body { margin: 0; font-family: Arial, "Microsoft YaHei", sans-serif; background: #f6f7fb; color: #222; }
a { text-decoration: none; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 18px; background: #111827; color: #fff;
}
.brand { font-weight: 700; }
.topbar-right .link { color: #c7d2fe; margin-left: 12px; }
.topbar-right .link:hover { color: #fff; }

.container { max-width: 1100px; margin: 18px auto; padding: 0 14px; }

.h1 { margin: 10px 0 8px; font-size: 24px; }
.h2 { margin: 14px 0 10px; font-size: 18px; }
.sub { margin: 6px 0 14px; color: #374151; }
.muted { color: #6b7280; }

.card {
  background: #fff; border-radius: 14px; padding: 14px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

label { display: block; margin-top: 10px; margin-bottom: 6px; color: #374151; }
input, textarea {
  width: 100%; padding: 10px; border-radius: 10px;
  border: 1px solid #e5e7eb; outline: none;
  box-sizing: border-box;
}
input:focus, textarea:focus { border-color: #6366f1; }

.btn {
  display: inline-block; margin-top: 12px;
  padding: 10px 14px; border-radius: 10px;
  border: none; background: #4f46e5; color: #fff; cursor: pointer;
}
.btn:hover { background: #4338ca; }
.btn-danger { background: #dc2626; }
.btn-danger:hover { background: #b91c1c; }

.list { display: grid; gap: 10px; }
.list-item {
  display: flex; justify-content: space-between; align-items: center;
  background: #fff; border-radius: 14px; padding: 12px 14px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.05);
  color: #111827;
}
.list-item:hover { outline: 2px solid #c7d2fe; }
.title { font-weight: 700; }
.meta { color: #6b7280; font-size: 12px; }

.notes { max-height: 520px; overflow: auto; padding-right: 4px; }
.note {
  border: 1px solid #e5e7eb; border-radius: 12px;
  padding: 10px; margin-bottom: 10px; background: #fff;
}
.note-time { font-size: 12px; color: #6b7280; margin-bottom: 6px; }
.note.active { border-color: #6366f1; box-shadow: 0 0 0 3px rgba(99,102,241,0.20); }

.flash-wrap { margin: 10px 0; display: grid; gap: 8px; }
.flash { padding: 10px 12px; border-radius: 12px; background: #fff; border: 1px solid #e5e7eb; }
.flash-success { border-color: #10b981; }
.flash-danger { border-color: #ef4444; }
.flash-warning { border-color: #f59e0b; }
.flash-info { border-color: #3b82f6; }

.row { margin: 10px 0; }