:root { color-scheme: dark; --bg: #02030a; --ink: #e7edff; --muted: rgba(190, 204, 245, 0.6);
  --line: rgba(150, 175, 255, 0.16); --accent: #45c2f7; --accent-2: #93a0ff; --bad: #ff5d6c; --good: #3ee084;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, Inter, Cantarell,
    Ubuntu, "Noto Sans", sans-serif; }
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; font-family: var(--font);
  font-size: 14px; line-height: 1.45; color: var(--ink); -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(1.5px 1.5px at 12% 22%, rgba(159, 231, 255, 0.8), transparent 60%),
    radial-gradient(1px 1px at 27% 71%, rgba(147, 160, 255, 0.75), transparent 60%),
    radial-gradient(1.5px 1.5px at 44% 12%, rgba(231, 237, 255, 0.6), transparent 60%),
    radial-gradient(1px 1px at 63% 83%, rgba(159, 231, 255, 0.7), transparent 60%),
    radial-gradient(2px 2px at 78% 30%, rgba(69, 194, 247, 0.7), transparent 60%),
    radial-gradient(1px 1px at 88% 64%, rgba(231, 237, 255, 0.55), transparent 60%),
    radial-gradient(1.5px 1.5px at 7% 88%, rgba(182, 124, 255, 0.6), transparent 60%),
    radial-gradient(1px 1px at 93% 9%, rgba(159, 231, 255, 0.6), transparent 60%),
    radial-gradient(ellipse 70% 55% at 50% 40%, rgba(40, 70, 160, 0.34), transparent 70%),
    radial-gradient(ellipse 45% 35% at 72% 78%, rgba(120, 70, 220, 0.16), transparent 70%),
    var(--bg); }
.card { width: 100%; max-width: 380px; padding: 30px 28px 22px; border-radius: 18px;
  background: linear-gradient(180deg, rgba(20, 30, 64, 0.62), rgba(8, 12, 28, 0.74));
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 24px 70px rgba(0, 0, 0, 0.55), 0 0 60px rgba(69, 194, 247, 0.06);
  backdrop-filter: blur(16px) saturate(150%); -webkit-backdrop-filter: blur(16px) saturate(150%); }
.brand { display: flex; align-items: center; gap: 14px; margin-bottom: 22px; }
.brand .mark { filter: drop-shadow(0 0 10px rgba(69, 194, 247, 0.45)); flex: none; }
h1 { margin: 0; font-size: 24px; font-weight: 650; letter-spacing: 0.02em;
  background: linear-gradient(90deg, #e8f6ff, #9fe7ff 60%, #93a0ff); -webkit-background-clip: text; background-clip: text;
  color: transparent; }
.brand p { margin: 2px 0 0; color: var(--muted); font-size: 12.5px; letter-spacing: 0.04em; }
form { display: grid; gap: 6px; }
label { margin-top: 8px; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
input[type=text], input[type=password] { width: 100%; padding: 11px 12px; border-radius: 10px; font: inherit;
  color: var(--ink); background: rgba(3, 6, 18, 0.72); border: 1px solid rgba(150, 175, 255, 0.22); outline: none;
  transition: border-color 0.15s, box-shadow 0.15s; }
input[type=text]:focus, input[type=password]:focus { border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(69, 194, 247, 0.22), 0 0 18px rgba(69, 194, 247, 0.18); }
button { margin-top: 18px; padding: 11px 14px; border: 0; border-radius: 10px; font: inherit; font-weight: 600;
  letter-spacing: 0.02em; color: #02101c; cursor: pointer;
  background: linear-gradient(90deg, #45c2f7, #93a0ff); box-shadow: 0 8px 26px rgba(69, 194, 247, 0.28); }
button:hover { filter: brightness(1.08); }
button:focus-visible { outline: 2px solid #e8f6ff; outline-offset: 2px; }
.note { margin: 0 0 6px; padding: 9px 12px; border-radius: 10px; font-size: 13px; }
.note.err { color: #ffd9dd; background: rgba(255, 59, 78, 0.12); border: 1px solid rgba(255, 93, 108, 0.4); }
.note.ok { color: #d5ffe6; background: rgba(62, 224, 132, 0.1); border: 1px solid rgba(62, 224, 132, 0.35); }
.foot { margin: 20px 0 0; color: var(--muted); font-size: 11.5px; text-align: center; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }