:root {
  --bg: #f3efe7;
  --panel: #fffdf9;
  --text: #1f1a14;
  --muted: #5f5a52;
  --accent: #0a7a58;
  --accent-2: #e66b2e;
  --line: #dbd2c5;
}

:root[data-theme="dark"] {
  --bg: #171a1d;
  --panel: #21272b;
  --text: #f4f2ed;
  --muted: #b9b2a8;
  --accent: #4bd49f;
  --accent-2: #ff8b57;
  --line: #3b464e;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "IBM Plex Sans", "Trebuchet MS", sans-serif;
  background: radial-gradient(circle at 10% 10%, #fff4db 0%, var(--bg) 45%), var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.background-shape {
  position: fixed;
  right: -120px;
  top: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent-2) 55%, transparent);
  opacity: 0.18;
  z-index: 0;
}

.topbar, .dashboard { position: relative; z-index: 1; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
  padding: 18px 24px;
}

h1 { margin: 0; font-size: 1.6rem; }
.subtitle { margin: 4px 0 0; color: var(--muted); }
.topbar-actions { display: flex; gap: 10px; }
button, select, input {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: var(--panel);
  color: var(--text);
}
button { cursor: pointer; }
button:hover { border-color: var(--accent); }

.dashboard {
  max-width: 1120px;
  margin: 0 auto 36px;
  padding: 0 18px 18px;
}

.controls {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 10px 28px rgba(0,0,0,0.05);
}

.filter-grid, .mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

label { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: 0.9rem; }
.control-actions { margin-top: 10px; display: flex; gap: 8px; flex-wrap: wrap; }
.status-row { display: flex; gap: 10px; margin-top: 10px; }
#status, #error {
  flex: 1;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
}
#error { color: #b00020; }

.tabs { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.tab.active { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 22%, var(--panel)); }
.tab-panel { display: none; margin-top: 12px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
.tab-panel.active { display: block; }
.summary-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }
.summary-card { border: 1px solid var(--line); border-radius: 10px; padding: 10px; }
.summary-card .k { font-size: 0.78rem; color: var(--muted); }
.summary-card .v { font-size: 1.1rem; font-weight: 700; }

.viz-header h2 { margin: 0 0 4px; }
.legend { font-size: 0.88rem; color: var(--muted); margin-bottom: 8px; }
svg { width: 100%; max-width: 720px; border: 1px solid var(--line); border-radius: 10px; background: color-mix(in srgb, var(--panel) 92%, #fff); }
pre { max-height: 320px; overflow: auto; background: #111; color: #d5ffdd; padding: 10px; border-radius: 10px; }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.38);
  display: grid;
  place-items: center;
}
.overlay-card {
  width: min(560px, 92vw);
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

@media (max-width: 760px) {
  .topbar { flex-direction: column; }
  .status-row { flex-direction: column; }
}