*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #edeff3;
  --surface: #ffffff;
  --border: #e4e7ec;
  --border2: #cdd2db;
  --accent: #3b5bdb;
  --accent-light: #eceffb;
  --accent2: #16a34a;
  --accent2-light: #e7f6ec;
  --danger: #dc2626;
  --danger-light: #fdecea;
  --warn: #d97706;
  --warn-light: #fef3e2;
  --text: #101828;
  --text2: #475467;
  --text3: #98a2b3;
  --sidebar-bg: #ffffff;
  --shadow-card: 0 1px 3px rgba(16,24,40,.08), 0 1px 2px rgba(16,24,40,.04);
  --shadow-pop: 0 12px 32px rgba(16,24,40,.16);
  --nav-w: 220px;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body { font-family: var(--sans); background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; }

/* ── Layout ─────────────────────────────────────────────────────────── */
.app-layout { display: flex; min-height: 100vh; }
.sidebar { width: var(--nav-w); background: var(--sidebar-bg); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 100; }
.main-content { margin-left: var(--nav-w); flex: 1; display: flex; flex-direction: column; min-height: 100vh; }
.page-header { background: var(--surface); border-bottom: 1px solid var(--border); box-shadow: 0 1px 2px rgba(16,24,40,.04); padding: 16px 28px; display: flex; align-items: center; justify-content: space-between; }
.page-title { font-size: 18px; font-weight: 600; color: var(--text); }
.page-subtitle { font-size: 13px; color: var(--text3); margin-top: 2px; }
.page-body { padding: 24px 28px; flex: 1; }

/* ── Sidebar ─────────────────────────────────────────────────────────── */
.sidebar-logo { padding: 20px 20px 16px; border-bottom: 1px solid var(--border); }
.sidebar-logo .logo-name { font-size: 15px; font-weight: 700; color: #101828; letter-spacing: -.3px; }
.sidebar-logo .logo-sub { font-size: 11px; color: #667085; margin-top: 1px; }
.sidebar-nav { padding: 12px 0; flex: 1; overflow-y: auto; }
.nav-section { padding: 6px 16px 4px; font-size: 10px; font-weight: 600; color: #8a93a6; text-transform: uppercase; letter-spacing: .08em; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 9px 20px; color: #475467; text-decoration: none; font-size: 13px; font-weight: 500; transition: all .15s; border-left: 3px solid transparent; }
.nav-item:hover { background: #f3f5f8; color: #101828; }
.nav-item.active { background: var(--accent-light); color: var(--accent); border-left-color: var(--accent); }
.nav-item.active i { color: var(--accent); }
.nav-item i { font-size: 17px; flex-shrink: 0; }
.nav-badge { margin-left: auto; background: var(--accent); color: #fff; font-size: 10px; font-weight: 600; padding: 1px 6px; border-radius: 10px; }
.nav-badge.danger { background: var(--danger); }
.sidebar-user { padding: 14px 16px; border-top: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--accent-light); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; color: var(--accent); flex-shrink: 0; }
.user-name { font-size: 13px; font-weight: 500; color: #101828; }
.user-email { font-size: 11px; color: #98a2b3; }
.user-info { flex: 1; min-width: 0; }
.user-info .user-name, .user-info .user-email { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
a.logout-link { color: #98a2b3; font-size: 14px; text-decoration: none; padding: 4px; border-radius: 4px; }
a.logout-link:hover { color: var(--danger); }

/* ── Cards ─────────────────────────────────────────────────────────── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-card); }
.card-header { padding: 16px 20px 12px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-title { font-size: 14px; font-weight: 600; color: var(--text); }
.card-body { padding: 20px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-card); padding: 18px 20px; }
.stat-label { font-size: 12px; color: var(--text3); font-weight: 500; text-transform: uppercase; letter-spacing: .04em; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--text); margin-top: 4px; line-height: 1; }
.stat-sub { font-size: 12px; color: var(--text3); margin-top: 4px; }
.stat-icon { font-size: 24px; color: var(--text3); }

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 7px; font-size: 13px; font-weight: 500; cursor: pointer; border: 1px solid transparent; text-decoration: none; transition: all .15s; white-space: nowrap; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: #2f49b8; }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg); border-color: var(--border2); }
.btn-danger { background: var(--danger-light); color: var(--danger); border-color: #f5c6c2; }
.btn-danger:hover { background: #f5c6c2; }
.btn-success { background: var(--accent2); color: #fff; border-color: var(--accent2); }
.btn-success:hover { background: #137333; }
.btn-sm { padding: 5px 11px; font-size: 12px; }
.btn-icon { padding: 7px; }
.btn i { font-size: 15px; }

/* ── Forms ─────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; font-weight: 600; color: var(--text2); margin-bottom: 6px; }
.form-control { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 7px; font-size: 13px; color: var(--text); background: var(--surface); transition: border-color .15s; font-family: var(--sans); }
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(59,91,219,.16); }
.form-control::placeholder { color: var(--text3); }
.form-row { display: grid; gap: 16px; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-hint { font-size: 11px; color: var(--text3); margin-top: 4px; }
textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { cursor: pointer; }

/* ── Tables ─────────────────────────────────────────────────────────── */
.table-wrap { overflow: visible; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th { padding: 10px 16px; text-align: left; font-size: 11px; font-weight: 600; color: var(--text3); text-transform: uppercase; letter-spacing: .06em; border-bottom: 2px solid var(--border); background: var(--bg); white-space: nowrap; position: sticky; top: 0; z-index: 5; }
tbody td { padding: 11px 16px; border-bottom: 1px solid var(--border); color: var(--text); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f6f7f9; }
tbody tr.clickable { cursor: pointer; }

/* ── Badges ─────────────────────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 20px; white-space: nowrap; }
.badge-blue { background: var(--accent-light); color: var(--accent); }
.badge-green { background: var(--accent2-light); color: var(--accent2); }
.badge-red { background: var(--danger-light); color: var(--danger); }
.badge-warn { background: var(--warn-light); color: #92400e; }
.badge-gray { background: #f3f4f6; color: var(--text2); }
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ── Alerts ─────────────────────────────────────────────────────────── */
.alert { padding: 12px 16px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.alert-error { background: var(--danger-light); color: var(--danger); border: 1px solid #f5c6c2; }
.alert-success { background: var(--accent2-light); color: var(--accent2); border: 1px solid #b7dfbf; }
.alert-info { background: var(--accent-light); color: var(--accent); border: 1px solid #b8d4f7; }

/* ── Grid ─────────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ── Misc ─────────────────────────────────────────────────────────── */
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.text-muted { color: var(--text3); }
.text-sm { font-size: 12px; }
.mono { font-family: var(--mono); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--text3); }
.empty-state i { font-size: 48px; margin-bottom: 12px; display: block; opacity: .4; }
.empty-state h3 { font-size: 16px; font-weight: 600; color: var(--text2); margin-bottom: 6px; }
.empty-state p { font-size: 13px; margin-bottom: 20px; }
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.search-bar { display: flex; align-items: center; gap: 0; }
.search-bar input { border-right: none; border-radius: 7px 0 0 7px; }
.search-bar button { border-radius: 0 7px 7px 0; }
.tag { display: inline-block; background: var(--bg); border: 1px solid var(--border); color: var(--text2); font-size: 11px; padding: 2px 8px; border-radius: 4px; }

/* ── Responsive: Tablet ───────────────────────────────────────────────── */
@media (max-width: 900px) {
  .page-body { padding: 16px; }
  .page-header { padding: 14px 16px; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .form-row-3 { grid-template-columns: 1fr 1fr; }
  /* Aktionsbereiche im Kopf dürfen umbrechen */
  .page-header .flex-center { flex-wrap: wrap; }
  /* Breite Tabellen horizontal scrollbar statt das Layout zu sprengen */
  .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
}

/* ── Responsive: Handy ────────────────────────────────────────────────── */
@media (max-width: 600px) {
  body { font-size: 13px; }
  .page-body { padding: 12px; }
  /* Titel oben, Aktionen darunter (sonst quetscht es sich) */
  .page-header { padding: 12px 14px; flex-direction: column; align-items: stretch; gap: 10px; }
  .page-title { font-size: 16px; }
  .page-header .flex-center { flex-wrap: wrap; gap: 8px; }
  /* Alle Mehrspalten-Raster einspaltig */
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 12px; }
  .form-row-2, .form-row-3 { grid-template-columns: 1fr; }
  .card-body { padding: 14px; }
  .card-header { padding: 14px 16px 10px; }
  .stat-card { padding: 14px 16px; }
  .stat-value { font-size: 22px; }
  /* Tabellen kompakter; breite Tabellen scrollen horizontal im .table-wrap */
  .table-wrap { -webkit-overflow-scrolling: touch; }
  table { font-size: 12px; }
  thead th { padding: 8px 10px; }
  tbody td { padding: 9px 10px; }
  /* Größere Touch-Flächen */
  .btn { padding: 9px 14px; }
  .btn-sm { padding: 7px 11px; }
  /* Buttons in Aktionsleisten gleichmäßig breit, leichter zu treffen */
  .page-header .flex-center .btn { flex: 1 1 auto; justify-content: center; }
}