:root {
  --bg: #f3f4f6;
  --panel: #ffffff;
  --line: #d8dce2;
  --line-strong: #c4cad3;
  --text: #2b3139;
  --heading: #14181d;
  --muted: #5d6876;
  --primary: #1f4e8c;
  --primary-dark: #173c6c;
  --danger: #b42318;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg); color: var(--text); font: 14px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
}
.shell {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 40px 16px;
}
.card {
  width: 100%; max-width: 400px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 6px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px rgba(16, 24, 40, .06);
  padding: 36px 36px 32px;
}
.logo { display: block; height: 28px; width: auto; margin-bottom: 28px; }
h1 { margin: 0; font-size: 20px; font-weight: 600; color: var(--heading); }
.lead { margin: 4px 0 24px; color: var(--muted); font-size: 13px; }
label { display: block; margin: 0 0 6px; font-size: 13px; font-weight: 500; color: var(--heading); }
input[type="text"], input[type="password"] {
  width: 100%; height: 40px; padding: 0 12px; margin: 0 0 16px;
  font: inherit; color: var(--heading); background: #fff;
  border: 1px solid var(--line-strong); border-radius: 4px;
}
input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(31, 78, 140, .22); }
.pw { position: relative; }
.pw input { padding-right: 64px; }
.reveal {
  position: absolute; right: 4px; top: 4px; height: 32px; padding: 0 10px;
  font: inherit; font-size: 12px; font-weight: 500; color: var(--muted);
  background: transparent; border: 0; border-radius: 3px; cursor: pointer;
}
.reveal:hover { color: var(--heading); background: #f3f4f6; }
.reveal:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(31, 78, 140, .22); }
.submit {
  width: 100%; height: 40px; margin-top: 8px;
  font: inherit; font-weight: 600; color: #fff; background: var(--primary);
  border: 0; border-radius: 4px; cursor: pointer;
}
.submit:hover:not(:disabled) { background: var(--primary-dark); }
.submit:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(31, 78, 140, .35); }
.submit:disabled { opacity: .7; cursor: progress; }
.alert {
  margin: 0 0 18px; padding: 10px 12px; font-size: 13px; border-radius: 4px; border: 1px solid;
}
.alert.error { color: #91190f; background: #fbeae8; border-color: #f1c6c1; }
.alert.info { color: var(--heading); background: #eef1f5; border-color: var(--line); }
.hidden { display: none; }
.foot { margin-top: 20px; max-width: 400px; text-align: center; color: var(--muted); font-size: 12px; }
.foot p { margin: 0 0 4px; }
.foot .org { color: #8a94a1; }