body {
  background:
    radial-gradient(circle at 15% 10%, rgba(28, 124, 116, 0.35), transparent 45%),
    radial-gradient(circle at 85% 90%, rgba(28, 124, 116, 0.2), transparent 50%),
    linear-gradient(160deg, #0b141b 0%, #12232e 55%, #16303c 100%);
  background-attachment: fixed;
}

@media (prefers-color-scheme: light) {
  body {
    background:
      radial-gradient(circle at 15% 10%, rgba(28, 124, 116, 0.14), transparent 45%),
      radial-gradient(circle at 85% 90%, rgba(28, 124, 116, 0.1), transparent 50%),
      linear-gradient(160deg, #eef2f5 0%, #f2f4f7 100%);
  }
}

.login-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 400px;
}

.login-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.login-mark {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(155deg, #17323f, #0d1b23);
  color: #4fd0c4;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px -10px rgba(0, 0, 0, 0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.login-brand-name {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: #f2f6f8;
  letter-spacing: 0.2px;
}

@media (prefers-color-scheme: light) {
  .login-brand-name { color: var(--text); }
}

.login-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 30px 28px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 24px 48px -20px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-title { margin: 0 0 2px 0; font-size: 17px; font-weight: 800; color: var(--navy); }
.login-sub { margin: 0; font-size: 13px; line-height: 1.6; color: var(--muted); }

.login-panel .btn { width: 100%; padding: 12px 18px; margin-top: 4px; }

.login-switch {
  margin: 20px 0 0 0;
  text-align: center;
  font-size: 13px;
  color: rgba(242, 246, 248, 0.75);
}

.login-switch a {
  color: #4fd0c4;
  font-weight: 700;
  text-decoration: none;
}

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

@media (prefers-color-scheme: light) {
  .login-switch { color: var(--muted); }
  .login-switch a { color: var(--teal); }
}

.login-footer {
  margin: 10px 0 0 0;
  text-align: center;
  font-size: 12px;
  color: rgba(242, 246, 248, 0.5);
}

@media (prefers-color-scheme: light) {
  .login-footer { color: var(--muted); }
}