/* ============================================
   谁是大诗豪 — 水墨国风 CSS 变量系统
   ============================================ */

:root {
  /* --- 水墨配色 --- */
  --ink-black: #1a1a1a;
  --ink-dark: #2c2c2c;
  --ink-gray: #666666;
  --ink-light: #999999;
  --ink-lighter: #cccccc;
  --ink-extra-light: #e8e4df;

  --paper-white: #faf7f2;
  --paper-warm: #f5f0e8;
  --paper-aged: #ede4d3;
  --paper-dark: #d4c5a9;

  --accent-red: #c0392b;
  --accent-gold: #b8860b;
  --accent-jade: #2d6a4f;
  --accent-blue: #1a5276;

  /* --- 功能色 --- */
  --success: #2d6a4f;
  --error: #c0392b;
  --warning: #d4a017;
  --info: #1a5276;

  /* --- 字体 --- */
  --font-title: "SimSun", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --font-body: "SimSun", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --font-mono: "SimSun", "Courier New", monospace;

  /* --- 字号 --- */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  /* --- 间距 --- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* --- 圆角 --- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* --- 阴影 --- */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.16);
  --shadow-ink: 0 2px 8px rgba(26,26,26,0.2);

  /* --- 过渡 --- */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;

  /* --- 布局 --- */
  --header-height: 56px;
  --nav-height: 60px;
  --max-width: 480px;

  /* --- 毛笔生命 --- */
  --brush-color-full: #2c2c2c;
  --brush-color-empty: #d4c5a9;

  /* --- Z-index --- */
  --z-dropdown: 100;
  --z-modal: 200;
  --z-toast: 300;
  --z-loading: 400;
}

/* 暗色模式适配（未来扩展） */
@media (prefers-color-scheme: dark) {
  :root {
    --ink-black: #f0ebe3;
    --ink-dark: #d4c5a9;
    --ink-gray: #999999;
    --ink-light: #666666;
    --paper-white: #1a1a1a;
    --paper-warm: #222222;
    --paper-aged: #2c2c2c;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  }
}