:root {
  color-scheme: dark;
  --bg: #0b0e14;
  --panel: #141923;
  --border: #2b3445;
  --text: #eef2f8;
  --muted: #9ba8ba;
  --accent: #79e2b5;
  --danger: #ff8e9e;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: radial-gradient(circle at 50% 0%, #172439 0, var(--bg) 55%);
  font:
    16px/1.5 Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    sans-serif;
}
.login-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(100%, 430px);
  padding: 42px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  box-shadow: 0 24px 80px #0008;
}
.brand-mark {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 14px;
  color: #0b1814;
  background: var(--accent);
  font-weight: 900;
  letter-spacing: 0.08em;
}
.eyebrow {
  margin: 18px 0 8px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
}
h1 {
  margin: 0;
  font-size: 32px;
}
.copy,
.hint {
  color: var(--muted);
}
.copy {
  margin: 12px 0 28px;
}
form {
  display: grid;
  gap: 10px;
}
label {
  color: var(--muted);
  font-size: 13px;
}
input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  background: #0e131c;
  font: inherit;
}
input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.primary-btn {
  margin-top: 8px;
  padding: 12px 16px;
  border: 0;
  border-radius: 10px;
  color: #08130f;
  background: var(--accent);
  font-weight: 800;
  cursor: pointer;
}
.primary-btn:disabled {
  cursor: wait;
  opacity: 0.6;
}
.error {
  color: var(--danger);
}
.hint {
  margin: 24px 0 0;
  font-size: 12px;
}
@media (max-width: 520px) {
  .login-card {
    padding: 28px 22px;
  }
}