:root {
  --bg: #020617;
  --bg2: #0f172a;
  --card: #111827;
  --border: #1f2937;
  --accent: #22c55e;
  --accent2: #22d3ee;
  --text: #e5e7eb;
  --muted: #9ca3af;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #111827 0, #020617 55%);
  color: var(--text);
}

a { color: var(--accent2); text-decoration: none; }

header {
  background: rgba(15,23,42,.9);
  border-bottom: 1px solid var(--border);
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  z-index: 20;
}

.logo { font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }

.container {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 16px;
}

.card {
  background: radial-gradient(circle at top left, #111827, #020617);
  border-radius: 16px;
  border: 1px solid rgba(148,163,184,.4);
  padding: 16px 18px;
  margin-bottom: 18px;
  box-shadow: 0 18px 45px rgba(0,0,0,.5);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  background-image: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #020617;
  box-shadow: 0 10px 30px rgba(34,197,94,.35);
}

.btn-outline {
  background: transparent;
  color: var(--accent2);
  border: 1px solid rgba(148,163,184,.5);
  box-shadow: none;
}

.btn-small { padding: 4px 10px; font-size: 13px; }

input, select, textarea {
  width: 100%;
  padding: 8px 10px;
  margin-top: 4px;
  border-radius: 10px;
  border: 1px solid rgba(148,163,184,.5);
  background: rgba(15,23,42,.9);
  color: var(--text);
}

label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  padding: 8px 10px;
  border-bottom: 1px solid rgba(30,64,175,.4);
  text-align: left;
}

th { color: var(--muted); font-weight: 500; }

.alert {
  padding: 8px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
  font-size: 13px;
}

.alert-ok { background: rgba(22,163,74,.15); border: 1px solid #16a34a; }

.alert-err { background: rgba(248,113,113,.15); border: 1px solid #ef4444; }

.grid-2 {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
}

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
}