/* ============================================================
   Utility Classes - 用于替代内联样式的工具类
   ============================================================ */

/* ===== 布局工具类 ===== */
.flex {
  display: flex;
}

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

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

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-4 {
  gap: 4px;
}

.gap-6 {
  gap: 6px;
}

.gap-8 {
  gap: 8px;
}

.gap-12 {
  gap: 12px;
}

.gap-16 {
  gap: 16px;
}

.gap-x-4 {
  column-gap: 4px;
}

.gap-x-6 {
  column-gap: 6px;
}

.gap-x-8 {
  column-gap: 8px;
}

.gap-y-4 {
  row-gap: 4px;
}

.gap-y-6 {
  row-gap: 6px;
}

.gap-y-8 {
  row-gap: 8px;
}

/* ===== 间距工具类 ===== */
.m-0 { margin: 0; }
.m-2 { margin: 2px; }
.m-4 { margin: 4px; }
.m-6 { margin: 6px; }
.m-8 { margin: 8px; }
.m-10 { margin: 10px; }
.m-12 { margin: 12px; }
.m-16 { margin: 16px; }

.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mt-6 { margin-top: 6px; }
.mt-8 { margin-top: 8px; }
.mt-10 { margin-top: 10px; }
.mt-12 { margin-top: 12px; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }
.mb-6 { margin-bottom: 6px; }
.mb-8 { margin-bottom: 8px; }
.mb-10 { margin-bottom: 10px; }
.mb-12 { margin-bottom: 12px; }

.ml-0 { margin-left: 0; }
.ml-2 { margin-left: 2px; }
.ml-4 { margin-left: 4px; }
.ml-6 { margin-left: 6px; }

.mr-0 { margin-right: 0; }
.mr-2 { margin-right: 2px; }
.mr-4 { margin-right: 4px; }
.mr-6 { margin-right: 6px; }

.p-0 { padding: 0; }
.p-2 { padding: 2px; }
.p-4 { padding: 4px; }
.p-6 { padding: 6px; }
.p-8 { padding: 8px; }
.p-10 { padding: 10px; }
.p-12 { padding: 12px; }
.p-16 { padding: 16px; }

.px-4 { padding-left: 4px; padding-right: 4px; }
.px-6 { padding-left: 6px; padding-right: 6px; }
.px-8 { padding-left: 8px; padding-right: 8px; }
.px-12 { padding-left: 12px; padding-right: 12px; }

.py-4 { padding-top: 4px; padding-bottom: 4px; }
.py-6 { padding-top: 6px; padding-bottom: 6px; }
.py-8 { padding-top: 8px; padding-bottom: 8px; }
.py-10 { padding-top: 10px; padding-bottom: 10px; }

.pt-0 { padding-top: 0; }
.pt-2 { padding-top: 2px; }
.pt-4 { padding-top: 4px; }
.pt-6 { padding-top: 6px; }
.pt-8 { padding-top: 8px; }

.pb-0 { padding-bottom: 0; }
.pb-2 { padding-bottom: 2px; }
.pb-4 { padding-bottom: 4px; }
.pb-6 { padding-bottom: 6px; }
.pb-8 { padding-bottom: 8px; }

.pl-0 { padding-left: 0; }
.pl-2 { padding-left: 2px; }
.pl-4 { padding-left: 4px; }
.pl-6 { padding-left: 6px; }

.pr-0 { padding-right: 0; }
.pr-2 { padding-right: 2px; }
.pr-4 { padding-right: 4px; }
.pr-6 { padding-right: 6px; }

/* ===== 尺寸工具类 ===== */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-screen { width: 100vw; }

.h-full { height: 100%; }
.h-auto { height: auto; }
.h-screen { height: 100vh; }

.min-w-0 { min-width: 0; }
.max-w-full { max-width: 100%; }

/* ===== 显示工具类 ===== */
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.inline-flex { display: inline-flex; }
.hidden { display: none !important; }
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* ===== 文本工具类 ===== */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-normal { font-weight: 400; }

.text-xs { font-size: 12px; }
.text-sm { font-size: 14px; }
.text-base { font-size: 16px; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 20px; }

.line-clamp-1 {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 背景和边框工具类 ===== */
.bg-transparent { background-color: transparent; }
.bg-white { background-color: #ffffff; }
.bg-black { background-color: #000000; }

.border { border: 1px solid currentColor; }
.border-0 { border: 0; }
.border-none { border: none; }

.rounded { border-radius: 4px; }
.rounded-lg { border-radius: 12px; }
.rounded-full { border-radius: 999px; }

/* ===== 位置工具类 ===== */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.inset-0 {
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

/* ===== 阴影工具类 ===== */
.shadow-sm {
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.shadow {
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.shadow-md {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.shadow-lg {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* ===== 过渡和动画工具类 ===== */
.transition {
  transition-property: all;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

.transition-colors {
  transition-property: background-color, border-color, color, fill, stroke;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

.duration-150 { transition-duration: 150ms; }
.duration-200 { transition-duration: 200ms; }
.duration-300 { transition-duration: 300ms; }

/* ===== 对齐工具类 ===== */
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-baseline { align-items: baseline; }
.items-stretch { align-items: stretch; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

/* ===== 响应式显示工具类 ===== */
@media (max-width: 767px) {
  .hidden-mobile { display: none !important; }
}

@media (min-width: 768px) {
  .hidden-desktop { display: none !important; }
}

/* ===== 实用工具类 ===== */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }

.select-none { user-select: none; }
.select-text { user-select: text; }

.pointer-events-none { pointer-events: none; }
.pointer-events-auto { pointer-events: auto; }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }

.whitespace-nowrap { white-space: nowrap; }
.whitespace-normal { white-space: normal; }

/* ===== 响应式布局工具类 ===== */
@media (max-width: 767px) {
  .flex-mobile-col {
    flex-direction: column;
  }

  .w-full-mobile {
    width: 100%;
  }

  .text-sm-mobile {
    font-size: 14px;
  }

  .p-mobile {
    padding: 12px;
  }
}

/* ===== Z-index工具类 ===== */
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }
.z-auto { z-index: auto; }

/* ===== 特殊工具类 ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.no-scrollbar::-webkit-scrollbar {
  display: none;
}