/* Dashboard styling. No framework, no build step — one file, system fonts, and
   automatic light/dark so it is readable whatever the operator's machine prefers. */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #e3e6ea;
  --text: #16191d;
  --muted: #666e79;
  --accent: #1f7a4d;
  --accent-text: #ffffff;
  --ok: #1f7a4d;
  --warn: #9a6207;
  --danger: #b3261e;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.1);
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --border: #272d36;
    --text: #e7eaee;
    --muted: #98a1ad;
    --accent: #2ea36a;
    --accent-text: #06110b;
    --ok: #4ade80;
    --warn: #fbbf24;
    --danger: #f87171;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

/* Author rules beat the user-agent stylesheet regardless of specificity, so any
   `display` declared below would silently defeat the `hidden` attribute — `.gate`
   and `#app` both set one. Without this, hidden panels render anyway and the page
   lies about its state. Keep this rule first and keep the !important. */
[hidden] { display: none !important; }

body {
  margin: 0;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1 { font-size: 18px; margin: 0; }
h2 { font-size: 15px; margin: 0 0 4px; display: flex; align-items: center; gap: 8px; }
p { margin: 0; }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--danger); font-size: 13px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ---------------------------------------------------------------- token gate */
.gate {
  position: fixed; inset: 0; display: grid; place-items: center;
  background: var(--bg); z-index: 20; padding: 24px;
}
.gate-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; width: min(380px, 100%); box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 12px;
}
.gate-card h1 { margin-bottom: 2px; }

input[type="password"], select {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); color: var(--text); font: inherit; font-size: 14px;
}
input[type="password"]:focus-visible, select:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

button {
  padding: 9px 14px; border-radius: 8px; border: 1px solid transparent;
  font: inherit; font-size: 14px; font-weight: 500; cursor: pointer;
  background: var(--accent); color: var(--accent-text); white-space: nowrap;
}
button:hover:not(:disabled) { filter: brightness(1.07); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
button.ghost { background: transparent; color: var(--text); border-color: var(--border); }
button.link {
  background: none; border: none; color: var(--accent); padding: 2px 4px;
  text-decoration: underline; font-size: 13px;
}

/* ------------------------------------------------------------------- topbar */
#app { max-width: 1240px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.controls select { width: auto; min-width: 190px; }

.dot {
  width: 11px; height: 11px; border-radius: 50%; background: var(--muted);
  flex: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--muted) 22%, transparent);
}
.dot.online { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 22%, transparent); }
.dot.warn   { background: var(--warn); box-shadow: 0 0 0 3px color-mix(in srgb, var(--warn) 22%, transparent); }
.dot.offline{ background: var(--danger); box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 22%, transparent); }

/* ------------------------------------------------------------------- panels */
.panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow);
}
.panel-head {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; flex-wrap: wrap; margin-bottom: 10px;
}
.checkbox { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em; background: var(--bg); border: 1px solid var(--border);
  border-radius: 4px; padding: 1px 5px;
}

.banner { border-left: 3px solid var(--warn); font-size: 14px; }
.banner.error { border-left-color: var(--danger); }

.pairing { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; border-left: 3px solid var(--accent); }
.code {
  font: 600 30px/1.2 ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: 5px; margin: 10px 0 4px;
}

/* -------------------------------------------------------------------- tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.tile {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; display: flex; flex-direction: column; gap: 4px; box-shadow: var(--shadow);
}
.tile-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.tile-value { font-size: 26px; font-weight: 600; font-variant-numeric: tabular-nums; }
.tile.ok .tile-value { color: var(--ok); }
.tile.warn .tile-value { color: var(--warn); }

.issues { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 12px; }

/* ------------------------------------------------------------------- tables */
.table-wrap { overflow-x: auto; margin-top: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left; font-weight: 600; color: var(--muted); font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.04em;
  padding: 6px 10px 6px 0; border-bottom: 1px solid var(--border); white-space: nowrap;
}
td { padding: 7px 10px 7px 0; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
td.nowrap, th.nowrap { white-space: nowrap; }
td.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
tr.dim { opacity: 0.5; }

.pill {
  display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px;
  font-weight: 600; background: var(--border); color: var(--text);
}
.tag {
  display: inline-block; padding: 1px 7px; border-radius: 5px; font-size: 11px;
  font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em;
  border: 1px solid var(--border); white-space: nowrap;
}
.tag.ok       { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.tag.warn     { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.tag.danger   { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.tag.neutral  { color: var(--muted); }

/* -------------------------------------------------------------------- toast */
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 11px 18px; border-radius: 8px;
  font-size: 14px; z-index: 30; max-width: min(560px, 90vw); box-shadow: var(--shadow);
}
.toast.error { background: var(--danger); color: #fff; }

footer { padding: 4px 0 12px; font-size: 12px; }

@media (max-width: 640px) {
  body { padding: 14px; }
  .topbar { align-items: flex-start; }
  .controls { width: 100%; }
  .controls select, .controls button { flex: 1 1 auto; }
}

/* ------------------------------------------------------------------ settings */

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 12px;
}

.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field-wide { grid-column: 1 / -1; }

.field label { font-weight: 600; font-size: 0.9rem; }

.field input[type='text'],
.field select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  min-width: 0;
}

.field input:disabled, .field select:disabled { opacity: 0.55; cursor: not-allowed; }

.hint { margin: 0; color: var(--muted); font-size: 0.82rem; line-height: 1.35; }

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row input[type='text'] { flex: 1 1 220px; }

.settings-actions { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }

/* One real row from the sheet, so a column choice can be confirmed in place. */
.preview { margin-top: 16px; overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
.preview table { border-collapse: collapse; width: 100%; font-size: 0.85rem; }
.preview th, .preview td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
.preview th { color: var(--muted); font-weight: 600; }
.preview td { color: var(--text); }

.rule { border: 0; border-top: 1px solid var(--border); margin: 24px 0 16px; }

.danger-zone h3 { margin: 0 0 6px; font-size: 1rem; }
.danger-zone { border-left: 3px solid var(--danger); padding-left: 14px; }

button.danger {
  background: var(--danger);
  color: #fff;
  border: 1px solid var(--danger);
  padding: 8px 14px;
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
}
button.danger:disabled { opacity: 0.6; cursor: not-allowed; }
.field textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88rem;
  resize: vertical;
  min-width: 0;
}