/* ===== TokenHub 品牌设计规范 ===== */
:root {
  /* 主色调 */
  --color-primary: #3B82F6;
  --color-primary-dark: #2563EB;
  --color-primary-light: #60A5FA;
  --color-accent: #8B5CF6;
  --color-accent-dark: #7C3AED;

  /* 功能色 */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-danger: #EF4444;
  --color-info: #06B6D4;

  /* 背景色 (暗色主题) */
  --color-bg-root: #0B1121;
  --color-bg-dark: #0F172A;
  --color-bg-card: #1E293B;
  --color-bg-card-hover: #273548;
  --color-bg-input: #334155;

  /* 文字色 */
  --color-text-primary: #F8FAFC;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;

  /* 边框 */
  --color-border: #334155;
  --color-border-light: rgba(51, 65, 85, 0.3);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.4);
  --shadow-xl: 0 20px 40px -10px rgba(0,0,0,0.5);
  --shadow-glow-blue: 0 0 20px rgba(59,130,246,0.3);
  --shadow-glow-purple: 0 0 20px rgba(139,92,246,0.3);

  /* 字体 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* 动画 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg-root);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* 渐变文字工具类 */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 渐变按钮 */
.btn-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  border: none;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-blue);
}

/* 卡片样式 */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* 动画 */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.animate-fade-in { animation: fadeIn 0.5s ease forwards; }
.animate-slide-in { animation: slideInRight 0.4s ease forwards; }