:root {
  --purple: #7b2ff7;
  --purple-dark: #5b1fc9;
  --bg: #f4f5f9;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --border: #e5e7eb;
  --danger: #dc2626;
  --success: #16a34a;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.topbar .brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--purple-dark);
}

.topbar nav a {
  margin-left: 18px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

.topbar nav a:hover { color: var(--purple-dark); }

.container {
  max-width: 960px;
  margin: 32px auto;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 16px; }
p.subtitle { color: var(--muted); margin-top: 0; font-size: 14px; }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 14px 0 6px;
}

input[type=text], input[type=password], input[type=datetime-local], input[type=number], input[type=url], textarea, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}

textarea { resize: vertical; min-height: 90px; }

.help { font-size: 12px; color: var(--muted); margin-top: 4px; }

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  border: none;
  background: var(--purple);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--purple-dark); }
.btn.secondary { background: #fff; color: var(--purple-dark); border: 1px solid var(--purple); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 6px 10px; font-size: 12px; }
.btn.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge.on { background: #dcfce7; color: var(--success); }
.badge.off { background: #f1f1f4; color: var(--muted); }
.badge.ended { background: #fee2e2; color: var(--danger); }

.flash {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}
.flash.success { background: #dcfce7; color: #14532d; }
.flash.error { background: #fee2e2; color: #7f1d1d; }

.link-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--muted);
  word-break: break-all;
}

.campaign-link-box {
  background: #f6f2ff;
  border: 1px dashed var(--purple);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 18px;
}
.campaign-link-box code { color: var(--purple-dark); font-weight: 600; }

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
}

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card { width: 340px; }