/* ============================================================
   仙秦 GM 后台 · 移动端适配层（在 app.css 之后加载）
   仅展示层适配：不改动 app.js 的业务逻辑与原有 DOM 结构
   - ≤900px：左侧导航 → 底部抽屉式菜单；宽表格 → 卡片内横向滚动
   - ≤600px：手机端尺寸、间距、表单与触控热区优化
   - iPhone 安全区（刘海 / 底部横条）适配
   ============================================================ */

/* 移动端专用元素：桌面端默认隐藏 */
.nav-toggle, .nav-mask, .nav-handle { display: none; }

@media (max-width: 900px) {
  html { -webkit-text-size-adjust: 100%; }
  html, body { overflow-x: hidden; }
  body.app { display: block; min-height: 100vh; min-height: 100dvh; }

  .btn, .icon-btn, .nav a, .chip, .tag, .pager .btn {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
  }

  /* ---------- 顶栏 + 汉堡按钮 ---------- */
  .topbar { height: 56px; padding: 0 12px; gap: 6px; }
  .topbar h1 {
    flex: 1 1 auto; min-width: 0; font-size: 15px; letter-spacing: 1px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  }
  .topbar h1::before { height: 12px; margin-right: 7px; }
  .topbar-right { flex: 0 0 auto; }
  .topbar::before { width: 90px; }

  .nav-toggle {
    display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 4px; width: 44px; height: 44px; margin-left: -8px; flex: 0 0 44px;
    background: transparent; border: 1px solid transparent; border-radius: var(--radius);
    color: var(--text-2); cursor: pointer; transition: .18s;
  }
  .nav-toggle span {
    display: block; width: 18px; height: 2px; background: currentColor;
    transition: transform .2s, opacity .2s;
  }
  body.nav-open .nav-toggle {
    color: var(--brand); border-color: rgba(47, 214, 192, .3); background: rgba(47, 214, 192, .08);
  }
  body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .pill { font-size: 11.5px; padding: 4px 9px; gap: 6px; max-width: 44vw; overflow: hidden; }

  /* ---------- 内容区 ---------- */
  .content { padding: 14px 12px calc(30px + env(safe-area-inset-bottom)); }

  /* ---------- 底部抽屉式导航 ---------- */
  .side {
    position: fixed; left: 0; right: 0; bottom: 0; top: auto;
    width: 100%; flex: none; min-height: 0; max-height: 82vh; max-height: 82dvh;
    z-index: 36; overflow: hidden;
    border-right: none; border-top: 1px solid rgba(47, 214, 192, .4);
    border-radius: 12px 12px 0 0;
    box-shadow: 0 -18px 44px rgba(0, 0, 0, .72);
    padding-bottom: env(safe-area-inset-bottom);
    transform: translateY(102%); pointer-events: none;
    transition: transform .26s cubic-bezier(.22, .61, .36, 1);
  }
  body.nav-open .side { transform: none; pointer-events: auto; }

  .nav-mask {
    display: block; position: fixed; inset: 0; z-index: 35;
    background: rgba(3, 7, 9, .74);
    opacity: 0; pointer-events: none; transition: opacity .22s;
  }
  body.nav-open .nav-mask { opacity: 1; pointer-events: auto; }

  /* 锁背景滚动（position: fixed + 记录滚动位置，兼容 iOS Safari） */
  body.nav-locked { position: fixed; left: 0; right: 0; width: 100%; overflow: hidden; }

  .nav-handle {
    display: block; flex: 0 0 auto;
    width: 42px; height: 4px; margin: 9px auto 1px; border-radius: 2px;
    background: #2b3b43;
  }
  .brand { flex: 0 0 auto; padding: 8px 16px 10px; gap: 9px; }
  .brand::after { left: 16px; right: 16px; }
  .brand-mark { width: 30px; height: 30px; font-size: 14px; }
  .brand-text b { font-size: 14px; letter-spacing: 1.5px; }
  .brand-text span { font-size: 10.5px; letter-spacing: 1.5px; }

  .nav {
    flex: 1 1 auto; min-height: 0; overflow-y: auto;
    -webkit-overflow-scrolling: touch; overscroll-behavior: contain;
    display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
    padding: 10px 12px 12px;
  }
  .nav a {
    min-height: 46px; padding: 8px 10px; font-size: 13px; line-height: 1.3;
    align-items: center;
  }
  .nav a i { flex: 0 0 auto; }
  .nav a.on::before { top: 8px; bottom: 8px; }

  .side-foot {
    flex: 0 0 auto; padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
    font-size: 11.5px;
  }
  .side-foot a {
    display: inline-flex; align-items: center; min-height: 32px; padding: 0 8px;
  }

  /* ---------- 卡片 / 栅格 ---------- */
  /* 防止 grid / flex 子项被宽表格的 min-content 撑破页面宽度 */
  .content, #view, .grid, .grid > *, .card, .card-b { min-width: 0; }
  .grid.c4 { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
  .grid.c2 { grid-template-columns: 1fr; gap: 10px; }
  .card-h { padding: 10px 12px; flex-wrap: wrap; gap: 6px; }
  .card-h h3 { font-size: 13px; letter-spacing: 1px; }
  .card-b { padding: 12px; }
  .stat .v { font-size: 24px; }
  .stat::after { left: 12px; right: 12px; bottom: 10px; }

  /* ---------- 表格：卡片内横向滚动，页面不出现横向滚动条 ---------- */
  .table-scroll {
    width: 100%; max-width: 100%; overflow-x: auto; overflow-y: hidden;
    -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain;
  }
  .table-scroll > table { width: 100%; }
  .table-scroll.wide-1 > table { min-width: 560px; }
  .table-scroll.wide-2 > table { min-width: 720px; }
  th, td { padding: 8px 10px; font-size: 13px; }
  th { font-size: 11.5px; letter-spacing: 1px; }
  .empty { padding: 24px 12px; font-size: 13px; }

  /* ---------- 表单：输入区全宽、16px 字号避免 iOS 自动放大 ---------- */
  input[type=text], input[type=password], input[type=number], input[type=time],
  input[type=date], input[type=search], select, textarea {
    min-height: 44px; padding: 10px 12px; font-size: 16px;
    max-width: 100%;
  }
  textarea { min-height: 96px; line-height: 1.55; }
  .field { margin-bottom: 12px; }
  .field > span { font-size: 12px; letter-spacing: 1px; }

  .form-row { gap: 10px; align-items: stretch; }
  .form-row .field { flex: 1 1 100% !important; min-width: 0 !important; margin: 0 0 10px; }
  .form-row .field:last-child { margin-bottom: 0; }

  .toolbar { gap: 8px; }
  .toolbar > input[type=text], .toolbar > input[type=number],
  .toolbar > input[type=search], .filters input[type=text] { width: 100% !important; }
  .toolbar .grow { flex: 1 1 100%; }

  /* ---------- 触控热区 ≥ 44px ---------- */
  .btn {
    min-height: 44px; padding: 10px 16px; font-size: 14px;
    justify-content: center;
  }
  .btn-sm { min-height: 44px; padding: 8px 14px; font-size: 13px; }
  .icon-btn {
    width: 44px; height: 44px; padding: 0;
    display: inline-flex; align-items: center; justify-content: center; font-size: 22px;
  }
  .pager { justify-content: center; flex-wrap: wrap; gap: 10px; padding: 12px; }
  .pager span { flex: 1 0 100%; text-align: center; order: -1; }
  .check { min-height: 44px; }
  .check input { width: 20px; height: 20px; }

  /* ---------- 邮件附件等行内控件：允许换行 ---------- */
  .item-row { flex-wrap: wrap; gap: 8px; }
  .item-row .grow { flex: 1 1 100%; }
  .item-row input[type=number], .item-row select { flex: 1 1 30%; width: auto; }
  .item-row .di-key { flex: 1 1 100%; }
  .item-row .di-num, .item-row .di-rate, .item-row select.di-bind { flex: 1 1 30%; width: auto; }
  .item-row .di-name { flex: 1 1 100%; }
  .item-row .icon-btn { flex: 0 0 44px; }

  /* ---------- 右侧详情抽屉：手机端全宽 ---------- */
  .drawer { width: 100%; max-width: 100%; border-left: none; }
  .drawer-head { padding: 12px 14px; }
  .drawer-head h2 { font-size: 14px; }
  .drawer-body {
    padding: 14px 14px calc(44px + env(safe-area-inset-bottom));
    -webkit-overflow-scrolling: touch; overscroll-behavior: contain;
  }
  .kv { grid-template-columns: 84px 1fr; gap: 7px 10px; font-size: 13px; }
  .kv span { word-break: break-word; }
  .sect { margin-top: 18px; }
  .chips { max-height: none; }

  /* ---------- 弹窗：贴底、全宽、可滚动 ---------- */
  .modal-mask { padding: 10px; align-items: flex-end; }
  .modal {
    width: 100%; max-height: 92vh; max-height: 92dvh;
    display: flex; flex-direction: column; overflow: hidden;
  }
  .modal-h { padding: 12px 14px; flex: 0 0 auto; }
  .modal-b { padding: 14px; overflow: auto; -webkit-overflow-scrolling: touch; }
  .modal-f {
    padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
    flex-wrap: wrap; flex: 0 0 auto;
  }
  .modal-f .btn { flex: 1 1 auto; }

  .toast { bottom: calc(24px + env(safe-area-inset-bottom)); max-width: 88vw; font-size: 13px; }
}

/* ============================================================
   ≤600px：主流手机（360 / 375 / 390 / 414 / 430）精细适配
   ============================================================ */
@media (max-width: 600px) {
  .content { padding: 12px 10px calc(26px + env(safe-area-inset-bottom)); }
  .topbar { padding: 0 10px; }
  .topbar h1 { font-size: 14.5px; letter-spacing: .5px; }
  .pill { font-size: 11px; padding: 4px 8px; }
  .brand { padding: 8px 14px 10px; }
  .nav { padding: 10px 10px 12px; gap: 5px; }
  .nav a { font-size: 12.5px; padding: 8px 8px; min-height: 46px; }
  .card-b { padding: 12px 10px; }
  .card-h { padding: 10px; }
  .stat .v { font-size: 22px; }
  .grid.c4 { gap: 8px; }
  .toolbar > .btn { flex: 1 1 auto; }
  th, td { padding: 8px; }
}

/* 横屏小高度：抽屉占满，优先保证导航可见 */
@media (max-width: 900px) and (max-height: 480px) {
  .side { max-height: 94vh; max-height: 94dvh; }
  .brand { display: none; }
  .nav-handle { margin-top: 7px; }
}

/* ============================================================
   登录页
   ============================================================ */
@media (max-width: 900px) {
  body.guest {
    min-height: 100vh; min-height: 100dvh;
    align-items: flex-start; overflow-x: hidden;
  }
  .login-wrap { padding: 48px 16px calc(24px + env(safe-area-inset-bottom)); }
  .login-card { width: 100%; max-width: 400px; padding: 30px 20px 22px; }
  .login-card input { font-size: 16px; min-height: 46px; }
  .login-card .btn { min-height: 48px; font-size: 15px; }
  .login-sub { margin-bottom: 20px; }
}

@media (max-width: 360px) {
  .login-wrap { padding: 32px 12px 20px; }
  .login-card { padding: 26px 16px 18px; }
}