:root {
  --bg: #0b1220;
  --card: #0f1a2f;
  --border: rgba(255,255,255,0.08);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.65);
  --accent: #5dd6c5;
  --danger: #ff6b6b;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% 0%, rgba(93,214,197,0.18), transparent 60%),
              radial-gradient(900px 500px at 80% 20%, rgba(136,120,255,0.18), transparent 55%),
              var(--bg);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(11,18,32,0.6);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.topbar-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand { font-weight: 700; letter-spacing: 0.2px; }
.right { display: flex; align-items: center; gap: 10px; }
.chip {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  padding: 6px 10px;
  border-radius: 999px;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 16px 40px;
}

.card {
  border: 1px solid var(--border);
  background: rgba(15,26,47,0.75);
  border-radius: 14px;
  padding: 18px 18px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
}

h1 { margin: 0 0 6px; font-size: 26px; }
h2 { margin: 0 0 10px; font-size: 18px; }

.muted { color: var(--muted); }
.small { font-size: 12px; }

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 14px;
}
@media (min-width: 900px) {
  .grid { grid-template-columns: 1fr 1fr; }
}

.form { display: grid; gap: 12px; margin-top: 10px; }
label { display: grid; gap: 6px; }
label > span { font-size: 12px; color: var(--muted); }
input, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.25);
  color: var(--text);
  outline: none;
}
input:focus, textarea:focus { border-color: rgba(93,214,197,0.55); }

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 10px 0 6px;
}
.inline { display: flex; align-items: center; gap: 8px; }
.inline input { width: 180px; }

.btn {
  border: 1px solid rgba(93,214,197,0.35);
  background: rgba(93,214,197,0.12);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}
.btn:hover { background: rgba(93,214,197,0.18); }
.btn-ghost {
  border-color: var(--border);
  background: rgba(255,255,255,0.03);
}

.alert {
  border: 1px solid rgba(255,107,107,0.35);
  background: rgba(255,107,107,0.12);
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text);
  margin: 10px 0;
}

pre.qr, pre.log {
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.25);
  padding: 12px;
  border-radius: 12px;
  overflow: auto;
  min-height: 72px;
  white-space: pre-wrap;
  word-break: break-all;
}