:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #fff;
  --text: #18202a;
  --muted: #697386;
  --line: #dce2ea;
  --accent: #176b87;
  --accent-strong: #0f5269;
  --danger: #b42318;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-panel {
  width: min(400px, 100%);
  padding: 30px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 38px rgba(31, 42, 55, 0.09);
}
.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}
h1 { margin: 0 0 26px; font-size: 28px; }
form { display: grid; gap: 10px; }
label { color: var(--muted); font-size: 13px; font-weight: 700; }
input {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
}
input:focus { outline: 2px solid rgba(23, 107, 135, 0.2); border-color: var(--accent); }
button {
  min-height: 44px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
button:hover { background: var(--accent-strong); }
button:disabled { opacity: 0.65; cursor: wait; }
.error { min-height: 20px; margin: 0; color: var(--danger); font-size: 13px; }