/* 后台登录页：双栏专业布局 */
.admin-login-page {
  min-height: 100vh;
  display: flex;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  color: #0f172a;
  background: #f8fafc;
}

.admin-login-page *,
.admin-login-page *::before,
.admin-login-page *::after {
  box-sizing: border-box;
}

.admin-login-brand {
  flex: 1.05;
  position: relative;
  display: none;
  padding: 48px;
  color: #fff;
  background: linear-gradient(145deg, #1e3a8a 0%, #2563eb 42%, #0ea5e9 100%);
  overflow: hidden;
}

@media (min-width: 960px) {
  .admin-login-brand {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
}

.admin-login-brand::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.18), transparent 42%),
    radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.12), transparent 38%);
  pointer-events: none;
}

.admin-login-brand-inner {
  position: relative;
  z-index: 1;
  max-width: 420px;
}

.admin-login-brand-inner--minimal {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  max-width: none;
  text-align: center;
}

.admin-login-brand-inner--minimal h1 {
  font-size: 42px;
  letter-spacing: 0.06em;
}

@media (min-width: 960px) {
  .admin-login-brand {
    justify-content: center;
  }
}

.admin-login-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.admin-login-brand h1 {
  font-size: 34px;
  line-height: 1.2;
  font-weight: 700;
  margin: 0 0 16px;
}

.admin-login-brand p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
}

.admin-login-features {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 14px;
  margin-top: 40px;
}

.admin-login-feature {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(6px);
}

.admin-login-feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.16);
  font-size: 18px;
  flex-shrink: 0;
}

.admin-login-feature strong {
  display: block;
  font-size: 14px;
  margin-bottom: 4px;
}

.admin-login-feature span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.5;
}

.admin-login-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
}

.admin-login-shell {
  width: 100%;
  max-width: 420px;
}

.admin-login-mobile-brand {
  text-align: center;
  margin-bottom: 28px;
}

@media (min-width: 960px) {
  .admin-login-mobile-brand {
    display: none;
  }
}

.admin-login-mobile-brand h2 {
  font-size: 24px;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 8px;
}

.admin-login-mobile-brand p {
  margin: 0;
  color: #64748b;
  font-size: 14px;
}

.admin-login-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.04),
    0 16px 48px rgba(15, 23, 42, 0.08);
  padding: 32px 28px;
}

.admin-login-card-title {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 700;
  color: #0f172a;
}

.admin-login-card-subtitle:empty {
  display: none;
  margin: 0;
}

.admin-login-card-subtitle:not(:empty) {
  margin: 0 0 24px;
  color: #64748b;
  font-size: 14px;
  line-height: 1.5;
}

.admin-login-card-title:last-of-type,
.admin-login-card-subtitle:empty + .admin-login-messages,
.admin-login-card-subtitle:empty ~ form {
  /* 无副标题时标题下留白 */
}

.admin-login-card-subtitle:empty ~ *:first-child,
.admin-login-card:has(.admin-login-card-subtitle:empty) .admin-login-card-title {
  margin-bottom: 24px;
}

.admin-login-hint {
  color: #64748b;
  font-size: 13px;
  margin-bottom: 18px;
  line-height: 1.6;
}

.admin-login-hint a {
  color: #2563eb;
  font-weight: 600;
  text-decoration: none;
}

.admin-login-hint a:hover {
  text-decoration: underline;
}

.admin-login-field {
  margin-bottom: 18px;
}

.admin-login-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
  margin-bottom: 8px;
}

.admin-login-field input[type="text"],
.admin-login-field input[type="password"],
.admin-login-field input[type="number"] {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  background: #fff;
}

.admin-login-field input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.admin-login-error,
.admin-login-errorlist {
  list-style: none;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
  border-radius: 10px;
  padding: 12px 14px;
  margin: 0 0 18px;
  font-size: 13px;
}

.admin-login-errorlist li + li {
  margin-top: 4px;
}

.admin-login-btn-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.admin-login-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.admin-login-btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.28);
}

.admin-login-btn-primary:hover {
  filter: brightness(1.03);
}

.admin-login-btn-secondary {
  background: #fff;
  color: #334155;
  border-color: #cbd5e1;
}

.admin-login-btn-secondary:hover {
  background: #f8fafc;
}

.admin-login-btn-link {
  background: transparent;
  color: #64748b;
  border: none;
  min-height: auto;
  font-weight: 500;
}

.admin-login-divider {
  border-top: 1px solid #e2e8f0;
  margin: 22px 0 18px;
  padding-top: 18px;
}

.admin-login-device-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.admin-login-messages {
  margin-bottom: 18px;
}

.admin-login-messages .success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #166534;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
}

.admin-login-messages .error,
.admin-login-messages .warning {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
}

.admin-login-totp-qr-wrap {
  text-align: center;
  margin: 16px 0;
  padding: 14px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
}

.admin-login-totp-qr-image {
  display: inline-block;
  max-width: 220px;
  width: 100%;
  height: auto;
}

.admin-login-footer {
  margin-top: 24px;
  text-align: center;
  font-size: 12px;
  color: #94a3b8;
}