/* 登录/注册仅改变展示；表单提交、CSRF 与审批流程沿用原实现。 */
.auth-page {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
}
.auth-layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 440px);
  width: 100%;
  max-width: 780px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow-lg);
}
.auth-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 44px 25px 32px;
  background: var(--sidebar-bg);
  color: var(--brand-metal);
}
.auth-wordmark { display: flex; align-items: center; gap: 13px; }
.auth-wordmark span, .auth-wordmark svg { display: block; width: 44px; height: 44px; }
.auth-wordmark b {
  font-family: "Songti SC", "Noto Serif CJK SC", serif;
  color: #fff;
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 0.16em;
}
.auth-ornament { width: 226px; max-width: 100%; margin: 35px 0; opacity: 0.8; }
.auth-brand-copy { color: var(--sidebar-text); font-size: 12px; line-height: 1.6; text-align: center; }
.login-card { min-width: 0; padding: 48px 38px 38px; align-self: center; }
.login-card h1 { margin: 0 0 8px; font-size: 20px; line-height: 1.5; font-weight: 650; }
.login-card .sub { color: var(--text-soft); font-size: 13px; margin-bottom: 28px; line-height: 1.6; }
.login-card label { display: block; margin-bottom: 7px; font-size: 12px; font-weight: 600; }
.login-card input:not([type="hidden"]) { width: 100%; height: 44px; margin-bottom: 18px; font-size: 15px; }
.login-card button {
  width: 100%;
  min-height: 44px;
  margin-top: 4px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.login-card button:hover { background: var(--primary-hover); }
.login-card .error { color: var(--bad); font-size: 13px; line-height: 1.6; margin-bottom: 12px; }
.login-card .error:empty { margin-bottom: 0; }
.login-card .switch { border-top: 1px solid var(--border); margin-top: 26px; padding-top: 18px; font-size: 13px; }
.login-card .switch a { color: var(--primary); text-decoration: none; cursor: pointer; }
.login-card .switch a:hover { text-decoration: underline; }
@media (max-width: 640px) {
  .auth-page { padding: 20px 16px; }
  .auth-layout { grid-template-columns: minmax(0, 1fr); max-width: 440px; }
  .auth-brand { padding: 22px; gap: 14px; }
  .auth-wordmark b { font-size: 26px; }
  .auth-ornament { display: none; }
  .login-card { padding: 28px 24px; }
  .login-card h1 { font-size: 18px; }
  .login-card input:not([type="hidden"]) { font-size: 16px; }
}