.app-body {
  min-height: 100vh;
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(139, 92, 246, 0.18), transparent 60%),
    radial-gradient(700px 400px at 90% 0%, rgba(6, 182, 212, 0.12), transparent 55%),
    var(--bg, #0B0E14);
}

.app-top {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 22px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(11, 14, 20, 0.85);
  z-index: 10;
}

.app-nav { display: flex; gap: 8px; flex: 1; }
.nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: #94A3B8;
  padding: 8px 14px;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.nav-btn.active {
  color: #F8FAFC;
  border-color: rgba(139, 92, 246, 0.5);
  background: rgba(139, 92, 246, 0.15);
}
.app-user { display: flex; align-items: center; gap: 12px; }
.pill-balance {
  font-size: 0.85rem;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.35);
}

.app-main { max-width: 1100px; margin: 0 auto; padding: 28px 20px 60px; }
.view[hidden] { display: none !important; }

.login-card {
  max-width: 420px;
  margin: 48px auto;
  padding: 28px;
  border-radius: 20px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: rgba(17, 24, 39, 0.9);
}
.login-card h1 { font-family: Syne, sans-serif; margin: 0 0 8px; }
.local-box { margin-top: 22px; display: grid; gap: 10px; }
.local-box label { font-size: 0.85rem; color: #94A3B8; display: grid; gap: 6px; }
.local-box input {
  padding: 10px 12px; border-radius: 10px; border: 1px solid #334155;
  background: #070A10; color: #F8FAFC; font: inherit;
}
.err { color: #F87171; min-height: 1.2em; }

.chat-layout { display: grid; gap: 12px; height: calc(100vh - 160px); grid-template-rows: 1fr auto auto; }
.chat-log {
  overflow: auto;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 18px;
  padding: 16px;
  background: rgba(17, 24, 39, 0.65);
}
.msg { margin: 0 0 12px; max-width: 85%; padding: 10px 14px; border-radius: 14px; line-height: 1.45; }
.msg.user { margin-left: auto; background: linear-gradient(135deg, #8B5CF6, #06B6D4); color: #fff; }
.msg.assistant { background: #111827; border: 1px solid #334155; }
.msg.err { background: rgba(248, 113, 113, 0.12); border: 1px solid rgba(248, 113, 113, 0.4); color: #FCA5A5; }
.chat-form { display: flex; gap: 10px; }
.chat-form input {
  flex: 1; padding: 12px 14px; border-radius: 12px; border: 1px solid #334155;
  background: #070A10; color: #F8FAFC; font: inherit;
}
.tiny { font-size: 0.8rem; }

.credits-grid, .admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.panel {
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 18px;
  padding: 18px;
  background: rgba(17, 24, 39, 0.7);
}
.panel.wide { grid-column: 1 / -1; }
.panel h2 { font-family: Syne, sans-serif; font-size: 1.05rem; margin: 0 0 12px; }
.big-balance { font-size: 2.4rem; font-family: Syne, sans-serif; margin: 0 0 12px; }
.pkg-list { display: grid; gap: 10px; }
.pkg {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  padding: 12px; border-radius: 12px; border: 1px solid #334155;
}
.code-mini {
  margin-top: 10px; white-space: pre-wrap; word-break: break-word;
  background: #070A10; border-radius: 12px; padding: 12px; font-size: 0.8rem; max-height: 280px; overflow: auto;
}
.users { display: grid; gap: 10px; margin-top: 12px; }
.user-row {
  display: grid; gap: 6px; padding: 12px; border-radius: 12px; border: 1px solid #334155;
}
.user-row .actions { display: flex; gap: 8px; flex-wrap: wrap; }

@media (max-width: 720px) {
  .app-top { flex-wrap: wrap; }
  .app-nav { order: 3; width: 100%; }
  .chat-layout { height: calc(100vh - 220px); }
}