:root{--bg:#111;--surface:#1d1f23;--card:#fff;--text:#111;--muted:#6b7280;--border:#e5e7eb;--primary:#111827;--accent:#2563eb;--tableHead:#0f172a}
:root{--push:#fff7ed;--pull:#eff6ff;--legs:#f0fdf4;--mix:#f5f3ff;--rest:#f8fafc}

/* 深色模式變數 */
html[data-theme='dark']{--card:#0f172a;--text:#e5e7eb;--muted:#94a3b8;--border:#243244;--primary:#0b1220;--accent:#3b82f6;--tableHead:#0b1220}
html[data-theme='dark']{--push:#391f0c;--pull:#0b1a33;--legs:#0d2616;--mix:#1f1a33;--rest:#0b1220}
*{box-sizing:border-box}
html,body{height:100%}
html{font-size:16px}
body{margin:0;font-family:"Noto Sans TC",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";color:var(--text);background:#f7f7f9}
html[data-theme='dark'] body{background:#0b1220}

/* 頂部條 */
.topbar{background:var(--bg);color:#cbd5e1;border-bottom:1px solid #2a2f3a}
html[data-theme='dark'] .topbar{background:#0b1220;color:#94a3b8;border-bottom-color:#1f2937}
.topbar .container{max-width:1280px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between}
.breadcrumbs{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.breadcrumbs .sep{margin:0 6px;color:#64748b}
.actions .icon{display:inline-block;margin-left:12px;opacity:.8}

/* 主版型 */
.layout{max-width:1280px;margin:0 auto;padding:16px;display:grid;grid-template-columns:1fr 320px;gap:16px}
.content{min-width:0}
.sidebar{min-width:0}

.page-title{margin:6px 0 12px;font-size:18px;font-weight:700}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--border);border-radius:8px;box-shadow:0 1px 2px rgba(0,0,0,.04);padding:16px;margin-bottom:16px}
.card h2{margin:0 0 12px;font-size:16px}
.card h3{margin:8px 0;font-size:14px}

/* 表格通用 */
.table-wrapper{overflow:auto}
.table-wrapper.compact{max-height:70vh}
table{border-collapse:separate;border-spacing:0;width:100%;font-size:13px}
th,td{padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:top}
thead th{position:sticky;top:0;background:#f4f6f9;color:#111;border-bottom:1px solid var(--border);z-index:1}
tbody tr:hover{background:#fafafa}

/* 星期色彩主題 */
.week-plan tbody tr{transition:background-color .2s,border-color .2s}
.week-plan tbody tr.t-push{background:var(--push)}
.week-plan tbody tr.t-pull{background:var(--pull)}
.week-plan tbody tr.t-legs{background:var(--legs)}
.week-plan tbody tr.t-mix{background:var(--mix)}
.week-plan tbody tr.t-rest{background:var(--rest)}

/* 訓練表格 */
.plan-table .col-phase{width:160px}
.plan-table .col-weeks{width:90px;text-align:center}
.plan-table .col-calorie{width:120px;text-align:right}
.plan-table .col-protein{width:110px;text-align:right}
.plan-table .col-note{width:200px}
.plan-table td ul{margin:0;padding-left:18px}
.plan-table .phase{font-weight:600}
.plan-table .cal,.plan-table .pro{text-align:right;white-space:nowrap}

/* 右側列表 */
.log-table th,.log-table td{text-align:left}
.log-table th:nth-child(1),.log-table td:nth-child(1){width:42px;text-align:center}

/* 推薦清單 */
.recommend{margin:0 0 8px;padding-left:18px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* 頁腳 */
.footer{border-top:1px solid var(--border);background:#fafafa;color:var(--muted)}
.footer .container{max-width:1280px;margin:0 auto;padding:16px}

/* 其它區塊容器 */
.extras .container{max-width:1280px;margin:0 auto;padding:0 16px 24px}
.shopping-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.shopping-grid .shop-col h3{margin:0 0 8px;font-size:14px}
.shopping-grid ul{margin:0;padding-left:18px}
.muted{color:#6b7280;margin-top:12px}

/* 購物清單色彩標籤 */
.shop-col{border:1px solid var(--border);border-radius:8px;padding:12px;background:#fff}
.shop-col.cat-protein{border-left:6px solid #ef4444;background:linear-gradient(180deg,rgba(239,68,68,.08),transparent)}
.shop-col.cat-carbs{border-left:6px solid #f59e0b;background:linear-gradient(180deg,rgba(245,158,11,.08),transparent)}
.shop-col.cat-fats{border-left:6px solid #10b981;background:linear-gradient(180deg,rgba(16,185,129,.08),transparent)}
.shop-col.cat-produce{border-left:6px solid #3b82f6;background:linear-gradient(180deg,rgba(59,130,246,.08),transparent)}

/* RWD */
@media (max-width: 1024px){
  .layout{grid-template-columns:1fr}
  .sidebar{order:-1}
}

@media (max-width: 640px){
  th,td{padding:8px 10px}
  .grid-2{grid-template-columns:1fr}
  .shopping-grid{grid-template-columns:1fr 1fr}
}

/* 行動版懸浮按鈕 */
.fab{position:fixed;right:16px;bottom:16px;width:44px;height:44px;border-radius:999px;border:1px solid var(--border);background:#111;color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(0,0,0,.2);cursor:pointer;z-index:1000}
.fab:hover{filter:brightness(1.06)}
@media (min-width: 1025px){.fab{display:none}}
.fab.theme{right:68px;background:#2563eb;border-color:#1e40af}
@media (min-width: 1025px){.fab.theme{display:flex}}
.fab.theme{right:68px;background:#2563eb;border-color:#1e40af}

/* 緊湊模式（行動裝置或使用者手動切換） */
body.compact .page-title{font-size:16px}
body.compact th,body.compact td{padding:6px 8px}
body.compact table{font-size:12px}
body.compact .card{padding:12px;margin-bottom:12px}
body.compact .layout{padding:12px;gap:12px}
body.compact .grid-2{gap:12px}

/* 小螢幕自動緊湊（若未被使用者覆寫） */
@media (max-width: 768px){
  html:not(.compact) body:not(.compact){
    font-size:14px;
  }
  html:not(.compact) body:not(.compact) th,
  html:not(.compact) body:not(.compact) td{padding:8px 10px}
  html:not(.compact) body:not(.compact) table{font-size:12.5px}
  html:not(.compact) body:not(.compact) .card{padding:12px;margin-bottom:12px}
  html:not(.compact) body:not(.compact) .layout{padding:12px;gap:12px}
}

/* 行動版卡片化表格（閱讀性提升） */
@media (max-width: 768px){
  table.stack-mobile thead{display:none}
  table.stack-mobile tbody tr{display:block;border:1px solid var(--border);border-radius:8px;margin-bottom:12px;background:#fff}
  table.stack-mobile tbody tr:hover{background:#fff}
  table.stack-mobile tbody td{display:flex;gap:8px;padding:10px 12px;border-bottom:1px dashed var(--border)}
  table.stack-mobile tbody td:last-child{border-bottom:none}
  table.stack-mobile tbody td::before{content:attr(data-label);min-width:92px;color:#6b7280;font-weight:500}
}