:root {
  --bg: #fff6fa;
  --bg-blob1: #ffe1ec;
  --bg-blob2: #e3f7f1;
  --bg-blob3: #ece6ff;
  --card: #ffffff;
  --text: #3b3352;
  --muted: #7b7292;
  --border: #f0e4ee;
  --accent: #ff7aa2;
  --accent2: #9b86ff;
  --accent-text: #ffffff;
  --link: #7d63f0;
  --field: #fbf7ff;
  --shadow: 0 10px 30px rgba(155, 120, 190, 0.15);
  --safe: #1f9d63;      --safe-bg: #e6f8ef;
  --bad: #e0455f;       --bad-bg: #ffeaee;
  --warn: #d0761b;      --warn-bg: #fff1e2;
  --info: #3f78e0;      --info-bg: #e8f0ff;
  --unk: #a57e00;       --unk-bg: #fff8d9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1929;
    --bg-blob1: #3a2338;
    --bg-blob2: #1d3a35;
    --bg-blob3: #2c2650;
    --card: #282338;
    --text: #f3eefc;
    --muted: #b3aac8;
    --border: #3a3350;
    --accent: #ff8fb1;
    --accent2: #a993ff;
    --accent-text: #1c1929;
    --link: #b9a6ff;
    --field: #221e31;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --safe: #6fdba2;      --safe-bg: #193326;
    --bad: #ff8a9c;       --bad-bg: #3a1d26;
    --warn: #ffb36b;      --warn-bg: #3a2a18;
    --info: #8fb0ff;      --info-bg: #1d2a48;
    --unk: #f0d25c;       --unk-bg: #352f15;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(40rem 30rem at 10% -5%, var(--bg-blob1), transparent 70%),
    radial-gradient(35rem 30rem at 100% 10%, var(--bg-blob3), transparent 70%),
    radial-gradient(40rem 30rem at 50% 110%, var(--bg-blob2), transparent 70%),
    var(--bg);
  background-attachment: fixed;
  font-family: "M PLUS Rounded 1c", "Nunito", "Hiragino Maru Gothic ProN", "Arial Rounded MT Bold", system-ui, sans-serif;
  font-weight: 500;
  line-height: 1.75;
}
html[lang="en"] body { font-family: "Nunito", "M PLUS Rounded 1c", "Arial Rounded MT Bold", system-ui, sans-serif; }
.wrap { max-width: 760px; margin: 0 auto; padding: 20px 16px 48px; }
a { color: var(--link); }

.lang-switch { text-align: right; font-size: 13px; color: var(--muted); }
.lang-switch a { text-decoration: none; font-weight: 800; }

header { text-align: center; margin: 8px 0 4px; }
.eyebrow {
  display: inline-block;
  margin: 0;
  padding: 2px 12px;
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  font-size: 12px;
  box-shadow: var(--shadow);
}
h1 {
  margin: 12px 0 0;
  font-size: clamp(26px, 6vw, 36px);
  font-weight: 800;
  line-height: 1.3;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
h2 { margin: 0 0 12px; font-size: 19px; font-weight: 800; }
h3 { margin: 18px 0 8px; font-size: 15px; font-weight: 800; }

.lead { max-width: 560px; margin: 10px auto 0; color: var(--muted); font-size: 15px; }

/* 説明カード */
.points { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.points li { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 14px 12px; border-radius: 16px; background: var(--field); text-align: center; font-size: 14px; }
.points .icon { font-size: 28px; }
.scope-note { margin: 12px 4px 0; font-size: 13px; color: var(--muted); }
@media (max-width: 560px) {
  .points { grid-template-columns: 1fr; }
  .points li { flex-direction: row; text-align: left; }
  .points .icon { font-size: 22px; }
}

/* キャラクターと吹き出し */
.stage {
  display: grid;
  grid-template-columns: 210px 1fr;
  align-items: center;
  gap: 8px;
  margin: 4px 0 8px;
}
.mascot-box { position: relative; width: 210px; height: 230px; }
/* 煙やキラキラが枠で切れないよう、キャンバスは枠の外まで広げる（クリックは下の要素に通す） */
#mascot {
  position: absolute;
  left: -90px;
  right: -90px;
  top: -80px;
  bottom: -60px;
  width: calc(100% + 180px);
  height: calc(100% + 140px);
  z-index: 1;
  display: block;
  pointer-events: none;
}
.mascot-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 96px;
  animation: wobble 0.6s ease-in-out infinite;
}
@keyframes wobble {
  0%, 100% { transform: rotate(0) scale(1); }
  25% { transform: rotate(-9deg) scale(1.04, 0.96); }
  75% { transform: rotate(9deg) scale(0.96, 1.04); }
}
/* 煙（canvas）がひよこを覆ったあとで消す */
.has-mascot.mascot-born .mascot-fallback { animation: hatch-out 0.15s ease-in 0.3s forwards; }
@keyframes hatch-out { to { transform: scale(0.2); opacity: 0; visibility: hidden; } }
.poof {
  position: absolute;
  left: 50%;
  top: 8%;
  font-size: 22px;
  font-weight: 800;
  color: var(--accent2);
  white-space: nowrap;
  pointer-events: none;
  z-index: 2;
  animation: poof-up 1.4s ease-out forwards;
}
@keyframes poof-up {
  0% { transform: translate(-50%, 10px) scale(0.6); opacity: 0; }
  20% { transform: translate(-50%, 0) scale(1.15); opacity: 1; }
  70% { opacity: 1; }
  100% { transform: translate(-50%, -24px) scale(1); opacity: 0; }
}
.bubble {
  position: relative;
  background: var(--card);
  border-radius: 24px;
  padding: 16px 20px;
  box-shadow: var(--shadow);
  font-size: 16px;
}
.bubble::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  margin-top: -12px;
  border: 12px solid transparent;
  border-right-color: var(--card);
  border-left: 0;
}
.bubble-name { margin: 0 0 2px; font-size: 12px; font-weight: 800; color: var(--accent); }
.bubble-text { margin: 0; }
.bubble.pop { animation: pop .35s ease; }
@keyframes pop { 0% { transform: scale(.94); } 60% { transform: scale(1.03); } 100% { transform: scale(1); } }

.card {
  background: var(--card);
  border-radius: 24px;
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.row { display: flex; gap: 10px; }
input {
  flex: 1;
  min-width: 0;
  font: inherit;
  font-size: 16px;
  padding: 14px 20px;
  border: 2px solid var(--border);
  border-radius: 999px;
  background: var(--field);
  color: var(--text);
  transition: border-color .2s;
}
input:focus { outline: none; border-color: var(--accent2); }
button {
  font: inherit;
  font-size: 16px;
  font-weight: 800;
  padding: 14px 28px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: var(--accent-text);
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 6px 16px rgba(255, 122, 162, 0.35);
  transition: transform .15s, box-shadow .15s;
}
button:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(255, 122, 162, 0.4); }
button:active { transform: translateY(0); }
button:disabled { opacity: .7; cursor: progress; transform: none; }
.note { margin: 12px 4px 0; font-size: 13px; color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* 結果 */
.result { border: 3px solid transparent; animation: rise .4s ease; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.result.s-SAFE { border-color: var(--safe); background: var(--safe-bg); }
.result.s-VULNERABLE { border-color: var(--bad); background: var(--bad-bg); }
.result.s-CHECK_DISTRO { border-color: var(--warn); background: var(--warn-bg); }
.result.s-NOT_PHP { border-color: var(--info); background: var(--info-bg); }
.result.s-UNKNOWN { border-color: var(--unk); background: var(--unk-bg); }
.result.s-ERROR { border-color: var(--border); }
.badge { font-size: 22px; font-weight: 800; }
.s-SAFE .badge { color: var(--safe); }
.s-VULNERABLE .badge { color: var(--bad); }
.s-CHECK_DISTRO .badge { color: var(--warn); }
.s-NOT_PHP .badge { color: var(--info); }
.s-UNKNOWN .badge { color: var(--unk); }
.message { margin: 6px 0 12px; }
.evidence {
  margin: 0 0 12px;
  padding: 10px 14px;
  border-radius: 14px;
  background: var(--card);
  font-size: 13px;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 2px 12px;
}
.evidence:empty { display: none; }
.evidence dt { color: var(--muted); }
.evidence dd { margin: 0; font-family: ui-monospace, Menlo, Consolas, monospace; word-break: break-all; }
.tips { margin: 0 0 12px; padding-left: 20px; font-size: 14px; }
.tips:empty { display: none; }
.next { font-size: 14px; padding: 12px 16px; border-radius: 14px; background: var(--card); }
.next:empty { display: none; }
.next h3 { margin-top: 0; }
.next ol { margin: 0; padding-left: 20px; }
.next ol + h3 { margin-top: 14px; }
.next p { margin: 8px 0 0; font-size: 13px; color: var(--muted); }
.meta { margin: 12px 0 0; font-size: 12px; color: var(--muted); word-break: break-all; }

/* 説明 */
.legend { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.legend li { display: flex; align-items: center; gap: 10px; padding: 6px 12px; border-radius: 14px; background: var(--field); }
.legend .emoji { font-size: 20px; }
.versions { border-collapse: separate; border-spacing: 0 6px; font-size: 14px; }
.versions td { padding: 6px 14px; background: var(--field); }
.versions td:first-child { border-radius: 999px 0 0 999px; }
.versions td:last-child { border-radius: 0 999px 999px 0; font-family: ui-monospace, Menlo, Consolas, monospace; font-weight: 700; }
details { border-radius: 16px; background: var(--field); padding: 10px 16px; margin-bottom: 8px; }
summary { cursor: pointer; font-weight: 800; }
details p { margin: 8px 0 0; font-size: 14px; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; background: var(--card); padding: 1px 6px; border-radius: 6px; }
footer { font-size: 12px; color: var(--muted); text-align: center; }

@media (max-width: 560px) {
  .stage { grid-template-columns: 1fr; justify-items: center; }
  .mascot-box { width: 180px; height: 190px; }
  .bubble::before {
    left: 50%;
    top: -12px;
    margin: 0 0 0 -12px;
    border: 12px solid transparent;
    border-bottom-color: var(--card);
    border-top: 0;
  }
  .row { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .mascot-born .mascot-fallback { display: none; }
}