:root {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #f1f5f9;
  --bg-hover: #f0f4ff;
  --border: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #4f46e5;
  --accent-light: #eef2ff;
  --accent-border: #c7d2fe;
  --green: #16a34a;
  --green-bg: #dcfce7;
  --red: #dc2626;
  --red-bg: #fee2e2;
  --gold: #d97706;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07);
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ── Header ── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}
.logo { font-size: 20px; font-weight: 700; color: var(--accent); letter-spacing: -0.5px; }
.logo span { color: var(--text-primary); }
.header-right { display: flex; align-items: center; gap: 20px; }
.latency {
  display: flex; gap: 12px;
  font-size: 11px;
  font-family: 'SF Mono','Menlo','Consolas', monospace;
  color: var(--text-muted);
}
.latency strong { color: var(--gold); }
.colo-info { color: var(--accent); font-weight: 600; }
.status { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); }
.status-dot.live { background: var(--green); }

/* ── Tabs row ── */
.tab-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}
.tabs { display: flex; gap: 0; }
.tab {
  padding: 12px 20px; font-size: 14px; font-weight: 500;
  color: var(--text-muted); cursor: pointer;
  border-bottom: 2px solid transparent; transition: all 0.15s;
}
.tab:hover { color: var(--text-secondary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-right { display: flex; align-items: center; gap: 12px; }
.search-box {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-primary); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 12px; font-size: 13px;
}
.search-box svg { width: 14px; height: 14px; color: var(--text-muted); }
.search-box input {
  border: none; background: none; outline: none;
  color: var(--text-primary); font-size: 13px; width: 160px;
}
.currency-badge {
  background: var(--accent); color: #fff;
  padding: 6px 14px; border-radius: 8px;
  font-size: 13px; font-weight: 600;
}

/* ── Coin pills ── */
.coin-bar { padding: 14px 32px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.coin-pill {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 16px; border-radius: 20px;
  font-size: 13px; font-weight: 500;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer; transition: all 0.15s;
}
.coin-pill:hover { border-color: var(--accent-border); background: var(--accent-light); }
.coin-pill.active {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.coin-pill .dot {
  width: 8px; height: 8px; border-radius: 50%;
}

/* ── Coin detail panel ── */
.coin-detail { padding: 0 32px; }
.coin-detail-panel {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 16px 20px; margin: 8px 0 4px;
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: var(--shadow-sm);
}
.detail-field { display: flex; flex-direction: column; gap: 4px; }
.detail-field label {
  font-size: 11px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.03em;
}
.detail-input-wrap {
  display: flex; align-items: center; gap: 4px;
}
.detail-input-wrap input {
  background: var(--bg-primary); border: 1px solid var(--border);
  color: var(--text-primary); padding: 6px 10px;
  border-radius: 6px; font-size: 14px; width: 120px; outline: none;
}
.detail-input-wrap input:focus { border-color: var(--accent); }
.detail-input-wrap .unit { font-size: 13px; color: var(--text-muted); font-weight: 500; }

/* ── Filters row (electricity, sort) ── */
.filters {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 32px; flex-wrap: wrap;
}
.filter-group { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-secondary); }
.filter-group label { color: var(--text-muted); font-weight: 500; }
.filter-group select, .filter-group input {
  background: var(--bg-secondary); border: 1px solid var(--border);
  color: var(--text-primary); padding: 6px 10px;
  border-radius: 6px; font-size: 13px; outline: none;
}
.filter-group select:focus, .filter-group input:focus { border-color: var(--accent); }
.filter-group input { width: 80px; }

/* ── Table ── */
.table-wrap { padding: 0 32px 32px; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 13px; }
thead th {
  text-align: left; padding: 10px 14px;
  color: var(--accent); font-weight: 600; font-size: 13px;
  border-bottom: 2px solid var(--accent);
  white-space: nowrap; position: sticky; top: 0;
  background: var(--bg-primary);
}
tbody tr { border-bottom: 1px solid var(--border); transition: background 0.1s; }
tbody tr:hover { background: var(--bg-hover); }
td { padding: 12px 14px; white-space: nowrap; color: var(--text-secondary); }
td.miner-name { color: var(--text-primary); font-weight: 600; }
td .coins { display: flex; gap: 4px; }
td .coin-tag {
  font-size: 11px; padding: 2px 7px; border-radius: 4px;
  background: var(--accent-light); color: var(--accent); font-weight: 600;
}
.positive { color: var(--green); font-weight: 600; }
.negative { color: var(--red); font-weight: 600; }

/* ── Electricity cost rate bar ── */
.elec-bar {
  width: 60px; height: 10px;
  background: var(--bg-card);
  border-radius: 5px;
  overflow: hidden;
}
.elec-fill {
  height: 100%;
  border-radius: 5px;
  transition: width 0.3s;
}

/* ── View toggle ── */
.view { display: none; }
.view.active { display: block; }

/* ── Footer ── */
.footer-stats {
  display: flex; gap: 32px; padding: 14px 32px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary); font-size: 12px; color: var(--text-muted);
}
.footer-stats span strong { color: var(--text-secondary); }