* { box-sizing: border-box; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  background: #f5f6f8;
  color: #1a1a1a;
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: #1f2937;
  color: white;
}
.nav a { color: white; text-decoration: none; margin-left: 16px; }
.nav .brand { font-weight: 700; margin-left: 0; }
.container { max-width: 800px; margin: 32px auto; padding: 0 16px; }
.form { display: flex; flex-direction: column; gap: 12px; max-width: 400px; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; }
.form input, .form textarea { padding: 8px; border: 1px solid #ccc; border-radius: 6px; font-size: 15px; }
button {
  padding: 10px 16px;
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 15px;
}
button:hover { background: #1d4ed8; }
.flash { padding: 10px; border-radius: 6px; margin-bottom: 12px; }
.flash.error { background: #fee2e2; color: #991b1b; }
.campaign-list { display: flex; flex-direction: column; gap: 16px; }
.campaign-card {
  background: white;
  padding: 16px;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.link-box input {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 6px;
  margin-top: 4px;
}
.stats { color: #374151; }
.table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.table th, .table td { text-align: left; padding: 6px 10px; border-bottom: 1px solid #e5e7eb; font-size: 14px; }
.landing { text-align: center; }
.video-wrap { position: relative; padding-bottom: 56.25%; height: 0; margin: 20px 0; }
.video-wrap iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border-radius: 10px; }
.cta {
  display: inline-block;
  margin-top: 20px;
  padding: 14px 28px;
  background: #16a34a;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 18px;
}