:root {
  color-scheme: light dark;
  --bg: #f6f6f8;
  --surface: #ffffff;
  --text: #1f2025;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #00ae42;
  --accent-2: #0099ff;
  --error: #d94343;
  --shadow: 0 1px 2px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Helvetica Neue", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1c1e; --surface: #2a2a2c; --text: #f2f2f7;
    --muted: #98989f; --border: #3a3a3c;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 4px 12px rgba(0,0,0,.25);
  }
}
* { box-sizing: border-box; }
html,body { margin:0; padding:0; background:var(--bg); color:var(--text); min-height:100vh; }
.hidden { display: none !important; }

#topbar {
  display:flex; align-items:center; gap:12px;
  padding:10px 20px; background:var(--surface);
  border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:10;
}
#topbar h1 { font-size:16px; margin:0; }
#topbar nav { display:flex; gap:6px; margin-left:16px; }
#topbar nav button {
  background:transparent; border:none; padding:6px 12px;
  font-size:13px; border-radius:6px; cursor:pointer; color:var(--muted);
}
#topbar nav button.active { background:var(--bg); color:var(--text); font-weight:500; }
.spacer { flex:1; }
#main { padding: 16px 20px 80px; max-width:1200px; margin: 0 auto; }
.toolbar { display:flex; align-items:center; gap:8px; margin-bottom:12px; }
.toolbar h2 { margin:0; font-size:18px; }

.card {
  background:var(--surface); border:1px solid var(--border);
  border-radius:12px; padding:16px 18px; margin-bottom:14px;
  box-shadow:var(--shadow);
}
h3 { margin:0 0 10px; font-size:13px; text-transform:uppercase;
     letter-spacing:.04em; color:var(--muted); }
.muted { color:var(--muted); font-size:13px; }
.error { color:var(--error); font-size:13px; margin-top:10px; min-height:16px; }

label { display:block; font-size:12px; color:var(--muted); margin-top:10px; }
input, select {
  width:100%; padding:8px 10px; border:1px solid var(--border);
  border-radius:8px; background:var(--surface); color:var(--text);
  font-size:14px; margin-top:4px;
}
button {
  padding:7px 12px; border-radius:8px; border:1px solid var(--border);
  background:var(--surface); color:var(--text); font-size:13px; cursor:pointer;
  transition:background .15s, transform .05s;
}
button:hover { background:var(--bg); }
button:active { transform:scale(.98); }
button.primary {
  background:var(--accent); border-color:var(--accent); color:white;
}
button.primary:hover { filter:brightness(1.05); }

.login-card { max-width:420px; margin: 48px auto; }
.divider { text-align:center; color:var(--muted); font-size:12px; margin:14px 0 10px; }
#google-button { display:flex; justify-content:center; min-height:40px; }
details summary { cursor:pointer; padding:6px 0; color:var(--muted); font-size:13px; }

.pill {
  font-size:12px; color:var(--muted); padding:4px 8px;
  border-radius:999px; background:var(--bg); border:1px solid var(--border);
}

.grid { display:grid; grid-template-columns: repeat(4, 1fr); gap:14px; }
.grid > .chart-card { grid-column: span 2; }
.kpi label { margin:0 0 4px; }
.kpi strong { font-size:26px; font-variant-numeric: tabular-nums; }
.kpi span { font-size:12px; color:var(--muted); margin-left:4px; }
.chart-card canvas { height:240px !important; }

table { width:100%; border-collapse:collapse; font-size:13px; }
th, td { padding:8px 6px; border-bottom:1px solid var(--border); text-align:left; }
th { color:var(--muted); font-weight:500; font-size:12px; text-transform:uppercase; letter-spacing:.04em; }
td input { padding:4px 6px; font-size:13px; margin:0; }
.row { display:flex; align-items:center; gap:8px; margin:8px 0; }

.swatch { width:18px; height:18px; border-radius:4px; border:1px solid var(--border); display:inline-block; vertical-align:middle; }
.color-row { display:flex; align-items:center; gap:8px; padding:4px 0; font-size:13px; }

.file-btn {
  padding:7px 12px; border-radius:8px; border:1px solid var(--border);
  background:var(--surface); cursor:pointer; font-size:13px;
}
.file-btn:hover { background:var(--bg); }

.ams-tray {
  display:flex; flex-direction:column; align-items:center; padding:10px;
  border:1px solid var(--border); border-radius:8px; font-size:12px;
  min-width:90px; gap:4px;
}
.ams-tray .swatch { width:28px; height:28px; }
#ams-grid { display:flex; flex-wrap:wrap; gap:8px; }

.modal {
  position:fixed; inset:0; background:rgba(0,0,0,.5);
  display:flex; align-items:center; justify-content:center; z-index:100; padding:20px;
}
.modal-card {
  background:var(--surface); border-radius:12px; padding:20px;
  max-width:780px; width:100%; max-height:90vh; overflow:auto;
}

ul { list-style:none; padding:0; margin:0; }
#events-list li {
  display:flex; gap:10px; padding:8px 0; border-bottom:1px solid var(--border);
  font-size:13px; align-items:center;
}
.kind-loaded { color: var(--accent); }
.kind-removed { color: var(--muted); }
.event-when { color:var(--muted); font-size:12px; min-width:140px; }

#loader {
  position:fixed; inset:0; background:rgba(0,0,0,.4);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:12px; color:white; z-index:1000;
}
.spinner {
  width:28px; height:28px;
  border:3px solid rgba(255,255,255,.3); border-top-color:white;
  border-radius:50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  .grid > .chart-card { grid-column: span 1; }
  #topbar nav { flex-wrap:wrap; }
}