:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-2: #273449;
  --border: #334155;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --accent: #38bdf8;
  --green: #22c55e;
  --red: #ef4444;
  --yellow: #eab308;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* ---------- Login ---------- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 340px;
  text-align: center;
}
.login-card h1 { margin: 0; color: var(--accent); }
.login-card .subtitle { color: var(--text-dim); font-size: 13px; margin-bottom: 24px; }
.login-card form { display: flex; flex-direction: column; text-align: left; gap: 6px; }
.login-card label { font-size: 13px; color: var(--text-dim); margin-top: 8px; }
.login-card input {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px;
  border-radius: 6px;
}
.login-card button {
  margin-top: 18px;
  background: var(--accent);
  border: none;
  color: #06232f;
  font-weight: 700;
  padding: 12px;
  border-radius: 6px;
  cursor: pointer;
}
.login-card button:hover { opacity: 0.9; }
.login-card .error { color: var(--red); font-size: 13px; min-height: 18px; }
.login-card .hint { color: var(--text-dim); font-size: 11px; margin-top: 16px; }

/* ---------- Layout do painel ---------- */
.app-layout { display: flex; height: 100vh; }
.sidebar {
  width: 240px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 16px 0;
  overflow-y: auto;
}
.sidebar .brand { padding: 0 20px 16px; font-weight: 700; color: var(--accent); font-size: 18px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.sidebar .menu-group { margin-bottom: 6px; }
.sidebar .menu-title { padding: 10px 20px; font-size: 11px; text-transform: uppercase; color: var(--text-dim); letter-spacing: 0.05em; }
.sidebar .menu-item {
  display: block;
  padding: 10px 20px;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  font-size: 14px;
  border-left: 3px solid transparent;
}
.sidebar .menu-item:hover, .sidebar .menu-item.active {
  background: var(--panel-2);
  border-left-color: var(--accent);
}
.main {
  flex: 1;
  overflow-y: auto;
  padding: 24px 32px;
}
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.topbar h2 { margin: 0; }
.topbar .user-box { color: var(--text-dim); font-size: 13px; display: flex; gap: 12px; align-items: center; }
.topbar button { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); padding: 6px 12px; border-radius: 6px; cursor: pointer; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 20px; }
.card h3 { margin-top: 0; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--text-dim); font-weight: 600; }

.btn { background: var(--accent); border: none; color: #06232f; font-weight: 600; padding: 8px 14px; border-radius: 6px; cursor: pointer; font-size: 13px; }
.btn.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--red); color: white; }
.btn:hover { opacity: 0.9; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid label { display: flex; flex-direction: column; font-size: 12px; color: var(--text-dim); gap: 4px; }
.form-grid input, .form-grid select, .form-grid textarea {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text); padding: 8px; border-radius: 6px; font-size: 13px;
}

.badge { padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.badge.online { background: rgba(34,197,94,0.15); color: var(--green); }
.badge.offline { background: rgba(239,68,68,0.15); color: var(--red); }
.badge.unknown { background: rgba(148,163,184,0.15); color: var(--text-dim); }

.traffic-line-green { color: var(--green); }
.traffic-line-red { color: var(--red); }

.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.kpi { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.kpi .value { font-size: 28px; font-weight: 700; color: var(--accent); }
.kpi .label { font-size: 12px; color: var(--text-dim); margin-top: 4px; }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  color: var(--text-dim);
  cursor: pointer;
}
.dropzone.dragover { border-color: var(--accent); color: var(--accent); }

#map { height: 500px; border-radius: 10px; border: 1px solid var(--border); }

.msg { font-size: 13px; margin-top: 8px; }
.msg.ok { color: var(--green); }
.msg.error { color: var(--red); }

.tag-checkbox { display: flex; align-items: center; gap: 8px; }