:root {
  --bg: #0b1220;
  --card: #111a2e;
  --border: rgba(255,255,255,0.10);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.62);
  --primary: #4f46e5;
  --primarySoft: rgba(79,70,229,0.18);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: radial-gradient(1200px 600px at 20% -20%, rgba(79,70,229,0.35), transparent 55%),
              radial-gradient(900px 500px at 110% 10%, rgba(34,197,94,0.18), transparent 55%),
              var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }

.app { min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(17,26,46,0.7);
  backdrop-filter: blur(10px);
}
.brand { font-weight: 800; letter-spacing: -0.3px; }
.right { display: flex; gap: 10px; align-items: center; }
.pill {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(0,0,0,0.18);
}

.main { padding: 16px; flex: 1; }
.card {
  border: 1px solid var(--border);
  background: rgba(17,26,46,0.85);
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 18px 50px rgba(0,0,0,0.25);
}
h1, h2, h3 { margin: 0 0 10px; }
.hint { margin: 10px 0 0; color: var(--muted); font-size: 12px; min-height: 16px; }
.sub { color: var(--muted); font-size: 12px; margin-top: -6px; }

.grid { display: grid; gap: 10px; max-width: 420px; }
label span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.18);
  color: var(--text);
  outline: none;
}
input:focus { border-color: rgba(79,70,229,0.65); box-shadow: 0 0 0 3px var(--primarySoft); }

select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.18);
  color: var(--text);
  outline: none;
}
select:focus { border-color: rgba(79,70,229,0.65); box-shadow: 0 0 0 3px var(--primarySoft); }

.btn {
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 9px 12px;
  cursor: pointer;
  color: var(--text);
  background: rgba(255,255,255,0.08);
}
.btn.primary { background: var(--primary); }
.btn.ghost { background: transparent; border-color: var(--border); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.split {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 14px;
  margin-top: 14px;
}
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

.row { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.list { min-height: 420px; }
.conv-list { display: grid; gap: 8px; margin-top: 10px; }
.conv {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  cursor: pointer;
  background: rgba(0,0,0,0.12);
}
.conv:hover { border-color: rgba(79,70,229,0.45); }
.conv .t { font-weight: 700; font-size: 13px; }
.conv .m { color: var(--muted); font-size: 12px; margin-top: 4px; }

.detail { min-height: 420px; display: flex; flex-direction: column; gap: 10px; }
.messages {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: rgba(0,0,0,0.10);
  overflow: auto;
  min-height: 240px;
}
.msg { padding: 8px 10px; border-radius: 12px; margin: 6px 0; max-width: 78%; }
.msg.in { background: rgba(34,197,94,0.10); border: 1px solid rgba(34,197,94,0.25); }
.msg.out { margin-left: auto; background: rgba(79,70,229,0.12); border: 1px solid rgba(79,70,229,0.25); }
.msg .meta { color: var(--muted); font-size: 11px; margin-top: 4px; }

.orderbox {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: rgba(0,0,0,0.10);
}
.grid2 { display: grid; grid-template-columns: 200px 1fr; gap: 10px; }
@media (max-width: 900px) { .grid2 { grid-template-columns: 1fr; } }