/* guesslight — palette drawn from the subject: a dark sea at night, where the
   only saturated colours are the light signals themselves. Brass is the one
   non-signal accent (ship instruments / lantern housings). Self-contained:
   system fonts only, so it works offline as a PWA. */
:root{
  --abyss:#0a0e14;      /* the sea at night */
  --swell:#121a24;      /* raised surfaces */
  --swell-2:#18222e;
  --line:#243141;       /* hairline rules, like chart ink */
  --haze:#8a97a6;       /* faded chart-ink text */
  --chalk:#e8edf2;      /* primary text */
  --brass:#c8a24a;      /* instruments / lantern brass — UI accent */
  --brass-dim:#7d6733;
  --lt-white:#fff4d6;
  --ok:#24e07a;
  --warn:#ffd23f;
  --font-ui:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:radial-gradient(140% 100% at 50% 0%,#0d141d 0%,var(--abyss) 60%);
  color:var(--chalk);font-family:var(--font-ui);
  -webkit-font-smoothing:antialiased;overscroll-behavior:none;
}

.app{
  min-height:100dvh;max-width:520px;margin:0 auto;
  padding:calc(env(safe-area-inset-top) + 28px) 20px
          calc(env(safe-area-inset-bottom) + 28px);
  display:flex;flex-direction:column;align-items:center;gap:28px;
}

/* ── masthead ── */
.top{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px}
.top h1{font-weight:700;font-size:26px;letter-spacing:.5px}
.top h1 .accent{color:var(--brass)}
.share{font-family:var(--font-ui);font-weight:600;font-size:13px;letter-spacing:.4px;
  padding:8px 14px;border:1px solid var(--line);border-radius:3px;background:transparent;
  color:var(--brass);cursor:pointer;transition:border-color .15s,background .15s}
.share:hover{border-color:var(--brass-dim);background:var(--swell)}
.share:focus-visible{outline:2px solid var(--brass);outline-offset:2px}

/* ── share modal ── */
.modal{position:fixed;inset:0;z-index:10;display:grid;place-items:center;padding:24px;
  background:rgba(5,8,12,.82);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.qr-card{background:#fff;border-radius:12px;padding:22px;display:flex;flex-direction:column;
  align-items:center;gap:12px;max-width:320px;width:100%;
  box-shadow:0 20px 60px rgba(0,0,0,.5)}
.qr-title{color:#0a0e14;font-weight:600;font-size:16px;letter-spacing:.2px}
.qr{width:240px;max-width:100%;height:auto;image-rendering:pixelated;display:block}
.qr-url{font-family:var(--font-mono);font-size:13px;color:#3a4756;letter-spacing:.3px}
.qr-hint{font-size:11px;color:#8a97a6;letter-spacing:.5px}

/* ── the tap target: the signature element ── */
.tap{
  position:relative;width:230px;height:230px;border-radius:50%;
  margin-top:16px;flex:0 0 auto;
  border:1px solid var(--brass-dim);
  background:radial-gradient(circle at 50% 40%,var(--swell-2) 0%,var(--abyss) 72%);
  color:var(--chalk);cursor:pointer;
  display:grid;place-items:center;
  transition:transform .08s ease, border-color .15s;
  -webkit-tap-highlight-color:transparent;
}
.tap:hover{border-color:var(--brass)}
.tap:active{transform:scale(.96)}
.tap:focus-visible{outline:2px solid var(--brass);outline-offset:4px}
.tap-label{font-family:var(--font-mono);font-size:34px;font-weight:700;
  letter-spacing:4px;color:var(--lt-white);text-shadow:0 0 22px rgba(255,244,214,.35)}
.tap-count{position:absolute;bottom:44px;font-family:var(--font-mono);
  font-size:12px;color:var(--haze);letter-spacing:1px}

/* pulsing rings — Shazam's "listening" feel */
.tap::before,.tap::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  border:1px solid var(--brass);opacity:0;pointer-events:none;
  animation:pulse 2.8s ease-out infinite;
}
.tap::after{animation-delay:1.4s}
@keyframes pulse{
  0%{transform:scale(1);opacity:.45}
  100%{transform:scale(1.42);opacity:0}
}

/* ── results card, driven by the confidence gate ── */
.result{width:100%;min-height:96px;display:flex;flex-direction:column;
  align-items:center;text-align:center;gap:4px}
.hint{color:var(--haze);font-size:14px;letter-spacing:.2px}
.card{width:100%;padding:20px 18px;border:1px solid var(--line);border-radius:6px;
  background:var(--swell);display:flex;flex-direction:column;align-items:center;gap:6px}
.card.match{border-color:var(--ok)}
.card.weak{border-color:var(--brass-dim)}
.card.tie{border-color:var(--brass)}

.label{font-family:var(--font-mono);font-size:11px;letter-spacing:1.5px;
  text-transform:uppercase;color:var(--haze)}
.card.match .label{color:var(--ok)}
.name{font-weight:600;font-size:22px;letter-spacing:.3px}
.sub{font-family:var(--font-mono);font-size:12px;color:var(--haze);letter-spacing:.4px}
.guess{font-size:16px;color:var(--chalk)}
.divider{width:60%;height:1px;background:var(--line);margin:8px 0 2px}

/* ── reset ── */
.reset{margin-top:auto;font-family:var(--font-ui);font-weight:600;font-size:13px;
  letter-spacing:.5px;padding:10px 22px;border:1px solid var(--line);border-radius:3px;
  background:transparent;color:var(--haze);cursor:pointer;transition:border-color .15s,color .15s}
.reset:hover{border-color:var(--brass-dim);color:var(--chalk)}
.reset:focus-visible{outline:2px solid var(--brass);outline-offset:2px}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}