:root {
  --xs-bg: #0f1219;
  --xs-surface: #171c25;
  --xs-border: #2e3643;
  --xs-text: #ecf1f8;
  --xs-dim: #90a0b8;
  --xs-accent: #50c4a8;
  --xs-accent-soft: #1f3d38;
  --xs-head: #1a2a35;
  --xs-row-odd: #111721;
  --xs-row-even: #151d28;
}

body.light {
  --xs-bg: #f7fafb;
  --xs-surface: #ffffff;
  --xs-border: #d3dde6;
  --xs-text: #1d2530;
  --xs-dim: #647486;
  --xs-accent: #0e8d70;
  --xs-accent-soft: #daf4ec;
  --xs-head: #e7f3ff;
  --xs-row-odd: #ffffff;
  --xs-row-even: #f4f8fb;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  font-family: Inter, -apple-system, BlinkMacSystemFont, Segoe UI, sans-serif;
  background: var(--xs-bg);
  color: var(--xs-text);
}

.xs-topbar {
  height: 52px;
  border-bottom: 1px solid var(--xs-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 12px;
  background: var(--xs-surface);
}

.xs-left, .xs-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.xs-back {
  text-decoration: none;
  color: var(--xs-dim);
  padding: 4px 6px;
  border-radius: 6px;
}
.xs-back:hover { background: var(--xs-border); color: var(--xs-text); }

.xs-logo { color: var(--xs-accent); font-size: 18px; }
.xs-title { font-weight: 700; letter-spacing: 0.6px; font-size: 13px; }
.xs-subtitle { color: var(--xs-dim); font-size: 12px; max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.xs-btn {
  border: 1px solid var(--xs-border);
  background: transparent;
  color: var(--xs-text);
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 12px;
}
.xs-btn:hover { border-color: var(--xs-accent); color: var(--xs-accent); }
.xs-btn-icon { padding: 6px 8px; }
#clearBtn {
  border-color: #b66a6a;
  color: #d58585;
}
#clearBtn:hover {
  border-color: #d58585;
  color: #f0b4b4;
}

.xs-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--xs-border);
  background: var(--xs-surface);
}

.xs-controls label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--xs-dim);
}

.xs-controls select {
  min-width: 140px;
  background: var(--xs-bg);
  color: var(--xs-text);
  border: 1px solid var(--xs-border);
  border-radius: 6px;
  padding: 5px 8px;
}
.xs-controls select option {
  background: var(--xs-bg);
  color: var(--xs-text);
}

.xs-check input { margin: 0; }

.xs-main {
  height: calc(100vh - 52px - 58px - 24px);
  overflow: auto;
}

.xs-dropzone {
  margin: 10px 12px 0;
  border: 1px dashed var(--xs-border);
  border-radius: 10px;
  color: var(--xs-dim);
  text-align: center;
  padding: 10px 12px;
  font-size: 12px;
  background: var(--xs-surface);
  transition: border-color 120ms ease, background 120ms ease, color 120ms ease;
}

.xs-dropzone.active {
  border-color: var(--xs-accent);
  background: var(--xs-accent-soft);
  color: var(--xs-accent);
}

.xs-loading, .xs-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--xs-dim);
}

.xs-grid-wrap {
  overflow: auto;
  height: 100%;
}

.xs-grid {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 12px;
}

.xs-grid th, .xs-grid td {
  border: 1px solid var(--xs-border);
  padding: 4px 8px;
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.xs-grid thead th {
  position: sticky;
  top: 0;
  background: var(--xs-head);
  z-index: 3;
  color: var(--xs-text);
}

.xs-grid tbody tr:nth-child(odd) td { background: var(--xs-row-odd); }
.xs-grid tbody tr:nth-child(even) td { background: var(--xs-row-even); }

.xs-grid .row-num {
  position: sticky;
  left: 0;
  background: var(--xs-surface) !important;
  color: var(--xs-dim);
  text-align: right;
  min-width: 52px;
  z-index: 2;
}

.xs-grid .is-header td { background: var(--xs-accent-soft) !important; }

.xs-status {
  height: 24px;
  border-top: 1px solid var(--xs-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 12px;
  font-size: 11px;
  color: var(--xs-dim);
  background: var(--xs-surface);
}

@media (max-width: 900px) {
  .xs-subtitle { display: none; }
  .xs-controls select { min-width: 120px; }
}