:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #07111f;
  color: #eef5ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 20% 10%, rgba(29, 112, 214, .26), transparent 34%),
    radial-gradient(circle at 80% 90%, rgba(24, 162, 126, .18), transparent 30%),
    #07111f;
}

.auth-shell { width: min(100%, 460px); }
.brand { display: flex; align-items: center; gap: 12px; margin: 0 0 20px; }
.brand-mark { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; font-weight: 800; background: linear-gradient(135deg, #3d8cff, #1e61d0); box-shadow: 0 14px 40px rgba(35, 109, 222, .35); }
.brand strong, .brand span { display: block; }
.brand span { margin-top: 3px; font-size: 13px; color: #92a7c3; }
.auth-card { padding: 30px; border: 1px solid #1e3452; border-radius: 22px; background: rgba(11, 25, 43, .94); box-shadow: 0 28px 80px rgba(0, 0, 0, .36); }
.eyebrow { margin: 0 0 10px; color: #61a3ff; font-weight: 800; font-size: 11px; letter-spacing: .14em; }
h1 { margin: 0; font-size: clamp(25px, 6vw, 34px); line-height: 1.1; }
.intro { margin: 14px 0 24px; color: #a9bad0; line-height: 1.55; }
label { display: grid; gap: 7px; margin-top: 15px; color: #d7e4f5; font-size: 13px; font-weight: 700; }
input { width: 100%; border: 1px solid #2a466a; border-radius: 11px; padding: 13px 14px; color: #f6f9ff; background: #081525; outline: none; font: inherit; }
input:focus { border-color: #4f99ff; box-shadow: 0 0 0 3px rgba(79, 153, 255, .13); }
.hint { display: block; margin-top: 8px; color: #8095b0; font-size: 12px; line-height: 1.4; }
.submit { width: 100%; margin-top: 22px; border: 0; border-radius: 12px; padding: 14px; color: white; background: linear-gradient(135deg, #2e85ff, #1a62d4); font: inherit; font-weight: 800; cursor: pointer; }
.submit:disabled { opacity: .55; cursor: wait; }
.status { min-height: 21px; margin: 14px 0 0; color: #ff9f9f; font-size: 13px; line-height: 1.45; }
.security { display: flex; gap: 9px; align-items: flex-start; margin-top: 20px; padding: 12px 14px; border: 1px solid #214166; border-radius: 12px; background: rgba(31, 77, 126, .18); color: #a9c5e8; font-size: 12px; line-height: 1.45; }
.security i { width: 8px; height: 8px; border-radius: 50%; margin-top: 4px; flex: 0 0 auto; background: #3fd49c; box-shadow: 0 0 0 4px rgba(63, 212, 156, .1); }

@media (max-width: 520px) {
  body { padding: 15px; align-items: start; }
  .auth-shell { margin-top: 6vh; }
  .auth-card { padding: 23px 20px; }
}