:root {
  --wa-green: #25D366;
  --wa-green-dark: #1DA851;
  --ink: #1b2430;
  --ink-soft: #5b6675;
  --line: #e6e8ec;
  --bg: #f5f6f8;
  --card: #ffffff;
  --danger: #b3413a;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(20, 25, 40, 0.06);
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.hidden { display: none !important; }

.topbar {
  background: linear-gradient(135deg, #2b2f77, #4c3a9e 60%, #7a3ea1);
  color: #fff;
  padding: 22px 16px 18px;
  text-align: center;
}
.topbar-inner h1 { margin: 0 0 4px; font-size: 1.35rem; }
.topbar-inner p { margin: 0; opacity: .9; font-size: .85rem; }

.content { max-width: 980px; margin: 0 auto; padding: 18px 12px 80px; }

.panel-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.panel-card h2 { margin-top: 0; }

label { display: block; font-size: .82rem; font-weight: 600; color: var(--ink-soft); margin: 10px 0 4px; }
input[type=text], input[type=password], input[type=number], select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: .95rem;
  background: #fff;
  color: var(--ink);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; font-weight: 500; color: var(--ink); margin-top: 14px; }
.checkbox-row input { width: auto; }

.btn-primary, .btn-secondary, .btn-danger {
  border: none;
  border-radius: 10px;
  padding: 11px 16px;
  font-weight: 700;
  font-size: .92rem;
  cursor: pointer;
}
.btn-primary { background: var(--ink); color: #fff; margin-top: 16px; width: 100%; }
.btn-secondary { background: #eef0f3; color: var(--ink-soft); }
.btn-danger { background: #fdeceb; color: var(--danger); }
.error-text { color: var(--danger); font-size: .85rem; min-height: 1.2em; margin-top: 8px; }

.dash-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}
.dash-toolbar-actions { display: flex; gap: 8px; }
.dash-toolbar-actions button { padding: 9px 14px; }

.tabs {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  flex: 1 1 auto;
}
.tab-btn {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.tab-btn.active { background: var(--ink); border-color: var(--ink); color: #fff; }

.group-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 14px;
  overflow: hidden;
}
.group-card h3 { margin: 0; padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: .98rem; }

.admin-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid #f0f1f4;
}
.admin-row:last-child { border-bottom: none; }
.admin-row.soldout { opacity: .55; }
.admin-row .item-info { flex: 1 1 auto; min-width: 0; }
.admin-row .item-name { font-weight: 600; font-size: .9rem; }
.admin-row .item-meta { font-size: .76rem; color: var(--ink-soft); margin-top: 2px; }
.admin-row .item-price { font-weight: 700; font-size: .88rem; min-width: 70px; text-align: right; }
.admin-row .badge-custom {
  font-size: .68rem; font-weight: 700; color: #4c3a9e; background: #eef0ff;
  padding: 2px 7px; border-radius: 999px;
}
.admin-row .edit-btn {
  border: 1px solid var(--line); background: #fafafa; border-radius: 8px;
  padding: 6px 10px; font-size: .8rem; font-weight: 600; cursor: pointer; color: var(--ink);
}

.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(10,12,20,.45);
  display: none; align-items: center; justify-content: center;
  z-index: 60; padding: 16px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff; width: 100%; max-width: 480px; max-height: 90vh;
  overflow-y: auto; border-radius: 16px; padding: 4px 20px 20px;
}
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.modal-head h2 { margin: 0; font-size: 1.05rem; }
.icon-btn { border: none; background: #f0f1f4; width: 30px; height: 30px; border-radius: 50%; font-size: .95rem; cursor: pointer; }
.modal-actions { display: flex; gap: 10px; margin-top: 16px; }
.modal-actions .btn-primary { margin-top: 0; flex: 1 1 auto; }