:root {
  --fondo: #0e1b4d;
  --fondo2: #16266b;
  --acento: #ffd21e;
  --acento2: #e23b2e;
  --texto: #f5f6ff;
  --tenue: #aab4e8;
  --ok: #34d399;
  --card-radius: 20px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, var(--fondo2), var(--fondo)) fixed;
  color: var(--texto);
  min-height: 100dvh;
  padding: 20px 16px 40px;
  display: flex; flex-direction: column; align-items: center;
}
.wrap { width: 100%; max-width: 460px; }

.brand { text-align: center; margin: 8px 0 20px; }
.brand .logo {
  font-weight: 900; font-style: italic; letter-spacing: -1px;
  font-size: 52px; color: var(--acento); line-height: .9;
  text-shadow: 0 2px 0 rgba(0,0,0,.35);
}
.brand .sub { color: var(--acento2); font-weight: 800; font-style: italic; font-size: 18px; margin-top: -2px; }
.brand .dir { color: var(--tenue); font-size: 12px; margin-top: 8px; }

.card {
  background: linear-gradient(160deg, #1b2c78, #0c1740);
  border: 1px solid rgba(255,210,30,.25);
  border-radius: var(--card-radius);
  padding: 22px 20px;
  box-shadow: 0 18px 40px rgba(0,0,0,.45);
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 4px; font-size: 15px; letter-spacing: .5px; text-transform: uppercase; color: var(--acento); }
.muted { color: var(--tenue); font-size: 13px; }

/* Sellos */
.sellos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 18px 0 6px; }
.sello {
  aspect-ratio: 1; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 20px;
  border: 2px dashed rgba(255,210,30,.4); color: rgba(255,210,30,.5);
  background: rgba(255,255,255,.03);
  transition: transform .3s, background .3s;
}
.sello.on {
  background: var(--acento); color: #12204f; border-style: solid; border-color: var(--acento);
  box-shadow: 0 6px 14px rgba(255,210,30,.35);
}
.sello.premio {
  border-color: var(--acento2); color: var(--acento2);
  font-size: 13px; text-transform: uppercase; line-height: 1; text-align: center;
}
.sello.premio.on { background: var(--acento2); color: #fff; border-color: var(--acento2); }
.pop { transform: scale(1.15); }

.progreso { text-align: center; margin-top: 14px; font-size: 15px; }
.progreso b { color: var(--acento); }

.premio-banner {
  background: linear-gradient(90deg, var(--acento2), #ff6a5c);
  border-radius: 14px; padding: 14px; text-align: center; font-weight: 800;
  margin-top: 12px; animation: pulse 1.6s infinite;
}
@keyframes pulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.02)} }

/* Botones / inputs */
.btn {
  display: block; width: 100%; border: 0; border-radius: 14px;
  padding: 15px; font-size: 16px; font-weight: 800; cursor: pointer;
  background: var(--acento); color: #12204f; margin-top: 10px;
}
.btn.sec { background: transparent; color: var(--texto); border: 1px solid rgba(255,255,255,.25); }
.btn:active { transform: scale(.98); }
label { display: block; font-size: 13px; color: var(--tenue); margin: 12px 0 6px; }
input {
  width: 100%; padding: 14px; border-radius: 12px; border: 1px solid rgba(255,255,255,.15);
  background: rgba(0,0,0,.25); color: var(--texto); font-size: 16px;
}
input:focus { outline: 2px solid var(--acento); }

.stat-row { display: flex; gap: 10px; }
.stat { flex: 1; background: rgba(0,0,0,.2); border-radius: 12px; padding: 12px; text-align: center; }
.stat .n { font-size: 22px; font-weight: 900; color: var(--acento); }
.stat .l { font-size: 11px; color: var(--tenue); }

.qr-box { background: #fff; border-radius: 16px; padding: 16px; display: flex; justify-content: center; margin: 14px 0; }
.qr-box canvas, .qr-box img { display: block; }
.timer { text-align: center; font-weight: 800; color: var(--acento2); }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: #111; color: #fff; padding: 12px 18px; border-radius: 12px;
  font-size: 14px; box-shadow: 0 8px 24px rgba(0,0,0,.5); opacity: 0; pointer-events: none;
  transition: opacity .25s; z-index: 50; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; }
.toast.err { background: var(--acento2); }
.toast.ok { background: var(--ok); color: #05331f; }

.center { text-align: center; }
.big-emoji { font-size: 64px; margin: 10px 0; }
a.link { color: var(--acento); }
.foot { text-align: center; color: var(--tenue); font-size: 11px; margin-top: 18px; }

/* Spinner de carga */
.spinner {
  width: 42px; height: 42px; margin: 8px auto 14px;
  border: 4px solid rgba(255,210,30,.2); border-top-color: var(--acento);
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ¿Cómo funciona? */
details.comofunc { padding: 0; overflow: hidden; }
details.comofunc summary {
  list-style: none; cursor: pointer; padding: 16px 20px;
  font-weight: 800; color: var(--acento); font-size: 14px;
}
details.comofunc summary::-webkit-details-marker { display: none; }
details.comofunc[open] summary { border-bottom: 1px solid rgba(255,255,255,.08); }
details.comofunc ol { margin: 8px 0 6px; padding: 0 20px 14px 38px; color: var(--tenue); font-size: 14px; line-height: 1.5; }
details.comofunc li { margin: 6px 0; }
details.comofunc b { color: var(--texto); }

/* Overlay de escaneo */
.scan { position: fixed; inset: 0; background: #000; z-index: 100; display: flex; align-items: center; justify-content: center; }
.scan video { width: 100%; height: 100%; object-fit: cover; }
.scan-marco {
  position: absolute; width: 66vw; max-width: 300px; aspect-ratio: 1;
  border: 3px solid var(--acento); border-radius: 22px;
  box-shadow: 0 0 0 100vmax rgba(0,0,0,.45);
}
.scan-hint { position: absolute; bottom: 92px; left: 0; right: 0; text-align: center; color: #fff; font-weight: 700; text-shadow: 0 1px 4px #000; }
.scan-close { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); width: auto; padding: 12px 26px; background: rgba(0,0,0,.6); }

/* Contexto del cliente en la caja */
.ctel-info { font-size: 13px; min-height: 18px; margin: 6px 2px 0; }
.ctel-info.ok { color: var(--ok); }
.ctel-info.premio { color: var(--acento); font-weight: 700; }
.ctel-info.nuevo { color: var(--tenue); }