:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface-1: #fcfcfb;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --border: rgba(11, 11, 11, 0.1);
  --pixel: #4a3aa7;
  --chip: #eb6834;
  --critical: #d03b3b;
  --ghost: rgba(11, 11, 11, 0.05);
  --blob-violet: rgba(74, 58, 167, 0.14);
  --blob-orange: rgba(235, 104, 52, 0.14);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface-1: #1a1a19;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --border: rgba(255, 255, 255, 0.1);
    --pixel: #9085e9;
    --chip: #d95926;
    --critical: #e66767;
    --ghost: rgba(255, 255, 255, 0.06);
    --blob-violet: rgba(144, 133, 233, 0.13);
    --blob-orange: rgba(217, 89, 38, 0.13);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--text-primary);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 16px;
}

.blob {
  position: fixed;
  width: 55vmax; height: 55vmax;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
}
.blob-violet { background: var(--blob-violet); top: -20vmax; left: -15vmax; }
.blob-orange { background: var(--blob-orange); bottom: -22vmax; right: -15vmax; }

.gate {
  position: relative;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 34px 36px 22px;
  width: min(94vw, 380px);
  text-align: center;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.12);
}

.cats { font-size: 44px; letter-spacing: 6px; line-height: 1; }
.cat { display: inline-block; }
.cat-1 { animation: bob 3.2s ease-in-out infinite; }
.cat-2 { animation: bob 3.2s ease-in-out 1.6s infinite; }
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

h1 { font-size: 26px; margin: 10px 0 2px; }
.tagline { color: var(--text-muted); font-size: 13.5px; margin: 0 0 22px; }

form { display: flex; flex-direction: column; gap: 12px; text-align: left; }
label span {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin: 0 0 4px 2px;
}
input {
  width: 100%;
  font: inherit;
  color: var(--text-primary);
  background: var(--page);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 12px;
  outline: none;
}
input:focus { border-color: var(--pixel); box-shadow: 0 0 0 3px color-mix(in srgb, var(--pixel) 20%, transparent); }

button {
  margin-top: 6px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(100deg, var(--pixel), var(--chip));
  border: none;
  border-radius: 10px;
  padding: 11px;
  cursor: pointer;
}
button:hover { filter: brightness(1.08); }
button:disabled { opacity: 0.7; cursor: default; }

.error { color: var(--critical); font-size: 13px; margin: 2px 2px 0; text-align: center; }

.paws {
  color: var(--text-muted);
  font-size: 13px;
  letter-spacing: 10px;
  opacity: 0.6;
  margin: 20px 0 0;
}

.shake { animation: shake 0.4s; }
@keyframes shake {
  20% { transform: translateX(-7px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
}

@media (prefers-reduced-motion: reduce) {
  .cat-1, .cat-2, .shake { animation: none; }
}