:root,
[data-theme="light"] {
  --bg: #f4f6f8;
  --fg: #1a1f24;
  --panel: #ffffff;
  --accent: #0b6e4f;
  --border: #d0d7de;
}

[data-theme="dark"] {
  --bg: #121417;
  --fg: #e8eaed;
  --panel: #1c2128;
  --accent: #3dd68c;
  --border: #30363d;
}

[data-theme="ocean"] {
  --bg: #e8f1f8;
  --fg: #0b1f33;
  --panel: #ffffff;
  --accent: #1b6ca8;
  --border: #b7c9d9;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
}
.brand { font-weight: 700; margin-right: auto; }
.toolbar { display: flex; gap: 0.4rem; }
button, select {
  font: inherit;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--panel);
  color: var(--fg);
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
main { padding: 1rem; display: grid; gap: 1rem; }
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}
.hint { opacity: 0.8; font-size: 0.9rem; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border); }
tbody tr { cursor: pointer; }
tbody tr.selected { outline: 2px solid var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
#report-canvas {
  width: 100%;
  max-width: 640px;
  border: 1px solid var(--border);
  background: #fff;
}
.export-actions { margin-top: 0.75rem; display: flex; gap: 0.5rem; }