/* 雷克斯競品分析網站 - 樣式 */
* { box-sizing: border-box; }
body { font-family: "Microsoft JhengHei", "Segoe UI", sans-serif; margin: 0; padding: 0; background: #f5f5f5; color: #333; }
.hidden { display: none !important; }

.section { max-width: 960px; margin: 0 auto; padding: 1.5rem; }
.site-header { text-align: center; margin-bottom: 2rem; }
.site-header h1 { font-size: 1.75rem; color: #1a1a1a; }

/* 登入區塊 */
.login-card { background: #fff; border-radius: 8px; padding: 2rem; box-shadow: 0 2px 8px rgba(0,0,0,0.08); margin-bottom: 2rem; }
.login-card h2 { margin-top: 0; }
.login-card input[type="email"] { width: 100%; padding: 0.6rem; margin-bottom: 0.75rem; border: 1px solid #ccc; border-radius: 4px; }
.login-card button { padding: 0.6rem 1.2rem; background: #2563eb; color: #fff; border: none; border-radius: 4px; cursor: pointer; }
.login-card button:hover { background: #1d4ed8; }
.message { font-size: 0.9rem; margin-top: 0.5rem; min-height: 1.2em; }
.message.success { color: #059669; }
.message.error { color: #dc2626; }

/* 遇到問題了嗎 */
.help-block { background: #fff; border-radius: 8px; padding: 1rem 2rem; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
#help-btn { padding: 0.5rem 1rem; background: #64748b; color: #fff; border: none; border-radius: 4px; cursor: pointer; }
#help-btn:hover { background: #475569; }
#help-form-wrap { margin-top: 1rem; }
#help-form input, #help-form textarea { width: 100%; padding: 0.5rem; margin-bottom: 0.5rem; border: 1px solid #ccc; border-radius: 4px; }
#help-form button { padding: 0.5rem 1rem; background: #64748b; color: #fff; border: none; border-radius: 4px; cursor: pointer; }

/* 已登入：頂部導覽 */
.app-header { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; padding: 1rem; background: #fff; border-radius: 8px; margin-bottom: 1rem; box-shadow: 0 2px 6px rgba(0,0,0,0.06); }
.app-header h1 { margin: 0; font-size: 1.25rem; flex: 1; }
.category-nav { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.nav-item { padding: 0.4rem 0.8rem; border-radius: 4px; text-decoration: none; color: #333; }
.nav-item.active { background: #2563eb; color: #fff; }
.nav-item.disabled { color: #94a3b8; cursor: not-allowed; }
#logout-btn { padding: 0.4rem 0.8rem; background: #94a3b8; color: #fff; border: none; border-radius: 4px; cursor: pointer; }
#logout-btn:hover { background: #64748b; }

/* 篩選與比較列 */
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; padding: 1rem; background: #fff; border-radius: 8px; margin-bottom: 1rem; }
.filter-wrap { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.filter-wrap input[type="number"] { width: 90px; padding: 0.4rem; border: 1px solid #ccc; border-radius: 4px; }
.filter-wrap button { padding: 0.4rem 0.8rem; border: 1px solid #ccc; border-radius: 4px; background: #f8fafc; cursor: pointer; }
#filter-btn { background: #2563eb; color: #fff; border-color: #2563eb; }
.compare-wrap { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; }
#compare-hint { font-size: 0.85rem; color: #64748b; }
#compare-btn { padding: 0.4rem 0.8rem; background: #059669; color: #fff; border: none; border-radius: 4px; cursor: pointer; }
#compare-btn:disabled { background: #cbd5e1; cursor: not-allowed; }

/* 產品清單 */
.product-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.product-card { background: #fff; border-radius: 8px; padding: 1rem; box-shadow: 0 2px 8px rgba(0,0,0,0.08); display: flex; flex-direction: column; }
.product-card .compare-cb { margin-bottom: 0.5rem; }
.product-card .product-image { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 4px; background: #e2e8f0; }
.product-card .product-name { font-weight: 600; margin: 0.5rem 0; }
.product-card .product-detail { font-size: 0.9rem; color: #475569; margin: 0.2rem 0; }
.product-card .product-price { font-size: 1.1rem; color: #059669; margin: 0.5rem 0; }
.product-card .product-links { margin-top: auto; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.product-card .product-links a { font-size: 0.85rem; color: #2563eb; }
.product-card .admin-actions { margin-top: 0.5rem; }
.product-card .admin-actions button { margin-right: 0.5rem; padding: 0.25rem 0.5rem; font-size: 0.85rem; cursor: pointer; border-radius: 4px; border: 1px solid #ccc; background: #f8fafc; }
.product-card .admin-actions button.edit-btn { background: #fef3c7; }
.product-card .admin-actions button.del-btn { background: #fee2e2; color: #b91c1c; }

/* 比較彈窗 */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 1rem; }
.modal-content { background: #fff; border-radius: 8px; padding: 1.5rem; max-width: 95vw; max-height: 90vh; overflow: auto; }
.modal-content h2 { margin-top: 0; }
#compare-table-wrap { overflow-x: auto; margin: 1rem 0; }
#compare-table-wrap table { border-collapse: collapse; min-width: 400px; }
#compare-table-wrap th, #compare-table-wrap td { border: 1px solid #e2e8f0; padding: 0.5rem; text-align: left; font-size: 0.9rem; }
#compare-table-wrap th { background: #f1f5f9; }
#close-compare-btn { padding: 0.5rem 1rem; background: #64748b; color: #fff; border: none; border-radius: 4px; cursor: pointer; }

/* 後台 */
.admin-bar { margin-top: 1rem; }
#admin-toggle-btn { padding: 0.5rem 1rem; background: #475569; color: #fff; border: none; border-radius: 4px; cursor: pointer; }
.admin-panel { background: #fff; border-radius: 8px; padding: 1.5rem; margin-top: 1rem; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.admin-panel h3 { margin-top: 0; }
.admin-panel form { display: grid; gap: 0.5rem; max-width: 400px; }
.admin-panel label { display: block; }
.admin-panel input { width: 100%; padding: 0.4rem; border: 1px solid #ccc; border-radius: 4px; }
.admin-panel button { padding: 0.5rem 1rem; margin-right: 0.5rem; margin-top: 0.5rem; cursor: pointer; border-radius: 4px; border: 1px solid #ccc; background: #f8fafc; }
.admin-panel #product-submit-btn { background: #2563eb; color: #fff; border-color: #2563eb; }
.admin-panel input[type="file"] { padding: 0.25rem 0; font-size: 0.9rem; }