/* One small stylesheet: shibumi tokens on a Nue-style semantic skeleton. */
@layer base, components;

@layer base {
  *, *::before, *::after {
    box-sizing: border-box;
  }

  :root {
    color-scheme: light dark;
    --paper: #f5f0e4;
    --ink: #1b130f;
    --muted: #6e6259;
    --hairline: #e3dbc9;
    --accent: #e95f19;
    --font-serif: Georgia, "Times New Roman", serif;
  }

  @media (prefers-color-scheme: dark) {
    :root {
      --paper: #1b130f;
      --ink: #f5f0e4;
      --muted: #a2968c;
      --hairline: #372a22;
      --accent: #ff8648;
    }
  }

  body {
    margin: 0;
    padding: 1rem 1.5rem;
    background: var(--paper);
    color: var(--ink);
    font-family: system-ui, sans-serif;
    font-size: 1.125rem;
    line-height: 1.6;

    > header {
      max-width: 40.5rem;
      margin: 0 auto;
      padding-top: 1rem;

      a {
        display: inline-flex;
        align-items: center;
        gap: 0.7rem;
        color: var(--ink);
        font-family: ui-serif, Georgia, "Iowan Old Style", Cambria, serif;
        font-size: 1.25rem;
        font-weight: 500;
        letter-spacing: 0.01em;
        text-decoration: none;
      }

      .mark-badge {
        color: var(--accent);
        font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
        font-size: 1.125rem;
      }
    }

    > main {
      max-width: 40.5rem;
      margin: 6rem auto;
      min-height: 60vh;
    }

    > footer {
      padding-block: 4rem;
      text-align: center;
      color: var(--muted);
      font-size: 0.875rem;
    }
  }

  h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.15;
    color: var(--ink);
  }

  h1 {
    font-size: 2.5rem;
    letter-spacing: -0.02em;
    margin-block: 0.25em;
  }

  p {
    text-wrap: pretty;
  }

  a {
    color: inherit;
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--accent) 30%, transparent);
    text-underline-offset: 0.18em;
  }

  a:hover {
    text-decoration-color: var(--accent);
  }

  time {
    color: var(--muted);
    font-size: 0.875rem;
  }

  code {
    font-family: ui-monospace, monospace;
    font-size: 0.9em;
  }

  pre {
    padding: 1rem 1.25rem;
    overflow-x: auto;
    border: 1px solid var(--hairline);
    border-radius: 4px;
  }
}

@layer components {
  /* Post list: whole-block links, hierarchy from type alone. */
  .posts {
    list-style: none;
    margin: 3rem 0 0;
    padding: 0;

    li + li {
      margin-top: 3rem;
    }

    a {
      display: block;
      text-decoration: none;
      color: inherit;

      h3 {
        margin-block: 0.25rem;
        font-size: 1.375rem;
      }

      p {
        margin: 0;
        color: var(--muted);
      }
    }

    a:hover h3 {
      color: var(--accent);
    }
  }

  .lede {
    font-size: 1.25rem;
    color: var(--muted);
    margin-top: 0;
  }
}

/* Post images: full column width, soft corners, credit line stays quiet. */
article img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.6rem;
  opacity: 0.9;
  transition: opacity 200ms ease;
}

article img:hover,
article img:focus-visible {
  opacity: 1;
}

article small {
  display: block;
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.home-title {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.home-title .mark-badge {
  color: var(--accent);
  font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
  font-size: 0.42em;
}

.post-end {
  margin-top: 4rem;
}

.ghost-pill {
  display: inline-block;
  padding: 0.5rem 1.3rem;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease;
}

.ghost-pill:hover,
.ghost-pill:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

article :not(pre) > code {
  padding: 0.12em 0.42em;
  border-radius: 0.35rem;
  background: color-mix(in srgb, var(--ink) 6%, transparent);
  font-size: 0.85em;
}