* { margin:0; padding:0; box-sizing:border-box; }
:root {
  --bg: #0B1628;
  --surface: rgba(255,255,255,0.04);
  --surface-hover: rgba(255,255,255,0.07);
  --border: rgba(255,255,255,0.08);
  --text: #C8D0DC;
  --text-dim: rgba(255,255,255,0.4);
  --text-bright: #FFFFFF;
  --accent: #2563EB;
  --accent-glow: rgba(37,99,235,0.3);
  --green: #22C55E;
  --green-bg: rgba(34,197,94,0.12);
  --red: #EF4444;
  --red-bg: rgba(239,68,68,0.12);
  --yellow: #EAB308;
  --yellow-bg: rgba(234,179,8,0.12);
  --orange: #F97316;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "SF Mono", "Fira Code", "Consolas", monospace;
}
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Navigation */
.nav {
  background: rgba(11,22,40,0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  position: sticky; top:0; z-index:100;
}
.nav-inner {
  max-width:1300px; margin:0 auto;
  display:flex; align-items:center; gap:20px;
  padding:0 24px; height:56px;
}
.nav-brand {
  display:flex; align-items:center; gap:8px;
  text-decoration:none; color:var(--text-bright);
  font-weight:600; font-size:16px; flex-shrink:0;
}
.brand-icon { color:var(--accent); font-size:22px; }
.brand-sub { color:var(--text-dim); font-weight:400; font-size:13px; margin-left:4px; }
.nav-links { display:flex; gap:4px; }
.nav-link {
  padding:6px 14px; border-radius:8px;
  color:var(--text-dim); text-decoration:none;
  font-size:13px; transition:all 0.2s;
  cursor:pointer;
}
.nav-link:hover { color:var(--text); background:var(--surface-hover); }
.nav-link.active { color:var(--accent); background:rgba(37,99,235,0.12); }
.nav-search {
  margin-left:auto; display:flex; gap:0;
  flex-shrink:0;
}
.nav-search input {
  padding:6px 12px; border-radius:8px 0 0 8px;
  border:1px solid var(--border); border-right:none;
  background:var(--surface); color:var(--text);
  font-size:13px; width:200px; outline:none;
  font-family:var(--font);
}
.nav-search input:focus { border-color:var(--accent); }
.nav-search button {
  padding:6px 14px; border-radius:0 8px 8px 0;
  border:1px solid var(--border);
  background:var(--surface); color:var(--text-dim);
  font-size:13px; cursor:pointer; transition:0.2s;
}
.nav-search button:hover { background:var(--surface-hover); color:var(--text); }

/* Main */
.main { min-height: calc(100vh - 56px - 44px); }
.container { max-width:1300px; margin:0 auto; padding:24px; }

/* Footer */
.footer {
  border-top:1px solid var(--border);
  padding:12px 24px;
}
.footer-inner {
  max-width:1300px; margin:0 auto;
  display:flex; justify-content:space-between;
  font-size:12px; color:var(--text-dim);
}

/* Loading */
.loading {
  display:flex; align-items:center; justify-content:center;
  padding:60px; color:var(--text-dim); font-size:14px;
}
.spinner {
  width:20px; height:20px; border:2px solid var(--border);
  border-top-color:var(--accent); border-radius:50%;
  animation:spin 0.8s linear infinite; margin-right:10px;
}
@keyframes spin { to { transform:rotate(360deg); } }

/* Page Header */
.page-header {
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:20px;
}
.page-title {
  font-size:22px; font-weight:600; color:var(--text-bright);
}
.page-subtitle { font-size:13px; color:var(--text-dim); margin-top:4px; }

/* Cards Grid */
.stats-grid {
  display:grid; grid-template-columns:repeat(auto-fit, minmax(180px,1fr));
  gap:12px; margin-bottom:24px;
}
.stat-card {
  padding:16px 20px; border-radius:12px;
  background:var(--surface); border:1px solid var(--border);
}
.stat-label { font-size:11px; text-transform:uppercase; letter-spacing:1px; color:var(--text-dim); margin-bottom:6px; }
.stat-value { font-size:24px; font-weight:600; color:var(--text-bright); }
.stat-sub { font-size:12px; color:var(--text-dim); margin-top:4px; }
.stat-green .stat-value { color:var(--green); }
.stat-red .stat-value { color:var(--red); }
.stat-yellow .stat-value { color:var(--yellow); }
.stat-blue .stat-value { color:#60A5FA; }

/* Section */
.section-title {
  font-size:15px; font-weight:600; color:var(--text-bright);
  margin:20px 0 12px; display:flex; align-items:center; gap:8px;
}

/* Node Grid */
.node-grid {
  display:grid; grid-template-columns:repeat(auto-fit, minmax(260px,1fr));
  gap:14px; margin-bottom:24px;
}
.node-card {
  border-radius:14px; padding:18px;
  background:var(--surface); border:1px solid var(--border);
  border-left:3px solid var(--text-dim);
  transition:0.3s;
}
.node-card:hover { border-color:rgba(255,255,255,0.15); }
.node-card.online { border-left-color:var(--green); }
.node-card.leader { border-left-color:var(--accent); }
.node-card.candidate { border-left-color:var(--yellow); }
.node-card.offline { border-left-color:var(--red); opacity:0.7; }
.node-header {
  display:flex; align-items:center; justify-content:space-between; margin-bottom:10px;
}
.node-name { font-size:14px; font-weight:600; color:var(--text-bright); display:flex; align-items:center; gap:8px; }
.node-loc { font-size:11px; color:var(--text-dim); }
.status-dot {
  width:8px; height:8px; border-radius:50%; display:inline-block;
}
.status-dot.online { background:var(--green); box-shadow:0 0 6px rgba(34,197,94,0.4); }
.status-dot.leader { background:var(--accent); box-shadow:0 0 6px rgba(37,99,235,0.5); }
.status-dot.candidate { background:var(--yellow); }
.status-dot.offline { background:var(--red); }
.role-badge {
  padding:2px 10px; border-radius:10px; font-size:11px; font-weight:600;
}
.role-badge.LEADER { background:rgba(37,99,235,0.2); color:#60A5FA; }
.role-badge.FOLLOWER { background:rgba(34,197,94,0.15); color:#4ADE80; }
.role-badge.CANDIDATE { background:rgba(249,115,22,0.15); color:#FDBA74; }
.role-badge.OBSERVER { background:rgba(234,179,8,0.15); color:#FACC15; }
.role-badge.OFFLINE { background:rgba(239,68,68,0.15); color:#FCA5A5; }
.node-stats {
  display:grid; grid-template-columns:1fr 1fr; gap:8px;
}
.node-stat-label { font-size:10px; color:var(--text-dim); text-transform:uppercase; letter-spacing:0.5px; }
.node-stat-value { font-size:15px; font-weight:600; color:var(--text-bright); margin-top:2px; }
.node-stat-value small { font-size:11px; font-weight:400; color:var(--text-dim); }
.node-footer {
  display:flex; justify-content:space-between; margin-top:10px;
  padding-top:10px; border-top:1px solid var(--border);
  font-size:11px; color:var(--text-dim);
}

/* Table */
.table-wrap {
  overflow-x:auto; border-radius:12px;
  border:1px solid var(--border);
}
table {
  width:100%; border-collapse:collapse;
  font-size:13px;
}
th {
  text-align:left; padding:12px 16px;
  background:rgba(255,255,255,0.03);
  color:var(--text-dim); font-weight:500;
  font-size:11px; text-transform:uppercase; letter-spacing:0.5px;
  border-bottom:1px solid var(--border);
}
td {
  padding:12px 16px; border-bottom:1px solid var(--border);
  color:var(--text);
}
tr:last-child td { border-bottom:none; }
tr:hover td { background:var(--surface-hover); }
.tx-hash, .block-hash {
  font-family:var(--mono); font-size:12px;
  color:var(--accent); cursor:pointer;
}
.tx-hash:hover, .block-hash:hover { text-decoration:underline; }

/* Pagination */
.pagination {
  display:flex; align-items:center; justify-content:center;
  gap:8px; margin-top:16px;
}
.page-btn {
  padding:6px 14px; border-radius:8px;
  border:1px solid var(--border);
  background:var(--surface); color:var(--text);
  font-size:13px; cursor:pointer; transition:0.2s;
}
.page-btn:hover { background:var(--surface-hover); }
.page-btn.active { background:rgba(37,99,235,0.15); border-color:rgba(37,99,235,0.3); color:#60A5FA; }
.page-btn:disabled { opacity:0.4; cursor:not-allowed; }
.page-info { font-size:12px; color:var(--text-dim); }

/* Search Results */
.search-result {
  padding:16px; border-radius:12px;
  background:var(--surface); border:1px solid var(--border);
  margin-bottom:10px;
}
.search-type {
  font-size:11px; text-transform:uppercase; letter-spacing:0.5px;
  color:var(--accent); margin-bottom:6px;
}

/* Detail Card */
.detail-card {
  padding:20px; border-radius:12px;
  background:var(--surface); border:1px solid var(--border);
  margin-bottom:16px;
}
.detail-row {
  display:flex; padding:8px 0;
  border-bottom:1px solid var(--border);
}
.detail-row:last-child { border-bottom:none; }
.detail-label {
  width:140px; flex-shrink:0;
  font-size:12px; color:var(--text-dim); text-transform:uppercase; letter-spacing:0.5px;
}
.detail-value {
  font-family:var(--mono); font-size:13px; color:var(--text);
  word-break:break-all;
}

/* Block/Tx detail badges */
.badge {
  display:inline-block; padding:2px 8px; border-radius:6px;
  font-size:11px; font-weight:500;
}
.badge-blue { background:rgba(37,99,235,0.15); color:#60A5FA; }
.badge-green { background:rgba(34,197,94,0.15); color:#4ADE80; }
.badge-yellow { background:rgba(234,179,8,0.15); color:#FACC15; }

@media (max-width:768px) {
  .nav-inner { flex-wrap:wrap; height:auto; padding:8px 12px; gap:8px; }
  .nav-search { margin-left:0; width:100%; }
  .nav-search input { width:100%; }
  .stats-grid { grid-template-columns:1fr 1fr; }
  .node-grid { grid-template-columns:1fr; }
  .detail-row { flex-direction:column; gap:4px; }
  .detail-label { width:auto; }
}