/* 智慧工地主题色 */
:root {
  /* 主色 */
  --color-primary: #1e3a5f;
  --color-primary-light: #2d5a8a;
  --color-secondary: #3b82f6;

  /* 警示色 */
  --color-danger: #f97316;
  --color-warning: #eab308;
  --color-success: #22c55e;

  /* 中性色 */
  --color-bg: #f8fafc;
  --color-card: #ffffff;
  --color-text: #1f2937;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;

  /* 状态色 */
  --color-online: #22c55e;
  --color-offline: #9ca3af;

  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', Consolas, monospace;
}

/* 全局重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiwebkit;
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* 工具类 */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.p-3 { padding: 12px; }
.p-4 { padding: 16px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mb-3 { margin-bottom: 12px; }
.text-sm { font-size: 12px; }
.text-secondary { color: var(--color-text-secondary); }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }
.w-full { width: 100%; }
.hidden { display: none; }