:root {
  --bg: var(--tg-theme-bg-color, #17212b);
  --fg: var(--tg-theme-text-color, #f5f5f5);
  --hint: var(--tg-theme-hint-color, #8a97a3);
  --card: var(--tg-theme-secondary-bg-color, #232e3c);
  --accent: var(--tg-theme-button-color, #4ea1f0);
  --accent-fg: var(--tg-theme-button-text-color, #fff);
  --border: rgba(255, 255, 255, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  font-size: 15px;
}

.topbar {
  position: sticky;
  top: 0;
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.brand { font-weight: 600; white-space: nowrap; }
.channel-select {
  margin-left: auto;
  max-width: 60%;
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
}

main { padding: 14px; display: flex; flex-direction: column; gap: 16px; }
.hidden { display: none; }
.muted { color: var(--hint); font-size: 13px; }

.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px; }
.card-label { color: var(--hint); font-size: 12px; margin-bottom: 6px; }
.card-value { font-size: 22px; font-weight: 700; }

.panel { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.panel h2 { margin: 0 0 12px; font-size: 16px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.panel-head h2 { margin: 0; }

.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th, .tbl td { text-align: left; padding: 7px 6px; border-bottom: 1px solid var(--border); }
.tbl th { color: var(--hint); font-weight: 500; }
.tbl td:not(:first-child), .tbl th:not(:first-child) { text-align: right; }

.btn {
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.btn:active { opacity: 0.8; }

.export-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 8px; }
.export-row select { background: var(--bg); color: var(--fg); border: 1px solid var(--border); border-radius: 8px; padding: 8px; }