/* Skiliograph Math Flash Cards v1.2.0 */
.skm-game {
  --skm-ink: #2b2d42;
  --skm-soft: #5c5f78;
  --skm-card: #ffffff;
  --skm-bg: #fff7e6;
  --skm-sun: #ffcf4a;
  --skm-sun-deep: #e8a917;
  --skm-sky: #a9dcff;   --skm-sky-deep: #7cbfee;
  --skm-lilac: #dccbff; --skm-lilac-deep: #b49ef0;
  --skm-peach: #ffd3a8; --skm-peach-deep: #f0ae70;
  --skm-right: #8fe3a5; --skm-right-deep: #5cc27b;
  --skm-little: #fff1a8; --skm-rising: #ffd9e8; --skm-super: #d6e6ff;
  max-width: 520px;
  margin: 24px auto;
  padding: 20px 16px 24px;
  background: var(--skm-bg);
  border-radius: 24px;
  text-align: center;
  font-family: "Baloo 2", "Comic Sans MS", "Trebuchet MS", system-ui, sans-serif;
  color: var(--skm-ink);
  box-sizing: border-box;
}
.skm-game *, .skm-game *::before, .skm-game *::after { box-sizing: border-box; }
.skm-game [hidden] { display: none !important; }
.skm-game button { font-family: inherit; -webkit-tap-highlight-color: transparent; line-height: 1.2; text-transform: none; letter-spacing: normal; }
.skm-game button:focus-visible { outline: 4px solid var(--skm-ink); outline-offset: 3px; }

.skm-title { margin: 0 0 8px; font-size: 28px; line-height: 1.2; color: var(--skm-ink); font-family: inherit; }

.skm-lead { margin: 0 0 14px; font-size: 18px; font-weight: 600; color: var(--skm-soft); }
.skm-levels { display: grid; gap: 12px; margin-bottom: 18px; }
.skm-level {
  display: flex; align-items: center; gap: 14px; width: 100%;
  padding: 14px 16px; text-align: left; cursor: pointer;
  border: 3px solid transparent; border-radius: 18px; color: var(--skm-ink);
  box-shadow: 0 4px 0 rgba(43, 45, 66, .12);
  transition: transform .1s, border-color .15s;
}
.skm-level-little { background: var(--skm-little); }
.skm-level-rising { background: var(--skm-rising); }
.skm-level-super  { background: var(--skm-super); }
.skm-level:hover { transform: translateY(-2px); color: var(--skm-ink); }
.skm-level[aria-pressed="true"] { border-color: var(--skm-ink); }
.skm-level-icon {
  flex: 0 0 64px; font-size: 22px; line-height: 1; letter-spacing: -2px;
  color: #ffb703; text-shadow: 0 2px 0 #d99500; text-align: center;
}
.skm-level-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.skm-level-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; }
.skm-level-name { font-size: 22px; font-weight: 800; line-height: 1.15; }
.skm-level-ages {
  font-size: 13px; font-weight: 700; letter-spacing: .03em;
  padding: 1px 8px; border-radius: 999px; background: rgba(255, 255, 255, .75);
}
.skm-level-count {
  flex: 0 0 auto; margin-left: auto; align-self: flex-start;
  font-size: 15px; font-weight: 800; white-space: nowrap; font-variant-numeric: tabular-nums;
}
.skm-level-blurb { font-size: 15px; font-weight: 600; line-height: 1.3; color: var(--skm-soft); }

.skm-ops-label { margin: 0 0 8px; font-size: 16px; font-weight: 700; color: var(--skm-soft); }
.skm-ops { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 18px; }
.skm-op {
  padding: 8px 14px; cursor: pointer; font-size: 17px; font-weight: 800; color: var(--skm-soft);
  background: #fff; border: 2px dashed #cfc4ad; border-radius: 999px;
  transition: background .15s, transform .1s;
}
.skm-op:hover { background: #fff; color: var(--skm-ink); }
.skm-op[aria-pressed="true"] { color: var(--skm-ink); border: 2px solid var(--skm-ink); }
.skm-game[data-menu-level="little"] .skm-op[aria-pressed="true"] { background: var(--skm-little); }
.skm-game[data-menu-level="rising"] .skm-op[aria-pressed="true"] { background: var(--skm-rising); }
.skm-game[data-menu-level="super"]  .skm-op[aria-pressed="true"] { background: var(--skm-super); }
.skm-op:active { transform: scale(.95); }
.skm-op.is-nudge { animation: skm-shake .35s ease; }

.skm-reset { margin-top: 10px; font-size: 14px; }
.skm-reset .skm-link { margin-top: 0; font-size: 14px; color: var(--skm-soft); }
.skm-reset-ask { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 6px 10px; }
.skm-reset-q { font-weight: 700; }
.skm-reset-yes {
  padding: 6px 14px; cursor: pointer; font-size: 14px; font-weight: 800; color: #fff;
  background: #c4495a; border: none; border-radius: 999px;
}

.skm-big {
  display: block; width: 100%; padding: 16px 20px; cursor: pointer;
  font-size: 26px; font-weight: 800; color: var(--skm-ink);
  background: var(--skm-sun); border: none; border-radius: 18px;
  box-shadow: 0 6px 0 var(--skm-sun-deep);
  transition: transform .1s, box-shadow .1s;
}
.skm-big:hover { transform: translateY(-2px); background: var(--skm-sun); color: var(--skm-ink); }
.skm-big:active { transform: translateY(4px); box-shadow: 0 2px 0 var(--skm-sun-deep); }

.skm-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.skm-back {
  padding: 6px 14px; cursor: pointer; font-size: 16px; font-weight: 700; color: var(--skm-ink);
  background: #fff; border: 2px solid var(--skm-ink); border-radius: 999px;
}
.skm-back:hover { background: #fff; color: var(--skm-ink); }
.skm-back:active { transform: scale(.95); }
.skm-tag { font-size: 16px; font-weight: 800; padding: 5px 14px; border-radius: 999px; background: #fff; }
.skm-game[data-level="little"] .skm-tag { background: var(--skm-little); }
.skm-game[data-level="rising"] .skm-tag { background: var(--skm-rising); }
.skm-game[data-level="super"]  .skm-tag { background: var(--skm-super); }

.skm-stars { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px; font-size: 34px; line-height: 1.1; margin-bottom: 12px; user-select: none; }
.skm-stars--many { font-size: 26px; gap: 3px; }
.skm-star { color: #ddd3bf; transition: color .2s, transform .25s; display: inline-block; }
.skm-star.is-on { color: #ffb703; transform: scale(1.15); text-shadow: 0 2px 0 #e09400; }

.skm-card {
  background: var(--skm-card);
  border-radius: 20px;
  padding: 40px 12px;
  margin: 0 auto 18px;
  box-shadow: 0 6px 0 #e8dcc4, 0 10px 24px rgba(0, 0, 0, .08);
}
.skm-question { font-size: clamp(32px, 10vw, 60px); font-weight: 800; line-height: 1.1; white-space: nowrap; font-variant-numeric: tabular-nums; }
.skm-game[data-level="little"] .skm-question { font-size: clamp(40px, 12vw, 64px); }
.skm-card.is-new { animation: skm-flip .45s ease; }
.skm-card.is-shake { animation: skm-shake .4s ease; }

.skm-choices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.skm-choice {
  font-size: clamp(22px, 7vw, 36px); font-weight: 800; color: var(--skm-ink);
  padding: 18px 0; border: none; border-radius: 18px; cursor: pointer;
  font-variant-numeric: tabular-nums;
  transition: transform .1s, box-shadow .1s, opacity .2s;
}
.skm-c0 { background: var(--skm-sky);   box-shadow: 0 5px 0 var(--skm-sky-deep); }
.skm-c1 { background: var(--skm-lilac); box-shadow: 0 5px 0 var(--skm-lilac-deep); }
.skm-c2 { background: var(--skm-peach); box-shadow: 0 5px 0 var(--skm-peach-deep); }
.skm-c0:hover { background: var(--skm-sky); } .skm-c1:hover { background: var(--skm-lilac); } .skm-c2:hover { background: var(--skm-peach); }
.skm-choice:hover { transform: translateY(-2px); color: var(--skm-ink); }
.skm-choice:active { transform: translateY(3px); box-shadow: 0 2px 0 rgba(43, 45, 66, .15); }
.skm-choice.is-correct { background: var(--skm-right); box-shadow: 0 5px 0 var(--skm-right-deep); animation: skm-pop .4s ease; }
.skm-choice.is-wrong, .skm-choice:disabled { background: #ece6da; box-shadow: 0 5px 0 #d8d0c0; color: #a29b8c; cursor: default; transform: none; }
.skm-choice.is-correct:disabled { background: var(--skm-right); color: var(--skm-ink); }

.skm-msg { min-height: 1.6em; margin-top: 16px; font-size: 22px; font-weight: 700; }

.skm-done { padding: 10px 0 4px; }
.skm-done-star {
  font-size: 96px; line-height: 1; color: #ffb703; text-shadow: 0 5px 0 #d99500;
  animation: skm-bob 2.4s ease-in-out infinite;
}
.skm-done-title { margin: 8px 0 0; font-size: 34px; font-weight: 800; line-height: 1.15; }
.skm-done-text { margin: 4px 0 20px; font-size: 18px; font-weight: 600; color: var(--skm-soft); }
.skm-link {
  margin-top: 14px; padding: 8px 16px; cursor: pointer; background: none; border: none;
  font-size: 18px; font-weight: 700; color: var(--skm-ink); text-decoration: underline; text-underline-offset: 4px;
}
.skm-link:hover { background: none; color: var(--skm-ink); }
.skm-total { margin: 8px 0 0; font-size: 15px; color: var(--skm-soft); }

.skm-party { position: fixed; inset: 0; pointer-events: none; overflow: hidden; z-index: 99999; transition: opacity .7s ease; }
.skm-party.is-leaving { opacity: 0; }
.skm-confetti { position: absolute; inset: 0; }
.skm-banner {
  position: absolute; top: 36%; left: 50%; transform: translate(-50%, -50%);
  background: #fff; color: #2b2d42; padding: 14px 28px; border-radius: 999px;
  font: 800 clamp(22px, 6vw, 34px)/1.2 "Baloo 2", "Comic Sans MS", system-ui, sans-serif;
  box-shadow: 0 8px 30px rgba(0, 0, 0, .15); white-space: nowrap;
  animation: skm-banner-in .8s cubic-bezier(.2, .9, .3, 1.2) .15s both;
}
.skm-balloon {
  position: absolute; bottom: -150px;
  animation-name: skm-rise; animation-timing-function: cubic-bezier(.35, .1, .6, 1); animation-fill-mode: both;
}
.skm-balloon-body {
  position: relative; width: 56px; height: 70px;
  background: var(--c); border-radius: 50% 50% 46% 46%;
  box-shadow: inset -8px -10px 0 rgba(0, 0, 0, .1);
  animation: skm-sway 2s ease-in-out infinite alternate;
  transform-origin: 50% 140%;
}
.skm-balloon-body::before { content: ""; position: absolute; top: 12px; left: 13px; width: 10px; height: 16px; background: rgba(255, 255, 255, .6); border-radius: 50%; }
.skm-balloon-body::after { content: ""; position: absolute; top: 70px; left: 27px; width: 2px; height: 60px; background: rgba(0, 0, 0, .25); }

@keyframes skm-flip { 0% { transform: rotateY(90deg); } 100% { transform: rotateY(0); } }
@keyframes skm-shake { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-10px); } 75% { transform: translateX(10px); } }
@keyframes skm-pop { 50% { transform: scale(1.12); } }
@keyframes skm-bob { 0%, 100% { transform: translateY(0) rotate(-4deg); } 50% { transform: translateY(-8px) rotate(4deg); } }
@keyframes skm-rise { 0% { transform: translateY(0); opacity: 0; } 8% { opacity: 1; } 100% { transform: translateY(calc(-100vh - 260px)); opacity: 1; } }
@keyframes skm-sway { from { transform: rotate(-7deg) translateX(-6px); } to { transform: rotate(7deg) translateX(6px); } }
@keyframes skm-banner-in { from { transform: translate(-50%, -40%) scale(.85); opacity: 0; } to { transform: translate(-50%, -50%) scale(1); opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  .skm-card.is-new, .skm-card.is-shake, .skm-choice.is-correct, .skm-done-star, .skm-op.is-nudge { animation: none; }
  .skm-banner { animation-duration: .01s; }
}
@media (max-width: 380px) {
  .skm-choices { gap: 8px; }
  .skm-card { padding: 30px 8px; }
  .skm-level { gap: 10px; padding: 12px; }
  .skm-level-icon { flex-basis: 44px; font-size: 16px; }
  .skm-op { padding: 7px 11px; font-size: 15px; }
}