:root { --bg:#f7f7f8; --fg:#1b1b1f; --muted:#6b6b76; --card:#fff; --line:#e3e3e8; --accent:#2457d6;
  --ok:#1f7a3a; --bad:#b42318; --warn:#9a6700; }
@media (prefers-color-scheme: dark) { :root { --bg:#141417; --fg:#ececf1; --muted:#9a9aa6; --card:#1d1d22;
  --line:#2e2e36; --accent:#7aa2ff; --ok:#5cc87a; --bad:#ff7a6e; --warn:#e8b64c; } }
* { box-sizing: border-box; }
body { margin:0; font:15px/1.5 system-ui, sans-serif; background:var(--bg); color:var(--fg); }
header { display:flex; gap:16px; align-items:center; padding:10px 16px; border-bottom:1px solid var(--line); background:var(--card); flex-wrap:wrap; }
header nav a { margin-right:12px; }
header form { margin-left:auto; }
main { max-width:1100px; margin:0 auto; padding:16px; }
a { color:var(--accent); text-decoration:none; } a:hover { text-decoration:underline; }
h1 { font-size:22px; margin:8px 0 16px; } h2 { font-size:17px; margin:24px 0 8px; }
.card { background:var(--card); border:1px solid var(--line); border-radius:8px; padding:14px; margin-bottom:14px; }
table { width:100%; border-collapse:collapse; } th, td { text-align:left; padding:6px 8px; border-bottom:1px solid var(--line); vertical-align:top; }
th { color:var(--muted); font-weight:500; font-size:13px; }
.table-wrap { overflow-x:auto; }
label { display:block; margin:8px 0 2px; color:var(--muted); font-size:13px; }
input, select, textarea, button { font:inherit; padding:6px 8px; border:1px solid var(--line); border-radius:6px; background:var(--bg); color:var(--fg); max-width:100%; }
input[type=text], input[type=password], textarea, select.wide { width:100%; }
button { background:var(--accent); color:#fff; border:0; cursor:pointer; margin-top:8px; }
button.link { background:none; color:var(--accent); padding:0; margin:0; }
.inline { display:inline; }
.muted { color:var(--muted); font-size:13px; }
.st-valid { color:var(--ok); } .st-invalid { color:var(--bad); font-weight:600; }
.st-permission_error, .st-unknown { color:var(--warn); } .st-temporary_error { color:var(--warn); }
.error { color:var(--bad); background:color-mix(in srgb, var(--bad) 10%, transparent); padding:8px; border-radius:6px; }
.banner { border-left:4px solid var(--bad); }
.htmx-request { opacity:.6; }
.grid2 { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:14px; }
.login-card { max-width:380px; margin:40px auto; }
label.check { display:flex; gap:8px; align-items:center; color:var(--fg); font-size:14px; margin-top:10px; }
.stepup { border-left:4px solid var(--warn); }
.warn { color:var(--warn); background:color-mix(in srgb, var(--warn) 10%, transparent); padding:6px 8px; border-radius:6px; }
.cache { display:inline-block; font-size:12px; padding:2px 6px; border-radius:4px; border:1px solid var(--line); margin:2px 4px 2px 0; }
.cache-fresh { color:var(--ok); } .cache-stale { color:var(--warn); } .cache-error { color:var(--bad); }
.account-block.disabled { opacity:.85; border-style:dashed; }
.period-form label, .result-form label { display:inline-block; margin-right:4px; }
.spend-chart svg { width:100%; height:auto; display:block; }
.spend-chart .bars rect { fill:var(--accent); }
.spend-chart .axis text { fill:var(--muted); font-size:11px; }
.spend-chart .axis path, .spend-chart .axis line { stroke:var(--line); }
.inline-form { margin-bottom:12px; }