:root { color-scheme: light dark; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0; padding: 0; background: #f4f4f5; color: #18181b;
}
.topnav { display: flex; gap: 1.25rem; align-items: center; padding: .75rem 1.5rem; background: #18181b; }
.topnav a { color: #fff; text-decoration: none; font-size: .95rem; }
.topnav a:first-child { font-weight: 600; margin-right: auto; }
.topnav .link-btn { background: none; border: none; color: #d4d4d8; cursor: pointer; font-size: .9rem; padding: 0; }

.wrap { max-width: 420px; margin: 12vh auto; padding: 0 1rem; }
.wrap.wide { max-width: 960px; margin: 3rem auto; }

.card { background: #fff; border-radius: 10px; padding: 2rem; box-shadow: 0 1px 3px rgba(0,0,0,.1); }
h1 { margin-top: 0; font-size: 1.4rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 .75rem; }
label { display: block; margin-bottom: 1rem; font-size: .9rem; }
input, select { display: block; width: 100%; box-sizing: border-box; padding: .5rem; margin-top: .25rem; border: 1px solid #d4d4d8; border-radius: 6px; font-size: .95rem; }
input[type="checkbox"] { display: inline-block; width: auto; margin-right: .4rem; }
button { background: #18181b; color: #fff; border: none; padding: .6rem 1.2rem; border-radius: 6px; cursor: pointer; font-size: .9rem; }
.error { color: #b91c1c; }
.muted { color: #71717a; font-size: .9rem; }

.settings-nav { display: flex; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.settings-nav a { padding: .5rem .9rem; background: #fff; border-radius: 6px; text-decoration: none; color: #18181b; font-size: .9rem; box-shadow: 0 1px 2px rgba(0,0,0,.08); }

table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,.1); }
th, td { text-align: left; padding: .6rem .8rem; border-bottom: 1px solid #f0f0f1; font-size: .88rem; }
th { background: #fafafa; font-weight: 600; color: #52525b; }
tr:last-child td { border-bottom: none; }
tr.inactive { opacity: .5; }
.badge { display: inline-block; padding: .1rem .5rem; border-radius: 999px; font-size: .75rem; background: #e4e4e7; }
.badge.active { background: #dcfce7; color: #166534; }
.badge.inactive { background: #fee2e2; color: #991b1b; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 1.5rem; }
.form-grid label.full { grid-column: 1 / -1; }
.toggle-btn { background: none; border: 1px solid #d4d4d8; color: #52525b; padding: .3rem .7rem; border-radius: 6px; font-size: .8rem; cursor: pointer; }