:root {
  --bg: #0f2744;
  --card: #ffffff;
  --accent: #1a6aa5;
  --text: #1c2430;
  --muted: #5b6775;
  --err: #b42318;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Segoe UI", "Liberation Sans", Arial, sans-serif;
  background: linear-gradient(165deg, #0c1f36 0%, #163a63 55%, #1d4f7a 100%);
  color: var(--text);
}
.wrap { max-width: 420px; margin: 8vh auto; padding: 0 16px 40px; }
header { margin-bottom: 20px; color: #e8f1fa; }
.brand { display: flex; gap: 12px; align-items: center; }
.logo {
  width: 40px; height: 40px; border-radius: 8px;
  background: conic-gradient(from 200deg, #7ec8e3, #1a6aa5, #0c1f36, #7ec8e3);
  box-shadow: 0 0 0 2px rgba(255,255,255,.15);
}
.brand span { display: block; font-size: 13px; opacity: .85; }
.brand strong { font-size: 15px; }
main {
  background: var(--card);
  border-radius: 12px;
  padding: 28px 24px 22px;
  box-shadow: 0 18px 40px rgba(0,0,0,.25);
}
h1 { font-size: 22px; margin: 0 0 8px; }
.lead, .hint { color: var(--muted); font-size: 14px; }
form { display: grid; gap: 8px; margin-top: 18px; }
label { font-size: 13px; font-weight: 600; }
input {
  border: 1px solid #cdd5de;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 15px;
}
input:focus { outline: 2px solid #8bb8d8; border-color: var(--accent); }
button {
  margin-top: 10px;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 11px 14px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}
button:hover { filter: brightness(1.05); }
.error { color: var(--err); font-weight: 600; }
a { color: var(--accent); }
footer { margin-top: 18px; color: #c5d4e4; font-size: 12px; text-align: center; }