:root {
    --bg: #0f1419;
    --panel: #1a212b;
    --panel-2: #222b38;
    --line: #2e3947;
    --text: #e6edf3;
    --muted: #8b97a6;
    --good: #2ea043;
    --warn: #d29922;
    --bad: #da3633;
    --accent: #2f81f7;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.5 "Segoe UI", Roboto, Arial, sans-serif;
}

/* ---------- top bar ---------- */
.topbar {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 12px 20px;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
}
.topbar .brand { font-weight: 700; color: var(--text); text-decoration: none; letter-spacing: .3px; }
.topbar nav a { color: var(--muted); text-decoration: none; margin-right: 14px; }
.topbar nav a:hover { color: var(--text); }
.topbar .spacer { flex: 1; }
.topbar .who { color: var(--muted); font-size: 13px; }
.topbar .role {
    display: inline-block; margin-left: 6px; padding: 1px 7px;
    border: 1px solid var(--line); border-radius: 10px;
    font-size: 11px; text-transform: uppercase; letter-spacing: .5px;
}
.inline { display: inline; }

main { padding: 22px; max-width: 1400px; margin: 0 auto; }

/* ---------- page head ---------- */
.page-head { display: flex; align-items: flex-start; gap: 20px; margin-bottom: 18px; }
.page-head h1 { margin: 0 0 4px; font-size: 22px; }
.page-head form { margin-left: auto; }

h1 { font-size: 22px; }
.muted { color: var(--muted); margin: 0; }
.small { font-size: 12px; }
.suspect { color: var(--warn); font-weight: 600; }

/* ---------- buttons ---------- */
.btn {
    padding: 9px 16px; border-radius: 6px; border: 1px solid var(--line);
    background: var(--panel-2); color: var(--text);
    font-size: 14px; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-plain { background: transparent; padding: 5px 10px; font-size: 13px; }
.btn.block { width: 100%; margin-top: 16px; }

/* ---------- cards / flash ---------- */
.card {
    background: var(--panel); border: 1px solid var(--line);
    border-radius: 8px; padding: 20px;
}
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 14px; font-size: 14px; }
.flash-error   { background: rgba(218,54,51,.15);  border: 1px solid var(--bad);  }
.flash-success { background: rgba(46,160,67,.15);  border: 1px solid var(--good); }
.flash-info    { background: rgba(47,129,247,.15); border: 1px solid var(--accent); }
.issues { margin: 8px 0; padding-left: 20px; }
.issues li { margin: 3px 0; }

/* ---------- login ---------- */
body.plain { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.centered { width: 100%; max-width: 380px; padding: 20px; }
.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card label { display: block; margin: 14px 0 5px; font-size: 13px; color: var(--muted); }
.login-card input {
    width: 100%; padding: 9px 11px; border-radius: 6px;
    border: 1px solid var(--line); background: var(--bg); color: var(--text);
}
.login-card input:focus { outline: none; border-color: var(--accent); }

/* ---------- machine grid ---------- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 12px;
}
.tile {
    background: var(--panel); border: 1px solid var(--line);
    border-left: 4px solid var(--line);
    border-radius: 8px; padding: 12px 14px;
}
.tile-good { border-left-color: var(--good); }
.tile-warn { border-left-color: var(--warn); }
.tile-bad  { border-left-color: var(--bad); }
.tile-none { border-left-color: var(--line); }
/* impossible readings: visually distinct from good/warn/bad so a misconfigured
   asset is never mistaken for a high performer */
.tile-suspect { border-left-color: #b06bd6; }
.tile-flag {
    margin-top: 6px; font-size: 10px; text-transform: uppercase; letter-spacing: .4px;
    color: #d9a6f0; border-top: 1px dashed var(--line); padding-top: 5px;
}

.tile-name { font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.tile-oee { font-size: 30px; font-weight: 700; line-height: 1.1; }
.tile-oee span { font-size: 15px; font-weight: 500; color: var(--muted); margin-left: 2px; }
.tile-metrics { display: flex; gap: 10px; font-size: 12px; color: var(--muted); margin-top: 6px; }
.tile-sub { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* tiles are links on the overview */
a.tile { display: block; color: inherit; text-decoration: none; transition: border-color .12s; }
a.tile:hover { border-color: var(--accent); }

/* ---------- machine detail ---------- */
.backlink { display: inline-block; margin-bottom: 14px; color: var(--muted); text-decoration: none; font-size: 13px; }
.backlink:hover { color: var(--text); }

.date-form { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.date-form select {
    padding: 8px 10px; border-radius: 6px;
    border: 1px solid var(--line); background: var(--panel-2); color: var(--text);
}

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-bottom: 16px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; }
.kpi-label { font-size: 12px; color: var(--muted); }
.kpi-value { font-size: 24px; font-weight: 700; margin-top: 2px; }
.kpi-value span { font-size: 14px; font-weight: 500; color: var(--muted); }

.card h2 { font-size: 15px; margin: 0 0 14px; }
.card + .card { margin-top: 16px; }

/* hourly bar chart, rendered server-side with no JS */
.chart { display: flex; align-items: flex-end; gap: 4px; height: 200px; }
.chart-col { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; min-width: 0; }
.chart-bar-wrap { height: 150px; display: flex; align-items: flex-end; }
.chart-bar { width: 100%; background: var(--accent); border-radius: 3px 3px 0 0; min-height: 2px; }
.chart-bar.nodata { background: var(--line); }
.chart-val { font-size: 10px; color: var(--muted); text-align: center; height: 14px; }
.chart-lbl { font-size: 10px; color: var(--muted); text-align: center; transform: rotate(-45deg); white-space: nowrap; }

/* pareto table */
.pareto { width: 100%; border-collapse: collapse; font-size: 13px; }
.pareto th {
    text-align: left; font-weight: 600; color: var(--muted); font-size: 12px;
    border-bottom: 1px solid var(--line); padding: 6px 10px 6px 0;
}
.pareto td { padding: 7px 10px 7px 0; border-bottom: 1px solid var(--line); }
.pareto td.num { text-align: right; white-space: nowrap; }
.pareto td.barcell { width: 34%; }
.hbar { height: 10px; border-radius: 3px; min-width: 2px; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 8px; }

.st-ef { background: var(--good); }
.st-bd { background: var(--bad); }
.st-st { background: #b06bd6; }
.st-ms { background: var(--warn); }
.st-sl { background: #d9822b; }
.st-rj { background: #e0574f; }
.st-rw { background: #c9803f; }
.st-pd { background: #4b83c4; }
.st-uu { background: #6b7684; }
.st-us { background: #4d5766; }
.st-na { background: #39424f; }

/* ---------- documentation page ---------- */
.doc { max-width: 900px; }
.doc h2 { font-size: 16px; margin: 0 0 12px; }
.doc h3 { font-size: 13px; margin: 18px 0 8px; color: var(--muted); font-weight: 600; }
.doc p { margin: 0 0 10px; }
.doc ul { margin: 0 0 10px; padding-left: 20px; }
.doc li { margin: 4px 0; }
.doc code {
    background: var(--bg); border: 1px solid var(--line); border-radius: 3px;
    padding: 1px 5px; font-size: 12px; font-family: Consolas, monospace;
}
.doc pre {
    background: var(--bg); border: 1px solid var(--line); border-radius: 6px;
    padding: 12px 14px; overflow-x: auto; margin: 0 0 12px;
}
.doc pre code { background: none; border: 0; padding: 0; font-size: 12px; line-height: 1.6; }

.doc-table { width: 100%; border-collapse: collapse; font-size: 13px; margin: 0 0 12px; }
.doc-table th {
    text-align: left; font-size: 12px; color: var(--muted); font-weight: 600;
    border-bottom: 1px solid var(--line); padding: 6px 12px 6px 0;
}
.doc-table td { padding: 7px 12px 7px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc-table td.ok    { color: #6fcf8b; white-space: nowrap; }
.doc-table td.empty { color: var(--muted); }

.doc .note, .doc .warn {
    border-left: 3px solid var(--accent); padding: 8px 12px; margin: 12px 0;
    background: rgba(47,129,247,.08); font-size: 13px; border-radius: 0 4px 4px 0;
}
.doc .warn { border-left-color: var(--warn); background: rgba(210,153,34,.1); }

/* ---------- tabs ---------- */
.tabs { display: flex; gap: 4px; margin-bottom: 14px; border-bottom: 1px solid var(--line); }
.tab {
    padding: 8px 14px; color: var(--muted); text-decoration: none; font-size: 13px;
    border-bottom: 2px solid transparent;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

/* ---------- work order table ---------- */
.wo-table { font-size: 12px; }
.wo-table code { font-size: 11px; padding: 1px 4px; }
.wo-table td { padding: 6px 10px 6px 0; }

.pill {
    display: inline-block; padding: 1px 7px; border-radius: 10px;
    font-size: 10px; text-transform: uppercase; letter-spacing: .3px; white-space: nowrap;
}
.pill.ok  { background: rgba(46,160,67,.18);  color: #6fcf8b; border: 1px solid rgba(46,160,67,.4); }
.pill.bad { background: rgba(218,54,51,.15);  color: #f08a86; border: 1px solid rgba(218,54,51,.4); }

/* per-exchange status lines on the API reference pages */
.doc .ok-note, .doc .bad-note {
    display: inline-block; padding: 4px 10px; border-radius: 4px;
    font-size: 12px; margin: 0 0 12px;
}
.doc .ok-note  { background: rgba(46,160,67,.15); border: 1px solid rgba(46,160,67,.45); color: #8fdca4; }
.doc .bad-note { background: rgba(218,54,51,.13); border: 1px solid rgba(218,54,51,.45); color: #f0a19d; }