:root,
[data-theme="light"] {
  --bg-color: #8fbc8b;
  --text-color: #121212;
  --prose-color: #121212;
  --code-bg: rgba(0, 0, 0, 0.15);
  --rule-color: rgba(18, 18, 18, 0.35);

  --callout-note-color: #0e325b;
  --callout-note-border: #1a4a7d;
  --callout-note-bg: rgba(10, 45, 90, 0.08);
  --callout-note-header-bg: rgba(10, 45, 90, 0.16);

  --callout-tip-color: #0f380f;
  --callout-tip-border: #1b521b;
  --callout-tip-bg: rgba(15, 60, 15, 0.08);
  --callout-tip-header-bg: rgba(15, 60, 15, 0.16);

  --callout-important-color: #45105c;
  --callout-important-border: #591d73;
  --callout-important-bg: rgba(70, 15, 95, 0.08);
  --callout-important-header-bg: rgba(70, 15, 95, 0.16);

  --callout-warning-color: #593200;
  --callout-warning-border: #7a4400;
  --callout-warning-bg: rgba(100, 55, 0, 0.08);
  --callout-warning-header-bg: rgba(100, 55, 0, 0.16);

  --callout-caution-color: #6b1010;
  --callout-caution-border: #8f1a1a;
  --callout-caution-bg: rgba(120, 15, 15, 0.08);
  --callout-caution-header-bg: rgba(120, 15, 15, 0.16);
}

[data-theme="dark"] {
  --bg-color: #121212;
  --text-color: #8fbc8b;
  --prose-color: #8fbc8b;
  --code-bg: rgba(255, 255, 255, 0.07);
  --rule-color: rgba(143, 188, 139, 0.3);

  --callout-note-color: #58a6ff;
  --callout-note-border: #388bfd;
  --callout-note-bg: rgba(56, 139, 253, 0.1);
  --callout-note-header-bg: rgba(56, 139, 253, 0.2);

  --callout-tip-color: #8fbc8b;
  --callout-tip-border: #8fbc8b;
  --callout-tip-bg: rgba(143, 188, 139, 0.1);
  --callout-tip-header-bg: rgba(143, 188, 139, 0.2);

  --callout-important-color: #bc8cff;
  --callout-important-border: #a371f7;
  --callout-important-bg: rgba(163, 113, 247, 0.1);
  --callout-header-bg: rgba(163, 113, 247, 0.2);

  --callout-warning-color: #e3b341;
  --callout-warning-border: #d29922;
  --callout-warning-bg: rgba(210, 153, 34, 0.1);
  --callout-warning-header-bg: rgba(210, 153, 34, 0.2);

  --callout-caution-color: #f85149;
  --callout-caution-border: #f85149;
  --callout-caution-bg: rgba(248, 81, 73, 0.1);
  --callout-caution-header-bg: rgba(248, 81, 73, 0.2);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: "Tiny5", sans-serif;
  min-height: 100vh;
}

::selection {
  background-color: var(--text-color);
  color: var(--bg-color);
}

a {
  color: inherit;
}

/* Header background blocker to prevent scrolled article content from bleeding through */
.blog-bar-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--bar-height, 58px);
  background: var(--bg-color);
  border-bottom: 2px solid var(--rule-color);
  z-index: 2;
  pointer-events: none;
}

/* Page header bar */
.blog-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--bg-color);
  border-bottom: 2px solid var(--rule-color);
}

body.is-transitioning *,
body.is-transitioning *::before,
body.is-transitioning *::after {
  transition: none !important;
}

body.is-transitioning .blog-bar {
  background: transparent !important;
  border-bottom-color: transparent !important;
}

body.is-transitioning.is-scrolled .blog-main {
  clip-path: inset(var(--bar-height, 58px) 0 0 0);
}

#pixel-transition {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
  opacity: 0;
}

#pixel-transition.active {
  opacity: 1;
}

.blog-nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
}

.blog-brand-link {
  text-decoration: none;
  color: var(--text-color);
  opacity: 0.85;
  transition: transform 0.15s steps(3), opacity 0.15s;
  position: relative;
}

.blog-brand-link::after {
  content: "";
  position: absolute;
  inset: -4px;
  pointer-events: auto;
  transform: translateY(2px);
}

.blog-brand-link:hover,
.blog-brand-link:focus-visible {
  opacity: 1;
  transform: translateY(-2px);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.blog-nav-slash {
  opacity: 0.4;
}

.blog-bar-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.font-toggle,
.theme-toggle {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--text-color);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s steps(3);
  position: relative;
  line-height: 1;
}

.font-toggle {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0;
}

body.reading-mode .font-toggle {
  font-family: "Tiny5", sans-serif;
  font-size: 1.45rem;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.theme-toggle {
  width: 24px;
  height: 24px;
}

.font-toggle::after,
.theme-toggle::after {
  content: "";
  position: absolute;
  inset: -6px;
  transition: transform 0.15s steps(3);
}

.font-toggle:hover,
.theme-toggle:hover {
  transform: translateY(-4px);
}

.font-toggle:hover::after,
.theme-toggle:hover::after {
  transform: translateY(4px);
}

.font-toggle:active,
.theme-toggle:active {
  transform: translateY(2px);
  transition: transform 0.05s steps(2);
}

.font-toggle:active::after,
.theme-toggle:active::after {
  transform: translateY(-2px);
  transition: transform 0.05s steps(2);
}

/* Page entrance animation */
@keyframes blogFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.blog-main {
  position: relative;
  z-index: 10;
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
  animation: blogFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) backwards;
}

@media (prefers-reduced-motion: reduce) {
  .blog-main {
    animation: none;
  }
}

.crumbs {
  font-size: 0.95rem;
  opacity: 0.65;
  margin-bottom: 1.5rem;
}

.post-header h1 {
  font-size: clamp(2rem, 6vw, 3.2rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.15;
  margin: 0 0 1rem;
}

.post-meta {
  margin: 0;
  font-size: 1.05rem;
  opacity: 0.75;
}

.post-tags {
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  border: 2px solid var(--text-color);
  padding: 0.15rem 0.55rem;
  font-size: 0.9rem;
}

.post-header {
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--rule-color);
}

/* Index post list */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.post-card {
  display: block;
  text-decoration: none;
  padding: 1.25rem 1.5rem;
  border: 2px solid var(--text-color);
  background: transparent;
  color: var(--text-color);
  position: relative;
  transition: transform 0.12s steps(2), box-shadow 0.12s steps(2), background-color 0.12s, color 0.12s;
}

/* Anti-flicker hit area */
.post-card::after {
  content: "";
  position: absolute;
  inset: -6px;
  pointer-events: auto;
}

.post-card:hover,
.post-card:focus-visible {
  background: var(--text-color);
  color: var(--bg-color);
  box-shadow: 4px 4px 0 var(--rule-color);
  transform: translate(-2px, -2px);
}

.post-card-title {
  display: block;
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.post-card-desc,
.post-card-meta {
  display: block;
  font-size: 1rem;
  opacity: 0.85;
}

.post-card-meta {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  opacity: 0.7;
}

/* Prose: Default authentic retro pixel font (Tiny5) */
.prose {
  color: var(--prose-color);
  font-family: "Tiny5", sans-serif;
  font-size: 1.25rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  overflow-wrap: break-word;
}

/* Reading mode toggle (Clean modern sans-serif) */
body.reading-mode .prose {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.05rem;
  line-height: 1.75;
  letter-spacing: normal;
}

.prose h2,
.prose h3,
.prose h4 {
  font-family: "Tiny5", sans-serif;
  font-weight: 400;
  color: var(--text-color);
  letter-spacing: 0.04em;
  line-height: 1.2;
  scroll-margin-top: 5rem;
}

.prose h2 {
  font-size: 2.1rem;
  margin: 3.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--rule-color);
}

.prose h3 {
  font-size: 1.6rem;
  margin: 2.5rem 0 0.75rem;
}

.prose h4 {
  font-size: 1.3rem;
  margin: 2rem 0 0.5rem;
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 1.2rem;
}

.prose li {
  margin-bottom: 0.35rem;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose strong {
  font-weight: 700;
}

.prose hr {
  border: none;
  border-top: 2px solid var(--rule-color);
  margin: 2.5rem 0;
}

/* Inline code: NO rectangle border, clean subtle background */
.prose :not(pre) > code {
  font-family: inherit;
  font-size: 0.92em;
  background: rgba(128, 128, 128, 0.18);
  border: none !important;
  padding: 0.05em 0.35em;
  margin: 0 0.15em;
  border-radius: 0;
}

[data-theme="dark"] .prose :not(pre) > code {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-color);
}

[data-theme="light"] .prose :not(pre) > code {
  background: rgba(0, 0, 0, 0.12);
  color: var(--text-color);
}

/* Inline code in Reading Mode */
body.reading-mode .prose :not(pre) > code {
  font-family: ui-monospace, SFMono-Regular, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: 0.88em;
}

/* Terminal / Code blocks */
.code-block {
  margin: 1.6rem 0;
  border: 2px solid var(--rule-color);
  background: var(--code-bg);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0.85rem;
  background: rgba(0, 0, 0, 0.15);
  border-bottom: 2px solid var(--rule-color);
  font-family: "Tiny5", sans-serif;
  font-size: 0.95rem;
}

[data-theme="dark"] .code-header {
  background: rgba(255, 255, 255, 0.04);
}

.code-lang {
  opacity: 0.75;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--rule-color);
  padding: 0.2rem 0.55rem;
  color: var(--text-color);
  font-family: inherit;
  font-size: 0.85rem;
  line-height: 1;
  cursor: pointer;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  opacity: 0.85;
  position: relative;
  transition: transform 0.08s steps(2), background-color 0.08s, color 0.08s, border-color 0.08s, opacity 0.15s;
}

.copy-btn::after {
  content: "";
  position: absolute;
  inset: -5px;
  transition: transform 0.08s steps(2);
}

.copy-btn:hover,
.copy-btn:focus-visible {
  opacity: 1;
  transform: translateY(-2px);
  border-color: var(--text-color);
  background-color: var(--text-color);
  color: var(--bg-color);
}

.copy-btn:hover::after,
.copy-btn:focus-visible::after {
  transform: translateY(2px);
}

.copy-btn.copied {
  opacity: 1;
  border-color: var(--text-color);
  background-color: var(--text-color);
  color: var(--bg-color);
}

.copy-icon,
.check-icon {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  display: block;
}

.check-icon {
  display: none;
}

.copy-btn.copied .copy-icon {
  display: none;
}

.copy-btn.copied .check-icon {
  display: block;
}

.code-block pre {
  margin: 0;
  padding: 1.1rem 1.25rem;
  background: transparent;
  border: none !important;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--text-color) rgba(0, 0, 0, 0.15);
}

/* Sleek custom scrollbars: remove native ugly arrow buttons and bulky track */
.code-block pre::-webkit-scrollbar,
.table-wrap::-webkit-scrollbar {
  height: 6px;
  background: rgba(0, 0, 0, 0.2);
}

.code-block pre::-webkit-scrollbar-thumb,
.table-wrap::-webkit-scrollbar-thumb {
  background: var(--text-color);
  border-radius: 0;
}

.code-block pre::-webkit-scrollbar-button,
.table-wrap::-webkit-scrollbar-button {
  display: none;
  width: 0;
  height: 0;
}

/* Terminal / Code blocks in Pixel mode (default) */
.code-block pre code {
  border: none !important;
  background: none !important;
  padding: 0 !important;
  margin: 0 !important;
  font-family: "Tiny5", monospace;
  font-size: 1.15rem;
  line-height: 1.5;
  letter-spacing: 0.03em;
  tab-size: 2;
  white-space: pre;
  color: var(--text-color);
}

/* Code blocks in Reading Mode */
body.reading-mode .code-block pre code {
  font-family: ui-monospace, SFMono-Regular, "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;
  font-size: 0.94rem;
  line-height: 1.6;
  letter-spacing: normal;
}

.code-comment {
  opacity: 0.6;
}

[data-theme="dark"] .code-comment {
  color: #8fbc8b;
}

[data-theme="light"] .code-comment {
  color: rgba(255, 255, 255, 0.75);
}

.prose blockquote {
  margin: 0 0 1.2rem;
  padding: 0.25rem 1.25rem;
  border-left: 4px solid var(--rule-color);
  opacity: 0.9;
}

/* GitHub-style alerts / Callouts */
.callout {
  margin: 1.6rem 0;
  border: 2px solid var(--callout-border);
  background-color: var(--callout-bg);
}

.callout-header {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  background-color: var(--callout-header-bg);
  border-bottom: 2px solid var(--callout-border);
  color: var(--callout-color);
  font-family: "Tiny5", sans-serif;
  font-size: 1.05rem;
  line-height: 1;
}

.callout-icon {
  flex-shrink: 0;
  display: block;
}

.callout-title {
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.callout-body {
  padding: 0.85rem 1rem;
  color: var(--prose-color);
}

.callout-body p:last-child {
  margin-bottom: 0;
}

.callout-note {
  --callout-color: var(--callout-note-color);
  --callout-border: var(--callout-note-border);
  --callout-bg: var(--callout-note-bg);
  --callout-header-bg: var(--callout-note-header-bg);
}

.callout-tip {
  --callout-color: var(--callout-tip-color);
  --callout-border: var(--callout-tip-border);
  --callout-bg: var(--callout-tip-bg);
  --callout-header-bg: var(--callout-tip-header-bg);
}

.callout-important {
  --callout-color: var(--callout-important-color);
  --callout-border: var(--callout-important-border);
  --callout-bg: var(--callout-important-bg);
  --callout-header-bg: var(--callout-important-header-bg);
}

.callout-warning {
  --callout-color: var(--callout-warning-color);
  --callout-border: var(--callout-warning-border);
  --callout-bg: var(--callout-warning-bg);
  --callout-header-bg: var(--callout-warning-header-bg);
}

.callout-caution {
  --callout-color: var(--callout-caution-color);
  --callout-border: var(--callout-caution-border);
  --callout-bg: var(--callout-caution-bg);
  --callout-header-bg: var(--callout-caution-header-bg);
}

.table-wrap {
  overflow-x: auto;
  margin: 0 0 1.4rem;
}

.prose table {
  border-collapse: collapse;
  width: 100%;
  font-size: 1.05rem;
}

body.reading-mode .prose table {
  font-size: 0.95rem;
}

.prose th,
.prose td {
  border: 2px solid var(--rule-color);
  padding: 0.5rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.prose th {
  font-family: "Tiny5", sans-serif;
  font-weight: 400;
  color: var(--text-color);
}

.prose img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem auto;
}

@media (max-width: 600px) {
  .blog-bar {
    padding: 0.75rem 1.25rem;
  }

  .blog-bar-backdrop {
    height: var(--bar-height, 50px);
  }

  .blog-main {
    padding: 2rem 1.25rem 4rem;
  }

  .prose {
    font-size: 1.15rem;
  }

  .prose h2 {
    font-size: 1.7rem;
  }
}