:root {
  --bg-dark: #0a0a0a;
  --bg-elevated: #121212;
  --border-color: #2a2a2a;
  --border-accent: #333;
  --text-primary: #e8e4db;
  --text-secondary: #8a8578;
  --accent-orange: #d4733d;
  --code-bg: #0d0d0d;
  --font-mono: 'IBM Plex Mono', Menlo, Consolas, monospace;
  --font-serif: 'IBM Plex Serif', 'Source Serif 4', Georgia, serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-serif);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  padding: 2rem 1rem;
}

/* Subtle dot grid pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.4;
  background-image: radial-gradient(circle, #1a1a1a 1px, transparent 1px);
  background-size: 24px 24px;
}

.container {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
}

/* Header */
header {
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-name {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.site-name a {
  color: var(--text-primary);
  text-decoration: none;
  display: block;
  padding: 0.5rem 0.75rem;
  margin: -0.5rem -0.75rem;
}

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

nav {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  margin: -0.5rem;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
  padding: 0.5rem 0.75rem;
  display: block;
}

nav a:hover,
nav a.active {
  color: var(--accent-orange);
}

/* Main content */
main {
  padding: 1.5rem;
}

.status-line {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

/* Section */
section {
  border: 1px solid var(--border-color);
  background-color: var(--bg-dark);
}

/* Section headers */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-elevated);
  margin: 0;
}

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

.post-list li {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.post-list li:last-child {
  border-bottom: none;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  width: 5.5rem;
}

.post-title {
  font-family: var(--font-serif);
  font-size: 0.9375rem;
}

.post-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.post-list-series {
  display: flex;
  gap: 0.375rem;
}

.post-list-series a {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--accent-orange);
  text-decoration: none;
  padding: 0.2rem 0.4rem;
  border: 1px solid var(--accent-orange);
  text-transform: lowercase;
}

.post-list-series a:hover {
  background-color: var(--accent-orange);
  color: var(--bg-dark);
}

.post-list-tags {
  display: flex;
  gap: 0.375rem;
  margin-left: auto;
}

.post-list-tags a {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.2rem 0.4rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-dark);
  text-transform: lowercase;
}

.post-list-tags a:hover {
  color: var(--accent-orange);
  border-color: var(--accent-orange);
}

/* Archive link */
.archive-link {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 0.875rem 1rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-elevated);
}

.archive-link a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.archive-link a:hover {
  color: var(--accent-orange);
}

.archive-link a::after {
  content: ' \2192';
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  display: flex;
  gap: 1.5rem;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

/* Back link */
.back-link {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.back-link a {
  color: var(--text-secondary);
  text-decoration: none;
}

.back-link a:hover {
  color: var(--accent-orange);
}

.back-link a::before {
  content: '\2190 ';
}

/* Article / Post page */
article {
  border: 1px solid var(--border-color);
  background-color: var(--bg-dark);
}

.post-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-elevated);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.post-series {
  display: block;
  margin-bottom: 1rem;
}

.post-series a {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent-orange);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--accent-orange);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-series a:hover {
  background-color: var(--accent-orange);
  color: var(--bg-dark);
}

.post-header .post-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.post-header .post-title {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

.post-content {
  padding: 1.5rem;
  line-height: 1.7;
}

.post-content h2 {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.post-content h2:first-child {
  margin-top: 0;
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content a {
  color: var(--accent-orange);
  text-decoration: none;
}

.post-content a:hover {
  text-decoration: underline;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.5rem;
}

.post-content strong {
  font-weight: 500;
}

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--code-bg);
  padding: 0.2em 0.4em;
  border: 1px solid var(--border-color);
}

pre {
  background-color: var(--code-bg);
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-color);
  font-size: 0.8125rem;
  line-height: 1.6;
}

pre code {
  background: none;
  padding: 0;
  border: none;
}

/* Images */
.post-content img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border-color);
  margin: 1.5rem 0;
  display: block;
}

/* Tags */
.tag-list {
  list-style: none;
  padding: 0;
}

.tag-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.tag-list li:last-child {
  border-bottom: none;
}

.tag-list a {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--text-primary);
  text-decoration: none;
}

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

.tag-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.post-tags {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.post-tags-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.post-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.post-tags-list a {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-dark);
}

.post-tags-list a:hover {
  color: var(--accent-orange);
  border-color: var(--accent-orange);
}

.term-posts {
  border: none;
  background: none;
}

.term-posts li {
  padding: 0.75rem 0;
}

/* ========================================
   RESPONSIVE BREAKPOINTS
   ======================================== */

/* 4K and ultra-wide (2560px+) */
@media (min-width: 2560px) {
  html {
    font-size: 18px;
  }

  body {
    padding: 4rem 2rem;
  }

  .container {
    max-width: 800px;
  }

  body::before {
    background-size: 32px 32px;
  }
}

/* Large desktop (1440px - 2559px) */
@media (min-width: 1440px) and (max-width: 2559px) {
  body {
    padding: 3rem 2rem;
  }

  .container {
    max-width: 850px;
  }
}

/* Desktop (1024px - 1439px) */
@media (min-width: 1024px) and (max-width: 1439px) {
  body {
    padding: 2.5rem 1.5rem;
  }
}

/* Tablet (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  body {
    padding: 2rem 1.5rem;
  }

  .container {
    max-width: 680px;
  }
}

/* Large mobile / Small tablet (600px - 767px) */
@media (min-width: 600px) and (max-width: 767px) {
  body {
    padding: 1.5rem 1rem;
  }

  .container {
    max-width: 100%;
  }

  header {
    padding: 1.25rem;
  }

  main {
    padding: 1.25rem;
  }
}

/* Mobile (480px - 599px) */
@media (min-width: 480px) and (max-width: 599px) {
  body {
    padding: 1rem 0.75rem;
  }

  .container {
    max-width: 100%;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
  }

  main {
    padding: 1.25rem;
  }

  .post-list li {
    flex-direction: column;
    gap: 0.375rem;
    padding: 1rem;
  }

  .post-date {
    width: auto;
  }

  .post-header {
    padding: 1rem 1.25rem;
  }

  .post-content {
    padding: 1.25rem;
  }
}

/* Small mobile (< 480px) */
@media (max-width: 479px) {
  html {
    font-size: 15px;
  }

  body {
    padding: 0;
  }

  body::before {
    background-size: 20px 20px;
  }

  .container {
    max-width: 100%;
    border-left: none;
    border-right: none;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.875rem;
    padding: 1rem;
  }

  .site-name {
    font-size: 0.9375rem;
  }

  nav ul {
    gap: 1.25rem;
  }

  nav a {
    padding: 0.25rem 0;
  }

  main {
    padding: 1rem;
  }

  .descriptor {
    padding-bottom: 1rem;
    margin-bottom: 1rem;
  }

  .section-label {
    padding: 0.625rem 0.875rem;
    font-size: 0.625rem;
  }

  .post-list li {
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.875rem;
  }

  .post-date {
    width: auto;
    font-size: 0.6875rem;
  }

  .post-title {
    font-size: 0.875rem;
  }

  .archive-link {
    padding: 0.75rem 0.875rem;
    font-size: 0.75rem;
  }

  footer {
    padding: 0.875rem 1rem;
  }

  .back-link {
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    font-size: 0.75rem;
  }

  .post-header {
    padding: 1rem;
  }

  .post-header .post-title {
    font-size: 1.125rem;
  }

  .post-content {
    padding: 1rem;
  }

  .post-content h2 {
    font-size: 0.8125rem;
    margin-top: 1.5rem;
  }

  pre {
    padding: 0.875rem;
    font-size: 0.75rem;
    margin-left: -1rem;
    margin-right: -1rem;
    border-left: none;
    border-right: none;
  }

  .post-content img {
    margin-left: -1rem;
    margin-right: -1rem;
    max-width: calc(100% + 2rem);
    border-left: none;
    border-right: none;
  }
}

a[href*="/series/photoblog"] {
  color: #57a7ff;
  border-color: #57a7ff;
}

a[href*="/series/photoblog"]:hover {
  background-color: #57a7ff;
  color: var(--bg-dark);
}