/* Captio式シンプルメモ — Developer Hub
   simplememofast.github.io
   Last updated: 2026-05-25
*/

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #F5F1E8;
  --bg-card: #FFFFFF;
  --text: #1a1a1a;
  --text-muted: #5a5a5a;
  --text-soft: #8a8a8a;
  --accent: #d97706;
  --accent-hover: #b45309;
  --border: #e5e0d3;
  --code-bg: #2d2d2d;
  --code-text: #f5f5f5;
  --max: 760px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
  line-height: 1.75;
  font-feature-settings: "palt";
  padding: 0;
}

header.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
}

header.site-header .inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.9rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

header.site-header .brand {
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

header.site-header nav {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
}

header.site-header nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.15s;
}

header.site-header nav a:hover,
header.site-header nav a[aria-current="page"] {
  color: var(--accent);
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.4rem 1.2rem 4rem;
}

article > header.page-header {
  margin-bottom: 2.2rem;
}

article > header.page-header h1 {
  font-size: 1.85rem;
  line-height: 1.35;
  margin-bottom: 0.6rem;
  letter-spacing: -0.02em;
}

article > header.page-header .lead {
  color: var(--text-muted);
  font-size: 1.02rem;
}

h2 {
  font-size: 1.35rem;
  margin-top: 2.6rem;
  margin-bottom: 0.9rem;
  letter-spacing: -0.01em;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

h3 {
  font-size: 1.1rem;
  margin-top: 1.8rem;
  margin-bottom: 0.6rem;
}

p { margin: 0.9rem 0; }

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 0.07em;
}

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

ul, ol { margin: 0.9rem 0 0.9rem 1.4rem; }
li { margin: 0.3rem 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.94rem;
  background: var(--bg-card);
  border-radius: 6px;
  overflow: hidden;
}

th, td {
  padding: 0.7rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  background: #ede8d8;
  font-weight: 600;
}

tr:last-child td { border-bottom: none; }

code {
  background: rgba(0,0,0,0.06);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  font-size: 0.9em;
}

pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.55;
  margin: 1.2rem 0;
}

pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.2rem 0 0.2rem 1rem;
  margin: 1.2rem 0;
  color: var(--text-muted);
  font-style: italic;
}

.callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.1rem 1.3rem;
  margin: 1.4rem 0;
}

.callout-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--accent);
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  margin: 0.3rem 0.4rem 0.3rem 0;
  transition: background 0.15s;
}

.btn:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn.secondary:hover {
  background: var(--accent);
  color: #fff;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.8rem;
  margin: 1.4rem 0;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
}

.stat-num {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

.meta-list {
  list-style: none;
  margin-left: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.meta-list li {
  padding: 0.35rem 0;
  border-bottom: 1px dashed var(--border);
}

.meta-list li:last-child { border-bottom: none; }

.meta-list .k {
  display: inline-block;
  width: 7.5rem;
  color: var(--text-soft);
  font-weight: 600;
}

footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.2rem 3rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

footer.site-footer .inner {
  max-width: var(--max);
  margin: 0 auto;
}

footer.site-footer .links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

footer.site-footer .links a {
  color: var(--text-muted);
}

footer.site-footer .copy {
  color: var(--text-soft);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-soft);
  margin-bottom: 1.2rem;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

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

@media (max-width: 560px) {
  article > header.page-header h1 { font-size: 1.55rem; }
  h2 { font-size: 1.2rem; }
  header.site-header nav { gap: 0.7rem; }
  header.site-header nav a { font-size: 0.85rem; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1815;
    --bg-card: #24211c;
    --text: #ece8df;
    --text-muted: #b0aca0;
    --text-soft: #7a766c;
    --accent: #f59e0b;
    --accent-hover: #fbbf24;
    --border: #3a362f;
  }
  th { background: #2d2a23; }
}