/* ========================================
   Yūhi (夕陽) — Site Stylesheet
   Japanese-inspired minimalism
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #faf8f5;
  --text: #2a2a2a;
  --accent: #c75c2e;
  --accent-hover: #a94a22;
  --meta: #8a8580;
  --border: #e8e4df;
  --code-bg: #f0ece7;
  --max-width: 680px;
}

html {
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: 'Noto Serif JP', 'Georgia', serif;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 0.5em;
}

h2 {
  font-size: 1.35rem;
  margin-top: 2em;
  margin-bottom: 0.5em;
}

h3 {
  font-size: 1.1rem;
  margin-top: 1.5em;
  margin-bottom: 0.4em;
}

p {
  margin-bottom: 1.2em;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

strong {
  font-weight: 600;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.2em;
  margin: 1.5em 0;
  color: var(--meta);
  font-style: italic;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

ul, ol {
  padding-left: 1.4em;
  margin-bottom: 1.2em;
}

li {
  margin-bottom: 0.3em;
}

/* --- Code --- */
code {
  font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', 'Menlo', monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

pre {
  background: var(--code-bg);
  padding: 1.2em 1.4em;
  border-radius: 6px;
  overflow-x: auto;
  margin: 1.5em 0;
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  font-size: 0.85em;
}

/* --- Layout --- */
.content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  flex: 1;
  width: 100%;
}

/* --- Header --- */
.site-header {
  border-bottom: 1px solid var(--border);
}

.site-header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.site-title:hover {
  color: var(--accent);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.8rem;
  padding: 0;
  margin: 0;
}

.nav-links a {
  color: var(--meta);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  text-align: center;
  width: 100%;
}

.site-footer p {
  font-size: 0.85rem;
  color: var(--meta);
  margin-bottom: 0.3em;
}

.site-footer a {
  color: var(--meta);
  font-size: 0.85rem;
}

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

/* --- Homepage --- */
.homepage-content {
  margin-bottom: 3rem;
}

.homepage-content p:first-child {
  font-size: 1.15rem;
  line-height: 1.8;
}

.recent-posts h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--meta);
  margin-top: 0;
  margin-bottom: 1em;
}

/* --- Post List --- */
.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  margin-bottom: 0.8em;
}

.post-list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  color: var(--text);
  text-decoration: none;
  padding: 0.4em 0;
}

.post-list a:hover .post-title {
  color: var(--accent);
}

.post-title {
  font-weight: 500;
  transition: color 0.2s ease;
}

.post-list time {
  font-size: 0.85rem;
  color: var(--meta);
  white-space: nowrap;
  flex-shrink: 0;
}

.post-description {
  font-size: 0.9rem;
  color: var(--meta);
  margin: 0 0 0.3em 0;
}

.list-description {
  margin-bottom: 2rem;
  color: var(--meta);
}

/* --- Single Post --- */
.post-header {
  margin-bottom: 2rem;
}

.post-meta {
  font-size: 0.85rem;
  color: var(--meta);
  margin-top: 0.5em;
}

.reading-time {
  margin-left: 0.2em;
}

.post-content {
  margin-bottom: 2rem;
}

.post-tags {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.tag {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--meta);
  margin-right: 0.8em;
}

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

/* --- Responsive --- */
@media (max-width: 600px) {
  html {
    font-size: 16px;
  }

  .site-header nav {
    flex-direction: column;
    gap: 0.8rem;
  }

  .nav-links {
    gap: 1.2rem;
  }

  .post-list a {
    flex-direction: column;
    gap: 0.1rem;
  }

  h1 {
    font-size: 1.5rem;
  }
}