/* One stylesheet, no framework, no CDN. The CSP forbids inline styles and remote hosts. */
:root {
  --ink: #14181f;
  --muted: #5b6472;
  --line: #e3e7ec;
  --accent: #146c43;
  --bg: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8ecf1;
    --muted: #9aa4b2;
    --line: #2a313b;
    --accent: #4ade80;
    --bg: #12151a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header, footer, main { max-width: 44rem; margin: 0 auto; padding: 1.5rem 1.25rem; }

header { border-bottom: 1px solid var(--line); padding-bottom: 1rem; }

.brand { color: var(--ink); font-weight: 650; letter-spacing: -0.01em; text-decoration: none; }

main.narrow { max-width: 32rem; }

h1 { font-size: 1.6rem; letter-spacing: -0.02em; margin: 1.5rem 0 0.75rem; }

.lede { color: var(--muted); font-size: 1.05rem; }

.points { padding-left: 1.1rem; }
.points li { margin: 0.4rem 0; }

.hint, .stores { color: var(--muted); font-size: 0.9rem; }

.error {
  background: rgba(220, 38, 38, 0.1);
  border-left: 3px solid #dc2626;
  padding: 0.6rem 0.8rem;
}

label { display: block; font-weight: 600; margin-bottom: 0.35rem; }

input[type="password"] {
  width: 100%;
  padding: 0.6rem 0.7rem;
  font-size: 1rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
}

button {
  margin-top: 1rem;
  padding: 0.65rem 1.1rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  gap: 1rem;
}

footer a { color: var(--muted); }