:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080b12;
  color: #f3f5fb;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(72, 119, 255, .2), transparent 52%),
    linear-gradient(155deg, #121a2a 0%, #080b12 66%);
}

.card {
  width: min(100%, 460px);
  padding: 40px;
  border: 1px solid #29354a;
  border-radius: 20px;
  background: rgba(15, 22, 35, .97);
  box-shadow: 0 30px 100px rgba(0, 0, 0, .48);
}

.landing-card { text-align: center; }
.eyebrow {
  margin-bottom: 18px;
  color: #96b2ff;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .17em;
}

.shield {
  width: 66px;
  height: 66px;
  display: grid;
  place-items: center;
  margin: 26px auto;
  border: 1px solid #34486f;
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(78, 117, 245, .22), rgba(21, 33, 57, .4));
  color: #9ab4ff;
  font-size: 26px;
}

h1 {
  margin: 0;
  font-size: clamp(27px, 6vw, 34px);
  line-height: 1.14;
  letter-spacing: -.04em;
}

.notice {
  margin: 18px 0 28px;
  color: #c0cada;
  font-size: 15px;
  line-height: 1.65;
}

.auth-card h1 { font-size: clamp(28px, 6vw, 32px); }
.intro {
  margin: 12px 0 24px;
  color: #aeb9cc;
  line-height: 1.55;
}

.message {
  min-height: 22px;
  margin: 0 0 12px;
  color: #ff9c9c;
  font-size: 14px;
}

.back-link {
  display: inline-block;
  margin-bottom: 28px;
  color: #a9b7ce;
  font-size: 13px;
  text-decoration: none;
}
.back-link:hover { color: #fff; }

form { display: grid; gap: 10px; }
label {
  margin-top: 9px;
  color: #d8e0ed;
  font-size: 13px;
  font-weight: 650;
}

input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid #344158;
  border-radius: 9px;
  outline: none;
  background: #0b111c;
  color: #f2f5fb;
  font: inherit;
}
input:focus {
  border-color: #7195ff;
  box-shadow: 0 0 0 3px rgba(91, 130, 255, .18);
}

.button, button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 14px;
  padding: 0 22px;
  border: 0;
  border-radius: 10px;
  background: #4e75f5;
  color: #fff;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background .16s ease, transform .16s ease;
}
.button { min-width: 180px; }
.button:hover, button:hover {
  transform: translateY(-1px);
  background: #6285ff;
}
button:focus-visible, .button:focus-visible {
  outline: 3px solid #a6bbff;
  outline-offset: 3px;
}

.footnote {
  margin: 24px 0 0;
  color: #7f8ba0;
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}

@media (max-width: 480px) {
  .card { padding: 30px 23px; }
}