/* 12列CSS Grid布局系统 */

/* Grid容器基础样式 */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

/* Grid项目样式 */
.grid-item {
  /* 网格项目默认样式 */
  min-width: 0;
  min-height: auto;
}

/* 12列网格系统 */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-7 { grid-template-columns: repeat(7, minmax(0, 1fr)); }
.grid-cols-8 { grid-template-columns: repeat(8, minmax(0, 1fr)); }
.grid-cols-9 { grid-template-columns: repeat(9, minmax(0, 1fr)); }
.grid-cols-10 { grid-template-columns: repeat(10, minmax(0, 1fr)); }
.grid-cols-11 { grid-template-columns: repeat(11, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* Gap间距控制 */
.gap-2 { gap: var(--spacing-xs); }
.gap-4 { gap: var(--spacing-sm); }
.gap-6 { gap: var(--spacing-md); }
.gap-8 { gap: var(--spacing-lg); }

/* 自动列宽 */
.grid-auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
}

/* 对齐方式 */
.justify-items-start { justify-items: start; }
.justify-items-center { justify-items: center; }
.justify-items-end { justify-items: end; }

.items-start { align-items: start; }
.items-center { align-items: center; }
.items-end { align-items: end; }

.justify-center { justify-self: center; }
.align-center { align-self: center; }

/* Flexbox辅助类 */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.items-stretch { align-items: stretch; }
.items-baseline { align-items: baseline; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.justify-evenly { justify-content: space-evenly; }

/* Flex比例 */
.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-initial { flex: 0 1 auto; }
.flex-none { flex: none; }

/* 响应式网格类（与断点结合） */
@media screen and (max-width: 767px) {
  .sm\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media screen and (min-width: 768px) {
  .md\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .md\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .md\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media screen and (min-width: 1200px) {
  .lg\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .lg\:grid-cols-7 { grid-template-columns: repeat(7, minmax(0, 1fr)); }
  .lg\:grid-cols-8 { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .lg\:grid-cols-9 { grid-template-columns: repeat(9, minmax(0, 1fr)); }
  .lg\:grid-cols-10 { grid-template-columns: repeat(10, minmax(0, 1fr)); }
  .lg\:grid-cols-11 { grid-template-columns: repeat(11, minmax(0, 1fr)); }
  .lg\:grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
}

/* 网格行高 */
.auto-rows-min { grid-auto-rows: min-content; }
.auto-rows-max { grid-auto-rows: max-content; }
.auto-rows-fr { grid-auto-rows: minmax(0, 1fr); }

/* 跨列和跨行 */
.col-span-1 { grid-column: span 1 / span 1; }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }
.col-span-4 { grid-column: span 4 / span 4; }
.col-span-5 { grid-column: span 5 / span 5; }
.col-span-6 { grid-column: span 6 / span 6; }
.col-span-7 { grid-column: span 7 / span 7; }
.col-span-8 { grid-column: span 8 / span 8; }
.col-span-9 { grid-column: span 9 / span 9; }
.col-span-10 { grid-column: span 10 / span 10; }
.col-span-11 { grid-column: span 11 / span 11; }
.col-span-12 { grid-column: span 12 / span 12; }
.col-span-full { grid-column: 1 / -1; }

.row-span-1 { grid-row: span 1 / span 1; }
.row-span-2 { grid-row: span 2 / span 2; }
.row-span-3 { grid-row: span 3 / span 3; }
.row-span-4 { grid-row: span 4 / span 4; }
.row-span-5 { grid-row: span 5 / span 5; }
.row-span-6 { grid-row: span 6 / span 6; }

/* 列和行的起始/结束位置 */
.col-start-1 { grid-column-start: 1; }
.col-start-2 { grid-column-start: 2; }
.col-start-3 { grid-column-start: 3; }
.col-start-4 { grid-column-start: 4; }
.col-start-5 { grid-column-start: 5; }
.col-start-6 { grid-column-start: 6; }
.col-start-7 { grid-column-start: 7; }
.col-start-8 { grid-column-start: 8; }
.col-start-9 { grid-column-start: 9; }
.col-start-10 { grid-column-start: 10; }
.col-start-11 { grid-column-start: 11; }
.col-start-12 { grid-column-start: 12; }
.col-start-13 { grid-column-start: 13; }
.col-end-1 { grid-column-end: 1; }
.col-end-2 { grid-column-end: 2; }
.col-end-3 { grid-column-end: 3; }
.col-end-4 { grid-column-end: 4; }
.col-end-5 { grid-column-end: 5; }
.col-end-6 { grid-column-end: 6; }
.col-end-7 { grid-column-end: 7; }
.col-end-8 { grid-column-end: 8; }
.col-end-9 { grid-column-end: 9; }
.col-end-10 { grid-column-end: 10; }
.col-end-11 { grid-column-end: 11; }
.col-end-12 { grid-column-end: 12; }
.col-end-13 { grid-column-end: 13; }