:root {
  --bg: #f7f6f2; --fg: #1d1d1f; --muted: #6b6b70; --card: #fff; --line: #e3e1da;
  --accent: #3b5bdb; --win: #e6f4ea; --win-fg: #1e6b35; --fail: #fdecea; --fail-fg: #a12a1f;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416; --fg: #f2f2f4; --muted: #9a9aa2; --card: #1e1e22; --line: #2e2e34;
    --accent: #7c95ff; --win: #15301e; --win-fg: #8fdca5; --fail: #3a1714; --fail-fg: #ff9f94;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  background: var(--bg); color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", "Noto Sans", "Noto Sans Devanagari", "Noto Sans JP", sans-serif;
}
a { color: var(--accent); }
header { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px; max-width: 720px; width: 100%; margin: 0 auto; }
.logo { font-weight: 700; letter-spacing: .02em; color: var(--fg); text-decoration: none; }
select { font: inherit; padding: 6px 8px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--fg); max-width: 50%; }
main { flex: 1; max-width: 560px; width: 100%; margin: 0 auto; padding: 8px 16px 40px; }
.tools { display: flex; gap: 8px; align-items: center; }
.icon-btn {
  width: 36px; height: 36px; padding: 0; border-radius: 50%; font-size: 1.1rem; font-weight: 700;
  background: var(--card); color: var(--fg); border: 1px solid var(--line);
}
/* Trophy */
.trophy { text-align: center; margin: 0 auto 20px; }
.trophy-art { width: 170px; height: 170px; margin: 0 auto; }
.trophy-art svg { width: 100%; height: 100%; overflow: visible; }
.trophy-name { margin: 2px 0 0; font-weight: 700; font-size: 1.15rem; }
.trophy-wins { margin: 0; color: var(--muted); font-size: .95rem; }
.bar { width: 180px; height: 8px; margin: 10px auto 4px; border-radius: 99px; background: var(--line); overflow: hidden; }
.bar > div { height: 100%; width: 0; border-radius: 99px; background: linear-gradient(90deg, #f59f00, #ffd43b); transition: width .6s ease; }
.trophy-next { margin: 0; color: var(--muted); font-size: .85rem; }
.trophy.tier-0 .trophy-name { color: var(--muted); font-weight: 600; }
.levelup-anim .trophy-art { animation: levelup 1s cubic-bezier(.2, 1.6, .4, 1); }
@keyframes levelup { 0% { transform: scale(.4) rotate(-12deg); opacity: 0; } 60% { transform: scale(1.15) rotate(4deg); opacity: 1; } 100% { transform: none; } }
.tr-rays { transform-origin: 100px 85px; animation: spin 18s linear infinite; }
.tr-spark { transform-box: fill-box; transform-origin: center; animation: twinkle 1.8s ease-in-out infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes twinkle { 0%, 100% { opacity: .2; transform: scale(.5); } 50% { opacity: 1; transform: scale(1); } }
.levelup { margin: 0 0 6px !important; font-weight: 800; font-size: 1.05rem; }
/* Help */
dialog {
  max-width: min(520px, calc(100vw - 32px)); border: 0; border-radius: 16px; padding: 20px 22px;
  background: var(--card); color: var(--fg); box-shadow: 0 20px 60px rgba(0,0,0,.25);
}
dialog::backdrop { background: rgba(0,0,0,.45); }
dialog h2 { margin: 0 0 10px; font-size: 1.25rem; }
dialog p { margin: 0 0 10px; line-height: 1.6; }
dialog form { text-align: end; margin-top: 8px; }
dialog form button { padding: 10px 20px; font-size: 1rem; }
@media (prefers-reduced-motion: reduce) { .tr-rays, .tr-spark, .levelup-anim .trophy-art { animation: none; } }
h1 { font-size: clamp(1.6rem, 5vw, 2.3rem); line-height: 1.2; margin: 0 0 20px; text-align: center; text-wrap: balance; }
form { display: flex; gap: 8px; flex-wrap: wrap; }
input {
  flex: 1 1 240px; min-width: 0; font: inherit; font-size: 1.2rem; padding: 14px 16px;
  border-radius: 12px; border: 1px solid var(--line); background: var(--card); color: var(--fg);
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button {
  font: inherit; font-size: 1.1rem; font-weight: 600; padding: 14px 24px; border: 0; border-radius: 12px;
  background: var(--accent); color: #fff; cursor: pointer;
}
button:disabled { opacity: .6; cursor: wait; }
#result { margin-top: 24px; padding: 20px; border-radius: 14px; animation: pop .25s ease-out; }
#result h2 { margin: 0 0 6px; font-size: 1.35rem; }
#result p { margin: 0; overflow-wrap: anywhere; }
#result.win { background: var(--win); color: var(--win-fg); }
#result.fail, #result.error { background: var(--fail); color: var(--fail-fg); }
.note { margin-top: 8px !important; font-size: .9rem; opacity: .85; }
.stats { color: var(--muted); font-size: .9rem; font-weight: 600; }
.ad { margin: 32px 0 0; min-height: 100px; }
.links { margin-top: 14px !important; font-size: .9rem; }
@keyframes pop { from { transform: scale(.97); opacity: 0; } to { transform: none; opacity: 1; } }
/* About / privacy pages */
.doc { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
.doc h1 { font-size: 1.8rem; }
.doc h2 { font-size: 1.15rem; margin: 28px 0 6px; padding-bottom: 4px; border-bottom: 1px solid var(--line); }