:root {
  --bg: #f6f7f8; --card: #fff; --line: #dcdfe3; --text: #1b1f24; --muted: #5d6673;
  --accent: #0b5d6b; --accent-ink: #fff; --ok: #1a7f37; --warn: #9a6700; --bad: #b42318; --soft: #eef1f4;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--text); background: var(--bg); }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 20px 0 8px; }
p { margin: 0 0 12px; }
a { color: var(--accent); }
code, pre, .mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; }
pre { background: #14181d; color: #e6edf3; padding: 14px; border-radius: 6px; overflow-x: auto; margin: 0 0 12px; white-space: pre-wrap; word-break: break-all; }
.loading { padding: 40px; text-align: center; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 13px; }

button, .btn { font: inherit; padding: 8px 14px; border-radius: 6px; border: 1px solid var(--line); background: #fff; color: var(--text); cursor: pointer; text-decoration: none; display: inline-block; }
button:hover, .btn:hover { border-color: #b3bac3; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.primary:hover { background: #094a55; }
button.danger { color: var(--bad); }
button.link { border: 0; background: none; padding: 0; color: var(--accent); text-decoration: underline; }
button:disabled { opacity: .55; cursor: default; }
input, select { font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; width: 100%; background: #fff; color: var(--text); }
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
label { display: block; font-weight: 600; font-size: 13px; margin: 12px 0 4px; }
.hint { font-weight: 400; color: var(--muted); font-size: 12px; margin-top: 3px; }
.row { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.row > .grow { flex: 1 1 220px; }
.actions { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.msg { padding: 10px 12px; border-radius: 6px; margin: 0 0 12px; font-size: 14px; }
.msg.err { background: #fdecea; color: var(--bad); border: 1px solid #f3c1bb; }
.msg.ok { background: #e8f5ec; color: var(--ok); border: 1px solid #b9dfc5; }
.msg.info { background: var(--soft); color: var(--text); border: 1px solid var(--line); }

/* Anmeldung */
.auth { max-width: 400px; margin: 8vh auto; padding: 0 16px; }
.auth .card { padding: 24px; }
.brand { font-weight: 700; font-size: 18px; letter-spacing: .2px; color: var(--accent); }
.auth .brand { display: block; margin-bottom: 16px; font-size: 22px; }
.auth .switch { margin-top: 16px; font-size: 14px; }

.auth.demo { max-width: 560px; margin-top: 5vh; }

/* Gerüst */
.top { background: #fff; border-bottom: 1px solid var(--line); padding: 10px 20px; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.top .spacer { flex: 1; }
.usage { min-width: 220px; font-size: 12px; color: var(--muted); }
.bar { height: 6px; background: var(--soft); border-radius: 3px; overflow: hidden; margin-top: 3px; }
.bar > span { display: block; height: 100%; background: var(--accent); }
.bar.full > span { background: var(--bad); }
.layout { display: flex; min-height: calc(100vh - 53px); }
.side { width: 240px; flex: none; background: #fff; border-right: 1px solid var(--line); padding: 16px 12px; }
.side h4 { margin: 0 8px 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); }
.side a { display: block; padding: 7px 8px; border-radius: 6px; color: var(--text); text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side a:hover { background: var(--soft); }
.side a.on { background: var(--soft); font-weight: 600; }
.side .sep { border-top: 1px solid var(--line); margin: 12px 0; }
.main { flex: 1; padding: 24px; min-width: 0; max-width: 1040px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 20px; margin-bottom: 16px; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin: 16px 0; flex-wrap: wrap; }
.tabs a { padding: 8px 14px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.on { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); padding: 6px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 8px; border-bottom: 1px solid var(--soft); vertical-align: top; }
.scroll { overflow-x: auto; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; background: var(--soft); color: var(--muted); margin: 0 4px 3px 0; white-space: nowrap; }
.badge.ok { background: #e8f5ec; color: var(--ok); }
.badge.warn { background: #fff4d6; color: var(--warn); }
.badge.bad { background: #fdecea; color: var(--bad); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; font-size: 14px; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-all; }
.item { border: 1px solid var(--line); border-radius: 8px; padding: 14px; margin-bottom: 10px; }
.item .head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 8px; }
.item .head .title { font-weight: 600; flex: 1; }
.stack { display: flex; height: 14px; border-radius: 4px; overflow: hidden; background: var(--soft); margin: 6px 0 8px; }
.stack span { display: block; height: 100%; }
.stack .s-sent { background: var(--ok); } .stack .s-pending { background: #c9a227; } .stack .s-failed { background: var(--bad); } .stack .s-skipped { background: #9aa3ae; }
.empty { color: var(--muted); padding: 16px 0; }

@media (max-width: 760px) {
  .layout { flex-direction: column; }
  .side { width: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .main { padding: 16px; }
}