/* responsive.css — 响应式断点 */
/* ------------------------------------------------------------------ responsive */

@media (max-width: 1180px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: minmax(0, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  /* 窄屏改为普通块级流：grid 的行会吃掉剩余高度，把这条导航撑高，
     而且 sticky 在 grid 里只能在自身网格区域内吸附，等于失效 */
  .app { display: block; min-height: 100vh; }
  .side {
    position: sticky; top: 0; height: auto;
    flex-direction: row; align-items: center;
    border-right: none; border-bottom: 1px solid var(--border); padding: 6px;
    overflow-x: auto; overflow-y: hidden; z-index: 40;
  }
  .team-switch { width: auto; margin: 0 6px 0 0; max-width: 160px; padding: 6px 8px; }
  .team-switch .ts-meta { display: none; }
  .nav { flex-direction: row; padding: 0; gap: 2px; }
  .nav-title, .side-foot { display: none; }
  .nav-item { padding: 6px 7px; white-space: nowrap; }
  .nav-item.active { background: var(--accent-subtle); }
  .nav-item.active svg { color: var(--accent-fg); }
  .nav-item .nav-count { display: none; }
  .nav-item span.lbl { display: none; }
  .topbar { position: static; padding: 8px 12px; flex-wrap: wrap; row-gap: 6px; }
  .content { padding: 14px 12px 60px; }
  .page-head h1 { font-size: 18px; }
  /* 详情页标题独占一行，编号与操作按钮落到第二行，避免长标题把按钮挤成窄条 */
  .issue-title-row { flex-wrap: wrap; row-gap: 6px; }
  .issue-title-row h1 { font-size: 19px; flex: 1 1 100%; }
  .issue-number { font-size: 19px; }
  .board {
    display: flex; grid-template-columns: none; align-items: stretch;
    gap: 10px; overflow-x: auto; padding-bottom: 4px;
    scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
    /* 右侧渐隐：遮住露出半列时被切碎的文字，同时提示还能向左滑 */
    -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 26px), transparent);
    mask-image: linear-gradient(to right, #000 calc(100% - 26px), transparent);
  }
  .board-col { flex: 0 0 84%; scroll-snap-align: start; }
  .board-card .move-btn { width: 28px; height: 28px; top: 2px; right: 2px; opacity: 0.8; }
  .board-card .move-btn svg { width: 15px; height: 15px; }
  .board-card .t { padding-right: 26px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .road-label-col { width: 160px; }
  .road-row .road-label-col { padding: 8px; font-size: 12px; }
  .road-month { font-size: 10px; }

  /* 窄屏下月份刻度放不下，改为横向滚动 + 冻结左侧名称列 */
  .roadmap { overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; }
  .road-head, .road-rows { min-width: 640px; }
  .road-head .road-label-col,
  .road-row .road-label-col {
    position: sticky; left: 0; z-index: 4;
    background: var(--canvas-subtle);
    border-right: 1px solid var(--border);
  }
  .road-head .road-label-col { background: var(--canvas-overlay); z-index: 5; }
  /* 冻结列右侧渐隐，遮住滑过边界的半截文字 */
  .road-row .road-label-col::after,
  .road-head .road-label-col::after {
    content: ""; position: absolute; left: 100%; top: 0; bottom: 0; width: 18px;
    pointer-events: none;
  }
  .road-row .road-label-col::after {
    background: linear-gradient(90deg, var(--canvas-subtle) 35%, transparent);
  }
  .road-head .road-label-col::after {
    background: linear-gradient(90deg, var(--canvas-overlay) 35%, transparent);
  }
  .road-hint { display: block; }
  .filterbar { padding: 8px; }
  .search { max-width: none; flex: 1 1 100%; }
  .field-row { grid-template-columns: 1fr; }
  .field-row.three { grid-template-columns: 1fr; }
  .modal-backdrop { padding: 4vh 10px 10px; }
  .ms-progress { width: 64px; }
}

@media (max-width: 560px) {
  .road-label-col { width: 132px; }
  .team-switch { max-width: 132px; }
  .page-head .actions { width: 100%; }
  .page-head .actions .btn { flex: 1; }
  #toast-root { right: 10px; left: 10px; bottom: 10px; }
  .toast { max-width: none; }
}