:root {
  /* Vitschi Brand (aus Logo abgeleitet) */
  --brand: #284e81;        /* dunkelblau */
  --brand-2: #2c7db5;      /* blau */
  --brand-soft: #a7cadf;   /* hellblau */
  --brand-text: #ffffff;

  /* UI */
  --sidebar-w: 260px;
  --topbar-h: 56px;
  --bg: #f6f7fb;
  --card: #ffffff;
  --border: #e6e8f0;
  --text: #111827;
  --muted: #6b7280;

  /* App-like Look */
  --radius: 16px;
  --shadow: 0 10px 28px rgba(17, 24, 39, 0.08);
}

* { box-sizing: border-box; }
body { margin:0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial; background: var(--bg); color: var(--text); }

.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas:
    "sidebar topbar"
    "sidebar main";
  min-height: 100vh;
}

.topbar {
  grid-area: topbar;
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(44,125,181,0.10), transparent);
  backdrop-filter: blur(6px);
}

.sidebar {
  grid-area: sidebar;
  padding: 12px;
  border-right: 1px solid rgba(255,255,255,0.12);
  background: linear-gradient(180deg, var(--brand), #1f3f68);
  color: var(--brand-text);
}

.main {
  grid-area: main;
  padding: 16px;
}

.topbar {
  grid-area: topbar;
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(44,125,181,0.10), transparent);
  backdrop-filter: blur(6px);
}

.nav {
  display:flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
}

.nav a {
  display:flex;
  gap: 10px;
  align-items: center;
  padding: 12px 12px;
  text-decoration: none;
  color: rgba(255,255,255,0.92);
  border-radius: 14px;
  font-weight: 600;
}
.nav a:hover { background: rgba(255,255,255,0.10); }

.nav a.active {
  background: rgba(255,255,255,0.18);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.14);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.row { display:flex; gap: 12px; flex-wrap: wrap; }

.btn {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  font-weight: 700;
  min-height: 44px; /* Touch target */
}

.btn.primary {
  background: var(--brand);
  color: white;
  border-color: var(--brand);
}
.btn.primary:hover { filter: brightness(1.05); }

/* ---------- Mobile / Off-canvas Sidebar ---------- */
.menu-btn {
  display: none;
  border: 1px solid rgba(0,0,0,0.08);
  background: white;
  border-radius: 12px;
  padding: 8px 10px;
  min-height: 40px;
  cursor: pointer;
}

.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(17,24,39,0.45);
  z-index: 80;
}

/* Breakpoint: ab hier wird Sidebar zum Drawer */
@media (max-width: 920px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: var(--topbar-h) 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }

  .menu-btn { display: inline-flex; align-items:center; gap:10px; }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: min(86vw, 320px);
    z-index: 90;
    transform: translateX(-105%);
    transition: transform 220ms ease;
    border-right: 0;
  }

  body.sidebar-open .sidebar { transform: translateX(0); }
  body.sidebar-open .overlay { display: block; }

  .main { padding: 14px; }
}