@import "tailwindcss";

@theme {
  --font-sans: "Inter", "system-ui", "-apple-system", "Segoe UI", "sans-serif";

  --color-brand: #0071e3;
  --color-brand-dark: #0066cc;
  --color-brand-soft: #409cff;

  --color-surface-light: #f5f7fb;
  --color-surface-dark: #0b1220;

  --color-card-light: #ffffff;
  --color-card-dark: #151c2c;

  --color-scrollbar-thumb-light: #94a3b8;
  --color-scrollbar-thumb-dark: #15203b;

  --shadow-glass: 0 10px 30px rgba(15,23,42,0.08);
  --shadow-glassDark: 0 20px 45px rgba(0,0,0,0.45);

  --radius-xl: 1rem;
}

@variant dark (&:where(.dark, .dark *));

@layer base {
  html {
    color-scheme: light;
  }

  html.dark {
    color-scheme: dark;
  }

  body {
    font-family: var(--font-sans);
    background-color: var(--color-surface-light);
    color: #0f172a;
    min-height: 100vh;
    overflow: hidden;
  }

  :root.dark body {
    background-color: var(--color-surface-dark);
    color: #f8fafc;
  }

  #app {
    min-height: 100vh;
  }

  /* 全局滚动条基础几何：置于 base，使 utilities 中的 .scrollbar-muted/.scrollbar-nowidth 可覆盖 */
  *::-webkit-scrollbar {
    width: 0.75rem;
    height: 0.75rem;
  }

  *::-webkit-scrollbar-track {
    background: transparent;
  }

  /* 亮色滚动条：与暗色保持相同几何（透明边距），确保亮/暗滚动块大小一致 */
  html ::-webkit-scrollbar-thumb {
    background-color: var(--color-scrollbar-thumb-light);
    border-radius: 9999px;
    border: 2px solid transparent;
    background-clip: padding-box;
  }

  html ::-webkit-scrollbar-track {
    background: transparent;
  }

  /* 暗色滚动条：挂在 html.dark 上（root），比 surface 略亮以保留可辨识反差 (#15203b)，
     注意：必须用 html.dark 而非 .dark *，因为经典滚动条只作用于滚动容器自身，
     .dark * 在亮色模式不命中会导致回退到原生宽度，亮/暗宽度不一致。 */
  html.dark ::-webkit-scrollbar-thumb {
    background-color: var(--color-scrollbar-thumb-dark);
    border-radius: 9999px;
    border: 2px solid transparent;
    background-clip: padding-box;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15);
  }

  html.dark ::-webkit-scrollbar-track {
    background: transparent;
  }
}

@layer utilities {
  /* 弱化滚动条 */
  .scrollbar-muted {
    scrollbar-width: thin;
    scrollbar-color: var(--color-scrollbar-thumb-light) transparent;
  }

  .scrollbar-muted::-webkit-scrollbar {
    width: 0.4rem;
  }

  .scrollbar-muted::-webkit-scrollbar-track {
    background: transparent;
  }

  .scrollbar-muted::-webkit-scrollbar-thumb {
    background-color: var(--color-scrollbar-thumb-light);
    border-radius: 9999px;
  }

  html.dark .scrollbar-muted {
    scrollbar-color: var(--color-surface-dark) transparent;
  }

  html.dark .scrollbar-muted::-webkit-scrollbar-thumb {
    background-color: var(--color-surface-dark);
  }

  /* 完全隐藏滚动条 */
  .scrollbar-nowidth {
    scrollbar-width: none;
  }

  .scrollbar-nowidth::-webkit-scrollbar {
    width: 0;
    background: transparent;
  }

  .scrollbar-nowidth::-webkit-scrollbar-track {
    background: transparent;
  }

  .scrollbar-nowidth::-webkit-scrollbar-thumb {
    background-color: transparent;
    border-radius: 0;
  }
}