/* okiyasu.biz article pages (MC-043 preview mock) */

:root {
  color-scheme: light dark;
  --page-bg: #f7f8fb;
  --surface: #ffffff;
  --surface-soft: #eef2f5;
  --text: #18211f;
  --muted: #5f6d68;
  --border: #d9e2df;
  --accent: #2d6f63;
  --accent-strong: #1d5148;
  --accent-alt: #8f3f4a;
  --shadow: 0 14px 34px rgba(24, 33, 31, 0.08);
  --focus: #b45336;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page-bg: #111417;
    --surface: #181d20;
    --surface-soft: #222a2e;
    --text: #edf4f1;
    --muted: #aebbb7;
    --border: #31403c;
    --accent: #78c6b5;
    --accent-strong: #9bd7ca;
    --accent-alt: #e19a86;
    --shadow: 0 16px 36px rgba(0, 0, 0, 0.22);
    --focus: #f0a38d;
  }
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, var(--surface-soft) 0, transparent 16rem),
    var(--page-bg);
  line-height: 1.82;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

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

a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10;
  transform: translateY(-160%);
  padding: 0.5rem 0.75rem;
  color: var(--surface);
  background: var(--accent-strong);
  border-radius: 6px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
.site-footer {
  border-color: var(--border);
  border-style: solid;
  border-width: 0 0 1px;
}

.site-footer {
  border-width: 1px 0 0;
  margin-top: 3rem;
}

.site-header__inner,
.site-footer__inner {
  width: min(100% - 2rem, 980px);
  margin: 0 auto;
  padding: 1rem 0;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 0.75rem;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--muted);
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--accent-alt);
}

.home-layout,
.article-index {
  width: min(100% - 2rem, 1180px);
  margin: 0 auto;
  padding: 2rem 0 0;
}

.article-layout {
  width: min(100% - 2rem, 820px);
  margin: 0 auto;
  padding: 2rem 0 0;
}

.index-header,
.article-header {
  margin: 0 0 1.5rem;
}

.index-header {
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid var(--border);
}

.home-hero {
  padding: 2rem 0 2.25rem;
  border-bottom: 1px solid var(--border);
}

h1,
h2,
h3 {
  line-height: 1.34;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: 3rem;
}

.home-hero h1 {
  max-width: 13ch;
  font-size: 4.4rem;
}

.home-hero p,
.index-header p {
  max-width: 42rem;
  margin: 0.75rem 0 0;
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

.home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.3rem;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.45rem 0.9rem;
  color: var(--surface);
  background: var(--accent-strong);
  border: 1px solid var(--accent-strong);
  border-radius: 6px;
  font-weight: 750;
  text-decoration: none;
}

.button-link:hover {
  color: var(--surface);
  background: var(--accent-alt);
  border-color: var(--accent-alt);
}

.home-stats,
.archive-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  max-width: 42rem;
  margin: 1.5rem 0 0;
}

.home-stats div,
.archive-summary div {
  min-width: 0;
  padding: 0.7rem 0.8rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.home-stats dt,
.archive-summary dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 650;
}

.home-stats dd,
.archive-summary dd {
  margin: 0.15rem 0 0;
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.2;
}

.home-feature,
.home-section {
  margin-top: 2rem;
}

.section-heading {
  margin: 0 0 0.9rem;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.25rem;
}

.section-heading--inline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1rem;
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.article-list--compact {
  margin-top: 0;
}

.article-list--archive {
  align-items: stretch;
}

.article-item {
  margin: 0;
}

.article-card,
.article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.article-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.15rem 1.2rem;
}

.article-card--featured {
  max-width: 58rem;
  min-height: 0;
  padding: 1.35rem 1.45rem;
}

.article-card__link {
  color: var(--text);
  text-decoration: none;
}

.article-card__link:hover h2 {
  color: var(--accent-alt);
}

.article-card h2 {
  margin: 0;
  font-size: 1.15rem;
  transition: color 0.15s ease;
}

.article-card--featured h2 {
  font-size: 1.75rem;
}

.article-meta {
  order: -1;
  margin: 0 0 0.45rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.article-terms {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.8rem 0 0;
}

.article-term {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0.1rem 0.55rem;
  color: var(--accent-strong);
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 650;
}

.article-term--tag::before {
  content: "#";
  margin-right: 0.08rem;
}

.article-term--more {
  color: var(--muted);
}

.excerpt {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.empty-state {
  padding: 1.5rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.article {
  overflow: hidden;
}

.article-header {
  padding: 2rem 2rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.article-body {
  padding: 0.5rem 2rem 2rem;
  overflow-wrap: anywhere;
}

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4 {
  margin: 2rem 0 0.7rem;
}

.article-body h1 {
  font-size: 1.65rem;
}

.article-body h2 {
  padding-top: 0.2rem;
  color: var(--accent-strong);
  font-size: 1.35rem;
  border-top: 1px solid var(--border);
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body blockquote,
.article-body pre,
.article-body table {
  margin: 1rem 0;
}

.article-body img,
.article-body iframe {
  max-width: 100%;
}

.article-body img {
  height: auto;
  border-radius: 6px;
}

.article-body iframe {
  display: block;
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.article-body iframe.wp-embedded-content {
  position: static !important;
  clip: auto !important;
  width: min(100%, 474px) !important;
  min-height: 267px;
}

.article-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

.article-body th,
.article-body td {
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--border);
  vertical-align: top;
}

.article-body blockquote {
  padding: 0.2rem 0 0.2rem 1rem;
  color: var(--muted);
  border-left: 4px solid var(--accent);
}

.article-body code,
.article-body pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.article-body code {
  padding: 0.08rem 0.25rem;
  background: var(--surface-soft);
  border-radius: 4px;
}

.article-body pre {
  overflow-x: auto;
  padding: 1rem;
  background: var(--surface-soft);
  border-radius: 8px;
}

.site-footer__inner {
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  .home-hero h1 {
    font-size: 3.4rem;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .home-layout,
  .article-index,
  .article-layout {
    width: min(100% - 1rem, 820px);
    padding-top: 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  .home-hero h1 {
    font-size: 2.35rem;
  }

  .home-stats,
  .archive-summary {
    grid-template-columns: 1fr;
  }

  .article-header,
  .article-body {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .article-card {
    padding: 1rem;
  }
}