/* ═══════════════════════════════════════════════════════════════
   昀美客服系統 — 統一 MUI 風格 Design System (2026-07-21)
   單一真實來源：色彩 / 字體 / 圓角 / 陰影(elevation) / 間距 / 元件
   用法：各頁 <link rel="stylesheet" href="/theme.css"> 或內嵌同一組 :root
   ═══════════════════════════════════════════════════════════════ */
:root {
  /* ─ Palette（品牌 LINE 綠當 primary，MUI 語彙鋪陳）─ */
  --primary: #06C755;
  --primary-dark: #05a647;
  --primary-light: #e7f8ee;
  --primary-contrast: #ffffff;
  --secondary: #1976d2;
  --secondary-light: #e3f2fd;
  --error: #d32f2f;
  --error-light: #fdecea;
  --warning: #ed6c02;
  --warning-light: #fff4e5;
  --success: #2e7d32;
  --success-light: #edf7ed;
  --info: #0288d1;
  --info-light: #e5f6fd;

  /* ─ Surfaces / Text（MUI 中性階）─ */
  --bg: #f4f6f8;
  --bg-default: #f4f6f8;
  --surface: #ffffff;
  --surface-2: #fafbfc;
  --surface-hover: #f0f2f5;
  --text: rgba(0,0,0,.87);
  --text-primary: rgba(0,0,0,.87);
  --text-secondary: rgba(0,0,0,.60);
  --text-muted: rgba(0,0,0,.38);
  --divider: rgba(0,0,0,.12);
  --border: rgba(0,0,0,.12);
  --urgent: #d32f2f;

  /* ─ Shape / Motion ─ */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --transition: all .2s cubic-bezier(.4,0,.2,1);

  /* ─ Elevation（MUI shadow scale）─ */
  --shadow-1: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.10);
  --shadow-2: 0 2px 4px rgba(16,24,40,.06), 0 4px 8px rgba(16,24,40,.08);
  --shadow-3: 0 4px 8px rgba(16,24,40,.08), 0 8px 16px rgba(16,24,40,.10);
  --shadow-4: 0 8px 16px rgba(16,24,40,.10), 0 16px 32px rgba(16,24,40,.12);

  /* ─ Spacing（8px 基準）─ */
  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px; --sp-5: 24px; --sp-6: 32px;

  /* ─ Type ─ */
  --font: 'Roboto','Noto Sans TC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}

/* ─ Base ─ */
.mui, .mui * { box-sizing: border-box; }
.mui { font-family: var(--font); color: var(--text-primary); background: var(--bg); -webkit-font-smoothing: antialiased; }

/* ─ Typography ─ */
.mui-h1 { font-size: 28px; font-weight: 700; letter-spacing: -.5px; }
.mui-h2 { font-size: 20px; font-weight: 700; letter-spacing: -.3px; }
.mui-h3 { font-size: 16px; font-weight: 600; }
.mui-subtitle { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.mui-body { font-size: 14px; line-height: 1.6; }
.mui-caption { font-size: 12px; color: var(--text-secondary); }
.mui-overline { font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--text-muted); }

/* ─ Card / Paper（elevation, 無硬邊框）─ */
.mui-card { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow-1); padding: var(--sp-4); transition: var(--transition); }
.mui-card:hover { box-shadow: var(--shadow-2); }
.mui-card-flat { background: var(--surface); border-radius: var(--radius); border: 1px solid var(--divider); padding: var(--sp-4); }

/* ─ Buttons（filled / outlined / text）─ */
.mui-btn { font-family: var(--font); font-size: 13px; font-weight: 600; border-radius: var(--radius-sm); padding: 8px 16px; cursor: pointer; border: none; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; line-height: 1; }
.mui-btn-filled { background: var(--primary); color: var(--primary-contrast); box-shadow: var(--shadow-1); }
.mui-btn-filled:hover { background: var(--primary-dark); box-shadow: var(--shadow-2); }
.mui-btn-outlined { background: transparent; color: var(--primary); border: 1px solid rgba(6,199,85,.5); }
.mui-btn-outlined:hover { background: var(--primary-light); border-color: var(--primary); }
.mui-btn-text { background: transparent; color: var(--text-secondary); }
.mui-btn-text:hover { background: var(--surface-hover); color: var(--primary); }
.mui-btn-sm { padding: 5px 12px; font-size: 12px; }

/* ─ Chip ─ */
.mui-chip { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: var(--radius-pill); font-size: 12px; font-weight: 500; background: var(--surface-hover); color: var(--text-secondary); border: 1px solid transparent; }
.mui-chip-primary { background: var(--primary-light); color: var(--primary-dark); }
.mui-chip-error { background: var(--error-light); color: var(--error); }
.mui-chip-warning { background: var(--warning-light); color: var(--warning); }
.mui-chip-success { background: var(--success-light); color: var(--success); }
.mui-chip-info { background: var(--info-light); color: var(--info); }
.mui-chip-outlined { background: transparent; border-color: var(--divider); }

/* ─ List item（hover / selected）─ */
.mui-list-item { display: flex; align-items: center; gap: var(--sp-3); padding: 10px 14px; border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition); border-left: 3px solid transparent; }
.mui-list-item:hover { background: var(--surface-hover); }
.mui-list-item.selected { background: var(--primary-light); border-left-color: var(--primary); }

/* ─ Stat tile（KPI）─ */
.mui-stat { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow-1); padding: var(--sp-4); }
.mui-stat .val { font-size: 26px; font-weight: 700; letter-spacing: -.5px; color: var(--text-primary); }
.mui-stat .label { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }
.mui-stat .delta-up { color: var(--success); font-size: 12px; font-weight: 600; }
.mui-stat .delta-down { color: var(--error); font-size: 12px; font-weight: 600; }

/* ─ Input（outlined）─ */
.mui-input { font-family: var(--font); font-size: 14px; padding: 10px 14px; border: 1px solid var(--divider); border-radius: var(--radius-sm); background: var(--surface); outline: none; transition: var(--transition); width: 100%; }
.mui-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(6,199,85,.12); }

/* ─ Section header ─ */
.mui-section-title { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 700; color: var(--text-primary); margin-bottom: var(--sp-3); }

/* ─ Scrollbar ─ */
.mui ::-webkit-scrollbar { width: 8px; height: 8px; }
.mui ::-webkit-scrollbar-thumb { background: rgba(0,0,0,.18); border-radius: 4px; }
.mui ::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,.28); }

/* ─ Priority accent（P0-P3）─ */
.pri-p0 { border-left: 4px solid var(--error); }
.pri-p1 { border-left: 4px solid var(--warning); }
.pri-p2 { border-left: 4px solid var(--info); }
.pri-p3 { border-left: 4px solid var(--text-muted); }

/* ═══ 統一主選單 App Nav（每頁一致的第一層導覽，2026-07-21）═══
   標準 HTML 片段（各頁貼同一份，把當前頁的 .app-nav-item 加 .active）：
   <nav class="app-nav">
     <div class="app-nav-brand"><span class="logo">昀</span>昀美客服系統</div>
     <div class="app-nav-items">
       <a class="app-nav-item" href="/" data-nav="desk">🏠 客服工作台</a>
       <a class="app-nav-item" href="/?panel=retag" data-nav="retag">🏷️ 每日貼標</a>
       <a class="app-nav-item" href="/marketing-radar.html" data-nav="radar">💰 待行銷</a>
       <a class="app-nav-item" href="/quote-backlog" data-nav="backlog">📋 待報價</a>
       <a class="app-nav-item" href="/quote-audit" data-nav="audit">🔴 應報未報</a>
     </div>
     <div class="app-nav-spacer"></div>
     <div class="app-nav-right"><span id="app-nav-user"></span></div>
   </nav>
*/
.app-nav { height: 48px; background: var(--surface); border-bottom: 1px solid var(--divider); box-shadow: var(--shadow-1); display: flex; align-items: center; padding: 0 16px; gap: 2px; position: relative; z-index: 300; font-family: var(--font); flex-shrink: 0; }
.app-nav-brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 15px; color: var(--text-primary); margin-right: 18px; white-space: nowrap; text-decoration: none; }
.app-nav-brand .logo { width: 28px; height: 28px; background: var(--primary); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: 13px; box-shadow: var(--shadow-1); }
.app-nav-items { display: flex; align-items: center; gap: 2px; height: 100%; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.app-nav-items::-webkit-scrollbar { display: none; }
.app-nav-item { display: flex; align-items: center; gap: 5px; padding: 0 15px; height: 100%; font-size: 13px; font-weight: 600; color: var(--text-secondary); text-decoration: none; border-bottom: 3px solid transparent; transition: var(--transition); cursor: pointer; white-space: nowrap; }
.app-nav-item:hover { color: var(--primary-dark); background: var(--surface-hover); }
.app-nav-item.active { color: var(--primary); border-bottom-color: var(--primary); background: var(--primary-light); }
.app-nav-spacer { flex: 1; }
.app-nav-right { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text-secondary); }
.app-nav-tools { position: relative; height: 100%; display: flex; align-items: center; }
.app-nav-more { height: 100%; padding: 0 14px; border: 0; border-bottom: 3px solid transparent; background: transparent; color: var(--text-secondary); font: 600 13px var(--font); cursor: pointer; }
.app-nav-more:hover, .app-nav-more.active { color: var(--primary-dark); background: var(--surface-hover); }
.app-nav-more.active { border-bottom-color: var(--primary); color: var(--primary); }
.app-nav-menu { display: none; position: absolute; top: 44px; right: 0; min-width: 170px; padding: 6px; background: var(--surface); border: 1px solid var(--divider); border-radius: var(--radius); box-shadow: var(--shadow-3); z-index: 1000; }
.app-nav-menu.open { display: block; }
.app-nav-menu .app-nav-item { height: 40px; padding: 0 12px; border: 0; border-radius: var(--radius-sm); }
.app-nav-menu .app-nav-item.active { border: 0; }
.pi-button { width: 28px; height: 28px; border: 1px solid var(--divider); border-radius: 50%; background: var(--surface); color: var(--text-secondary); font-weight: 800; cursor: pointer; }
.pi-button:hover { color: var(--primary); background: var(--primary-light); }
.pi-mask { display: none; position: fixed; inset: 0; background: rgba(15,23,42,.45); z-index: 9998; }
.pi-mask.open { display: block; }
.pi-panel { position: fixed; z-index: 9999; top: 0; right: 0; bottom: 0; width: min(560px,94vw); overflow: auto; background: var(--surface); color: var(--text-primary); box-shadow: var(--shadow-4); transform: translateX(105%); transition: transform .18s ease; }
.pi-panel.open { transform: none; }
.pi-panel header { position: sticky; top: 0; display: flex; align-items: center; gap: 12px; padding: 16px 20px; background: var(--surface); border-bottom: 1px solid var(--divider); }
.pi-panel h2 { margin: 0; flex: 1; font-size: 18px; }
.pi-close { border: 0; background: transparent; color: var(--text-secondary); font-size: 24px; cursor: pointer; }
.pi-body { padding: 18px 20px 40px; font-size: 14px; line-height: 1.7; }
.pi-body h3 { margin: 22px 0 8px; font-size: 13px; color: var(--text-secondary); }
.pi-body h3:first-child { margin-top: 0; }
.pi-body ul { margin: 0; padding-left: 20px; }
.pi-src { margin-bottom: 8px; padding: 10px 12px; border: 1px solid var(--divider); border-radius: var(--radius-sm); }
.pi-src code, .pi-src small { display: block; margin-top: 4px; word-break: break-word; }
.pi-src small { color: var(--text-secondary); }
.pi-tag { margin-left: 7px; padding: 2px 7px; border-radius: var(--radius-pill); font-size: 11px; }
.pi-tag.live { color: var(--success); background: var(--success-light); }
.pi-tag.static { color: var(--warning); background: var(--warning-light); }
.pi-warning { padding: 10px 12px; color: #8a5a1b; background: var(--warning-light); border-radius: var(--radius-sm); }
@media (max-width: 900px) { .app-nav { overflow: visible; } .app-nav-brand span:not(.logo) { display: none; } .app-nav-brand { margin-right: 4px; } .app-nav-item { padding: 0 9px; font-size: 12px; } .app-nav-right { display: none; } }
@media (max-width: 640px) {
  .app-nav-item { padding: 0 4px; font-size: 11px; }
  .app-nav-more { padding: 0 7px; font-size: 12px; }
}