:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #111827;
  color: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

.login-page {
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, #1f2937, #030712 70%);
}

.login-box {
  width: min(92vw, 380px);
  padding: 28px;
  border: 1px solid #334155;
  border-radius: 8px;
  background: #0f172a;
  box-shadow: 0 24px 80px rgb(0 0 0 / 35%);
}

h1 {
  margin: 0 0 22px;
  font-size: 1.5rem;
  line-height: 1.2;
}

form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  color: #cbd5e1;
  font-size: 0.95rem;
}

input {
  width: 100%;
  border: 1px solid #475569;
  border-radius: 6px;
  padding: 12px 13px;
  background: #020617;
  color: #f8fafc;
  font: inherit;
}

button {
  border: 0;
  border-radius: 6px;
  padding: 11px 16px;
  background: #38bdf8;
  color: #082f49;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

#message {
  min-height: 1.3em;
  margin: 0;
  color: #fca5a5;
}

.app-page {
  display: grid;
  grid-template-rows: 48px 1fr;
  height: 100vh;
  overflow: hidden;
  background: #020617;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 14px;
  border-bottom: 1px solid #1e293b;
  background: #0f172a;
}

.toolbar button {
  padding: 8px 12px;
  background: #1e293b;
  color: #f8fafc;
}

iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Einheitliches Erscheinungsbild für die Anmeldung. */
:root { background:#10131a; color:#f0f3f9; }
.login-page { padding:24px 16px; min-height:100dvh; background:radial-gradient(ellipse at 50% 0%,#1d3034 0,#10131a 65%); }
.login-box { width:min(100%,420px); padding:32px; border-color:#303847; border-radius:24px; background:#191e29; box-shadow:0 24px 64px #0003; }
.login-mark { width:48px; height:48px; display:grid; place-items:center; background:#8be0c4; color:#132c24; font-size:26px; font-weight:800; border-radius:14px; margin-bottom:24px; }
.login-box h1 { font-size:27px; letter-spacing:-.6px; margin-bottom:12px; }
.login-subtitle { color:#a4afc2; line-height:1.6; margin:0 0 26px; }
input { min-height:48px; font-size:16px; border-radius:10px; background:#11151d; border-color:#394356; }
button { min-height:48px; border-radius:10px; background:#8be0c4; color:#132c24; }
input:focus-visible, button:focus-visible { outline:3px solid #8be0c4; outline-offset:3px; }
.login-foot { color:#a4afc2; font-size:13px; line-height:1.6; margin:20px 0 0; }
@media(max-width:420px) { .login-box {padding:26px 22px;} }