/* ===================================
   Personal Blog CMS — Global Styles
   =================================== */

/* --- Google Fonts loaded in Base.astro --- */

:root {
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-text: #2c2c2c;
  --color-text-secondary: #6b6b6b;
  --color-text-muted: #999999;
  --color-border: #e8e4df;
  --color-border-light: #f0ece7;
  --color-accent: #c0392b;
  --color-accent-hover: #a93226;
  --color-code-bg: #f5f2ee;

  --font-display: 'Lora', 'Georgia', serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --max-width: 1080px;
  --content-width: 720px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --radius: 6px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);

  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); }

/* --- Header --- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.site-brand a {
  color: var(--color-text);
  text-decoration: none;
}

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

.site-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.site-tagline-header {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.1rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* --- Navigation --- */
.site-nav { display: flex; align-items: center; gap: 0; }

.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  transition: all var(--transition);
  letter-spacing: 0.01em;
}

.nav-link:hover {
  color: var(--color-accent);
  background: var(--color-border-light);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text);
  font-size: 1.5rem;
  line-height: 1;
}

/* --- Main Content --- */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  width: 100%;
}

/* --- Homepage --- */
.home-hero {
  text-align: center;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
}

.home-hero h1 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--spacing-xs);
}

.home-hero .tagline {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* --- Post Grid --- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-md);
}

.post-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.post-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--color-border-light);
}

.post-card-body {
  padding: var(--spacing-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card-meta {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.post-card-meta .reading-time { white-space: nowrap; }
.meta-dot { color: var(--color-border); }

.post-card h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.01em;
}

.post-card h2 a {
  color: var(--color-text);
  transition: color var(--transition);
}

.post-card h2 a:hover { color: var(--color-accent); }

.post-card .excerpt {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  flex: 1;
}

.post-card-tags {
  margin-top: var(--spacing-sm);
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  background: var(--color-code-bg);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition);
}

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

.featured-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* --- Single Post --- */
.post-single {
  max-width: var(--content-width);
  margin: 0 auto;
}

.post-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.post-header h1 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

.post-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.post-featured-image {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

/* --- Post Body (Markdown Content) --- */
.post-body {
  font-size: 1.05rem;
  line-height: 1.8;
}

.post-body h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.post-body h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xs);
}

.post-body p { margin-bottom: var(--spacing-md); }

.post-body ul, .post-body ol {
  margin-bottom: var(--spacing-md);
  padding-left: 1.5rem;
}

.post-body li { margin-bottom: var(--spacing-xs); }

.post-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: var(--spacing-md) 0;
  background: var(--color-code-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

.post-body pre {
  background: var(--color-code-bg);
  padding: var(--spacing-md);
  border-radius: var(--radius);
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  border: 1px solid var(--color-border);
}

.post-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

.post-body pre code { background: none; padding: 0; }

.post-body img {
  border-radius: var(--radius);
  margin: var(--spacing-md) 0;
  box-shadow: var(--shadow-sm);
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-lg) 0;
}

.post-body strong { font-weight: 700; }

/* --- Post Footer --- */
.post-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.post-tags-footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
}

.post-tags-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.post-nav a {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
  max-width: 48%;
}

.post-nav a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.post-nav .nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 0.2rem;
}

/* --- Page Styles --- */
.page-single {
  max-width: var(--content-width);
  margin: 0 auto;
}

.page-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--spacing-xs);
}

.page-header .subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
}

.page-body {
  font-size: 1.05rem;
  line-height: 1.8;
}

.page-body h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.page-body h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xs);
}

.page-body p { margin-bottom: var(--spacing-md); }
.page-body ul, .page-body ol {
  margin-bottom: var(--spacing-md);
  padding-left: 1.5rem;
}
.page-body li { margin-bottom: var(--spacing-xs); }
.page-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: var(--spacing-md) 0;
  background: var(--color-code-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

/* --- Contact Specific --- */
.contact-email-link {
  display: inline-block;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-accent);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  margin: var(--spacing-sm) 0 var(--spacing-lg);
  transition: all var(--transition);
}

.contact-email-link:hover {
  background: var(--color-accent);
  color: #fff;
}

/* --- Tags Page --- */
.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--spacing-lg);
}

.tags-list .tag {
  font-size: 0.85rem;
  padding: 0.4rem 0.8rem;
}

.tag-count {
  font-weight: 400;
  color: var(--color-text-muted);
  margin-left: 0.3rem;
}

/* --- Author Card --- */
.author-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-top: var(--spacing-lg);
}

.author-photo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.author-info h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.author-info p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  background: var(--color-surface);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.footer-social a {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

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

.footer-copy {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.footer-rss {
  margin-top: var(--spacing-xs);
}

.footer-rss a {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* --- 404 --- */
.not-found {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.not-found h1 {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.not-found p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.btn {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}

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

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

/* --- View All Link --- */
.view-all {
  text-align: center;
  margin-top: var(--spacing-lg);
}

.view-all a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent);
  padding: 0.5rem 1.2rem;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.view-all a:hover {
  background: var(--color-accent);
  color: #fff;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  html { font-size: 16px; }

  .header-inner { flex-wrap: wrap; }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--color-border-light);
  }

  .site-nav.open { display: flex; }

  .nav-link {
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--color-border-light);
    width: 100%;
  }

  .mobile-menu-toggle { display: block; }

  .posts-grid { grid-template-columns: 1fr; }

  .home-hero h1 { font-size: 1.8rem; }
  .post-header h1 { font-size: 1.8rem; }
  .page-header h1 { font-size: 1.8rem; }

  .post-nav { flex-direction: column; }
  .post-nav a { max-width: 100%; }

  .author-card { flex-direction: column; align-items: center; text-align: center; }
}

@media (max-width: 480px) {
  .posts-grid { grid-template-columns: 1fr; }
  .home-hero h1 { font-size: 1.5rem; }
}