:root {
  --bg: #0b0c10;
  --card: #111218;
  --text: #e8e8ef;
  --muted: #a8a8b6;
  --border: #232433;
  --btn: #1d4ed8;
  --btn2: #0f172a;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: radial-gradient(1200px 700px at 20% 0%, #111a2b, var(--bg));
  color: var(--text);
}

a { color: inherit; }

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 18px;
}

.shell {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(11, 12, 16, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.badge {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 999px;
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.button {
  border: 1px solid var(--border);
  background: var(--btn2);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

.button.primary {
  background: linear-gradient(180deg, #2563eb, var(--btn));
  border-color: rgba(37, 99, 235, 0.5);
}

.button:disabled { opacity: 0.5; cursor: not-allowed; }

.card {
  background: rgba(17, 18, 24, 0.9);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 900px) {
  .grid.two { grid-template-columns: 1fr 1fr; }
}

.h1 { font-size: 28px; margin: 0 0 6px; }
.h2 { font-size: 18px; margin: 0 0 10px; color: var(--muted); font-weight: 600; }
.p { margin: 0; color: var(--muted); line-height: 1.5; }
.small { font-size: 12px; color: var(--muted); }

.input {
  width: 100%;
  background: #0d0e14;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 12px;
  border-radius: 12px;
  outline: none;
}

.input:focus {
  border-color: rgba(37, 99, 235, 0.7);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

hr.sep {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 14px 0;
}

.kv {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
  font-size: 14px;
}
.kv div:first-child { color: var(--muted); }