:root {
  --bg: #0d1117;
  --card: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #00bcd4;
  --accent2: #ff8a00;
  --success: #4caf50;
  --danger: #ff5252;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  padding: 32px 24px;
  background: linear-gradient(180deg, #1a1f29 0%, #0d1117 100%);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
header h1 { margin: 0; font-size: 32px; }
header .sub { margin: 8px 0 0; color: var(--muted); }

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: 24px;
}
main.layout-2col {
  grid-template-columns: 360px 1fr;
}
@media (max-width: 800px) {
  main.layout-2col { grid-template-columns: 1fr; }
}
.col-left { align-self: start; position: sticky; top: 12px; }
.col-right { display: grid; gap: 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 24px;
}
.card h2 { margin: 0 0 8px; font-size: 18px; }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 16px; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.grid .full { grid-column: 1 / -1; }

label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--muted);
  gap: 4px;
}
input, select, textarea {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  padding: 8px 10px;
  font-family: inherit;
  font-size: 14px;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}
button.primary {
  grid-column: 1 / -1;
  background: var(--accent);
  border: none;
  color: #001114;
  font-weight: 700;
  padding: 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}
button.primary:hover { background: #00e1f7; }
button.danger {
  background: var(--danger);
  color: #fff;
  border: none;
  padding: 4px 10px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
}

pre {
  background: #010409;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px;
  overflow-x: auto;
  font-size: 12px;
  color: #b3ffd8;
  white-space: pre-wrap;
  word-break: break-word;
  margin-top: 12px;
}
pre:empty { display: none; }

.success-box {
  background: rgba(76, 175, 80, 0.10);
  border: 1px solid var(--success);
  border-radius: 6px;
  padding: 14px 16px;
  margin-top: 12px;
}
.success-box h3 { margin: 0 0 6px; color: var(--success); font-size: 15px; }
.success-box .warn {
  color: var(--accent2);
  font-size: 13px;
  margin: 10px 0 6px;
}
.imei-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.imei-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #010409;
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 4px;
}
code.imei {
  font-size: 14px;
  letter-spacing: 0.5px;
  color: var(--accent);
  flex: 1;
}
button.copy {
  background: var(--accent);
  color: #001114;
  border: none;
  padding: 3px 8px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 11px;
}
button.copy:hover { background: #00e1f7; }
details summary { cursor: pointer; color: var(--muted); font-size: 12px; }
details pre { margin-top: 6px; }

/* Devices ativos: lista compacta */
.fleet-list { list-style: none; padding: 0; margin: 0; }
.fleet-list .empty { color: var(--muted); text-align: center; padding: 18px 0; font-size: 13px; }
.fleet-list li.fleet {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
  padding: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  cursor: pointer;
}
.fleet-list li.fleet:hover { background: rgba(0,188,212,0.05); }
.fleet-name { color: var(--accent); font-weight: 600; word-break: break-all; }
.fleet-target { color: var(--muted); font-size: 11px; margin-top: 2px; }
.fleet-meta { color: var(--muted); font-size: 11px; margin-top: 2px; }
.fleet-stop { align-self: start; }

/* Falhas (checkbox grid) */
.faults {
  grid-column: 1 / -1;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 14px;
  margin: 0;
}
.faults legend { padding: 0 6px; color: var(--muted); font-size: 12px; }
.faults .cb {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text);
  padding: 3px 0;
  cursor: pointer;
}
.faults .cb input { width: auto; }
.faults .jmak-only { color: var(--muted); }
.faults .badge {
  margin-left: auto;
  background: var(--accent2);
  color: #001114;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 8px;
  font-weight: 700;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 500; }
td.empty { text-align: center; color: var(--muted); padding: 20px; }
.status-running { color: var(--success); }
.status-stopped { color: var(--muted); }
.status-error { color: var(--danger); }
.fleet-id { font-family: monospace; cursor: pointer; color: var(--accent); }

footer {
  text-align: center;
  padding: 24px;
  color: var(--muted);
  font-size: 12px;
}