:root {
  --bg: #131418;
  --surface: #1b1d23;
  --surface2: #22252d;
  --edge: #2c303a;
  --text: #e9eaee;
  --muted: #8a909c;
  --accent: #6ea8e8;
  --ok: #4ec77f;
  --danger: #e06c60;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- brand ---- */

.fleet {
  display: inline-grid;
  grid-template-columns: repeat(4, 5px);
  gap: 3px;
}
.fleet i { width: 5px; height: 5px; background: var(--edge); border-radius: 1px; }
.fleet i:nth-child(3) { background: var(--accent); }
.fleet.big { grid-template-columns: repeat(4, 9px); gap: 5px; margin-bottom: 18px; }
.fleet.big i { width: 9px; height: 9px; border-radius: 2px; }

.wordmark {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--text);
}

/* ---- chrome ---- */

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 28px;
  border-bottom: 1px solid var(--edge);
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 14px; }
.brand:hover { text-decoration: none; }
.topnav { display: flex; align-items: center; gap: 20px; font-size: 13.5px; }
.topnav a { color: var(--muted); }
.topnav a:hover { color: var(--text); text-decoration: none; }
.who { color: var(--muted); font-family: var(--mono); font-size: 12px; }

.linkish {
  background: none; border: none; color: var(--muted);
  font: inherit; font-size: 13.5px; cursor: pointer;
}
.linkish:hover { color: var(--text); }

.wrap { max-width: 820px; margin: 0 auto; padding: 36px 24px 80px; }
.center { min-height: 100vh; display: grid; place-items: center; padding: 24px; }

.pagetitle {
  font-size: 15px;
  font-family: var(--mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 22px;
}

.banner {
  padding: 10px 14px; border-radius: 8px; margin-bottom: 18px; font-size: 14px;
  border: 1px solid var(--edge); background: var(--surface);
}
.banner.ok { border-color: color-mix(in srgb, var(--ok) 45%, transparent); color: var(--ok); }
.banner.err { border-color: color-mix(in srgb, var(--danger) 55%, transparent); color: var(--danger); }

/* ---- spec plates ---- */

.plate {
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: 12px;
  margin-bottom: 20px;
  overflow: hidden;
}

.plate-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--edge);
  background: var(--surface2);
}

.machine-name {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.plate-ip { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }
.assign-state { margin-left: auto; font-size: 12.5px; color: var(--muted); }

.led {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--edge); flex-shrink: 0;
}
.led.on {
  background: var(--ok);
  box-shadow: 0 0 8px color-mix(in srgb, var(--ok) 70%, transparent);
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: 0.55; } }
@media (prefers-reduced-motion: reduce) { .led.on { animation: none; } }

.plate-body { padding: 18px 20px 20px; }

.proto {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin: 18px 0 10px;
}
.proto:first-child { margin-top: 0; }

.spec {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 5px 0;
  flex-wrap: wrap;
}
.spec .k {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.spec .dots {
  flex: 1;
  min-width: 30px;
  border-bottom: 1px dotted var(--edge);
  transform: translateY(-4px);
}
.spec code { font-family: var(--mono); font-size: 13.5px; }
.spec .unset { color: var(--muted); font-style: italic; }

.copy, .reveal {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  background: none;
  border: 1px solid var(--edge);
  border-radius: 5px;
  padding: 2px 8px;
  cursor: pointer;
}
.copy:hover, .reveal:hover { color: var(--accent); border-color: var(--accent); }
.copy.done { color: var(--ok); border-color: var(--ok); }

.note { font-size: 12.5px; color: var(--muted); margin-top: 10px; }

.empty {
  border: 1px dashed var(--edge);
  border-radius: 12px;
  padding: 40px 24px;
  text-align: center;
  color: var(--muted);
}

/* ---- forms ---- */

input, select {
  background: var(--bg);
  border: 1px solid var(--edge);
  border-radius: 8px;
  color: var(--text);
  font: 14px var(--sans);
  padding: 8px 10px;
  width: 100%;
}
input:focus, select:focus { border-color: var(--accent); outline: none; }

button {
  font: 600 13.5px var(--sans);
  border-radius: 8px;
  border: 1px solid var(--edge);
  background: var(--surface2);
  color: var(--text);
  padding: 8px 14px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }

.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0e1116;
}
.primary:hover { filter: brightness(1.08); }

.danger { color: var(--danger); border-color: var(--danger); background: none; }

.ghost {
  display: inline-block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--edge);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--accent);
}
.ghost:hover { border-color: var(--accent); text-decoration: none; }
.ghost.slim { margin: 0; padding: 6px 12px; }
.primary-ghost { background: var(--accent); border-color: var(--accent); color: #0e1116; }
.primary-ghost:hover { filter: brightness(1.08); }
.actions-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

label { display: block; font-size: 13px; color: var(--muted); }
label input, label select { margin-top: 5px; }

.stack { display: grid; gap: 14px; margin-top: 8px; text-align: left; }

.inline-form {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.inline-form label { margin: 0; }
.inline-form select, .inline-form input { width: auto; min-width: 220px; }

.grid-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
  align-items: end;
}
.grid-form .wide { grid-column: 1 / -1; }
.grid-form .check { display: flex; align-items: center; gap: 8px; }
.grid-form .check input { width: auto; margin: 0; }

.editbox { margin-top: 14px; }
.editbox summary, .actions summary {
  font-size: 12.5px;
  color: var(--muted);
  cursor: pointer;
}
.editbox summary:hover, .actions summary:hover { color: var(--accent); }
.editbox form { margin-top: 14px; }

/* ---- login ---- */

.login-plate {
  width: min(360px, 100%);
  background: var(--surface);
  border: 1px solid var(--edge);
  border-radius: 14px;
  padding: 36px 32px;
  text-align: center;
}
.login-plate h1 { font-size: 20px; }
.tagline { color: var(--muted); font-size: 13px; margin: 4px 0 22px; }

/* ---- users table ---- */

.users { width: 100%; border-collapse: collapse; font-size: 14px; }
.users th {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--edge);
}
.users td { padding: 10px; border-bottom: 1px solid var(--edge); vertical-align: top; }
.users .muted { color: var(--muted); }
.actions { display: flex; flex-direction: column; gap: 6px; }
.actions form { margin-top: 8px; }
.actions input { min-width: 160px; }

.badge {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 1px 6px;
}

@media (max-width: 640px) {
  .grid-form { grid-template-columns: 1fr; }
  .topbar { padding: 12px 16px; flex-wrap: wrap; }
  .assign-state { margin-left: 0; width: 100%; }
  .plate-head { flex-wrap: wrap; }
}