/* Simple, dense, operator-oriented UI.
   No framework — just hand-tuned CSS. */

:root {
  --bg: #0e1116;
  --bg-elev: #161b22;
  --bg-elev-2: #1f2630;
  --fg: #e7edf3;
  --fg-dim: #8a94a3;
  --border: #2a313c;
  --accent: #3ea6ff;
  --accent-hover: #65baff;
  --ok: #3fb950;
  --warn: #d29922;
  --danger: #f85149;
  --danger-hover: #ff6a62;
  --info: #58a6ff;
  --mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 13px;
  line-height: 1.45;
}

code { font-family: var(--mono); background: var(--bg-elev-2); padding: 1px 4px; border-radius: 3px; font-size: 12px; }
.muted { color: var(--fg-dim); }
.small { font-size: 12px; }
.hidden { display: none !important; }
.error { color: var(--danger); }
.row { display: flex; gap: 8px; align-items: center; }
.inline { display: inline-flex; align-items: center; gap: 6px; }

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
}
.topbar .brand { font-weight: 600; letter-spacing: 0.3px; }
.topbar .session { margin-left: auto; color: var(--fg-dim); font-family: var(--mono); font-size: 12px; }

.view { display: flex; gap: 0; height: calc(100vh - 45px); }
#view-login { justify-content: center; align-items: flex-start; padding-top: 60px; }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  width: 440px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.card h1 { margin: 0 0 4px; font-size: 18px; }
.card p { margin: 0 0 8px; }

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--fg-dim);
  font-size: 12px;
}
label.inline { flex-direction: row; align-items: center; gap: 6px; color: var(--fg); }

input[type="text"], input[type="password"], input[type="url"],
input[type="number"], input[type="search"], input[type="datetime-local"],
select {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 7px 9px;
  border-radius: 4px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent); }

button {
  font-family: inherit;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-elev-2);
  color: var(--fg);
  cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.primary { background: var(--accent); color: #001828; border-color: var(--accent); font-weight: 600; }
button.primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
button.ghost { background: transparent; }
button.danger { background: var(--danger); color: #fff; border-color: var(--danger); font-weight: 600; }
button.danger:hover:not(:disabled) { background: var(--danger-hover); border-color: var(--danger-hover); }

.panel-left {
  width: 320px;
  padding: 16px;
  border-right: 1px solid var(--border);
  background: var(--bg-elev);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.panel-left h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--fg-dim); margin: 12px 0 0; }
.panel-left h2:first-child { margin-top: 0; }

.panel-main {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}
.panel-main h2 { margin: 0; font-size: 15px; }
.fleet-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }

.selected-summary {
  background: var(--bg-elev-2);
  padding: 8px 10px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.fleet-table-wrap {
  flex: 1;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.fleet-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.fleet-table thead th {
  position: sticky;
  top: 0;
  background: var(--bg-elev);
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  z-index: 1;
}
.fleet-table tbody td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}
.fleet-table tbody tr:hover { background: var(--bg-elev-2); }
.fleet-table tbody tr.selected { background: rgba(62, 166, 255, 0.12); }

.status-ok    { color: var(--ok); }
.status-warn  { color: var(--warn); }
.status-err   { color: var(--danger); }
.status-info  { color: var(--info); }
.status-pending { color: var(--fg-dim); }

/* Compact FEC counter readout under the health pill in the preview
   table. Each line is "tail=value" so the operator can correlate with
   the same names used by the PON Manager UI (Pre-FEC BER etc.). */
.fec-cell { white-space: normal; max-width: 280px; }

/* Verify-view table cells contain stacked before/after blocks; let
   them wrap and align to the top so before/after lines line up. */
#verify-table tbody td { white-space: normal; vertical-align: top; }
#verify-table .delta-arrow { color: var(--fg-dim); font-size: 11px; }
#verify-table .before-line, #verify-table .after-line { display: block; }
#verify-table .before-line { color: var(--fg-dim); font-size: 11px; }
.fec-pill { font-weight: 600; }
.fec-counters {
  display: block;
  margin-top: 3px;
  color: var(--fg-dim);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.35;
}
.fec-counters .pre  { color: var(--warn); }
.fec-counters .post { color: var(--danger); }
.fec-counters .ok   { color: var(--fg-dim); }

.slot-arrow {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
}