/* Weird Animal Quiz — design system with light/dark themes */
:root {
  --radius: 18px;
  --maxw: 540px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
[data-theme="dark"] {
  --bg: #0a1e14;
  --bg-grad: radial-gradient(1100px 520px at 50% -8%, #173f28 0%, #0a1e14 62%) fixed;
  --ink: #f1f5ee;
  --muted: #9db3a3;
  --card: #ffffff0c;
  --card-solid: #122a1d;
  --line: #ffffff1c;
  --accent: #ffc53d;
  --accent-ink: #3a2a00;
  --accent-soft: #ffc53d22;
  --green: #3ddc84;
  --green-soft: #3ddc8426;
  --red: #ff7a7a;
  --red-soft: #ff7a7a22;
  --glow: #8f7bff;
  --glow-soft: #8f7bff26;
  --shadow: 0 10px 34px #00000066;
  --badge-bg: #ffffff14;
}
[data-theme="light"] {
  --bg: #f7f3e8;
  --bg-grad: radial-gradient(1100px 520px at 50% -8%, #efe6cf 0%, #f7f3e8 62%) fixed;
  --ink: #1e2b22;
  --muted: #6d7f6f;
  --card: #ffffff;
  --card-solid: #ffffff;
  --line: #1e2b2218;
  --accent: #e8a100;
  --accent-ink: #3a2a00;
  --accent-soft: #e8a1001f;
  --green: #15803d;
  --green-soft: #15803d1c;
  --red: #dc2626;
  --red-soft: #dc26261a;
  --glow: #6d4de0;
  --glow-soft: #6d4de01f;
  --shadow: 0 10px 30px #3a2a0055;
  --badge-bg: #1e2b2210;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg-grad); background-color: var(--bg); color: var(--ink);
  font-family: var(--font); min-height: 100dvh;
  display: flex; flex-direction: column;
  transition: background-color .25s ease, color .25s ease;
}
#confetti { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 50; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: max(12px, env(safe-area-inset-top)) 16px 10px;
  max-width: var(--maxw); width: 100%; margin: 0 auto;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  background: none; border: none; color: var(--ink);
  font-size: 1.02rem; font-weight: 800; letter-spacing: -.01em; cursor: pointer; padding: 6px 0;
}
.logo-emoji { font-size: 1.4rem; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.hud { display: flex; gap: 8px; font-weight: 700; font-size: .85rem; }
.hud span { background: var(--badge-bg); padding: 7px 13px; border-radius: 999px; }
.icon-btn {
  background: var(--badge-bg); border: 1px solid var(--line); color: var(--ink);
  width: 40px; height: 40px; border-radius: 50%; font-size: 1.1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:active { transform: scale(.92); }
.hidden { display: none !important; }

/* ---------- layout ---------- */
main { flex: 1; width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 2px 18px 28px; }
.screen { display: none; animation: fadein .28s ease; }
.screen.active { display: block; }
@keyframes fadein { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------- hero ---------- */
.hero { text-align: center; padding-top: 3vh; }
.hero-emoji { font-size: 4.2rem; filter: drop-shadow(0 8px 18px #00000044); animation: float 3.2s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.hero h1 { font-size: 2.5rem; margin: .35em 0 .25em; letter-spacing: -.03em; line-height: 1.05; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--accent), #ff8a3d);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.tagline { color: var(--muted); margin: 0 auto 1.3em; line-height: 1.55; max-width: 34ch; }
.stats { display: flex; justify-content: center; gap: 10px; margin-bottom: 20px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 10px 18px; display: flex; flex-direction: column; box-shadow: var(--shadow);
}
.stat b { font-size: 1.35rem; color: var(--accent); }
.stat span { font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.menu { display: grid; gap: 12px; margin-bottom: 16px; }

/* ---------- buttons ---------- */
.btn {
  appearance: none; border: 1.5px solid var(--line); background: var(--card); color: var(--ink);
  font-family: var(--font); font-size: 1.02rem; font-weight: 700;
  padding: 15px 20px; border-radius: var(--radius); cursor: pointer; width: 100%;
  box-shadow: var(--shadow);
  transition: transform .1s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: scale(.98); }
.btn.primary { background: linear-gradient(180deg, #ffd35e, var(--accent)); border-color: #00000000; color: var(--accent-ink); }
.btn.glow { background: var(--glow-soft); border-color: var(--glow); color: var(--ink); }
.btn.glow .pill { background: var(--glow-soft); }
.btn.big { font-size: 1.12rem; padding: 17px 20px; }
.pill {
  display: inline-block; font-size: .7rem; font-weight: 800; letter-spacing: .04em;
  background: #00000028; color: inherit; padding: 4px 11px; border-radius: 999px;
  margin-left: 8px; vertical-align: middle; text-transform: uppercase;
}
.best { color: var(--muted); margin-bottom: 14px; font-size: .95rem; }
.best b { color: var(--accent); }
.linklike { background: none; border: none; color: var(--muted); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; font-size: .95rem; margin-top: 16px; font-family: var(--font); }

/* ---------- ads ---------- */
.ad-wrap {
  margin: 20px auto 4px; min-height: 96px; max-width: 100%;
  background: var(--card); border: 1.5px dashed var(--line); border-radius: 14px;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.ad-wrap:empty::after { content: "advertisement"; color: var(--muted); opacity: .5; font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; }

/* ---------- quiz ---------- */
.progress { height: 10px; background: var(--badge-bg); border-radius: 999px; overflow: hidden; margin: 6px 0 16px; }
.progress-fill {
  height: 100%; width: 0%; border-radius: 999px;
  background: linear-gradient(90deg, var(--green), var(--accent));
  transition: width .35s ease;
}
.photo-wrap {
  margin: 0 0 14px; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow); background: #000;
}
.photo-wrap img { display: block; width: 100%; aspect-ratio: 4/3; object-fit: cover; animation: photoin .4s ease; }
@keyframes photoin { from { opacity: 0; transform: scale(1.03); } to { opacity: 1; transform: none; } }
.prompt { font-size: 1.3rem; margin: 0 0 14px; text-align: center; letter-spacing: -.01em; }

.options { display: grid; gap: 10px; }
.option {
  display: flex; align-items: center; gap: 12px;
  text-align: left; font-family: var(--font); font-size: 1.04rem; font-weight: 650;
  background: var(--card); border: 1.5px solid var(--line); color: var(--ink);
  padding: 13px 16px 13px 13px; border-radius: var(--radius); cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform .1s ease, border-color .15s ease, background .15s ease;
}
.option:hover { transform: translateY(-1px); }
.option:active { transform: scale(.98); }
.option:disabled { cursor: default; }
.opt-letter {
  flex: none; width: 34px; height: 34px; border-radius: 11px;
  background: var(--badge-bg); display: flex; align-items: center; justify-content: center;
  font-size: .85rem; font-weight: 800; color: var(--muted);
}
.option.correct { background: var(--green-soft); border-color: var(--green); animation: pop .3s ease; }
.option.correct .opt-letter { background: var(--green); color: #fff; }
.option.wrong { background: var(--red-soft); border-color: var(--red); animation: shake .3s ease; }
.option.wrong .opt-letter { background: var(--red); color: #fff; }
.option.dim { opacity: .42; }
@keyframes pop { 0% { transform: scale(1); } 40% { transform: scale(1.025); } 100% { transform: scale(1); } }
@keyframes shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }

/* ---------- fact card ---------- */
.fact {
  margin-top: 16px; background: var(--card); border: 1.5px solid var(--accent);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
  animation: fadein .3s ease;
}
.fact-head { font-size: 1.2rem; font-weight: 800; margin-bottom: 4px; letter-spacing: -.01em; }
.fact-name { font-weight: 800; font-size: 1.05rem; color: var(--accent); }
[data-theme="light"] .fact-name { color: #b97f0a; }
.fact-name .sci { font-weight: 500; font-style: italic; color: var(--muted); font-size: .88em; }
.fact-label { display: inline-block; font-size: .72rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 10px 0 2px; }
.fact-text { line-height: 1.6; margin: .2em 0 1.1em; font-size: 1.02rem; }
.fact .btn { width: auto; padding: 13px 34px; }

/* ---------- results ---------- */
.results { text-align: center; padding-top: 3vh; }
.results-emoji { font-size: 4.2rem; animation: float 3s ease-in-out infinite; }
.results h2 { font-size: 1.9rem; letter-spacing: -.02em; margin: .4em 0 .1em; }
.score-big { font-size: 5rem; font-weight: 900; letter-spacing: -.04em; line-height: 1; margin: .15em 0 .3em; }
.score-big #final-score {
  background: linear-gradient(100deg, var(--accent), #ff8a3d);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.score-total { font-size: 2rem; color: var(--muted); font-weight: 700; }
.results-msg { color: var(--muted); line-height: 1.55; margin: 0 auto 1.3em; max-width: 34ch; }

/* ---------- credits ---------- */
.muted { color: var(--muted); line-height: 1.55; }
.credits { display: grid; gap: 10px; margin: 16px 0 20px; text-align: left; }
.credit {
  display: grid; grid-template-columns: 60px 1fr; gap: 12px; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 9px; text-decoration: none; color: var(--ink); box-shadow: var(--shadow);
}
.credit img { width: 60px; height: 60px; object-fit: cover; border-radius: 10px; }
.credit .c-name { font-weight: 700; font-size: .95rem; }
.credit .c-by { font-size: .8rem; color: var(--muted); }

footer { text-align: center; color: var(--muted); font-size: .8rem; padding: 14px 18px max(18px, env(safe-area-inset-bottom)); }

@media (min-width: 640px) {
  .hero h1 { font-size: 3rem; }
  .photo-wrap img { aspect-ratio: 16/10; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}