/* Sound Money — Bitcoin-themed blog styles */

:root {
  --bitcoin-orange: #F7931A;
  --bitcoin-orange-dark: #D67A0E;
  --bg-dark: #0D1117;
  --bg-card: #161B22;
  --bg-elevated: #1C2128;
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --text-muted: #6E7681;
  --border: #30363D;
  --link: #F7931A;
  --link-hover: #FFB84D;
  --code-bg: #0D1117;
  --pre-bg: #161B22;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --max-width: 1100px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-dark: #FFFFFF;
    --bg-card: #F6F8FA;
    --bg-elevated: #FFFFFF;
    --text-primary: #1F2328;
    --text-secondary: #57606A;
    --text-muted: #8C959F;
    --border: #D0D7DE;
    --link: #D67A0E;
    --link-hover: #F7931A;
    --code-bg: #F6F8FA;
    --pre-bg: #F6F8FA;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  }
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background-color: rgba(13, 17, 23, 0.95);
}

@media (prefers-color-scheme: light) {
  .site-header {
    background-color: rgba(255, 255, 255, 0.95);
  }
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.brand-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--bitcoin-orange);
  letter-spacing: -0.02em;
}

.brand-subtitle {
  margin: 4px 0 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.site-nav a {
  font-weight: 500;
  color: var(--text-primary);
}

.site-nav a:hover {
  color: var(--bitcoin-orange);
}

.language-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.language-current {
  font-weight: 600;
  color: var(--bitcoin-orange);
}

/* Main */
.main {
  flex: 1;
  padding: 48px 0;
}

/* Hero */
.hero {
  text-align: center;
  padding: 48px 0 64px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.hero-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin-bottom: 32px;
  box-shadow: var(--shadow);
}

.page-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  margin: 0 0 16px;
  color: var(--text-primary);
  line-height: 1.2;
}

.page-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* Language selection */
.language-selection {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 900;
  margin: 0 0 16px;
  color: var(--bitcoin-orange);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
}

.language-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  max-width: 600px;
  margin: 0 auto;
}

.language-card {
  display: block;
  padding: 40px 32px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.language-card:hover {
  transform: translateY(-4px);
  border-color: var(--bitcoin-orange);
  box-shadow: 0 8px 32px rgba(247, 147, 26, 0.15);
  text-decoration: none;
}

.language-card h2 {
  margin: 0 0 12px;
  font-size: 1.75rem;
  color: var(--text-primary);
}

.language-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Section titles */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 32px;
  color: var(--text-primary);
}

/* Post list */
.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 24px;
}

.post-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease;
}

.post-card:hover {
  border-color: var(--bitcoin-orange);
}

.post-card .post-title {
  margin: 0 0 8px;
  font-size: 1.4rem;
  font-weight: 700;
}

.post-card .post-title a {
  color: var(--text-primary);
}

.post-card .post-title a:hover {
  color: var(--bitcoin-orange);
}

.post-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.post-description {
  color: var(--text-secondary);
  margin: 0 0 16px;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.post-tag {
  display: inline-block;
  padding: 4px 10px;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-link {
  font-weight: 600;
  color: var(--bitcoin-orange);
}

/* Post article */
.post-article {
  max-width: 760px;
  margin: 0 auto;
}

.post-article .post-header {
  text-align: center;
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.post-article .post-title {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  margin: 0 0 16px;
  line-height: 1.2;
}

.post-hero-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin-top: 24px;
  box-shadow: var(--shadow);
}

.post-content {
  font-size: 1.05rem;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--text-primary);
  line-height: 1.3;
}

.post-content h2 {
  font-size: 1.75rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.post-content h3 {
  font-size: 1.35rem;
}

.post-content p {
  margin: 0 0 20px;
}

.post-content ul,
.post-content ol {
  margin: 0 0 24px;
  padding-left: 28px;
}

.post-content li {
  margin-bottom: 8px;
}

.post-content blockquote {
  margin: 24px 0;
  padding: 16px 24px;
  border-left: 4px solid var(--bitcoin-orange);
  background-color: var(--bg-card);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.post-content blockquote p:last-child {
  margin-bottom: 0;
}

.post-content pre {
  background-color: var(--pre-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  overflow-x: auto;
  margin: 24px 0;
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: 0.9rem;
}

.post-content code {
  background-color: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  font-family: "SF Mono", Monaco, Inconsolata, "Fira Code", monospace;
  font-size: 0.9em;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 24px 0;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 48px 0;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.post-content th,
.post-content td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}

.post-content th {
  background-color: var(--bg-card);
  font-weight: 600;
}

/* About article */
.about-article {
  max-width: 760px;
  margin: 0 auto;
}

.about-article p {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

/* Footer */
.site-footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-inner p {
  margin: 0;
}

/* Empty state */
.empty-posts {
  text-align: center;
  color: var(--text-secondary);
  padding: 48px 0;
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero {
    padding: 32px 0 48px;
  }

  .post-card {
    padding: 20px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}