:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #090d12;
  --surface: #111820;
  --line: #263342;
  --text: #edf3f8;
  --muted: #8fa0b2;
  --green: #53e0a1;
  --red: #ff7d82;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -10%, rgba(62, 126, 155, 0.24), transparent 34rem),
    radial-gradient(circle at 90% 10%, rgba(65, 145, 112, 0.14), transparent 28rem),
    var(--bg);
}
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: min(440px, 100%);
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(17, 24, 32, 0.94);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
}
.eyebrow { margin: 0 0 9px; color: var(--green); font-size: 11px; font-weight: 800; letter-spacing: 0.16em; }
h1 { margin: 0; font-size: 30px; letter-spacing: -0.035em; }
.subtitle { margin: 10px 0 26px; color: var(--muted); font-size: 14px; }
form { display: grid; gap: 16px; }
label { display: grid; gap: 7px; }
label span { color: var(--muted); font-size: 12px; font-weight: 700; }
input {
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 0 13px;
  color: var(--text);
  background: var(--bg);
  font: inherit;
  outline: none;
}
input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(83, 224, 161, 0.12); }
button {
  min-height: 46px;
  margin-top: 4px;
  border: 0;
  border-radius: 999px;
  color: #07120d;
  background: var(--green);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
button:disabled { cursor: wait; opacity: 0.55; }
.message { min-height: 20px; margin: 15px 0 0; color: var(--red); font-size: 12px; }