation: splashOut .5s ease forwards; }
@keyframes splashIn { from { opacity: 0 } to { opacity: 1 } }
@keyframes splashOut { to { opacity: 0; transform: scale(1.08); filter: blur(8px); } }

.splash__logo {
  position: relative;
  width: clamp(130px, 32vw, 180px); aspect-ratio: 1;
  display: grid; place-items: center;
  animation: logoPop .8s cubic-bezier(.2, 1.4, .4, 1) both;
}
@keyframes logoPop {
  0% { transform: scale(.3) rotate(-30deg); opacity: 0; }
  55% { transform: scale(1.14) rotate(6deg); opacity: 1; }
  100% { transform: none; opacity: 1; }
}
.splash__ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0%, var(--c-cyan) 22%, transparent 40%, var(--c-violet) 60%, transparent 78%);
  -webkit-mask: radial-gradient(circle, transparent 57%, #000 59%);
  mask: radial-gradient(circle, transparent 57%, #000 59%);
  animation: spin 2.4s linear infinite;
}
.splash__ring--2 { inset: 16px; opacity: .75; animation: spin 1.7s linear infinite reverse; }
@keyframes spin { to { transform: rotate(360deg); } }

.splash__core {
  font-size: clamp(46px, 12vw, 68px);
  filter: drop-shadow(0 0 18px rgba(110, 231, 255, .75));
  animation: corePulse 1.5s ease-in-out infinite;
}
@keyframes corePulse { 0%, 100% { transform: scale(.94) } 50% { transform: scale(1.07) } }

.splash__title {
  display: flex; gap: 1px;
  font-size: clamp(24px, 6vw, 42px);
  font-weight: 900; letter-spacing: 2px;
}
.splash__title span {
  display: inline-block;
  opacity: 0;
  background: var(--grad-hero);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  animation: letterIn .5s cubic-bezier(.2, 1.3, .4, 1) forwards;
}
@keyframes letterIn { from { opacity: 0; transform: translateY(16px) scale(.75) } to { opacity: 1; transform: none } }

.splash__sub {
  font-size: 12.5px; letter-spacing: 7px; color: var(--ink-3);
  animation: splashFade .6s ease .85s both;
}
@keyframes splashFade { from { opacity: 0 } to { opacity: 1 } }

.splash__bar {
  width: min(240px, 60vw); height: 3px; border-radius: 99px;
  background: rgba(132, 166, 255, .18); overflow: hidden;
  animation: splashFade .4s ease .6s both;
}
.splash__bar i {
  display: block; height: 100%; width: 0; border-radius: 99px;
  background: var(--grad-hero);
  animation: barFill 1.85s cubic-bezier(.4, 0, .2, 1) .35s forwards;
}
@keyframes barFill { to { width: 100% } }