:root {
  --bg: #071321;
  --panel: #08111d;
  --text: #d5e6f7;
  --muted: #607892;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Segoe UI, system-ui, sans-serif;
}

.signin-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(circle at 10% 10%, rgba(0, 170, 255, 0.14), transparent 36%),
    radial-gradient(circle at 88% 88%, rgba(0, 255, 136, 0.12), transparent 34%),
    linear-gradient(180deg, #071321, #050d17);
}

.signin-panel {
  width: min(430px, 92vw);
  background: rgba(5, 18, 31, 0.96);
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.58);
}

.signin-brand {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #85b8dc;
  margin-bottom: 8px;
}

.signin-panel h1 {
  margin: 0;
  font-size: 24px;
  color: #e9f5ff;
}

.signin-sub {
  margin: 8px 0 14px;
  color: #92abc2;
  font-size: 12px;
}

.signin-form {
  display: grid;
  gap: 10px;
}

.signin-form label {
  display: grid;
  gap: 6px;
  color: #c5daec;
  font-size: 11px;
}

.signin-form input {
  border: 1px solid rgba(0, 255, 136, 0.24);
  background: rgba(3, 15, 27, 0.95);
  color: #e2f2ff;
  border-radius: 8px;
  padding: 9px 10px;
  font-size: 13px;
}

.signin-form button {
  margin-top: 4px;
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: 8px;
  background: rgba(0, 255, 136, 0.12);
  color: #d8ebff;
  padding: 9px 12px;
  cursor: pointer;
  font-weight: 700;
}

.signin-form button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.signin-status {
  min-height: 18px;
  margin: 10px 0 0;
  color: #91b0c9;
  font-size: 11px;
}

.signin-status.error {
  color: #ff8f8f;
}