/* ============================================
   中创合科技 — CSS 变量系统
   Modern Tech Theme — Dark Mode Default
   ============================================ */

:root {
  /* === 主色调 === */
  --color-primary: #6C5CE7;
  --color-primary-rgb: 108, 92, 231;
  --color-primary-light: #8B7CF0;
  --color-primary-dark: #5541D7;
  
  --color-secondary: #00D2FF;
  --color-secondary-rgb: 0, 210, 255;
  --color-secondary-light: #33DDFF;
  --color-secondary-dark: #00A8CC;
  
  --color-accent: #FDCB6E;
  --color-accent-rgb: 253, 203, 110;

  /* === 背景色 === */
  --bg-primary: #0F0F1A;
  --bg-secondary: #1A1A2E;
  --bg-card: rgba(26, 26, 46, 0.7);
  --bg-card-hover: rgba(30, 30, 50, 0.9);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-overlay: rgba(15, 15, 26, 0.8);

  /* === 文字色 === */
  --text-primary: #EAEAEA;
  --text-secondary: #8B8BA7;
  --text-muted: #5A5A7A;
  --text-on-primary: #FFFFFF;

  /* === 边框 === */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(108, 92, 231, 0.4);
  --border-glow: rgba(108, 92, 231, 0.5);

  /* === 渐变 === */
  --gradient-primary: linear-gradient(135deg, #6C5CE7 0%, #00D2FF 100%);
  --gradient-primary-reverse: linear-gradient(135deg, #00D2FF 0%, #6C5CE7 100%);
  --gradient-dark: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 100%);
  --gradient-hero: linear-gradient(180deg, rgba(15,15,26,0) 0%, #0F0F1A 100%);
  --gradient-card-border: linear-gradient(135deg, rgba(108,92,231,0.3), rgba(0,210,255,0.1));

  /* === 阴影 === */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(108, 92, 231, 0.12);
  --shadow-lg: 0 16px 64px rgba(108, 92, 231, 0.15);
  --shadow-xl: 0 24px 80px rgba(108, 92, 231, 0.2);
  --shadow-glow: 0 0 40px rgba(108, 92, 231, 0.2);
  --shadow-glow-secondary: 0 0 40px rgba(0, 210, 255, 0.15);

  /* === 卡片装饰 === */
  --card-border-width: 1px;
  --glass-blur: 20px;

  /* === 圆角 === */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* === 间距 === */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  /* === 字体 === */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "SF Mono", "Consolas", "Menlo", "Courier New", monospace;
  
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 2rem;      /* 32px */
  --text-4xl: 2.5rem;    /* 40px */
  --text-5xl: 3.5rem;    /* 56px */
  --text-6xl: 4.5rem;    /* 72px */

  /* === 过渡 === */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* === 布局 === */
  --header-height: 72px;
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --max-width-wide: 1400px;

  /* === z-index === */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* === 亮色主题变量 === */
[data-theme="light"] {
  --bg-primary: #F8F9FC;
  --bg-secondary: #FFFFFF;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(255, 255, 255, 1);
  --bg-glass: rgba(108, 92, 231, 0.03);
  --bg-overlay: rgba(248, 249, 252, 0.9);

  --text-primary: #1A1A2E;
  --text-secondary: #5A5A7A;
  --text-muted: #8B8BA7;
  --text-on-primary: #FFFFFF;

  --border-color: rgba(0, 0, 0, 0.06);
  --border-color-hover: rgba(108, 92, 231, 0.3);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 32px rgba(108, 92, 231, 0.08);
  --shadow-lg: 0 16px 64px rgba(108, 92, 231, 0.1);
  --shadow-glow: 0 0 40px rgba(108, 92, 231, 0.12);

  --bg-glass: rgba(108, 92, 231, 0.02);
}