:root {
  --bg-dark: #1a1b26;
  --bg-medium: #24283b;
  --bg-light: #2f3549;
  --bg-hover: #3b4261;
  --fg-dark: #a9b1d6;
  --fg-light: #c0caf5;
  --fg-dim: #a1a4b4;
  --blue: #7aa2f7;
  --purple: #bb9af7;
  --green: #9ece6a;
  --red: #f7768e;
  --orange: #e0af68;
  --cyan: #7dcfff;
  --yellow: #e0af68;
  --teal: #73daca;
  --tui-border: 3px double var(--bg-hover);
}

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

body {
  font-family:
    "JetBrains Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;
  background-color: var(--bg-dark);
  color: var(--fg-dark);
  line-height: 1.7;
  min-height: 100vh;
}

img {
  filter: grayscale(0%);
  -webkit-filter: grayscale(0%); /* Safari compatibility */
}

img.no-grayscale {
  filter: grayscale(0%);
  -webkit-filter: grayscale(0%);
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header - TUI menubar style */
header {
  background-color: var(--bg-light);
  border-bottom: var(--tui-border);
  padding: 0.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 4rem;
  width: auto;
  background-color: #fff;
  border-radius: 6px;
}

/* Hamburger button */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--bg-hover);
  cursor: pointer;
  padding: 4px;
  border-radius: 0;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--fg-dark);
  transition: all 0.2s;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Nav - hidden by default */
nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--bg-light);
  border-bottom: var(--tui-border);
  z-index: 99;
}

nav.open {
  display: block;
}

nav ul {
  display: flex;
  flex-direction: column;
  list-style: none;
  gap: 0;
}

nav li {
  border-bottom: var(--tui-border);
}

nav li:last-child {
  border-bottom: none;
}

nav a {
  color: var(--fg-dark);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.6rem 1rem;
  display: block;
  transition: all 0.15s;
}

nav a:hover {
  background-color: var(--bg-hover);
  color: var(--green);
}

/* Hero - TUI terminal style */
.hero {
  flex: 1;
  padding: 0;
  background: none;
  border: none;
}

.hero h1 {
  font-size: 1.1rem;
  color: var(--fg-light);
  margin-bottom: 0.2rem;
}

.hero h1 span {
  color: var(--green);
}

.hero p {
  font-size: 0.75rem;
  color: var(--fg-dim);
  max-width: none;
}

.hero p span {
  color: var(--green);
}

/* Categories - TUI style */
.categories {
  padding: 1rem 0;
  background-color: var(--bg-dark);
}

.categories .container {
  display: flex;
  justify-content: center;
}

.filter-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.category-tabs {
  display: flex;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
}

.category-tab {
  padding: 0.4rem 1rem;
  background-color: var(--bg-medium);
  border: none;
  border-right: 1px solid var(--bg-hover);
  color: var(--fg-dim);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 0;
}

.category-tab:last-child {
  border-right: none;
}

.category-tab:hover {
  background-color: var(--bg-hover);
  color: var(--fg-light);
}

.category-tab.active {
  background-color: var(--bg-light);
  color: var(--green);
  font-weight: bold;
}

/* Blog Grid */
.blog-section {
  padding: 2rem 0;
}

.section-title {
  font-size: 1rem;
  color: var(--fg-dim);
  margin-bottom: 1.5rem;
  padding: 0.5rem 0.75rem;
  background-color: var(--bg-light);
  border: var(--tui-border);
  border-radius: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: inline-block;
}

.section-title-category {
  color: var(--green);
}

.section-title-tag {
  color: var(--purple);
}

.section-title-posts {
  color: var(--blue);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.5rem;
}

/* TUI-style blog card */
.blog-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.blog-card {
  background-color: var(--bg-medium);
  border: var(--tui-border);
  border-radius: 0;
  border-width: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color 0.35s ease;
}

.blog-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--purple), var(--green));
}

.blog-card-link:hover .blog-card {
  border-color: var(--fg-dim);
}

.blog-card-link:hover .blog-card .title-prefix {
  color: var(--cyan);
}

.blog-card-link:hover .blog-card .title-suffix {
  color: #fff;
}

.tui-dot {
  width: 8px;
  height: 8px;
  border-radius: 0;
  display: inline-block;
}

.tui-dot-red {
  background-color: var(--red);
}
.tui-dot-yellow {
  background-color: var(--yellow);
}
.tui-dot-green {
  background-color: var(--green);
}

/* Card image area - TUI style with border */
.blog-card-image-wrapper {
  border-bottom: var(--tui-border);
  position: relative;
  background-color: var(--bg-dark);
}

.blog-card-image {
  width: 100%;
  height: 160px;
  object-fit: contain;
  display: block;
  filter: saturate(0.8) brightness(0.9);
  transition: filter 0.35s ease;
  filter: grayscale(100%);
  -webkit-filter: grayscale(100%); /* Safari compatibility */
}

.blog-card:hover .blog-card-image {
  filter: saturate(1) brightness(1);
}

.blog-card-image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.3rem 0.75rem;
  background: linear-gradient(transparent, var(--bg-dark));
  font-size: 0.65rem;
  color: var(--fg-dim);
}

/* Card content area */
.blog-card-content {
  padding: 0.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-title {
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  font-weight: 500;
}

.blog-card-title .title-prefix {
  color: var(--blue);
  transition: color 0.3s ease;
}

.blog-card-title .title-suffix {
  color: var(--fg-light);
  transition: color 0.3s ease;
}

.blog-card-excerpt {
  font-size: 0.8rem;
  color: var(--fg-dim);
  margin-bottom: 0.75rem;
  line-height: 1.5;
  flex: 1;
}

/* Separator line */
.blog-card-separator {
  border: none;
  border-top: 1px dashed var(--bg-hover);
  margin: 0.5rem 0;
}

/* Card status bar */
.blog-card-statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0.75rem;
  background-color: var(--bg-light);
  border-top: var(--tui-border);
  font-size: 0.65rem;
  color: var(--fg-dim);
}

.blog-card-statusbar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.blog-card-date {
  color: var(--fg-dim);
}

.blog-card-statusbar-mode {
  color: var(--green);
  font-weight: bold;
}

.blog-card-tags {
  display: flex;
  gap: 0.4rem;
}

.tag {
  padding: 0.18rem 0.52rem;
  background-color: var(--bg-dark);
  border: 1px solid rgba(187, 154, 247, 0.35);
  border-radius: 0;
  font-size: 0.68rem;
  color: var(--purple);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.tag-nav {
  text-decoration: none;
  transition: all 0.15s;
  color: var(--fg-dim);
  background-color: var(--bg-medium);
  border-color: rgba(187, 154, 247, 0.22);
}

.tag-nav:hover {
  border-color: rgba(187, 154, 247, 0.5);
  color: var(--fg-light);
}

.tag-nav.active {
  border-color: rgba(187, 154, 247, 0.6);
  background-color: var(--bg-light);
  color: var(--purple);
  font-weight: bold;
}

.tag-link {
  text-decoration: none;
}

.tag-link:hover {
  border-color: rgba(187, 154, 247, 0.5);
  color: var(--fg-light);
}

/* Post Page - TUI style */
.post-header {
  padding: 1.5rem 0;
  background-color: var(--bg-dark);
}

.post-title {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.post-title .title-prefix {
  color: var(--blue);
}

.post-title .title-suffix {
  color: var(--fg-light);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--fg-dim);
  font-size: 0.8rem;
}

.post-meta-date {
  color: var(--fg-dim);
}

.post-meta-sep {
  color: var(--bg-hover);
}

.post-meta-category {
  color: var(--purple);
}

.post-meta-read {
  color: var(--green);
}

.post-image-wrapper {
  border: var(--tui-border);
}

.post-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.85) brightness(0.92);
}

.post-intro {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.post-intro .post-image-wrapper {
  flex: 0 0 30%;
  border: var(--tui-border);
}

.post-intro .post-image {
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  display: block;
  filter: saturate(0.85) brightness(0.92);
}

.post-intro-text {
  flex: 1;
  display: flex;
  align-items: center;
}

.post-intro-text p {
  color: var(--fg-dark);
  font-size: 0.9rem;
  line-height: 1.6;
}

.post-body {
  padding: 0.5rem 0;
}

.post-layout .post-image-wrapper {
  flex: 0 0 30%;
  max-height: 400px;
}

.post-layout .post-body {
  flex: 1;
}

.post-content {
  padding: 2rem 0;
}

.post-content .container {
  border: var(--tui-border);
  padding: 1.5rem;
  background-color: var(--bg-medium);
}

.post-body {
  padding: 0.5rem 0;
}

.post-content h2 {
  color: var(--fg-light);
  font-size: 1.2rem;
  margin: 1.5rem 0 0.75rem;
  padding: 0.3rem 0.75rem;
  background-color: var(--bg-light);
  border-left: 2px solid var(--green);
}

.post-content h3 {
  color: var(--green);
  font-size: 1rem;
  margin: 1.25rem 0 0.5rem;
}

.post-content p {
  margin-bottom: 1rem;
  color: var(--fg-dark);
  font-size: 0.85rem;
  line-height: 1.6;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
}

.post-content ul {
  list-style: none;
  padding-left: 0;
}

.post-content ul li::before {
  content: "~ ";
  color: var(--green);
}

.post-body strong {
  color: var(--orange);
  font-weight: 700;
}

.post-body strong {
  color: var(--orange);
  font-weight: 700;
}

.post-content code {
  background-color: var(--bg-dark);
  padding: 0.15rem 0.4rem;
  border-radius: 0;
  font-size: 0.8em;
  color: var(--orange);
  border: var(--tui-border);
}

.post-content pre {
  background-color: var(--bg-dark);
  padding: 1rem;
  border-radius: 0;
  overflow-x: auto;
  margin-bottom: 1rem;
  border: var(--tui-border);
  border-left: 2px solid var(--purple);
}

.post-content pre code {
  background: none;
  padding: 0;
  color: var(--fg-dark);
  border: none;
}

.post-separator {
  border: none;
  border-top: 1px dashed var(--bg-hover);
  margin: 1.5rem 0;
}

.post-statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0.75rem;
  background-color: var(--bg-light);
  border: var(--tui-border);
  border-radius: 0;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.post-statusbar-left {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.post-statusbar-mode {
  color: var(--green);
  font-weight: bold;
}

.post-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 3px double var(--bg-light);
}

/* Back link */
.post-back {
  margin-top: 1rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--fg-dim);
  font-size: 0.75rem;
  text-transform: lowercase;
}

.back-link:hover {
  color: var(--green);
}

/* Footer - TUI status bar */
footer {
  background-color: var(--bg-light);
  border-top: var(--tui-border);
  padding: 0.5rem 0;
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer a {
  color: var(--green);
}

footer .status-indicator {
  color: var(--green);
}

/* Responsive */
@media (max-width: 848px) {
  .hero p {
    display: none;
  }
}

@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 1.25rem;
  }

  .post-title {
    font-size: 1.25rem;
  }

  .post-content .container {
    padding: 1rem;
  }

  .post-intro {
    flex-direction: column;
  }

  .post-intro .post-image-wrapper {
    flex: none;
    max-height: 200px;
  }

  footer .container {
    flex-direction: column;
    gap: 0.25rem;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--bg-hover);
}

/* Selection */
::selection {
  background-color: var(--blue);
  color: var(--bg-dark);
}