* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --purple: #6b4e71;
  --purple-light: #efe6f1;
  --green: #5a7d5a;
  --bg: #faf8f5;
  --card: #ffffff;
  --border: #e5ded5;
  --text: #3a3530;
  --muted: #8a8378;
}

body {
  font-family: "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  background: var(--purple);
  color: #fff;
  padding: 20px 32px;
}
header h1 { font-size: 22px; font-weight: 700; }
header .sub { font-size: 13px; opacity: 0.85; margin-top: 4px; }

main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 20px;
  padding: 20px 32px;
  max-width: 1280px;
  margin: 0 auto;
}

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.panel h2 { font-size: 16px; color: var(--purple); margin-bottom: 12px; }

/* 產品庫 */
#search {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 10px;
}
.add-product { display: flex; gap: 8px; margin-bottom: 10px; }
.add-product input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fffbec;
}
.add-product button {
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  background: var(--purple);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
}
.add-product button:disabled { opacity: 0.5; cursor: wait; }
.product-item .custom-badge {
  font-size: 10px;
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 4px;
  padding: 0 4px;
  margin-left: 4px;
}
.product-item .del-custom {
  border: none;
  background: none;
  color: #c0574f;
  font-size: 14px;
  cursor: pointer;
  padding: 2px 6px;
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.chips button {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
  cursor: pointer;
  color: var(--muted);
}
.chips button.active {
  background: var(--purple);
  border-color: var(--purple);
  color: #fff;
}

.product-list { max-height: 560px; overflow-y: auto; }
.product-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px solid #f0ece6;
  cursor: pointer;
  border-radius: 6px;
}
.product-item:hover { background: var(--purple-light); }
.product-item .info { flex: 1; }
.product-item .name { font-size: 14px; font-weight: 500; }
.product-item .meta { font-size: 12px; color: var(--muted); margin-top: 2px; }
.product-item .add {
  color: var(--purple);
  font-size: 18px;
  font-weight: 700;
  padding: 0 6px;
}
.product-item.in-blend { opacity: 0.45; pointer-events: none; }

/* 配方表 */
.blend-head { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.blend-head h2 { margin-bottom: 0; }
#recipeName {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fffbec;
}

#blendTable { width: 100%; border-collapse: collapse; }
#blendTable th {
  text-align: left;
  font-size: 12px;
  color: var(--muted);
  padding: 6px 8px;
  border-bottom: 2px solid var(--border);
}
#blendTable td { padding: 8px; border-bottom: 1px solid #f0ece6; font-size: 14px; }
#blendTable .item-name { font-weight: 500; }
#blendTable .item-size { font-size: 12px; color: var(--muted); }
#blendTable input.qty {
  width: 64px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  text-align: right;
  background: #fffbec;
}
#blendTable .unit { font-size: 12px; color: var(--muted); margin-left: 4px; }
#blendTable .subtotal { font-weight: 600; text-align: right; }
#blendTable .remove {
  border: none; background: none; color: #c0574f;
  font-size: 16px; cursor: pointer; padding: 2px 6px;
}

.hint { font-size: 12px; color: var(--muted); margin: 10px 0; }

.summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
}
.summary > div {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
}
.summary span { display: block; font-size: 12px; color: var(--muted); }
.summary strong { font-size: 20px; }
.summary .total { background: var(--purple-light); border-color: var(--purple); }
.summary .total strong { color: var(--purple); }

.actions { display: flex; gap: 10px; margin: 18px 0; }
.actions button {
  padding: 9px 18px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 14px;
  cursor: pointer;
}
.actions button.primary { background: var(--purple); border-color: var(--purple); color: #fff; }
.actions button.danger { color: #c0574f; }
.actions button:hover { filter: brightness(0.95); }

.saved-title { margin-top: 8px; }
.saved-list { display: flex; flex-direction: column; gap: 8px; }
.saved-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.saved-item .r-name { font-weight: 600; flex: 1; }
.saved-item .r-meta { font-size: 12px; color: var(--muted); }
.saved-item button {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
}
.saved-item button.del { color: #c0574f; }

footer {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  padding: 20px;
}

#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
#toast.show { opacity: 1; }

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