/* ================================
   K8设计系统 - 工具类
   ================================ */

/* ================================
   Spacing Utilities - 间距工具类
   ================================ */

/* Margin utilities */
.k8-m-0 { margin: 0; }
.k8-m-1 { margin: var(--k8-space-1); }
.k8-m-2 { margin: var(--k8-space-2); }
.k8-m-3 { margin: var(--k8-space-3); }
.k8-m-4 { margin: var(--k8-space-4); }
.k8-m-5 { margin: var(--k8-space-5); }
.k8-m-6 { margin: var(--k8-space-6); }
.k8-m-7 { margin: var(--k8-space-7); }
.k8-m-8 { margin: var(--k8-space-8); }

/* Margin top */
.k8-mt-0 { margin-top: 0; }
.k8-mt-1 { margin-top: var(--k8-space-1); }
.k8-mt-2 { margin-top: var(--k8-space-2); }
.k8-mt-3 { margin-top: var(--k8-space-3); }
.k8-mt-4 { margin-top: var(--k8-space-4); }
.k8-mt-5 { margin-top: var(--k8-space-5); }
.k8-mt-6 { margin-top: var(--k8-space-6); }
.k8-mt-7 { margin-top: var(--k8-space-7); }
.k8-mt-8 { margin-top: var(--k8-space-8); }

/* Margin right */
.k8-mr-0 { margin-right: 0; }
.k8-mr-1 { margin-right: var(--k8-space-1); }
.k8-mr-2 { margin-right: var(--k8-space-2); }
.k8-mr-3 { margin-right: var(--k8-space-3); }
.k8-mr-4 { margin-right: var(--k8-space-4); }
.k8-mr-5 { margin-right: var(--k8-space-5); }
.k8-mr-6 { margin-right: var(--k8-space-6); }
.k8-mr-7 { margin-right: var(--k8-space-7); }
.k8-mr-8 { margin-right: var(--k8-space-8); }

/* Margin bottom */
.k8-mb-0 { margin-bottom: 0; }
.k8-mb-1 { margin-bottom: var(--k8-space-1); }
.k8-mb-2 { margin-bottom: var(--k8-space-2); }
.k8-mb-3 { margin-bottom: var(--k8-space-3); }
.k8-mb-4 { margin-bottom: var(--k8-space-4); }
.k8-mb-5 { margin-bottom: var(--k8-space-5); }
.k8-mb-6 { margin-bottom: var(--k8-space-6); }
.k8-mb-7 { margin-bottom: var(--k8-space-7); }
.k8-mb-8 { margin-bottom: var(--k8-space-8); }

/* Margin left */
.k8-ml-0 { margin-left: 0; }
.k8-ml-1 { margin-left: var(--k8-space-1); }
.k8-ml-2 { margin-left: var(--k8-space-2); }
.k8-ml-3 { margin-left: var(--k8-space-3); }
.k8-ml-4 { margin-left: var(--k8-space-4); }
.k8-ml-5 { margin-left: var(--k8-space-5); }
.k8-ml-6 { margin-left: var(--k8-space-6); }
.k8-ml-7 { margin-left: var(--k8-space-7); }
.k8-ml-8 { margin-left: var(--k8-space-8); }

/* Margin x-axis */
.k8-mx-0 { margin-left: 0; margin-right: 0; }
.k8-mx-1 { margin-left: var(--k8-space-1); margin-right: var(--k8-space-1); }
.k8-mx-2 { margin-left: var(--k8-space-2); margin-right: var(--k8-space-2); }
.k8-mx-3 { margin-left: var(--k8-space-3); margin-right: var(--k8-space-3); }
.k8-mx-4 { margin-left: var(--k8-space-4); margin-right: var(--k8-space-4); }
.k8-mx-5 { margin-left: var(--k8-space-5); margin-right: var(--k8-space-5); }
.k8-mx-6 { margin-left: var(--k8-space-6); margin-right: var(--k8-space-6); }
.k8-mx-7 { margin-left: var(--k8-space-7); margin-right: var(--k8-space-7); }
.k8-mx-8 { margin-left: var(--k8-space-8); margin-right: var(--k8-space-8); }
.k8-mx-auto { margin-left: auto; margin-right: auto; }

/* Margin y-axis */
.k8-my-0 { margin-top: 0; margin-bottom: 0; }
.k8-my-1 { margin-top: var(--k8-space-1); margin-bottom: var(--k8-space-1); }
.k8-my-2 { margin-top: var(--k8-space-2); margin-bottom: var(--k8-space-2); }
.k8-my-3 { margin-top: var(--k8-space-3); margin-bottom: var(--k8-space-3); }
.k8-my-4 { margin-top: var(--k8-space-4); margin-bottom: var(--k8-space-4); }
.k8-my-5 { margin-top: var(--k8-space-5); margin-bottom: var(--k8-space-5); }
.k8-my-6 { margin-top: var(--k8-space-6); margin-bottom: var(--k8-space-6); }
.k8-my-7 { margin-top: var(--k8-space-7); margin-bottom: var(--k8-space-7); }
.k8-my-8 { margin-top: var(--k8-space-8); margin-bottom: var(--k8-space-8); }

/* Padding utilities */
.k8-p-0 { padding: 0; }
.k8-p-1 { padding: var(--k8-space-1); }
.k8-p-2 { padding: var(--k8-space-2); }
.k8-p-3 { padding: var(--k8-space-3); }
.k8-p-4 { padding: var(--k8-space-4); }
.k8-p-5 { padding: var(--k8-space-5); }
.k8-p-6 { padding: var(--k8-space-6); }
.k8-p-7 { padding: var(--k8-space-7); }
.k8-p-8 { padding: var(--k8-space-8); }

/* Padding top */
.k8-pt-0 { padding-top: 0; }
.k8-pt-1 { padding-top: var(--k8-space-1); }
.k8-pt-2 { padding-top: var(--k8-space-2); }
.k8-pt-3 { padding-top: var(--k8-space-3); }
.k8-pt-4 { padding-top: var(--k8-space-4); }
.k8-pt-5 { padding-top: var(--k8-space-5); }
.k8-pt-6 { padding-top: var(--k8-space-6); }
.k8-pt-7 { padding-top: var(--k8-space-7); }
.k8-pt-8 { padding-top: var(--k8-space-8); }

/* Padding right */
.k8-pr-0 { padding-right: 0; }
.k8-pr-1 { padding-right: var(--k8-space-1); }
.k8-pr-2 { padding-right: var(--k8-space-2); }
.k8-pr-3 { padding-right: var(--k8-space-3); }
.k8-pr-4 { padding-right: var(--k8-space-4); }
.k8-pr-5 { padding-right: var(--k8-space-5); }
.k8-pr-6 { padding-right: var(--k8-space-6); }
.k8-pr-7 { padding-right: var(--k8-space-7); }
.k8-pr-8 { padding-right: var(--k8-space-8); }

/* Padding bottom */
.k8-pb-0 { padding-bottom: 0; }
.k8-pb-1 { padding-bottom: var(--k8-space-1); }
.k8-pb-2 { padding-bottom: var(--k8-space-2); }
.k8-pb-3 { padding-bottom: var(--k8-space-3); }
.k8-pb-4 { padding-bottom: var(--k8-space-4); }
.k8-pb-5 { padding-bottom: var(--k8-space-5); }
.k8-pb-6 { padding-bottom: var(--k8-space-6); }
.k8-pb-7 { padding-bottom: var(--k8-space-7); }
.k8-pb-8 { padding-bottom: var(--k8-space-8); }

/* Padding left */
.k8-pl-0 { padding-left: 0; }
.k8-pl-1 { padding-left: var(--k8-space-1); }
.k8-pl-2 { padding-left: var(--k8-space-2); }
.k8-pl-3 { padding-left: var(--k8-space-3); }
.k8-pl-4 { padding-left: var(--k8-space-4); }
.k8-pl-5 { padding-left: var(--k8-space-5); }
.k8-pl-6 { padding-left: var(--k8-space-6); }
.k8-pl-7 { padding-left: var(--k8-space-7); }
.k8-pl-8 { padding-left: var(--k8-space-8); }

/* Padding x-axis */
.k8-px-0 { padding-left: 0; padding-right: 0; }
.k8-px-1 { padding-left: var(--k8-space-1); padding-right: var(--k8-space-1); }
.k8-px-2 { padding-left: var(--k8-space-2); padding-right: var(--k8-space-2); }
.k8-px-3 { padding-left: var(--k8-space-3); padding-right: var(--k8-space-3); }
.k8-px-4 { padding-left: var(--k8-space-4); padding-right: var(--k8-space-4); }
.k8-px-5 { padding-left: var(--k8-space-5); padding-right: var(--k8-space-5); }
.k8-px-6 { padding-left: var(--k8-space-6); padding-right: var(--k8-space-6); }
.k8-px-7 { padding-left: var(--k8-space-7); padding-right: var(--k8-space-7); }
.k8-px-8 { padding-left: var(--k8-space-8); padding-right: var(--k8-space-8); }

/* Padding y-axis */
.k8-py-0 { padding-top: 0; padding-bottom: 0; }
.k8-py-1 { padding-top: var(--k8-space-1); padding-bottom: var(--k8-space-1); }
.k8-py-2 { padding-top: var(--k8-space-2); padding-bottom: var(--k8-space-2); }
.k8-py-3 { padding-top: var(--k8-space-3); padding-bottom: var(--k8-space-3); }
.k8-py-4 { padding-top: var(--k8-space-4); padding-bottom: var(--k8-space-4); }
.k8-py-5 { padding-top: var(--k8-space-5); padding-bottom: var(--k8-space-5); }
.k8-py-6 { padding-top: var(--k8-space-6); padding-bottom: var(--k8-space-6); }
.k8-py-7 { padding-top: var(--k8-space-7); padding-bottom: var(--k8-space-7); }
.k8-py-8 { padding-top: var(--k8-space-8); padding-bottom: var(--k8-space-8); }

/* ================================
   Display Utilities - 显示工具类
   ================================ */

.k8-d-none { display: none; }
.k8-d-inline { display: inline; }
.k8-d-inline-block { display: inline-block; }
.k8-d-block { display: block; }
.k8-d-table { display: table; }
.k8-d-table-row { display: table-row; }
.k8-d-table-cell { display: table-cell; }
.k8-d-flex { display: flex; }
.k8-d-inline-flex { display: inline-flex; }
.k8-d-grid { display: grid; }
.k8-d-inline-grid { display: inline-grid; }

/* ================================
   Flexbox Utilities - Flexbox工具类
   ================================ */

/* Flex direction */
.k8-flex-row { flex-direction: row; }
.k8-flex-row-reverse { flex-direction: row-reverse; }
.k8-flex-column { flex-direction: column; }
.k8-flex-column-reverse { flex-direction: column-reverse; }

/* Flex wrap */
.k8-flex-wrap { flex-wrap: wrap; }
.k8-flex-nowrap { flex-wrap: nowrap; }
.k8-flex-wrap-reverse { flex-wrap: wrap-reverse; }

/* Justify content */
.k8-justify-start { justify-content: flex-start; }
.k8-justify-end { justify-content: flex-end; }
.k8-justify-center { justify-content: center; }
.k8-justify-between { justify-content: space-between; }
.k8-justify-around { justify-content: space-around; }
.k8-justify-evenly { justify-content: space-evenly; }

/* Align items */
.k8-align-start { align-items: flex-start; }
.k8-align-end { align-items: flex-end; }
.k8-align-center { align-items: center; }
.k8-align-baseline { align-items: baseline; }
.k8-align-stretch { align-items: stretch; }

/* Align content */
.k8-align-content-start { align-content: flex-start; }
.k8-align-content-end { align-content: flex-end; }
.k8-align-content-center { align-content: center; }
.k8-align-content-between { align-content: space-between; }
.k8-align-content-around { align-content: space-around; }
.k8-align-content-stretch { align-content: stretch; }

/* Align self */
.k8-align-self-auto { align-self: auto; }
.k8-align-self-start { align-self: flex-start; }
.k8-align-self-end { align-self: flex-end; }
.k8-align-self-center { align-self: center; }
.k8-align-self-baseline { align-self: baseline; }
.k8-align-self-stretch { align-self: stretch; }

/* Flex grow and shrink */
.k8-flex-grow-0 { flex-grow: 0; }
.k8-flex-grow-1 { flex-grow: 1; }
.k8-flex-shrink-0 { flex-shrink: 0; }
.k8-flex-shrink-1 { flex-shrink: 1; }

/* Flex utilities */
.k8-flex-1 { flex: 1; }
.k8-flex-auto { flex: auto; }
.k8-flex-none { flex: none; }

/* Common flex combinations */
.k8-flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.k8-flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.k8-flex-end {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

/* ================================
   Grid Utilities - Grid工具类
   ================================ */

.k8-grid { display: grid; }

.k8-grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.k8-grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.k8-grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.k8-grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.k8-grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
.k8-grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
.k8-grid-cols-12 { grid-template-columns: repeat(12, 1fr); }

.k8-grid-rows-1 { grid-template-rows: repeat(1, 1fr); }
.k8-grid-rows-2 { grid-template-rows: repeat(2, 1fr); }
.k8-grid-rows-3 { grid-template-rows: repeat(3, 1fr); }
.k8-grid-rows-4 { grid-template-rows: repeat(4, 1fr); }

.k8-gap-0 { gap: 0; }
.k8-gap-1 { gap: var(--k8-space-1); }
.k8-gap-2 { gap: var(--k8-space-2); }
.k8-gap-3 { gap: var(--k8-space-3); }
.k8-gap-4 { gap: var(--k8-space-4); }
.k8-gap-5 { gap: var(--k8-space-5); }
.k8-gap-6 { gap: var(--k8-space-6); }

/* Auto-fit grid */
.k8-grid-auto-fit { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.k8-grid-auto-fit-sm { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.k8-grid-auto-fit-lg { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

/* ================================
   Text Utilities - 文本工具类
   ================================ */

/* Text alignment */
.k8-text-left { text-align: left; }
.k8-text-center { text-align: center; }
.k8-text-right { text-align: right; }
.k8-text-justify { text-align: justify; }

/* Text transform */
.k8-text-lowercase { text-transform: lowercase; }
.k8-text-uppercase { text-transform: uppercase; }
.k8-text-capitalize { text-transform: capitalize; }

/* Font weight */
.k8-font-light { font-weight: 300; }
.k8-font-normal { font-weight: 400; }
.k8-font-medium { font-weight: 500; }
.k8-font-semibold { font-weight: 600; }
.k8-font-bold { font-weight: 700; }

/* Font size */
.k8-text-xs { font-size: 12px; }
.k8-text-sm { font-size: 14px; }
.k8-text-base { font-size: 16px; }
.k8-text-lg { font-size: 18px; }
.k8-text-xl { font-size: 20px; }
.k8-text-2xl { font-size: 24px; }
.k8-text-3xl { font-size: 28px; }
.k8-text-4xl { font-size: 36px; }
.k8-text-5xl { font-size: 48px; }

/* Line height */
.k8-leading-none { line-height: 1; }
.k8-leading-tight { line-height: 1.25; }
.k8-leading-normal { line-height: 1.5; }
.k8-leading-relaxed { line-height: 1.625; }
.k8-leading-loose { line-height: 2; }

/* Text decoration */
.k8-underline { text-decoration: underline; }
.k8-no-underline { text-decoration: none; }
.k8-line-through { text-decoration: line-through; }

/* Text overflow */
.k8-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.k8-text-ellipsis { text-overflow: ellipsis; }
.k8-text-clip { text-overflow: clip; }

/* White space */
.k8-whitespace-normal { white-space: normal; }
.k8-whitespace-nowrap { white-space: nowrap; }
.k8-whitespace-pre { white-space: pre; }
.k8-whitespace-pre-line { white-space: pre-line; }
.k8-whitespace-pre-wrap { white-space: pre-wrap; }

/* ================================
   Color Utilities - 颜色工具类
   ================================ */

/* Text colors */
.k8-text-primary { color: var(--k8-primary); }
.k8-text-gradient { color: var(--k8-primary-gradient); }
.k8-text-light { color: var(--k8-primary-light); }
.k8-text-white { color: var(--k8-white); }
.k8-text-dark { color: var(--k8-dark); }
.k8-text-muted { color: var(--k8-text-muted); }
.k8-text-success { color: var(--k8-success); }
.k8-text-warning { color: var(--k8-warning); }
.k8-text-danger { color: var(--k8-danger); }
.k8-text-info { color: var(--k8-info); }

/* Background colors */
.k8-bg-primary { background-color: var(--k8-primary); }
.k8-bg-gradient { background-color: var(--k8-primary-gradient); }
.k8-bg-light { background-color: var(--k8-primary-light); }
.k8-bg-white { background-color: var(--k8-white); }
.k8-bg-dark { background-color: var(--k8-dark); }
.k8-bg-muted { background-color: var(--k8-light); }
.k8-bg-success { background-color: var(--k8-success); }
.k8-bg-warning { background-color: var(--k8-warning); }
.k8-bg-danger { background-color: var(--k8-danger); }
.k8-bg-info { background-color: var(--k8-info); }
.k8-bg-transparent { background-color: transparent; }

/* Gradient backgrounds */
.k8-gradient-primary { background: var(--k8-gradient-primary); }
.k8-gradient-light { background: var(--k8-gradient-light); }
.k8-gradient-bg { background: var(--k8-gradient-bg); }

/* Border colors */
.k8-border-primary { border-color: var(--k8-primary); }
.k8-border-light { border-color: var(--k8-border-light); }
.k8-border-dark { border-color: var(--k8-border); }
.k8-border-success { border-color: var(--k8-success); }
.k8-border-warning { border-color: var(--k8-warning); }
.k8-border-danger { border-color: var(--k8-danger); }
.k8-border-info { border-color: var(--k8-info); }

/* ================================
   Border Utilities - 边框工具类
   ================================ */

.k8-border { border: 1px solid var(--k8-border); }
.k8-border-0 { border: 0; }
.k8-border-t { border-top: 1px solid var(--k8-border); }
.k8-border-r { border-right: 1px solid var(--k8-border); }
.k8-border-b { border-bottom: 1px solid var(--k8-border); }
.k8-border-l { border-left: 1px solid var(--k8-border); }



/* ================================
   Shadow Utilities - 阴影工具类
   ================================ */

.k8-shadow-none { box-shadow: none; }
.k8-shadow-sm { box-shadow: var(--k8-shadow-sm); }
.k8-shadow { box-shadow: var(--k8-shadow); }
.k8-shadow-lg { box-shadow: var(--k8-shadow-lg); }
.k8-shadow-xl { box-shadow: var(--k8-shadow-xl); }

/* ================================
   Position Utilities - 定位工具类
   ================================ */

.k8-position-static { position: static; }
.k8-position-relative { position: relative; }
.k8-position-absolute { position: absolute; }
.k8-position-fixed { position: fixed; }
.k8-position-sticky { position: sticky; }

/* Position values */
.k8-top-0 { top: 0; }
.k8-top-auto { top: auto; }
.k8-right-0 { right: 0; }
.k8-right-auto { right: auto; }
.k8-bottom-0 { bottom: 0; }
.k8-bottom-auto { bottom: auto; }
.k8-left-0 { left: 0; }
.k8-left-auto { left: auto; }

/* Z-index */
.k8-z-0 { z-index: 0; }
.k8-z-10 { z-index: 10; }
.k8-z-20 { z-index: 20; }
.k8-z-30 { z-index: 30; }
.k8-z-40 { z-index: 40; }
.k8-z-50 { z-index: 50; }

/* ================================
   Width & Height Utilities - 宽高工具类
   ================================ */

/* Width */
.k8-w-auto { width: auto; }
.k8-w-full { width: 100%; }
.k8-w-screen { width: 100vw; }
.k8-w-1\/2 { width: 50%; }
.k8-w-1\/3 { width: 33.333333%; }
.k8-w-2\/3 { width: 66.666667%; }
.k8-w-1\/4 { width: 25%; }
.k8-w-3\/4 { width: 75%; }

/* Height */
.k8-h-auto { height: auto; }
.k8-h-full { height: 100%; }
.k8-h-screen { height: 100vh; }

/* Min/Max width */
.k8-min-w-0 { min-width: 0; }
.k8-min-w-full { min-width: 100%; }
.k8-max-w-none { max-width: none; }
.k8-max-w-full { max-width: 100%; }

/* Min/Max height */
.k8-min-h-0 { min-height: 0; }
.k8-min-h-full { min-height: 100%; }
.k8-min-h-screen { min-height: 100vh; }
.k8-max-h-full { max-height: 100%; }
.k8-max-h-screen { max-height: 100vh; }

/* ================================
   Overflow Utilities - 溢出工具类
   ================================ */

.k8-overflow-auto { overflow: auto; }
.k8-overflow-hidden { overflow: hidden; }
.k8-overflow-visible { overflow: visible; }
.k8-overflow-scroll { overflow: scroll; }
.k8-overflow-x-auto { overflow-x: auto; }
.k8-overflow-x-hidden { overflow-x: hidden; }
.k8-overflow-x-scroll { overflow-x: scroll; }
.k8-overflow-y-auto { overflow-y: auto; }
.k8-overflow-y-hidden { overflow-y: hidden; }
.k8-overflow-y-scroll { overflow-y: scroll; }

/* ================================
   Visibility Utilities - 可见性工具类
   ================================ */

.k8-visible { visibility: visible; }
.k8-invisible { visibility: hidden; }

/* Opacity */
.k8-opacity-0 { opacity: 0; }
.k8-opacity-25 { opacity: 0.25; }
.k8-opacity-50 { opacity: 0.5; }
.k8-opacity-75 { opacity: 0.75; }
.k8-opacity-100 { opacity: 1; }

/* ================================
   Responsive Utilities - 响应式工具类
   ================================ */

/* 移动端显示/隐藏 */
@media (max-width: 767px) {
  .k8-d-mobile-none { display: none; }
  .k8-d-mobile-block { display: block; }
  .k8-d-mobile-flex { display: flex; }
  .k8-d-mobile-grid { display: grid; }
}

/* 平板端显示/隐藏 */
@media (min-width: 768px) and (max-width: 1023px) {
  .k8-d-tablet-none { display: none; }
  .k8-d-tablet-block { display: block; }
  .k8-d-tablet-flex { display: flex; }
  .k8-d-tablet-grid { display: grid; }
}

/* 桌面端显示/隐藏 */
@media (min-width: 1024px) {
  .k8-d-desktop-none { display: none; }
  .k8-d-desktop-block { display: block; }
  .k8-d-desktop-flex { display: flex; }
  .k8-d-desktop-grid { display: grid; }
}

/* ================================
   Interaction Utilities - 交互工具类
   ================================ */

.k8-cursor-auto { cursor: auto; }
.k8-cursor-default { cursor: default; }
.k8-cursor-pointer { cursor: pointer; }
.k8-cursor-wait { cursor: wait; }
.k8-cursor-text { cursor: text; }
.k8-cursor-move { cursor: move; }
.k8-cursor-not-allowed { cursor: not-allowed; }

/* User select */
.k8-select-none { user-select: none; }
.k8-select-text { user-select: text; }
.k8-select-all { user-select: all; }
.k8-select-auto { user-select: auto; }

/* Pointer events */
.k8-pointer-events-none { pointer-events: none; }
.k8-pointer-events-auto { pointer-events: auto; }