/* ------------------------------------------------------------------------
   Design tokens — "operator panel" concept: a dark steel enclosure, amber
   caution accent, LED-style status dots, and a single hazard-stripe
   treatment reserved for the one truly destructive action. Everything is
   set in one monospace face with tabular figures, flat, zero radius.
---------------------------------------------------------------------------*/
:root {
  --steel-950: #14171a;
  --steel-900: #1b1f23;
  --steel-800: #23282d;
  --steel-700: #2f363c;
  --line: #3a4149;
  --line-soft: #2a3036;

  --text: #e7e9ea;
  --text-dim: #aab3bb;
  --text-faint: #838d95;

  --amber: #e0942f;
  --amber-soft: rgba(224, 148, 47, 0.12);
  --amber-line: rgba(224, 148, 47, 0.45);

  --green: #5aa76a;
  --green-soft: rgba(90, 167, 106, 0.12);

  --red: #c9583f;
  --red-soft: rgba(201, 88, 63, 0.14);

  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--steel-950);
  color: var(--text);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
}

a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.wrap {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) var(--space-6);
}
.wrap--narrow { max-width: 480px; }

/* ---------------------------------------------------------- top bar --- */
.topbar {
  background: var(--steel-900);
  border-bottom: 2px solid var(--line);
}
.topbar__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.brand {
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 14px;
}
.logo-mark { color: var(--amber); vertical-align: -4px; margin-right: 8px; }
.brand__tag {
  color: var(--text-dim);
  font-size: 13px;
  margin-left: var(--space-2);
  letter-spacing: 0.03em;
}
.nav { display: flex; gap: var(--space-4); align-items: center; flex-wrap: wrap; }
.nav a { color: var(--text-dim); font-size: 13px; letter-spacing: 0.02em; padding-bottom: 2px; }
.nav a.active { color: var(--amber); border-bottom: 2px solid var(--amber); }
.nav a:hover { color: var(--text); text-decoration: none; }

/* --------------------------------------------------------- headings --- */
h1, h2, h3 { font-weight: 600; letter-spacing: 0.01em; margin: 0 0 var(--space-3); color: var(--text); }
h1 { font-size: 19px; text-transform: uppercase; letter-spacing: 0.03em; }
h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-dim); }

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 var(--space-1);
}

.section { margin-bottom: var(--space-6); }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
  border-bottom: 2px solid var(--line);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-3);
}

/* -------------------------------------------------------------- meta --- */
.stat-row { display: flex; gap: var(--space-5); flex-wrap: wrap; }
.stat { min-width: 120px; }
.stat__value { font-size: 26px; font-weight: 600; color: var(--text); }
.stat__label { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; }

/* --------------------------------------------------------- LED status -- */
.led {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: var(--space-2);
  vertical-align: middle;
  position: relative;
  top: -1px;
}
.led--on  { background: var(--green); box-shadow: 0 0 6px 1px rgba(90,167,106,0.65); }
.led--off { background: var(--red); box-shadow: 0 0 6px 1px rgba(201,88,63,0.55); }
.led--idle{ background: var(--text-faint); }

/* -------------------------------------------------------------- panel -- */
.panel {
  background: var(--steel-900);
  border: 1px solid var(--line);
  padding: var(--space-4);
}

/* -------------------------------------------------------------- forms --- */
label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-dim); margin-bottom: var(--space-1); }
input[type=text], input[type=password], input[type=number], input[type=file], select, textarea {
  font-family: var(--mono);
  font-size: 14px;
  background: var(--steel-950);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 10px 12px;
  width: 100%;
}
select[multiple] { padding: 6px; }
select[multiple] option { padding: 4px 6px; }
input:focus, select:focus, textarea:focus { border-color: var(--amber); }
input::placeholder { color: var(--text-faint); }
.field { margin-bottom: var(--space-3); }
.field-row { display: flex; gap: var(--space-3); align-items: end; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 180px; margin-bottom: 0; }
.hint { color: var(--text-faint); font-size: 13px; margin-top: var(--space-1); }

button, .btn {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid var(--amber);
  background: var(--amber);
  color: var(--steel-950);
  padding: 10px 16px;
  border-radius: 0;
  cursor: pointer;
  display: inline-block;
  font-weight: 600;
}
button:hover, .btn:hover { background: #f0a441; border-color: #f0a441; text-decoration: none; }

.btn--ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn--ghost:hover { background: var(--steel-800); border-color: var(--text-dim); color: var(--text); }

.btn--danger { background: var(--red); border-color: var(--red); color: var(--text); }
.btn--danger:hover { background: #e0684c; border-color: #e0684c; }

.btn--small { padding: 6px 10px; font-size: 12px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

form.inline { display: inline; }

/* -------------------------------------------------- hazard / destroy --- */
/* Signature element: the one genuinely irreversible action gets the one
   genuinely bold treatment - a repeating diagonal caution stripe, the way
   physical equipment marks a cut-off switch or a condemned panel. */
.hazard {
  border: 2px solid var(--red);
  background:
    repeating-linear-gradient(
      135deg,
      var(--red-soft),
      var(--red-soft) 10px,
      rgba(201,88,63,0.22) 10px,
      rgba(201,88,63,0.22) 20px
    );
  padding: var(--space-4);
}
.hazard h2 { color: var(--red); }
.hazard .hint { color: #d99b8a; }

/* -------------------------------------------------------------- table --- */
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  font-weight: 600;
  border-bottom: 2px solid var(--line);
  padding: var(--space-2) var(--space-2);
}
td {
  padding: var(--space-2);
  border-bottom: 1px solid var(--line-soft);
  /* top, not middle: several columns (the client picker, stacked quota
     forms) are taller than a single line, and middle-centering short
     columns against them floats things at inconsistent heights instead of
     lining up with the row's other top-anchored content. */
  vertical-align: top;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--steel-800); }
td.actions { text-align: right; white-space: nowrap; }
td.actions form, td.actions a { margin-left: var(--space-2); }
.mono-dim { color: var(--text-dim); font-size: 14px; }
.mono-faint { color: var(--text-faint); font-size: 13px; }

/* ------------------------------------------------------------- badges --- */
.tag {
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px 6px;
  border: 1px solid currentColor;
  display: inline-block;
}
.tag--ok { color: var(--green); background: var(--green-soft); }
.tag--off { color: var(--red); background: var(--red-soft); }
.tag--neutral { color: var(--text-dim); background: var(--steel-800); border-color: var(--line); }
.tag--amber { color: var(--amber); background: var(--amber-soft); border-color: var(--amber-line); }
.tag-row { display: flex; gap: 4px; flex-wrap: wrap; }

/* -------------------------------------------------------------- flash --- */
.flash { padding: var(--space-2) var(--space-3); border: 1px solid; margin-bottom: var(--space-4); font-size: 14px; }
.flash-success { border-color: var(--green); background: var(--green-soft); color: var(--green); }
.flash-error { border-color: var(--red); background: var(--red-soft); color: #e79b8a; }

/* ----------------------------------------------------- credential card - */
/* Access-card metaphor: a dark plate with amber corner brackets, values
   set in a recessed inset - printed once, meant to be handed off. */
.card {
  background: var(--steel-900);
  border: 1px solid var(--line);
  padding: var(--space-4);
  position: relative;
}
.card::before, .card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--amber);
}
.card::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.card::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }
.card__row { margin-bottom: var(--space-3); }
.card__row:last-child { margin-bottom: 0; }
.card__value {
  display: block;
  background: var(--steel-950);
  border: 1px solid var(--line);
  padding: var(--space-2);
  word-break: break-all;
  font-size: 13px;
  margin-top: var(--space-1);
  color: var(--amber);
}
.card__divider {
  border-top: 1px dashed var(--line);
  margin: var(--space-3) 0;
  text-align: center;
  position: relative;
}
.card__divider span {
  position: relative;
  top: -9px;
  background: var(--steel-900);
  padding: 0 var(--space-2);
  font-size: 10px;
  color: var(--text-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.warn-note { color: var(--red); font-size: 13px; margin-top: var(--space-3); }

/* --------------------------------------------------------------- gauge - */
.gauge {
  height: 6px;
  background: var(--steel-950);
  border: 1px solid var(--line);
  overflow: hidden;
  margin-top: var(--space-1);
}
.gauge__fill { height: 100%; background: var(--amber); }
.gauge__fill--full { background: var(--red); }

.usage-cell { display: flex; flex-direction: column; gap: var(--space-2); min-width: 200px; }
.usage-cell .gauge { margin-top: 0; }
.usage-cell__form { display: flex; gap: 6px; }
.usage-cell__form input[type=number] { width: 90px; padding: 6px 8px; font-size: 13px; }

/* -------------------------------------------------------------- modal --- */
/* First-visit onboarding overlay. */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 12, 14, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  z-index: 50;
}
/* The class above sets display:flex unconditionally, which otherwise beats
   the browser's very low-specificity default `[hidden] { display: none }` -
   without this, setting the `hidden` attribute from JS has no visible
   effect at all. */
.modal-overlay[hidden] { display: none; }
.modal-card {
  background: var(--steel-900);
  border: 1px solid var(--amber-line);
  max-width: 440px;
  width: 100%;
  padding: var(--space-4);
  position: relative;
}
.modal-card h2 { color: var(--amber); margin-bottom: var(--space-3); }
.modal-card ul { margin: 0 0 var(--space-3); padding-left: 20px; }
.modal-card li { margin-bottom: var(--space-2); color: var(--text); font-size: 14px; }
.modal-card .btn { margin-top: var(--space-2); }

/* -------------------------------------------------------- share form --- */
.share-form { display: flex; gap: 6px; align-items: center; }
.share-form select { width: auto; min-width: 140px; padding: 8px 10px; font-size: 13px; }

/* -------------------------------------------------------------- empty --- */
.empty { color: var(--text-faint); padding: var(--space-4) 0; font-size: 14px; }

/* --------------------------------------------------------------- misc --- */
.footer { color: var(--text-faint); font-size: 12px; margin-top: var(--space-6); border-top: 1px solid var(--line); padding-top: var(--space-3); }
.center-block { display: flex; align-items: center; justify-content: center; min-height: 60vh; }
.big-code { font-size: 60px; font-weight: 600; letter-spacing: 0.02em; color: var(--text); }
code { font-family: var(--mono); }

.plate {
  border: 1px solid var(--line);
  background: var(--steel-900);
  padding: var(--space-4) var(--space-5);
  text-align: center;
}

@media (max-width: 560px) {
  .stat-row { gap: var(--space-3); }
  td.actions form, td.actions a { display: block; margin: var(--space-1) 0 0 0; }
}