:root {
  --yellow: #ffea00;
  --black: #000;
  --white: #fff;
  --error: #c0392b;
  --success: #1a8a3f;
  --glass-white: rgba(255, 255, 255, 0.62);
  --glass-border: rgba(255, 255, 255, 0.8);
  --radius-card: 28px;
  --radius-el: 18px;
  --radius-input: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--black);
  background: #fffbe6;
  background-image:
    radial-gradient(circle at 10% 10%, rgba(255,234,0,0.55), transparent 45%),
    radial-gradient(circle at 90% 90%, rgba(255,200,0,0.45), transparent 45%);
  min-height: 100vh;
}

.glass {
  background: var(--glass-white);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: var(--radius-el);
  box-shadow: 0 24px 64px rgba(0,0,0,0.08);
}

.layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  padding: 1.25rem;
  border-radius: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.brand { font-weight: 700; font-size: 1.1rem; margin-bottom: 0.5rem; }
.user { font-size: 0.85rem; opacity: 0.75; margin: 0 0 1rem; }

.nav-link {
  color: inherit;
  text-decoration: none;
  padding: 0.45rem 0.65rem;
  border-radius: 10px;
}
.nav-link:hover { background: rgba(255,234,0,0.35); }
.nav-link.external { margin-top: auto; }
.nav-link.logout { color: #666; font-size: 0.9rem; }

.content { padding: 1.5rem; max-width: 1400px; }

.card {
  padding: 1.5rem 1.75rem;
  border-radius: var(--radius-card);
}

.login-card { max-width: 420px; margin: 4rem auto; }

h1 { margin-top: 0; }
.lead { opacity: 0.85; }

label { display: block; margin-bottom: 0.85rem; }
input, textarea, select {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid rgba(0,0,0,0.15);
  border-radius: var(--radius-input);
  font: inherit;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1rem;
  border: 1px solid var(--black);
  border-radius: var(--radius-input);
  background: var(--white);
  cursor: pointer;
  font: inherit;
}
.btn.primary { background: var(--yellow); font-weight: 600; }

.actions { display: flex; gap: 0.75rem; margin-top: 1rem; }

.flash { padding: 0.75rem 1rem; border-radius: 12px; margin-bottom: 1rem; }
.flash-success { background: rgba(26,138,63,0.15); }
.flash-error { background: rgba(192,57,43,0.12); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}

.prompt-section { margin-bottom: 0.5rem; }
.prompt-section pre {
  white-space: pre-wrap;
  font: inherit;
  background: rgba(255,255,255,0.5);
  padding: 0.75rem;
  border-radius: 12px;
}

.testfaelle { padding-left: 1.2rem; }
.testfaelle li { margin-bottom: 0.75rem; }

.phase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
}
.phase-card {
  padding: 1rem;
  text-decoration: none;
  color: inherit;
}
.phase-num { display: block; font-size: 0.8rem; opacity: 0.7; }

.steps li { margin-bottom: 0.75rem; }
.hint { font-size: 0.9rem; opacity: 0.75; }

.checkbox { display: flex; align-items: center; gap: 0.5rem; }
.checkbox input { width: auto; margin: 0; }

fieldset { border: 1px solid rgba(0,0,0,0.1); border-radius: 12px; padding: 0.75rem 1rem; margin-bottom: 1rem; }
legend { padding: 0 0.35rem; font-weight: 600; }

.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { text-align: left; padding: 0.5rem; border-bottom: 1px solid rgba(0,0,0,0.08); }

@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; flex-wrap: wrap; }
  .split { grid-template-columns: 1fr; }
}