:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080b10;
  color: #f5f7fa;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 15% 15%, rgba(255, 181, 71, .13), transparent 34rem),
    radial-gradient(circle at 90% 80%, rgba(61, 130, 246, .10), transparent 32rem),
    #080b10;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(100%, 430px);
  padding: 38px;
  border: 1px solid #242b35;
  border-radius: 22px;
  background: rgba(15, 19, 26, .96);
  box-shadow: 0 30px 90px rgba(0, 0, 0, .45);
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  border: 1px solid rgba(255, 181, 71, .45);
  border-radius: 12px;
  background: rgba(255, 181, 71, .09);
}

.brand-mark span {
  width: 15px;
  height: 15px;
  border: 3px solid #ffb547;
  border-radius: 50%;
}

.eyebrow {
  margin: 0 0 8px;
  color: #ffb547;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .16em;
}

h1 { margin: 0; font-size: 32px; letter-spacing: -.03em; }
.intro { margin: 10px 0 26px; color: #9ca8b8; line-height: 1.55; }
.error { min-height: 20px; margin: 0 0 8px; color: #ff7d88; font-size: 13px; }
label { display: block; margin: 15px 0 7px; color: #c7d0dc; font-size: 13px; font-weight: 700; }

input {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid #303846;
  border-radius: 10px;
  outline: none;
  background: #0a0e14;
  color: #fff;
  font: inherit;
}

input:focus { border-color: #ffb547; box-shadow: 0 0 0 3px rgba(255, 181, 71, .12); }

button {
  width: 100%;
  height: 48px;
  margin-top: 24px;
  border: 0;
  border-radius: 10px;
  background: #ffb547;
  color: #171006;
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

button:hover { background: #ffc363; }
small { display: block; margin-top: 22px; color: #697586; text-align: center; }

@media (max-width: 520px) {
  .login-card { padding: 28px 22px; border-radius: 18px; }
}