:root {
  --primary-dark: #12346b;
  --primary-light: #1e73be;
  --primary-soft: #eef5fc;
  --body-bg: #f4f4f4;
  --surface: #ffffff;
  --border: #e3e8ef;
  --border-strong: #d4dce6;
  --text: #1f2937;
  --muted: #667085;
  --danger: #b42318;
  --danger-bg: #fff1f0;
  --shadow: 0 12px 30px rgba(16, 24, 40, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--body-bg);
  color: var(--text);
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.hidden { display: none !important; }
.top-accent { height: 4px; background: linear-gradient(90deg, var(--primary-dark), var(--primary-light) 65%, #4a8eff); }
.container {
  max-width: 1120px;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 auto;
  padding: 0 24px;
}
.site-header { background: rgba(255, 255, 255, 0.98); border-bottom: 1px solid var(--border); }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  font-weight: 800; background: var(--primary-dark); color: white;
}
.brand-copy { line-height: 1.1; }
.brand-title { font-size: 15px; font-weight: 800; color: var(--primary-dark); }
.brand-sub { font-size: 11px; color: var(--muted); }
.main { display: grid; place-items: center; padding: 56px 20px; }
.login-card {
  width: min(460px, 100%);
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.eyebrow {
  margin-bottom: 8px;
  color: var(--primary-light);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
h1 { margin: 0 0 8px; color: var(--primary-dark); font-size: 30px; line-height: 1.2; }
.lead { margin: 0 0 24px; color: var(--muted); }
.login-form { display: grid; gap: 16px; }
.field { display: grid; gap: 8px; }
.field label { color: var(--muted); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.input {
  width: 100%; min-height: 42px; padding: 9px 12px; border: 1px solid var(--border-strong);
  border-radius: 8px; background: white; color: var(--text);
}
.input:focus { outline: 2px solid rgba(30, 115, 190, .18); border-color: var(--primary-light); }
.btn {
  min-height: 40px; padding: 0 14px; border: 1px solid transparent; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center; font-weight: 700; cursor: pointer;
}
.btn-primary { background: var(--primary-light); color: white; border-color: var(--primary-light); }
.btn-secondary { background: white; color: #344054; border-color: var(--border-strong); }
.form-error {
  margin: 0; padding: 10px 12px; border: 1px solid #efc7c1; border-radius: 8px;
  background: var(--danger-bg); color: var(--danger); font-size: 13px;
}
.notice-card {
  margin-top: 20px; padding: 12px; border: 1px solid var(--border);
  border-radius: 8px; background: #f8fafc; color: var(--muted); font-size: 12px;
}
.login-footer { margin: 20px 0 0; color: var(--muted); text-align: center; font-size: 13px; }
.login-footer a { color: var(--primary-light); font-weight: 700; }
@media (max-width: 560px) {
  .container { padding: 0 16px; }
  .login-card { padding: 24px 20px; }
  .brand-sub { display: none; }
}