:root {
  --ink: #12223b;
  --ink-soft: #3f5874;
  --bg-1: #f5f8ff;
  --bg-2: #e6f0ff;
  --card: rgba(255, 255, 255, 0.86);
  --line: rgba(26, 72, 134, 0.2);
  --primary: #0f6fdd;
  --primary-dark: #0c56a9;
  --danger: #bf2f3f;
  --ok: #118a4f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Sora", sans-serif;
  background: radial-gradient(circle at 10% 15%, var(--bg-2), transparent 55%),
    radial-gradient(circle at 90% 20%, #d8ecff, transparent 40%),
    linear-gradient(160deg, #f8fbff, var(--bg-1));
}

.ambient {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(
      rgba(16, 53, 98, 0.05) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(16, 53, 98, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.75);
  border-bottom: 1px solid var(--line);
}

.brand {
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.chip {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--ink-soft);
}

.shell {
  width: min(760px, 92vw);
  margin: 28px auto 60px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 18px 40px rgba(10, 30, 64, 0.1);
}

.reveal {
  animation: fade-up 420ms ease;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
}

.muted {
  color: var(--ink-soft);
  margin: 0 0 14px;
}

.form-grid {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.95rem;
}

input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 12px;
  font-size: 1rem;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.95);
}

input:focus {
  outline: 2px solid rgba(15, 111, 221, 0.2);
  border-color: var(--primary);
}

button {
  border: 0;
  border-radius: 12px;
  padding: 12px 14px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.95rem;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #2295f3);
}

button:hover {
  filter: brightness(0.98);
}

button.danger {
  background: linear-gradient(135deg, var(--danger), #d3525f);
}

.alert {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #ffe9ec;
  color: #8f1f2d;
}

.alert.warning {
  background: #fff4d8;
  color: #845400;
}

.alert.ok {
  background: #e5f7ef;
  color: var(--ok);
}

.qr-wrapper {
  display: flex;
  justify-content: center;
  margin: 14px 0;
}

.qr {
  width: min(320px, 74vw);
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 10px;
}

.link {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  word-break: break-all;
  font-size: 0.86rem;
  color: var(--primary-dark);
  margin-bottom: 16px;
}

.mono {
  font-family: "IBM Plex Mono", monospace;
  color: var(--ink-soft);
}

.inline-form {
  margin-top: 8px;
}

@media (max-width: 640px) {
  .topbar {
    padding: 12px;
  }

  .shell {
    width: 94vw;
  }

  .card {
    border-radius: 14px;
    padding: 16px;
  }
}