:root {
  --accent: #1769e0;
  --accent-dark: #0d4fb5;
  --ink: #172033;
  --muted: #667085;
  --line: #e3e8ef;
  --surface: #ffffff;
  --canvas: #f4f6f9;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--canvas); }
a { color: var(--accent); text-decoration: none; }
button, input, select, textarea { font: inherit; }
button {
  border: 0;
  border-radius: 8px;
  padding: 9px 16px;
  background: var(--accent);
  color: white;
  cursor: pointer;
}
button:hover { background: var(--accent-dark); }
button.quiet { background: #edf3fc; color: var(--accent-dark); }
input, select, textarea {
  border: 1px solid #cfd7e3;
  border-radius: 8px;
  padding: 9px 10px;
  background: white;
}
label { display: inline-flex; gap: 7px; align-items: center; }
form { display: inline-flex; gap: 8px; align-items: center; }
.stack-form { display: grid; gap: 16px; }
.stack-form label { display: grid; gap: 7px; }
.site-header {
  min-height: 64px;
  padding: 0 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header nav { display: flex; align-items: center; gap: 18px; }
.brand { color: var(--ink); font-size: 19px; font-weight: 700; }
.page-shell { max-width: 1440px; margin: 0 auto; padding: 32px 28px 56px; }
.hero { margin-bottom: 26px; }
.hero h1 { margin: 4px 0 8px; font-size: 30px; }
.eyebrow { margin: 0; color: var(--accent); font-weight: 700; letter-spacing: .08em; }
.muted, .login-note { color: var(--muted); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.module-card {
  min-height: 130px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 4px 18px rgba(17, 33, 54, .05);
  display: grid;
  gap: 10px;
  align-content: center;
}
.module-card:hover { border-color: #9dbef0; transform: translateY(-1px); }
.module-card strong { font-size: 18px; }
.module-card span { color: var(--muted); line-height: 1.6; }
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: linear-gradient(145deg, #eef5ff 0%, #f7f8fb 52%, #eef1f7 100%);
}
.login-card {
  width: min(420px, 100%);
  padding: 38px;
  border: 1px solid rgba(214, 223, 235, .9);
  border-radius: 18px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 22px 65px rgba(31, 50, 81, .12);
}
.login-card h1 { margin: 7px 0 8px; }
.login-card button { margin-top: 4px; padding-block: 11px; }
[role="alert"] { padding: 10px 12px; border-radius: 8px; background: #fff0f0; color: #b42318; }
.empty-state { padding: 22px; border: 1px dashed #c9d4e2; border-radius: 12px; }
table { width: 100%; margin-top: 20px; border-collapse: collapse; background: var(--surface); }
th, td { padding: 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #f1f5fa; white-space: nowrap; }
td form { margin: 3px 4px 3px 0; }

@media (max-width: 720px) {
  .site-header { padding: 12px 16px; align-items: flex-start; gap: 14px; }
  .site-header nav { flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
  .page-shell { padding: 24px 16px 40px; overflow-x: auto; }
  .login-card { padding: 28px 22px; }
  label { align-items: stretch; }
}