/* Sachkunde-App – Design-Tokens und Grundlayout (Sidebar links, Karten, Tabellen; mobil einspaltig) */
:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --line: #dde3ea;
  --text: #1c2430;
  --muted: #5d6b7c;
  --brand: #1769b7;
  --brand-weak: #e4effa;
  --ok: #1e7f4f;
  --ok-weak: #e1f4e9;
  --err: #b4322b;
  --err-weak: #fbe6e4;
  --warn: #9a6300;
  --warn-weak: #fff3d6;
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--brand); }
h1, h2, h3 { margin: 0 0 8px; line-height: 1.25; }
h1 { font-size: 24px; }
h2 { font-size: 17px; }
p { margin: 0 0 10px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }

.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: #17212e; color: #e6ecf3; display: flex; flex-direction: column; padding: 18px 14px; }
.sidebar-head { margin-bottom: 18px; }
.sidebar .brand { font-size: 18px; font-weight: 700; }
.sidebar .sub { color: #9fb0c3; font-size: 12px; }
.sidebar .user { color: #c6d2df; font-size: 13px; margin-top: 10px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-group { margin-bottom: 14px; }
.nav-group-title { color: #8ea0b5; font-size: 11px; letter-spacing: .06em; margin: 0 0 4px 10px; text-transform: uppercase; }
.nav-link { border-radius: 8px; color: #e6ecf3; display: block; padding: 7px 10px; text-decoration: none; }
.nav-link:hover { background: rgba(255,255,255,.08); }
.nav-link.active { background: var(--brand); color: #fff; font-weight: 600; }
.sidebar-logout { margin-top: auto; }
.sidebar-logout button { background: transparent; border: 1px solid #4a5a6e; border-radius: 8px; color: #e6ecf3; cursor: pointer; padding: 7px 12px; width: 100%; }

.main { padding: 26px 28px 40px; max-width: 1240px; width: 100%; }
.foot { color: var(--muted); font-size: 12px; margin-top: 30px; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.login-card { margin: 60px auto 0; max-width: 440px; }
.page-head { align-items: flex-start; display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; }
.page-head p { color: var(--muted); margin: 0; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.stat b { display: block; font-size: 26px; }
.stat span { color: var(--muted); font-size: 13px; }

.btn { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; color: var(--text); cursor: pointer; display: inline-block; font: inherit; padding: 8px 14px; text-decoration: none; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }
.btn.wide { display: block; text-align: center; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }

.badge { background: var(--brand-weak); border-radius: 999px; color: var(--brand); display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 9px; }
.badge.ok { background: var(--ok-weak); color: var(--ok); }
.badge.err { background: var(--err-weak); color: var(--err); }
.badge.warn { background: var(--warn-weak); color: var(--warn); }
.muted { color: var(--muted); }
.small { font-size: 13px; }

table { border-collapse: collapse; width: 100%; }
th, td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; }
.kv { display: grid; gap: 4px 12px; grid-template-columns: max-content 1fr; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

label { display: grid; font-size: 14px; font-weight: 600; gap: 4px; margin-bottom: 8px; }
input, select, textarea { border: 1px solid var(--line); border-radius: 8px; font: inherit; padding: 8px 10px; width: 100%; }
input[type="checkbox"], input[type="radio"] { width: auto; }
details summary { cursor: pointer; margin: 10px 0; }

.flash { border-radius: 8px; margin-bottom: 14px; padding: 10px 14px; }
.flash.success { background: var(--ok-weak); color: var(--ok); }
.flash.error { background: var(--err-weak); color: var(--err); }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { padding: 12px 14px; }
  .sidebar nav { display: flex; flex-wrap: wrap; gap: 6px; }
  .nav-group { display: contents; }
  .nav-group-title { display: none; }
  .sidebar-logout { margin-top: 10px; }
  .main { padding: 16px; }
  .grid-2 { grid-template-columns: 1fr; }
}