:root {
  --sidebar: #16334f;
  --sidebar-dark: #102438;
  --head: #2f6fb2;
  --head-dark: #275d95;
  --bg: #eef2f6;
  --card: #ffffff;
  --row-alt: #ddebf7;
  --text: #1d2b3a;
  --muted: #6b7a8c;
  --border: #d4dde6;
  --danger: #c92a2a;
  --radius: 6px;
  font-size: 15px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--head); text-decoration: none; }
a:hover { text-decoration: underline; }
h1,h2,h3 { margin: .4em 0; }
small, .muted { color: var(--muted); }
code { background: #eef2f6; padding: 1px 5px; border-radius: 4px; font-size: .85em; }

/* Layout */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: var(--sidebar); color: #dbe7f3; flex-shrink: 0; }
.brand { font-size: 1.35rem; font-weight: 700; color: #fff; padding: 18px 20px; background: var(--sidebar-dark); }
.sidebar nav { display: flex; flex-direction: column; padding-top: 8px; }
.nav-item { color: #cfe0f0; padding: 12px 20px; }
.nav-item:hover { background: rgba(255,255,255,.08); text-decoration: none; }
.nav-item.active { background: var(--sidebar-dark); color: #fff; font-weight: 600; }
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; background: #f7fafc; border-bottom: 1px solid var(--border); }
.topbar-user { display: flex; align-items: center; gap: 10px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--head); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; }
.content { padding: 20px 24px 60px; }

/* Buttons & Formulare */
.btn { border: 1px solid var(--border); background: #fff; color: var(--text); padding: 8px 14px; border-radius: var(--radius); cursor: pointer; font-size: .95rem; }
.btn:hover { filter: brightness(.96); }
.btn:disabled { opacity: .45; cursor: default; }
.btn-primary { background: var(--head); border-color: var(--head-dark); color: #fff; font-weight: 600; }
.btn-ghost { background: transparent; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; margin-top: 8px; }
input, select, textarea { padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius); font: inherit; background: #fff; width: 100%; }
input[type=checkbox] { width: auto; }
input[type=color] { padding: 2px; height: 38px; }
label { display: block; margin-bottom: 10px; font-weight: 600; }
label input, label select, label textarea { margin-top: 4px; font-weight: 400; }
.chk, .chk-row { font-weight: 400; display: flex; align-items: center; gap: 6px; }
.alert { background: #fdecea; color: var(--danger); border: 1px solid #f5c2c0; padding: 10px 14px; border-radius: var(--radius); margin: 10px 0; }
.hint { color: var(--muted); font-size: .85rem; }
.loading, .empty { color: var(--muted); text-align: center; padding: 24px; }

/* Karten */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 18px; overflow-x: auto; }
.form-card, .filter-card, .side-card { padding: 16px 20px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 18px; }
.form-grid .span2 { grid-column: 1 / -1; }

/* Tabs */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.tab { border: 1px solid var(--border); background: #fff; padding: 8px 14px; border-radius: var(--radius); cursor: pointer; font: inherit; }
.tab b { margin-left: 4px; }
.tab-active { background: var(--sidebar); color: #fff; border-color: var(--sidebar); }
.tab-green { border-color: #2f8a5b; color: #2f8a5b; }
.tab-yellow { border-color: #b28a2f; color: #8a6a1d; background: #fdf6df; }
.tab-red { border-color: var(--danger); color: var(--danger); }
.tab-active.tab-green, .tab-active.tab-yellow, .tab-active.tab-red { background: var(--sidebar); color: #fff; }

/* Ticket-Tabelle */
.ticket-table, .admin-table, .history-table { width: 100%; border-collapse: collapse; }
.ticket-table th, .admin-table th { background: var(--head); color: #fff; text-align: left; padding: 12px 10px; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; white-space: nowrap; }
.ticket-table td, .admin-table td { padding: 11px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.ticket-table tbody tr:nth-child(even) { background: var(--row-alt); }
.ticket-table tbody tr:hover { background: #cfe3f5; }
th.sortable { cursor: pointer; user-select: none; }
.sort-ind { opacity: .7; font-size: .75rem; margin-left: 2px; }
.tno { font-weight: 600; }
.prio-dot { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.star { background: none; border: none; cursor: pointer; font-size: 1.05rem; color: #c3cdd8; padding: 0 4px; }
.star-on { color: #f0a020; }
.list-footer { display: flex; justify-content: center; align-items: center; gap: 16px; margin: -6px 0 16px; color: var(--muted); font-weight: 600; }

/* Bulk & Filter */
.bulk-bar { padding: 12px 20px; display: flex; flex-direction: column; gap: 10px; align-items: flex-end; }
.bulk-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.bulk-row select, .bulk-row input { width: auto; min-width: 220px; }
.filter-links { margin-bottom: 8px; }
.status-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 6px 16px; margin-bottom: 14px; }
.status-grid .chk { font-weight: 600; }

/* Detail */
.backlink { display: inline-block; margin-bottom: 10px; font-weight: 600; }
.detail-grid { display: grid; grid-template-columns: 1fr 360px; gap: 18px; align-items: start; }
.detail-grid > .card:first-child { padding: 16px 20px; }
.detail-title { display: flex; align-items: center; gap: 8px; }
.detail-title h2 { margin: 0; flex: 1; }
.tno-badge { background: var(--sidebar); color: #fff; padding: 4px 10px; border-radius: 4px; font-weight: 700; white-space: nowrap; }
.desc { background: #f4f8fc; border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; margin: 10px 0; }
.comment { border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; margin-bottom: 10px; }
.comment-internal { background: #fdf6df; border-color: #e8d28a; }
.comment-head { font-size: .82rem; color: var(--muted); margin-bottom: 4px; }
.history-table td { padding: 6px 8px; border-bottom: 1px solid var(--border); font-size: .85rem; }
.perm-list code { display: inline-block; margin: 1px 2px; }
.perm-grid { display: grid; gap: 6px; margin: 12px 0; }
.color-swatch { display: inline-block; width: 16px; height: 16px; border-radius: 4px; vertical-align: -3px; border: 1px solid rgba(0,0,0,.15); }

/* Login & Installer */
.login-page, .install-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--sidebar); padding: 20px; }
.login-card, .install-card { background: #fff; border-radius: 10px; padding: 30px 34px; width: 100%; max-width: 420px; box-shadow: 0 14px 40px rgba(0,0,0,.35); }
.install-card { max-width: 520px; margin: 30px auto; }
.login-card h1, .install-card h1 { margin-top: 0; color: var(--sidebar); }

/* Toasts */
.toast { position: fixed; bottom: 22px; right: 22px; background: #1f7a45; color: #fff; padding: 12px 18px; border-radius: var(--radius); box-shadow: 0 6px 18px rgba(0,0,0,.25); z-index: 99; animation: fadein .15s ease-out; }
.toast-error { background: var(--danger); }
@keyframes fadein { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; } }

/* Responsive */
@media (max-width: 980px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; }
  .detail-grid, .form-grid { grid-template-columns: 1fr; }
}