:root {
  --bg: #f5f6f8; --surface: #fff; --text: #16181d; --muted: #5f6673; --border: #dde1e7;
  --primary: #2156d9; --danger: #c62828; --ok: #1b7f3b; --warn: #a15c00;
  --paper-bg: #fff4d6; --paper-fg: #6b4a00; --live-bg: #c62828; --live-fg: #fff;
  --ok-bg: #e7f5ec; --warn-bg: #fff4e0; --bad-bg: #fdeaea;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --surface: #181b21; --text: #e8eaee; --muted: #9aa2af; --border: #2a2f38;
    --primary: #6f9bff; --danger: #ff6b6b; --ok: #5fd08a; --warn: #f0b35a;
    --paper-bg: #3a2e0a; --paper-fg: #ffd97a; --live-bg: #b71c1c; --live-fg: #fff;
    --ok-bg: #12291b; --warn-bg: #2f230e; --bad-bg: #331616;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
h1 { font-size: 1.4rem; margin: 0 0 1rem; }
h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 .75rem; }
.muted { color: var(--muted); }

.mode-banner { text-align: center; font-weight: 700; letter-spacing: .08em; padding: .6rem 16px; }
.mode-paper { background: var(--paper-bg); color: var(--paper-fg); }
.mode-live { background: var(--live-bg); color: var(--live-fg); }

.topbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .75rem 16px; max-width: 1200px; margin: 0 auto; }
.topbar form { display: flex; align-items: center; gap: .5rem; margin: 0; }

.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; padding: 0 16px 32px; max-width: 1200px; margin: 0 auto; }
.span-2 { grid-column: span 2; } .span-4 { grid-column: span 4; }
@media (max-width: 800px) { .grid { grid-template-columns: 1fr; } .span-2, .span-4 { grid-column: auto; } }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px; min-width: 0; }

.status-row { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; margin-bottom: 1rem; }
.status-pill { font-weight: 800; font-size: 1.25rem; padding: .3rem .8rem; border-radius: 999px; }
.status-paper { background: var(--paper-bg); color: var(--paper-fg); }
.status-live { background: var(--live-bg); color: var(--live-fg); }
.status-paused { background: var(--warn-bg); color: var(--warn); }
.status-emergency_stop { background: var(--danger); color: #fff; }

.controls { display: flex; gap: .5rem; flex-wrap: wrap; }
.btn { font: inherit; padding: .5rem .9rem; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-link { border: 0; background: none; color: var(--primary); padding: 0; }

.alert { padding: .5rem .75rem; border-radius: 8px; margin: 0 0 .5rem; list-style: none; }
.alert-ok { background: var(--ok-bg); color: var(--ok); }
.alert-warn { background: var(--warn-bg); color: var(--warn); }
.alert-bad { background: var(--bad-bg); color: var(--danger); }
.warnings { padding: 0; margin: 0 0 .75rem; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1rem; margin: 0; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; font-variant-numeric: tabular-nums; }
.kv-cols { grid-template-columns: repeat(auto-fill, minmax(150px, max-content) minmax(80px, 1fr)); }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: .75rem; }
.login-card label { display: flex; flex-direction: column; gap: .25rem; color: var(--muted); font-size: .9rem; }
.login-card input { font: inherit; padding: .55rem .7rem; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }

.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
table.data th { text-align: left; font-weight: 600; color: var(--muted); font-size: .8rem; border-bottom: 1px solid var(--border); padding: .4rem .5rem; white-space: nowrap; }
table.data td { padding: .5rem; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data .num { text-align: right; }
.pos { color: var(--ok); } .neg { color: var(--danger); }
.tag { font-size: .75rem; padding: .1rem .4rem; border-radius: 4px; }
.tag-warn { background: var(--warn-bg); color: var(--warn); }