/* ── Reset & Base ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #222633;
  --border: #2e3348;
  --text: #e1e4ed;
  --text-dim: #8b90a5;
  --accent: #6c7bff;
  --green: #34d399;
  --red: #f87171;
  --orange: #fbbf24;
  --cyan: #22d3ee;
  --radius: 8px;
}
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Header ──────────────────────────────────────────────────── */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-left h1 { font-size: 1.3rem; font-weight: 700; }
.header-left .subtitle { font-size: 0.8rem; color: var(--text-dim); margin-left: 8px; }
.status-bar { display: flex; gap: 8px; flex-wrap: wrap; }
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-connecting { background: #fbbf2433; color: var(--orange); }
.badge-on  { background: #34d39933; color: var(--green); }
.badge-off { background: #f8717133; color: var(--red); }
.badge-info { background: #6c7bff22; color: var(--accent); }
.badge-muted { background: var(--surface2); color: var(--text-dim); }

/* ── Controls ────────────────────────────────────────────────── */
.controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  gap: 16px;
  flex-wrap: wrap;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.filter-group { display: flex; align-items: center; gap: 6px; }
.filter-group label { font-size: 0.8rem; color: var(--text-dim); margin-right: 4px; }
.filter-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all .15s;
}
.filter-btn:hover { border-color: var(--accent); color: var(--text); }
.filter-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.search-group input {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  width: 220px;
  outline: none;
  transition: border .15s;
}
.search-group input:focus { border-color: var(--accent); }

/* ── Layout ──────────────────────────────────────────────────── */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 0;
  height: calc(100vh - 120px);
}
@media (max-width: 1000px) {
  .main-layout { grid-template-columns: 1fr; }
  .changes-panel { display: none; }
}

/* ── Server Cards ────────────────────────────────────────────── */
.servers-panel {
  padding: 16px 20px;
  overflow-y: auto;
}
.loading-msg {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 0;
  color: var(--text-dim);
}
.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin-bottom: 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.server-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .2s;
}
.server-card.has-change { border-color: var(--orange); }
.server-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: var(--surface2);
  cursor: pointer;
  user-select: none;
}
.server-header:hover { background: #282c3d; }
.server-name { font-weight: 700; font-size: 0.95rem; }
.server-meta { display: flex; gap: 8px; align-items: center; }
.server-meta .offer-count {
  background: var(--accent);
  color: #fff;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 700;
}
.server-meta .best-price {
  color: var(--green);
  font-weight: 700;
  font-size: 0.85rem;
}
.server-meta .chevron {
  color: var(--text-dim);
  transition: transform .2s;
  font-size: 0.8rem;
}
.server-card.collapsed .chevron { transform: rotate(-90deg); }
.server-card.collapsed .offer-table { display: none; }

/* ── Table ───────────────────────────────────────────────────── */
.offer-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.offer-table th {
  text-align: left;
  padding: 8px 10px;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--surface);
}
.offer-table td {
  padding: 7px 10px;
  border-bottom: 1px solid #1e2130;
  white-space: nowrap;
}
.offer-table tr:hover td { background: #1e223060; }
.offer-table tr.new-offer td { background: #34d39910; }
.offer-table tr.price-down td { background: #34d39915; }
.offer-table tr.price-up td { background: #f8717115; }

.price-cell { font-weight: 700; font-variant-numeric: tabular-nums; }
.price-cell.best { color: var(--green); }
.stock-cell { font-variant-numeric: tabular-nums; }
.online-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 4px;
}
.online-dot.on  { background: var(--green); box-shadow: 0 0 4px var(--green); }
.online-dot.off { background: var(--red); opacity: .5; }

.positive-good { color: var(--green); }
.positive-ok   { color: var(--orange); }
.positive-bad  { color: var(--red); }

.no-offers { padding: 20px; text-align: center; color: var(--text-dim); }

/* ── Changes Panel ───────────────────────────────────────────── */
.changes-panel {
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 16px;
  overflow-y: auto;
}
.changes-panel h3 {
  font-size: 0.9rem;
  margin-bottom: 12px;
  color: var(--text-dim);
}
.changes-list { display: flex; flex-direction: column; gap: 6px; }
.change-item {
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  line-height: 1.4;
  border-left: 3px solid;
}
.change-item.type-new   { background: #34d39912; border-color: var(--green); }
.change-item.type-gone  { background: #f8717112; border-color: var(--red); }
.change-item.type-price { background: #fbbf2412; border-color: var(--orange); }
.change-item.type-stock { background: #6c7bff12; border-color: var(--accent); }
.change-server { font-weight: 700; color: var(--cyan); }
.change-seller { font-weight: 600; }
.change-detail { color: var(--text-dim); }
.change-time { font-size: 0.65rem; color: var(--text-dim); float: right; }
.muted { color: var(--text-dim); font-size: 0.8rem; }