*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f0f2f5;
  color: #1a1a1a;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

nav {
  position: fixed; top: 0; width: 100%;
  display: flex; align-items: center; gap: 1rem;
  padding: .75rem 1.5rem;
  background: #fff; border-bottom: 1px solid #ddd;
}
nav .brand { font-weight: 700; margin-right: auto; }

.card {
  background: #fff; border-radius: 12px; padding: 2.5rem;
  max-width: 480px; width: 90%; text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,.08);
}
.card.card-wide { max-width: 640px; text-align: left; margin: 5rem auto 2rem; }
.card h1 { margin-bottom: .75rem; }
.card .subtitle { color: #555; margin-bottom: 1.5rem; }
.card.denied h1 { color: #c0392b; }

fieldset {
  border: 1px solid #ddd; border-radius: 8px;
  padding: 1rem 1.25rem 1.25rem; margin-bottom: 1.25rem;
}
fieldset legend {
  font-weight: 700; padding: 0 .5rem;
  display: flex; align-items: center; gap: .5rem;
}
form label {
  display: block; margin-top: .85rem;
  font-size: .85rem; font-weight: 600; color: #333;
}
form input, form textarea {
  display: block; width: 100%; margin-top: .3rem;
  padding: .5rem .6rem; border: 1px solid #ccc; border-radius: 6px;
  font-size: .9rem; font-family: inherit;
}
form textarea { resize: vertical; word-break: break-all; }

.badge {
  font-size: .7rem; font-weight: 600; padding: .15rem .55rem;
  border-radius: 999px; text-transform: uppercase; letter-spacing: .03em;
}
.badge-ok { background: #e3f5e7; color: #1e7d34; }
.badge-off { background: #fdecea; color: #c0392b; }

.message {
  padding: .65rem .9rem; border-radius: 6px;
  margin-bottom: 1.25rem; font-size: .9rem;
}
.message-ok { background: #e3f5e7; color: #1e7d34; }
.message-err { background: #fdecea; color: #c0392b; }

.btn {
  display: inline-block; padding: .65rem 1.4rem;
  background: #0078d4; color: #fff; border-radius: 6px;
  text-decoration: none; font-weight: 600; font-size: .95rem;
  transition: background .15s;
}
.btn:hover { background: #005a9e; }
.btn-sm { padding: .4rem .9rem; font-size: .85rem; }
.btn-secondary { background: #5c5c5c; }
.btn-secondary:hover { background: #3f3f3f; }

.info-box {
  text-align: left; margin-top: 1.25rem;
  padding: 1rem; background: #f7f8fa; border-radius: 8px;
  font-size: .9rem; word-break: break-all;
}
.info-box p { margin-bottom: .4rem; }

.actions { margin-top: 1.5rem; display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }