/* 基本的 Tailwind 样式 - 用于离线使用 */

/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 基本的 utility classes */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 640px) {
  .container {
    max-width: 640px;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 768px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 1024px;
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}

/* 布局 */
.flex { display: flex; }
.grid { display: grid; }
.block { display: block; }
.inline-block { display: inline-block; }
.hidden { display: none; }

/* Flexbox */
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

/* 间距 */
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.m-4 { margin: 1rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* 文本 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.font-bold { font-weight: bold; }
.font-medium { font-weight: 500; }
.text-white { color: white; }
.text-gray-300 { color: #d1d5db; }
.text-gray-400 { color: #9ca3af; }

/* 背景 */
.bg-dark { background-color: #1f2937; }
.bg-darker { background-color: #111827; }

/* 基本的响应式工具 */
@media (min-width: 768px) {
  .md\\:flex { display: flex; }
  .md\\:hidden { display: none; }
}

/* 过渡效果 */
.transition-all { transition: all 0.3s ease; }
.transition-colors { transition: color 0.3s ease; }

/* 圆角 */
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-full { border-radius: 9999px; }

/* 阴影 */
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1); }

/* 位置 */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }

/* Z-index */
.z-50 { z-index: 50; }

/* 宽高 */
.w-full { width: 100%; }
.h-full { height: 100%; }
.w-10 { width: 2.5rem; }
.h-10 { height: 2.5rem; }

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-weight: 500;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(to right, #0ea5e9, #22d3ee);
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
}