:root {
  --ink: #111b2c;
  --muted: #5d6675;
  --line: #d8dde5;
  --paper: #f4f6f8;
  --surface: #ffffff;
  --navy: #132b4f;
  --violet: #6657d9;
  --red: #b3261e;
  font-family: "Aptos", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
}

* { box-sizing: border-box; }

html, body { min-height: 100%; margin: 0; }

body {
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(90deg, rgba(19, 43, 79, 0.045) 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(rgba(19, 43, 79, 0.045) 1px, transparent 1px) 0 0 / 56px 56px,
    var(--paper);
}

.login-card {
  width: min(420px, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(17, 27, 44, 0.14);
  padding: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.brand strong { display: block; font-size: 17px; color: var(--navy); }
.brand small { color: var(--muted); }

form { display: grid; gap: 14px; }

label { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }

input {
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
}

input:focus { outline: 2px solid var(--violet); outline-offset: 1px; }

button {
  font: inherit;
  font-weight: 600;
  padding: 11px 16px;
  border: 0;
  border-radius: 6px;
  background: var(--navy);
  color: #fff;
  cursor: pointer;
}

button:hover { background: #1b3a69; }

.login-error {
  background: #fdeceb;
  border: 1px solid #f2b8b5;
  color: var(--red);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 14px;
}

.note { color: var(--muted); font-size: 13px; margin-top: 18px; margin-bottom: 0; }