:root {
  color-scheme: light dark;
  --bg: #0f1115;
  --card: #171a21;
  --border: #2a2e37;
  --text: #e7e9ee;
  --muted: #9aa1ac;
  --accent: #5b8def;
  --good: #4caf7d;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f6f8;
    --card: #ffffff;
    --border: #e1e4e9;
    --text: #1c1f26;
    --muted: #656b76;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", "Malgun Gothic", sans-serif;
  padding: 24px;
}

h1 { font-size: 20px; margin-bottom: 4px; }
h2 { font-size: 16px; margin: 24px 0 8px; }
.sub { color: var(--muted); font-size: 13px; margin-bottom: 20px; }

nav { display: flex; gap: 16px; margin-bottom: 20px; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav a.active { color: var(--accent); font-weight: 600; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }

.stat { display: flex; justify-content: space-between; align-items: baseline; margin: 4px 0; }
.stat .n { font-size: 22px; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 12px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }

input, select, button, textarea {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
}

button {
  cursor: pointer;
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}
button.secondary { background: transparent; color: var(--text); }
button.secondary.active { background: var(--accent); color: #fff; border-color: var(--accent); }

form { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.pill {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(91,141,239,0.15);
  color: var(--accent);
}

.short-url {
  font-family: monospace;
  font-size: 12px;
  cursor: pointer;
}

a.campaign-link { color: var(--text); text-decoration: none; }
a.campaign-link:hover { color: var(--accent); }