:root {
  --green: #25d366;
  --green-dark: #128c7e;
  --bg: #f4f6f7;
  --card: #ffffff;
  --text: #1b1f23;
  --muted: #6b7280;
  --border: #e5e7eb;
  --danger: #dc2626;
}
* { 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 {
  background: var(--green-dark);
  color: #fff;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar h1 { font-size: 18px; margin: 0; font-weight: 600; }
.topbar a { color: #fff; text-decoration: none; opacity: 0.85; font-size: 14px; }
.topbar a:hover { opacity: 1; text-decoration: underline; }
.container { max-width: 900px; margin: 24px auto; padding: 0 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 { margin-top: 0; font-size: 16px; }
label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 4px; }
input[type=text], input[type=password], input[type=date], textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}
textarea { resize: vertical; min-height: 80px; }
button, .btn {
  background: var(--green);
  color: #073b2c;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 16px;
}
button:hover, .btn:hover { background: var(--green-dark); color: #fff; }
.btn-secondary { background: #e5e7eb; color: var(--text); }
.btn-danger { background: #fee2e2; color: var(--danger); }
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 { padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-sent { background: #d1fae5; color: #065f46; }
.badge-failed { background: #fee2e2; color: #991b1b; }
.badge-canceled { background: #e5e7eb; color: #374151; }
.error { background: #fee2e2; color: #991b1b; padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; font-size: 14px; }
.success { background: #d1fae5; color: #065f46; padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; font-size: 14px; }
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { width: 100%; max-width: 360px; }
.muted { color: var(--muted); font-size: 13px; }
form.inline { display: inline; }