:root { --bg: #f4f6f8; --card: #ffffff; --ink: #1d2733; --muted: #5e6b78; --line: #dde3e9; --accent: #1f5fbf; --ok: #1e7a46; --err: #b3261e;
        color-scheme: light; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #11161c; --card: #1a2129; --ink: #e6ebf0; --muted: #9aa7b4; --line: #2c3640; --accent: #7aa7ee; --ok: #6fcf97; --err: #ff8a80;
          color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
.bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: .01em; }
.brand span { color: var(--muted); font-weight: 400; }
nav { display: flex; gap: 14px; align-items: center; }
main { max-width: 880px; margin: 24px auto; padding: 0 16px; display: grid; gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; }
.narrow { max-width: 440px; width: 100%; margin: 0 auto; }
h1 { font-size: 1.5rem; margin: 0 0 12px; } h2 { font-size: 1.1rem; margin: 20px 0 8px; }
label { display: grid; gap: 4px; margin: 12px 0; font-size: .92rem; color: var(--muted); }
input { font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); width: 100%; }
button, .button { font: inherit; display: inline-block; padding: 10px 16px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; cursor: pointer; text-decoration: none; margin-top: 4px; }
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
button.link { background: none; color: var(--accent); padding: 0; margin: 0; }
form.inline { display: inline; }
a { color: var(--accent); }
.small { font-size: .88rem; color: var(--muted); }
.ok { color: var(--ok); } .err { color: var(--err); }
.tag { font-size: .75rem; border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; color: var(--muted); }
.empty { color: var(--muted); font-style: italic; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.kv th { width: 38%; color: var(--muted); font-weight: 500; }
.sessions { padding-left: 18px; font-size: .9rem; }