:root {
  --bg: #0f172a;
  --panel: #111827;
  --border: #334155;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22c55e;
  --bad: #ef4444;
  --rx: #1d4ed8;
  --tx: #9333ea;
  --can: #0f766e;
  --j1939: #b45309;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.wrap {
  max-width: 1380px;
  margin: 0 auto;
  padding: 16px;
}
header {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
h1 { margin: 0; font-size: 28px; }
h2 { margin: 0; font-size: 20px; }
.subtitle {
  margin: 6px 0 0;
  color: var(--muted);
}
.tabs {
  display: flex;
  gap: 10px;
}
.tab-btn {
  width: auto;
  background: #020617;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 16px;
  cursor: pointer;
}
.tab-btn.active {
  background: #166534;
  border-color: #14532d;
}
.pane { display: none; }
.pane.active { display: block; }
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-top: 16px;
}
.grid-2, .grid-3 {
  display: grid;
  gap: 16px;
}
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.row {
  display: flex;
  gap: 10px;
  align-items: center;
}
.wrap-row { flex-wrap: wrap; }
.space-between { justify-content: space-between; }
.top-gap { margin-top: 16px; }
label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}
select, input, textarea, button {
  width: 100%;
  background: #020617;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
}
button {
  width: auto;
  cursor: pointer;
}
button.primary {
  border-color: #14532d;
  background: #166534;
}
.buttons { margin-top: 12px; }
.status {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #020617;
  color: var(--muted);
}
.status.ok { color: #86efac; border-color: #166534; }
.status.error { color: #fca5a5; border-color: #7f1d1d; }
#uartLog, #canLog {
  margin-top: 12px;
  background: #020617;
  border: 1px solid var(--border);
  border-radius: 12px;
  min-height: 420px;
  max-height: 65vh;
  overflow: auto;
  padding: 10px;
  font-family: Consolas, Monaco, monospace;
}
.log-line {
  padding: 8px;
  margin-bottom: 8px;
  border: 1px solid #1f2937;
  border-radius: 10px;
}
.log-line.rx { border-left: 5px solid var(--rx); }
.log-line.tx { border-left: 5px solid var(--tx); }
.log-line.can { border-left: 5px solid var(--can); }
.log-line.tx-can { border-left: 5px solid var(--tx); }
.meta {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}
.hex {
  color: #f8fafc;
  white-space: pre-wrap;
  word-break: break-word;
}
.ascii {
  color: #cbd5e1;
  margin-top: 4px;
}
.chip {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--border);
}
.chip.rx { background: rgba(29,78,216,0.2); }
.chip.tx { background: rgba(147,51,234,0.2); }
.chip.can { background: rgba(15,118,110,0.25); }
.chip.j1939 { background: rgba(180,83,9,0.25); }
.j1939-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}
.j1939-grid div {
  background: rgba(180,83,9,0.10);
  border: 1px solid rgba(180,83,9,0.28);
  border-radius: 8px;
  padding: 8px;
}
.j1939-grid span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  margin-bottom: 4px;
}
.j1939-name {
  color: #fdba74;
  font-weight: bold;
  margin-bottom: 8px;
}
.dir-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: bold;
}
.dir-badge.rx { background: rgba(29,78,216,0.2); color: #93c5fd; }
.dir-badge.tx { background: rgba(147,51,234,0.2); color: #d8b4fe; }
.hint {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.45;
}
.hint-box {
  display: flex;
  align-items: end;
  color: var(--muted);
  line-height: 1.45;
  font-size: 14px;
}
code { color: #c4b5fd; }
@media (max-width: 1000px) {
  .grid-2, .grid-3, .j1939-grid { grid-template-columns: 1fr; }
}

.header-right { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.header-auth { display: flex; gap: 10px; align-items: center; }
.auth-badge { display: inline-block; padding: 8px 12px; border-radius: 999px; border: 1px solid var(--border); background: #020617; color: var(--muted); }
.logout-link { display: inline-block; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border); background: #020617; color: var(--text); text-decoration: none; }
.logout-link:hover { border-color: #475569; }
.login-body { min-height: 100vh; display: grid; place-items: center; }
.login-wrap { width: 100%; max-width: 480px; padding: 20px; }
.login-card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 24px; }
.login-form { display: grid; gap: 12px; margin-top: 16px; }
.login-btn { margin-top: 4px; }

.quota-card { margin-bottom: 16px; }
.quota-head { display: flex; gap: 10px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin-bottom: 8px; }
.progress { width: 100%; height: 14px; border-radius: 999px; overflow: hidden; background: #020617; border: 1px solid var(--border); }
.progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, #16a34a, #22c55e); transition: width 0.25s ease; }
.progress-bar.warn { background: linear-gradient(90deg, #d97706, #f59e0b); }
.progress-bar.danger { background: linear-gradient(90deg, #dc2626, #ef4444); }
.hint.tight { margin-top: 8px; }


.saved-log-card select { min-width: 340px; }
.saved-log-card .row { align-items: center; }

.dbc-card {
  border: 1px solid #d7dce3;
  border-radius: 12px;
  padding: 12px;
  background: #fafcff;
}

.dbc-block {
  margin-top: 10px;
  padding: 10px;
  border-radius: 10px;
  background: #f5f8ff;
  border: 1px solid #dbe7ff;
}

.dbc-title {
  font-weight: 700;
  margin-bottom: 8px;
}

.dbc-signal {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 0;
  border-bottom: 1px dashed #dde6f5;
}

.dbc-signal:last-child {
  border-bottom: none;
}

.dbc-signal span {
  color: #4d647d;
  font-size: 12px;
  min-width: 70px;
}

.dbc-signal strong {
  flex: 1;
  font-size: 13px;
}

.dbc-error {
  color: #a33;
  font-size: 12px;
  margin-bottom: 6px;
}

.dbc-empty {
  color: #667;
  font-size: 12px;
}


.version-badge{display:inline-block;margin-left:8px;padding:2px 8px;border-radius:999px;background:#1f2937;color:#fff;font-size:.45em;vertical-align:middle;}
.update-link{display:inline-block;padding:8px 12px;border-radius:10px;border:1px solid #cbd5e1;text-decoration:none;color:inherit;background:#fff;}
.update-link:hover{background:#f8fafc;}
.update-form input[type=file]{display:block;width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;}


.version-badge { display:inline-block; margin-left:10px; padding:4px 10px; border-radius:999px; border:1px solid var(--border); background:#020617; color:var(--muted); font-size:12px; vertical-align:middle; }
.update-link { display: inline-block; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border); background: #020617; color: var(--text); text-decoration: none; }
.update-link:hover { border-color: #475569; }
.summary-card { background:#020617; border:1px solid var(--border); border-radius:12px; padding:14px; min-height:92px; display:flex; flex-direction:column; gap:8px; }
.summary-card span { color: var(--muted); font-size: 13px; }
.summary-card strong { font-size: 18px; line-height: 1.3; }
.card-meta { color: var(--muted); font-size: 12px; }
.table-card { background:#020617; border:1px solid var(--border); border-radius:12px; padding:14px; overflow:auto; }
.stats-table { width:100%; border-collapse: collapse; font-size: 14px; }
.stats-table th, .stats-table td { text-align:left; padding:8px 10px; border-bottom:1px solid #1f2937; vertical-align: top; }
.stats-table th { color: var(--muted); font-weight:600; }
.simple-list { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:8px; }
.simple-list li { padding:8px 10px; border-radius:10px; border:1px solid #1f2937; background:#0b1220; }